5,509 results match your criteria: "Hamadan University[Affiliation]"

The impact of Trifolium pratense extract on apoptosis and autophagy in NALM-6 cells: implications for B-ALL intervention.

Med Oncol

October 2024

Division of Hematology and Blood Bank, Department of Laboratory Science, School of Paramedical Science, Shiraz University of Medical Sciences, Shiraz, Iran.

B-cell acute lymphoblastic leukemia (B-ALL), a prevalent malignancy predominantly affecting children, poses challenges such as drug resistance and cytotoxicity despite available treatment methods. The persistence of these challenges underscores the necessity for innovative therapeutic approaches to enhance efficacy. Natural compounds derived from plants, recognized for their potential to inhibit cancer cell growth, have drawn attention.

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Synthesis and biological assessment of novel 4H-chromene-3-carbonitrile derivatives as tyrosinase inhibitors.

BMC Chem

September 2024

Department of Persian Medicine, School of Medicine, Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.

Article Synopsis
  • Excessive tyrosinase activity leads to hyperpigmentation, necessitating the development of effective inhibitors to treat this skin condition.
  • In this study, novel 4H-chromene-3-carbonitrile compounds were synthesized and compound 6f showed the highest tyrosinase inhibition, performing better than the known inhibitor, kojic acid.
  • Molecular studies revealed that the R-enantiomer of compound 6f has greater binding stability and competitive inhibition, highlighting its potential as a strong candidate for treating hyperpigmentation.
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  • Pseudomonas aeruginosa forms biofilms that protect it from antibiotics and immune responses, leading to hard-to-treat chronic infections.
  • This study tested the effectiveness of sub-lethal doses of antimicrobial photodynamic inactivation (sAPDI) using carbon dots from gentamicin and imipenem to reduce biofilm formation and gene expression related to P. aeruginosa biofilms.
  • Results showed that sAPDI significantly reduced biofilm activity and gene expression associated with biofilm formation, suggesting it could be a promising treatment strategy against P. aeruginosa infections.
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  • Coronary Slow Flow Phenomenon (CSFP) is a condition where coronary arteries show delayed blood flow even though they appear normal in angiograms; this study aimed to assess the impact of atorvastatin on left ventricular (LV) strain in CSFP patients.
  • The study involved 51 patients receiving 40 mg of atorvastatin daily for eight weeks, with left ventricular function measured using echocardiograms before and after treatment.
  • Results showed significant improvements in LV strain and function after atorvastatin treatment, but it did not significantly affect right ventricular function or pulmonary artery pressure.
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Background: Given the limited research conducted on the role of a human co-driver in mitigating occupational health and safety risks, this study aims to investigate the impact of a co-driver on health and safety conditions in the truck transportation process.

Methods: The truck transportation process was divided into three main stages: truck loading, driving, and unloading. Using the job safety analysis (JSA) method, an analysis of the tasks within each stage was conducted, allowing for the identification of essential and safe tasks and conditions.

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  • Twelve new 3,4-dihydropyrimidine derivatives were created using a Biginelli reaction, and their effectiveness against cancer cells (MCF-7, A549, and HeLa) was tested.
  • Compound 5l, which has a 4-Cl-phenyl group, showed the highest potency against A549 cells, suggesting modifications at the C4 position improve cytotoxicity.
  • Molecular studies indicated that the R enantiomer of compound 5l binds more effectively to the Eg5 enzyme than the S enantiomer, potentially enhancing its anti-cancer properties.
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  • A needle trap device (NTD) was created using a specific framework bonded to silica nanoparticles to analyze halogenated hydrocarbons (HHCs) in the air through gas chromatography-flame ionization detection (GC-FID).
  • The study utilized advanced characterization techniques to determine optimal experimental conditions, significantly reducing the need for extensive testing, material use, and costs.
  • Results showed that the NTD-GC-FID method is reliable and accurate for sampling HHCs in workplace air, aligning well with existing standard procedures for environmental monitoring.
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  • In a study on male Wistar rats, researchers examined how flaxseed oil (FS-oil) affects kidney damage caused by diazinon (DZN), a toxic chemical.
  • The rats were divided into groups, receiving either DZN alone or DZN along with different doses of FS-oil for 28 days, after which various kidney functions were assessed.
  • The results showed that FS-oil improved kidney health by enhancing enzyme levels, reducing oxidative stress, and positively affecting tissue structure, suggesting its potential as a protective agent against DZN-induced toxicity.
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  • Toxoplasmosis is a prevalent parasite globally, and the study aims to find new, safer treatments for pregnant women and infants using nanoemulsion miltefosine (NEM).
  • NEM was formulated using triacetin, Tween 80, and ethanol, and when tested on mice and rats, it showed varying effectiveness against acute and chronic toxoplasmosis compared to other treatments like sulfadiazine (SDZ) and pyrimethamine (PYR).
  • The findings suggest that NEM effectively penetrates the blood-brain barrier, significantly reducing the number and size of tissue cysts in chronic toxoplasmosis, positioning it as a hopeful new therapeutic option.
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  • * Using data from 534 patients, the SVM model achieved 83.08% sensitivity, 80.21% specificity, and an overall accuracy of 81.37%, indicating good diagnostic performance.
  • * While the SVM shows promise for clinical use in diagnosing acute cholecystitis, further improvements and validations are necessary for enhanced reliability.
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Cacao Ameliorates Amyloid Beta-Induced Cognitive and Non-Cognitive Disturbances.

Neurosci Insights

September 2024

Department of Animal Sciences and Marine Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran.

