abdelbary ahmed

abdelbary ahmed

Beni-Suef University

H-index: 17

Africa-Egypt

abdelbary ahmed Information

University

Beni-Suef University

Position

LecturerDepartment of UrologyFaculty of Medicine

Citations(all)

1178

Citations(since 2020)

870

Cited By

555

hIndex(all)

17

hIndex(since 2020)

16

i10Index(all)

27

i10Index(since 2020)

25

Email

University Profile Page

Beni-Suef University

abdelbary ahmed Skills & Research Interests

Urology

Top articles of abdelbary ahmed

Ultrasound-guided percutaneous nephrolithotomy versus conventional c-arm-guided percutaneous nephrolithotomy: a prospective randomized comparative study

BackgroundUltrasound guidance for renal access in percutaneous nephrolithotomy (PCNL) is a safe, effective, and low-cost procedure. The current study compared the safety and effectiveness of ultrasound-guided PCNL (US-PCNL) for renal stone therapy versus fluoroscopy-guided PCNL (FL-PCNL) in prone position.ResultsSuccessful puncture was attained in all cases in both groups. Unlike fluoroscopy, US guidance reduced the time needed for achieving renal puncture that was (22.45 ± 6.95 s) compared to fluoroscopy that was (68.28 ± 56.76 s) (P value < 0.001). The mean duration of access that was reported in our study was (3.92 ± 0.72 min) in the US-PCNL group and (4.03 ± 0.77 min) in the FL-PCNL group (P value 0.460). There was no significant difference in the total operative time between both groups in our study as the mean operative time in the US-PCNL group was (61.47 ± 6.07 min …

Authors

Akram A Elmarakbi,Ahmed M Gaber Mohamed,Amr M Massoud,Ahmed Abdelbary,Rabie M Ibrahim

Journal

Beni-Suef University Journal of Basic and Applied Sciences

Published Date

2024/1/23

Vardenafil Versus Tamsulosin Efficacy in Relieving Ureteral Stent-Related Symptoms: A Randomized Single Center Study

Background: Urinary symptoms are common side effects following ureteral DJ insertion, different solutions are applied to overcome these symptoms like alpha-adrenergic blockers and phosphodiesterase inhibitors.Aim of the work: To compare the effect of Vardenafil 10 mg once daily versus Tamsulosin 0.4 mg once daily on stent-related symptoms (SRSs).Patients and methods: A single center prospective randomized trial was conducted from November 2020 to November 2022 on patients presented with SRSs, randomized to receive either Vardenafil or Tamsulosin for subsequent 4 to 6 weeks. The efficacy of drugs to relieve SRSs was measured by the Ureteral stent symptom questionnaire (USSQ score).Outcomes: The main outcome measure used was the Ureteral stent symptom questionnaire scores, with sexual score analysis regarding gender and age.Results: Of 208 patients, the mean age was 45.07±9.5 years, ranging from 21 to 65 years. There was an improvement regarding urinary symptoms, sexual health, body pain, general health, and work performance after the administration of Vardenafil, p= 0.001. On the other hand, Tamsulosin achieved improvement in most categories except sexual health, p= 0.5. Univariate and multivariate analysis of sexual health score in the USSQ showed statistically significant differences toward females and males over 50 years, p= 0.003 and 0.02 respectively.Clinical Implications: both drugs were safe for the patients who were involved in the study, and minimal side effects were reported.Limitations: Vardenafil has a limited half-life, and it was sometimes necessary to add Tamsulosin to enhance its efficacy …

Authors

Ahmed Abdelbary,Ahmed Ahmed Mohammed,Amr Medhat Massoud,Akram A Elmarakbi,Ahmad Abdellatif

Published Date

2024/3/5

(105) Arab Patient and Partner Satisfaction Following Malleable Penile Prosthesis Implantation in North Africa and the Middle East

Introduction Due to the sensitivity of the topic of penile implants for the treatment of refractory erectile dysfunction (ED) in the Middle East and North Africa region, a scarce body of related research is available. Objective We aimed at investigating the levels of patient and partner satisfaction after malleable penile prosthesis implantation among the Arab population and its dynamics during and after the first 6 months of surgery. Methods This was a prospective 6-month follow-up study of 120 patients undergoing malleable penile prosthesis implantation at our unit by a single surgeon. Three telephone encounters were conducted for each couple at 1 month, 3 months, and 6 months postoperative (PO). We utilized our validated Arabic version of the Modified Erectile Dysfunction Inventory of Treatment Satisfaction (AM-EDITS). During the 1st first encounter, we …

Authors

A Ragheb,D Osmonov,M Abdallah,A Abdelbary,M Emadeldin,A Elmarakby

Journal

The Journal of Sexual Medicine

Published Date

2024/3

(234) The Effect of Cigarette Smoking Cessation on Semen Quality

Introduction Extensive research efforts have always focused on the deleterious effects of smoking on male reproduction by comparing fertility in smokers versus nonsmokers. Nevertheless, studies on the effect of smoking cessation on male fertility remain scarce. Objective Our primary aim was to investigate the reversibility of the negative impact of smoking on male fertility. Secondarily, we studied the effect of both time after smoking cessation as well as the smoking index on semen quality improvement. Methods Our study included 60 participants who applied to a smoking cessation program. The volunteers started by completing a fertility background questionnaire. Two semen specimens, provided 2 weeks apart, were analyzed according to the WHO guidelines for each candidate on three different occasions. The first was right before smoking cessation …

Authors

A Ragheb,A Abdelbary,A Massoud,M Mohamed,A Elmarakby

Journal

The Journal of Sexual Medicine

Published Date

2024/3

(388) Arab Patient and Partner Satisfaction Following Malleable Penile Prosthesis Implantation in the Middle East and North Africa

