Evaluation of 25-hydroxy-vitamin D and parathyroid hormone in Callithrix penicillata primates living in their natural habitat in Brazil.
BACKGROUND
Vitamin D is a secosteroid hormone with important roles in the control of bone and mineral metabolism of vertebrates and in the maintenance of systemic homeostasis. This study aimed (i) to evaluate the serum concentrations of 25-hydroxy-vitamin D levels [25(OH)D], parathyroid hormone (PTH) and ionized calcium (iCa) of wild Callithrix penicillata (black-tufted marmosets) and (ii) to propose reference ranges for those analytes for free-living marmosets.


METHODS
Blood samples were collected from 15 wild animals and analyzed for 25(OH)D, PTH and iCa. Reference values were calculated following standard analytical criteria.


RESULTS
The observed mean serum levels (±standard deviation) were 25(OH)D, 61.7 (±20.8) ng/ml; PTH, 275.2 (±34.1) pg/ml; iCai 4.0 (±0.6) mg/dl.


CONCLUSIONS
For free-living marmosets, the proposed physiological range for 25(OH)D is 20.1-103.3 ng/ml and for PTH is 207.0-343.3 pg/dl, with a confidence interval of 95%.
Primatology Center, Institute of Biology, University of Brasilia, Brasilia, Brazil.
Danilo Simonini
DS
Teixeira
Yanna Karla M
YK
Nobrega
Carlos Enrique Uribe
CE
Valencia
Lenora
L
Gandolfi
Riccardo
R
Pratesi
Luiz Claudio G
LC
Castro
D000818:Animals; D001938:Brazil; D002118:Calcium / Q000097:blood*; D002144:Callithrix / Q000097:blood*; D017753:Ecosystem; D005260:Female; D008297:Male; D010281:Parathyroid Hormone / Q000097:blood*; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood
D010281:Parathyroid Hormone; D014807:Vitamin D; C104450:25-hydroxyvitamin D; D002118:Calcium