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https://www.readbyqxmd.com/read/28530316/-radiosurgery-for-pituitary-adenomas
#1
REVIEW
Or Cohen-Inbar
Pituitary adenomas represent one of the most common types of intracranial tumors, accounting for 10-20% of intracranial tumors. While their macroscopic appearance and anatomical location are relatively homogeneous, pituitary tumors differ widely, generating a variety of neurological and endocrine clinical sequelae. Treatment options include hormone suppressive medical therapy, microscopic or endoscopic neurosurgical resection, radiosurgery, radiation therapy, or observation depending on the biochemical profile and the clinical status of the patient...
January 2017: Harefuah
https://www.readbyqxmd.com/read/28530019/men1-in-children-and-adolescents-data-from-patients-of-a-regional-referral-center-for-hereditary-endocrine-tumors
#2
Letizia Vannucci, Francesca Marini, Francesca Giusti, Simone Ciuffi, Francesco Tonelli, Maria Luisa Brandi
PURPOSE: To retrospectively evaluate the age of onset of MEN1-associated lesions in a group of affected children and adolescents and to compare the clinical features of our series with the evidence derived from the literature. METHODS: The study population consisted of 22 Italian children and adolescents (age 6-31 years at the time of the inclusion in this study) all with a clinical and/or a genetic diagnosis of MEN1 performed before the age of 16 who have been followed-up regularly from 1998 to 2016 at the Regional Referral Center for Hereditary Endocrine Tumors...
May 22, 2017: Endocrine
https://www.readbyqxmd.com/read/28525332/distribution-and-immunohistochemical-characteristics-of-cocaine-and-amphetamineregulated-transcript-positive-nerve-elements-in-the-pelvic-ganglia-of-the-female-pig
#3
A Zacharko-Siembida, M Matysek, R Szalak, A Radlińska, K Obszańska, M B Arciszewski
Cocaine- and amphetamine-regulated transcript (CART) peptides are widely expressed not only in the brain but also in numerous endocrine/neuroendocrine cells as well as in neurons of the peripheral nervous system. The present study investigated the distribution patterns of CART-like immunoreactivity in the pelvic plexus (PP) of the female pig. The co-expression of CART with principal neurotransmitter markers: choline acetyltransferase (ChAT), tyrosine hydroxylase (TH), serotonin (5-HT) or biologically active neuropeptides: pituitary adenylate cyclase-activating polypeptide (PACAP), substance P (SP), calbindin was analyzed using double immunohistochemical stainings...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28522647/prkar1a-mutation-causing-pituitary-dependent-cushing-disease-in-a-patient-with-carney-complex
#4
Florian W Kiefer, Yvonne Winhofer, Donato Iacovazzo, Marta Korbonits, Stefan Wolfsberger, Engelbert Knosp, Franz Trautinger, Romana Höftberger, Michael Krebs, Anton Luger, Alois Gessl
CONTEXT: Carney complex (CNC) is an autosomal dominant condition caused, in most cases, by an inactivating mutation of the PRKAR1A gene, which encodes for the type 1 alpha regulatory subunit of protein kinase A. CNC is characterized by the occurrence of endocrine overactivity, myxomas and typical skin manifestations. Cushing syndrome due to primary pigmented nodular adrenocortical disease (PPNAD) is the most frequent endocrine disease observed in CNC. CASE DESCRIPTION: Here we describe the first case of a patient with CNC and adrenocorticotropic hormone (ACTH)-dependent Cushing disease due to a pituitary corticotroph adenoma...
May 18, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28520591/stem-cell-therapy-and-its-potential-role-in-pituitary-disorders
#5
Montserrat Lara-Velazquez, Akinduro O Oluwaseun, Ronald Reimer, Whitney W Woodmansee, Alfredo Quinones-Hinojosa
PURPOSE OF REVIEW: The pituitary gland is one of the key components of the endocrine system. Congenital or acquired alterations can mediate destruction of cells in the gland leading to hormonal dysfunction. Even though pharmacological treatment for pituitary disorders is available, exogenous hormone replacement is neither curative nor sustainable. Thus, alternative therapies to optimize management and improve quality of life are desired. RECENT FINDINGS: An alternative modality to re-establish pituitary function is to promote endocrine cell regeneration through stem cells that can be obtained from the pituitary parenchyma or pluripotent cells...
