Search results for: Amr Ahmed

Items from 1 to 20 out of 62 results

article

Evaluation of the trueness and precision of conventional impressions versus digital scans for the all‐on‐four treatment in the maxillary arch: An in vitro study

Nour Jamal Marshaha, Amr Ahmed Azhari, Mansour K Assery, Walaa Magdy Ahmed

Journal of Prosthodontics > 33 > 2 > 171 - 179

Purpose To compare the accuracy of digitizing conventional impressions to intraoral surface scans for all‐on‐four treatment in the maxillary arch. Materials and methods An edentulous maxillary arch model with four implants placed in an all‐on‐four design was fabricated. Intraoral surface scans (n = 10) were obtained using an intraoral scanner after scan body insertion. For conventional polyvinylsiloxane...

article

Hypertension is still a moving target in the context of COVID‐19 and post‐acute COVID‐19 syndrome

Mohnad Abdalla, Amr Ahmed El‐Arabey, Zhongtao Gai

Journal of Medical Virology > 95 > 1 > n/a - n/a

article

Effect of different irrigation protocols for applications in regenerative endodontics on mechanical properties of root dentin

Semha E. Elnaggar, Rania M. El Backly, Ashraf Mamdouh Zaazou, Sonia Morsy Elshabrawy, more

Australian Endodontic Journal > 47 > 2 > 228 - 235

The objective of this study was to evaluate the effect of different concentrations of NaOCl with and without passive ultrasonic irrigation (PUI) on mechanical properties of human dentin for applications in regenerative endodontics (RE). Sixty single‐rooted teeth were sectioned into 2 halves (n = 120). Dentin bars were produced from one half for flexural strength and the other half was used for microhardness...

article

Metformin and COVID‐19: A novel deal of an old drug

Amr Ahmed EL‐Arabey, Mohnad Abdalla

Journal of Medical Virology > 92 > 11 > 2293 - 2294

article

Non-contrast MR portography using time-spatial labeling inversion pulse for diagnosis of portal vein pathology

Amr Ahmed Mubarak, Ghada Elsaed Awad, Mohamed Adel Eltomey, Mahmoud Abd Elaziz Dawoud

Egyptian Journal of Radiology and Nuclear Medicine > 2019 > 50 > 1 > 1-8

Background To study the ability of non-contrast MR portography using time-spatial labeling inversion pulse (T-SLIP) as a non-invasive contrast-free imaging modality to delineate different portal vein pathological conditions.The study included 25 patients with known history of portal vein disease and another 25 age-matched patients with normal portal vein. Both groups were examined by respiratory-triggered...

article

Molecular cloning, expression, purification, and functional characterization of SP‐22 gene from Bombyx mori

Elshareef Salah Eldein, Mohnad Abdalla, Wafa Ali Eltayb, Amr Ahmed El‐Arabey, more

Journal of Cellular Biochemistry > 120 > 9 > 15594 - 15603

Serine protease (SPs) is one of the immune enzyme's molecules that play a main role in the variation of a physiological process by controlling protease actions in vertebrates. For example, signaling cells, protector and improvement, which are included in melanization, are utilized to cascade with the meddling pathogens and defense the harmed tissue in insects. In this study, we explore the biochemical...

article

Association of miRNA − 320 expression level and its target gene endothelin-1 with the susceptibility and clinical features of polycystic ovary syndrome

Nearmeen M. Rashad, Marwa Abdel-Monem Ateya, Yasser S. Saraya, Walid Mohamed Elnagar, more

Journal of Ovarian Research > 2019 > 12 > 1 > 1-10

Background Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disorder characterized by obesity, hyperandrogenism, and insulin resistance (IR). MicroRNAs (miRNAs) are small noncoding RNA associated with ovarian follicle development and female fertility. The objective of this study was to investigate the role of miRNA- 320 and its target gene endothelin-1 (ET-1) as a noninvasive biomarker...

article

Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy

GlobalSurg Collaborative, Hannah S Thomas, Thomas G Weiser, Thomas M Drake, more

British Journal of Surgery > 106 > 2 > e103 - e112

Background The World Health Organization (WHO) Surgical Safety Checklist has fostered safe practice for 10 years, yet its place in emergency surgery has not been assessed on a global scale. The aim of this study was to evaluate reported checklist use in emergency settings and examine the relationship with perioperative mortality in patients who had emergency laparotomy. Methods In two multinational...

article

Rifabutin induced multinucleated hepatocytes in rats: an overview with future prospects

Amr Ahmed EL-Arabey, Mohnad Abdalla

European Journal of Clinical Microbiology & Infectious Diseases > 2019 > 38 > 1 > 1-2

article

CENP-E as a target for cancer therapy: Where are we now?

