scholarly journals The association of gut microbiota characteristics in Malawian infants with growth and inflammation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Arox W. Kamng’ona ◽  
Rebecca Young ◽  
Charles D. Arnold ◽  
Emma Kortekangas ◽  
Noel Patson ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Head Circumference ◽  
Diversity Index ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Z Scores ◽  
Stool Samples ◽  
Independent Variable ◽  
Microbiota Diversity ◽  
Weight For Age

Abstract We tested the hypotheses that a more mature or diverse gut microbiota will be positively associated with infant growth and inversely associated with inflammation. We characterized gut microbiota from the stool samples of Malawian infants at 6 mo (n = 527), 12 mo (n = 632) and 18 mo (n = 629) of age. Microbiota diversity and maturity measurements were based on Shannon diversity index and microbiota for age Z-score (MAZ), respectively. Growth was calculated as change in Z-scores for weight-for-age (WAZ), length-for-age (LAZ) and head circumference-for-age (HCZ) from 6 to 12 mo and 12 to 18 mo. Biomarkers of inflammation (alpha-1-acid glycoprotein (AGP) and C-reactive protein (CRP)) were measured at 6 and 18 mo. Multivariable models were used to assess the association of each independent variable with each outcome. Microbiota diversity and maturity were related to growth in weight from 6 to 12 mo, but not to growth in length or head circumference or to growth from 12 to 18 mo. Microbiota diversity and maturity may also be linked to inflammation, but findings were inconsistent.

scholarly journals Gut Microbiota Diversity and C-Reactive Protein Are Predictors of Disease Severity in COVID-19 Patients

2021 ◽  
Vol 12 ◽  
Author(s):  
André Moreira-Rosário ◽  
Cláudia Marques ◽  
Hélder Pinheiro ◽  
João Ricardo Araújo ◽  
Pedro Ribeiro ◽  
...  
Keyword(s):  
Risk Factors ◽  
Gut Microbiota ◽  
Diversity Index ◽  
Clinical Severity ◽  
Rrna Gene ◽  
C Reactive Protein ◽  
Clinical Progression ◽  
Cross Sectional ◽  
Reactive Protein ◽  
Microbiota Diversity

The risk factors for coronavirus disease 2019 (COVID-19) severity are still poorly understood. Considering the pivotal role of the gut microbiota on host immune and inflammatory functions, we investigated the association between changes in the gut microbiota composition and the clinical severity of COVID-19. We conducted a multicenter cross-sectional study prospectively enrolling 115 COVID-19 patients categorized according to: (1) the WHO Clinical Progression Scale—mild, 19 (16.5%); moderate, 37 (32.2%); or severe, 59 (51.3%), and (2) the location of recovery from COVID-19—ambulatory, 14 (household isolation, 12.2%); hospitalized in ward, 40 (34.8%); or hospitalized in the intensive care unit, 61 (53.0%). Gut microbiota analysis was performed through 16S rRNA gene sequencing, and the data obtained were further related to the clinical parameters of COVID-19 patients. The risk factors for COVID-19 severity were identified by univariate and multivariable logistic regression models. In comparison to mild COVID-19 patients, the gut microbiota of moderate and severe patients have: (a) lower Firmicutes/Bacteroidetes ratio; (b) higher abundance of Proteobacteria; and (c) lower abundance of beneficial butyrate-producing bacteria such as the genera Roseburia and Lachnospira. Multivariable regression analysis showed that the Shannon diversity index [odds ratio (OR) = 2.85, 95% CI = 1.09–7.41, p = 0.032) and C-reactive protein (OR = 3.45, 95% CI = 1.33–8.91, p = 0.011) are risk factors for severe COVID-19 (a score of 6 or higher in the WHO Clinical Progression Scale). In conclusion, our results demonstrated that hospitalized patients with moderate and severe COVID-19 have microbial signatures of gut dysbiosis; for the first time, the gut microbiota diversity is pointed out as a prognostic biomarker of COVID-19 severity.

scholarly journals Gut microbiota diversity and C-Reactive Protein are predictors of disease severity in COVID-19 patients

2021 ◽  
Author(s):  
André Moreira-Rosário ◽  
Cláudia Marques ◽  
Hélder Pinheiro ◽  
João Ricardo Araújo ◽  
Pedro Ribeiro ◽  
...  
Keyword(s):  
Risk Factors ◽  
Gut Microbiota ◽  
Disease Severity ◽  
Severe Disease ◽  
Clinical Severity ◽  
Rrna Gene ◽  
C Reactive Protein ◽  
Clinical Progression ◽  
Reactive Protein ◽  
Microbiota Diversity

