scholarly journals Metagenomic Analysis of Duodenal Microbiota Reveals a Potential Biomarker of Dysbiosis in the Course of Obesity and Type 2 Diabetes: A Pilot Study

2020 ◽  
Vol 9 (2) ◽  
pp. 369 ◽  
Author(s):  
Agnieszka Sroka-Oleksiak ◽  
Agata Młodzińska ◽  
Małgorzata Bulanda ◽  
Dominika Salamon ◽  
Piotr Major ◽  
...  

Numerous scientific studies confirm that, apart from environmental and genetic factors, a significant role is played by gastrointestinal microbiota in the aetiology of type 2 diabetes and obesity. Currently, scientists mainly focus on the distal intestinal microbiota, while the equally important proximal parts of the intestine are overlooked. The aim of the study was a qualitative analysis of the structure of the duodenal mucosa microbiota in groups of patients with obesity and with type 2 diabetes and where obesity qualified for bariatric surgery: sleeve gastrectomy. The microbiological results obtained were compared with some clinical parameters. As a result, it was possible to determine the microbiological core that the treatment and control groups had in common, including phyla: Firmicutes, Proteobacteria, and Actinobacteria. The patients with obesity and with type 2 diabetes and obesity presented a significantly lower number of genus Bifidobacterium compared to healthy subjects. Furthermore, the numbers of Bifidobacterium were positively correlated with the high density lipoprotein (HDL) concentration in the groups under study. The obtained results indicate that bacteria of the genus Bifidobacterium should be considered in the future in the context of a potential biomarker in the progress of type 2 diabetes and obesity.

2021 ◽  
pp. 097275312110000
Author(s):  
Madhava Sai Sivapuram ◽  
Vinod Srivastava ◽  
Navneet Kaur ◽  
Akshay Anand ◽  
Raghuram Nagarathna ◽  
...  

Background: Type 2 diabetes needs a better understanding of etiological factors and management strategies based on lifestyle and constitutional factors, given its high association rate with many cardiovascular, neurological disorders, and COVID-19 infection. Purpose: The present study was undertaken to investigate the effect of Diabetes-specific integrated Yoga lifestyle Protocol (DYP) on glycemic control and lipid profiles of diabetic adults. Along with the DYP intervention, the individuals residing in Chandigarh and Panchkula union territories in the northern part of India were assessed for Ayurveda-based body–mind constitutional type. Ayurveda describes body–mind constitution as “ prakriti,” which has been discussed from two angles, namely physiological and psychological as body and mind are correlated. Methods: Cluster sampling of waitlist control study subjects was used as the sampling method for the study. A total of 1,215 registered subjects (81 diabetic) responded in randomly selected clusters in Chandigarh and Panchkula. Ayurveda physicians did Ayurveda body–mind constitutional assessment called prakriti assessment (physiological body–mind constitution assessment) in 35 participants (23 diabetic, 12 prediabetic) as a part of the study. Results: A group of 50 subjects was randomly selected for yoga intervention out of 81 diabetes mellitus adults, and 31 subjects were enrolled as waitlist controls. A significant decrease in the glycosylated hemoglobin levels from 8.49 ± 1.94% to 7.97 ± 2.20% in the intervention group was noticed. The lipid profiles of the DYP intervention and control groups were monitored. Three-month follow-up results of lipid profile diagnostic tests in intervention and control groups showed a significant difference between the two groups ( P < 0.05). Most diabetic and prediabetic individuals were found to have pitta dosha ( pitta controls all heat, metabolism, and transformation in the mind and body) as dominant constitution type. Conclusion: The study results demonstrated significant positive effects of yoga in diabetic individuals. This study has indicated the evidence for the safety and efficacy of the validated DYP for community-level interventions to prevent maladies like brain damage and stroke.


