Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs

Intestinal microbiota alterations were described in allergic individuals and may improve with diets. Farmina Ultra Hypo (FUH), a hydrolyzed fish/rice starch hypoallergenic diet, is able to improve clinical signs in allergic dogs. Study objectives were to determine microbiota differences in allergic...

Full description

Bibliographic Details
Main Authors: Chiara Noli, Antonella Varina, Caterina Barbieri, Alessandra Pirola, Daniela Olivero
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Veterinary Sciences
Subjects:
Online Access:https://www.mdpi.com/2306-7381/10/7/478
_version_ 1797587267709042688
author Chiara Noli
Antonella Varina
Caterina Barbieri
Alessandra Pirola
Daniela Olivero
author_facet Chiara Noli
Antonella Varina
Caterina Barbieri
Alessandra Pirola
Daniela Olivero
author_sort Chiara Noli
collection DOAJ
description Intestinal microbiota alterations were described in allergic individuals and may improve with diets. Farmina Ultra Hypo (FUH), a hydrolyzed fish/rice starch hypoallergenic diet, is able to improve clinical signs in allergic dogs. Study objectives were to determine microbiota differences in allergic dogs before and after feeding with FUH for eight weeks. Forty skin allergic dogs were evaluated clinically before and after the diet. Unresponsive dogs were classified as canine atopic dermatitis (CAD); responsive dogs relapsing after challenge with previous foods were classified as being food reactive (AFR), and those not relapsing as doubtful (D). Sequencing of feces collected pre- and post-diet was performed, with comparisons between and within groups, pre- and post-diet, and correlations to possible altered metabolic pathways were sought. Microbiota in all dogs was dominated by <i>Bacteroidota</i>, <i>Fusobacteriota</i>, <i>Firmicutes</i> and <i>Proteobacteria</i>, albeit with large interindividual variations and with some prevalence changes after the diet. In general, bacteria producing short-chain fatty acids were increased in all samples. CAD dogs showed pre-and post-diet microbiota patterns different from the other two groups. Bacteria taxa were enriched post-diet only in the AFR group. Changes in metabolic pathways were observed mainly in the CAD group. FUH may be able to improve intestinal microbiota and thus clinical signs of skin allergy.
first_indexed 2024-03-11T00:34:43Z
format Article
id doaj.art-e93ac31d0c6f41828ee848c2b9d4e2c9
institution Directory Open Access Journal
issn 2306-7381
language English
last_indexed 2024-03-11T00:34:43Z
publishDate 2023-07-01
publisher MDPI AG
record_format Article
series Veterinary Sciences
spelling doaj.art-e93ac31d0c6f41828ee848c2b9d4e2c92023-11-18T21:43:11ZengMDPI AGVeterinary Sciences2306-73812023-07-0110747810.3390/vetsci10070478Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic DogsChiara Noli0Antonella Varina1Caterina Barbieri2Alessandra Pirola3Daniela Olivero4Servizi Dermatologici Veterinari, Strada Bedale della Ressia 2, 12016 Peveragno, ItalyAmbulatorio Veterinario Varina-Ghidella-Scarfone, Via Fréjus 54, 10139 Torino, ItalyGalSeq s.r.l., Via Ludovico Ariosto 21, 20091 Bresso, ItalyGalSeq s.r.l., Via Ludovico Ariosto 21, 20091 Bresso, ItalyLaboratorio Analisi Veterinarie BiEsseA Scilvet, Via Amedeo d’Aosta 7, 20129 Milano, ItalyIntestinal microbiota alterations were described in allergic individuals and may improve with diets. Farmina Ultra Hypo (FUH), a hydrolyzed fish/rice starch hypoallergenic diet, is able to improve clinical signs in allergic dogs. Study objectives were to determine microbiota differences in allergic dogs before and after feeding with FUH for eight weeks. Forty skin allergic dogs were evaluated clinically before and after the diet. Unresponsive dogs were classified as canine atopic dermatitis (CAD); responsive dogs relapsing after challenge with previous foods were classified as being food reactive (AFR), and those not relapsing as doubtful (D). Sequencing of feces collected pre- and post-diet was performed, with comparisons between and within groups, pre- and post-diet, and correlations to possible altered metabolic pathways were sought. Microbiota in all dogs was dominated by <i>Bacteroidota</i>, <i>Fusobacteriota</i>, <i>Firmicutes</i> and <i>Proteobacteria</i>, albeit with large interindividual variations and with some prevalence changes after the diet. In general, bacteria producing short-chain fatty acids were increased in all samples. CAD dogs showed pre-and post-diet microbiota patterns different from the other two groups. Bacteria taxa were enriched post-diet only in the AFR group. Changes in metabolic pathways were observed mainly in the CAD group. FUH may be able to improve intestinal microbiota and thus clinical signs of skin allergy.https://www.mdpi.com/2306-7381/10/7/478dogallergic dermatitisfood allergypruritusskincanine atopic dermatitis
spellingShingle Chiara Noli
Antonella Varina
Caterina Barbieri
Alessandra Pirola
Daniela Olivero
Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs
Veterinary Sciences
dog
allergic dermatitis
food allergy
pruritus
skin
canine atopic dermatitis
title Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs
title_full Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs
title_fullStr Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs
title_full_unstemmed Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs
title_short Analysis of Intestinal Microbiota and Metabolic Pathways before and after a 2-Month-Long Hydrolyzed Fish and Rice Starch Hypoallergenic Diet Trial in Pruritic Dogs
title_sort analysis of intestinal microbiota and metabolic pathways before and after a 2 month long hydrolyzed fish and rice starch hypoallergenic diet trial in pruritic dogs
topic dog
allergic dermatitis
food allergy
pruritus
skin
canine atopic dermatitis
url https://www.mdpi.com/2306-7381/10/7/478
work_keys_str_mv AT chiaranoli analysisofintestinalmicrobiotaandmetabolicpathwaysbeforeandaftera2monthlonghydrolyzedfishandricestarchhypoallergenicdiettrialinpruriticdogs
AT antonellavarina analysisofintestinalmicrobiotaandmetabolicpathwaysbeforeandaftera2monthlonghydrolyzedfishandricestarchhypoallergenicdiettrialinpruriticdogs
AT caterinabarbieri analysisofintestinalmicrobiotaandmetabolicpathwaysbeforeandaftera2monthlonghydrolyzedfishandricestarchhypoallergenicdiettrialinpruriticdogs
AT alessandrapirola analysisofintestinalmicrobiotaandmetabolicpathwaysbeforeandaftera2monthlonghydrolyzedfishandricestarchhypoallergenicdiettrialinpruriticdogs
AT danielaolivero analysisofintestinalmicrobiotaandmetabolicpathwaysbeforeandaftera2monthlonghydrolyzedfishandricestarchhypoallergenicdiettrialinpruriticdogs