AbstractRisk factors for COVID-19 disease severity are still poorly understood. Considering the pivotal role of gut microbiota on host immune and inflammatory functions, we investigated the association between changes in gut microbiota composition and the clinical severity of COVID-19. We conducted a multicentre cross-sectional study prospectively enrolling 115 COVID-19 patients categorized according to: 1) WHO Clinical Progression Scale - mild 19 (16.5%), moderate 37 (32.2%) or severe 59 (51.3%); and 2) location of recovery from COVID-19 - ambulatory 14 (household isolation; 12.2%), hospitalized in ward 40 (34.8%) or intensive care unit 61 (53.0%). Gut microbiota analysis was performed through 16S rRNA gene sequencing and data obtained was further related with clinical parameters of COVID-19 patients. Risk factors for COVID-19 severity were identified by univariate and multivariable logistic regression models.In comparison with mild COVID-19 patients, the gut microbiota of moderate and severe patients has: a) lower Firmicutes/Bacteroidetes ratio, b) higher abundance of Proteobacteria; and c) lower abundance of beneficial butyrate-producing bacteria such as Roseburia and Lachnospira genera. Multivariable regression analysis showed that Shannon index diversity (odds ratio [OR] 2.85 [95% CI 1.09-7.41]; p=0.032) and C-Reactive Protein (OR 3.45 [95% CI 1.33-8.91]; p=0.011) were risk factors for COVID-19 severe disease (a score of 6 or higher in WHO clinical progression scale).In conclusion, our results demonstrated that hospitalised moderate and severe COVID-19 patients have microbial signatures of gut dysbiosis and for the first time, the gut microbiota diversity is pointed out as a prognostic biomarker for COVID-19 disease severity.

scholarly journals Dysbiosis characteristics of gut microbiota in cerebral infarction patients

2020 ◽  
Vol 11 (1) ◽  
pp. 124-133
Author(s):  
Hao Li ◽  
Xiaohui Zhang ◽  
Dengdeng Pan ◽  
Yongqiang Liu ◽  
Xuebing Yan ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Cerebral Infarction ◽  
Operating Characteristic ◽  
National Institutes Of Health ◽  
Diagnostic Model ◽  
Healthy Controls ◽  
Characteristic Analysis ◽  
Rrna Sequencing ◽  
Stool Samples ◽  
Microbiota Diversity

AbstractObjectiveThe aim of this study is to investigate the dysbiosis characteristics of gut microbiota in patients with cerebral infarction (CI) and its clinical implications.MethodsStool samples were collected from 79 CI patients and 98 healthy controls and subjected to 16S rRNA sequencing to identify stool microbes. Altered compositions and functions of gut microbiota in CI and its correlation with clinical features were investigated. Random forest and receiver operating characteristic analysis were used to develop a diagnostic model.ResultsMicrobiota diversity and structure between CI patients and healthy controls were overall similar. However, butyrate-producing bacteria (BPB) were significantly reduced in CI patients, while lactic acid bacteria (LAB) were increased. Genetically, BPB-related functional genes were reduced in CI patients, whereas LAB-related genes were enhanced. The interbacterial correlations among BPB in CI patients were less prominent than those in healthy controls. Clinically, BPB was negatively associated with the National Institutes of Health Stroke Scale (NIHSS), while LAB was positively correlated with NIHSS. Both BPB and LAB played leading roles in the diagnostic model based on 47 bacteria.ConclusionsThe abundance and functions of BPB in CI patients were significantly decreased, while LAB were increased. Both BPB and LAB displayed promising potential in the assessment and diagnosis of CI.

