The Impact of Chitosan Nanoparticles Coating with Sodium Lactate on Beef Hamburger Quality during Storage at 4°C: Oxidative Stability, Microbial and Sensorial Characteristics.

In this study, the nano chitosan particles were produced by ionotropic gelation between sodium tripolyphosphate and chitosan. The effect of nano chitosan with or without sodium lactate coating was evaluated on physicochemical (pH, thiobarbituric acid, total volatile basic nitrogen, and peroxide), microbial (total mesophilic and psychrotrophic viable counts, lactic acid bacteria, yeasts, and molds), and sensorial properties of beef burgers within 24 days of storage at 4°C. The solutions of 1% nano chitosan (T), 2% nano chitosan (T), 2.

General dentists' treatment plans in response to cosmetic complains; a field study using unannounced-standardized-patient.

Background: This field study explored general dentists' treatment plans in response to the request for cosmetic services of an unannounced standardized patient (USP) in Mashhad, Iran.

Methods: The researcher, as a USP, visited 24 and 23 offices in a high-income and a low-income area, respectively. The primary complaint was that, according to her friend's comments, a dental student, her smile was "crooked and yellow" due to the congenitally missing tooth number 10 and peg-shaped tooth number 8.

Hypnosis and nitrous oxide impact on the school aged patients' anxiety and cooperation candidate for tooth extraction: A randomized clinical trial.

Background: This randomized clinical trial (RCT) investigated whether hypnosis would lead to favorable outcomes in reducing anxiety, enhancing cooperation, and improving physiological responses in school-aged children undergoing tooth extraction compared to nitrous oxide/oxygen (NO/O) and conventional behavior guidance (CBG).

Methods: Sixty-six school-aged children (mean age: 7.87 ± 1.

Analysis of the Frequency, Antibiotic Susceptibility, and Related Genes among Foodborne Pathogenic Bacteria Isolated from Hospital Refrigerators in Tehran, Iran.

Background: Hospital refrigerators as essential food storage can be important source of food contamination. We aimed to investigate the frequency and antibiotic susceptibility of the pathogenic bacteria in three hospital refrigerators in Tehran.

Methods: This study was performed on 254 samples, collected from 60 refrigerators of the various wards of three hospitals, A, B, and C, in Tehran, Iran from 2020 to 2021.

A robust optimization model for multi-objective blood supply chain network considering scenario analysis under uncertainty: a multi-objective approach.

Annually, different regions of the world are affected by natural disasters such as floods and earthquakes, resulting in significant loss of lives and financial resources. These events necessitate rescue operations, including the provision and distribution of relief items like food and clothing. One of the most critical challenges in such crises is meeting the blood requirement, as an efficient and reliable blood supply chain is indispensable.

Phylogenetic Analysis and Genetics Polymorphisms Evaluation of and Genes of in Livestock and Poultry Hosts of Yazd, Qom and Golestan Provinces of Iran.

Background: A high correlation is observed between specific clonal lineages and host types in toxoplasmosis. The main objectives of this study were comparing polymorphism and evolutionary analysis of the and genes, as well as the evaluation of phylogenic and isolates obtained from different hosts and regions.

Methods: Overall 96 brain/diaphragm tissue samples of livestock and poultry from three provinces of Iran (cows: 9 from Yazd, 9 from Qom; sheep: 19 from Yazd, 7 from Qom; goats: 7 from Yazd, 4 from Qom; one camel from Yazd and 37 chickens, 2 roosters and one duck from Golestan) were tested during 2018-19.

An investigation on protective effects of the new killed vaccine against nervous necrosis virus (NNV) using histopathology and immunohistochemistry approach on the brain and eye tissues of Acipenser stellatus Pallas 1771.

The objective of this study was to analyze the efficiency of the killed vaccine against nervous necrosis virus on Acipenser stellutus. Heat inactivated VNN vaccine was administrated in 7 g juveniles of Acipenser stellutus as a laboratory model and it was included in three different adjuvants that were used as injection and immersion forms with different doses. Ten groups consisting of 30 A.

Designing and developing of high-resolution melting technique for separating different types of Toxoplasma gondii by analysis of B1 and ROP8 gene regions.

Background: Determination of Toxoplasma gondii genotypes plays an important role in the health management and epidemiology of toxoplasmosis. We developed HRM analysis to differentiate genotypes of T. gondii using the B1 and ROP8 genes, through comparing the sensitivity and specificity of both genes and methods used for the detection of T.

