Publications by authors named "Mazen Jamal"

Article Synopsis
  • The CONFIRM trial aimed to compare the effectiveness of annual fecal immunochemical tests (FIT) versus colonoscopies in reducing colorectal cancer mortality, enrolling over 50,000 veterans between May 2012 and December 2017.
  • The study analyzed participant demographics and examined reasons for those who chose not to participate, highlighting a mix of preferences for either colonoscopy or stool tests based on geographic and temporal factors.
  • Among the 50,126 participants recruited, there was a diverse representation, and the study also noted that 11,109 eligible individuals opted out of participation for various reasons, with insights gathered via case report forms.
View Article and Find Full Text PDF

Objective: Laparoscopic Heller myotomy and Dor fundoplication has become the gold standard in treating esophageal achalasia and robotic surgical platform represents its natural evolution. The objective of our study was to assess durable long-term clinical outcomes in our cohort.

Methods And Procedures: Between June 1, 1999 and June 30, 2019, 111 patients underwent minimally invasive treatment for achalasia (96 laparoscopically and 15 robotically).

View Article and Find Full Text PDF

Bouveret's syndrome is an unusual clinical presentation of gastric-outlet obstruction and is the most infrequent variant of gallstone ileus with just over 300 cases in the literature. A 73-year-old female presented with innocuous constitutional symptoms and was found to have Mirizzi type Vb, a cholecystoduodenal fistula with obstruction. Esophago-gastroduodenoscopy-attempted dislodgement was unsuccessful.

View Article and Find Full Text PDF

Background And Aims: Patients often refer to bowel preparation and associated dietary restrictions as the greatest deterrents to having a colonoscopy completed or performed. Large studies comparing a low-residue diet (LRD) and a clear liquid diet (CLD) are still limited. The aim of this study is to compare LRD and CLD with regard to bowel preparation quality, tolerance, and satisfaction among a diverse patient population.

View Article and Find Full Text PDF

Bile duct injury represents a complication after laparoscopic cholecystectomy, impairing quality of life and resulting in subsequent litigations. A five-year experience of bile duct injury repairs in 52 patients at a community hospital was reviewed. Twenty-nine were female, and the median age was 51 years (range, 20-83 years).

View Article and Find Full Text PDF

Objective: The efficacy and safety of oral lubiprostone for relieving symptoms of opioid-induced constipation (OIC) in patients with chronic noncancer pain were evaluated in a randomized, double-blind, placebo-controlled study. These data were also pooled with those from two similar phase 3 studies to explore the effects of methadone on treatment response.

Methods: In the primary study, adults with OIC (fewer than three spontaneous bowel movements [SBMs] per week) were randomized to receive lubiprostone 24 mcg or placebo twice daily for 12 weeks.

View Article and Find Full Text PDF

Background: Validated probe-based confocal endomicroscopy (pCLE) criteria for distinguishing hyperplastic polyps (HPs) and tubular adenomas (TA) have not yet been developed.

Aim: To develop pCLE criteria for distinguishing HP from TA and evaluate its performance characteristics among experts.

Methods: pCLE criteria for colon polyp histology were developed and tested in 2 phases prospectively.

View Article and Find Full Text PDF

Background: Barrett's esophagus (BE) is the primary risk factor for esophageal adenocarcinoma (EAC). Limited data exists regarding the frequency of histologically confirmed BE by both gender and ethnicity in the United States. The study aim was to determine whether the frequency of histologically confirmed BE varies by ethnicity and gender.

View Article and Find Full Text PDF

Aim: To perform meta-analysis of the use of Endocuff during average risk screening colonoscopy.

Methods: Scopus, Cochrane databases, MEDLINE/PubMed, and CINAHL were searched in April 2016. Abstracts from Digestive Disease Week, United European Gastroenterology, and the American College of Gastroenterology meeting were also searched from 2004-2015.

View Article and Find Full Text PDF

Background And Aims: Colonoscopy is extremely important for the identification and removal of precancerous polyps. Bowel preparation before colonoscopy is essential for adequate visualization. Traditionally, patients have been instructed to consume only clear liquids the day before a colonoscopy.

View Article and Find Full Text PDF

Objectives: This multicenter, phase 3 trial evaluated oral lubiprostone for constipation associated with non-methadone opioids in patients with chronic noncancer-related pain.

Methods: Adults with opioid-induced constipation (OIC; <3 spontaneous bowel movements [SBMs] per week) were randomized 1:1 to double-blind lubiprostone 24 μg or placebo twice daily for 12 weeks. The primary end point was the overall SBM response rate.

View Article and Find Full Text PDF

Background & Aims: No therapy has been proven to prevent the recurrence of diverticulitis. Mesalamine has shown efficacy in preventing relapse in inflammatory bowel disease, and there is preliminary evidence that it might be effective for diverticular disease. We investigated the efficacy of mesalamine in preventing recurrence of diverticulitis in 2 identical but separate phase 3, randomized, double-blind, placebo-controlled, multicenter trials (identical confirmatory trials were conducted for regulatory reasons).

