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https://www.readbyqxmd.com/read/28429635/congenital-hypothalamic-hamartoblastoma-versus-hamartoma
#1
C Dunham, D McFadden, L Dahlgren, B Butler, S Hamilton, M McKinnon
Pallister Hall syndrome (PHS) is a rare malformative disorder that is due to truncating functional repressor mutations in GLI3. Since the seminal publication in 1980, hypothalamic tumors have been recognized to be a cardinal feature of PHS. In their original description of the neuropathologic features of PHS, Clarren et al. coined the term "hamartoblastoma" to characterize what they deemed to be a dual malformative and neoplastic mass of the hypothalamus. In subsequent published cases/series of PHS, the term "hamartoma" was often substituted for hamartoblastoma given what appeared to be a benign natural history of this lesion...
January 1, 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28392428/modulation-of-experimental-arthritis-by-vagal-sensory-and-central-brain-stimulation
#2
Gabriel Shimizu Bassi, Daniel Penteado Martins Dias, Marcelo Franchin, Jhimmy Talbot, Daniel Gustavo Reis, Gustavo Batista Menezes, Jaci Airton Castania, Norberto Garcia-Cairasco, Leonardo Barbosa Moraes Resstel, Helio Cesar Salgado, Fernando Queiróz Cunha, Thiago Mattar Cunha, Luis Ulloa, Alexandre Kanashiro
Articular inflammation is a major clinical burden in multiple inflammatory diseases, especially in rheumatoid arthritis. Biological anti-rheumatic drug therapies are expensive and increase the risk of systemic immunosuppression, infections, and malignancies. Here, we report that vagus nerve stimulation controls arthritic joint inflammation by inducing local regulation of innate immune response. Most of the previous studies of neuromodulation focused on vagal regulation of inflammation via the efferent peripheral pathway toward the viscera...
April 6, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28381248/reproductive-hormonal-variations-and-adenohypophyseal-lesions-in-pre-pubertal-buffalo-heifers-inoculated-with-pasteurella-multocida-type-b-2-and-its-immunogens
#3
Faez Firdaus Abdullah Jesse, Hayder Hamzah Ibrahim, Yusuf Abba, Eric Lim Teik Chung, Ali Dhiaa Marza, Mazlina Mazlan, Mohd Zamri-Saad, Abdul Rahman Omar, Md Zuki Abu Bakar Zakaria, Abdul Aziz Saharee, Abd Wahid Haron, Mohd Azmi Mohd Lila
BACKGROUND: Hemorrhagic septicemia is a fatal disease of cattle and buffaloes caused by P. multocida. Although the pathogenesis of the bacteria has been well established in literature, there is a paucity of information on the possible role of the bacteria and its immunogens; lipopolysaccharide (LPS) and outer membrane proteins (OMPs) on the reproductive capacity of buffalo heifers. METHODS: In this study, twenty one healthy prepubertal female buffaloes aged 8 months were divided into seven groups of 3 buffaloes each (G1-G7)...
April 5, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28321600/post-6-ohda-lesion-exposure-to-stress-affects-neurotrophic-factor-expression-and-aggravates-motor-impairment
#4
Phumzile Nomfundo Ngema, Musa Vuyisile Mabandla
Chronic exposure to stress amplifies locomotor deficits and exacerbates dopamine neuron loss in an animal model for Parkinson's disease. The release of neurotrophic factors such as glial cell-line derived neurotrophic factor (GDNF) and neurotrophin-3 (NT-3) following neuronal injury attenuates exacerbated degeneration of these neurons. In this study, the neurotoxin 6-hydroxydopamine (6-OHDA) was injected unilaterally into the medial forebrain bundle of male Sprague Dawley rats. A subset of these rats was subjected to post-lesion restraint stress after which the effect of exposure to stress on locomotor activity (forelimb akinesia test), neurotrophic factor (GDNF and NT-3) and corticosterone concentration was assessed...
March 20, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28259055/hypothalamic-tumors-impact-gray-and-white-matter-volumes-in-fronto-limbic-brain-areas
#5
Jale Özyurt, Hermann L Müller, Monika Warmuth-Metz, Christiane M Thiel
Patients with hypothalamic involvement of a sellar/parasellar tumor often suffer from cognitive and social-emotional deficits that a lesion in the hypothalamus cannot fully explain. It is conceivable that these deficits are partly due to distal changes in hypothalamic networks, evolving secondary to a focal lesion. Focusing on childhood-onset craniopharyngioma patients, we aimed at investigating the impact of hypothalamic lesions on gray and white matter areas densely connected to the hypothalamus, and to relate structural changes to neuropsychological deficits frequently observed in patients...
February 3, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28258131/diagnosis-of-endocrine-disease-expanding-the-cause-of-hypopituitarism
#6
Sandra Pekic, Vera Popovic
Hypopituitarism is defined as one or more pituitary hormone deficits due to a lesion in the hypothalamic-pituitary region. By far, the most common cause of hypopituitarism associated with a sellar mass is a pituitary adenoma. A high index of suspicion is required for diagnosing hypopituitarism in several other conditions such as: other massess in the sellar and parasellar region, brain damage caused by radiation and by traumatic brain injury, vascular lesions, infiltrative/immunological/inflammatory diseases (lymphocytic hypophysitis, sarcoidosis, hemochromatosis), infectious diseases and genetic disorders...