Genetika ◽  
2015 ◽  
Vol 47 (1) ◽  
pp. 161-170 ◽  
Author(s):  
Maryam Rezazadeh ◽  
Nasim Sohrabifar ◽  
Hossein Jafari ◽  
Ardabili Mohaddes ◽  
Jalal Gharesouran

Polymorphisms of the Calpain10 and TCF7L2 genes were identified as possible type 2 diabetes susceptibility genetic markers. We conducted a case-control study to evaluate the relation between SNP43 of calpain-10 and rs12255372 and rs7903146 in the TCF7L2 with type2 diabetes in western-north of Iran. The role of these variants in Iranian population was less clear. A total of 202 patients and healthy controls were enrolled to analysis the frequency distribution of Calpain10 and TCF7L2 polymorphisms (SNP43, rs12255372 and rs7903146) using polymerase chain reaction-restriction fragment length polymorphism (PCR - RFLP) method. The frequency of allele A in controls was significantly greater than that of diabetic patients (P=0.031), whereas the difference between distribution of SNP43 genotypes (A/A, A/G, G/G) were non- significant in case and control groups. Non significant association was also observed between G/G, A/G or A/A genotypes and type 2 Diabetes. The frequency of the ?T? allele of rs12255372 (G/T) was significantly associated with type 2 diabetes (OR= 0.55, 95% confidence interval [CI], 1.11-1.51; P<0.001). No allelic association was found for rs7903146(C/T) polymorphism. The distribution of alleles in case and control groups are significantly different indicating the G allele is associated with type 2 diabetes. The rs12255372 (G/T) may be associated with type 2 diabetes.


Author(s):  
Nivedita Pavithran ◽  
Harish Kumar ◽  
Arun Somasekharan Menon ◽  
Gopala Krishna Pillai ◽  
Karimassery Ramaiyer Sundaram ◽  
...  

Background: Inflammation is considered as a predictor of cardiovascular diseases in type 2 diabetes mellitus. No previous studies have investigated the effect of low glycemic index (LGI) recipes of South Indian cuisine on the risk factors of cardiovascular disease in patients with diabetes. Aim: The aim of this randomized controlled trial was to evaluate the improvement in cardiovascular risk factors and blood glucose control, in patients with type 2 diabetes, after intervention with recipes of Kerala cuisine, from locally available whole grain cereals, low in glycemic index. Method: This was a prospective and randomized controlled study that was conducted over a period of 24 weeks. A total of 80 participants were recruited from the Department of Endocrinology and Diabetes Outpatient in Kerala, South India. All 80 patients had type 2 diabetes, and were aged between 35 and 65 years. Participants were randomly assigned and advised to follow either a LGI diet plan (n = 40) or their usual diet, which served as a control group (n = 40). The advice was reinforced throughout the study period. Anthropometric, biochemical parameters which included glycemic and cardio-metabolic parameters were measured according to standard procedures. T-tests were conducted to compare the differences between intervention and control groups, and the Pearson correlation coefficient was used to evaluate associations between the variables. Results: There were significant differences (p < 0.05) between the intervention and control groups with respect to weight, HbA1c, insulin, triglycerides, Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), high sensitivity C-reactive protein (hs-CRP) and apolipoprotein B (ApoB). There was also a positive correlation between weight and blood glucose variables. ApoB was positively correlated with lipid profile and insulin levels. Conclusions: The long-term implementation of LGI diet of Kerala cuisine has been found to promote weight loss, enhance insulin sensitivity and reduce the cardiovascular risk.


ISRN Obesity ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Maria João Neuparth ◽  
Jorge Brandão Proença ◽  
Alice Santos-Silva ◽  
Susana Coimbra

Aim. Our aim was to study how different BMI scores may influence the levels of inflammation, oxidative stress, adipogenesis, glucose, and lipid metabolism, in lean, overweight, and obese Portuguese patients with type 2 diabetes mellitus (T2DM). Methods. We studied 28 lean, 38 overweight, and 17 obese patients with T2DM and 20 controls (gender and age matched). The circulating levels of oxLDL, CRP, and some adipokines—adiponectin, leptin, and chemerin—and the lipid profile were evaluated. Results. Obese patients presented significantly lower levels of adiponectin and higher leptin, oxLDL, and chemerin levels, as compared to the overweight, lean, and control groups. Overweight, compared to lean and control, subjects showed significantly lower adiponectin and higher leptin and chemerin levels; oxLDL values were significantly higher in overweight than in lean patients. Lean patients presented significantly higher chemerin values than the control. Obese patients presented significantly higher CRP values, as compared to lean patients and the control group. Obese and overweight patients presented significantly higher triglycerides values than lean patients. Except for CRP, all the observed significant changes between control and patients remained significant after statistical adjustment for the body mass index (BMI). Conclusion. The levels of leptin, adiponectin, oxLDL, CRP, and triglycerides in patients with T2DM seem to be more associated with obesity and less with diabetes. Chemerin levels were raised in lean, overweight, and obese patients, suggesting that, independently of BMI, an adipocyte dysfunction occurs. Moreover, chemerin may provide an important early biomarker of adipocyte dysfunction and a link between obesity and type 2 diabetes mellitus.