View Article and Find Full Text PDF

Background: Patients with inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), are susceptible to protein-calorie malnutrition secondary to decreased oral intake, malabsorption, and increased metabolic expenditure. In this study, we seek to assess the national frequencies of parenteral nutrition (PN) use among hospitalized patients with IBD and to determine their in-hospital outcomes.

Methods: We analyzed the Nationwide Inpatient Sample from 1988-2006 to determine the frequency of PN usage among patients with UC or CD and to determine their in-hospital outcomes.

View Article and Find Full Text PDF

Background: Ambulatory esophageal pH monitoring is, currently, the recommended diagnostic exam for gastroesophageal reflux disease. Data are currently available for African-American (AA) and non-Hispanic white (nHw) volunteers among United States ethnic groups. The purpose of this study was to obtain normal values of 24-h esophageal pH by monitoring healthy adult Hispanic American (HA) volunteers and to compare these with values obtained from healthy AA and nHw volunteers to determine if ethnic variation exists in 24-h esophageal pH.

View Article and Find Full Text PDF

The treatment of cancer-associated pain as well as chronic non-cancer-related pain (CNCP) is an increasingly relevant topic in medicine. However, it has long been recognized that opiates can adversely affect many organ systems, most notably the gastrointestinal system. These are referred to as the spectrum of "opioid-induced bowel dysfunction" (OBD) or what we will refer to as "opioid-induced bowel disease" (OIBD) which include constipation, nausea, vomiting, delayed gastric emptying, and gastro-esophageal reflux disease (GERD), and a newer entity known as narcotic bowel syndrome (NBS).

View Article and Find Full Text PDF

Background/aim: Ultrasound marking by radiologists prior to percutaneous liver biopsy (PLB) results in biopsy site adjustment, decreased pain related complications and improved tissue yield. Minimal data exists on the impact of ultrasound marking by gastroenterologists on these parameters. The study aim was to evaluate whether ultrasound marking by gastroenterologists results in improved PLB tissue yield, fewer needle passes and decreased biopsy failure rates compared to blind biopsy, eliminating the need for a separate radiological evaluation.

View Article and Find Full Text PDF

Background: Gastroparesis causes significant morbidity and treatment options are limited. TZP-102 a novel, macrocyclic, selective, oral ghrelin receptor agonist, was evaluated in a randomized, double-blind, placebo-controlled trial in patients with diabetic gastroparesis.

Methods: A total of 92 outpatients were randomized to once-daily administrations of 10-mg (n = 22), 20-mg (n = 21), 40-mg (n = 23) TZP-102 or placebo (n = 26).

View Article and Find Full Text PDF

Esophageal cancer is mainly found in Asia and east Africa and is one of the deadliest cancers in the world. However, it has not garnered much attention in the Western world due to its low incidence rate. An increasing amount of data indicate that esophageal cancer, particularly esophageal adenocarcinoma, has been rising by 6-fold annually and is now becoming the fastest growing cancer in the United States.

View Article and Find Full Text PDF

Metastasis is the main reason for cancer-related death. S100A4 is one of the key molecules involved in this event. Several studies have shown that overexpression of S100A4 in non-metastatic cancer cells can make them become metastatic, and knockdown of S100A4 in metastatic cancer cells can curtail their invasive nature.

View Article and Find Full Text PDF

Aims. Nuclear translocation of β-catenin is common in many cancers including esophageal squamous cell carcinoma (ESCC). As a mediator of Wnt signaling pathway, nuclear β-catenin can activate many growth-related genes including CCN1, which in turn can induce β-catenin translocation.

View Article and Find Full Text PDF

Objectives: MiraLAX with Gatorade is a low-volume bowel preparation regimen that has been used widely in community practice and is anecdotally better tolerated than Golytely. Despite its widespread use, there are little data on the efficacy and tolerability of this solution and no safety data in the literature. The primary aim of this study was to compare the efficacy, safety, and tolerability of single-dosed and split-dosed regimens of MiraLAX/Gatorade with Golytely for bowel preparation before colonoscopy.

View Article and Find Full Text PDF

Objectives: The aim of this study was to determine trends in hospitalization rates and in-hospital mortality of cholangitis and also determine predictive factors of in-hospital mortality.

Methods: The Nationwide Inpatient Sample database was utilized for inpatient data analysis from 1988 to 2006. Patients with primary cholangitis International Classification of Diseases, ninth revision, Clinical Modification (ICD-9-CM) discharge diagnosis were included.

View Article and Find Full Text PDF

Background: Barrett's Esophagus (BE) is a pre-malignant condition. Limited data on BE dysplasia prevalence exists among United States ethnic groups.

Aim: The purpose of this study was to determine if the frequency of BE with dysplasia varies among the major ethnic groups presenting to our institution.

View Article and Find Full Text PDF

Background: Hepatic encephalopathy (HE) is a brain disorder that often results from cirrhosis due to viral hepatitis, metabolic and alcohol-related liver disease, and is characterised by cognitive, psychiatric and motor impairments. Recurrent bouts of overt HE negatively impact daily functioning and quality of life.

Aim: To evaluate the effect of rifaximin on health-related quality of life (HRQL) in cirrhotic patients with HE.

View Article and Find Full Text PDF