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Abstract

Bovine endometritis has become a persistent issue in the global dairy business, resulting in huge economic losses. Due to their numerous positive benefits, Chinese herbal medicines (CHMs) have recently demonstrated remarkable pharmacological potential against endometritis. The objective of this study was to investigate the effects and elucidate the underlying mechanisms of the Yimucao formula (YMF) that involves five herbs in lactation cows under endometritis conditions. Initially, the possible impacts of YMF on cows with endometritis were assessed. Then, using network pharmacology, potential molecular processes by which the YMF prevents endometritis were suggested. The findings demonstrated a considerable improvement in endometritis- related clinical complaints following YMF treatment. Mechanically, 150 active compounds were identified from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP); of these, quercetin, kaempferol, beta-sitosterol, apigenin, isorhamnetin, and sitogluside were the most prevalent active substances. The NCBI gene, GeneCard, and OMIM databases had 110 genes linked to endometritis. The intersection of these targets with the 213 active ingredient targets produced 17 common targets, of which BCL2, IL-6, MMP9, HIF1α, TNF, IL-1β, and ICAM1 were the top 7 core targets. According to the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment data, atherosclerosis, fluid shear stress, and the AGE-RAGE signaling pathway are the primary causes of YMF’s anti-endometritis action. Finally, our results indicate that the YMF works on endometritis through various and multi-targeted signaling pathways, which provide reference for clinical practice, based on network pharmacology and molecular docking.
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Authors and Affiliations

Q. Li
1
Zh. Cao
1
X. Ling
1
P. Sun
1
W. Yin
1
K. Fan
2
N. Sun
1
H. Li
1

  1. Shanxi Key Lab. for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, China
  2. Laboratory Animal Center, Shanxi Agricultural University, Taigu 030801, Shanxi, China
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Abstract

In this study, a SYBR Green-based real-time quantitative polymerase chain reaction (qPCR) assay was developed for rapid detection of porcine parvovirus (PPV) 6. Primer pairs targeting the conserved regions of PPV6 Capsid gene were designed. Sensitivity analyses revealed the lowest detection limit of the SYBR Green-based real-time PCR assay to be 47.8 copies/μL, which indicated it was 1000 times higher than that found in the conventional PCR investigations. This assay was specific and showed no cross-species amplification with other six porcine viruses. The assay demonstrated high repeatability and reproducibility; the intra- and inter-assay coefficients of variation were 0.79% and 0.42%, respectively. The positive detection rates of 180 clinical samples with SYBR Green-based real-time PCR and conventional PCR were 12.22% (22/180) and 4.44% (8/180), respectively. Our method is sensitive, specific, and reproducible. The use of SYBR Green-based real-time PCR may be suitable for the clinical detection and epidemiological investigation of PPV6.

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Authors and Affiliations

P. Sun
C.X. Bai
D. Zhang
J. Wang
K.K. Yang
B.Z. Cheng
Y.D. Li
Y. Wang
ORCID: ORCID
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Abstract

In this study, we developed a SYBR Green I real-time PCR method for the rapid and sensitive detection of novel porcine parvovirus 7 (PPV7). Specific primers were designed based on the highly conserved region within the Capsid gene of PPV7. The established method was 1,000 times more sensitive than the conventional PCR method and had a detection limit of 35.6 copies. This method was specific and had no cross-reactions with PCV2, PCV3, PRV, PEDV, PPV1, and PPV6. Experiments testing the intra and interassay precision demonstrated a high reproducibility. Testing the newly established method with 200 clinical samples revealed a detection rate up to 17.5% higher than that of the conventional PCR assay. The established method could provide technical support for clinical diagnosis and epidemiological investigation of PPV7.
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Authors and Affiliations

Y.D. Li
1
Z.D. Yu
2
C.X. Bai
2
D. Zhang
2
P. Sun
2
M.L Peng
2
H. Liu
3
ORCID: ORCID
J. Wang
4
Y. Wang
2
ORCID: ORCID

  1. Municipal Key Laboratory of Virology, Ningbo Municipal Center for Disease Control and Prevention, Ningbo 315010, PR China
  2. Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, PR China
  3. Anhui Animal Diseases Prevention and Control Center and Key Laboratory of Veterinary Pathobiology and Disease Prevention and Control of Anhui Province, Hefei 230091, PR China
  4. Animal Husbandry Base Teaching and Research Section, College of Animal Science and Technology, Hebei North University, Hebei 075000, PR China

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