Gland Endocrine
Mostrando 25-36 de 83 artigos, teses e dissertações.
-
25. Developmental regulation of calmodulin-dependent adenylate cyclase activity in an insect endocrine gland.
The insect prothoracic gland produces ecdysteroids that elicit molting and metamorphosis, and neurohormone stimulation of steroidogenesis by this gland involves both Ca2+ and cyclic adenosine monophosphate second messengers. Prothoracic gland adenylate cyclase exhibits a complex Ca2+/calmodulin (CaM) dependence, a component of which requires an activated Gs
-
26. The gene for the neuropeptide gonadotropin-releasing hormone is expressed in the mammary gland of lactating rats.
The high concentration of gonadotropin-releasing hormone (GnRH) in milk of several species implies that the mammary gland is either a site of synthesis for this neuropeptide or that it is efficiently concentrated from plasma by this organ. By PCR amplification of mammary gland cDNA, we have demonstrated expression of the mRNA for GnRH. The GnRH mRNA was pres
-
27. An immunohistochemical study of gastrointestinal endocrine cells in a nectarivorous marsupial, the honey possum (Tarsipes rostratus).
The distribution and relative frequency of occurrence of gastrointestinal endocrine cells exhibiting immunoreactivity to eleven peptides and one amine were examined immunohistochemically in the gastrointestinal mucosa of the adult honey possum which feeds almost exclusively on nectar and pollen. Seven types of endocrine cells, immunoreactive for serotonin, s
-
28. The Carotid Body as a Neuroendocrine Organ Involved in Control of Erythropoiesis
The carotid body is generally regarded solely as a chemoreceptor. This paper presents evidence that the carotid body is also an endocrine gland, secreting one or more erythropoiesis-controlling hormones. Its removal is followed by anemia and by a lack of reticulocyte response to daily bleeding.
-
29. The harderian gland: a tercentennial review.
The harderian gland was first described in 1694 by Johann Jacob Harder (1656-1711). It occurs in most terrestrial vertebrates and is located within the orbit where, in some species, it is the largest structure. It may be compound tubular or compound tubuloalveolar, and its secretory duct is usually morphologically distinct only after leaving the substance of
-
30. Management of pheochromocytomas in patients with multiple endocrine neoplasia type 2 syndromes.
OBJECTIVE: The authors sought to determine the optimal surgical management of pheochromocytomas that develop in patients with multiple endocrine neoplasia (MEN) type 2 syndromes. SUMMARY BACKGROUND DATA: The performance of empirical bilateral adrenalectomy in patients with MEN 2A or MEN 2B, whether or not they have bilateral pheochromocytomas, is controversi
-
31. Bv8 and endocrine gland-derived vascular endothelial growth factor stimulate hematopoiesis and hematopoietic cell mobilization
Bv8 and endocrine-gland-derived VEGF (EG-VEGF), or prokineticins, are two highly related, secreted proteins that we previously described as selective angiogenic mitogens. Here we describe the expression and functional characterization of Bv8 in peripheral blood cells, notably monocytes, neutrophils, and dendritic cells, and in the bone marrow. In human and m
National Academy of Sciences.
-
32. The effects of late ovariectomy on the proliferation and differentiation of the uterus of the pregnant rat.
The effects of ovariectomy at day 12 of pregnancy on the proliferative activity of the uterine epithelium, metrial gland and uterine muscle in the rat were studied by autoradiography in animals killed one hour after a single injection of tritiated thymidine. The results were amplified by histological and histochemical studies. One day after operation epithel
-
33. C cells evolve at the same rhythm as follicular cells when thyroidal status changes in rats
C cells are primarily known for producing calcitonin, a hypocalcemic and hypophosphatemic hormone. Nevertheless, besides their role in calcium homeostasis, C cells may be involved in the intrathyroidal regulation of follicular cells, suggesting a possible interrelationship between the two endocrine populations. If this premise is true, massive changes induce
Blackwell Science Inc.
-
34. Hormonal control of p53 and chemoprevention
Improvements in the detection and treatment of breast cancer have dramatically altered its clinical course and outcome. However, prevention of breast cancer remains an elusive goal. Parity, age of menarche, and age at menopause are major risk factors drawing attention to the important role of the endocrine system in determining the risk of breast cancer, whi
BioMed Central.
-
35. Carcinoid tumour of possible thymic origin: case report.
A case of carcinoid tumour of possible thymic origin in a 43-year-old man is presented. Carcinoid tumour arising in the anterior mediastinum (thymus) is a rare condition and only 26 cases have been reported in the past. A review of the literature showed that three-quarters of the reported cases were asymptomatic but the remainder of patients presented with v
-
36. Cell specialization in the epithelium of the small intestine of feeding Xenopus laevis tadpoles.
The intestinal epithelium of feeding Xenopus laevis tadpoles was studied using light microscope, electron microscope and autoradiographic techniques. The wall of the small intestine differs from that of most other vertebrates studied in that it lacks villous-like folds. A single prominent longitudinal fold, the typhlosole, forms about stage 49, and a series