Introduction Due to the sensitivity of the topic of penile implants for the treatment of refractory erectile dysfunction (ED) in the Middle East and North Africa region, a scarce body of related research is available. Objective We aimed at investigating the levels of patient and partner satisfaction after malleable penile prosthesis implantation among the Arab population and its dynamics during and after the first 6 months of surgery. Methods This was a prospective 6-month follow-up study of 120 patients undergoing malleable penile prosthesis implantation at our unit by a single surgeon. Three telephone encounters were conducted for each couple at 1 month, 3 months, and 6 months postoperative (PO). We utilized our validated Arabic version of the Modified Erectile Dysfunction Inventory of Treatment Satisfaction (AM-EDITS). During the 1st first encounter, we …

Authors

A Ragheb,M Abdallah,A Abdelbary,M Emadeldin,A Mohamed,A Elmarakby

Journal

The Journal of Sexual Medicine

Published Date

2024/2

(078) The Effect of Smoking Cessation on Semen Quality

Introduction Extensive research efforts have always focused on the deleterious effects of smoking on male reproduction by comparing fertility in smokers versus nonsmokers. Nevertheless, studies on the effect of smoking cessation on male fertility remain scarce. Objective Our primary aim was to investigate the reversibility of the negative impact of smoking on male fertility. Secondarily, we studied the effect of both time after smoking cessation as well as the smoking index on semen quality improvement. Methods Our study included 60 participants who applied to a smoking cessation program. The volunteers started by completing a fertility background questionnaire. Two semen specimens, provided 2 weeks apart, were analyzed according to the WHO guidelines for each candidate on three different occasions. The first was right before smoking cessation …

Authors

A Ragheb,A Abdelbary,A Massoud,M Mohamed,A Elmarakby

Journal

The Journal of Sexual Medicine

Published Date

2024/2

Experimental and numerical study of the effects of fiber orientation on stress concentration of CFRE

Pool fires are frequently reported to trigger domino effects in oil storage farms and chemical factories. Fire plume is the vehicle of damage caused by pool fires. This study aims to study the effects of ullage height (distance between the fuel surface and the upper pool rim) on fire plume flow and combustion characteristics were conducted by experimental and numerical studies. Ullage heights were systematically changed from zero to the value at which the flame is self-extinguished. Simulations were validated against both time-averaged and instantaneous experimental measurements. In terms of the dynamic of the flame base with respect to the pool outlet, three classes were identified as follows. Class I: Flame base anchored near the upper pool rim, and the combustion was mainly of classic non-premixed flame type; Class II: Flame base entered into the pool but not merged; Class III: Flame base entered into the …

Authors

Chunxiang Liu,Mehdi Jangi,Jie Ji,Longxing Yu,Long Ding

Journal

Process Safety and Environmental Protection

Published Date

2021/7/1

Heterosis and estimation of general and specific combining ability as base for selected superior recombination of the some crossed cotton genotypes

The objective of this study was to determine the general and specific combining abilities and heterosis of some cotton genotypes for yield, its components and fiber traits using line x tester mating design. Nine parents (six line and three testers) were crossed in a line x tester mating design in 2020 season. Nine parents along with their eighteen F1 crosses were studied in a randomized complete block design (RCBD) with three replications during 2021 at Sakha. Agricultural. Research. Station. Kafr El-Sheikh, Governorate, Egypt. Based on line x tester analysis, the variance due to

Authors

WMB Yehia,AM Abdelbary,AA Mohamed,HMK Kotb,MM Sherif

Journal

Asian Journal of Biochemistry, Genetics and Molecular Biology

Published Date

2023

The effect of immediate neoadjuvant electromotive instillation of mitomycin C with Bacillus Calmette–Guérin versus BCG alone in non-muscle-invasive bladder cancer: A randomized …

PurposeThe clinical effect of neoadjuvant intravesical instillation of chemotherapy immediately before transurethral resection of bladder tumors (TURBT) has been a subject of recent research. The aim of this study was to assess the effect of immediate neoadjuvant electromotive instillation of mitomycin C before transurethral resection for patients with non-muscle-invasive urothelial bladder cancer.Materials and MethodsOur study was a randomized clinical trial carried out on 50 patients diagnosed with non-muscle-invasive urothelial bladder cancer. Patients were classified into two groups: Group I consisted of 25 patients who received neoadjuvant electromotive drug administration of mitomycin C before TURBT and intravesical bacille Calmette–Guerin (BCG) per week for 6 weeks; Group II consisted of 25 patients who were treated with TURBT followed by intravesical BCG per week for 6 weeks alone (standard of …

Authors

Abdalla El Azab,Ahmed Abdelbary,M Okasha Aly El Faqeh,Hatem Aboulkassem,Ashraf Saad Zaghloul,Riham Mohamed Karkeet,Ibrahim Abdelrahman

Journal

Investigative and Clinical Urology

Published Date

2023/11

The role of testicular sperm extraction in repeated intracytoplasmic sperm injection failures using ejaculate sperm

Objective To assess the role of testicular sperm in improving the success rates among patients who have repeated failed intracytoplasmic sperm injection cycles using ejaculated sperm. Design A retrospective review of records. Materials and   Methods The study included 110 partners with repeated failed ICSI using ejaculate sperm were allocated into two groups retrospectively, one of them underwent testicular ICSI and the other underwent ejaculate ICSI. The two groups were well matched regarding their age of wife, age of husband, duration of marriage, history of previous marriage and previous children. Results Showed that there was no statistically significant difference between patients with second ejaculate ICSI and patients with second testicular ICSI regarding the number of embryos and pregnancy rate (P- value>0.05). Patients underwent second testicular ICSI had a fertilization  rate insignificantly higher than patients underwent second ejaculate ICSI. Conclusions ICSI using testicular extracted sperm may be considered an alternative to using second ejaculated sperm in the treatment plan of infertile couples especially if increased SDF. We infer that increased SDF may be the main cause of repeated failures of ICSI using ejaculated sperm which remains to be proved by various studies. Higher pregnancy and live birth rates are associated more with higher testicular biopsy motility per drop, testicular biopsy concentration, Number of embryos and the fertilization rate. This study recommends that men with repeated failed ejaculate ICSI with high DNA fragmentation can gain benefit from testicular ICSI in the form of increased fertilization rate …

