The impact of diet patterns and PUFA-related polymorphisms on ulcerative colitis in Hispanics
饮食模式和 PUFA 相关多态性对西班牙裔溃疡性结肠炎的影响
基本信息
- 批准号:10063510
- 负责人:
- 金额:$ 18.49万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-01-14 至 2023-11-30
- 项目状态:已结题
- 来源:
- 关键词:AdoptionAdultAffectAge of OnsetBiochemicalBiologicalChronicClinicClinicalColitisCollectionCrohn&aposs diseaseDataDefecationDevelopmentDietDietary HistoryDietary InterventionDietary PracticesDietary QuestionnairesDietary intakeDiseaseDisease remissionEnzymesEuropeanFatty AcidsFecesFoodFrequenciesFutureGenerationsGenesGeneticGenetic PolymorphismGenetic Predisposition to DiseaseGenetic RiskGenetic VariationHemorrhageHeterogeneityHispanic AmericansHispanicsHospitalizationImmuneIncidenceIndividualInflammationInflammatoryInflammatory Bowel DiseasesIntakeIntervention StudiesLeukocyte L1 Antigen ComplexMeasuresMediatingMentorsMetabolicModelingN-3 polyunsaturated fatty acidNot Hispanic or LatinoOmega-3 Fatty AcidsOmega-6 Fatty AcidsParticipantPathway interactionsPatientsPatternPharmaceutical PreparationsPhenotypePolyunsaturated Fatty AcidsPrevalenceProspective StudiesQuestionnairesRecommendationRecurrent diseaseRegression AnalysisRelapseReportingReproducibilityResearchResearch PersonnelResourcesRiskRoleSeedsSeveritiesSeverity of illnessSurveysTestingTimeUlcerative ColitisUniversitiesVariantWorkbasebilingualismcareercohortdesigndietarydisease phenotypefatty acid biosynthesisfatty acid metabolismfollow-upgene environment interactiongenetic associationgenetic variantgenome sequencingindexingmicrobiome researchnovelpopulation basedprogramsrectalrelapse patientsrisk varianttoolwestern dietwhole genome
项目摘要
Summary
Ulcerative colitis (UC) is a devastating immune-mediated disease that is on the rise globally. In our prior study,
we found that Hispanics have less severe disease than non-Hispanics, but yet within one US-born generation
develop a disease course that is similar. Differences in adoption of a Western diet between US- born and
foreign-born Hispanics could explain differences in UC severity observed. A Western diet, high in n-6 to n-3
polyunsaturated fatty acids (PUFA), is up to 10-20 times the recommended intake and is considered pro-
inflammatory. However, heterogeneity of results in dietary intervention studies suggests that underlying genetic
variation in PUFA metabolism may modify diet effects. Our preliminary data indicates that Hispanics with UC
have polymorphisms in PUFA not present in Hispanic controls. In UC, disease activity measured by rectal
bleeding, number of bowel movements, and urgency correlates with endoscopic inflammation. I hypothesize
that Hispanics with UC whose diet follows a higher Western dietary pattern, defined by a reproducible dietary
pattern score, have more active disease, than those whose diet scores are lower. Further, I propose that
carriage of PUFA variants augments the effect of a Western diet on relapse leading to a disproportionate pro-
inflammatory effect of the diet. In this study, I examine the influence of a Western dietary pattern on remission
and relapse of UC among Hispanics (Aim 1). We will test whether PUFA variants influence relapse and
enhance the effect of a Western diet on UC relapse (Aim 2). A total of 320 self- identified, Hispanic participants
with UC are followed at our GI clinics and we will include these for our diet portion in Aim 1. We will include a
total of 691 Hispanics with UC and 900 Hispanic controls for our Aim 2 genetics portion. We have detailed
demographic and clinical information on these patients, as well as whole genome sequencing of PUFA
variants. Participants will be asked to complete a validated food-frequency dietary questionnaire, at baseline
and at 1-year follow up. Disease activity using the validated simple clinical colitis activity index will be assessed
at baseline and at 1 year follow up in combination with fecal calprotectin. We will calculate scores for a
Western dietary pattern and determine the influence of diet on relapse using multivariable regression analysis.