May 16, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28508370/a-proteomic-evaluation-of-sympathetic-activity-biomarkers-of-the-hypothalamus-pituitary-adrenal-axis-by-western-blotting-technique-following-experimental-traumatic-brain-injury
#6
Hale Zerrin Toklu, Yasemin Sakarya, Nihal Tümer
Endocrine disorders and autonomic dysfunction are common paradigms following traumatic brain injury (TBI). Alterations in the hypothalamus-pituitary-adrenal (HPA) axis following TBI may result in impaired vasopressor response, energy imbalance, fatigue, depression, or neurological disorders. Autonomic dysfunction is a common disorder following TBI. The sympathetic activity markers on HPA axis can be measured by Western blot protein analysis. Tyrosine hydroxylase, dopamine beta hydroxylase are the key enzymes for the synthesis of norepinephrine; and neuropeptide Y (NPY) is the peptide that is co-stored and co-released with norepinephrine...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28506430/george-e-palade-memorial-lecture-my-life-in-pancreatic-research-unexpected-results-may-open-the-door
#7
REVIEW
Makoto Otsuki
The Palade Prize is the most distinguished award of the IAP for achievement in pancreatic research. It is named after George E. Palade, who in 1974 was awarded the Nobel Prize for his work on protein trafficking in pancreatic acinar cells. It is a great honor to be awarded the 2016 Palade Prize. While I was in graduate school, I was conducting research on hypothalamo-pituitary-thyroid axis; after finishing graduate school, I began research on amylase isoenzymes. This was the first step of my pancreatic research...
May 6, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28504504/-cornelia-de-lange-syndrome-and-multiple-hormonal-deficiency-an-unusual-association-clinical-case
#8
Víctor M Mora-Bautista, Víctor Mendoza-Rojas, Gustavo A Contreras-García
Cornelia de Lange syndrome is a genetic disease characterized by distinctive facial features, failure to thrive, microcephaly and several malformations associated. Its main endocrinological features are anomalies of the genitalia. We present a 13-year-old boy, who suffered from complicated aspiration pneumonia and showed Cornelia de Lange syndrome phenotype, with global developmental delay, suction-swallowing abnormalities, short stature and abnormal genitalia associated. His bone age was delayed, so he underwent full endocrinological panel...
June 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28502826/recurrent-ovarian-sertoli-leydig-cell-tumor-a-rare-cause-of-secondary-amenorrhea-in-adolescence
#9
Amy M Luke, John W Moroney, Andrea Snitchler, Susan L Whiteway
BACKGROUND: Ovarian tumors, although uncommon in children, can retain endocrine function that disrupts normal feedback mechanisms leading to amenorrhea. Inheritance of germline DICER1 mutations can lead to increased risk for development of ovarian Sertoli-Leydig cell tumors (SLCT). CASE: We report the first case of secondary amenorrhea due to elevated inhibin B levels in an adolescent female with an ovarian SLCT. SUMMARY AND CONCLUSIONS: Ovarian tumors should be included in the differential diagnosis for pediatric patients presenting with menstrual irregularities...
May 11, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28500832/combined-pituitary-hormone-deficiency-in-a-girl-with-48-xxxx-and-rathke-s-cleft-cyst
#10
Surabhi Uppal, Youn Hee Jee, Marissa Lightbourne, Joan C Han, Constantine A Stratakis
BACKGROUND: Tetrasomy X is a rare chromosomal aneuploidy seen in girls, associated with facial dysmorphism, premature ovarian insufficiency and intellectual disability. A Rathke's cleft cyst (RCC) is a remnant of Rathke's pouch which may cause multiple pituitary hormone deficiencies by exerting pressure on the pituitary gland in the sella. METHODS/RESULTS: The patient was diagnosed with tetrasomy X by karyotyping during infancy. Brain MRI and multiple endocrine stimulation tests revealed RCC and combined pituitary hormone deficiency (growth hormone deficiency, secondary adrenal insufficiency and central hypothyroidism) likely due to RCC...