Authors

Ahmed Abdelbary,Akrm Ahmed Elmarakbi,Mohamed Emadeldin,Ahmed Raghib

Journal

Egyptian Journal of Medical Research

Published Date

2023/7/1

Principles of engineering tribology: fundamentals and applications

Principles of Engineering Tribology: Fundamentals and Applications introduces readers to the core theories and fundamentals of the field, its basic terminology and concepts, as well as advanced topics such as the tribological properties of various engineering surfaces, roughness measurements, and the mechanics of surface contact. The fundamentals of friction and wear of metallic and non-metallic materials such as polymers, ceramics, rubbers, and composites are discussed, as are fluidic, gaseous, grease, and solid media lubrication techniques. In addition, the properties of lubricants and various types of additives incorporated are discussed, along with a methodology for conducting friction, wear and lubrication laboratory testing and an overview of simulation and modeling methods for various tribosystems. Case studies and applications are featured throughout, with a particular emphasis on analyzing failure modes of tribosystems. Introduces the basic concepts of tribology, building a comprehensive understanding for readers and then covering more advanced topics Discusses tribological properties of various engineering surfaces, roughness measurements, and mechanics of surface contact Covers more advanced topics such as fluidic, gaseous, grease, and solid media lubricants, methods for conducing friction and wear laboratory tests, and more Includes a wide-range of both traditional and state-of-the-art applications and case studies

Authors

Ahmed Abdelbary,Li Chang

Published Date

2023/5/26

(472) The AM-EDITS: A New Tool for Evaluating the Arab Patient and Partner Satisfaction Following Penile Prosthesis Implantation

Introduction The Modified Erectile Dysfunction Inventory of Treatment Satisfaction (M-EDITS) is recognized as a useful tool in English language to assess post penile prosthetic implantation (PPI) satisfaction. Nevertheless, a more global questionnaire remains to be introduced for the Arab population, where malleable PPI (MPPI) remains more popular, compared to the inflatable types. Due to the sensitivity of the topic and the conservative nature of the Middle East and North Africa (MENA) region, a scarce body of related research is available. Objective Our primary goal was to develop a validated Arabic version of the M-EDITS adapted to the Arabic culture and introduce it as the AM-EDITS. Our secondary goal was to utilize it to investigate the levels of Arab patient and partner satisfaction after MPPI and its sustainability during and after the first 6 months of surgery …

Authors

A Ragheb,D Osmonov,M Abdallah,A Elmarakbi,A Massoud,M Emadeldin,A Abdelbary

Journal

The Journal of Sexual Medicine

Published Date

2023/5

Theoretical and experimental study on the influence of fiber orientation on the tensile properties of unidirectional carbon fiber/epoxy composite

Water is the most essential substance for the existence of human being. The conversion of salty or contaminated

Authors

Vivek Patel,Vatsal Patel,Nidhi Trapasia Rajesh Patel,Jatin Patel

Journal

ICTEA: International Conference on Thermal Engineering

Published Date

2019/5/7

Liver targeting of ledipasvir via galactosylated chitosan–coated spanlastics: chemical synthesis, statistical optimization, in vitro, and pharmacokinetic evaluation

IntroductionLedipasvir is an effective direct acting antiviral agent used in the treatment of hepatitis C virus. The high price of ledipasvir was a reason for its limited provision to wide population of HCV patients.ObjectivesOur objective is the formulation of liver targeted drug delivery system that can increase the amount of ledipasvir delivered to liver and prolong its liver residence in an attempt to reduce its recommended dose and its costing in the treatment of HCV.MethodsDifferent ledipasvir-loaded spanlastic formulations were prepared using the ethanol injection method and evaluated with respect to the particle size, zeta potential, polydispersity index, and entrapment efficiency %. Using Design-Expert ® software, the optimum spanlastics formulation was selected; then, it was coated by synthesized galactosylated chitosan. A pharmacokinetic study was carried out to evaluate the ability of the prepared galactosylated …

Authors

Ahmed M Fatouh,Ahmed H Elshafeey,Ahmed Abdelbary

Journal

Drug Delivery and Translational Research

Published Date

2022/5

The prognosis of lipid reprogramming with the HMG-CoA reductase inhibitor, rosuvastatin, in castrated Egyptian prostate cancer patients: Randomized trial

Aim The role of surgical castration and rosuvastatin treatment on lipid profile and lipid metabolism related markers was evaluated for their prognostic significance in metastatic prostate cancer (mPC) patients. Methods A total of 84 newly diagnosed castrated mPC patients treated with castration were recruited and divided into two groups: Group I served as control (statin non-users) while group II treated with Rosuvastatin (20 mg/day) for 6 months and served as statin users. Prostate specific antigen (PSA), epidermal growth factor receptor (EGFR), Caveolin-1 (CAV1), lipid profile (LDL, HDL, triglycerides (TG) and total cholesterol (TC)) and lipid metabolism related markers (aldoketoreductase (AKR1C4), HMG-CoA reductase (HMGCR), ATP-binding cassette transporter A1 (ABCA1), and soluble low density lipoprotein receptor related protein 1 (SLDLRP1)) were measured at baseline, after 3 and 6 months. Overall survival (OS) was analyzed by Kaplan-Meier and COX regression for prognostic significance. Results Before castration, HMG-CoA reductase was elevated in patients <65 years (P = 0.009). Bone metastasis was associated with high PSA level (P = 0.013), but low HMGCR (P = 0.004). Patients with positive family history for prostate cancer showed high levels of EGFR, TG, TC, LDL, alkaline phosphatase (ALP), but low AKR1C4, SLDLRP1, CAV1 and ABCA-1 levels. Smokers had high CAV1 level (P = 0.017). After 6 months of castration and rosuvastatin administration, PSA, TG, LDL and TC were significantly reduced, while AKR1C4, HMGCR, SLDLRP1, CAV1 and ABCA-1 were significantly increased. Overall survival was reduced in …