Abstract P174: Adiposity Mediates the Association Between Gut Microbial Diversity and Hypertension: Cardia Study

Circulation ◽  
2020 ◽  
Vol 141 (Suppl_1) ◽  
Author(s):  
Yuichiro Yano ◽  
Anju Lulla ◽  
Annie Green Howard ◽  
Samuel Gidding ◽  
Paul Muntner ◽  
...  
Keyword(s):  
Microbial Diversity ◽  
Antihypertensive Medication ◽  
Diversity Index ◽  
Metagenomic Sequencing ◽  
Mediation Analyses ◽  
Shotgun Metagenomic Sequencing ◽  
Stool Samples ◽  
Microbiota Diversity ◽  
Microbial Effects

Introduction: We have shown that gut microbial diversity is associated with hypertension in the Coronary Artery Risk Development in Young Adults (CARDIA) Study. Animal models have documented gut microbial effects on adiposity, a known risk factor for hypertension. The extent to which adiposity may mediate the association between the gut microbiome and hypertension has not been studied. Hypothesis: We hypothesize that adiposity is a mediator of the association between gut microbial diversity and hypertension. Methods: We analyzed data from the CARDIA Study (480 participants). Shotgun metagenomic sequencing was performed on DNA extracted from stool samples collected at the Year 30 exam (2015-2016). Taxonomic classification of sequenced reads was performed using Kraken2. Within-person gut microbial diversity was assessed at the genus level using the Shannon Diversity Index and richness (number of distinct genera); lower values indicate less diversity. Hypertension was defined as systolic BP ≥140, diastolic BP ≥90 mm Hg, or taking antihypertensive medication. We performed mediation analyses to quantify the percentage of the total estimated effect of gut microbial diversity on hypertension that is mediated by adiposity as assessed using body mass index (BMI). Results: Mean age of the participants was 55.1 (3.4) years, 47% were African American, and 53% were female. In multivariable-adjusted mediation analysis, BMI explained on average 26-34% of the association between gut microbiota diversity and hypertension (Table). Results were robust to adjustment for sociodemographic variables (Model 2) and health behaviors (Model 3). Conclusions: Approximately one-third of the total effect of gut microbial diversity on hypertension is mediated through adiposity.

scholarly journals Maternal gut microbiota is associated with newborn anthropometrics in a sex-specific manner

2019 ◽  
Vol 10 (6) ◽  
pp. 659-666 ◽  
Author(s):  
Yumi Sato ◽  
Kenichi Sakurai ◽  
Hiromi Tanabe ◽  
Tamotsu Kato ◽  
Yumiko Nakanishi ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Head Circumference ◽  
Univariate Analysis ◽  
Positive Association ◽  
Short Chain Fatty Acids ◽  
Foetal Growth ◽  
Specific Effects ◽  
Mother And Child ◽  
Health And Disease ◽  
Stool Samples

AbstractMaternal gut microbiota is thought to be one of the important factors in the developmental origins of health and disease (DOHaD) concept, but the effects of maternal gut microbiota on foetal growth are not well known. In this study, the association between maternal gut microbiota and foetal growth was investigated. Maternal and newborn information, as well as stool samples at the third trimester of pregnancy, were obtained from 51 mother–newborn pairs from the Chiba study of Mother and Child Health (C-MACH). Gut microbiota was analysed by 16S rRNA sequencing of stool samples and short-chain fatty acids (SCFAs) in stool were analysed by gas chromatography-tandem mass spectrometry. After adjustment for covariates, it was found that maternal gut microbial diversity had a positive association with head circumference in newborn males (Chao 1: adjusted r = 0.515, p = 0.029). Genus Parabacteroides and genus Eggerthella showed negative associations with newborn head circumference and weight, respectively in males (genus Parabacteroides: adjusted r = −0.598, p = 0.009, genus Eggerthella: adjusted r = −0.481, p = 0.043). On the other hand, genus Streptococcus showed a negative association with newborn height in females (adjusted r = −0.413, p = 0.040). In addition, hexanoate was involved in the association between maternal gut microbiota and newborn anthropometrics in the univariate analysis, but not in the multivariate analysis. These data suggest that maternal gut microbiota has sex-specific effects on foetal growth. Maternal gut microbiota is an important factor for optimal intrauterine growth.

scholarly journals Association of the Maternal Gut Microbiota/Metabolome with Cord Blood CCL17

Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2837
Author(s):  
Hiromi Tanabe ◽  
Kenichi Sakurai ◽  
Yumiko Nakanishi ◽  
Tamotsu Kato ◽  
Yohei Kawasaki ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Immune Responses ◽  
Cord Blood ◽  
Diversity Index ◽  
Lactate Concentration ◽  
Allergic Diseases ◽  
Serum Levels ◽  
Specific Ige ◽  
Rrna Sequencing ◽  
Stool Samples

