Articles tagged with Gastroenterology
Researchers investigated the mechanisms behind reduced gastric mucosal blood flow caused by H. pylori extracts, finding a nerve- and iNOS-mediated pathway involved. The study revealed that H. pylori extracts decrease gastric mucosal blood flow by approximately 30% in mice.
Research in Costa Rica found that H. pylori infection, particularly the status of cagA and vacA genotype distribution, plays a major role in gastric cancer incidence rate variability. Gastric atrophy and intestinal metaplasia were more common in patients with high GCIR.
A study found that antioxidant supplementation reduced painful days and analgesic use in patients with chronic pancreatitis. The benefits were seen as early as three months and suggest a state of heightened free radical-mediated injury in the disease.
Research on Scutellaria barbata extract reveals growth inhibitory effects on human cancers, including lung, breast, and digestive system cancer. The extract induces apoptosis in hepatoma cells through the mitochondrial pathway, suggesting a potential therapeutic approach.
A systematic review and meta-analysis found that bismuth compounds were associated with a low risk of adverse events, with the exception of dark stools, which has little clinical significance. The study suggests that bismuth-containing regimens may be a safe alternative to PPI-based triple therapies for H. pylori eradication.
Research team investigates Campylobacter jejuni pathogenesis, finding two distinct patterns of interaction with epithelial cells. Strains that invade epithelial cells destroy them, while those that don't affect barrier properties or increase mediator production.
A new quantitative analysis method uses computerized measurements to evaluate liver biopsy samples, providing accurate assessments of fibrosis and inflammation. The Metriser technology offers a faster and more objective alternative to traditional scoring systems.
Research found a high prevalence of gluten-sensitive enteropathy (GSE) in patients with iron deficiency anemia of unknown origin. A gluten-free diet improved anemia in GSE patients with mild duodenal lesions, suggesting GSE as a potential cause of iron-deficient anemia.
A new screening test using barium meal follow through with pneumocolon has been proposed for chronic abdominal pain of luminal origin. The test can detect both small and large bowel lesions, reducing the need for separate colonoscopy procedures.
A recent study published in the World Journal of Gastroenterology investigated the gastrointestinal side effects of high-dose acetaminophen and NSAIDs. The research found that gastric lesions were similar between groups, indicating that acetaminophen is not entirely free of gastrointestinal side effects at high doses.
Chronic gastrointestinal symptoms such as GERD, uninvestigated dyspepsia, and IBS are common in the Korean population. These conditions significantly impair quality of life, particularly in females, the elderly, and those with lower economic classes.
Researchers found that fractionated radiation induced an immune imbalance, characterized by elevated expression of pro-inflammatory cytokines, in the distal colonic mucosa. This imbalance persisted even after the end of radiotherapy, with a Th2 profile dominating the immune response.
A new computer-aided screening technique has been developed to diagnose enteric lesions in capsule endoscopy, reducing the reading time from 5 hours to 1 hour on average. The technique uses image processing to screen out normal images, allowing for accurate diagnosis with high sensitivity rates.
Researchers found that extensive liver resection impairs the regenerative capacity of the liver on a molecular and cellular level. Key findings include delayed activation of NF-kappa B and increased programmed cellular death in regenerating livers.
Researchers identified clinical characteristics of Fitz-Hugh-Curtis syndrome in 22 female patients, noting pain in the upper right abdomen and lower abdomen. Antibiotic treatment cured 20 patients, highlighting the importance of abdominal CT scans for diagnosis.
In a rat model of depression, fluoxetine inhibited mast cell ultrastructural alterations and de-regulated rMCP-1 expression. Treatment with fluoxetine suggested that SSRIs are an effective therapeutic agent for some gastroduodenal diseases caused by psychological factors.
A recent study found that bariatric surgery leads to improvement of histopathological features of nonalcoholic fatty liver disease (NAFLD) in most patients. The risk of progression of inflammatory changes and fibrosis is minimal, with complete resolution of NAFLD reported in a majority of patients.
A new study published in Gastroenterology finds that antibiotics are the single largest class of drugs causing liver injury, affecting 73% of cases. Central nervous system agents were also found to be commonly associated with drug-induced liver injury.
Research found that workers with high levels of alanine aminotransferase (ALT) and central obesity had significantly higher self-reported fatigue after work. The study suggests that objective measures such as elevated ALT and increased waist circumference are associated with work-related fatigue in apparently healthy workers.
A laparoscopic approach was used to successfully treat two cases of retrorectal cysts, a rare developmental lesion. The procedure allowed for perfect visualization of deep structures in the presacral space, minimizing surgical trauma.
A study published in the World Journal of Gastroenterology found that almost 30% of patients with CSX no longer exhibited typical chest pain after gastroenterological workup. Treatment with proton pump inhibitors significantly improved symptoms, suggesting a strong link between acid-related disorders and CSX.