Background: Alzheimer's disease (AD) is a progressive neurological disorder characterized by a wide range of cognitive and non-cognitive impairments. The present study was designed to investigate the potential effects of cacao on cognitive and non-cognitive performance and to identify the role of oxidative stress in an AD animal model induced by unilateral intracerebroventricular (U-ICV) injection of amyloid beta (Aβ).

Methods: Oral administration of cacao (0.

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The Effect of Probiotics and Microbiota on Nervous System and Mental Illnesses.

Cent Nerv Syst Agents Med Chem

September 2024

Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.

The microbiota that inhabits the gastrointestinal tract has been linked to various gastrointestinal and non-gastrointestinal disorders. Scientists have been studying how the bacteria in our intestines have an effect on our brain and nervous system. This connection is called the "microbiota- gut-brain axis".

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Background: This in vitro study aimed to investigate the effect of several phenolic compounds, including doxorubicin, quercetin, and resveratrol, on HSV-1 infection.

Methods: The cytotoxicity of the drugs was assessed on Vero cells using the MTT assay. HSV-1 was treated with the drugs, and the supernatants were collected at various time points.

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  • This study explores how machine learning (ML) can help understand the link between ergonomic risk factors and work-related musculoskeletal disorders (WMSDs) in office workers, specifically targeting neck issues.
  • Using data from 311 office workers, the researchers applied ML techniques like neighborhood component analysis (NCA) and algorithms such as support vector machines (SVMs) and decision trees to classify the effects of various factors on neck disorders.
  • The resulting models showed high accuracy in predicting WMSDs based on factors like age, body mass index, ergonomic interventions, and quality of work life (QWL), emphasizing that both individual and management interventions can significantly reduce these disorders.
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Background: Rotavirus is the most common cause of gastroenteritis among children. Currently, four oral live-attenuated vaccines are available to prevent rotavirus infection. The World Health Organization (WHO) has recommended including rotavirus vaccination in national immunization programs; however, it has not been introduced to the Iranian national immunization program.

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  • The study assessed the expression of toxin genes (A and B) in diarrhea samples from patients in Hamadan hospitals using Real-Time PCR.
  • A total of 130 samples were collected, with 12.3% testing positive for these toxins; gene A showed significantly higher expression than gene B.
  • Findings revealed diverse genetic profiles among the isolates, indicating that multiple clones with varying toxin expressions are circulating in the hospitals.
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Purpose: This study aimed to assess the radiomic features of computed tomography (CT) and magnetic resonance imaging (MRI) of the bladder wall before radiotherapy using machine learning (ML) methods to predict bladder radiotoxicity in patients with prostate cancer.

Methods: This study enrolled 70 patients with pathologically confirmed prostate cancer who were candidates for radiation therapy (RT). CT and MRI of the bladder wall before radiotherapy were used to extract radiomic features.

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Purpose: Anaplastic thyroid carcinoma (ATC) is a highly aggressive and lethal thyroid cancer subtype with a poor prognosis. Recent advancements in machine learning (ML) have the potential to improve survival predictions. This study aimed to develop and validate ML models using the SEER database to predict 3-month, 6-month, and 12-month (overall survival) OS in ATC patients.

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  • Researchers studied strokes from 1990 to 2021 to understand how many people get them and how they are affected around the world.
  • In 2021, strokes caused about 7.3 million deaths and were a major cause of health problems, especially in specific regions like Southeast Asia and Oceania.
  • There are differences in stroke risks based on where people live and their age, and some areas actually saw more strokes happening since 2015.
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Background: The current study aimed to evaluate the prognostic value of serum amyloid A protein)SAA(protein as a biomarker in diagnosing 2019 novel coronavirus disease)COVID-19(infection.

Methods: The study was conducted on 123 patients with definitive COVID-19 infection referred to Shahid Beheshti and Sina hospitals in Hamedan province, Iran. Five-milliliter blood samples were taken from all included patients and serum was isolated using a centrifuge at 10,000 rpm for 10 min.

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Impacts of graphene oxide contamination on a food web: Threats to somatic and reproductive health of organisms.

Ecotoxicol Environ Saf

October 2024

Dental Implant Research Center, Avicenna Health Research Institute, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address:

Contamination of aquatic food webs with nanomaterials poses a significant ecological and human health challenge. Ingestion of nanomaterials alongside food disrupts digestion and impairs physiological processes, with potential consequences for organism fitness and survival. Complex interactions between nanomaterials and biota further exacerbate the issue, influencing life-history strategies and ecosystem dynamics.

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Introduction: Wound healing is a major therapeutic concern in regenerative medicine. The current study aimed to investigate the second-degree burn wound treatment in rats using rat adipose- derived stem cells (ADSCs) and manganese nanoparticles (MnO-NPs) in a polycaprolactone/gelatin electrospun nanofiber scaffold.

Methods: After the synthesis of nanoparticles and electrospinning of nanofibers, the SEM analysis, contact angle, mechanical strength, blood compatibility, porosity, swelling, biodegradability, cell viability, and adhesion assays were performed.

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Homeostatic changes of trace elements in diazinon toxicity in rat model: The beneficial role of resveratrol.

Toxicol Rep

December 2024

Nutrition Health Research Center, Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.

Background And Objectives: Diazinon (DZN) is a cholinesterase inhibitor widely used to relieve agricultural pests and upgrade the productivity of crops. Resveratrol (Res), as a phenolic plant compound, has a protective role against free radicals. This study intended to evaluate the impacts of Res on homeostatic disturbances induced by DZN in rats.

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