Amr Ahmed El-Arabey, Salama Abdu Salama, Adel Rashad Abd-Allah

Life Sciences > 2018 > 208 > C > 192-200

In 2015, more than 1.6 million new cancer cases with 589,430 deaths were estimated over worldwide. Cancer is a complex disease with abnormal cell growth control which is hallmarked by chromosome misalignment and consequently genomic instability. Mitosis is a well-known target for chemotherapy as taxol and colchicines inhibit tumor cell division by inhibiting mitotic spindle plasticity. Accumulating...

article

Structure analysis of yeast glutaredoxin Grx6 protein produced in Escherichia coli

Mohnad Abdalla, Wafa Ali Eltayb, Amr Ahmed El-Arabey, Raihan Mo, more

Genes and Environment > 2018 > 40 > 1 > 1-9

Background Grx6 is a yeast Golgi/endoplasmic reticulum protein involved in iron-sulfur binding that belongs to monothiol glutaredoxin-protein family. Grx6 has been biochemically characterized previously. Grx6 contains a conserved cysteine residue (Cys-136). Depending on the active-site sequences, Grxs can be classified to classic dithiol Grxs with a CXXC motif known as classes II and monothiol Grxs...

article

Correction to: New insight for metformin against bladder cancer

Amr Ahmed EL-Arabey

Genes and Environment > 2018 > 40 > 1 > 1-1

The author noted a few errors in the original article [1] need correction. The correct content is below.

article

Dienogest Versus Leuprolide Acetate for Recurrent Pelvic Pain Following Laparoscopic Treatment of Endometriosis

Ahmed Mahmoud Abdou, Islam Mohamed Magdi Ammar, Amr Abd Almohsen Alnemr, Amr Ahmed Abdelrhman

The Journal of Obstetrics and Gynecology of India > 2018 > 68 > 4 > 306-313

Objective To compare the efficacy and safety of dienogest (DNG) with depot leuprolide acetate (LA) in patients with recurrent pelvic pain following laparoscopic surgery for endometriosis. Design Prospective randomized trial. Setting Zagazig University hospitals, Egypt. Patients Two hundred and forty-two patients with recurrent pelvic pain following laparoscopic surgery for endometriosis. Intervention...

article

Modeling clinician medical-knowledge in terms of med-level features for semantic content-based mammogram retrieval

Abir Baâzaoui, Walid Barhoumi, Amr Ahmed, Ezzeddine Zagrouba

Expert Systems with Applications > 2018 > 94 > C > 11-20

The huge volume of variability in real-world medical images such as on dimensionality, modality and shape, makes necessary efficient medical image retrieval systems for assisting physicians to perform more accurate diagnoses. However, the major limitation of these systems is the semantic gap, which is the difference between low-level features of images and their high-level semantics in a given situation...

article

Ethanol-induced PGE2 up-regulates Aβ production through PKA/CREB signaling pathway

Amr Ahmed Gabr, Hyun Jik Lee, Xaykham Onphachanh, Young Hyun Jung, more

Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease > 2017 > 1863 > 11 > 2942-2953

Ethanol abuse aggravates dementia-associated cognitive defects through the progression of Alzheimer's disease (AD) pathophysiology. Beta-site APP-cleaving enzyme 1 (BACE1) has been considered as a key regulator of AD pathogenesis by controlling amyloid beta peptide (Aβ) accumulation. In addition, previous studies reported that endoplasmic reticulum (ER) stress and neuroinflammation have been proposed...

article

Networked Control and Power Management of AC/DC Hybrid Microgrids

Amr Ahmed A. Radwan, Yasser Abdel-Rady I. Mohamed

IEEE Systems Journal > 2017 > 11 > 3 > 1662 - 1673

This paper addresses power management and control strategies of a hybrid microgrid system that comprises ac and dc subgrids. Each subgrid consists of multiple distributed generation (DG) units and local loads. Both entities are interconnected by voltage source converters (VSCs) to facilitate a bidirectional power flow and increase the system reliability. The control of the interconnecting VSC can...

