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Molecular characterization and diversity analysis of bacterial communities associated with Dialeurolonga malleswaramensis （Hemiptera： Aleyrodidae） adults using 16S rDNA amplicon pyrosequencing and FISH

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Insect Science 2016年第5期23卷 704-711页

作者： Neeti Pandey raman rajagopal Gut Biology Lab Room No 117 Department of Zoology University of Delhi Delhi 110007 India

Dialeurolonga malleswaramensis Sundararaj （Hemiptera： Aleyrodidae） is a phytophagous sap sucking insect. It infests Polyalthia longifolia, an important avenue tree of India, effective in alleviating noise pollution and having immense medicinal importance. Samples of this insect were collected from Polyalthia longifolia. The cytochrome c oxidase subunit I gene （mtCOl） helped in the molecular characterization of the insect. This study reports the bacterial diversity in D. malleswararnensis adults by high throughput 16S rDNA amplicon pyrosequencing. The major genera identified were Portiera and Arsenophonus. Other bacterial genera detected were uncultured alpha proteobacterium, Sphingopyxis and Methylobacterium. We also employed fluorescence in situ hybridization （FISH） in whole mount samples to confirm the presence of dominant endosymbionts Portiera and Arsenophonus to the bacteriocyte of D. malleswaramensis. This study concludes that combining techniques like 16S rDNA amplicon pyrosequencing and FISH reveal both dominant and rare bacteria. The data also predict the evolutionary position of this pest with respect to other whitefly species using a mitochondrial marker.

关键词： 16S rDNA amplicon pyrosequencing bacterial diversity Dialeurolongamalleswaramensis FISH mtC01

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Efficacy of a Diabetes Specific Nutrition Supplement on Glycemic, Anthropometric, Dietary and Gut Health Markers in Adults with Type 2 Diabetes: An RCT

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Food and Nutrition Sciences 2024年第8期15卷 846-867页

作者： Deepti Khanna Hema S. Gopalan Kuzhandaivelu Abirami Vasudevan Sudha rajagopal Gayatri Kejal Joshi-Reddy Jaladhi Bhatt raman Ganesh Jeevan Karthikeyan Parkavi Vadivel Deepika Manoj Pareek Ranjit Mohan Anjana Viswanathan Mohan R&D Department Hindustan Unilever Limited Gurugram India Department of Foods Nutrition & Dietetics Research Madras Diabetes Research Foundation Chennai India Department of Diabetology Dr. Mohans Diabetes Specialities Centre Chennai India

With increasing incidence of diabetes, use of diabetes specific nutrition supplements (DSNS) is common for better management of the disease. To study effect of 12-week DSNS supplementation on glycemic markers, anthropometry, lipid profile, SCFAs, and gut microbiome in individuals with diabetes. Markers studied were glycemic [Fasting Blood Glucose (FBG), Post Prandial Glucose (PPG), HbA1c, Incremental Area under curve (iAUC), Mean Amplitude of Glycemic Excursions (MAGE), Time in/above Range (TIR/TAR)], anthropometry [weight, Body Mass Index (BMI), waist circumference (WC)], lipid profile, diet and gut health [plasma short chain fatty acids (SCFAs)]. N = 210 adults were randomized to receive either DSNS with standard care (DSNS + SC;n = 105) or standard care alone (SC alone;n = 105). After 12 weeks, significant differences between DSNS + SC versus SC alone was observed in FBG [−3 ± 6 vs 14 ± 6 mg/dl;p = 0.03], PPG [−35 ± 9 vs −3 ± 9 mg/dl;p = 0.01], weight [−0.6 ± 0.1 vs 0.2 ± 0.1 kg;p = 0.0001], BMI [−0.3 ± 0.1 vs 0.1 ± 0.1 kg/m2;p = 0.0001] and WC [−0.3 ± 0.2 vs 0.2 ± 0.2 cm;p = 0.01]. HbA1C and low-density lipoprotein (LDL) were significantly reduced in DSNS + SC [−0.2 ± 0.9;p = 0.04 and −5 mg/dl;p = 0.03] respectively with no change in control. Continuous Glucose Monitoring (CGM) reported significant differences between DSNS + SC versus SC alone for mean glucose [−12 ± 65 vs 28 ± 93 mg/dl;p < 0.01], TAR 180 [−9 ± 42 vs 7 ± 45 mg/dl;p = 0.04], TAR 250 [−3 ± 27 vs 9 ± 38 mg/dl;p = 0.05], iAUC [−192 (1.1) vs −48 (1.1) mg/dl;p = 0.03]. MAGE was significantly reduced for both DSNS + SC (−19 ± 67;p < 0.001) and SC alone (−8 ± 70;p = 0.04), with reduction being more pronounced for DSNS + SC. DSNS + SC reported a decrease in carbohydrate energy % [−9.4 (−11.3, −7.6) %;p < 0.0001] and amount [−47.4 (−67.1, −27.7) g;p < 0.0001], increased dietary fiber [9.5 (7.2, 11.8) g;p < 0.0001] and protein energy % [0.9 (0.5, 1.3) %;p < 0.0001] versus SC alone. DSNS + SC reported signi

