amanollah zarei ahmady

In this study, a new environmentally friendly method for the synthesis of technical Fenitrothion is offered. Apart from using ionic liquid as the innocuous and recoverable solvent, this methodology offers sonochemical-assisted synthesis. Technical Fenitrothion has been obtained from the reaction of 3-methyl-4-nitrophenol as a critical intermediate in this green method. According to this methodology, m-cresol is nitrated by ferric nitrate as the nitrating agent in the presence of triethyl ammonium nitrate ionic liquid as a recoverable protic solvent under ultrasonic irradiation, in short reaction time and high yield. Ionic liquid caused more para selectivity of nitration by steric hindrance through hydrogen bond formation with phenolic oxygen, which inhibited ortho substitution of the aromatic ring, and 4-isomer obtained as the major product. The developed process provided task-specific ionic liquid preparation from by-products and the possibility of recycling the ionic liquid for five consecutive runs, which has the benefit of eliminating waste products generated out of this procedure following green chemistry principles.

In the present work, Se and Mn analysis was carried out among some popular Iranian herbal drops to monitor a possible accumulation of adverse elements. In this study, five different herbal drops present in Iranian market were selected, and 45 samples of each (totally 225 samples) were collected, and analyzed for the presence and determination of selenium and manganese using graphite furnace atomic absorption spectrometry. Samples were prepared by the dry ashing method at 450 °C, and the residue was dissolved in nitric acid. Se and Mn contents were determined using calibration curves at wavelength 196.0 and 279.5 nm respectively. LOD of the methods were determined as 9.1 µgL-1 for Se and 0.9 µgL-1 for Mn. LOQs were calculated to be 30.0 and 3.0 µgL-1 for Se and Mn, respectively. The Se concentrations in the determined samples were between ND-21.0 µgL-1 and for Mn were in the range of 7.2-1840.7 µgL-1. Mean Se and Mn concentrations (µgL-1) were 4.7 and 43.7 for Vitagnus, 9.6 and 185.1 for Hypiran, 13.3 and 338.5 for Carminat, 21.0 and 1840.7 for Persica, and ND and 7.2 for Menthol, respectively. The results showed that Mn was present in all of the samples analyzed, but no selenium was detected in some herbal drop samples.

Acute gastroenteritis in children is a major cause of morbidity in the world. This study investigated the effect of suspension prepared from date seed in reducing the severity and duration of diarrhea in gastroenteritis pediatrics.

Participants in this clinical trial study comprised 140 gastroenteritis pediatrics referred to Abuzar Children’s Hospital in Ahvaz. Eligible patients were randomly assigned to experimental and control groups. The intervention group was given 5% date seed suspension in the amount of 12 mg/kg of body weight orally once every 8 hours for 7 days; the control group was administered a placebo three times a day. Then the two groups were compared for severity and duration of diarrhea as well as stool volume.

The duration and severity of diarrhea were significantly less in children in the intervention group than in the control group (p<0.05). The mean duration of diarrhea in the intervention and control groups was 3.508±1.102 and 4.680±4.001 days, respectively. The mean severity of diarrhea, decreased at 24 hours (2.0857±0.607; 1.8571±0.747), 48 hours (1.7429±0.695; 1.2571±0.695), 72 hours (1.1000±0.695; 0.7857±0.814), and 96 hours (0.5429±0.629; 0.4143±0.577) after the intervention and was lower in the intervention group than the control group, and the difference between the two groups was significant (p=0.001). Moreover, stool consistency was higher in the intervention group than in the control group after the consumption of date seed suspension (p<0.05).

Our results confirm the effectiveness of the herbal medicine prepared from date seed waste for control and treatment of gastroenteritis.