Authors

Riham M Karkeet,Abdelrahman N Zekri,Mohamed M Sayed-Ahmed,Ghada M Sherif,Salem E Salem,Ahmed Abdelbary,Mariam A Fouad,Sherif Y Saad

Journal

Plos one

Published Date

2022/12/8

Wear mechanisms and methods of wear testing

Wear is defined as the progressive removal of the material from a solid surface and manifested by a change in the geometry of the surface. Accordingly, it is extensively supposed that wear is one of the major causes of failure in many engineering applications. Most of the wear mechanisms are built around concepts such as brittle fracture, plastic deformation, fatigue, and cohesive and adhesive failures in bonded structures. Since there are several mechanisms of wear, we should expect no unique or typical form or size of wear debris. The complexity of wear is related to the fact that, in many cases, the involved mechanism may act in such a way as to affect the others. Besides, wear behavior is associated with operating conditions. The significance of these conditions (or factors) tends to change with the type of the wear mechanism. The approach of wear …

Authors

Ahmed Abdelbary

Journal

Tribology and Characterization of Surface Coatings

Published Date

2022/1/16

Modulation of autophagy, apoptosis and oxidative stress: A clue for repurposing metformin in photoaging

Long-term sun exposure is the commonest cause of photoaging, where mutual interplay between autophagy, oxidative stress, and apoptosis is incriminated. In combating photoaging, pharmacological approaches targeted to modulate autophagy are currently gaining more ground. This study aimed to examine repurposing metformin use in such context with or without the antioxidant coenzyme Q10 (coQ10) in ultraviolet A (UVA) irradiation-induced skin damage. The study was conducted on 70 female CD1 mice that were randomly assigned into seven groups (10/group): normal control, vehicle-treated-UVA-exposed mice, three metformin UVA-exposed groups (Topical 1 and 10%, and oral 300 mg/kg), topical coQ10 (1%)-treated mice, and combined oral metformin with topical coQ10-treated UVA-exposed mice. After UVA-exposure for 10 weeks (3 times/week), macroscopic signs of photoaging were evaluated. Mice …

Authors

Dalia Kamal Mostafa,Omnia A Nayel,Shaymaa Abdulmalek,Ahmed A Abdelbary,Cherine A Ismail

Journal

Inflammopharmacology

Published Date

2022/12

The use of three chip high definition camera with modular enhancement system with white light cystoscopy during transurethral resection of bladder tumours. Does it improve …

The goal of our study is to assess if the use of Storz professional image enhancement system (SPIES) improve carcinoma in situ (CIS) detection. We conducted a prospective study on 35 patients of both sexes who have fulfilled the inclusion criteria from December 2019 to May 2020. Preoperatively, we collected urine samples from all patients amenable for cystoscopy for urine analysis and urine cytology. Contrast enhanced abdomen and pelvic computerized tomography (CT) was done for all patients. Under spinal anaesthesia white light cystoscopy (WLC) was done first, then SPIES camera was used by the same operator to detect any other suspicious lesions. TURBT was done for all lesions and specimens were sent for histopathology assessment. Our results showed that there was statistically significant difference between the SPIES and WLC regarding the number of lesions detected, as the total number of lesions detected by the SPIES was 37 lesions, three of these lesions were CIS,  but the WLC detected only 27 lesions, no CIS was detected by WLC (p value 0.001). Pathological recurrence was confirmed in 6/35 (17.1%) patients at 3 months follow up.

Authors

Ahmed Mahmoud Abdelbary,Ossama Mahmoud Mohamad,Ahmed Abd El Latif,Almotasem Bellah Adel,Akram A Elmarakbi

Journal

Egyptian Journal of Medical Research

Published Date

2022/10/1

Variables affecting quality of life after Radical cystectomy and neobladder substitution: Egyptian National Cancer Institute experience

IntroductionTo evaluate the functional outcomes and quality of life beyond 1 year, in patients treated with radical cystectomy and orthotopic diversion for invasive bladder cancer. To investigate various potential contributing factors on patient's quality of life after radical cystectomy and urinary diversion via orthotopic neobladder.Materials and methodsThis retrospective study was conducted at the National Cancer Institute (NCI), Cairo; including a total of 97 patients who underwent radical cystectomy and orthotopic diversion. Functional and sexual outcome and patient QoL were assessed by ICIQ-SF, IIEF-5 and QLQ-C30 questionnaires. Potential association of patient QoL with pre-and intraoperative variables was studied.ResultsOur results show that preoperative ECOG performance status 0 (P = 0.0001), and nerve sparing surgery (P = 0.001), were associated with high QoL and functional outcomes. On the contrary …

Authors

A El Azab,E Hossam,I Abdelrahman,H Aboulkassem,WM Fadlalla,A Abdelbary

Journal

Progrès en Urologie

Published Date

2022/5/1

Tribological aspects of artificial joints

Tribology application in biomedical applications is a growing field of research. Biomaterials including metals, carbon ceramics and polymers are broadly applied in various biomedical applications. These applications comprise human prosthesis implantation such as the elbow, shoulder, wrist, ankle, finger and toe. Over the last 50 years, total joint replacements are considered one of the most positive applications of biomaterials. In order to recognize the friction, wear and lubrication of biomedical tribological systems, the fundamentals of tribology can be used. For example, it is widely believed that wear is the foremost cause of long-term failure in artificial joints. Both in vivo and in vitro studies demonstrated that the femoral head scratches and polymer ageing can accelerate the wear. Also, surface and subsurface cracks in polymeric acetabular cup along with the effect of counterface imperfections have dominant role …

