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Impact of Milk Fat Globule Membrane on Cardiometabolic Risk, Gut Barrier Health, and Gut Microbiota in Adults With Metabolic Syndrome
Impact of Milk Fat Globule Membrane on Cardiometabolic Risk, Gut Barrier Health, and Gut M...
Impact of Milk Fat Globule Membrane on Cardiometabolic Risk, Gut Barrier Health, and Gut Microbiota in Adults With Metabolic Syndrome

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자료유형  
 학위논문 서양
최종처리일시  
20260202103701
ISBN  
9798314896716
DDC  
641
저자명  
Pokala, Avinash.
서명/저자  
Impact of Milk Fat Globule Membrane on Cardiometabolic Risk, Gut Barrier Health, and Gut Microbiota in Adults With Metabolic Syndrome
발행사항  
[Sl] : The Ohio State University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
208 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
주기사항  
Advisor: Bruno, Richard S.
학위논문주기  
Thesis (Ph.D.)--The Ohio State University, 2024.
초록/해제  
요약Metabolic syndrome (MetS) is a growing global health concern associated with significant cardiometabolic risk, highlighting the need for effective dietary strategies. Full-fat dairy products are associated with a lower prevalence of MetS, though their health effects remain debated. Milk fat globule membrane (MFGM), a component of full-fat dairy, has demonstrated anti-inflammatory and anti-microbial properties in preclinical studies and infants but has not been studied in adults with impaired cardiovascular health. Therefore, for this dissertation, the central hypothesis was that an MFGM-enriched beverage (MEB) would improve cardiometabolic risk factors (lipids, postprandial responses) and biomarkers of gut health (serum endotoxin concentration, intestinal permeability, and short-chain and branched-chain fatty acids). To test this hypothesis, we conducted a double-blind, randomized controlled crossover trial in adults with MetS (n = 24). Participants received MEB (3 servings/day) or a soy phospholipid comparator beverage (COMP) for two weeks while following a prescribed eucaloric diet. The results from Chapter 3 demonstrated high participant compliance with no adverse effects or dietary differences between trials. MEB largely did not affect postprandial excursions or fasting biomarkers of cardiometabolic health. However, there was noticeable inter-individual variability across all biomarkers, suggesting that a more tailored approach is needed to determine if some individuals might benefit more from MEB. To investigate this further in Chapter 4, we examined the fecal microbiota of participants to determine if changes in the microbiota, known to be heterogeneous in response to diet, could be implicated in the health benefits of MEB. Indeed, the relative abundance of several beneficial bacteria was higher in the MEB group compared to the COMP group, and several bacterial populations were favorably associated with biomarkers of endotoxemia and glucose tolerance. This suggests that a longer-term study might demonstrate that changes in gut microbiota leads to favorable systemic effects. Further, individuals with a greater shift in their microbiota, measured by β-diversity, had a greater enrichment of Akkermansia and functions related to sphingolipid metabolism compared to those with less change in β-diversity. Those with detectable levels of Akkermansia also had lower serum endotoxin concentrations and improved glucose tolerance, effects not observed in the COMP group. These exploratory findings suggest that the health benefits of MFGM is mediated by the gut microbiota. Further hypothesis-driven studies are needed to confirm if individuals with higher levels of Akkermansia are more likely to benefit from MEB. Thus, the outcomes from this dissertation provide novel evidence that: 1) a two-week controlled administration of MEB in individuals with MetS does not affect gut barrier function, glucose tolerance, or other cardiometabolic health biomarkers, which contradicts observational evidence suggesting that full-fat milk heightens cardiometabolic risk; and 2) for the first time in an adult population with MetS, MFGM favorably modulates the gut microbiota.
일반주제명  
Nutrition
일반주제명  
Microbiology
일반주제명  
Public health
키워드  
Metabolic syndrome
키워드  
Global health
키워드  
Microbiota
키워드  
Cardiometabolic risk
기타저자  
The Ohio State University Ohio State University Nutrition
기본자료저록  
Dissertations Abstracts International. 86-11B.
전자적 위치 및 접속  
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MARC

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■0820  ▼a641
■1001  ▼aPokala,  Avinash.
■24510▼aImpact  of  Milk  Fat  Globule  Membrane  on  Cardiometabolic  Risk,  Gut  Barrier  Health,  and  Gut  Microbiota  in  Adults  With  Metabolic  Syndrome
■260    ▼a[Sl]▼bThe  Ohio  State  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a208  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-11,  Section:  B.
