Molecular identification of methane-consuming bacteria in the Persian Gulf: a study for microbial gas exploration.

The seepage of gaseous compounds from underground reservoirs towards the surface causes abnormalities in the population of microbial communities that consume light hydrocarbons on the surface of the reservoir. This microbial population can serve as indicators for determining the location of gas reservoirs prior to drilling operations. In this study, the simulation of methane gas leakage in the sediments of the Persian Gulf was conducted using a laboratory model.

Relapse of COVID-19-associated mucormycosis in patients receiving posaconazole as maintenance treatment.

Introduction: Coronavirus disease 2019 (COVID-19) has been associated with secondary fungal infections such as mucormycosis. We investigated the relapse rate of mucormycosis and its risk factors.

Methodology: A prospective study was conducted on COVID-19-associated mucormycosis (CAM) patients discharged from Imam Khomeini Hospital Complex, Tehran, Iran, from July 2021 to February 2022.

Clinical utility of fMRI in evaluating of LSD effect on pain-related brain networks in healthy subjects.

Objective: We aimed to evaluate the effect of Lysergic acid diethylamide (LSD) on the pain neural network (PNN) in healthy subjects using functional magnetic resonance imaging (fMRI).

Methods: Twenty healthy volunteers participated in a balanced-order crossover study, receiving intravenous administration of LSD and placebo in two fMRI scanning sessions. Brain regions associated with pain processing were analyzed by amplitude of low-frequency fluctuation (ALFF), independent component analysis (ICA), functional connectivity and dynamic casual modeling (DCM).

Effects of silymarin as adjuvant drug on serum levels of CTRP3, anti-cyclic citrullinated peptide (CCP), and high-sensitivity C-reactive protein (hs-CRP) in rheumatoid arthritis patients.

Silymarin is known for its anti-inflammatory and antioxidant properties. We investigated these effects on serum levels of CTRP3, Anti-CCP, and hs-CRP in individuals with Rheumatoid arthritis (RA). In this study, 42 individuals with RA were recruited and their serum specimens were collected, serum levels of hs-CRP, AntiCCP antibodies, and CTRP3 were measured using ELISA.

Enhanced phenanthrene biodegradation in river sediments by harnessing calcium peroxide nanoparticles and minerals in sp. DSM 7526 cultivation.

Coupling chemical oxidation and biodegradation to remediate polycyclic aromatic hydrocarbon (PAH)-contaminated sediment has recently gained significant attention. In this study, calcium peroxide nanoparticles (nCaO) were utilized as an innovative oxygen-releasing compound for in-situ chemical oxidation. The study investigates the bioremediation of phenanthrene (PHE)-contaminated sediment inoculated with sp.

Novel infrared puffing: Effect on physicochemical attributes of puffed rice ( L.).

The effect of novel infrared (IR) puffing and various IR powers (350, 450, and 550 Watts [W]) at various distances (10, 20, and 30 cm) on physicochemical characteristics of puffed rice (puffing properties, color, total phenolic content [TPC], antioxidant activity, peroxide value, and morphology) was investigated. By reducing the distance and increasing the IR power, the volume puffing was significantly increased ( < .05), and bulk density was significantly decreased ( < .

Respiratory Bacterial and Fungal Superinfections During the Third Surge of the COVID-19 Pandemic in Iran.

We characterized bacterial and fungal superinfection and evaluated the antimicrobial resistance profile against the most common superinfection-causing pathogens (, , and ). In a cross-sectional study, 192 respiratory samples were collected from patients with and without SARS-COV-2 admitted to a teaching hospital in Tehran. Superinfection proportions and the antibiotic resistance profile were assessed and compared with demographic, comorbidities, and other clinical factors.

The Effect of Oral Administration of Silymarin on Serum Levels of Tumor Necrosis Factor-α and Interleukin-1ß in Patients with Rheumatoid Arthritis.

Background: Rheumatoid Arthritis (RA) is a systemic chronic autoimmune disease. Several inflammatory agents play key roles in RA pathogenesis, among which tumor necrosis factor-alpha (TNF-α) and interleukin 1 beta (IL-1β) are of great importance. Silymarin is a potent anti-oxidant extracted from Silybummarianum L.

Effect of food and key micronutrients on Covid-19: A review.

Humanity has faced different pandemics in history. The Covid-19 pandemic has made a new course in the world caused by SARS-CoV-2 that can be transmitted to humans. Finding alternative methods to prevent and control the disease through food and some micronutrients is important.

Novel pulsed infrared radiation: Effect on microbial, chemical and sensory properties of saffron (Crocus sativus L.).

Aim: In this study, the effect of pulsed infrared (PIR) irradiation on saffron microbial, chemical and sensory properties were evaluated.

Methods And Results: The PIR power (250, 350 and 450 W), the distance of sample with irradiation source (10, 20 and 30 cm), irradiation time (0-20 min) and PIR pulse (1, 2 and 3 pulse/s) were investigated. Decontamination of total bacteria and total mould and yeast flora and microbial inactivation kinetics were determined.

Distinct microbial community along the chronic oil pollution continuum of the Persian Gulf converge with oil spill accidents.

The Persian Gulf, hosting ca. 48% of the world's oil reserves, has been chronically exposed to natural oil seepage. Oil spill studies show a shift in microbial community composition in response to oil pollution; however, the influence of chronic oil exposure on the microbial community remains unknown.

Metagenomic investigation of bacteria associated with dental lesions: a cross-sectional study.

Background: Dental caries is considered as one of the most significant global health problem over the world. Dental caries initiates from bacterial shifts within the supragingival biofilm, then a polymicrobial biofilm is formed on the surface of tooth, and finally various bacterial species aggregate in a complex-organized manner. The exploiting variability in 16S rRNA gene sequence has been considered as a cost-efficient high-throughput characterization approach in human oral microbiome investigations.

