keyword
MENU ▼
Read by QxMD icon Read
search

pituitary tumor

keyword
https://www.readbyqxmd.com/read/29145000/proopiomelanocortin-processing-and-prohormone-convertase-1-level-in-dogs-with-pituitary-corticotroph-tumors
#1
G Benchekroun, P de Fornel-Thibaud, D Rosenberg
Preliminary data suggest that prohormone convertase 1 (PC1/3) protein expression and proopiomelanocortin (POMC) processing are altered in large corticotroph tumors. The aim of this study was to characterize the levels of ACTH precursors and PC1/3 protein in small and large corticotroph tumors of dogs with Cushing's disease. Pituitary tumors of dogs with Cushing's disease were collected postmortem 30 min to 12h after natural death or euthanasia, and classified as small or large. POMC, pro-ACTH, and PC1/3 were detected by Western blotting...
October 13, 2017: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/29144802/lipid-accumulation-product-visceral-adiposity-index-and-chinese-visceral-adiposity-index-as-markers-of-cardiometabolic-risk-in-adult-growth-hormone-deficiency-patients-a-cross-sectional-study
#2
Xin Xie, Qing Li, Lingmin Zhang, Wei Ren
OBJECTIVE: Adult growth hormone deficiency (AGHD) is associated with cardiometabolic risk factors. Given that cardiovascular disease (CVD) is an important cause of morbidity and mortality in the AGHD population, there is a need for alternative, non-invasive methods of assessing cardiometabolic risk in this population. Chinese visceral adiposity index (CVAI) is a new marker of visceral fat dysfunction that is based on age, body mass index (BMI), waist circumference (WC) and metabolic parameters...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29142006/characterization-of-neuroendocrine-tumors-in-heterozygous-mutant-menx-rats-a-novel-model-of-invasive-medullary-thyroid-carcinoma
#3
Sara Molatore, Andrea Kügler, Martin Irmler, Tobias Wiedemann, Frauke Neff, Annette Feuchtinger, Johannes Beckers, Mercedes Robledo, Frederico Roncaroli, Natalia S Pellegata
Rats affected by the MENX syndrome spontaneously develop multiple neuroendocrine tumors (NETs) including adrenal, pituitary and thyroid gland neoplasms. MENX was initially reported to be inherited as a recessive trait and affected rats were found to be homozygous for the predisposing Cdkn1b mutation encoding p27. We here report that heterozygous MENX mutant rats (p27+/mut) develop the same spectrum of NETs seen in the homozygous (p27mut/mut) animals but with slower progression. Consequently, p27+/mut rats have a significantly shorter lifespan compared with their wild-type (p27+/+) littermates...
November 15, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29138567/resveratrol-ameliorates-chronic-unpredictable-mild-stress-induced-depression-like-behavior-involvement-of-the-hpa-axis-inflammatory-markers-bdnf-and-wnt-%C3%AE-catenin-pathway-in-rats
#4
Xin-Hua Yang, Su-Qi Song, Yun Xu
Classic antidepressant drugs are modestly effective across the population and most are associated with intolerable side effects. Recently, numerous lines of evidence suggest that resveratrol (RES), a natural polyphenol, possesses beneficial therapeutic activity for depression. The aim of the present study was to explore whether RES exhibits an antidepressant-like effect in a depression model and to explore the possible mechanism. A depression model was established via chronic unpredictable mild stress (CUMS), after which the model rats in the RES and fluoxetine groups received a daily injection of RES or fluoxetine, respectively...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29138072/preoperative-assessment-of-craniopharyngioma-adherence-mri-findings-correlated-with-the-severity-of-tumor-attachment-to-the-hypothalamus
#5
Ruth Prieto, José M Pascual, Maria Rosdolsky, Laura Barrios
BACKGROUND: Craniopharyngioma (CP) adherence represents a heterogeneous pathological feature that critically influences the potentially safe and radical resection. OBJECTIVE: To define the MRI predictors of CP adherence severity. METHODS: This study retrospectively investigated a cohort of 200 surgically treated CPs with their corresponding preoperative conventional MRI scans. MRI findings related to the distortions of anatomical structures along the sella turcica-third ventricle axis caused by CPs, in addition to the tumor's shape and calcifications were analyzed and correlated with the definitive type of CP adherence observed during the surgical procedures...