2014 ◽  
Vol 17 (3) ◽  
pp. 31-38 ◽  
Author(s):  
Ekaterina Nailyevna Dudinskaya ◽  
Olga Nikolaevna Tkacheva ◽  
Marina Vladimirovna Shestakova ◽  
Natalya Vasilyevna Brailova ◽  
Irina Dmitrievna Strazhesko ◽  
...  

Aim. To study the relationship between changes in the artery structure and function and peripheral lymphocyte telomere length in patients with type 2 diabetes mellitus (DM2). Materials and methods. A total of 50 patients with T2DM and without clinical manifestations of cardiovascular disease (CVD) were included in the study; the control group consisted of 49 people. The following tests were conducted for all study participants: carbohydrate metabolism evaluation, carotid artery duplex scan to measure intima?media complex thickness (IMT) and to determine the presence of atherosclerotic plaques, carotid?femoral pulse wave velocity (PWV) measurement and lymphocyte telomere length measurement. Results. The vascular changes were more pronounced in patients with T2DM than in controls. The telomeres were shorter in patients with T2DM than in those without diabetes (9.53?0.1 vs 9.86?0.1, p=0.033). The participants were divided according to the telomere length. Among patients with T2DM, there were significant differences in the condition of the vascular wall [PWV: 10.58?0.1 m/s in patients with ?long? telomeres and 15.08?1.3 m/s in patients with ?short? telomeres; IMT: 0.80?0.09 mm in patients with ?long? telomeres and 0.87?0.05 mm in patients with ?short? telomeres (p=0.024)]. There were no significant differences in the arterial structure between the patient and control groups with ?long? telomeres [PWV: 10.58?0.1 m/s vs 10.5?0.5 m/s (p=0.913); IMT: 0.080?0.09 mm vs 0.73?0.03 mm (p=0.12). However, there were significant differences in the vascular wall condition between the patient and control groups with ?short? telomeres [PWV: 15.08?1.3 m/s vs, 10.7?0.5 m/s (p=0.015); IMT: 0.87?0.1 vs 0.78?0.1 (p=0.03)]. Conclusions. The signs of vascular ageing were more pronounced in patients with T2DM than in controls. However, despite diabetes, vascular changes were minimal in patients with ?long? lymphocyte telomeres, comparable with the state of the vascular walls in healthy individuals. Thus, enhanced lymphocyte telomere length may have a protective effect on the vascular wall and may prevent damage from carbohydrate metabolism disorders.


2012 ◽  
Vol 6 (2) ◽  
pp. 42-49
Author(s):  
Rayah Sulaiman Baban ◽  
Zeina Ismael Ibrahem ◽  
Isam Noori Al-Karawi

o study the association of serum leptin and glucose/leptin ratio with microalbuminuria in patients with type 2 diabetes mellitus at different durations, and to predict their effect on their renal function. A case control study was conducted in the International Diabetic Center at Al-Mustansiryia University in Baghdad-Iraq from 1st September 2008 to the 30th of July 2010. One hundred and eight male patients with type 2 diabetes mellitus (DM) were introduced in this study. Fifty three healthy subjects were used as a control. Fasting serum glucose, insulin, leptin, urea, creatinine and body mass index were estimated in both patient and control groups. Fifty three 49.07% out of 108 were diabetic for ≤2 years, while 55 patient 50.93% were diabetic >2 years. All patients were obese while healthy control subjects were not. Fasting serum glucose, insulin and leptin levels were found elevated in patients group while in control group their levels were found within normal range. Both urea and creatinine were also within the normal range for patients and control groups. Level of albumin in urine of patients with diabetes mellitus for ≤ 2years was found normal while in those with 3 to 6 or more than 6 years of DM, level of urinary albumin was found within the micro rang. A positive correlation with highly significant p value (<0.01) was found between patients (≤ 2 years and >2 years) serum leptin, glucose/leptin ratio and microalbuminuria. Conclusions: a strong association was found between serum leptin and glucose/leptin ratio with microalbuminuria in type 2 diabetic patients which can be used to predict the efficiency of their renal function at different durations and can be used as additional marker for the diagnosis of early stage of nephropathy.