January 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28491316/pituitary-abscess-in-an-hiv-1-infected-patient
#11
Hiroyuki Yamazaki, Masayuki Kobayashi, Anamaria Daniela Sarca, Akifumi Takaori-Kondo
OBJECTIVES: Pituitary abscess is a rare occurrence among pituitary conditions, but one which carries life-threatening potential. An immunocompromised status is a risk factor for the development of a pituitary abscess; however, literature describes only one case among HIV-infected patients. METHODS AND RESULTS: We present here a case of pituitary abscess in an HIV-1-positive patient, who demonstrated a shock status, disturbance of consciousness and generalized skin rash with laboratory findings of hypovolemia, acute inflammatory reaction and blood electrolyte abnormality...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28487631/activation-of-brain-somatostatin-signaling-suppresses-crf-receptor-mediated-stress-response
#12
REVIEW
Andreas Stengel, Yvette F Taché
Corticotropin-releasing factor (CRF) is the hallmark brain peptide triggering the response to stress and mediates-in addition to the stimulation of the hypothalamus-pituitary-adrenal (HPA) axis-other hormonal, behavioral, autonomic and visceral components. Earlier reports indicate that somatostatin-28 injected intracerebroventricularly counteracts the acute stress-induced ACTH and catecholamine release. Mounting evidence now supports that activation of brain somatostatin signaling exerts a broader anti-stress effect by blunting the endocrine, autonomic, behavioral (with a focus on food intake) and visceral gastrointestinal motor responses through the involvement of distinct somatostatin receptor subtypes...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28485270/a-review-of-the-scaffold-protein-menin-and-its-role-in-hepatobiliary-pathology
#13
Laurent Ehrlich, Chad Hall, Fanyin Meng, Terry Lairmore, Gianfranco Alpini, Shannon Glaser
Multiple endocrine neoplasia type I (MEN1) is a familial cancer syndrome with neuroendocrine tumorigenesis of the parathyroid glands, pituitary gland, and pancreatic islet cells. The MEN1 gene codes for the canonical tumor suppressor protein, menin. Its protein structure has recently been crystallized, and it has been investigated in a multitude of other tissues. In this review, we summarize recent advancements in understanding the structure of the menin protein and its function as a scaffold protein in histone modification and epigenetic gene regulation...
April 28, 2017: Gene Expression
https://www.readbyqxmd.com/read/28484746/testosterone-regulates-nucb2-mrna-expression-in-male-mouse-hypothalamus-and-pituitary-gland
#14
Sojeong Seon, Daun Jeon, Heejeong Kim, Yiwa Chung, Narae Choi, Hyunwon Yang
Nesfatin-1/NUCB2 is known to take part in the control of the appetite and energy metabolism. Recently, many reports have shown nesfatin-1/NUCB2 expression and function in various organs. We previously demonstrated that nesfatin-1/NUCB2 expression level is higher in the pituitary gland compared to other organs and its expression is regulated by 17β-estradiol and progesterone secreted from the ovary. However, currently no data exist on the expression of nesfatin-1/NUCB2 and its regulation mechanism in the pituitary of male mouse...
March 2017: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/28483366/lessons-from-monogenic-causes-of-growth-hormone-deficiency
#15
Thierry Brue, Alexandru Saveanu, Nicolas Jullien, Teddy Fauquier, Frédéric Castinetti, Alain Enjalbert, Anne Barlier, Rachel Reynaud
Through the multicentric international GENHYPOPIT network, 10 transcription factor genes involved in pituitary development have been screened in more than 1200 patients with constitutional hypopituitarism over the past two decades. The present report summarizes the main lessons learned from this phenotype-based genetic screening: (1) genetically determined hypopituitarism does not necessarily present during childhood; (2) constitutional hypopituitarism may be characterized by a pure endocrine phenotype or by various combinations of endocrine deficits and visceral malformations; (3) syndromic hypopituitarism may also be observed in patients with POU1F1 or PROP1 mutations; (4) in cases of idiopathic hypopituitarism, extensive genetic screening identifies gene alterations in a minority of patients; (5) functional studies are imperfect in determining the involvement of an allelic variant in a specific pituitary phenotype...