Chemokine (C-C motif) ligand 17 (CCL17) is a pro-allergic factor: high CCL17 levels in cord blood (CB) precede later allergic predisposition. Short-chain fatty acid (SCFA) treatment during pregnancy has been shown to protect mouse pups against allergic diseases. The maternal microbial metabolome during pregnancy may affect fetal allergic immune responses. We therefore examined the associations between CB CCL17 and gut SCFA levels in healthy pregnant Japanese women. CB CCL17 serum levels at birth, and maternal non-specific IgE levels in maternal sera at 32 weeks of gestation were measured. Maternal stool samples were collected at 12 (n = 59) and 32 (n = 58) weeks of gestation for gut microbiota analysis, based on barcoded 16S rRNA sequencing and metabolite levels. The CB CCL17 levels correlated negatively with butyrate concentrations and positively with isobutyrate at 12 weeks; CB CCL17 correlated positively with valerate and lactate at 32 weeks. Similarly, butyrate levels correlated negatively with maternal non-specific IgE levels, whereas the lactate concentration correlated positively with IgE levels. At 32 weeks, the Shannon diversity index (SDI) of Firmicutes and Proteobacteria correlated negatively with CB CCL17 levels, while those of the total microbiota correlated positively with the CB CCL17 levels. These metabolites may alter fetal immune responses. This study provides the first link between maternal metabolites during pregnancy and the risk of allergic diseases in human offspring.

scholarly journals The effect of different drinking water in culture medium on feces microbiota diversity

2020 ◽  
Author(s):  
Kun Zhou ◽  
Weili Liu ◽  
Zhaoli Chen ◽  
Dong Yang ◽  
Zhigang Qiu ◽  
...  
Keyword(s):  
Drinking Water ◽  
Gut Microbiota ◽  
Mineral Water ◽  
Culture Medium ◽  
Diversity Index ◽  
Tap Water ◽  
Brain Heart Infusion ◽  
Rrna Gene ◽  
16S Rrna Gene Analysis ◽  
Microbiota Diversity

Abstract The human gut harbors trillions of microbes, which are extremely important to the health of the host. However, the effect of drinking water on gut microbiota has been poorly understood. In this study, we explored the response of BALB/c mice gut bacterial community (feces) to the different types of drinking water, including commercial bottled mineral water (MW), natural water (NW), purified water (PW) and tap water (TW). Feces were cultured with Brain Heart Infusion Broth dissolved in four types of drinking water. 16S rRNA gene analysis was performed. Our results reveal that the microbiota composition is different among culturing with four types of drinking water. As the culture time increases, the number of OTUs significantly decreased, except under the aerobic condition of MW. Under aerobic conditions on the 5th day, the considerable differences of alpha diversity index are found between MW and three others, and there are the most unique taxa in MW group. Importantly, the LEfSe analysis discovers that the Bacteroidetes taxa dominate the differences between MW and the other water types. Our findings demonstrate that the mineral water as a culture medium may lead to a progressive increase of the gut microbiota diversity by providing the growth convenience to Bacteroidetes.

scholarly journals Casein glycomacropeptide is well tolerated in healthy adults and changes neither high-sensitive C-reactive protein, gut microbiota nor faecal butyrate: a restricted randomised trial

2020 ◽  
pp. 1-12 ◽  
Author(s):  
Pernille G. Wernlund ◽  
Christian L. Hvas ◽  
Jens F. Dahlerup ◽  
Martin I. Bahl ◽  
Tine R. Licht ◽  
...  
Keyword(s):  
Body Weight ◽  
Gut Microbiota ◽  
Randomised Trial ◽  
Gastrointestinal Symptoms ◽  
Healthy Adults ◽  
Controlled Study ◽  
Microbiota Composition ◽  
C Reactive Protein ◽  
Immunomodulatory Effects ◽  
Reactive Protein

Abstract Casein glycomacropeptide (CGMP) is a bioactive milk-derived peptide with potential anti-inflammatory effects. Animal studies suggest that CGMP may work by altering gut microbiota composition and enhancing butyrate production. Its effects on intestinal homoeostasis, microbiota and metabolites in humans are unknown. The aim of the present study was to assess both the intestinal and systemic immunomodulatory effects of orally ingested CGMP. We hypothesised that daily oral CGMP intake would reduce high-sensitive C-reactive protein (hsCRP) in healthy adults. In a single-centre limited but randomised, double-blinded, reference-controlled study, we compared the effects of a 4-week intervention of either 25 g of oral powder-based chocolate-flavoured CGMP or a reference drink. We included twenty-four healthy adults who all completed the study. CGMP had no systemic or intestinal immunomodulatory effects compared with a reference drink, with regard to either hsCRP or faecal calprotectin level, faecal microbiota composition or faecal SCFA content. CGMP ingestion did not affect satiety or body weight, and it caused no severe adverse events. The palatability of CGMP was acceptable, and adherence was high. CGMP did not induce or change gastrointestinal symptoms. In conclusion, we found no immunomodulatory effects of CGMP in healthy adults. In a minor group of healthy adults, oral ingestion of 25 g of CGMP during 4 weeks was safe, well tolerated, had acceptable palatability and was without any effects on body weight.

