The ameliorative effects of L-arginine on testicular and genotoxic toxicity induced by chronic exposure to cadmium chloride in male murine models.

Cadmium (Cd) is a toxic heavy metal known to cause DNA damage, genetic alterations, and reproductive issues in males through free radical production. This study investigates L-arginine, an amino acid with antioxidant and metal-chelating properties, in mitigating Cd-induced genetic and reproductive toxicity in male mice. Thirty-six male mice were divided into six groups: a control group, a Cd group (2 mg/kg), three groups receiving Cd (2 mg/kg) combined with L-arginine (50, 100, 200 mg/kg), and a positive control group receiving vitamin C (500 mg/kg) with Cd.

Temporal networks in biology and medicine: a survey on models, algorithms, and tools.

The use of static graphs for modelling and analysis of biological and biomedical data plays a key role in biomedical research. However, many real-world scenarios present dynamic behaviours resulting in both node and edges modification as well as feature evolution. Consequently, ad-hoc models for capturing these evolutions along the time have been introduced, also referred to as dynamic, temporal, time-varying graphs.

Topical administration of Juglans regia L. leaf extract accelerates diabetic wound healing.

Background: Diabetic wounds are one of the most important issues in diabetic patients. It seems that Juglans regia L. leaf with antioxidant and anti-inflammatory potentials can be profitable for healing of diabetic wounds.

Meningioma as the host for metastatic breast cancer: A rare occurrence with important therapeutic impact.

Background: Tumor-to-tumor metastasis is a rare condition. There are few reports of metastatic tumors within intracranial tumors, including meningiomas. Since some metastatic tumors have osteoblastic imaging pattern, it is not always easy to differentiate them from meningioma on preoperative studies.

Investigation of long-term hazards of chemical weapon agents in the environment of Sardasht area, Iran.

The present study aimed to investigate the persistence and existence of chemical warfare agents (CWAs) and related dissipation products in the environment of Sardasht area, Iran. Three types of environmental samples including water, soil, and native local plant materials were collected and analyzed. Gas chromatography-mass spectrometry in the electron impact ionization mode has been developed for the separation, screening, identification, and qualification of chemicals after the sample preparation methods.

A novel algorithm for finding top-k weighted overlapping densest connected subgraphs in dual networks.

The use of networks for modelling and analysing relations among data is currently growing. Recently, the use of a single networks for capturing all the aspects of some complex scenarios has shown some limitations. Consequently, it has been proposed to use Dual Networks (DN), a pair of related networks, to analyse complex systems.

Dexamethasone vs COVID-19: An experimental study in line with the preliminary findings of a large trial.

Background: The preliminary report of the RECOVERY large randomised controlled trial indicated a promising survival effect for dexamethasone therapy of coronavirus disease 2019 (COVID-19). This study aimed to investigate the anti-hypoxic activities of dexamethasone to understand a possible mechanism of its action in hypoxia-induced lethality through experimental models of hypoxia.

Methods: In this investigation, 84 Male BALB/c mice were randomly divided into groups of seven (12 groups).

Effects of Selenium Supplementation on Asymmetric Dimethylarginine and Cardiometabolic Risk Factors in Patients with Polycystic Ovary Syndrome.

Polycystic ovary syndrome (PCOS) is characterized by various reproductive and cardiometabolic disorders. Asymmetric dimethylarginine (ADMA) is associated with cardiovascular, metabolic, and hormonal status. Selenium, a micronutrient with antioxidant properties, could affect multiple physiological pathways.

Early clinical and radiological evaluation in patients with total ankle replacement performed by lateral approach and peroneal osteotomy.

Background: The Zimmer Trabecular Metal Total Ankle Replacement (Zimmer TM TAR) is a recent ankle arthroplasty approved for use in the United States and Europe. Many of the studies reporting the results of this implant are provided by surgeons involved at least in the initial design of the implant under study. The aim of this study is to describe the early clinical and radiological outcomes in patients who underwent this procedure performed by non-designer surgeons.

Adipokines in critical illness: A review of the evidence and knowledge gaps.