May 5, 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28474562/stress-neuropeptides-and-gastric-mucosa
#16
Klara Gyires, Ágnes Fehér
Exposure of the organism to a hostile stimulus results in a series of coordinated reactions that aim to avoid the aversive effect and maintain or restore homeostasis of the organism. In response to noxious stimuli corticotropin-releasing factor (CRF), the primary mediator of stress responses is released from the paraventricular nucleus resulting in activation of the hypothalamic-pituitary-adrenocortical axis and coordination of the endocrine, autonomic, behavioral and immune responses to stress. Several other neuropeptides, released in a coordinated way are also involved in the regulation of the stress response...
November 18, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28472827/3d-volumetric-measurements-of-gh-secreting-adenomas-correlate-with-baseline-pituitary-function-initial-surgery-success-rate-and-disease-control
#17
Amit Tirosh, Georgios Z Papadakis, Prashant Chittiboina, Charalampos Lyssikatos, Elena Belyavskaya, Meg Keil, Maya B Lodish, Constantine A Stratakis
There is scarce data on the clinical utility of volume measurement for growth hormone (GH)-secreting pituitary adenomas. The current study objective was to assess the association between pituitary adenoma volumes and baseline endocrine evaluation, initial surgical success rate, and disease control among patients with acromegaly. A retrospective cohort study was conducted at a clinical research center including patients with acromegaly due to GH-secreting pituitary adenomas. Baseline hormonal evaluation and adenoma characteristics according to MRI were collected...
May 4, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28471129/management-of-a-multiple-endocrine-neoplasia-type-1-during-pregnancy-a-case-report-and-review-of-the-literature
#18
Halil Korkut Daglar, Ayse Kirbas, Ebru Biberoglu, Bergen Laleli, Nuri Danisman
Multiple Endocrine Neoplasia Type 1 (MEN1) or Wermer's syndrome is a rare hereditary endocrine syndrome with high penetrance caused by mutations in MEN1 tumor suppressor gene. MEN1 is characterized by hyperplasia or tumoral enlargement in a number of endocrine organs (parathyroid glands, pancreas, pituitary gland, adrenal gland) and it could be hormonally active or inactive. MEN1 is a significant cause of morbidity due to hormone secretion and mass effect. Since it is a rare condition, there are no guidelines with respect to the follow-up of pregnant women with MEN1...
July 2016: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/28469929/an-intrasellar-pituitary-adenoma-gangliocytoma-presenting-as-acromegaly
#19
Melissa H Lee, Penelope McKelvie, Balasubramanian Krishnamurthy, Yi Yuen Wang, Carmela Caputo
Most cases of acromegaly are due to growth hormone (GH)-secreting pituitary adenomas arising from somatotroph cells. Mixed pituitary adenoma and gangliocytoma tumours are rare and typically associated with hormonal hypersecretion, most commonly GH excess. Differentiating these mixed tumours from conventional pituitary adenomas can be difficult pre-operatively, and careful histological analysis after surgical resection is key to differentiating the two entities. There is little literature addressing the possible mechanisms for the development of mixed pituitary adenoma-gangliocytomas; however, several hypotheses have been proposed...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28469921/gonadotrophin-abnormalities-in-an-infant-with-lowe-syndrome
#20
Bronwen E Warner, Carol D Inward, Christine P Burren
SUMMARY: This case, presenting with bilateral impalpable testes, illustrates the relevance of a broad differential disorders of sex development case management. It provides new insights on hypothalamic-pituitary-gonadal (HPG) axis and testicular function abnormalities in the multisystem disorder of Lowe syndrome. Lowe syndrome, also known as oculocerebrorenal syndrome, is a rare disorder characterised by eye abnormalities, central nervous system involvement and proximal renal tubular acidosis...
2017: Endocrinology, Diabetes & Metabolism Case Reports
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