article

Graph-based video sequence matching using dominant colour graph profile (DCGP)

Saddam Bekhet, Amr Ahmed

Signal, Image and Video Processing > 2018 > 12 > 2 > 291-298

This paper presents a fast and effective technique for videos’ visual similarity detection and measurement using compact fixed-length signatures. The proposed technique (dominant colour graph profile DCGP) extracts and encodes the spatio-temporal information of a given video shot into a graph-based structure (tree) that fully captures this vital information. The graph structured properties are utilized...

article

Enhancement of high glucose‐induced PINK1 expression by melatonin stimulates neuronal cell survival: Involvement of MT₂/Akt/NF‐κB pathway

Xaykham Onphachanh, Hyun Jik Lee, Jae Ryong Lim, Young Hyun Jung, more

Journal of Pineal Research > 63 > 2 > n/a - n/a

Hyperglycemia is a representative hallmark and risk factor for diabetes mellitus (DM) and is closely linked to DM‐associated neuronal cell death. Previous investigators reported on a genome‐wide association study and showed relationships between DM and melatonin receptor (MT), highlighting the role of MT signaling by assessing melatonin in DM. However, the role of MT signaling in DM pathogenesis is...

article

Dihydrotestosterone as mediator for cisplatin induced nephrotoxicity: New insight down the road

Amr Ahmed EL-Arabey

Toxicology > 2017 > 387 > C > 108

article

Evaluation of Root and Canal Morphology of Maxillary Permanent Molars in an Egyptian Population by Cone-beam Computed Tomography

Ahmed Mostafa Ghobashy, Mohamed Mokhtar Nagy, Amr Ahmed Bayoumi

Journal of Endodontics > 2017 > 43 > 7 > 1089-1092

The purpose of this study was to evaluate the number of roots and canal morphology of maxillary permanent molars in an Egyptian population.Six hundred fifty-seven cases were included in this study. Digitized images from cone-beam computed tomographic scanning were assessed by 2 endodontists. The number of roots and canal configuration according to Vertucci were tabulated. Age, sex, and bilateral distribution...

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Search results for: Amr Ahmed

Evaluation of the trueness and precision of conventional impressions versus digital scans for the all‐on‐four treatment in the maxillary arch: An in vitro study

Hypertension is still a moving target in the context of COVID‐19 and post‐acute COVID‐19 syndrome

Effect of different irrigation protocols for applications in regenerative endodontics on mechanical properties of root dentin

Metformin and COVID‐19: A novel deal of an old drug

Non-contrast MR portography using time-spatial labeling inversion pulse for diagnosis of portal vein pathology

Molecular cloning, expression, purification, and functional characterization of SP‐22 gene from Bombyx mori

Association of miRNA − 320 expression level and its target gene endothelin-1 with the susceptibility and clinical features of polycystic ovary syndrome

Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy

Rifabutin induced multinucleated hepatocytes in rats: an overview with future prospects

CENP-E as a target for cancer therapy: Where are we now?

Structure analysis of yeast glutaredoxin Grx6 protein produced in Escherichia coli

Correction to: New insight for metformin against bladder cancer

Dienogest Versus Leuprolide Acetate for Recurrent Pelvic Pain Following Laparoscopic Treatment of Endometriosis

Modeling clinician medical-knowledge in terms of med-level features for semantic content-based mammogram retrieval

Ethanol-induced PGE2 up-regulates Aβ production through PKA/CREB signaling pathway

Networked Control and Power Management of AC/DC Hybrid Microgrids

Graph-based video sequence matching using dominant colour graph profile (DCGP)

Enhancement of high glucose‐induced PINK1 expression by melatonin stimulates neuronal cell survival: Involvement of MT₂/Akt/NF‐κB pathway

Dihydrotestosterone as mediator for cisplatin induced nephrotoxicity: New insight down the road

Evaluation of Root and Canal Morphology of Maxillary Permanent Molars in an Egyptian Population by Cone-beam Computed Tomography

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