Adipose tissue products or adipokines play a major role in chronic endocrine and metabolic disorders; however, little is known about critical conditions. In this article, the experimental and clinical evidence of alterations of adipokines, adiponectin, leptin, resistin, visfatin, asymmetric dimethylarginine (ADMA), and ghrelin in critical illness, their potential metabolic, diagnostic, and prognostic value, and the gaps in the field have been reviewed. The results showed considerable changes in the concentration of the adipokines; while the impact of adipokines on metabolic disorders such as insulin resistance and inflammation has not been well documented in critically ill patients.

Models of clinical reasoning with a focus on general practice: A critical review.

Introduction: Diagnosis lies at the heart of general practice. Every day general practitioners (GPs) visit patients with a wide variety of complaints and concerns, with often minor but sometimes serious symptoms. General practice has many features which differentiate it from specialty care setting, but during the last four decades little attention was paid to clinical reasoning in general practice.

Effects of selenium supplementation on glucose homeostasis and free androgen index in women with polycystic ovary syndrome: A randomized, double blinded, placebo controlled clinical trial.

Background/objectives: Insulin resistance (IR) is a main pathophysiologic feature in polycystic ovary syndrome (PCOS) patients which is triggered by elevated oxidative stress in these patients. Selenium, an essential micronutrient, is a major constituent of antioxidant enzymes such as glutathione peroxidase. Recently, decreased plasma selenium concentrations were reported in PCOS patients.

Video-based Learning Versus Traditional Method for Preclinical Course of Complete Denture Fabrication.

Statement Of The Problem: Advances in computer science and technology allow the instructors to use instructional multimedia programs to enhance the process of learning for dental students.

Purpose: The purpose of this study was to determine the effect of a new educational modality by using videotapes on the performance of dental students in preclinical course of complete denture fabrication.

Materials And Method: This quasi-experimental study was performed on 54 junior dental students in Shahid Beheshti University of Medical Sciences (SBMU).

Evaluation of prevalence and risk factors of hepatitis g virus infection among hemodialysis patients referred to Iranian army hospitals in tehran during 2012-2013.

Background: GB virus C (GBV-C) or hepatitis G virus (HGV) is a newly discovered and enveloped RNA positive-stranded flavivirus-like particle, which has not yet been proven to have major negative effects on liver.

Objectives: Increasing the risk of blood-borne infections in hemodialysis patients is a main health care concern in different countries. Therefore, it is important to estimate the prevalence and risk factors of hepatitis G virus infection in Iranian hemodialysis patients to design standard prevention and treatment plans.

Phylogenetic relationships, recombination analysis, and genetic variability among diverse variants of tomato yellow leaf curl virus in Iran and the Arabian Peninsula: further support for a TYLCV center of diversity.

The discovery of five strains of TYLCV in Iran, including the most well-known and widespread, TYLCV-IL, spurred a detailed study of the full-length genomes of additional TYLCV field isolates and an in-depth analysis of phylogenetic relationships, extent of recombination, and genetic variability of TYLCV isolates within Iran and throughout the Arabian Peninsula. Phylogenetic analysis of complete genome sequences of TYLCV isolates from Iran and other countries revealed four monophyletic clusters could be differentiated based on geographical origin, indicating that recent dispersal of these populations (by the vector or by humans) from these four regions has occurred minimally, or not at all. Genetic analysis revealed that TYLCV-IL isolates from southern Iran possessed greater genetic variability than the northeastern isolates, a pattern that may be reflective of evolution driven by geographically dependent isolation.

Depression, prevalence and some risk factors in elderly nursing homes in tehran, iran.

Background: The most common geriatric psychiatric disorder is depression, known to be a multi factorial disorder. However, the influence of common preventable factors is yet to be discovered. This study was designed to evaluate the prevalence of depression and some possible risk factors in elderly residents of nursing homes in Iran.

The effect of omega-3 on the serum visfatin concentration in patients with type II diabetes.

Background: Visfatin is an adipocytokine which is secreted from adipose tissue and can affect on the diabetes inflammatory reaction and also serum lipids level. On the other hand, Omega-3 can also prevent formation of insulin resistance. In the present study, the effect of Omega-3 on the serum visfatin concentration was evaluated.