Researchers found serum TGF-beta1 and s-fractalkine levels significantly increased in patients with chronic pancreatitis compared to controls. Measurement of these markers may help diagnose early-stage CP and evaluate the severity status of the disease.
A study found that ascorbic acid supplementation in diabetic rats improved myenteric neuron density by 14% and cellular area by 4.4%, suggesting moderate neuroprotection.
A rare case of adult T-cell leukemia/lymphoma (ATLL) with multiple lymphomatous polyposis is reported, highlighting the importance of endoscopic evaluation to differentiate neoplastic intestinal lesions from infectious enterocolitis. The patient presented with fever, watery diarrhea, and colonic involvement without leukemic change or v...
A study compared FibroScan with liver biopsy in patients with chronic hepatitis C, finding non-invasive methods effective for fibrosis assessment. Transient elastography outperformed traditional biopsy in differentiating significant from absent or mild fibrosis, offering an alternative to invasive procedures.
A recent study investigated the possible association between chronic pancreatitis (CP) and liver cirrhosis (LC) in alcoholic patients. The research found an inverse correlation between pancreatic and liver function tests, suggesting that these diseases evolve differently and have distinct etiopathogeny.
Research on sildenafil use in cirrhosis patients found that it does not induce profound changes in splanchnic blood flow and portal hypertension. The study suggests phosphodiesterase type-5 inhibition is not a useful therapeutic agent for alleviating portal hypertension in end-stage liver disease.
Researchers have developed a quadruple therapy regimen that shows promise in treating peptic ulcer disease, achieving an eradication rate of 68.8% in a study of 51 patients. The new treatment combines omeprazole, amoxicillin, clarithromycin, and furazolidone, with only 31.4% of patients experiencing adverse effects.
HBV infection induces increased steady state of ATR protein and phosphorylation of downstream targets including Chk1, p53, and H2AX. The level of Mre11 and p21 were reduced after HBV-positive serum addition. This suggests that HBV escapes the consequences of activation of the DNA damage checkpoint by degradation of checkpoint proteins.
A case-series study found that rectal doses of d-alpha tocopherol reduced disease severity and promoted clinical remission in patients with active ulcerative colitis. The treatment's antioxidant and anti-inflammatory effects were likely responsible for the observed benefits.
Research shows that lubiprostone and PEG 3350 can enhance mucosal barrier function in ischemic-injured intestine. Lubiprostone stimulates chloride secretion via ClC-2, recruiting tight junction proteins to the apical-lateral membrane, while PEG 3350 generates an osmotic gradient that drags electrolytes and fluid into the lumen.
A study published in the World Journal of Gastroenterology found that overall beta-catenin expression is associated with better differentiation and earlier staging in colorectal cancer. High staining density also predicted superior survival, suggesting an alternative role for beta-catenin beyond the Wnt-signaling pathway.
This study investigates the correlation between changes in CT perfusion parameters pre- and post-TACE treatment of HCC and various responses to TACE. The findings suggest that CT perfusion imaging is a feasible technique for monitoring response of HCC to TACE, indicating its potential as an adjunctive tool in clinical practice.
The biomagnetic technique assesses esophageal transit time using a non-invasive method that avoids ionizing radiation. The study found that ETT is affected by anatomical position, with faster rates in the supine position.
A study published in the World Journal of Gastroenterology found no association between ineffective esophageal motility and gastropharyngeal reflux disease. Patients with IEM had similar acid clearance times as those with normal esophageal motility, suggesting that conventional manometry may not be able to evaluate true esophageal effe...
Research published in the World Journal of Gastroenterology found that dietary glycine significantly decreased liver injury due to bile duct ligation in rats. Hepatic injury was reduced by a direct effect on hepatocytes, whereas Kupffer cells did not play a major role in cholestatic models.
Researchers investigated Kupffer cell dynamics and phagocytic activity in a rat NASH model, confirming the effectiveness of CEUS examination in diagnosing NASH. The contrast effect in the liver parenchymal phase using Levovist® strongly implicates Kupffer cells in NASH pathogenesis.
A study published in the World Journal of Gastroenterology found that berberine increases insulin sensitivity in rat islets through the modulation of HNF4 alpha expression and glucokinase activity. Berberine enhances glucose-stimulated insulin secretion in a dose-dependent manner.
Collagenous colitis is characterized by chronic watery diarrhea and abnormal collagen deposition. A rare case of collagenous colitis presenting as protein-losing enteropathy has been reported, with successful treatment with prednisolone. The condition should be included in the differential diagnosis for chronic diarrhea with hypoprotei...
Researchers successfully performed EUS-guided choledochoduodenostomy in four patients with failed ERCP, achieving rapid improvement of obstructive jaundice. In some cases, a plastic stent or naso-biliary drainage tube was used to manage complications.