Authors

Ahmed Abdelbary

Published Date

2021/8/26

Development of tizanidine loaded aspasomes as transdermal delivery system: ex-vivo and in-vivo evaluation

New generation of amphiphilic vesicles known as aspasomes were investigated as potential carriers for transdermal delivery of tizanidine (TZN). Using full factorial design, an optimal formulation was developed by evaluating the effects of selected variables on the properties of the vesicles with regards to entrapment efficiency, vesicle size and cumulative percentage released. The optimal formula (TZN-AS 6) consisting of 20 mg TZN, 50 mg ascorbyl palmitate (AP), 50 mg cholesterol (CH) and 50 mg Span 60, represented well dispersed spherical vesicles in the nanorange sizes and exhibited excellent stability under different storage conditions. Ex-vivo permeation studies using excised rat skin showed a 4.4-fold increase of the steady state flux in comparison to the unformulated drug (p < 0.05). The pharmacokinetic parameters obtained from the in-vivo study using Wistar rats, showed that the bioavailability of …

Authors

Rawia M Khalil,Ahmed Abdelbary,Silvia Kocova El Arini,Mona Basha,Hadeer A El-Hashemy,Faten Farouk

Journal

Journal of liposome research

Published Date

2021/1/2

Value of early second session shock wave lithotripsy in treatment of upper ureteric stones compared to laser ureteroscopy

Purpose The safety and efficacy of early second session shock wave lithotripsy (SWL) compared with laser ureteroscopy (URS) for the treatment of upper ureteric stones were evaluated. Methods From January to October 2019, 108 patients with upper ureteric stones (< 1.5 cm and ≤ 1000 Hounsfield unit (HU)) were randomized into SWL and laser URS groups. The second SWL session was performed within 48–72 h of the first session. Using plain abdominal X-ray and ultrasonography, patients were evaluated 48–72 h after the first SWL session and one week after the second and third SWL sessions or one week after URS. The procedure was considered a success when no additional procedures were needed to clear the stone. To determine the stone-free rate (SFR), noncontrast computed tomography of the urinary tract was performed three months …

Authors

Ahmed M Abdelbary,Ahmad A Al-Dessoukey,Ayman S Moussa,Akram A Elmarakbi,Ahmed M Ragheb,Osama Sayed,Ahmed M Elbatanouny,Ahmed Abd El Latif,Amr M Lofty,Ahmed G Mohamed,Shehab Salah,Rabie M Ibrahim

Journal

World Journal of Urology

Published Date

2021/8/1

Friction and Wear of Polymer and Polymer Composites

Friction and wear of polymers and their composites introduce further difficulty that polymers are simply affected by working conditions and sliding media. The disagreement between friction in polymers and metallic friction is resulting from the alterations in the elastic and plastic behavior of metallic materials and the viscoelastic performance of polymeric materials. It is expected that, compared to metals, polymers are easily to meet elastic distortion when in contact. The wear mechanisms are described through extensive categories: abrasive, adhesive, surface fatigue, and others. The influences controlling friction and wear of polymers are broadly argued. There are various mechanisms governing the tribological behavior of the polymer moving on metal tribosystems including transfer film, wear regimes, and pv-limit. The basics of polymeric composites and how numerous compositions and structures can affect …

Authors

Ahmed Abdelbary

Journal

Tribology of Polymer and Polymer Composites for Industry 4.0

Published Date

2021

Randomized controlled trial of laparoscopic versus open radical cystectomy in a laparoscopic naive center

Background. Laparoscopic radical cystectomy is a challenging surgical procedure; however, it has been largely abandoned in favor of the more intuitive robotic-assisted cystectomy. Due to the prohibitive cost of robotic surgery, the adoption of laparoscopic cystectomy is of relevance in low-resource institutes. Methodology. This is a randomized controlled trial comparing laparoscopic radical cystectomy (LRC) to open radical cystectomy (ORC) at a single institute. Each group included thirty patients. The trial was designed to compare both approaches regarding operative time, blood loss, transfusion requirements, length of hospital stay, time to oral intake, requirement of opioid analgesia, and complications. Results. LRC was associated with less hospital stay (9.8 vs. 13.8 days, ), less time to oral solid intake (6 vs. 8.6 days, ), and lower opioid requirements (23.3% vs. 53.3%, ). There was a trend towards lower blood loss and transfusion requirements, but this did not reach statistical significance. Overall complication rates were comparable. Conclusion. Laparoscopic radical cystectomy was associated with comparable postoperative outcomes when compared to ORC in the first laparoscopic cystectomy experience in our center. Benefitting from the assistance of an experienced laparoscopic surgeon is recommended to shorten the learning curve.

Authors

Waleed Mohamed Fadlalla,Ayman Hanafy,Mahmoud Abdelhakim,Hatem Aboulkassem,El Sayed Ashraf,Ahmed Abdelbary

Journal

Advances in Urology

Published Date

2021/7/7

Ultraslow full‐power shock wave lithotripsy protocol in the management of high attenuation value upper ureteric stones: A randomized comparative study

Objectives To evaluate the efficacy and safety of ultraslow full‐power shock wave lithotripsy protocol in the management of high attenuation value upper ureteric stones compared with slow‐rate, power‐ramping shock wave lithotripsy. Methods This was a randomized trial enrolling patients with a single high attenuation value (≥1000 HU) upper ureteric stones between January 2019 and July 2019. Ultraslow full‐power shock wave lithotripsy (54 patients) was applied at a rate of 30 shock waves/min with power ramping from 6 to 18 kV for 100 shock waves, then a safety pause for 2 min, followed by ramping 18–22 kV for 100 shock waves, then a safety pause for 2 min. Then, full power (22 kV) was maintained until the end of the session. Slow‐rate, power‐ramping shock wave lithotripsy (47 patients) was applied at a rate of 60 shock waves/min with power ramping from 6 to 10 kV during the first 500 shock waves, then …