Identification of (Z)-2,3-Diphenylacrylonitrileas Anti-Cancer Molecule in Persian Gulf Sea Cucumber Holothuria parva.

Hepatocellular carcinoma (HCC), also named cancerous hepatoma, is the most common type of malignant neoplasia of the liver. In this research, we screened the Persian Gulf sea cucumber () methanolic sub-fractions for the possible existence of selective toxicity on liver mitochondria isolated from an animal model of HCC. Next, we purified the most active fraction.

Selective toxicity of persian gulf sea cucumber holothuria parva on human chronic lymphocytic leukemia b lymphocytes by direct mitochondrial targeting.

Natural products isolated from marine environment are well known for their pharmacodynamic potential in diversity of disease treatments such as cancer or inflammatory conditions. Sea cucumbers are one of the marine animals of the phylum Echinoderm. Many studies have shown that the sea cucumber contains antioxidants and anti-cancer compounds.

Selective Toxicity of Persian Gulf Sea Cucumber (Holothuria parva) and Sponge (Haliclona oculata) Methanolic Extracts on Liver Mitochondria Isolated from an Animal Model of Hepatocellular Carcinoma.

Background: Natural products isolated from marine environments are well known for their pharmacodynamic potential in diverse disease treatments, such as for cancer or inflammatory conditions. Sea cucumbers are marine animals of the phylum Echinoderm and the class Holothuroidea, with leathery skin and gelatinous bodies. Sponges are important components of Persian Gulf animal communities, and the marine sponges of the genus Haliclona have been known to display broad-spectrum biological activity.

Antifungal and antibacterial activity of Haliclona sp. from the Persian Gulf, Iran.

In this study, antifungal and antibacterial activities of diethyl ether, methanol and aqueous extracts of Haliclona sp. were assessed (in vitro). The antibacterial activity of the extracts was determined by broth dilution methods against clinical Gram-negative bacteria: Escherichia coli, Pseudomonas aeruginosa and Gram-positive bacteria: Staphylococcus aureus aureus, Bacillus subtilis spizizenii.

Ichthyotoxic Cochlodinium polykrikoides Induces Mitochondrial Mediated Oxidative Stress and Apoptosis in Rat Liver Hepatocytes.

In this research, we investigated the cytotoxic mechanisms of Cochlodinium polykrikoidescell lysate on isolated rat liver hepatocytes.This micro algae is responsible for a severe and widespread harmful algal bloom in the Persian Gulf and Gulf of Oman (2008-2009). Isolated hepatocytes were obtained by collagenase perfusion of Sprague-Dawley rat liver.

Oxidative mechanisms of fish hepatocyte toxicity by the harmful dinoflagellate Cochlodinium polykrikoides.

Harmful Algal Blooms caused by the marine ichthyotoxic dinoflagellate Cochlodinium polykrikoides are responsible for mass mortalities of wild and farmed fish worldwide. In this research, we investigated the cytotoxic mechanisms of aqueous extract of C. polykrikoides on isolated Rainbow trout (Oncorhynchus mykiss) liver hepatocytes.

Characterization of a chitinase with antifungal activity from a native Serratia marcescens B4A.

Chitinases have the ability of chitin digestion that constitutes a main compound of the cell wall in many of the phytopathogens such as fungi. In the following investigation, a novel chitinase with antifungal activity was characterized from a native Serratia marcescens B4A. Partially purified enzyme had an apparent molecular mass of 54 kDa.

Radioactivity concentrations in sediments on the coast of the Iranian province of Khuzestan in the Northern Persian Gulf.

Gamma-ray spectrometric analyses were performed on sediment samples from the coast of Khuzestan province (south west of Iran, neighbor to Iraq and Kuwait) to study the concentration of natural as well as man-made radioactive sources. The coast of Khuzestan, which extends for approximately 400 km is mainly soft areas of mud flats within different ecosystems including river mouth, estuaries, creeps, and small bays. Suspended material from the Iranian rivers including Arvand (Karun), Bahmanshir, Jarrahi, and Zohreh has settled to form these extensive soft areas.

Seasonal study of aflatoxin M1 contamination in milk in five regions in Iran.

Between April 2003 and February 2004, 98 samples of raw milk were obtained from milk tanks in one dairy plant in each of five regions in Iran. These were chosen with mean distances apart of 400 km, whereby they have different ecologies (temperature, relative humidity, etc.) and different agricultural products were used for animal feeding.