2021 ◽  
Vol 5 (1) ◽  
pp. 10-18
Author(s):  
Miza Hiryanti Zakaria ◽  
Wan Mohamad Wan Bebakar ◽  
Aida Hanum Ghulam Rasool ◽  
Zulkefli Sanip ◽  
Wan Mohd Izani Wan Mohamed

Introduction: Type 2 diabetes (T2D) and obesity often coexist and are associated with increased cardiovascular complications. Objective: This study aims to determine the effects of cabergoline, a dopamine agonist on fasting blood glucose (FBG), glycated hemoglobin (HbA1c), lipid profile, blood pressure (BP) and arterial stiffness in overweight and obese T2D patients. Methods: Fifty-eight T2D patients were randomized to cabergoline 0.5 mg biweekly or control groups for 12 weeks. BP and arterial stiffness were recorded at baseline before starting study medication and repeated after 12 weeks. Pulse wave velocity (PWV) and central augmentation index (AIx) were used to assess arterial stiffness. Other parameters measured were anthropometric measurements, FBG, HbA1c and lipid profile. Changes in these parameters after 12 weeks compared to baseline were calculated for each group, and compared between the two groups. Results: Twenty-eight and twenty-six patients from cabergoline and control groups completed the treatment respectively. After 12 weeks, weight and diastolic BP were increased for both groups while body mass index (BMI) and waist circumference (WC) were increased in cabergoline group. PWV and AIx were not significantly different either within or between group comparisons. There were no significant differences in mean changes in all parameters between the two groups. Conclusion: Weight and diastolic BP were elevated in both groups while BMI and WC were increased in cabergoline group. Compared to control, cabergoline treatment at 0.5 mg biweekly in overweight and obese T2D patients for 12 weeks did not improve BP and arterial stiffness.


Author(s):  
Tatjana Sjakste ◽  
Ilva Poudžiunas ◽  
Valdis Pīrāgs ◽  
Māris Lazdiñš ◽  
Nikolajs Sjakste

Bioinformatic Analysis of Evolutional Conservatism and Functional Significance of Microsatellite Alleles of Human 14Q13.2 Region Associated with Type 2 Diabetes Mellitus The paper deals with bioinformatic and statistical analysis of the possible functional significance of the previously shown association of several microsatellite alleles in intron 6 of the human proteasome core particle PSMA6 gene (HSMS006) and four other microsatellites localised upstream in human chromosome 14q13.2 (HSMS801, HSMS702, HSMS701, HSMS602) with type 2 diabetes mellitus in Latvia and Botnia, Finland. Genotype analysis revealed that (CAA)8/(CAA)8 homozygotes of the HSMS602 marker were never found in Type 2 diabetes patients, although 6.56% of the individuals from the control groups were the (CAA)8/(CAA)8 homozygotes. For the HSMS801 marker the (AC)21/(AC)23 genotype was never found in the case group and in the control group it was detected with a frequency 4.40%; these differences were statistically significant (P < 0.05). In contrast to the Latvian population, the distribution of genotype frequencies in cases and controls taken from the Botnian dataset was almost similar. Haplotype analysis showed that in the Latvian population besides haplotypes including alleles differently represented in case and control groups, a combination of some alleles almost equally represented in both groups formed combinations that were more characteristic of either the case group or the control group. This indicates probable independent functional significance of these haplotypes that warrants further investigation. In the Botnian population, more allele combinations were observed, and the distribution of haplotypes in case and control groups differed from that observed in Latvia. The observed haplotype distributions might reflect differences between the studied populations: a homogenous and isolated Botnian vis-à-vis a mixed Latvian population. Linkage disequilibrium (LD) analysis of data on the Latvian population revealed nine of ten two-allele combinations manifesting a high LD. HSMS006 and HSMS602 combination had a low LD; among the analysed markers these were situated at the largest distance from one another. Data on the Botnian population showed that haplotypes in eight of ten combinations had a high LD, including the HSMS006 and HSMS602 combinations. It appears that the two populations differ also in linkage disequilibrium of two-loci haplotypes. Theoretical analysis of a potential functional role of the polymorphisms indicated the significance of the microsatellite length of HSMS602 and HSMS006 for the formation of DNA hairpins. The whole genomic region appears to be conservative in mammals.


