scholarly journals 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

2020 ◽  
Vol 7 (1) ◽  
pp. e000339
Author(s):  
Hala A R Saed ◽  
Hussam M M Ibrahim ◽  
Sabry A El-Khodery ◽  
Mohamed A Youssef
Keyword(s):  
Gene Expression ◽  
Vitamin D ◽  
Dairy Cows ◽  
Transition Period ◽  
Post Partum ◽  
Serum Levels ◽  
Vdr Gene ◽  
Genetic Expression ◽  
Enzyme Gene ◽  
Holstein Dairy Cows

ObjectivesThe objective of the present study was to evaluate the pattern of genetic expression of vitamin D receptor (VDR), 1 alpha-hydroxylase (1α-OHase) enzyme and chemokine regulated on activation normal T-cell expressed and secreted (RANTES) in peripheral blood of Holstein dairy cows during transition period.MethodsBlood 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.ResultsCompared 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 1α-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 1α-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 1α-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.ConclusionsResults of the current study indicate the importance of monitoring the genetic expression of VDR and 1α-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.

scholarly journals Allelic variations in coding regions of the vitamin D receptor gene in dairy cows and potential susceptibility to periparturient hypocalcaemia

2012 ◽  
Vol 79 (4) ◽  
pp. 423-428 ◽  
Author(s):  
Carolin Deiner ◽  
Maria Reiche ◽  
Dirk Lassner ◽  
Desirée Grienitz ◽  
Sven Twardziok ◽  
...  
Keyword(s):  
Vitamin D ◽  
Dairy Cows ◽  
Vitamin D Receptor ◽  
Bos Taurus ◽  
Post Partum ◽  
Receptor Gene ◽  
Vdr Gene ◽  
Coding Regions ◽  
Vdr Gene Polymorphisms ◽  
Clinical Records

Periparturient hypocalcaemia (milk fever) is a disorder of Ca metabolism in dairy cattle primarily affecting multiparous cows. The major reasons for the rapid decrease of blood Ca concentration after calving are the prompt increase of Ca secretion into the colostrum and the delayed activation of Ca regulation mechanisms including calcitriol, a metabolite of vitamin D. In man, vitamin D receptor (VDR) gene polymorphisms are reported to be associated with disturbances of Ca metabolism, whereas data confirming the same in dairy cows are still missing. Moreover, polymorphisms that only affect non-coding regions are sometimes difficult to ascribe to a specific disorder as pathways and unequivocal links remain elusive. Therefore, the idea of the present study was to investigate in a small group of dairy cows with documented clinical records whether polymorphisms in the coding regions of the VDR gene existed and whether these potentially found variations were correlated with the incidence of periparturient hypocalcaemia. For this purpose, blood DNA was isolated from 26 dairy cows in their 4th to 6th lactation, out of which 17 had experienced hypocalcaemia at least once, whereas 9 cows had never undergone periparturient hypocalcaemia in their lifetime. The 10 VDR exons and small parts of adjacent introns were sequenced and compared with the Bos taurus VDR sequence published on NCBI based on the DNA of one Hereford cow. In total, 8 sequence alterations were detected in the fragments, which were primarily heterozygous. However, only 4 of them were really located on exons thereby potentially causing changes of the encoded amino acid of the VDR protein, but were not correlated with the incidence of periparturient hypocalcaemia. Certainly, this lack of statistical correlation could be due to the small number of animals included; anyhow, it was not encouraging enough to initiate a larger study with hundreds of cows and document blood Ca levels post partum for at least four lactations.

scholarly journals Serum proteinogram and biochemistry of Holstein cows in the peripartum period

2019 ◽  
Vol 39 (5) ◽  
pp. 342-347
Author(s):  
Thaís G. Rocha ◽  
Camila Bortoletto ◽  
Daniela G. Silva ◽  
Kalina M.M.G. Simplício ◽  
Luiz F. Zafalon ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Dairy Cows ◽  
Total Protein ◽  
Repeated Measures ◽  
Transition Period ◽  
Serum Levels ◽  
Inorganic Phosphorus ◽  
Holstein Cows ◽  
Total Calcium ◽  
Peripartum Period

