Publications by authors named "Mohammad Mehdi Soltan-Dallal"

Alzheimer's Disease (AD) is the primary neurodegenerative disorder in the elderly, lacking a definitive treatment. The gut microbiota influences the gut-brain axis by aiding in hypothalamic-pituitary-adrenal (HPA) axis development and neuromodulator production. Research links AD and gut microbiota, suggesting gut microbiota regulation could be a therapeutic approach for AD.

View Article and Find Full Text PDF

is the main bacterial pathogen that causes foodborne disease, particularly in developing countries. Nontyphoidal (NTS) include and as the most prevalent strains which are one of the significant causes of acute gastroenteritis in children. Therefore, identifying the most predominant serovars, types of common contaminated food, and paying attention to their antibiotic resistance are the main factors in the prevention and control strategy of salmonellosis.

View Article and Find Full Text PDF

In the present study, a synbiotic coating of flaxseed mucilage, defatted rice bran carbohydrate, and subsp. BB12 was fabricated for coating dried mango slices (M-P-C). The control samples contained only probiotic bacteria without coating (M-P).

View Article and Find Full Text PDF

Sepsis is a potentially fatal syndrome related to severe systemic inflammation developed by infection. Despite different antimicrobial therapies, morbidity and mortality rates remain high. Herbs along with cell therapy have been introduced as a promising option to improve the symptoms of sepsis.

View Article and Find Full Text PDF

The growing demand for high food quality has been encouraging researchers in the food industry to apply biodegradable nanocomposites, which provide new opportunities and challenges for the advance of nanomaterials in the food industry. The objective of this study was to estimate the antibacterial activity and cytotoxicity effects of zinc oxide nanocomposite/zeolite (c/Zeo) with gel (AG) and its effect on the shelf life of chicken meat. The ZnONPs/Zeo was assessed using X-ray fluorescence (XRF) and field emission scanning electron microscopy (FE-SEM) analyses.

View Article and Find Full Text PDF

Objectives: Salmonella enterica serovar Entritidis is an important pathogen in foodborne diseases and causes gastroenteritis. Several studies have investigated the genetic diversity of the strains of this bacterium. However, our knowledge of the discriminatory power of the molecular methods is limited.

View Article and Find Full Text PDF

Relapse infection usually results from resistance to the antibiotic, acquired genes, or persister cells. Persister cells are formed through mutation, reduced activity or metabolically inactive pathways induced by antibiotics, harassing conditions, low ATP, and malnutrition. These factors provide the ground for bacteria to grow slowly.

View Article and Find Full Text PDF

This study compares the oncolytic effect of vesicular stomatitis virus (VSV) wild type and M51R M-protein on the colorectal tumors of different invasive intensity on SW480 and HCT116 cell lines and 114 fresh colorectal cancer primary cell cultures. Fresh tumor samples were divided into two groups of lower stages (I/II) and higher stages (III/IV) regarding the medical records. The presence of two mutations in the PIK3CA gene and the expression of NEBL and AKT1 genes were evaluated.

View Article and Find Full Text PDF

Introduction: Agricultural commodities contaminated by molds and mycotoxins can be considered as public health problems in less developed countries, particularly in Iran. Hence the main purpose of this study was to identify mold fungi and molecular analysis of the most important species of aflatoxin-B1-producing species in some dried nuts and grains in local markets in Tehran.

Materials And Methods: Two hundred fifty samples of wheat, rice, corn, pistachios, and peanuts were collected from the five different locations of Tehran between January 2018 and January 2019.

View Article and Find Full Text PDF

Purpose: The use of amniotic membrane has been suggested in the treatment of infectious keratitis for its intrinsic anti-infective properties probably mediated by its anti-inflammatory effects. The aim of this study was to investigate the effect of amniotic membrane transplantation (AMT) along with ciprofloxacin to cure the primary stages of keratitis.

Methods: In total, 28 rabbits were selected and divided in four groups as follows: group 1 as control, group 2 with amniotic membrane, group 3 with ciprofloxacin, and group 4 with amniotic membrane combined with ciprofloxacin.

View Article and Find Full Text PDF

Objectives: This study aimed to evaluate antibiotic resistance profiles and presence of virulence genes among serovar Enteritidis ( Enteritidis) isolated from patients with gastroenteritis in various regions of Iran. Moreover, genetic relatedness among the strains was assessed by pulsed-field gel electrophoresis (PFGE).

Materials And Methods: From April through September 2017, 59 strains were isolated from 2116 stool samples.

