| Abstract | PURPOSE: To evaluate the morphological changes in murine cornea upon metoclopramide-induced hyperprolactinemia during the proestrous phase or pregnancy. METHODS: Forty adult mice were divided into two groups: (control) CTR1 and (treated with metoclopramide (MET1). After fifty days, half of the mice were sacrificed. The remaining animals were mated, and then labeled as pregnant controls (CTR2). Part of these animals were treated with metoclopramide and constituted the metoclopramide-treated pregnant (MET2) group. The groups CTR2 and MET2 were sacrificed on the 6th day of pregnancy. The hormonal levels were assessed by chemioluminescence and radioimmunoassay methods and the cornea was removed for the histomorphometric study. RESULTS: The epithelial, stromal, endothelial and total thickness in the experimental group was: MET1 and MET2 were higher than one in the control group: CTR1 and CTR2. There was a significant reduction of the hormonal level in the animals that received metoclopramide as compared to controls (CTR1: estradiol = 156.6 +/- 42.2 pg/ml; progesterone = 39.4 +/- 5.1 ng/ml; prolactin = 130.4 +/- 26.2 ng/ml; MET1: estradiol = 108.0 +/- 33.1 pg/ml; progesterone = 28.0 +/- 6.4 ng/ml; prolactin = 551.5 +/- 23.3 ng/ml; CTR2: estradiol = 354.0 +/- 56.0 pg/ml; progesterone = 251.0 +/- 56.0 ng/ml; prolactin = 423.2 +/- 28.1 ng/ml; MET2: estradiol = 293.0 +/- 43.0 pg/ml; progesterone = 184.0 +/- 33.0 ng/ml; prolactin = 823.1 +/- 51.1 ng/ml). CONCLUSION: The metoclopramide-induced hyperprolactinemia may increase corneal layers, mainly in pregnant mice. Possibly, this effect is related to reduction in estrogen and progesterone production. |
| Authors | Carina Verna, José Maria Júnior Soares, Fernanda Watanabe Martins, Regina Célia Teixeira, Rejane Mosquette, Ricardo Santos Simões, Manuel de Jesus Simões, Edmund Chada Baracat
(Affiliation: Departamento de Ginecologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil.)
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| Journal | Arquivos brasileiros de oftalmologia
(Arq Bras Oftalmol)
2006 Sep-Oct
Vol. 69
Issue 5
Pg. 645-9
ISSN: 0004-2749 Brazil |
| Vernacular Title | Efeito da hiperprolactinemia induzida pela metoclopramida na córnea de camundongas. |
| PMID | 17187127
(Publication Type: English Abstract, Journal Article)
|
| Chemical References |
- Dopamine Antagonists
- Gonadal Hormones
- Metoclopramide
- Estradiol
- Progesterone
- Prolactin
|
| Topics |
- Animals
- Aqueous Humor
- Cornea
(drug effects, pathology)
- Disease Models, Animal
- Dopamine Antagonists
(toxicity)
- Estradiol
(blood)
- Female
- Gonadal Hormones
(blood)
- Histocytochemistry
- Hyperprolactinemia
(chemically induced, pathology)
- Image Processing, Computer-Assisted
- Metoclopramide
(toxicity)
- Mice
- Pregnancy
- Proestrus
(drug effects)
- Progesterone
(blood)
- Prolactin
(blood)
|
