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Secretor Status Is Strongly Associated with Microbial Alterations Observed during Pregnancy

ترتبط حالة الإفراز بشدة بالتغييرات الميكروبية التي لوحظت أثناء الحمل
Authors: Himanshu Kumar; Pirjo Wacklin; Massalin Nakphaichit; Eliisa Löyttyniemi; Somak Chowdhury; Yogesh S. Shouche; Jaana Mättö; +2 Authors

Secretor Status Is Strongly Associated with Microbial Alterations Observed during Pregnancy

Abstract

Pendant la grossesse, il y a des changements significatifs dans la composition et l'activité du microbiote intestinal. L'impact du statut de sécréteur tel que déterminé par le génotypage du gène fut2 (fucosyltransférase 2) a été considéré comme l'un des facteurs de confusion associés aux changements du microbiote fécal pendant la grossesse. Dans cette étude prospective, nous avons suivi des femmes pendant la grossesse (total = 123 dont sécréteurs = 108, non-sécréteurs = 15) et caractérisé leur microbiote intestinal par réaction quantitative en chaîne par polymérase (qPCR), hybridation in situ par fluorescence (FISH), électrophorèse sur gel dégradé dénaturant (DGGE) et pyroséquençage. qPCR a révélé que le nombre de groupes de C. coccoides diminuait significativement chez les non-sécréteurs par rapport aux sécréteurs (p = 0,02). Une tendance similaire a été trouvée par l'analyse FISH dans les groupes Clostridium histolyticum et Lactobacillus-Enterococcus entre les femmes enceintes sécrétrices et non sécrétrices. L'analyse DGGE a montré une diminution significative de la richesse de Clostridium sp. entre les mères sécrétrices et non sécrétrices pendant la grossesse. L'analyse basée sur le pyroséquençage au niveau des phylums a montré une augmentation plus importante des Actinobactéries chez les sécréteurs par rapport aux non-sécréteurs, tandis que les Protéobactéries ont montré une augmentation plus importante des non-sécréteurs. Le changement de l'abondance relative de la famille des Clostridiaceae du premier au troisième trimestre était significativement associé au statut de sécréteur des femmes enceintes (p = 0,05). L'approche polyphasique pour l'analyse du microbiote souligne que le statut de sécréteur de l'hôte (génotype fut2) affecte le microbiote intestinal pendant la grossesse. Cela peut entraîner une modification de la colonisation du microbiote intestinal du nourrisson.

Durante el embarazo hay cambios significativos en la composición y actividad de la microbiota intestinal. El impacto del estado del secretor determinado por el genotipado del gen FUT2 (fucosiltransferasa 2) se tomó como uno de los factores de confusión asociados con los cambios en la microbiota fecal durante el embarazo. En este estudio prospectivo, seguimos a las mujeres durante el embarazo (total = 123 de los cuales secretores = 108, no secretores = 15) y caracterizamos su microbiota intestinal por reacción en cadena de la polimerasa cuantitativa (qPCR), hibridación in situ de fluorescencia (FISH), electroforesis en gel de gradiente desnaturalizante (DGGE) y pirosecuenciación. qPCR reveló que los recuentos de grupos de C. coccoides disminuyeron significativamente en los no secretores en comparación con los secretores (p = 0,02). Se encontró una tendencia similar mediante el análisis FISH en los grupos de Clostridium histolyticum y Lactobacillus-Enterococcus entre las mujeres embarazadas secretoras y no secretoras. El análisis DGGE mostró una disminución significativa en la riqueza de Clostridium sp. entre madres secretoras y no secretoras durante el embarazo. El análisis basado en pirosecuenciación a nivel de filos mostró que hay un mayor aumento de actinobacterias en los secretores en comparación con los no secretores, mientras que las proteobacterias mostraron un mayor aumento en los no secretores. El cambio en la abundancia relativa de la familia Clostridiaceae del primer al tercer trimestre se asoció significativamente con el estado de secretor de las mujeres embarazadas (p = 0.05). El enfoque polifásico para el análisis de la microbiota señala que el estado de secretor del huésped (genotipo FUT2) afecta a la microbiota intestinal durante el embarazo. Esto puede conducir a una alteración de la colonización de la microbiota intestinal infantil.

