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Inguinal Ring RNA Sequencing Reveals Downregulation of Muscular Genes Related to Scrotal Hernia in Pigs

Programa de Pós-Graduação em Zootecnia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500-Ondina, Salvador 40170-110, Bahia, Brazil
Embrapa Suínos e Aves, Concórdia, Rodovia BR-153, Km 110, Distrito de Tamanduá, 321, Santa Catarina 89715-899, Brazil
Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Alameda Élio Antonio Dalla Vecchia, 838-Vila Carli, Guarapuava 85040-167, Paraná, Brazil
Programa de Pós-Graduação em Zootecnia, UDESC-Oeste, Rua Beloni Trombeta Zanin 680E-Bairro Santo Antônio, Chapecó 89815-630, SC, Brazil
BRF SA, Curitiba, PR. Present address: Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Rodovia RS-135, KM 25-Distrito Eng. Luiz, Sertão 99170-000, RS, Brazil
Departamento de Zootecnia, Setor de Ciências Agrárias e Tecnologia, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748-Uvaranas, Ponta Grossa 84030-900, Paraná, Brazil
Departamento de Zootecnia, Escola Superior de Agricultura Luiz de Queiroz (ESALQ), Universidade de São Paulo, ESALQ/USP, Av. Pádua Dias, 11, Piracicaba 13418-900, São Paulo, Brazil
Author to whom correspondence should be addressed.
Received: 12 December 2019 / Revised: 14 January 2020 / Accepted: 15 January 2020 / Published: 21 January 2020
(This article belongs to the Section Animal Genetics and Genomics)
Scrotal hernias (SH) are common congenital defects in commercial pigs, characterized by the presence of abdominal contents in the scrotal sac, leading to considerable production and animal welfare losses. Since the etiology of SH remains obscure, we aimed to identify the biological and genetic mechanisms involved in its occurrence through the whole transcriptome analysis of SH affected and unaffected pigs’ inguinal rings. From the 22,452 genes annotated in the pig reference genome, 13,498 were expressed in the inguinal canal tissue. Of those, 703 genes were differentially expressed (DE, FDR < 0.05) between the two groups analyzed being, respectively, 209 genes upregulated and 494 downregulated in the SH-affected group. Thirty-seven significantly overrepresented GO terms related to SH were enriched, and the most relevant biological processes were muscular system, cell differentiation, sarcome reorganization, and myofibril assembly. The calcium signaling, hypertrophic cardiomyopathy, dilated cardiomyopathy, and cardiac muscle contraction were the major pathways possibly involved in the occurrence of the scrotal hernias. The expression profile of the DE genes was associated with the reduction of smooth muscle differentiation, followed by low calcium content in the cell, which could lead to a decreased apoptosis ratio and diminished muscle contraction of the inguinal canal region. We have demonstrated that genes involved with musculature are closely linked to the physiological imbalance predisposing to scrotal hernia. According to our study, the genes MYBPC1, BOK, SLC25A4, SLC8A3, DES, TPM2, MAP1CL3C, and FGF1 were considered strong candidates for future evaluation. View Full-Text
Keywords: transcriptome; congenital disease; differentially expressed genes transcriptome; congenital disease; differentially expressed genes
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MDPI and ACS Style

Romano, G.d.S.; Ibelli, A.M.G.; Lorenzetti, W.R.; Weber, T.; Peixoto, J.d.O.; Cantão, M.E.; Mores, M.A.Z.; Morés, N.; Pedrosa, V.B.; Coutinho, L.L.; Ledur, M.C. Inguinal Ring RNA Sequencing Reveals Downregulation of Muscular Genes Related to Scrotal Hernia in Pigs. Genes 2020, 11, 117.

AMA Style

Romano GdS, Ibelli AMG, Lorenzetti WR, Weber T, Peixoto JdO, Cantão ME, Mores MAZ, Morés N, Pedrosa VB, Coutinho LL, Ledur MC. Inguinal Ring RNA Sequencing Reveals Downregulation of Muscular Genes Related to Scrotal Hernia in Pigs. Genes. 2020; 11(2):117.

Chicago/Turabian Style

Romano, Gabrieli d.S., Adriana M.G. Ibelli, William R. Lorenzetti, Tomás Weber, Jane d.O. Peixoto, Mauricio E. Cantão, Marcos A.Z. Mores, Nelson Morés, Victor B. Pedrosa, Luiz L. Coutinho, and Mônica C. Ledur 2020. "Inguinal Ring RNA Sequencing Reveals Downregulation of Muscular Genes Related to Scrotal Hernia in Pigs" Genes 11, no. 2: 117.

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