scholarly journals The Nutritional Status of Individuals Adopted Internationally as Children: A Systematic Review

Nutrients ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 245
Author(s):  
Richard Ivey ◽  
Marko Kerac ◽  
Michael Quiring ◽  
Hang T. Dam ◽  
Susie Doig ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Nutritional Status ◽  
Body Mass ◽  
Head Circumference ◽  
Older Children ◽  
Z Scores ◽  
Catch Up ◽  
Height For Age ◽  
Weight For Age

Since 1955, international adoption has been a way of finding homes for children who have been orphaned or abandoned. We aimed to describe the nutritional status of individuals adopted internationally and their long-term nutritional and health outcomes. We searched four databases for articles published from January 1995 to June 2020, which included information on anthropometric or micronutrient status of children adopted internationally (CAI). Mean Z-scores on arrival to adoptive country ranged from −2.04 to −0.31 for weight for age; −0.94 to 0.39 for weight for height; −0.7 to 0 for body mass index; −1.89 to −0.03 for height for age; −1.43 to 0.80 for head circumference for age. Older children, those adopted from institutionalized care or with underlying disability, were more likely to be malnourished. Though long-term data was scarce, mean Z-scores post-adoption ranged from −0.59 to 0.53 for weight for age; −0.31 to 1.04 for weight for height; 0.39 to 1.04 for body mass index; −1.09 to 0.58 for height for age; −0.06 to 1.23 for head circumference for age. We conclude that though CAI are at high risk of malnutrition at baseline, marked catch-up growth is possible, including for those older than two years of age on arrival. This has implications not only for CAI but for the wider population of malnourished children worldwide. Research on how to optimize catch-up growth is a priority.

scholarly journals The Occurrence of Coronary Artery Lesions in Kawasaki Disease Based on C-reactive Protein Levels: A Retrospective Cohort Study

2020 ◽  
Author(s):  
Hyo Soon An ◽  
Gi-Beom Kim ◽  
Mi Kyoung Song ◽  
Sang Yun Lee ◽  
Hye Won Kwon ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Kawasaki Disease ◽  
Demographic Data ◽  
Artery Aneurysm ◽  
Nationwide Survey ◽  
Coronary Artery Lesions ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Significant Difference ◽  
Z Scores

Abstract BackgroundThis study aimed to assess the occurrence of coronary artery lesions (CAL) in patients with Kawasaki disease (KD) according to serum C-reactive protein (CRP) levels. MethodsThis retrospective analysis was based on the nationwide survey of KD conducted in the Republic of Korea between 2015 and 2017. We enrolled 9131 patients and defined low (<3 mg/dL) and high (≥3 mg/dL) CRP groups. Demographic data, clinical characteristics, z-scores, and scores based on the Japanese criteria for CAL were compared between the two groups. Logistic regression analysis was used to identify CAL risk factors.ResultsThe low CRP group accounted for 23% of patients. A significant difference was observed for the mean age at diagnosis (high vs. low CRP, 34.4 ± 24.9 vs. 31.7 ± 24.8 months, p<0.001) and fever duration (high vs. low CRP, 6.6 ± 2.2 vs. 6.3 ± 2.5 days, p<0.001). A non-response to intravenous immunoglobulin treatment was found in 1377 patients (20.1%) and 225 patients (11.7%) in the high and low CRP groups, respectively (p<0.001). CAL were found in 12.9% and 18.3% of the high and low CRP patients, respectively (p<0.001), based on z-scores; and in 9.9% and 12.5%, respectively (p = 0.001), based on the Japanese criteria in the acute phase. The giant coronary artery aneurysm occurrence ratio was similar between groups (p=1.0).ConclusionsCAL occurred in patients with both high and low CRP. Therefore, patients with KD should be carefully monitored regardless of their CRP levels.

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