During pregnancy there are significant changes in gut microbiota composition and activity. The impact of secretor status as determined by genotyping FUT2 (fucosyltransferase 2) gene was taken as one of the confounding factors associated with faecal microbiota changes during pregnancy. In this prospective study, we followed women during pregnancy (total = 123 of which secretors = 108, non-secretors = 15) and characterised their gut microbiota by quantitative polymerase chain reaction (qPCR), Fluorescence In situ Hybridisation (FISH), Denaturing Gradient Gel Electrophoresis (DGGE) and pyrosequencing. qPCR revealed that C. coccoides group counts decreased significantly in non-secretors in comparison to secretors (p = 0.02). Similar tendency was found by FISH analysis in Clostridium histolyticum and Lactobacillus-Enterococcus groups between the secretor and the non-secretor pregnant women. DGGE analysis showed significant decrease in richness of Clostridium sp. between secretor and non-secretor mothers during pregnancy. Pyrosequencing based analysis at phyla level showed that there is greater increase in Actinobacteria in secretors in comparison to non-secretors, whereas Proteobacteria showed more increase in non-secretors. Change in relative abundance of Clostridiaceae family from first to third trimester were significantly associated with secretor status of pregnant women (p = 0.05). Polyphasic approach for microbiota analysis points out that the host secretor status (FUT2 genotype) affects the gut microbiota during pregnancy. This may lead to altered infant gut microbiota colonization.

خلال فترة الحمل، هناك تغييرات كبيرة في تكوين ميكروبات الأمعاء ونشاطها. تم اعتبار تأثير حالة الإفراز على النحو الذي يحدده جين التنميط الجيني FUT2 (fucosyltransferase 2) أحد العوامل المربكة المرتبطة بتغيرات الكائنات الحية الدقيقة البرازية أثناء الحمل. في هذه الدراسة الاستباقية، تابعنا النساء أثناء الحمل (المجموع = 123 من بينها المفرزات = 108، غير المفرزة = 15) وتميزنا بميكروبات الأمعاء من خلال تفاعل البوليميراز المتسلسل الكمي (qPCR)، التهجين الفلوري في الموقع (FISH)، الرحلان الكهربائي للهلام المتدرج (DGGE) والتسلسل الحراري. كشف qPCR أن عدد مجموعة C. coccoides انخفض بشكل ملحوظ في غير المفرزات مقارنة بالمفرزات (p = 0.02). تم العثور على ميل مماثل من خلال تحليل الأسماك في مجموعات Clostridium histolyticum و Lactobacillus - Interococcus بين النساء الحوامل الإفرازات وغير الإفرازات. أظهر تحليل DGGE انخفاضًا كبيرًا في ثراء Clostridium sp. بين الأمهات الإفرازات وغير الإفرازات أثناء الحمل. أظهر التحليل القائم على التسلسل الحراري على مستوى الشعب أن هناك زيادة أكبر في البكتيريا الشعاعية في السرطانات مقارنة بغير السرطانات، في حين أظهرت البكتيريا البروتينية زيادة أكبر في غير السرطانات. ارتبط التغير في الوفرة النسبية لعائلة المطثية من الثلث الأول إلى الثلث الثالث بشكل كبير بالحالة السرية للنساء الحوامل (p = 0.05). يشير النهج متعدد الأطوار لتحليل الكائنات الحية الدقيقة إلى أن حالة إفراز المضيف (النمط الجيني FUT2) تؤثر على الكائنات الحية الدقيقة المعوية أثناء الحمل. قد يؤدي ذلك إلى تغيير استعمار ميكروبات الأمعاء الرضع.

Keywords

Emergency Medical Services, Galactoside 2-alpha-L-fucosyltransferase, Physiology, Health Professions, Prebiotic, FOS: Health sciences, Gene, Feces, Pregnancy, Prospective Studies, Impact of Child Care on Infectious Diseases, In Situ Hybridization, Fluorescence, Temperature gradient gel electrophoresis, Microbiota, Q, R, Life Sciences, Pyrosequencing, Fecal Microbiota Transplantation, Fucosyltransferases, Diversity and Function of Gut Microbiome, Infectious Diseases, Medicine, Electrophoresis, Polyacrylamide Gel, Female, Research Article, 16S ribosomal RNA, Genotyping, Genotype, Science, Immunology, Microbiology, Biochemistry, Genetics and Molecular Biology, Health Sciences, Genetics, Humans, Molecular Biology, Biology, Gut flora, Bacteria, FOS: Clinical medicine, Clostridium difficile Infection and Treatment, ta3123, Lactobacillus, FOS: Biological sciences, Microbiome

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
20
Top 10%
Average
Top 10%
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