关键词： Diabetes Specific Nutrition Supplement Standard of Care Diabetes Glycemic Markers HbA1C

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Glycemic Index and Response of a Plant Based Nutritional Supplement and Its Subjective Satiety Following Its Use in Indian Adults

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Food and Nutrition Sciences 2019年第8期10卷 937-946页

作者： Bhoite Rachana Parthasarthy Vijayalakshmi raman Jeevan Ganesh Viswanathan Gopinath Karthikeyan Parkavi Vasudevan Kavitha Nagamuthu Gayathri rajagopal Gayathri Shanmugam Shobana Ranjit Mohan Anjana Ranjit Unnikrishnan Vasudevan Sudha Mehta Suyog Archana Toppo Panda Acharya Shivani Viswanathan Mohan Dr. Reddy’s Laboratories Hyderabad India Department of Foods Nutrition & Dietetics Research Madras Diabetes Research Foundation Chennai India Department of Diabetology Dr. Mohan’s Diabetes Specialities Centre Chennai India

Background: Diet plays a vital role in managing diabetes. Foods with a low glycemic index provide lower postprandial glucose spikes and induce satiety. The objective of this study was to assess the Glycemic index (GI) without milk and Glycemic response (GR) with milk of two different flavours of a plant-based supplement which is high in protein and fibre, along with a subjective assessment of satiety. Methods: Fifteen overweight/obese subjects aged 18 - 45 years were recruited. After overnight fasting, blood samples were drawn at 5 mins before food consumption (-5), 0, 15, 30, 45, 60, 90 and 120 minutes. Participants underwent 3 days of reference food testing and 1 day of test food in random order with 2 days of wash-out period. The GI was assessed using a validated protocol recognized by FAO/WHO, as well as the guidelines by the International Dietary Carbohydrate Task Force for GI Methodology. The satiety index was measured using the Visual Analog Scale (VAS). The dietary intake of the subjects was measured by 24-hour dietary recall. The Incremental Area Under the Curve (IAUC) was calculated using the trapezoid rule. Results: Both the flavours of the supplement had low GI & GR. The GI and GR of Flavour 1 were 27.3 ± 4.8 & 16.4 ± 2.6 (Mean ± SEM) respectively. For Flavour 2 the GI and GR were 36.7 ± 4.4 & 25.7 ± 2.3 (Mean ± SEM). For Flavour 1, 60% and for flavour 2 66.7% of subjects reported feeling hungry only after 3 hours, showing good satiety. Conclusion: The plant-based high fibre high protein supplement in both flavours showed a low glycemic index and hence may be useful to include in the diets to reduce the postprandial glycemic response and could improve satiety.

关键词： Glycemic Index High Protein High Fiber Satiety Visual Analog Scale

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