جستجوی مقالات مرتبط با کلیدواژه "human" در نشریات گروه "پزشکی"

Mitochondrial function is an integral part of glucose-stimulated insulin secretion in pancreatic β-cells and is a hallmark feature of cardiovascular disease. It may contribute to the pathophysiology of diabetic cardiomyopathy and atherosclerosis. This study aimed to investigate the effect of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT), combined with quercetin supplementation (eight weeks), on mitochondrial gene expression in the diabetic heart.

In this study, 35 adult male rats were equally divided into seven groups (n=5): healthy sedentary, diabetic sedentary, diabetic quercetin sedentary, diabetic HIIT (DHIIT), diabetic MICT (DMICT), DHIIT with quercetin, and DMICT with quercetin. The rats were fed a high-fat diet for eight weeks and subsequently treated with a single low dose of streptozotocin to create a model of type 2 diabetes mellitus (T2DM). Eight weeks (five times a week) of HIIT and MICT, with and without quercetin, were conducted for the training groups, and quercetin was injected over eight weeks at a dose of 15 mg/kg.

Eight weeks of quercetin supplementation, HIIT, and MICT, with and without quercetin, significantly decreased blood glucose levels (P=0.001). Eight weeks of HIIT and MICT training increased nuclear respiratory factor-2 (NRF2) (P=0.001) and adipose triglyceride lipase (ATGL) (P=0.001) expression and decreased perilipin 2 (PLIN2) gene expression (P=0.001).

The training groups alone improved the gene expression of NRF2, ATGL, and PLIN2. Both training protocols, combined with quercetin, controlled blood glucose levels and improved antioxidant capacity. Thus, the reduction in blood glucose through quercetin supplementation appears to be a promising approach for managing T2DM.

 Levels of the human epidermal growth factor receptor 2 (HER2) gene are low in normal breast tissue, but half of patients with breast cancer have higher levels of this receptor. The different expression levels of the HER2 gene in normal and malignant cells make this gene an excellent biomarker for therapeutic purposes. In this study, we evaluated the degree of HER2 overexpression in patients, its relationship with age and the occurrence of metastases.

In this retrospective, registry-based and two-center cohort study, information of 1500 patients with breast cancer recruited at the Shahid Mostafa Khomeini hospital in Ilam province was collected during the years 2020 to 2023.

The possible of metastasis in cancer patients who had the HER2 gene expression was 3 times higher (adjusted OR: 2.82; 95% CI: 1.79 – 3.29; P=0.001).  Also, Nodes involved (adjusted OR: 2.01; 95% CI: 0.87 – 3.79; P=0.03) was significantly associated with increased metastasis.

This study showed that the significant prognostic factor of the number of involved lymph nodes and HER2 gene expression is known as a factor that increases the risk of metastasis. Therefore, creating a background for breast cancer screenings can be an important factor for the treatment of the disease and the prevention of metastasis in breast cancer patients.

Osteoarthritis (OA) is among the most prevalent articular disorders, whose incidence is directly related to aging. Due to the antiinflammatory potential of curcumin as the active component of turmeric, the present study evaluated the effects of curcumin on the expression of genes related to T helper 17 (Th17), including forkhead box p3 (FOXP3), forkhead box o1 (FOXO1), transforming growth factor-β (TGFB1) and microRNA-873, human (HSA-MIR-873), in OA patients.
Female patients with knee OA (n=30) were randomly categorized into 2 groups, including the intervention group who received curcumin (n=15) and the placebo (n=15) in a double-blind clinical trial for 3 months. The expression of FOXO1, FOXP3, TGFB1, and HSA-MIR-873 genes was evaluated by SYBR Green real-time reverse transcription polymerase chain reaction.
In the curcumin group, FOXO1 gene expression was significantly increased, while the increase in FOXP3 gene expression was not significant. Moreover, the expression level of the HSA-MIR-873 gene showed a significant increase in the curcumin group.
The modulatory effects of curcumin on Th17 function might be associated with the expression of FOXO1 and HSA-MIR-873 genes.

 Atopic dermatitis is a common inflammatory skin disease which is treated with narrowband ultraviolet B (NB-UVB). Exploring the critical targeted genes in patients by UV radiation is the main aim of this study.

 Gene expression profiles of lesional and non-lesional skin samples of atopic dermatitis patients after treatment with NB-UVB and the non-irradiated samples were extracted from the Gene Expression Omnibus (GEO) database and analyzed via protein-protein interaction (PPI) network analysis to find the critical targeted genes.

