BackgroundThis study aimed to detect changes in hormone levels in the hypothalamic–pituitary–ovarian axis in Sprague-Dawley (SD) rats with hypothyroidism, and identify differences in the pregnancy and abortion rates of female adult rats. The potential role of gonadotropin releasing hormone (GnRH) as the link between the hypothalamic–pituitary–ovarian axis and reproductive function regulated by thyroid hormones was also investigated.MethodsFemale SD rats (n = 136) were causally classified into two groups: the normal-drinking-water group (n = 60) and the 0.05% propylthiouracil-drinking-water group (PTU 2 mg/kg/day, n = 76) to establish an adult rat model of hypothyroidism (6 weeks). Female and male rats at a ratio of 1:2 were used to establish a hypothyroidism pregnancy model. GnRH mRNA and GnRH receptor (GnRHR) expression in rats was detected using real time quantitative PCR(qRT-PCR) and immunohistochemistry, respectively.ResultsThe abortion rate differed significantly between the hypothyroidism pregnancy group and the normal pregnancy group (P < 0.05). No significant differences were found in the distribution of the GnRHR among the five nuclei (hypothalamic arcuate nucleus, hypothalamic ventromedial nucleus, hypothalamic anterior nucleus, paraventricular nucleus of the hypothalamus, and ventral premammillary nucleus) of the hypothalamus and ovary (P > 0.05). Hypothyroidism had no significant effect on GnRH mRNA expression in the hypothalamic–pituitary–ovarian axis in the four groups (normal control group, normal pregnancy group, hypothyroidism pregnancy group, and hypothyroidism group) (P > 0.05).ConclusionsHypothyroidism had an adverse impact on pregnancy in rats and may affect the distribution of pituitary GnRHR, whereas it did not obviously affect the distribution of GnRHR in the nuclei of the hypothalamus and ovary. Hypothyroidism had no effect on GnRH mRNA expression.Electronic supplementary materialThe online version of this article (10.1186/s12902-018-0258-y) contains supplementary material, which is available to authorized users.
Objective: To investigate how omentin-1 impacts colorectal cancer stem cell surface markers and the expression levels of tumour-suppressive micro ribonucleic acid in a colorectal cancer-associated high-glucose environment.
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BACKGROUNDParathyroid adenoma (PTA) is known as an adenomatous hyperparathyroidism syndrome. At earlier times, the major symptoms of this disease included high blood calcium and low phosphorus. PTA is a benign neuroendocrine neoplasm. We have reviewed the literature and found that it is rare for patients with hyperparathyroidism to have benign tumors with multiple organs at the same time. This report describes a patient with a PTA and four nonfunctional adenomas.CASE SUMMARYWe report a case of primary hyperparathyroidism in a 39-year-old woman with multiple organ tumors. The patient was admitted to hospital because of hypercalcemia. Laboratory, imaging, and histological examinations confirmed a left parathyroid neoplasm. Right thyroid adenoma was discovered during hospitalization. She had a medical history of uterine fibroids, right benign mammary gland tumor, and meningioma. The patient recovered after surgical and conservative treatments.CONCLUSIONPrimary hyperparathyroidism with multiple organ tumors is uncommon, and further studies should be conducted to determine if there is genetic heterogeneity.
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