PMID- 32153783 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220413 IS - 2052-6113 (Print) IS - 2052-6113 (Electronic) IS - 2052-6113 (Linking) VI - 7 IP - 1 DP - 2020 TI - Relationship between expression pattern of vitamin D receptor, 1 alpha-hydroxylase enzyme, and chemokine RANTES genes and selected serum parameters during transition period in Holstein dairy cows. PG - e000339 LID - 10.1136/vetreco-2019-000339 [doi] LID - e000339 AB - OBJECTIVES: The objective of the present study was to evaluate the pattern of genetic expression of vitamin D receptor (VDR), 1 alpha-hydroxylase (1alpha-OHase) enzyme and chemokine regulated on activation normal T-cell expressed and secreted (RANTES) in peripheral blood of Holstein dairy cows during transition period. METHODS: Blood samples were collected from 16 Holstein dairy cows at 3 weeks prior expected date of delivery (EDD), at the day of parturition, and 3 weeks post-partum for assessment of expression profile of studied genes using real-time PCR and measurement of glucose, ionized calcium (Ca), parathyroid hormone (PTH), inorganic phosphorous (P), sodium (Na), potassium (K), chloride (Cl), and magnesium (Mg) levels. RESULTS: Compared with 3 weeks prior EDD, VDR gene expression decreased significantly at the day of parturition then increased significantly at 3 weeks post-partum. The genetic expression of 1alpha-OHase enzyme as well as PTH, K, Na and Cl levels increased significantly at the day of parturition. The Ca level decreased significantly at the day of parturition then increased significantly at 3 weeks post-partum. The P level increased significantly at the day of parturition then decreased significantly at 3 weeks post-partum. Glucose level decreased significantly at the day of parturition and at 3 weeks post-partum. RANTES gene expression showed non-significant changes among the three different time points. The expression of VDR gene had a negative correlation with the expression of 1alpha-OHase enzyme gene, and serum levels of glucose, PTH, P and K, but had a positive correlation with the serum Ca level. The expression of 1alpha-OHase enzyme gene had a positive correlation with serum levels of PTH, P and K, but had a negative correlation with the serum Ca level. CONCLUSIONS: Results of the current study indicate the importance of monitoring the genetic expression of VDR and 1alpha-OHase enzyme as indicators of metabolic changes during transition period, suggesting that they are candidate genes to judge the health status of dairy cows during such period. CI - (c) British Veterinary Association 2020. Re-use permitted under CC BY-NC. No commercial re-use. Published by BMJ. FAU - Saed, Hala A R AU - Saed HAR AD - Department of Internal medicine, Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt. FAU - Ibrahim, Hussam M M AU - Ibrahim HMM AUID- ORCID: 0000-0002-3731-4586 AD - Department of Internal Medicine, Infectious and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt. FAU - El-Khodery, Sabry A AU - El-Khodery SA AUID- ORCID: 0000-0002-0545-5827 AD - Department of Internal Medicine, Infectious and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt. FAU - Youssef, Mohamed A AU - Youssef MA AD - Department of Internal Medicine, Infectious and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt. LA - eng PT - Journal Article DEP - 20200109 PL - United States TA - Vet Rec Open JT - Veterinary record open JID - 101653671 PMC - PMC7045247 OTO - NOTNLM OT - clinical practice OT - dairy cattle OT - internal medicine COIS- Competing interests: The authors have declared that they have no conflict of interest. EDAT- 2020/03/11 06:00 MHDA- 2020/03/11 06:01 PMCR- 2020/01/09 CRDT- 2020/03/11 06:00 PHST- 2019/01/25 00:00 [received] PHST- 2019/11/24 00:00 [revised] PHST- 2019/11/27 00:00 [accepted] PHST- 2020/03/11 06:00 [entrez] PHST- 2020/03/11 06:00 [pubmed] PHST- 2020/03/11 06:01 [medline] PHST- 2020/01/09 00:00 [pmc-release] AID - vetreco-2019-000339 [pii] AID - 10.1136/vetreco-2019-000339 [doi] PST - epublish SO - Vet Rec Open. 2020 Jan 9;7(1):e000339. doi: 10.1136/vetreco-2019-000339. eCollection 2020.