November 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29136943/adam12-induces-emt-and-promotes-cell-migration-invasion-and-proliferation-in-pituitary-adenomas-via-egfr-erk-signaling-pathway
#6
Junwen Wang, Zhuo Zhang, Ran Li, Feng Mao, Wei Sun, Juan Chen, Huaqiu Zhang, Jörg-W Bartsch, Kai Shu, Ting Lei
Pituitary adenomas are the second most common primary brain tumor with invasive properties. We have previously identified that ADAM12 (a disintegrin and metalloprotease 12) overexpression is associated with the tumor invasion of pituitary adenomas, however, the underlying mechanism remains unknown. This study aims to elucidate the mechanistic role of ADAM12 in regulating the tumor invasion of pituitary adenomas. In this study, we first showed that ADAM12 expression was concomitant with epithelial to mesenchymal transition (EMT) process in clinical specimens of human pituitary adenomas...
November 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29135804/surgical-management-of-tumors-involving-meckel-s-cave-and-cavernous-sinus-role-of-an-extended-middle-fossa-and-lateral-sphenoidectomy-approach
#7
Daniel Q Sun, Arnold H Menezes, Matthew A Howard, Bruce J Gantz, David M Hasan, Marlan R Hansen
OBJECTIVE: To study the indications and outcomes of lateral sphenoidectomy as part of a combined skull base approach in the treatment of tumors involving Meckel's cave (MC) and cavernous sinus (CS). STUDY DESIGN: Retrospective patient series. SETTING: Tertiary referral center. PATIENTS: Twenty-two consecutive patients (mean age: 45 yr, range: 16-76) who underwent transzygomatic, extended middle fossa approaches for tumors involving MC and CS...
November 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135108/addressing-the-post-irradiation-hypothalamic-pituitary-endocrine-abnormalities-of-brain-tumors-in-pediatric-patients
#8
Louloudenia Velentza, Maria Tolia, Charikleia Christakou, Michail Nikolaou, Ioannis Zerdes, Nikolaos Tsoukalas, Jiannis Hajiioannou, Konstantinos Tsanadis, Georgios Rigas, Michail Mitsis, Kyriaki Theodorou, Kyriaki Pistevou-Gombaki, Periklis Tsekeris, George Kyrgias
PURPOSE: Hypothalamic-pituitary axis is susceptible to radiotherapy, causing endocrine disorders to childhood cancer survivors. We conducted a systematic review in order to assess the radiation-induced toxicity that leads to hormone secretion abnormalities and their severity in children with brain tumors. METHODS: The data were collected by relevant studies on PubMed and EMBASE. Articles up to December 2016 were included. We selected studies which focused on children patients (<18 yr old) with brain tumors treated with radiotherapy and the consequences for their endocrine system...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29134164/visual-outcomes-after-endoscopic-pituitary-surgery-in-patients-presenting-with-preoperative-visual-deficits
#9
Felipe Fredes, Gabriel Undurraga, Pablo Rojas, Felipe Constanzo, Carolina Lazcano, Jaime Pinto, Thomas Schmidt
Introduction  Pituitary adenomas represent 15% of primary brain tumors. Visual disturbance is a common clinical manifestation of these neoplasms due, among other factors, to local mass effect on the optic system. Objective  To evaluate changes of the visual fields in patients undergoing endoscopic endonasal approach (EEA) for pituitary adenomas and to find predictive factors for successful visual field outcome. Material and Methods  This is a cross-sectional study. A review was conducted of medical records of consecutive patients with tumors of the sellar region undergoing EEA between January 2008 and December 2012 at the Skull Base Unit of Guillermo Grant Benavente Hospital, University of Concepción, Concepción, Chile, and who had undergone pre- and postoperative visual field evaluation...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29125446/suprasellar-and-recurrent-pediatric-craniopharyngiomas-expanding-indications-for-the-extended-endoscopic-transsphenoidal-approach
#10
Andrew F Alalade, Elizabeth Ogando-Rivas, Jerome Boatey, Mark M Souweidane, Vijay K Anand, Jeffrey P Greenfield, Theodore H Schwartz
OBJECTIVE The expanded endonasal endoscopic transsphenoidal approach has become increasingly used for craniopharyngioma surgery in the pediatric population, but questions still persist regarding its utility in younger children, in recurrent and irradiated tumors, and in masses primarily located in the suprasellar region. The narrow corridor, incomplete pneumatization, and fear of hypothalamic injury have traditionally relegated this approach to application in older children with mostly cystic craniopharyngiomas centered in the sella...