The impact of calcium peroxide on groundwater bacterial diversity during naphthalene removal by permeable reactive barrier (PRB).

Oxygen-releasing compounds (ORCs) have recently gained much attention in contaminated groundwater remediation. We investigated the impact of calcium peroxide nanoparticles on the groundwater indigenous bacteria in a bioremediation process by permeable reactive barrier (PRB). Three sand-packed columns were applied, including (1) control column (fresh groundwater), (2) natural remediation column (contaminated groundwater), and (3) biostimulation column (contaminated groundwater amended with CaO).

Biodegradation of long chain alkanes in halophilic conditions by sp. strain Est-02 isolated from saline soil.

In this study, through a multistep enrichment and isolation procedure, a halophilic bacterial strain was isolated from unpolluted saline soil, which was able to effectively and preferentially degrade long chain alkanes (especially tetracosane and octacosane). The strain was identified by 16S rRNA gene sequence as an sp. The growth of strain Est-02 was optimized at the presence of tetracosane in different NaCl concentrations, temperatures, and pH.

Bioremediation of benzene-contaminated groundwater by calcium peroxide (CaO) nanoparticles: Continuous-flow and biodiversity studies.

Calcium peroxide (CaO) nanoparticles have been extensively applied in treatment of contaminated groundwater through bioremediation or modified Fenton (MF) processes. In the present study utilization of CaO in bioremediation and MF (CaO+FeSO) reaction is investigated for benzene (50 mg/L) removal in continuous flow sand-packed columns. The results indicated that MF produced OH radicals markedly increased benzene remediation at first 30 days (up to 93%).

Application of encapsulated magnesium peroxide (MgO) nanoparticles in permeable reactive barrier (PRB) for naphthalene and toluene bioremediation from groundwater.

One of the challenges in the petroleum hydrocarbon contaminated groundwater remediation by oxygen releasing compounds (ORCs) is to identify the remediation mechanism and determine the impact of ORCs on the environment and the intrinsic groundwater microorganisms. In this research, the application of encapsulated magnesium peroxide (MgO) nanoparticles in the permeable reactive barrier (PRB) for bioremediation of the groundwater contaminated by toluene and naphthalene was studied in the continuous flow sand-packed plexiglass columns within 50 d experiments. For the biodiversity studies, next generation sequencing (NGS) of the 16S rRNA gene was applied.

Application of magnesium peroxide (MgO) nanoparticles for toluene remediation from groundwater: batch and column studies.

In the present study, magnesium peroxide (MgO) nanoparticles were synthesized by electro-deposition process and characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The batch experiments were conducted to evaluate the MgO half-life (600 mg/L) in groundwater under various temperatures (4, 15, and 30 °C) and initial pH (3, 7, and 12). The effect of Fe ions (enhanced oxidation) on the toluene remediation by MgO was also investigated.

Naphthalene remediation form groundwater by calcium peroxide (CaO) nanoparticles in permeable reactive barrier (PRB).

This study investigated the applicability of synthesized calcium peroxide (CaO) nanoparticles for naphthalene bioremediation by permeable reactive barrier (PRB) from groundwater. According to the batch experiments the application of 400 mg/L of CaO nanoparticles was the optimum concentration for naphthalene (20 mg/L) bioremediation. Furthermore, the effect of environmental conditions on the stability of nanoparticles showed the tremendous impacts of the initial pH and temperature on the stability and oxygen releasing potential of CaO.

Bioremediation of oil-based drill cuttings by a halophilic consortium isolated from oil-contaminated saline soil.

Oil-based drill cuttings are hazardous wastes containing complex hydrocarbons, heavy metals, and brine. Their remediation is a crucial step before release to the environment. In this work, we enriched a halophilic consortium, from oil-polluted saline soil, which is capable of degrading diesel as the main pollutant of oil-based drill cuttings.

Prauserella oleivorans sp. nov., a halophilic and thermotolerant crude-oil-degrading actinobacterium isolated from an oil-contaminated mud pit.

A crude-oil-degrading, Gram-stain-positive actinobacterial strain, RIPIT, was isolated from a soil sample collected from an oil-contaminated mud pit in Khangiran oil and gas field, in the north-east of Iran. RIPIT was strictly aerobic, catalase- and oxidase-positive. The strain grew with 0-12.

Benzene-contaminated groundwater remediation using calcium peroxide nanoparticles: synthesis and process optimization.

Nano-size calcium peroxide (nCaO) is an appropriate oxygen source which can meet the needs of in situ chemical oxidation (ISCO) for contaminant remediation from groundwater. In the present study, an easy to handle procedure for synthesis of CaO nanoparticles has been investigated. Modeling and optimization of synthesis process was performed by application of response surface methodology (RSM) and central composite rotatable design (CCRD) method.

Silymarin (Livergol®) Decreases Disease Activity Score in Patients with Rheumatoid Arthritis: A Non-randomized Single-arm Clinical Trial.

Rheumatoid arthritis (RA) is a chronic autoimmune disease, which can lead to joint destruction and disability. Pannus formation due to chronic synovitis is the hallmark of RA. Oxidative stress as a consequence of immune cell activation and disease-modifying anti-rheumatic drugs can prevent inflammation and tissue destruction.

Investigation of transient forms of sulfur during biological treatment of spent caustic.

In the present study, the production of various transient forms of sulfur during biological oxidation of sulfidic spent caustics under haloalkaline conditions in a stirred tank bioreactor is investigated. Also, the effects of abiotic aeration (chemical oxidation), dissolved oxygen (DO) concentration and sodium concentration on forms of sulfur during biological treatment are demonstrated. Thioalkalivibrio versutus strain was used for sulfide oxidation in spent caustic (SC).