Author(s):  
Małgorzata Zimny ◽  
Małgorzata Starczewska ◽  
Małgorzata Szkup ◽  
Katarzyna Karakiewicz-Krawczyk ◽  
Elżbieta Grochans ◽  
...  

Menopause is a natural period resulting from the decrease in hormonal activity of the ovaries. Growing hormonal deficiencies and changes in the body influence a variety of functions in women, leading to depression and decreased quality of life. The relationship between body composition, the severity of depressive and climacteric symptoms and the quality of life of women with type 2 diabetes and healthy women in the perimenopausal period was studied. Statistically significant differences were observed between the study and control groups regarding all body composition parameters except for protein and the content of torso soft tissues (p < 0.05). In both the study and control groups, resulting symptoms were significantly correlated with numerous body composition parameters (e.g., body mass, fat tissue mass, minerals, abdominal circumference), while symptoms of depression were significantly correlated with similar parameters only in the control group. A statistically relevant relationship was observed between the study and control groups with respect to quality of life in certain domains. The quality of life of women suffering from type 2 diabetes was worse compared with healthy women. Analysis of body composition showed significant differences between healthy women and those with type 2 diabetes. Healthy women showed a tendency to establish a link between body composition and depressiveness.


Pathogens ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 504
Author(s):  
Irina P. Balmasova ◽  
Evgenii I. Olekhnovich ◽  
Ksenia M. Klimina ◽  
Anna A. Korenkova ◽  
Maria T. Vakhitova ◽  
...  

Since periodontitis and type 2 diabetes mellitus are complex diseases, a thorough understanding of their pathogenesis requires knowing the relationship of these pathologies with other disorders and environmental factors. In this study, the representability of the subgingival periodontal microbiome of 46 subjects was studied by 16S rRNA gene sequencing and shotgun sequencing of pooled samples. We examined 15 patients with chronic periodontitis (CP), 15 patients with chronic periodontitis associated with type 2 diabetes mellitus (CPT2DM), and 16 healthy subjects (Control). The severity of generalized chronic periodontitis in both periodontitis groups of patients (CP and CPT2DM) was moderate (stage II). The male to female ratios were approximately equal in each group (22 males and 24 females); the average age of the subjects was 53.9 ± 7.3 and 54.3 ± 7.2 years, respectively. The presence of overweight patients (Body Mass Index (BMI) 30–34.9 kg/m2) and patients with class 1–2 obesity (BMI 35–45.9 kg/m2) was significantly higher in the CPT2DM group than in patients having only chronic periodontitis or in the Control group. However, there was no statistically significant difference in all clinical indices between the CP and CPT2DM groups. An analysis of the metagenomic data revealed that the alpha diversity in the CPT2DM group was increased compared to that in the CP and Control groups. The microbiome biomarkers associated with experimental groups were evaluated. In both groups of patients with periodontitis, the relative abundance of Porphyromonadaceae was increased compared to that in the Control group. The CPT2DM group was characterized by a lower relative abundance of Streptococcaceae/Pasteurellaceae and a higher abundance of Leptotrichiaceae compared to those in the CP and Control groups. Furthermore, the CP and CPT2DM groups differed in terms of the relative abundance of Veillonellaceae (which was decreased in the CPT2DM group compared to CP) and Neisseriaceae (which was increased in the CPT2DM group compared to CP). In addition, differences in bacterial content were identified by a combination of shotgun sequencing of pooled samples and genome-resolved metagenomics. The results indicate that there are subgingival microbiome-specific features in patients with chronic periodontitis associated with type 2 diabetes mellitus.


Sign in / Sign up

Export Citation Format

Share Document