November 10, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29123133/aip-limits-neurotransmitter-release-by-inhibiting-calcium-bursts-from-the-ryanodine-receptor
#11
Bojun Chen, Ping Liu, Edward J Hujber, Yan Li, Erik M Jorgensen, Zhao-Wen Wang
Pituitary tumors are frequently associated with mutations in the AIP gene and are sometimes associated with hypersecretion of growth hormone. It is unclear whether other factors besides an enlarged pituitary contribute to the hypersecretion. In a genetic screen for suppressors of reduced neurotransmitter release, we identified a mutation in Caenorhabditis elegans AIPR-1 (AIP-related-1), which causes profound increases in evoked and spontaneous neurotransmitter release, a high frequency of spontaneous calcium transients in motor neurons and an enlarged readily releasable pool of vesicles...
November 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/29122303/is-it-really-possible-to-predict-the-consistency-of-a-pituitary-adenoma-preoperatively
#12
A K Thotakura, M R Patibandla, M K Panigrahi, A Mahadevan
OBJECTIVES: To determine if the consistency of pituitary adenomas can be predicted based on a preoperative MRI study and to assess the surgical outcome of firm pituitary adenomas. MATERIALS AND METHODS: One hundred consecutive patients with pituitary adenomas and suprasellar extension were operated by a transsphenoidal approach from July 2003 to December 2006. In addition to the neurological examination, the patients were evaluated by ophthalmological, endocrinological and radiological workups...
November 6, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29122079/sinonasal-t-cell-expression-of-cytotoxic-mediators-granzyme-b-and-perforin-is-reduced-in-patients-with-chronic-rhinosinusitis
#13
Sarah E Smith, Rodney J Schlosser, James R Yawn, Jose L Mattos, Zachary M Soler, Jennifer K Mulligan
BACKGROUND: CD8+ T cells and natural killer (NK) cells are cytotoxic cells that use granzyme B (GrB) and perforin. Defective cytotoxic function is known to play a role in dysregulated immune response as seen in chronic sinusitis, also referred to as chronic rhinosinusitis (CRS). However, to our knowledge, in the United States, neither GrB or perforin expression has been reported in patients with CRS. OBJECTIVE: The aim of this study was to investigate sinonasal cytotoxic cells, their mediators, and cell-specific distribution of these mediators in patients with CRS with nasal polyp (CRSwNP) and in patients with CRS without nasal polyp (CRSsNP)...
November 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29120512/endoscopic-endonasal-surgery-for-pituitary-adenomas-extending-to-the-oculomotor-cistern
#14
Masaaki Taniguchi, Tomoaki Nakai, Hidehito Kimura, Yuichi Fujita, Yoichi Uozumi, Masaaki Kohta, Eiji Kohmura
BACKGROUND: Extension of a pituitary adenoma to the oculomotor cistern harbors the risk of oculomotor nerve impairment and further extension into the interpeduncular cistern. The role of endoscopic endonasal surgery for those lesions was investigated. METHODS: The medical records were retrospectively analyzed. Attention was paid to the oculomotor nerve function and removal rate of the tumor within the oculomotor and interpeduncular cisterns. RESULTS: Six patients were eligible for the study, including 2 with oculomotor nerve palsy...
November 9, 2017: Head & Neck
https://www.readbyqxmd.com/read/29117664/pituitary-abscess-with-unusual-clinical-course
#15
Milica Medić Stojanoska, Duško Kozić, Mladen Bjelan, Petar Vuleković, Nada Vučković, Bojan Vuković, Branka Kovačev Zavišić
The aim is to present unusual clinical course and magnetic resonance imaging (MRI) features of pituitary abscess. A 59-year-old man presented with fever, polyuria, polydipsia and marked weight loss within the last two months. Basic endocrinology tests revealed the presence of anterior pituitary dysfunction, associated with central diabetes insipidus and increased levels of inflammatory markers. The presence of expansile sellar lesion, showing restricted diffusion signal pattern compatible with acute pituitary pyogenic abscess was found on MRI...
