The pituitary gland regulates numerous physiological functions including growth, reproduction, temperature and metabolic homeostasis, lactation, and response to stress. Pituitary organogenesis is dependent on signaling factors that are produced in and around the developing pituitary. The studies described in this report reveal that the forkhead transcription factor, Foxd1, is not expressed in t...

headache, vision loss, and ophthalmoplegia from pituitary hemorrhage or infarction characterize pituitary apoplexy,1,3,6–8 and MR imaging of the brain often demonstrates a pituitary mass with heterogeneous signal due to the presence of blood.7 Apoplexy typically occurs in a previously unrecognized pituitary adenoma, but it can also occur when the pituitary gland is normal. Various precipitating...

Pituitary adenomas are one of the most common intracranial tumors. Non-functioning macroadenomas usually diagnosed when they cause symptoms due to mass effect on surrounding structures. We present case a 48-year-old man who presented with headache associated ptosis right eye and right-sided blurry vision for three days. Initial computerized tomography (CT) scan head did not report mass, acute i...

In previous studies we demonstrated the immunohistochemical expression of aromatase in pituitary cells. In order to determine whether pituitary aromatase is involved in the paracrine regulation of prolactin-producing pituitary cells and the physiological relevance of pituitary aromatase in the control of these cells, an in vivo and in vitro immunocytochemical and morphometric study of prolactin...

Leptin actions at the pituitary level have been extensively investigated in mammalian species, but remain insufficiently characterized in lower vertebrates, especially in teleost fish. Prolactin (PRL) is a pituitary hormone of central importance to osmoregulation in fish. Using goldfish as a model, we examined the global and brain-pituitary distribution of a leptin receptor (lepR) and examined ...

BACKGROUND Pituitary tumors are a common form of endocrine neoplasia. However few studies assessed the expression of the principal cyclin regulating checkpoint exit, cyclin D1. Cyclin D1 expression in pituitary tumors and its possible relation to MIB-1 and p27/Kip1 labeling indices (LIs) was explored. DESIGN We studied a total of 199 pituitaries, including normal pituitaries (n=7), pituitary ...

Introduction:  The purpose and our novelty of the current study were to evaluate the HPA function in adult survivors of primary non-pituitary brain tumors and its association with treatment-related factors such as received dose to the organs at risk, age at irradiation, surgery, and adjuvant chemotherapy in patients treated with RT for brain tumors. Moreover, it aimed to achie...

OTX2 is a homeodomain transcription factor that is necessary for normal head development in mouse and man. Heterozygosity for loss-of-function alleles causes an incompletely penetrant, haploinsufficiency disorder. Affected individuals exhibit a spectrum of features that range from developmental defects in eye and/or pituitary development to acephaly. To investigate the mechanism underlying the ...

BACKGROUND Pituitary adenoma is a common intracranial tumor in neurosurgery. Some pituitary adenomas have the characteristics of invasive growth make them unable to be removed completely by surgery leading to easy relapse. Discoidin domain receptor l (DDR1) is a new kind of tyrosine kinase receptor on the cell surface. DDR1 can be activated by tumor microenvironment signal in tumorigenesis, inc...

BACKGROUND Pituitary adenoma combined with intracranial aneurysm is not rare. Some aneurysms are located inside pituitary adenomas, and most do not rupture. Pituitary apoplexy caused by aneurysm rupture is rare and is easily misdiagnosed as simple pituitary adenoma apoplexy. CASE PRESENTATION In this study, we report one case of rare pituitary adenoma apoplexy caused by the rupture of an ante...