A large population-based case-control study found that patients with type 2 diabetes mellitus (DM2) have a significantly increased risk of hepatocellular carcinoma (HCC), independent of cofactors. The study suggests that DM2 may be a concourse rather than merely a consequence of the liver tumor.
A study published in World Journal of Gastroenterology has identified twenty-three differentially expressed proteins between gastric cancer and normal tissues, serving as potential candidate markers. These biomarkers may aid in early diagnosis, treatment targets, and patient prognosis.
A new Eph receptor tyrosine kinase, EphA4, is overexpressed in gastric cancer and associated with depth of invasion, recurrence, and poor prognosis. The study also found that EphA4 forms a hetero receptor complex with FGFR1, potentiating FGFR-mediated downstream signal transduction.
Research reveals NOD2's importance in regulating colonic epithelial cell growth and survival, highlighting its role in maintaining the integrity of the intestinal epithelial cell barrier. This function is crucial for protection against pathogenic and opportunistic bacterial infections.
A study published in the World Journal of Gastroenterology found that patients with chronic HCV infection have a higher risk of developing idiopathic pulmonary fibrosis compared to those with HBV. The risk factors include age, liver cirrhosis, and smoking, with patients over 55 and those with liver cirrhosis showing the highest incidence.
Researchers found that H2-receptor blocking pharmacon and protease inhibitors decreased Sphincter of Oddi basal pressure. The study used choledochoscope manometry to assess the effects of various drugs on SO motility, providing insights for clinical practice.
Researchers have discovered a novel marker for colon cancer, revealing differentially expressed genes that can help identify diagnostic and therapeutic targets. The study's findings provide new insights into the progression of colon cancer and may lead to improved patient outcomes.
Stapled hemorrhoidopexy is a safe and effective procedure but can lead to life-threatening complications. Pelvic sepsis after stapled hemorrhoidopexy has a high mortality rate due to the lack of established treatment protocols, emphasizing the need for further research to identify optimal management strategies.
Research on ethanol-induced gastric mucosa injury reveals the critical role of oxidative stress in energy metabolism disturbance. Elevated ethanol exposure time increases malondialdehyde content, damaging mitochondria ultrastructure.
The AGA Institute published evidence-based guidelines for the management and treatment of suspected GERD, highlighting the need for high-quality clinical trials. The guidelines recommend various treatments, including proton pump inhibitors and antireflux surgery, to improve patient outcomes.
A study found that hypertriglyceridemia is independently associated with the severity of acute pancreatitis and leads to systemic complications. High triglyceride levels were linked to increased incidence of admission hypocalcemia, renal failure, shock, infection, and mortality in patients with severe acute pancreatitis.
Research reveals endocan protein expression is higher in normal tissues than in colorectal cancer, with positive correlation to tissue differentiation. Elevated serum levels of endocan found in late-stage lung cancer, suggesting its potential as a biomarker.
Researchers investigated etiology, diagnosis, and treatment of spontaneous colon perforation, a rare condition with high mortality rate. The study found that chronic constipation was common among patients and that surgical intervention was often necessary.
Researchers found that chronic hepatitis B patients have higher PD-1 expression on T cells, which impairs HBV-specific T cell responses. In contrast, acute exacerbation of hepatitis B patients have lower PD-1 expression and more intense HBV-specific T cell responses.
A study published in the World Journal of Gastroenterology found a significant association between laryngopharyngeal reflux (LPR) and reflux esophagitis. The research identified age, hoarseness, and hiatus hernia as factors significantly associated with LPR. Further study is needed to elucidate the importance of hiatus hernia in LPR.
Researchers discovered that chlorella crude extract improves intestinal adaptation in rats with short bowel syndrome, increasing villi height and absorption rates. This finding suggests an alternative to commercial enteral products for treating SBS.
Research found that inherited and acquired risk factors play a significant role in abdominal venous thrombosis. Acquired risk factors were more common in patients with Superior Vena Cava Syndrome (SVT), while hereditary risk factors were similar in both BCS and SVT groups.
A study published in the World Journal of Gastroenterology found that CT colonography is accurate for detecting colonic masses or polyps equal to or greater than 10mm. This non-invasive technique replaced double contrast barium enema (DCBE) for evaluating incomplete colonoscopies.
Researchers found MRN can be differentiated from HCC using CT/MRI features, including typical hyperdense appearance and lack of enhancement. Liver biopsy can be avoided if supported by these images, reducing the need for repeated biopsies.
This study investigates whether delayed ethyl pyruvate therapy can attenuate experimental SAP via reducing serum HMGB1 levels in rats. The results showed that ethyl pyruvate significantly reduced serum HMGB1 levels, protected against liver, renal, and lung injury, and prolonged survival time in rats.