Bifunctional radiosensitizer agents in which nitroaromatic moieties are attached through a linker to antineoplastic moieties have demonstrated higher cytotoxicity and radiosensitizer effects than the corresponding counterparts. This study was conducted to investigate the cytotoxicity and radiosensitizer activities of 2, 4-dinitrobenzene as a radiosensitizer moiety which connected to α, β unsaturated aryl ketones against the radioresistant human HT29 colon cancer cells. A series of bifunctional radiosensitizer derivatives that are composed of electron-affinic 2, 4-dinitrophenyl moiety and thiol reactive unsaturated conjugated ketones were prepared. The designed compounds were synthesized by the reaction of the corresponding 2, 4-dinitrobenzaldehyde, cyclohexanone and different aryl aldehydes. The cytotoxicity and radiosensitizer activity of the tested compounds were examined against HT29 colon cancer cells under aerobic condition. The IC50 value of the tested compounds and percent of survival cells were analyzed by the MTT assay. The clonogenic assay was used to assess the cell viability following treatment with the tested compounds with or without the combination of radiation. This approach demonstrated that the tested compounds at the concentrations utilized have little or no cytotoxicity towards the radioresistant HT29 cell line but have great cytotoxicity and radiosensitizer activity when combined with irradiation. The novel bifunctional unsaturated conjugated aryl ketones which are thiol alkylators found to exhibit radiosensitivity activity. Consequently, these new developed compounds should be evaluated further to assess their potential efficacy with radiotherapy to combat malignancies in a pre-clinical animal model.

Sulfuric acid functionalized magnetic nanocatalyst (SAMNC) has been prepared as an efficientacidic and applied in the one-pot preparation of 2,3-dihydroquinazolin-4 (1H) -one derivatives.This catalyst has been characterized by FT-IR, SEM, and VSM. According to the obtainedresults, including time, yield and recyclability, SAMNC could be considered as an efficient catalystfor organic transformations.

This study aimed to screen Thais savignyi whole body extracts for antibacterial activity against clinical isolates of some human pathogenic bacteria and analyze its biochemical compounds, including carbohydrate, proteins, alkaloids, cholesterol, unsaturated fatty acids, as well as functional groups and elements.
Well agar diffusion was used for screening of acetone and methanol extracts against clinical isolates of E. coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bacillus cereus, and Staphylococcus aureus. Biuret and SDS-PAGE methods were applied for quantitative and qualitative protein evaluation. Anthrone method was used for quantitative and qualitative analysis of carbohydrates. Wagner and Mayer's reagents were employed for alkaloid screening. The Liebermann-Burchard test was performed for the detection of cholesterol, infrared for identifying functional groups, and Dumas method for elemental analysis.
Acetone and methanol crude extracts at 0.2 mg/mL concentration inhibited the growth of all the test bacteria; however, the methanol extract was more effective than the acetone extract. The maximum zone of inhibition of the methanol extract was observed against B. cereus (16 mm). Minimal inhibitory concentration of the most effective fraction ranged between 12.5 and 100 µg/mL. Elemental analysis of the bioactive fraction showed 41.55% carbon, 9.49% hydrogen, 6.13% nitrogen, and 1.64% sulfur. IR spectra confirmed the presence of aliphatic, alkenes, secondary amines, and disulfide groups in the most effective fraction of methanol extract of Thais savignyi. Carbohydrate and protein analysis revealed 4.5% carbohydrate and 9% protein. SDS-PAGE disclosed 5 separate bands with 70, 53, 41, 30, and 22 kilodaltons. Wagner and Mayer test showed the presence of alkaloids; mercuric and iodine solutions indicated the presence of unsaturated fatty acids; cholesterol was detected by Liebermann-Burchard reaction and Salkowski test.
The findings of this study suggest that Thais savignyi has antibacterial potential and can be recommended as a source of bioactive compounds of medicinal value.

Bacillus species are the predominant soil bacteria because of their resistant-endospore formation and production of essential antibiotics such as bacitracin.. The aim of this study was to isolate Bacillus spp. from riverside soil and investigate their antimicrobial characteristics against some pathogenic bacteria.. Fifty soil samples were collected from different sites of Bahmanshir riverside in Abadan city, Iran, and analyzed for the presence of Bacillus species. The media used in this research were nutrient broth and agar. Bacillus species were identified by their phenotypic and biochemical characteristics. The antimicrobial effects of Bacillus extract against the target bacteria including Escherichia coli, Staphylococcus aureus, Salmonella typhi, Shigella dysenteriae and Corynebacterium diphtheriae were examined.. The identified Bacillus species included B. cereus (86.6%), B. subtilis (6.6%), B. thuringiensis (3.3%), and B. pumilus (3.3%). Evaluation of the antimicrobial activity of the extracted compounds was carried out against five different bacteria. Antibiotic production tests indicated that two Bacillus strains belong to B. cereus, which showed antimicrobial properties. The minimum inhibitory concentrations (MICs) of these compounds ranged between 8.34-33.34 mg/mL for the target bacteria.. This study indicated that some Bacillus species have the potential to produce antimicrobial compounds which can be used to control microbial infections..