Authors

Ahmad A Al‐Dessoukey,Mohammed S ElSheemy,Mahmoud Abdallah,Ayman S Moussa,Osama Sayed,Rabie Abdallah,Amr M Massoud,Mohamed H Abdelhamid,Ahmed M Ragheb,Waleed Ghoneima,Ahmed M Abdelbary,Akram A Elmarakbi

Journal

International Journal of Urology

Published Date

2021/1

Robotic Radical Prostatectomy at the Egyptian National Cancer Institute: Overcoming the Challenges in the Initial Case Series

BACKGROUND: Robotic prostatectomy is showing progressive worldwide spread owing to potential clinical benefits, but at a higher cost.AIM: This article describes the challenges and clinical outcomes of the first group of patients undergoing robotic prostatectomy in Egypt.DESIGN, SETTING, PARTICIPANTS: From 2017 to 2019, the data of all (55) patients undergoing robotic radical prostatectomy at the National Cancer Institute of Egypt were retrospectively analyzed.OUTCOME EVALUATION: Short-term operative outcomes, complications, technical difficulties, pathologic data, and biochemical recurrence were reported.RESULTS: Average blood loss was 296 ml; one patient required blood transfusion. One case required open conversion, another required re-docking of the robot. Setup time was significantly improved from an average of 27.7 min in the first 27 cases to an average of 17.3 min in the final 28 cases (p< 0.0001). Complications developed in 27% of our patients. Continence recovery at catheter removal, 1st, 3rd, 6th, and 12th months were 32.7%, 50.9%, 65.5%, 74.5%, and 96%, respectively.CONCLUSIONS: Results from the first series of robotic radical prostatectomy were encouraging. Technical challenges can be overcome in a short period using a dedicated team supplemented by institutional support. Acceptable complication rate and satisfactory outcomes regarding continence and blood loss were observed.

Authors

Ashraf Zaghloul,Ahmed Abdelbary,Amr Fergany,Hatem Aboulkassem,Waleed Mohamed Fadlalla

Journal

Open Access Macedonian Journal of Medical Sciences

Published Date

2021/6/4

Giza 97" a new Egyptian long staple cotton variety

A new Egyptian cotton variety Giza 97 (Gossypium barbadense L.) accompanied by superior yield, fiber quality and resistance to Fusarium wilt (Fusarium oxysporum f. sp. vasinfectum) is developed by cotton breeding Section, Cotton Research Institute, Agricultural Research Center, Giza, Egypt. The new variety achieves targets for farmers (high yield, early maturity, resistance to pests and diseases), trader (high lint percentage), and spinner (good fiber quality). Also, had higher water use efficiency by saving 20% of irrigated water. Giza 97 originated from a cross between germplasm line [(Giza 89 x R101) x Giza 86] and Giza 94. Starting from F2 generation, the selection of a single plant was done using pedigree selection method. The superior combinations were finally selected at F5 generation based on yield potential, fiber quality over the commercial varieties. Multilocations yield trials showed that these advanced lines had higher yield productivity plus maximum stability over five locations during two growing seasons and widely adapted in Delta region. During eight growing seasons Giza 97 was increasing significantly over the two commercial varieties (Giza 94 and Giza 86) over all locations The new variety characterized by 12.35 K/F, 13.93 K/F and 39.82% for seed cotton yield, lint yield and lint% traits. While, the fiber quality traits were characterized as a long staple cotton variety such as fiber length (33.8 mm), uniformity index (85.6%), micronaire value (4.4), fiber strength was (44.6 g/tex), yellowness or+ b (8.9) and yarn strength (2400) as the average mean during three growing seasons.

Authors

AM Abdelbary,HM Hamoud,WM Yehiya,AM Abdelmoghny,M Rabi Eman,E Ali Samia,MH Orabi,S Max Mariz,MS Srour,E Darwish Sawsan,A Zania,MA Raffat,YT Atta,SS Attia

Journal

Egypt J Agric Res

Published Date

2021/11/11

Tribological behavior of fiber-reinforced polymer composites

The goal of this chapter is to argue the tribological properties of fiber-reinforced polymer composites. Primarily, diverse types of polymeric resins and fibers are introduced to provide an outline of the basics of polymeric composite materials. Afterward, the effect of the length of the fiber on the tribological behavior of composites is mentioned. Moreover, the impacts of fiber orientation and content are deliberated. The tribological performance of fibrous composites considering different surface treatments of fibers is argued. Finally, the chapter addresses the impact of water and oil lubrication conditions on the tribology of polymer composites.

Authors

Ahmed Abdelbary,Yasser S Mohamed

Published Date

2021/1/1

Bioanalytical Comparison of Transdermal Delivery of Tizanidine from Different Nanovesicular Carriers

Purpose Tizanidine (TZN) is used for the management of muscle spasms. Oral TZN is liable to first-pass metabolism and interindividual variation. Transdermal drug delivery systems (TDDS) are gaining research attention as an alternative route. The aim of this study is the bioanalytical comparison of the oral route and two TDDS, bilosomes and aspasomes. Methods TZN-loaded bilosomes and aspasomes were applied to mice. The plasma concentration of TZN was determined in mice plasma post application by in-house developed HPLC method. Results were compared to those obtained post an equal oral dose. Pharmacokinetic parameters were deduced and statistically compared. Results The TDDS route significantly enhanced the bioavailability and plasma concentration of TZN (p < 0.0009; CL = 95). The drug …

Authors

Faten Farouk,Rawia M Khalil,Ahmed Abdelbary,Silvia Kocova El Arini,Mona Basha,Hadeer A El-Hashemy

