924 results match your criteria: "Digestive Disease Research Institute[Affiliation]"

Background: Inflammatory bowel disease (IBD) consists of two main types: Crohn's disease (CD) and ulcerative colitis (UC). The epidemiology of IBD patients has not been comprehensively studied in EMRO countries; therefore, we conducted this meta-analysis to study the epidemiology of this disease in these countries.

Methods: We searched four international databases, namely Scopus, Web of Knowledge (ISI), Medline/PubMed, and ProQuest, from inception up to the end of May 2023.

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Article Synopsis
  • Cardiovascular diseases (CVDs) are the top causes of death and disability globally, with metabolic risk factors significantly impacting mortality rates, especially in Iran.
  • The study analyzed 8,621 middle-aged and older participants to assess the relationship between metabolic risk factors and CVD deaths, using the Cox proportional hazards model to calculate hazard ratios and population attributable fractions (PAFs).
  • Findings revealed that 50% of CVD deaths were linked to metabolic factors like high waist circumference and high fasting blood sugar, with females showing a higher risk than males, highlighting the need for tailored approaches to CVD risk assessment in different populations.
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Dietary folate intake has been identified as a potentially modifiable factor of gastric cancer (GC) risk, although the evidence is still inconsistent. We evaluate the association between dietary folate intake and the risk of GC as well as the potential modification effect of alcohol consumption. We pooled data for 2829 histologically confirmed GC cases and 8141 controls from 11 case-control studies from the international Stomach Cancer Pooling Consortium.

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Background: In a previous study, we found that the expression of microRNA 429 (MIR429) was decreased in dextran sodium sulfate (DSS)-induced mouse colitis tissues.

Objective: In this study, we aimed to investigate the interaction of MIR429 with TIMP metallopeptidase inhibitor 2 (TIMP2), one of its candidate target genes, in human colorectal cancer (CRC) cells and DSS-induced mouse colitis tissues.

Methods: A luciferase reporter system was used to confirm the effect of MIR429 on TIMP2 expression.

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  • The study examined the relationship between bile reflux (BR) and the composition of microorganisms in gastric juice, involving 50 subjects with various gastric issues.
  • Findings showed that different levels of bile acids in gastric juice correlated with changes in microbial diversity, particularly in groups with more severe BR.
  • Higher BR levels negatively impacted microbial diversity, and specific bacterial genera were linked to bile acid levels, indicating that BR should be factored into research on gastric microbiomes.
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  • Inflammatory bowel disease (IBD) includes ulcerative colitis and Crohn's disease and can affect various organs, not just the gastrointestinal tract.
  • A systematic review of studies from Eastern Mediterranean countries found that arthritis and arthralgia are common extra-intestinal manifestations of IBD, with prevalence rates of 7.1% for arthritis in ulcerative colitis and 13.5% in Crohn's disease.
  • Other significant manifestations include skin issues (9.9%), ocular involvement (7.2%), and primary sclerosing cholangitis (PSC), with prevalence rates of 3.5% for ulcerative colitis and 2.7% for Crohn's disease, highlighting the importance of recognizing
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Human cytomegalovirus (HCMV) is classified within the order and is prevalent in 50%‒80% of the general population. Most carriers experience this infection without noticeable clinical symptoms. HCMV causes a lifelong latent infection that can be reactivated due to immune disorders and inflammation.

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Background/aim: The aging population has been growing gradually; therefore, the proportion of elderly patients undergoing colorectal endoscopic submucosal dissection (ESD) has also been increasing. However, there is a lack of large-scale studies on the efficacy and safety of colorectal ESD in elderly patients.

Patients And Methods: This retrospective analysis evaluated colorectal ESDs performed at five tertiary medical institutions between January 2015 and December 2020.

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Purpose: Gastric cancer (GC) is among the leading causes of cancer mortality worldwide. The objective of this study was to investigate the association between dietary fiber intake and GC.

Methods: We pooled data from 11 population or hospital-based case-control studies included in the Stomach Cancer Pooling (StoP) Project, for a total of 4865 histologically confirmed cases and 10,626 controls.

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  • Gastric cancer is a significant health issue globally, and this study investigates the prevalence of Epstein-Barr virus (EBV) in various gastric cancer cases across different regions in Iran.
  • Out of 682 gastric cancer samples analyzed, only 2.1% were found to be positive for EBV RNA, with a notable difference in frequency between medullary (36.4%) and non-medullary types (0.9%), indicating a possible link between EBV and specific cancer subtypes.
  • The low prevalence of EBV-associated gastric adenocarcinoma in Iran could be influenced by regional differences in risk factors, the limited occurrence of specific cancer types, or limitations inherent in the tissue microarray method used in
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Background: Data on the epidemiology of inflammatory bowel disease (IBD) in the Middle East are scarce. We aimed to describe the clinical phenotype, disease course, and medication usage of IBD cases from Iran in the Middle East.

Methods: We conducted a cross-sectional study of registered IBD patients in the Iranian Registry of Crohn's and Colitis (IRCC) from 2017 until 2022.

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Background: Cancer immunotherapy has emerged as a transformative approach for treating various malignancies, including melanoma, lung cancer, breast cancer, and leukemia. Animal models have been instrumental in elucidating the mechanisms and potential of these therapies. However, graft-versus-host disease (GVHD) is an inherent challenge in these studies, primarily because the introduction of foreign immune cells or tissues often triggers immune responses.