ABSTRACT: In face of the few reports found in national literature analyzing the potential influence of parturition number in serum proteinogram and biochemical profile in the peripartum period of high yielding dairy cows, the aim of the present study was to comparatively evaluate the dynamics of these serum constituents’ concentrations in blood samples obtained from primiparous and multiparous Holstein cows, 60 and 30 days prepartum and in the day of parturition. Data were analyzed by repeated measures variance analysis (ANOVA) and differences between groups and moments were analyzed by Tukey’s test. Results were considered significant when P<0.05. Parity influenced levels of total protein, albumin, globulins, magnesium, cholesterol, which were higher in multiparous cows, as well as concentrations of ceruloplasmin, total calcium, chloride and alkaline phosphatase activity, which were higher in primiparous cows. Parturition influenced serum concentrations of ceruloplasmin (+58%), transferrin (-25%), haptoglobin (+33%), total protein (-17%), globulins (-25%), immunoglobulin A (-43%), immunoglobulin G (-24%), total calcium (-12%), inorganic phosphorus (-10%), chloride (+5%), sodium (+4%), cholesterol (-23%), triglycerides (-38.6%), as well as activities of aspartate aminotransferase (+14%) and alkaline phosphatase (+28%). A decrease in serum levels of total calcium, inorganic phosphorus, cholesterol and triglycerides was more pronounced in multiparous than in primiparous cows. These results demonstrate that the interpretation of proteinogram and serum constituents should take into consideration lactation number and the moment of parturition as relevant factors in high yielding dairy cows in the transition period.

Functional characterization of WT1 binding sites within the human vitamin D receptor gene promoter

2001 ◽  
Vol 7 (2) ◽  
pp. 187-200 ◽  
Author(s):  
TAE HO LEE ◽  
JERRY PELLETIER
Keyword(s):  
Gene Expression ◽  
Vitamin D ◽  
Transcription Factor ◽  
Vitamin D Receptor ◽  
Binding Sites ◽  
Wilms Tumor ◽  
Cdna Array ◽  
Transcriptional Level ◽  
Vdr Gene ◽  
Downstream Target

The Wilms’ tumor suppressor gene, wt1, encodes a zinc finger transcription factor that can regulate gene expression. It plays an essential role in tumorigenesis, kidney differentiation, and urogenital development. To identify WT1 downstream targets, gene expression profiling was conducted using a cDNA array hybridization approach. We confirm herein that the human vitamin D receptor (VDR), a ligand-activated transcription factor, is a WT1 downstream target. Nuclear run on experiments demonstrated that the effect of WT1 on VDR expression is at the transcriptional level. Transient transfection assays, deletion mutagenesis, electrophoretic mobility shift assays, and chromatin immunoprecipitation assays suggest that, although WT1 is presented with a possibility of three binding sites within the VDR promoter, activation of the human VDR gene appears to occur through a single site. This site differs from a previously identified WT1-responsive site in the murine VDR promoter (Maurer U, Jehan F, Englert C, Hübinger G, Weidmann E, DeLucas HF, and Bergmann L. J Biol Chem 276: 3727–3732, 2001). We also show that the products of a Denys-Drash syndrome allele of wt1 inhibit WT1-mediated transactivation of the human VDR promoter. Our results indicate that the human VDR gene is a downstream target of WT1 and may be regulated differently than its murine counterpart.

scholarly journals The role of rumen-protected choline in hepatic function and performance of transition dairy cows

2016 ◽  
Vol 116 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Arash Shahsavari ◽  
Michael J. D’Occhio ◽  
Rafat Al Jassim
Keyword(s):  
Gene Expression ◽  
Fatty Acids ◽  
Dairy Cows ◽  
Milk Production ◽  
Transition Period ◽  
Hepatic Function ◽  
Negative Energy ◽  
Liver Fat ◽  
Economic Losses ◽  
Negative Effects

