Significance of Duodenal Prolactin Receptor Modulation by Calcium and Vitamin D in Sulpiride-Induced Hyperprolactinemia.
Medicina (Kaunas)
; 60(6)2024 Jun 04.
Article
in En
| MEDLINE
| ID: mdl-38929559
ABSTRACT
Background and Objectives:
Hyperprolactinemia, as a potential side-effect of some antipsychotic medications, is associated with decreased bone density and an increased risk of fractures. This study investigates whether calcium and vitamin D supplementation affects prolactin receptor (Prlr) gene expression in the duodenum, vertebrae, and kidneys of female rats with sulpiride-induced hyperprolactinemia. Materials andMethods:
Twenty-one-week-old female Wistar rats were assigned to three groups Group S consisted of ten rats who received sulpiride injections (10 mg/kg) twice daily for 6 weeks; Group D (10 rats) received daily supplementation of 50 mg calcium and 500 IU vitamin D along with sulpiride for the last 3 weeks; and Group C consisting of seven age-matched nulliparous rats serving as a control group. Real-time PCR was used to assess Prlr gene expression in the duodenum, vertebrae, and kidneys.Results:
In Group S, Prlr gene expression was notably decreased in the duodenum (p < 0.01) but elevated in the vertebrae and kidneys compared to Group C. Conversely, Group D exhibited significantly increased Prlr expression in the duodenum (p < 0.01) alongside elevated expression in the vertebrae and kidneys.Conclusions:
In sulpiride-induced hyperprolactinemia, decreased Prlr gene expression in the duodenum may lead to reduced intestinal calcium absorption. Consequently, prolactin may draw calcium from the skeletal system to maintain calcium balance, facilitated by increased Prlr gene expression in the vertebrae. However, vitamin D supplementation in sulpiride-induced hyperprolactinemia notably enhances Prlr gene expression in the duodenum, potentially ameliorating intestinal calcium absorption and mitigating adverse effects on bone health.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Sulpiride
/
Vitamin D
/
Receptors, Prolactin
/
Hyperprolactinemia
/
Calcium
/
Duodenum
Limits:
Animals
Language:
En
Journal:
Medicina (Kaunas)
/
Medicina (Kaunas. Online)
Journal subject:
MEDICINA
Year:
2024
Document type:
Article
Country of publication:
Switzerland