A5102920192- Thyroid Disorders and Treatments
- Growth Hormone and Insulin-like Growth Factors
- Neuropeptides and Animal Physiology
- Hypothalamic control of reproductive hormones
- Vitamin D Research Studies
- Immune Response and Inflammation
- Diabetes and associated disorders
- Neuroendocrine Tumor Research Advances
- Birth, Development, and Health
- Erythrocyte Function and Pathophysiology
- Muscle Physiology and Disorders
- Hormonal Regulation and Hypertension
- Infant Nutrition and Health
- S100 Proteins and Annexins
- Estrogen and related hormone effects
- Viral gastroenteritis research and epidemiology
- Cardiovascular, Neuropeptides, and Oxidative Stress Research
- Tumors and Oncological Cases
- Blood Coagulation and Thrombosis Mechanisms
- Regulation of Appetite and Obesity
- Oral and Craniofacial Lesions
- Congenital heart defects research
- Thyroid Cancer Diagnosis and Treatment
- Clinical Nutrition and Gastroenterology
- RNA Research and Splicing
Universidad de Sevilla
1991-2013
Abstract C cells are primarily known for producing calcitonin, a hypocalcemic and hypophosphatemic hormone. Nevertheless, besides their role in calcium homeostasis, may be involved the intrathyroidal regulation of follicular cells, suggesting possible interrelationship between two endocrine populations. If this premise is true, massive changes induced by different agents activity also affect calcitonin‐producing cells. To investigate behaviour those circumstances, we have experimentally...
Abstract The present histometric study is on thyroid glands of Wistar rats ranging in age from 0 to 120 days. mean volume one lobe the 4‐month‐old animals was some 22‐, 10‐, 5‐, and 3‐fold greater, respectively, than volumes newborn, 30‐day‐old rats. At 4 months length 3 times greater at birth. volumetric fractions (Vv) different histological components (follicular cells, C‐cells, colloid, interstitial tissue) changed considerably course development. Vv follicular cells diminished 61.4%...
This paper presents the results of investigations into mitotic rates thyroid endocrine cells in normal postnatal rats, aged 1-120 days. Our study revealed considerable age-dependent shifts mean activity follicular and C-cells. The maximum indices cell renewal were reached during first 10 days life, decreasing gradually significantly until 25 At 1 month, there was a significant recuperation division rate for both types, which declined adult rat. These that proliferation C-cells is inversely...
Thyrotropin-releasing hormone (TRH) synthesized in the hypothalamus has capability of inducing release thyroid-stimulating (TSH) from anterior pituitary, which turn stimulates production thyroid hormones gland. Immunoreactivity for TRH and TRH-like peptides been found some tissues outside nervous system, including thyroid. It demonstrated that C-cells express authentic TRH, affecting secretion by follicular cells. Therefore, could have a paracrine role homeostasis. If this hypothesis is...
Abstract The ultimobranchial follicles (UBFs) are considered embryonic remnants from the body (UBB). They follicular structures that vary in size and appearance depending on age of rat. main objective this article was to study progressive changes shape, size, frequency UBFs postnatal rat, birth old‐age. To accomplish objective, a systematic morphometric incidental UBF has been carried out 110 Wistar rats different ages both sexes, divided into three groups: 1) young (5–90‐day‐old); 2) adult...
In calcium homeostasis, vitamin D3 is a potent serum calcium-raising agent which in vivo regulates both calcitonin (CT) and parathyroid hormone (PTH) gene expression. Serum the major secretagogue for CT, product whose biosynthesis main biological activity of thyroid C-cells. Taking advantage this regulatory mechanism, long-term D3-induced hypercalcemia has been extensively used as model to produce hyperactivation, hyperplasia even proliferative lesions C-cells, supposedly reduce sustained...
Summary A systematic immunohistochemical study of the ultimobranchial tubule (UBT) has been carried out in 45 Wistar rats different ages (0, 5, 10, 15, 20, 25, 30, 60 and 120 days). The existence calcitonin immunoreactive cells UBT wall demonstrated a 5‐days old rat. In addition, studies for thyroglobulin revealed positive staining follicular connected to and, occasionally, isolated lying within solid clusters from UBT. These last results together with continued repeated numerous mitosis PAS...
A study on thyroid glands of Wistar rats ages ranging from 1 to 120 days was carried out. The were serially sectioned and stained for calcitonin using the peroxidase antiperoxidase method. All thyroids contained ultimobranchial follicles (UBF) located partially embedded among usual but in a 5-day-old rat this structure showed an unusual position interstitium connective tissue between cartilage trachea gland. We have observed wall that UBF presence not only resting C cells also mitotic...
Journal Article Mitotic activity of the endocrine cells in rat thyroid glands during postnatal life Get access E Conde, Conde 1Department Cellular Biology, University Seville, Spain. Search for other works by this author on: Oxford Academic Google Scholar I Martin-Lacave, Martin-Lacave J C Utrilla, Utrilla A Moreno, Moreno R Gonzalez-Campora, Gonzalez-Campora H Galera-Davidson Endocrinology, Volume 131, Issue 1, 1 July 1992, Pages 436–440, https://doi.org/10.1210/endo.131.1.1612025 Published: 01 1992