In Aim 2, we will examine the effect of PUFA variants on relapse and also determine gene-environment
interactions influencing disease activity between PUFA variants and Western diet. Results gathered from this
study will be a step towards personalizing IBD treatment by targeting specific dietary patterns in Hispanics with
highest metabolic genetic risk.
概括
溃疡性结肠炎 (UC) 是一种毁灭性的免疫介导疾病,在全球范围内呈上升趋势。 在我们之前的研究中,
我们发现,西班牙裔的疾病比非西班牙裔的严重程度要低,但仍只发生在美国出生的一代人之内
出现类似的病程。 美国出生的人和美国出生的人在采用西方饮食方面的差异
外国出生的西班牙裔可以解释观察到的 UC 严重程度的差异。 西方饮食,富含 n-6 至 n-3
多不饱和脂肪酸 (PUFA) 高达推荐摄入量的 10-20 倍,被认为有利于
炎症。 然而,饮食干预研究结果的异质性表明,潜在的遗传因素
PUFA 代谢的变化可能会改变饮食效果。 我们的初步数据表明,患有 UC 的西班牙裔
具有西班牙裔对照中不存在的 PUFA 多态性。 在 UC 中,通过直肠测量疾病活动度
出血、排便次数和紧迫感与内镜炎症相关。 我假设
患有 UC 的西班牙裔人的饮食遵循更高的西方饮食模式,其定义为可重复的饮食
与饮食得分较低的人相比,模式得分的人患有更多活跃的疾病。 此外,我建议
PUFA 变体的携带增强了西方饮食对复发的影响,导致不成比例的亲
饮食的炎症作用。 在这项研究中,我研究了西方饮食模式对缓解的影响
以及西班牙裔 UC 复发(目标 1)。 我们将测试 PUFA 变异是否会影响复发以及
增强西方饮食对 UC 复发的影响(目标 2)。 共有 320 名自我认定的西班牙裔参与者
UC 在我们的胃肠道诊所进行跟踪,我们将在目标 1 中将这些纳入我们的饮食部分。我们将包括
我们的目标 2 遗传学部分共有 691 名患有 UC 的西班牙裔和 900 名西班牙裔对照。 我们有详细的
这些患者的人口统计和临床信息,以及 PUFA 的全基因组测序
变种。 参与者将被要求在基线时完成一份经过验证的食物频率饮食调查问卷
以及一年后的随访。 将使用经过验证的简单临床结肠炎活动指数评估疾病活动
在基线和 1 年随访时与粪便钙卫蛋白结合使用。 我们将计算以下项目的分数
西方饮食模式并使用多变量回归分析确定饮食对复发的影响。
在目标 2 中,我们将检查 PUFA 变体对复发的影响,并确定基因环境
PUFA 变体和西方饮食之间影响疾病活动的相互作用。 由此收集的结果
这项研究将通过针对西班牙裔人的特定饮食模式,向个性化 IBD 治疗迈出一步
最高的代谢遗传风险。
项目成果
期刊论文数量(0)
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Oriana Mazorra Damas其他文献
Oriana Mazorra Damas的其他文献
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{{ truncateString('Oriana Mazorra Damas', 18)}}的其他基金
The impact of diet patterns and PUFA-related polymorphisms on ulcerative colitis in Hispanics
饮食模式和 PUFA 相关多态性对西班牙裔溃疡性结肠炎的影响
- 批准号:
10852474 - 财政年份:2019
- 资助金额:
$ 18.49万 - 项目类别:
The impact of diet patterns and PUFA-related polymorphisms on ulcerative colitis in Hispanics
饮食模式和 PUFA 相关多态性对西班牙裔溃疡性结肠炎的影响
- 批准号:
10303059 - 财政年份:2019
- 资助金额:
$ 18.49万 - 项目类别:
The impact of diet patterns and PUFA-related polymorphisms on ulcerative colitis in Hispanics
饮食模式和 PUFA 相关多态性对西班牙裔溃疡性结肠炎的影响
- 批准号:
10528451 - 财政年份:2019
- 资助金额:
$ 18.49万 - 项目类别:
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