 A total of 357 significant differentially expressed genes (DEGs) were included in the PPI network. CTNNB1, SRSF1, YWHAB, SMC3, GNB2, ARF3, UBL7, RAB2A, YWHAE, EIF5B, SNRPE, PPIG, RC3H2, CFL1, SMARCB1. LAPTM5, PRPF40A, and RBBP4 were introduced as hub bottlenecks.

 In conclusion, five central genes including SMC3, ARF3, EIF5B, SMARCB1, and LAPTM5 were highlighted as critical genes in response to NB-UVB radiation in the skin of the treated atopic dermatitis patients. The introduced crucial genes are involved in essential cellular functions such as apoptosis, cell cycle, cell proliferation, and inflammation. It seems that applied NB-UVB radiation is a suitable therapeutic method for atopic dermatitis disease.

Chromogenic insitu hybridization (CISH) and immunohistochemistry analysis for p57 are ancillary studies discriminating partial hydatidiform mole (PHM), complete hydatidiform mole (CHM), and non-molar hydropic abortion (HA).

It aimed to study CISH with a probe to chromosome 17 (CISH17) and chromosome 2 (CISH2) discriminating chromosomal ploidy of PHM, CHM, and HA; in addition, their surrogacy value in the evaluation of triploid and diploid in product of conception specimens (POCs) was evaluated.

44 statistically significant POCs were selected retrospectively. The Kappa agreement coefficients, sensitivity, specificity, and accuracy with 95% confidence interval (95% CI) were reported.

PHM, CHM, and HA were diagnosed to be 23, 17, and 3 cases based on both CISH2 and CISH17 resulting in their complete discrimination between PHM and HA (23 vs. 3). The Kappa agreement coefficient was 95.4% (p < 0.001) when diagnosing the PHM (23), CHM (20), and HA (1). In addition, the accuracy, sensitivity, and specificity were 95.26% (95% CI: 84.25-99.38), 100% (95% CI: 85.18-100), and 95% (95% CI: 76.18-99.88), respectively. The power analysis on CISH2 and CISH17 tests discriminating between triploid and diploid in POCs was estimated to be 100%.

Based on the current finding, CISH2 and CISH17 enjoyed perfect agreement in diagnosing chromosomal ploidy; in addition, their absolute power discriminating between triploid and diploid revealed that they could be used as surrogate markers for ploidy. Prospective studies on fresh specimens are suggested comparing the CISH method's accuracy with flow cytometry karyotyping and fluorescence in situ hybridization.

Rutin is a lipophilic natural flavonoid. It is found in vegetables, citrus fruits, and beverages. This study aims to evaluate rutin metabolic pathways in human senescent stromal cells. Data are extracted from the Gene Expression Omnibus (GEO) database and pre-evaluated via GEO2R to find the significant differentially expressed genes (DEGs). The significant DEGs were assessed via protein-protein interaction PPI network analysis to explore the hub genes. The hubs were screened via directed PPI to find the critical DEGs. Data were assessed via volcano plot, Uniform Manifold Approximation and Projection (UMAP) plot, and Venn diagram. A total number of 9124 significant DEGs were analyzed to determine 33 upregulated and 61 downregulated hubs. The identified hubs were investigated via directed PPI and Il1B. ICAM1, CCL2, EGF, CXCL8, PTGS2, CAMK2B, CCN2, VCAM1, ELN, CXCL12, BGN, and TLR4 were pointed out as critical hub genes. Il1B, CCL2, GNAO1, ICAM1, EGF, and CXCL8 appeared as controller genes affected by rutin while PTGS2 and CAMK2B were the most controlled individuals. The finding refers to the significant advantages of the rutin effect on the function of treated cells. These advantages are corresponded to the usefulness of rutin as an herbal drug candidate. However, more investigations are required to decrease its side effects.

Air pollution indexes are used to indicate the level, quantity, and quality of air pollution. The air quality index (AQI) and air quality health index (AQHI) have been developed to report their association with human health.

Air quality variables (PM2.5, O3, and NOx) per hour were obtained for March 2021 to March 2022 from three central pollution control centers in Ahvaz, the capital city of Khuzestan province, southwest of Iran. R3-3-4, Minitab-17, and SPSS-19 software were used to analyze the obtained data.

In this study, AQHI and AQI were predicted with actual data, forecasting the air quality with two confidence interval percentages of 95 and 80 illustrated for future days. Also, the relationship between AQI and AQHI was determined; hence, this relationship is important for some cities for which the AQHI index is not measurable. AQHI can be determined for each place using AQI values and the obtained relationship.

