Nitric oxide (NO)-mediated mitochondrial damage plays a critical role in T-2 toxin-induced apoptosis and growth hormone deficiency in rat anterior pituitary GH3 cells

2017 ◽  
Vol 102 ◽  
pp. 11-23 ◽  
Author(s):  
Xianglian Liu ◽  
Pu Guo ◽  
Aimei Liu ◽  
Qinghua Wu ◽  
Xijuan Xue ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Growth Hormone ◽  
Growth Hormone Deficiency ◽  
Anterior Pituitary ◽  
Critical Role ◽  
Mitochondrial Damage ◽  
Hormone Deficiency ◽  
Gh3 Cells ◽  
Induced Apoptosis

scholarly journals MON-234 síNdrome de InterrupcióN del Tallo Pituitario Que Se Presenta Como Amenorrea Primaria

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Fabiola Romero ◽  
Sady Paola Arzamendia ◽  
Dahiana Ferreira ◽  
Claudia Neves de Souza ◽  
Helen López ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Growth Hormone ◽  
Growth Hormone Deficiency ◽  
Anterior Pituitary ◽  
Pituitary Stalk ◽  
Hormone Deficiency ◽  
Primary Amenorrhea ◽  
Posterior Pituitary ◽  
The Central Nervous System ◽  
Posterior Pituitary Lobe

Abstract Pituitary stalk interruption syndrome presenting as primary amenorrhea. The pituitary stalk interruption syndrome is a rare congenital defect that is characterized by the absence or thinning of the pituitary stalk, an absent or ectopic posterior pituitary lobe, and hypoplasia or aplasia of the anterior lobe. The clinical presentation is variable. It is usually diagnosed in the neonatal period due to the clinical manifestations that arise as a consequence of hormonal deficiencies. However some patients are diagnosed at a latter stage in life. Growth hormone deficiency it is observed in virtually all patients and can be associated to other anterior pituitary hormonal deficiencies. There is a high frequency of associated extra-pituitary malformations including those involving the central nervous system and the craniofacial structures. We report the case of a 19-year-old woman with primary amenorrhea, lack of secondary sexual characteristics, short stature, low body mass index due to hypergonadotropic hypogonadism and growth hormone deficiency. The remaining pituitary hormones were normal. A pelvic ultrasound revealed orthotopic ovaries and uterus that were decreased in size. Her karyotype was normal. An MRI of the sellar region revealed an ectopic posterior pituitary lobe, and anterior pituitary hypoplasia with a thin pituitary stalk. The patient was treated with estradiol valerate and norgestrel as well as with growth hormone. In conclusion, the pituitary stalk interruption syndrome is a rare form of congenital hypopituitarism that should be considered in cases of growth hormone deficiency and primary amenorrhea particularly in the presence of extra pituitary malformations involving the central nervous system.

scholarly journals Pituitary stalk transection syndrome

2020 ◽  
Vol 7 (12) ◽  
pp. 2397
Author(s):  
Gayathri Sajeevan ◽  
Sajitha Nair ◽  
Devika Geetha ◽  
Nisha Bhavani ◽  
C. Jayakumar ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Growth Hormone ◽  
Growth Hormone Deficiency ◽  
Anterior Pituitary ◽  
Pituitary Stalk ◽  
Hormone Deficiency ◽  
Pituitary Hormone ◽  
Posterior Pituitary ◽  
Resonance Imaging ◽  
Current Report

Growth hormone deficiency is one of the most common endocrinological causes for short stature. It can either be idiopathic or associated with organic causes like tumors or following surgery. One of the rare causes for growth hormone deficiency in children is pituitary stalk transection syndrome. It can be diagnosed by magnetic resonance imaging of the hypothalamus and pituitary gland which shows an ectopic or absent posterior pituitary, an absent or interrupted pituitary stalk, or small anterior pituitary in combination with growth hormone or other pituitary hormone deficiencies. Current report presents a child with pituitary stalk transection syndrome who was brought for evaluation of hypoglycemic seizures.

scholarly journals The Incidence of Anterior Pituitary Hormone Deficiencies in Patients with Pituitary Microadenoma and Idiopathic Hyperprolactinaemia. A Retrospective Single Centre Study

2018 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Growth Hormone ◽  
Growth Hormone Deficiency ◽  
Incomplete Data ◽  
Anterior Pituitary ◽  
Hormone Deficiency ◽  
Pituitary Hormone ◽  
Study Region ◽  
Anterior Pituitary Hormone ◽  
Single Centre Study ◽  
A Prospective Study

Introduction: Patients with microprolactinoma and idiopathic hyperprolactinaemia are not generally considered to be at risk of hypopituitarism and are therefore not routinely screened for this abnormality. Aims: We aimed to establish the frequency and clinical significance of anterior pituitary hormone deficiencies, comparing patients with radiologically proven microprolactinomas and idiopathic hyperprolactinaemia. Study Design: We retrospectively examined the case notes of 242 patients with hyperprolactinaemia from our centre. Patients who did not fit the profile of surgically naïve microprolactinoma or idiopathic hyperprolactinaemia or who had incomplete data were excluded, resulting in a study group of 185 patients. Results: Out of 242 patients, 185 patients were identified with microprolactinoma and idiopathic hyperprolactinaemia. 47 (20 %) were male and 148 (80 % ) were female with mean age 35.4 ± 13.7. 87(47%). Four types of hypofunctioning pituitary gland were seen such as panhypopituitarism, secondray hypogonadism, growth hormone deficiency and central hypothroidism and were associated with more frequent normal MRI. Patients with MRI evidence of microprolactinoma were identified, three (3.4%) of whom had one or more anterior pituitary hormone deficiencies. A total of 98 (53%) patients with MRI-negative idiopathic hyperprolactinaemia were identified, twelve (12.2%) of whom had one or more anterior pituitary hormone deficiencies. Patients in the MRI-positive and MRI-negative groups had panhypopituitarism, hypogonadotrophic hypogonadism and growth hormone deficiency that required hormone. Conclusion: The current study shows an increased frequency anterior pituitary hormone deficiency in patients with idiopathic hyperprolactinaemia, not with pitutary microadenoma. A prospective study would be required to assess the underlying cause for these abnormalities, as they suggest a nontumour pan-pituitary process. Limitations: Question of clustering of cases within the study region and limited study sample size.

Sign in / Sign up

Export Citation Format

Share Document