■500    ▼aAdvisor:  Bruno,  Richard  S.
■5021  ▼aThesis  (Ph.D.)--The  Ohio  State  University,  2024.
■520    ▼aMetabolic  syndrome  (MetS)  is  a  growing  global  health  concern  associated  with  significant  cardiometabolic  risk,  highlighting  the  need  for  effective  dietary  strategies.  Full-fat  dairy  products  are  associated  with  a  lower  prevalence  of  MetS,  though  their  health  effects  remain  debated.  Milk  fat  globule  membrane  (MFGM),  a  component  of  full-fat  dairy,  has  demonstrated  anti-inflammatory  and  anti-microbial  properties  in  preclinical  studies  and  infants  but  has  not  been  studied  in  adults  with  impaired  cardiovascular  health.  Therefore,  for  this  dissertation,  the  central  hypothesis  was  that  an  MFGM-enriched  beverage  (MEB)  would  improve  cardiometabolic  risk  factors  (lipids,  postprandial  responses)  and  biomarkers  of  gut  health  (serum  endotoxin  concentration,  intestinal  permeability,  and  short-chain  and  branched-chain  fatty  acids).  To  test  this  hypothesis,  we  conducted  a  double-blind,  randomized  controlled  crossover  trial  in  adults  with  MetS  (n  =  24).  Participants  received  MEB  (3  servings/day)  or  a  soy  phospholipid  comparator  beverage  (COMP)  for  two  weeks  while  following  a  prescribed  eucaloric  diet.  The  results  from  Chapter  3  demonstrated  high  participant  compliance  with  no  adverse  effects  or  dietary  differences  between  trials.  MEB  largely  did  not  affect  postprandial  excursions  or  fasting  biomarkers  of  cardiometabolic  health.  However,  there  was  noticeable  inter-individual  variability  across  all  biomarkers,  suggesting  that  a  more  tailored  approach  is  needed  to  determine  if  some  individuals  might  benefit  more  from  MEB.  To  investigate this  further  in  Chapter  4,  we  examined  the  fecal  microbiota  of  participants  to  determine  if  changes  in  the  microbiota,  known  to  be  heterogeneous  in  response  to  diet,  could  be  implicated  in  the  health  benefits  of  MEB.  Indeed,  the  relative  abundance  of  several  beneficial  bacteria  was  higher  in  the  MEB  group  compared  to  the  COMP  group,  and  several  bacterial  populations  were  favorably  associated  with  biomarkers  of  endotoxemia  and  glucose  tolerance.  This  suggests  that  a  longer-term  study  might  demonstrate  that  changes  in  gut  microbiota  leads  to  favorable  systemic  effects.  Further,  individuals  with  a  greater  shift  in  their  microbiota,  measured  by  β-diversity,  had  a  greater  enrichment  of  Akkermansia  and  functions  related  to  sphingolipid  metabolism  compared  to  those  with  less  change  in  β-diversity.  Those  with  detectable  levels  of  Akkermansia  also  had  lower  serum  endotoxin  concentrations  and  improved  glucose  tolerance,  effects  not  observed  in  the  COMP  group.  These  exploratory  findings  suggest  that  the  health  benefits  of  MFGM  is  mediated  by  the  gut  microbiota.  Further  hypothesis-driven  studies  are  needed  to  confirm  if  individuals  with  higher  levels  of  Akkermansia  are  more  likely  to  benefit  from  MEB.  Thus,  the  outcomes  from  this  dissertation  provide  novel  evidence  that:  1)  a  two-week  controlled  administration  of  MEB  in  individuals  with  MetS  does  not  affect  gut  barrier  function,  glucose  tolerance,  or  other  cardiometabolic  health  biomarkers,  which  contradicts  observational  evidence  suggesting  that  full-fat  milk  heightens  cardiometabolic  risk;  and  2)  for  the  first  time  in  an  adult  population  with  MetS,  MFGM  favorably  modulates  the  gut  microbiota.
■590    ▼aSchool  code:  0168.
■650  4▼aNutrition
■650  4▼aMicrobiology
■650  4▼aPublic  health
■653    ▼aMetabolic  syndrome
■653    ▼aGlobal  health
■653    ▼aMicrobiota
■653    ▼aCardiometabolic  risk
■690    ▼a0570
■690    ▼a0410
■690    ▼a0573
■71020▼aThe  Ohio  State  University▼bOhio  State  University  Nutrition.
■7730  ▼tDissertations  Abstracts  International▼g86-11B.
■790    ▼a0168
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358218▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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