The result indicated that we could also forecast the AQI and AQHI for future days and obtain a new equation for AQHI due to AQI values.

Brucellosis, as a zoonotic disease, is widespread among humans and animal andcontinues to be a major public health problem. The present study aimed to analyze the trends and epidemiological characteristics of human brucellosis in Ain Témouchent (Western Algeria). In this registry-based longitudinal study, data on the reported new cases of brucellosis for five years (2014 to 2019) were obtained from the provincial notifiable diseases surveillance system of Ain Temouchent. Using official population data, we calculated the incidence rate per 100,000 inhabitants. From 2014 to 2019, 599 cases of brucellosis cases were notified in Ain Temouchent province (mean annual incidence: 26.37 cases/100,000 inhabitants). The yearly notification peaked in 2014 (n=170 cases). The highest incidence was reported for males (56%) compared to females (44%) with a sex ratio of 1.29. Regarding age, the highest incidence of notified cases for brucellosis was in the group aged 25-44 years and over, accounting for 37,73% of all notified cases. The lowest incidence was found in the age group between 0-14 years with 11.52%. The disease peaked in May with 139 cases. The geographical distribution indicated that the highest risk area of human brucellosis was Hammam Bou Hadjar and Ain Larabaa region. Our findings showed a high prevalence of human brucellosis in Ain Témouchent, with gender, age, and seasonal changes as the main risk factors for human brucellosis.

Lactobacillus plantarum is a type of gram-positive lactic acid bacteria. This bacterium is considered a safe probiotic and, many applications and benefits including prolonging food shelf-life, enhancing antioxidant activity, improving food flavor characteristics and antimicrobial activities in the food industry, and application as a potential starter for dairy products have been attributed to it. Various studies have also emphasized its health-giving properties. As a result, the features and wide application of this bacterium, as well as the safety of L. plantarum and its strains, have made it a popular probiotic in the food and medical industries. Thus, in the present study keywords including L. plantarum and Lactiplantibacillus plantarum along with application, benefits, food, health, anti-oxidant, anti-diabetic, anti-obesity, anti-inflammatory, antiviral, and anti-depression were searched in databases of PubMed, Scopus, Web of Science, Sience direct and Google Scholar with no time restriction. Then, important features, benefits, and uses of L. plantarum were categorized and discussed. The ability of L. plantarum on the food such as prolonging food shelf-life, enhancing antioxidant activity, improving food flavor characteristics and antimicrobial activities in the food industry, and as a potential starter for dairy products is effective. In addition, several studies have emphasized of L. plantarum health-giving properties.

The use of complementary medicine in healthcare is increasing rapidly. Therefore, the aim of the current study was to investigate the effect of eight weeks of high-intensity interval training and moderate-intensity continuous training with quercetin supplementation on the gene expression of FOXO1 and ATG5 in the liver of diabetic obese rats.

In this experimental study, 42 male Wistar rats were considered research samples at eight weeks. Rats were induced with diabetes after eight weeks of a high-fat diet and familiarization with a laboratory environment and treadmill. Rats were divided into seven groups, and six rats were placed in each group (n=6): healthy control group, diabetes control group, diabetic quercetin group, high-intensity interval training with diabetes group, moderate-intensity continuous training with diabetes group, diabetic high-intensity interval training with quercetin group, and diabetic moderate-intensity continuous training with quercetin group. For one training group, eight weeks of high-intensity interval training, and for the other group, eight weeks of moderate-intensity continuous training on the treadmill were performed. Seventy-two hours after the last training session, liver tissues were isolated to check the gene expression of FOXO1 and ATG5. One-way analysis of variance test was used to check the difference between groups by SPSS version 26 software.

Findings showed that by inducing type 2 diabetes, gene expression of FOXO1 increased (3.14 unit) (P<0.001) and ATG5 gene expression decreased (0.71 unit) (P<0.001). After eight weeks of training investigation, gene expression of FOXO1 and ATG5 decreased (P<0.001) and increased (P<0.001), respectively, in all training groups compared to the diabetic control group. There was no significant difference between the four training groups (P>0/05).

Both exercises with and without quercetin had a modulating effect on the gene expression of indicators related to the process of autophagy and blood glucose levels in the liver of diabetic obese rats.

Strongyloides stercoralis is one of the soil-transmitted helminths (STH) in tropical and subtropical regions. The role of lipid profile has been investigated in the survival of larval stages of helminths, but there is limited information about the role of lipid profiles and strongyloidiasis. Hence, we aimed to investigate the seroprevalence of S. stercoralis infection in patients with hyperlipidemia is compared with the nonhyperlipidemia.