December 2016: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29117616/invasive-pituitary-adenoma-derived-tumor-associated-fibroblasts-promote-tumor-progression-both-in-vitro-and-in-vivo
#16
Liang Lv, Shizhen Zhang, Yu Hu, Peizhi Zhou, Ling Gao, Mengmeng Wang, Zhen Sun, Cheng Chen, Senlin Yin, Xiujie Wang, Shu Jiang
Tumor-associated fibroblasts are the most abundant population in tumor stroma and impact on tumor initiation and progression. However, the biological function of tumor-associated fibroblasts in pituitary adenomas has not been fully elucidated to date. So, this study aims to clarify the function and significance of primary cultured pituitary adenoma-derived tumor-associated fibroblasts on rat pituitary adenoma cells. We identified primary cultured tumor-associated fibroblasts and normal fibroblasts based on the expression of α-smooth muscle actin as well as morphology...
November 8, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29116483/pittsburgh-compound-b-pib-pet-imaging-of-meningioma-and-other-intracranial-tumors
#17
Derek R Johnson, Christopher H Hunt, Mark A Nathan, Joseph E Parisi, Bradley F Boeve, Melissa E Murray, David S Knopman, Clifford R Jack, Ronald C Petersen, Val J Lowe, Geoffrey B Johnson
Meningiomas are the most common intracranial tumors. Diagnosis by MRI is generally straightforward, but lack of imaging specificity can present a diagnostic dilemma, particularly in patients with cancer. We report our experience with meningioma identification on Pittsburgh compound B (PiB) PET/CT. Patients who underwent PiB PET/CT from 2006 to 2015 were reviewed to identify those with intracranial tumors. Tumor types were classified by MR appearance, or by pathology when available. Maximum standardized uptake value (SUVmax) measurements of tumor PiB activity were compared across tumor types...
November 8, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29110337/pituitary-atypical-teratoid-rhabdoid-tumor-in-a-patient-with-prolactinoma-a-unique-description
#18
Valeria Barresi, Simona Lionti, Alessandro Raso, Felice Esposito, Salvatore Cannavò, Filippo F Angileri
Atypical teratoid rhabdoid tumor (ATRT) is an aggressive tumor of the CNS and characteristically occurs in the pediatric age. In adulthood, ATRT is rare and it is mainly localized in the cerebral hemispheres. Only 16 cases of ATRT have been described in the sellar region up to now. Interestingly, all sellar ATRTs occurred in adult female patients. Herein we report a novel case of sellar ATRT in a patient with previous history of lactotroph adenoma. Similar to other sellar ATRTs, this case occurred in a female adult patient...
November 6, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/29104246/relation-among-aromatase-p450-and-tumoral-growth-in-human-prolactinomas
#19
REVIEW
María José García-Barrado, Enrique J Blanco, María Carmen Iglesias-Osma, Marta Carretero-Hernández, Leonardo Catalano-Iniesta, Virginia Sanchez-Robledo, Manuel Carretero, Julio Joaquín Herrero, Sixto Carrero, José Carretero
The pituitary gland is part of hypothalamic-pituitary-gonadal axis, which controls development, reproduction, and aging in humans and animals. In addition, the pituitary gland is regulated mainly by hormones and neurotransmitters released from the hypothalamus and by systemic hormones secreted by target glands. Aromatase P450, the enzyme responsible for the catabolization of aromatizable androgens to estrogens, is expressed in different parts of body, including the pituitary gland. Moreover, aromatase P450 is involved in sexual dimorphism where alteration in the level of aromatase can initiate a number of diseases in both genders...
November 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29102802/psychosocial-stress-sensitizes-neuroendocrine-and-inflammatory-responses-to-escherichia-coli-challenge-in-domestic-piglets
#20
Margret Tuchscherer, Birger Puppe, Armin Tuchscherer, Ellen Kanitz
Exposure to psychosocial stress can have a profound impact on immune reactivity and health mediated by hypothalamic-pituitary-adrenal (HPA) axis activation. However, current knowledge regarding the mechanisms involved in cross-sensitization between stress and the immune system is limited. Here, we investigated the effects of a single social isolation followed by repeated oral Escherichia coli (E. coli) applications on cortisol, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), haptoglobin and C-reactive protein (CRP) concentrations in the blood; on clinical signs of disease; and on mRNA expression of the glucocorticoid receptor (GR), mineralocorticoid receptor (MR), 11β-hydroxysteroid dehydrogenase 1 and 2 (11β-HSD1 and 11β-HSD2), TNF-α and IL-6 in the hypothalamus, prefrontal cortex (PFC) and spleen of 7-, 21- and 35-day-old piglets...
November 1, 2017: Brain, Behavior, and Immunity
keyword
keyword
31983
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"