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ABSTRACT: Effect of chewing gum on the oral microbiome

PROVIDER: PRJNA386079 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5520580.fastq.gz	Fastqsanger.gz
	SRR5520590.fastq.gz	Fastqsanger.gz
	SRR5525150.fastq.gz	Fastqsanger.gz
	SRR5525160.fastq.gz	Fastqsanger.gz
	SRR5525170.fastq.gz	Fastqsanger.gz

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2016-12-14 | PXD001554 | Pride

The effect of gum chewing and/or early oral intake on bowel function recovery after surgery of gynecological cancer patients: a randomized control trial

Project description:Interventions: Gum chewing Non-gum chewing Primary outcome(s): Rate of ileus Study Design: Factorial Randomized

| 2647197 | ecrin-mdr-crc

Molecular alterations elicited by chronic exposure to cigarette smoke and chewing tobacco in oral keratinocytes

Project description:Tobacco is mainly consumed in two different forms (smoking and chewing) that vary in their composition and methods of intake. Despite being the leading cause of oral cancer, the molecular mechanisms resulting in malignancy upon tobacco exposure are yet to be fully elucidated. We therefore sought to compare the molecular alterations in oral keratinocytes exposed to smoke and chewing tobacco. OKF6/TERT1 cells were exposed to cigarette smoke condensate or chewing tobacco for progressively increasing durations (2, 4, 6 and 8 months). We employed a TMT-based quantitative proteomics approach to investigate the adverse effects of chronic cigarette smoke or chewing tobacco exposure in oral keratinocytes. LC/MS3 analysis resulted in the quantification of 5,342 proteins and 2,821 proteins in cigarette smoke and chewing tobacco exposed cells, respectively. Upstream regulator analysis indicates the involvement of distinct regulators in CSC exposed cells compared to STE exposed cells. In addition, exome sequencing revealed discrete genetic alterations in cells exposed to each insult. Current analysis defines a clear distinction in the molecular dysregulation in oral cells in response to different tobacco-based insults. Some of the proteins dysregulated in cigarette smoke or chewing tobacco exposed cells may serve as potential early detection biomarkers which could aid in stratification of patients based on tobacco usage history.

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Modulating the gut microbiota by dietary guar gum protects against diet-induced obesity but promotes non-alcoholic steatohepatitis in mice

Project description:Non-alcoholic fatty liver disease (NAFLD) is rapidly becoming the most common liver disease worldwide, yet the pathogenesis of NAFLD is only partially understood. Here, we investigated the role of the gut bacteria in NAFLD by stimulating the gut bacteria via feeding mice the fermentable dietary fiber guar gum and suppressing the gut bacteria via chronic oral administration of antibiotics. Guar gum feeding profoundly altered the gut microbiota composition, in parallel with reduced diet-induced obesity and improved glucose tolerance. Strikingly, despite reducing adipose tissue mass and inflammation, guar gum enhanced hepatic inflammation and fibrosis, concurrent with markedly elevated plasma and hepatic bile acid levels. Consistent with a role of elevated bile acids in the liver phenotype, treatment of mice with taurocholic acid stimulated hepatic inflammation and fibrosis. In contrast to guar gum, chronic oral administration of antibiotics effectively suppressed the gut bacteria, decreased portal secondary bile acid levels, and attenuated hepatic inflammation and fibrosis. Neither guar gum or antibiotics influenced plasma lipopolysaccharide levels. In conclusion, our data indicate a causal link between changes in gut microbiota and hepatic inflammation and fibrosis in a mouse model of NAFLD, possibly via alterations in bile acids.

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Trial of Chewing Gum to Reduce Post Operative Ileus in Elective Colorectal Surgery

Project description:It is unknown whether post operative chewing gum will reduce post operative ileus. This study is a randomised controlled trial that will determine whether chewing gum three times a day following surgery will reduce post operative ileus. Time to passage of flatus will be used to determine that incidence of ileus.

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Effect of Chewing Gum on Postoperative Bowel Function Following Upper GI Tract Cancer Surgery

Project description:Every patient undergoing surgery in the abdomen will experience temporary paralysis of bowel function. This study evaluates whether chewing gum can reduce the bowel paralysis after surgery in patients undergoing either esophageal resection or whipples procedure. Half the study population will receive chewing gum while the other half will act as control.

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Influence of Gum Chewing on Postoperative Bowel Activity After Complete Staging Surgery for Gynecological Malignancies

Project description:Postoperative ileus can cause the accumulation of secretions and gas, resulting in nausea, vomiting and abdominal distension and pain. Prolonged paralytic ileus is one of the commonest reasons for delayed recovery and discharge from hospital following abdominal surgery. Advances in surgical techniques and peri-operative management such as the use of laparoscopic surgery, thoracic epidural analgesia, early postoperative feeding and mobilization, amongst others, have been shown to help in the resolution of postoperative ileus. Chewing gum, as a proxy for sham feeding, may accelerate the motility of the GI tract by stimulating the cephalic phase of digestion and eliciting the release of multiple promotility GI hormones. A number of small controlled studies evaluating the effect of chewing gum on postoperative intestinal recovery in patients undergoing colorectal surgery have been conducted. Decreased time for bowel function recovery and decreased hospital length of stay have not been consistently documented, possibly owing to the insufficient power of existing studies and study design issues. In addition, all previous studies have been limited by their use of sugarfree gum, containing known motility agents (eg, sorbitol). In this study, gum chewing was studied for its effect on women with surgical staging for malignant gynecologic disease such as endometrial cancer, cervix cancer and ovarian cancer.

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