In 2023, participants were selected from the laboratory of Porsina Hospital in Guilan Province, northern Iran and their lipid profiles including TG, CHOL, LDL, HDL, and VLDL were measured. They were divided into two groups of case and control and matched based on sex and age. S. stercoralis Ab (IgG) was measured by ELISA methods, using the NovaTec kit. Finally, statistical analysis was performed.

Each case and control group consisted of 105 participants, from 13 to 80 years old. 56.66% were female and 43.33% were male. The sero-prevalence of S. stercoralis was found 4.76% in the case group compared to 0.95% in the control group. We found an association between TG fall and VLDL with sero-prevalence of S. stercoralis in hyperlipidemia group (P= 0.034), but other lipid profiles did not show a significant association. A significant relationship was found between contact with dogs and seroprevalence of S. stercoralis (P=0.001).

The sero-prevalence of S. stercoralis in the case group was 5 times higher than the control group. A significant association between TG and VLDL fall with S. stercoralis Ab (IgG) was observed, but future studies with more sample sizes are suggested to investigate the anti-atherogenic effect of S. stercoralis. Also, a genetic assessment of S. stercoralis and the host (humane and dogs) is recommended to research zoonotic potential in epidemic areas.

Escherichia coli O157: H7 is one of the most important causes of hemorrhagic colitis, and hemolytic uremic syndrome. The present study aimed to isolate E. coli O157: H7 from foods and patients with hemorrhagic colitis, and identify Shiga toxin genes, phylogenetic comparison, and antibiotic resistance of the isolates.

In total 400 samples, including patients stool and food were taken in Isfahan-Iran province. Pheno- typic tests and PCR were performed to identify Shiga toxin-producing E. coli. The isolated strains were compared phyloge- netically by PFGE. Agar disk diffusion was performed to identify the antibiotic resistance of the isolates.

Totally, 5 isolates of fecal samples were E. coli O157, but only 2 isolates carried H7 gene. Also, 9 isolates of E. coli O157 were isolated from food samples that 3 isolates were E. coli O157: H7. The isolates carried stx1, stx2, hlyA and eaeA genes. Also, E. coli non-O157: H7 identified from samples that contained stx1, stx2, hlyA genes. The highest susceptibility to imipenem and the highest resistance to ampicillin and ciprofloxacin were observed. There was a similarity of 100% between the E. coli O157: H7 strains isolated from patients and raw milk and minced beef samples.

Serotypes other than the O157 of E. coli are more prevalent in patients and food. The E. coli O157: H7 isolates from patients had 100% genetic similarity with minced meat and cow milk isolates, which indicates cattle are the most im- portant reservoir of this bacterium in Iran.

Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) is a complex and potentially fatal hypersensitivity condition. We present a unique case report and literature review focusing on DRESS syndrome-associated myocarditis resulting from reactivated viral infections in a 21-year-old female. 3 weeks after 5-day oral co-trimoxazole consumption due to acne, she developed symptoms consistent with DRESS syndrome, including a generalized maculopapular rash. Despite prednisolone treatment, the patient developed fatal fulminant myocarditis linked to HHV-6 and CMV reactivation. The patient's death highlights the importance of early recognition and careful management of DRESS syndrome, especially considering the potential viral reactivation that can lead to severe complications. Postmortem investigations revealed that viral reactivation caused myocarditis. Careful consideration must be given to corticosteroid usage in DRESS treatment, as inappropriate prescribing may promote viral reactivation and subsequent complications. While high-dose corticosteroids initiated within the first week effectively suppress HHV-6 reactivation. Conversely, low-dose or late-start high-dose corticosteroids prove ineffective in preventing HHV-6 viremia. Late- onset or low- dose corticosteroids may lead to fatal complications following the primary viral reactivation.

The aim of the current research was to assess the clinical manifestations and diagnostic methods used in juvenile cases of Autoimmune Hepatitis (AIH).

This study employed a retrospective cross-sectional design to investigate pediatric patients diagnosed with AIH at Children’s Medical Center Hospital, which is affiliated to Tehran University of Medical Sciences (TUMS), Tehran, Iran. The study included patients who received routine examinations, treatments, and follow-ups during the period from 2018 to 2021. 