AbstractHigh-producing dairy cows enter a period of negative energy balance during the first weeks of lactation. Energy intake is usually sufficient to cover the increase in energy requirements for fetal growth during the period before calving, but meeting the demand for energy is often difficult during the early stages of lactation. A catabolic state predominates during the transition period, leading to the mobilisation of energy reserves (NEFA and amino acids) that are utilised mainly by the liver and muscle. Increased uptake of mobilised NEFA by the liver, combined with the limited capacity of hepatocytes to either oxidise fatty acids for energy or to incorporate esterified fatty acids into VLDL results in fatty liver syndrome and ketosis. This metabolic disturbance can affect the general health, and it causes economic losses. Different nutritional strategies have been used to restrict negative effects associated with the energy challenge in transition cows. The provision of choline in the form of rumen-protected choline (RPC) can potentially improve liver function by increasing VLDL exportation from the liver. RPC increases gene expression of microsomal TAG transfer protein and APOB100 that are required for VLDL synthesis and secretion. Studies with RPC have looked at gene expression, metabolic hormones, metabolite profiles, milk production and postpartum reproduction. A reduction in liver fat and enhanced milk production has been observed with RPC supplementation. However, the effects of RPC on health and reproduction are equivocal, which could reflect the lack of sufficient dose–response studies.

scholarly journals Daily Soy–Catfish–Anchovy–Rice (SCAR) Porridge Increases 25(OH)D Serum Levels in Tuberculosis Patients with Vitamin D Receptor Gene Polymorphisms

2021 ◽  
Vol 13 (4) ◽  
pp. 418-25
Author(s):  
Dina Keumala Sari ◽  
Ridha Dharmajaya ◽  
Mutiara Indah Sari ◽  
Dewi Masyithah Darlan
Keyword(s):  
Vitamin D ◽  
Blood Glucose ◽  
Vitamin D Receptor ◽  
Gene Polymorphisms ◽  
Serum Levels ◽  
Vdr Gene ◽  
Dietary Counseling ◽  
Tuberculosis Patients ◽  
Vdr Gene Polymorphisms ◽  
Hs Crp

BACKGROUND: The presence of vitamin D receptor (VDR) polymorphism and high levels of inflammatory markers are predisposing factors indicating disease progression and malnutrition. To meet nutritional needs in maintaining nutritional status in tuberculosis patients with VDR gene polymorphisms (TaqI or FokI), food that is easily absorbed and high in vitamin D, calcium, and protein is needed. This study was conducted to determine whether high vitamin D and calcium porridge called soy–catfish–anchovy–rice (SCAR) porridge would increase 25(OH)D serum levels and other parameters, including calcium, albumin, high-sensivity C-reactive protein (hs-CRP), and blood glucose serum levels.METHODS: The study was a parallel, open, clinical trial. There were 22 subjects in the intervention (I) group who received 50 g of SCAR porridge once per day along with dietary counseling, and 21 subjects in the control (C) group who only received dietary counseling. All subjects with TC and CC (TaqI) or TC and CC (FokI) genotype were included in this study. The intervention lasted for 14 days, and the parameters such as 25(OH)D, calcium, albumin, hs-CRP, and blood glucose serum levels were assessed before and after intervention between groups.RESULTS: All subjects in both groups completed the study. After 14 days of intervention, there was a significant increase in 25(OH)D (p=0.01) and decrease in hs-CRP (p=0.02) serum levels in the I group, and no change was observed in the C group. There was no significant difference in albumin and blood glucose serum levels.CONCLUSION: The results show that 50 g of SCAR porridge per day for 14 days is an effective supplementation that can increase 25(OH)D and decrease hs-CRP serum levels in tuberculosis patients with VDR gene polymorphism.KEYWORDS: vitamin D, hs-CRP, polymorphism, porridge

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