View Article and Find Full Text PDF

Formation of Staphylococcus aureus biofilm causes significant infections in the human body. Biofilm forms through the aggregation of bacterial species and brings about many complications. It mediates drug resistance and persistence and facilitates the recurrence of infection at the end of antimicrobial therapy.

View Article and Find Full Text PDF

Background: show high mortality among pregnant women and newborns. This study aimed to detect in pregnant women with a history of abortion and assess the serotypes, antibiotic susceptibility patterns, and its resistance genes.

Methods: Overall, 400 vaginal swabs were taken from pregnant women with a history of abortion in the past few years in a tertiary care hospital in Tehran, Iran, during 2015-2018.

View Article and Find Full Text PDF

Foodborne diseases are caused by indigestion of contaminated food. In some cases they may result in either hospitalization or death. The Centers for Disease Control (CDC) and Prevention in 2017 stated that 10% reduction in foodborne illness would prevent nearly five million illnesses every year.

View Article and Find Full Text PDF

Lactobacilli commonly used as a probiotic and they can be isolated from various sources such as fermented foods and gastrointestinal tracts of humans and animals. The aims of this study were isolation and identification of lactobacilli from honey and investigation of some probiotic properties and antimicrobial effects against foodborne bacterial pathogens. A total of 88 honey samples were collected from different areas in Iran.

View Article and Find Full Text PDF

Salmonella is one of the most common causes of foodborne disease outbreaks in developing countries. Climatic factors such as temperature, rainfall, and relative humidity can directly increase the growth and spread of these pathogens. Therefore, the aim of this study was to investigate long-term temporal trends and seasonal patterns of Salmonella infections as well as evaluating the effects of demographic and climatic factors on the infection incidence in Yazd province, Iran during 2012-2015.

View Article and Find Full Text PDF
Article Synopsis
  • * Researchers prepared different types of extracts and analyzed their phytochemical composition using gas chromatography/mass spectrometry (GC/MS), finding dominant compounds like hexadecanoic acid.
  • * Results indicated that 80% of ciprofloxacin-resistant strains had the AcrB efflux pump, and treatment with plant extracts led to a significant reduction in the expression of the AcrB gene, suggesting potential for these extracts as natural efflux inhibitors.
View Article and Find Full Text PDF

can be categorized into many serotypes, which are specific to known hosts or broadhosts. It makes no difference which one of the serotypes would penetrate the gastrointestinal tract because they all face similar obstacles such as mucus and microbiome. However, following their penetration, some species remain in the gastrointestinal tract; yet, others spread to another organ like gallbladder.

View Article and Find Full Text PDF

Introduction: Salmonella enterica serotype Enteritidis (S. Enteritidis) is a cause of food-borne human illness. Given the prevalence of antibiotic resistance of Salmonella Enteritidis and the lack of antibiotic efficacy in future years, its replacement with other agents is necessary.

View Article and Find Full Text PDF

The aim of this study was to evaluate the resistance and virulence characteristics of strains of clinical and environmental origins over a 5-year period in Iran and to determine the genetic diversity of strains using pulsed-field gel electrophoresis (PFGE) method. A total of 20 strains were collected from 850 stool samples of patients with diarrhea, and 18 e spp. including 10 were collected from water, food, and vegetable samples.

View Article and Find Full Text PDF

Background: The aim of this study was to assess associations of foodborne outbreaks with environmental factors in various regions of Yazd Province, Iran, 2012-2016.

Methods: The public health surveillance data were used for one period of five years reported foodborne disease outbreaks in various regions of the Province. Multilevel regression statistical method was used to analyze associations of climatic and demographic variables with outbreaks.

View Article and Find Full Text PDF

Background: Salmonellosis is a major food-borne disease worldwide. The increasing prevalence of antimicrobial resistance among food-borne pathogens such as Salmonella spp. is concerning.

View Article and Find Full Text PDF
Article Synopsis
  • * Out of 400 vaginal swabs collected, 5.5% tested positive for L. monocytogenes, with a high resistance rate to medications like trimethoprim/sulfamethoxazole and chloramphenicol.
  • * Findings emphasized the importance of assessing virulence factors and antibiotic susceptibility to enhance treatment strategies for listeriosis, specifically highlighting the serotype distribution and presence of specific virulence genes.
View Article and Find Full Text PDF

Infection with Shigella is considered a major cause of morbidity and mortality in children with diarrhea in developing countries, especially in Iran. Due to the importance of country-level epidemiological data, molecular characterization of genetic determinants of Shigella spp. is a necessity.

View Article and Find Full Text PDF