The present investigation encompassed the evaluation of 52 pediatric patients, mostly female, with a mean age of 7.76 years. The vast majority of patients have encountered the occurrence of acute AIH. Positive findings for the Anti-Smooth Muscle Antibodies (ASMA) test were seen in 50% of the patients. The mean score for fibrosis in the observed individuals was 2.56, whereas the mean value for the Hepatitis Activity Index (HAI) in a subset of 29 patients was found to be 7.34. One patient succumbed to the condition, one case underwent transplantation, and another individual was identified as a candidate for liver transplantation.

Patients with AIH saw a decrease in long-term survival. There was no observed disparity in prognosis based on gender; nevertheless, it was noted that males had a shorter lifespan, perhaps attributable to an earlier beginning of the illness. The presence of cirrhosis at the time of diagnosis constituted a significant risk factor for unfavorable prognosis, as it was associated with an elevated overall risk of mortality owing to liver dysfunction.

Hereditary hemochromatosis (HH) is an inherited autosomal recessive iron metabolism disorder resulting from a C282Y mutation in the HFE gene. Mutations in the HFE gene may result in iron accumulation and oxidative stress in the retina, resulting in macular degeneration. This article describes two patients with HH who were treated with erythrocytapheresis or phlebotomy, with no exposure to deferoxamine or any other chelation therapy, and who developed visual symptoms.

Both patients had known diagnoses of HH. Because of visual symptoms, they were referred to the ophthalmology clinic and underwent a retinal exam, multimodal imaging, and electrodiagnostic studies, which revealed structural and functional degeneration of the central macula. Fundus photography, fluorescein angiography, and fundus autofluorescence revealed changes at the level of the retinal pigment epithelium (RPE) in the central macula. In addition, optical coherence tomography revealed subfoveal accumulation of hyperreflective material at and below the RPE. Multifocal electroretinography confirmed a decreased cone response, whereas the full-field electroretinogram was unremarkable. Genetic testing ruled out Best’s vitelliform macular dystrophy and the other known hereditary macular dystrophies. The patients had known diagnoses of HH, homozygous C282Y mutations in the HFE gene, and no comorbidities; thus, we presumed that HH led to the observed morphological and functional disorders of the RPE, which in turn caused structural macular changes in both patients.

Considering the macular findings and the nature of the patients’ primary illness, we believe that the accumulation of iron and photoreceptor metabolic products caused dysfunction in the RPE, which led to morphological and functional changes in the macula. Because the patients were not treated using chelating agents, we attribute the macular changes solely to iron accumulation and oxidative stress caused by the pathophysiological processes of HH. Further studies are needed to identify the plausible molecular or cellular insults underlying pseudovitelliform macular degeneration in patients with HH.

The emergence of the novel human coronavirus (SARS-CoV-2) has been one of the most overwhelming human challenges of recent decades. Despite global efforts to stop or slow down the spread of the disease, it has infected millions of people across the world within a short period of time. Research on human coronaviruses has not been received adequate attention and there is currently no specific treatment or vaccine available for coronaviruses in humans. Interestingly, evolution, pathogenesis, and immunogenicity of coronaviruses in livestock and poultry have been described for many years and they are controlled by mass vaccination programs. Moreover, elevating immune responses to coronaviruses, a major hurdle in virulent human-coronaviruses, has been studied by several investigators in cat populations. Indeed, cross-species transmission and tropism of animal coronaviruses have been investigated by several research groups. It is estimated that three out of every four new emerging infectious diseases are zoonotic. Preliminary reports indicate that like other human coronaviruses, SARS-CoV-2 has been transmitted from bats to humans by an intermediate animal host. Hence, interdisciplinary collaborations among veterinary and medical researchers and clinicians, biologists, and environmental scientists are essential for identifying the possible animal reservoir of the viruses in general and discovering the evolutionary pathway of SARS-CoV-2 in particular. This can also result in the designing of effective prevention and control measures against SARS-CoV-2. In this review, advances in the understanding of different features of animal coronaviruses that can facilitate effective measures in dealing with the SARS-CoV-2 pandemic have been discussed.

Actinrelated protein 2/3 complex subunit 1B (ARPC1B) deficiency is an inborn error of immunity (IEI) characterized by a combination of immunodeficiency and immune dysregulation and classified as an IEI with allergic manifestations. Here, we describe two patients with pathogenic variants in the ARPC1B gene. The first patient presented with eczema and bronchospasm at six months of age. The second patient presented with eczema and milk protein allergy at five months of age. The c.899_944 (p.Glu300Glyfs*7) pathogenic variant was previously described, whereas the c.863del (p.Pro288Leufs*9) variant was novel. ARPC1B deficiency should be considered because of the severe allergic manifestations at an early age.