Chronic constipation is a prevalent, multifactorial gastrointestinal disorder, and its etiology and pathophysiology remain poorly understood. Recently studies using 16S rRNA-based microbiota profiling have demonstrated dysbiosis of gut microbiota in chronic constipation. In addition, alterations of fecal flora of the a group of severely constipated patients had been reported. Constipation, an indicator of gut dysbiosis in dialysis patients, may also pose a greater burden in dialysis patients. Some recent findings highlight the plausible link between the gut and the kidneys and provide additional insights into the pathogenesis of kidney disease progression and development of cardiovascular disease. Yet, the constipation in dialysis patients is usually ignored and not even draw the attention of dialysis physician as an ominous risk factor of constipated dialysis patients. In view of multiple factors link the gut and cardiorenal pathophysiology, and the scarcity of literature on this issue, the aim of this study is want to know if constipation can result in any changes to the intestinal microbiota and is it associated with inflammation, atherogenic profile and levels of microbial derived uremic toxins. Here, the investigators use both self-reported Bristol stool form scale (BSFS) scores and Roman IV criteria to diagnose constipation and 16S rDNA Illumina amplicon profiles of faecal samples of 90 dialysis patients to assess potential associations between microbiota composition and constipation. The relationship between uremic toxins and inflammation will also be explored in the dialysis suffering from constipation.

NCT04309019

Conditions

1. Constipation
2. Inflammation

MeSH:Inflammation Constipation

HPO:Colonic inertia Constipation

We quantified the analytes by using the analyte to standard peak area ratio on a Agilent 1100 High Performance Fluorescence detector G1321A and Agilent 1100 Series UV-Visible detectors G1314A. --- G1321A --- --- G1314A ---

Background. In advanced chronic kidney disease (CKD), multiple metabolic and nutritional abnormalities may contribute to the impairment of skeletal muscle mass and function thus predisposing patients to the condition of sarcopenia. Herein, we aim to investigate the association of uremic toxins and sacropenia. In addition, the prevalence and mortality predictive power of sarcopenia, defined by different methods, in a cohort of hemodialysis patients. Methods. We plan to evaluate 300 HD patients. Sarcopenia was defined as reduced muscle function assessed by handgrip strength (HGS <30th percentile of a population-based reference adjusted for sex and age) plus diminished muscle mass assessed by different methods: (i) midarm muscle circumference (MAMC) <90% of reference value (A), (ii) muscle wasting by DEXA (B) and (iii) reduced skeletal muscle mass index (<10.76 kg/m² men; <6.76 kg/m² women) estimated by bioelectrical impedance analysis (BIA) (C). Serum levels of 3 established uremic toxins such as indoxyl sulfate, p-cresol and hippuric acid will be measured. Besides, various relevant inflammatory markers will also be assessed. Patients will be followed for up to 3 years for all-cause mortality.

NCT03060590

Conditions

1. Sarcopenia

MeSH:Sarcopenia

We quantified the analytes by using the analyte to standard peak area ratio on a Agilent 1100 High Performance Fluorescence detector G1321A and Agilent 1100 Series UV-Visible detectors G1314A. --- G1321A --- --- G1314A ---