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:10303059
- 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 OnsetBiochemicalBiologicalChronicClinicClinicalColitisCollectionColonic inflammationCrohn&aposs diseaseDataDefecationDevelopmentDietDietary HistoryDietary InterventionDietary PracticesDietary QuestionnairesDietary intakeDiseaseDisease remissionEnzymesEuropeanFatty AcidsFecesFoodFrequenciesFutureGenerationsGenesGeneticGenetic PolymorphismGenetic Predisposition to DiseaseGenetic RiskGenetic VariationHemorrhageHeterogeneityHispanicHispanic AmericansHispanic PopulationsHospitalizationImmuneIncidenceIndividualInflammationInflammatoryInflammatory 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.
总结
溃疡性结肠炎(UC)是一种毁灭性的免疫系统介导的疾病,在全球范围内呈上升趋势。在我们先前的研究中,
我们发现,西班牙裔美国人比非西班牙裔美国人的疾病严重程度要低,但在美国出生的一代人中,
发展出一种类似的疾病过程。在美国出生的人和在美国出生的人采用西方饮食的差异
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。
多不饱和脂肪酸(PUFA),是推荐摄入量的10- 120倍,被认为是有益的。
然而,饮食干预研究结果的异质性表明,
PUFA代谢的变化可能会改变饮食的影响。我们的初步数据表明,
在西班牙裔对照中不存在PUFA的多态性。在UC中,通过直肠癌检测的疾病活动性
出血、排便次数和尿急与内镜炎症相关。
西班牙裔UC患者的饮食遵循较高的西方饮食模式,由可重复的饮食定义,
与那些饮食得分较低的人相比,模式得分较高的人有更多的活动性疾病。此外,我建议,
携带PUFA变异体增加了西方饮食对导致复发的影响 对一个不成比例的支持者
在这项研究中,我检查了西方饮食模式对缓解的影响。
我们将测试PUFA变体是否影响复发,
增强西方饮食对UC复发的影响(目标2)。共有320名自我鉴定的西班牙裔参与者
在我们的GI诊所进行随访,我们将这些纳入目标1的饮食部分。我们将包括
共有691名西班牙裔UC患者和900名西班牙裔对照,用于我们的目标2遗传学部分。
这些患者的人口统计学和临床信息,以及PUFA的全基因组测序
变体。 参与者将被要求在基线时完成一份经验证的食物摄入频率饮食问卷
将使用经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联合使用。我们将计算
采用多因素回归分析方法,探讨饮食对复发的影响。
在目标2中,我们将检查PUFA变体对复发的影响,并确定基因表达环境。
影响PUFA变体和西方饮食之间疾病活动的相互作用。
这项研究将通过针对西班牙裔美国人的特定饮食模式,
代谢遗传风险最高。
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:
10063510 - 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:
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:
10528451 - 财政年份:2019
- 资助金额:
$ 18.49万 - 项目类别:
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