Journal

Journal of Pharmaceutical Innovation

Published Date

2021/6

19 Tribological Aspects

The start of introducing the word ‘tribology’was in 1964. Presently, dictionaries define tribology as ‘the study of friction, wear and lubrication, and the design of bearings’ or ‘the science of interacting surfaces in relative motion’(Dictionary; Jost, 1966; Oxford). Since the publication of the P. Jost report, the ability and understanding of modeling many tribology subjects has increased enormously. Tribology was not limited to machinery, new areas of tribology have emerged such as space tribology, biotribology, green tribology, micro/nano-tribology and others. The term Biotribology is often used to mention the application of tribological principles between moving components in, artificial or natural, medical and biological systems. Replacement of joint is one of the most crucial arthroplasties for many diseases of human joints. This treatment comprises the replacement of natural articulating joints, such as the hip, knee, shoulder and ankle with artificial joints. Presently, it is supposed that there are over 1,000,000 artificial joints implanted annually into patients

Authors

Ahmed Abdelbary

Journal

Tribology and Sustainability

Published Date

2021/8/26

Galactosylated chitosan coated liposomes of ledipasvir for liver targeting: chemical synthesis, statistical optimization, in-vitro and in-vivo evaluation

Ledipasvir is a novel antiviral agent used in the treatment of hepatitis C. We aim in our study to increase its delivery to hepatocytes and prolong its retention within liver. Several formulae of ledipasvir loaded liposomes were prepared and the best formula regarding particle size, zeta potential, polydispersity index and entrapment efficiency was selected. On the other hand, galactosylated chitosan was synthesized in a chemical reaction. Then the best liposomes formula was coated with the galactosylated chitosan. Having galactose residues on their surface, the coated liposomes can bind to the asialoglycoprotein receptors on the targeted hepatocytes enhancing ledipasvir uptake into them. The galactosylated chitosan coated liposomes had particle size of 218.2 nm ± 7.21, zeta potential of 27.15 mV ± 1.76, polydispersity index of 0.278 ± 0.055 and entrapment efficiency % of 54.63% ± 0.05 respectively. The …

Authors

Ahmed M Fatouh,Ahmed H Elshafeey,Ahmed Abdelbary

Journal

Journal of Pharmaceutical Sciences

Published Date

2021/3/1

Thermally stimulated depolarization current characteristic of EVA–conductive PPy composites

Thermally stimulated depolarization current in pure poly(ethylene-co-vinyl acetate) and poly(ethylene-co-vinyl acetate) composites with different amounts of polypyrrole/carbon nanoparticles (of various weight ratios, 100:0, 95:5, 90:10, 85:15, 80:20, and 70:30) have been investigated at poling temperature 363 K using different polarizing voltage. Thermograms of pure and composite samples have two or three peaks over all temperature ranges depending on the polarizing voltage. The decrease in peak height with increased polarized voltage is observed in pure poly(ethylene-co-vinyl acetate) samples loaded with 5%, 10%, 15%, and 30% polypyrrole due to the detrapping of the large amounts of charge results in electrode blocking and decrease in thermally stimulated depolarization current in those samples. The molecular parameters, such as activation energy E, charge released Q, and relaxation times τ0 and τ …

Authors

FS Thabet,AM AbdElbary,GM Nasr

Journal

Journal of Composite Materials

Published Date

2020/1

Accuracy of diffusion-weighted magnetic resonance imaging in evaluation of muscle invasion and histologic grading of the urinary bladder carcinoma

Background Carcinoma of the urinary bladder is a common malignant tumor of the urinary tract in both men and women. Proper management of the urinary bladder cancer depends on the stage of the lesions. The aim of this prospective study was to determine the accuracy of diffusion-weighted images in early detection of muscle invasion, local tumor staging of urinary bladder carcinoma, and to measure the correlation between apparent diffusion coefficient (ADC) and histologic grade. Sixty patients with urinary bladder mass lesions underwent transurethral cystoscopy and biopsy after MR imaging. Radical cystectomy was done for lesions infiltrating muscularis propria. Different MR image sets (T2WIs, DWIs images) were interpreted; ADC values of tumors were calculated. Results Kappa agreement was better in DWI than T2WI (Kappa was 0.756 and 0 …

Authors

Sahar Mahmoud Abd elsalam,Ahmed Mahmoud Abdelbary

Journal

Egyptian Journal of Radiology and Nuclear Medicine

Published Date

2020/12

Percutaneous nephrostomy versus JJ ureteric stent as the initial drainage method in kidney stone patients presenting with acute kidney injury: a prospective randomized study

Objective To compare percutaneous nephrostomy tube versus JJ stent as an initial urinary drainage procedure in kidney stone patients presenting with acute kidney injury. Methods Between January 2017 and January 2019, 143 patients with acute kidney injury secondary to obstructive kidney stone were prospectively randomized into the percutaneous nephrostomy tube group (71 patients) and JJ stent group (72 patients) at Beni‐Suef University Hospital, Beni‐Suef, Egypt. Exclusion criteria included candidates for acute dialysis, fever (>38°C), pyonephrosis, pregnancy and uncontrolled coagulopathy. The period required for serum creatinine normalization, failure of insertion, operative and fluoroscopy time were recorded. Definitive stone management for proximal ureteral stones >1.5 cm consisted of percutaneous nephrolithotomy for the percutaneous nephrostomy group and ureteroscopic laser lithotripsy for the …

Authors

Ahmed M Elbatanouny,Ahmed M Ragheb,Ahmed M Abdelbary,Hany Fathy,Amr M Massoud,Ahmed Abd El Latif,Ayman S Moussa,Rabie M Ibrahim

Journal

International Journal of Urology

Published Date

2020/10

Coated lipidic nanoparticles as a new strategy for enhancing nose-to-brain delivery of a hydrophilic drug molecule