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Background: Evidence on the potential association between dietary copper intake and gastric cancer (GC) is lacking. Thus, we aimed to evaluate this association within the Stomach cancer Pooling (StoP) Project-an international consortium of epidemiological studies on GC.

Methods: Data from five case-control studies within the StoP Project were included (2448 cases, 4350 controls).

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Colorectal endoscopic submucosal dissection (ESD) is a promising but challenging procedure. It is not widely performed due to its technical difficulty. We aimed to find the predictive factors associated with technical difficulty in colorectal ESD before the procedure.

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Article Synopsis
  • A study was conducted using data from 968,738 adults across 20 cohort studies in Asia to investigate the link between diabetes and liver cancer incidence and mortality.
  • The findings revealed that adults with diabetes had a significantly higher risk of being diagnosed with liver cancer (hazard ratio of 1.97) and dying from it (adjusted hazard ratio of 1.97) compared to those without diabetes.
  • The robust results, supported by a two-stage meta-analysis, contribute valuable evidence to the understanding of liver cancer risks among diabetic populations in Asian countries.
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Background: The activation of oxidative stress and inflammatory conditions has been associated with acceleration in diabetes (DM) onset and complications. Despite various anti-DM medications, there is a growing trend to discover inexpensive and effective treatments with low adverse effects from plants as one of the promising sources for drug development.

Objective: This study aimed to systematically investigate the simultaneous anti-inflammatory and antioxidant effects of plant-derived hypoglycemic medicines in diabetic experimental models.

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Opium Effects on Pancreatobiliary System in Opium Abusers Evaluated by Endoscopic Ultrasonography.

Middle East J Dig Dis

October 2023

Liver and Pancreaticobiliary Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran.

Opium use is a significant social and public health issue. There are numerous effects of opium documented as affecting the pancreatobiliary system. The aim of the study was to assess the pancreatobiliary changes in patients with opium addiction by endoscopic ultrasonography (EUS).

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Background: Ulcerative colitis (UC) is a chronic inflammatory bowel disease caused by numerous factors, such as immune system dysfunction and genetic factors. MicroRNAs (miRNAs) play a crucial role in UC pathogenesis, particularly via the JAK-STAT pathway. Our aim was to investigate the association between miRNA-101 and JAK2-STAT3 signaling pathway with inflammatory cytokines in UC patients.

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Objective: It is believed that gut microbiota alteration leads to both intestinal and non-intestinal diseases in children. Since infants inherit maternal microbiota during pregnancy and lactation, recent studies suggest that changes in maternal microbiota can cause immune disorders as well. This systematic review was designed to assess the association between the child and mother's gut microbiome and allergy development in childhood.

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Background: Nineteen non-antibacterials were examined to show that their consumption for treatment of other diseases may inhibit . Four antibiotics were used for comparison.

Materials And Methods: Agar dilution method was used to examine the susceptibility of 20  isolates to 4 antibiotics; metronidazole (MTZ), clarithromycin (CLR), amoxicillin (AMX), tetracycline (TET) and 19 non-antibacterials; proton pump inhibitors (PPIs), H-blockers, bismuth subsalicylate (BSS), antifungals, statins, acetaminophen (ACE), aspirin (ASA), B-vitamins (B-Vits; Vit B1, Vit B6 and Vit B and vitamin C (Vit C).

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Background: We compared the efficacy, tolerability, and safety of oral sulfate tablets (OST, which contains simethicone) and 2 L-polyethylene glycol/ascorbate (2 L-PEG/Asc) with a split-dosing regimen in older individuals aged ≥ 70 years who underwent scheduled colonoscopy.

Methods: This prospective, randomized, investigator-blinded, multicenter study was conducted between June 2022 and October 2023. Participants aged ≥ 70 years were randomized at a ratio of 1:1 to the OST or 2 L-PEG/Asc groups.

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Background: Previous studies suggest that dietary vitamin C is inversely associated with gastric cancer (GC), but most of them did not consider intake of fruit and vegetables. Thus, we aimed to evaluate this association within the Stomach cancer Pooling (StoP) Project, a consortium of epidemiological studies on GC.

Methods: Fourteen case-control studies were included in the analysis (5362 cases, 11,497 controls).

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Background And Aims: Metabolic dysfunction-associated steatotic liver disease (MASLD) is a global metabolic problem which can lead to irreversible liver fibrosis. It has been shown that vitamin D and its receptors contribute to fibrogenic pathways in the liver. However, the effect of vitamin D supplementation on liver fibrosis related factors have not been examined.

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Dietary acid load and cirrhosis-related mortality: a prospective cohort study.

Sci Rep

February 2024

Department of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, West Arghavan St. Farahzadi Blvd., Sharake Qods, Tehran, Iran.

As a global health concern, cirrhosis contributes significantly to morbidity and mortality. This prospective cohort study aimed to investigate the association between dietary acid load (DAL) and cirrhosis-related mortality. Present study was conducted on 121 patients with newly diagnosed cirrhosis who were followed up for 48 months.

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Background: Previous studies have mainly focused on individual mental disorders, and there is no study addressing the total burden of mental disorders in the Middle East and North Africa (MENA).

Aims: To evaluate the burden of mental disorders in the MENA region from 1990 to 2019.

Study Design: A cross-sectional study.

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