Oral Almotriptan maleate (ALM) is used in the treatment of migraine; however, due to its extreme aqueous solubility, shows poor penetration and lesser concentration in the brain thus requiring frequent oral dosing. Being flexible and lipophilic in nature, nanostructured lipid carriers (NLCs) represent a promising tool in delivering therapeutic substances to the brain. This investigation is meant to explore the capability of mucoadhesive chitosan-coated NLCs to efficiently deliver ALM to the brain through the nasal route as a non-invasive alternative route for targeting the central nervous system (CNS). D-optimal design was adopted and thirteen different formulae were prepared using hot homogenization and ultrasonication technique; where an accurate amount of the almotriptan was added to the molten lipid mixture followed by the addition of the heated aqueous phase under stirring, then the mixture was subjected to …

Authors

Lamis H Salem,Gina S El-Feky,Rania H Fahmy,Omaima N El Gazayerly,Ahmed Abdelbary

Journal

Journal of Pharmaceutical Sciences

Published Date

2020/7/1

Ultraslow full‐power shock wave lithotripsy versus slow power‐ramping shock wave lithotripsy in stones with high attenuation value: A randomized comparative study

Objectives To compare the efficacy and safety of ultraslow full‐power versus slow rate, power‐ramping shock wave lithotripsy in the management of stones with a high attenuation value. Methods This was a randomized comparative study enrolling patients with single high attenuation value (≥1000 Hounsfield unit) stones (≤3 cm) between September 2015 and May 2018. Patients with skin‐to‐stone distance >11 cm or body mass index >30 kg/m2 were excluded. Electrohydraulic shock wave lithotripsy was carried out at rate of 30 shock waves/min for group A versus 60 shock waves/min for group B. In group A, power ramping was from 6 to 18 kV for 100 shock waves, then a safety pause for 2 min, followed by ramping 18–22 kV for 100 shock waves, then a safety pause for 2 min. This full power (22 kV) was maintained until the end of the session. In group B, power ramping was carried out with an increase of 4 kV …

Authors

Ahmad A Al‐Dessoukey,Mahmoud Abdallah,Ayman S Moussa,Osama Sayed,Ahmed M Abdelbary,Rabie Abdallah,Amr M Massoud,Mohamed H Abdelhamid,Akram A Elmarakbi,Ahmed M Ragheb,Mohammed S ElSheemy,Waleed Ghoneima

Journal

International Journal of Urology

Published Date

2020/2

Overactive bladder symptoms recurrence after sudden versus gradual weaning of Solifenacin

Background To evaluate and compare the recurrence rate of overactive bladder (OAB) symptoms after solifenacin treatment in patients who stop the drug suddenly versus those who gradually wean the drug after improvement of their condition. Methods Our study included 60 patients with idiopathic OAB and treated with solifenacin 5 mg twice daily for one month. After improvement of their condition, we divided the responders into two groups, group I stopped the drug suddenly, while group II underwent gradual weaning of the drug. Results The recurrence rate of symptoms of OAB was 33.3% and 60% after 1 and 3 months in patients who stopped the solifenacin suddenly after improvement of their symptoms, while it was 6.7% and 23.3% after 1 and 3 months in patients who gradually weaned solifenacin …

Authors

Ahmed Abdelbary,Ahmad Aref Al-Dessoukey,Ayman Salah Moussa,Mohamed Saif El-nasr,Akrm Ahmed Elmarakbi,Ahmed Medhat Ragheb,Ahmed Mohamed Elbatanouny,Ahmed Abdellateef,Osama Sayed,Amr Lotfy,Khaled Mohyelden,Amr Mohamad Abdelhamid,Ehab Mohamad Galal,Amr Massoud,Rabie M Ibrahim

Journal

African Journal of Urology

Published Date

2020/12

Extreme tribology: fundamentals and challenges

Tribology is an unfamiliar term for many, but is experienced by all. It is the science of friction, wear and lubrication of contacting surfaces in relative motion. The aim of this book is to introduce the fundamentals of tribology as well as its challenges in extreme operating conditions. The book comprises a historical background and an introduction to familiarize both undergraduate and postgraduate readers with such an important topic. It addresses a comprehensive coverage of classical tribology of solid contacts, friction mechanics, wear mechanisms and lubrication technologies. The tribology of polymer composites, MEMS and NEMS are explored. In addition, tribology of automotive components is presented, as are tribological applications in many practical situations.Various test methods used in evaluating wear are reviewed. Diverse techniques applied in predicting wear behavior by mathematical models, FE …

Authors

Ahmed Abdelbary

Published Date

2020/1/6

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abdelbary ahmed FAQs

What is abdelbary ahmed's h-index at Beni-Suef University?

The h-index of abdelbary ahmed has been 16 since 2020 and 17 in total.

What are abdelbary ahmed's top articles?

The articles with the titles of

Ultrasound-guided percutaneous nephrolithotomy versus conventional c-arm-guided percutaneous nephrolithotomy: a prospective randomized comparative study

Vardenafil Versus Tamsulosin Efficacy in Relieving Ureteral Stent-Related Symptoms: A Randomized Single Center Study

(105) Arab Patient and Partner Satisfaction Following Malleable Penile Prosthesis Implantation in North Africa and the Middle East

(234) The Effect of Cigarette Smoking Cessation on Semen Quality

(388) Arab Patient and Partner Satisfaction Following Malleable Penile Prosthesis Implantation in the Middle East and North Africa

(078) The Effect of Smoking Cessation on Semen Quality

Experimental and numerical study of the effects of fiber orientation on stress concentration of CFRE

Heterosis and estimation of general and specific combining ability as base for selected superior recombination of the some crossed cotton genotypes

...

are the top articles of abdelbary ahmed at Beni-Suef University.

What are abdelbary ahmed's research interests?

The research interests of abdelbary ahmed are: Urology

What is abdelbary ahmed's total number of citations?

abdelbary ahmed has 1,178 citations in total.

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