March 3, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28239548/ictal-laughter-and-crying-should-they-be-classified-as-automatisms
#7
Anna-Marieta Moise, Linda Leary, Lola C Morgan, Alex M Papanastassiou, C Ákos Szabó
Gelastic seizures (GS) describe ictal laughter and are associated with hypothalamic lesions, as well as other cortical areas. Dacrystic seizures (DS), characterized by ictal crying, also have been reported in hypothalamic lesions and focal epilepsy. We describe a young girl with drug resistant focal dyscognitive seizures associated with gelastic and dacrystic features. However, neither laughter nor crying was correlated with a stereotyped electroencephalographic (EEG) pattern or involvement of a particular brain region...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28237669/disruption-of-the-hypothalamic-pituitary-thyroid-axis-on-co-exposures-to-dithiocarbamate-and-neonicotinoid-pesticides-study-in-a-wildlife-bird-amandava-amandava
#8
Surya Prakash Pandey, Banalata Mohanty
Non-target organisms, including human and wildlife, are susceptible to deleterious effects of pesticide mixtures in their environment. Present study demonstrated the disruption of the hypothalamic-pituitary-thyroid (HPT) axis in a seasonally breeding wildlife bird Amandava amandava on co-exposure to dithiocarbamate mancozeb/MCZ and neonicotinoid imidacloprid/IMI, at concentrations even lower than respective environmentally realistic exposure level of each of the pesticide. Adult male birds (n=8/group) were exposed individually to 0...
February 22, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28230567/magnetic-resonance-imaging-features-of-solitary-hypothalamitis
#9
Hua Zhang, Jing Wang, Yue Wu, Ying Tang, Ran Tao, Hongying Ye, Zhenwei Yao
OBJECTIVE: The study aimed to characterize magnetic resonance imaging (MRI) findings of solitary hypothalamitis and evaluate their clinical value in diagnosis. METHODS: Magnetic resonance imaging scans, including T1-weighted imaging (T1WI), T2-weighted imaging (T2WI), and contrast-enhanced T1-weighted sequences, of 8 biopsy-proven hypothalamitis lesions were retrospectively analyzed along with MRI features including size, shape, signal intensity, enhancement pattern, correlation with adjacent tissues, and changes in infundibular stalk and sella turcica...
March 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28228069/recent-advances-in-the-gastric-mucosal-protection-against-stress-induced-gastric-lesions-importance-of-renin-angiotensin-vasoactive-metabolites-gaseous-mediators-and-appetite-peptides
#10
Tomasz Brzozowski, Katarzyna Magierowska, Marcin Magierowski, Agata Ptak-Belowska, Robert Pajdo, Slawomir Kwiecien, Rafal Olszanecki, Ryszard Korbut
Stress is known to cause severe adverse effects in the human gastrointestinal tract including mucosal microbleedings and erosions or even gastric ulceration but the mechanism of these complications has not been fully elucidated. The pathogenesis of stress-induced gastric damage involves the fall in gastric blood flow (GBF), an increase in gastric acid secretion and gastric motility, enhanced adrenergic and cholinergic nerve activity and the rise in gastric mucosal generation of reactive oxygen species. The gastric mucosal defense mechanisms against the deleterious effect of stress include the activation of the hypothalamic-pituitary-adrenal axis which has been linked with glucocorticoids release capable of counteracting of stress-induced gastric lesions...
February 20, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28213803/first-experiences-with-neuropsychological-effects-of-oxytocin-administration-in-childhood-onset-craniopharyngioma
#11
Anika Hoffmann, Jale Özyurt, Kristin Lohle, Julia Reichel, Christiane M Thiel, Hermann L Müller
PURPOSE: The hypothalamic hormone oxytocin plays a major role in regulation of behavior and body composition. Quality of survival is frequently impaired in childhood craniopharyngioma patients due to sequelae such as behavioral deficits and severe obesity caused by tumor or treatment-related hypothalamic lesions. METHODS: In our pilot cross-sectional study, we analyzed emotion recognition abilities and oxytocin concentrations in saliva and urine before and after single nasal administration of 24 IU oxytocin in 10 craniopharyngioma patients...
February 17, 2017: Endocrine
https://www.readbyqxmd.com/read/28195308/ca-2-permeable-ampa-receptors-associated-with-epileptogenesis-of-hypothalamic-hamartoma
#12
Hiroki Kitaura, Masaki Sonoda, Sayaka Teramoto, Hiroshi Shirozu, Hiroshi Shimizu, Tadashi Kimura, Hiroshi Masuda, Yosuke Ito, Hitoshi Takahashi, Shin Kwak, Shigeki Kameyama, Akiyoshi Kakita
Hypothalamic hamartoma (HH), composed of neurons and glia without apparent cytologic abnormalities, is a rare developmental malformation in humans. Patients with HH often have characteristic medically refractory gelastic seizures, and intrinsic epileptogenesis within the lesions has been speculated. Herein we provide evidence to suggest that in HH neurons, Ca(2+) permeability through α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors is aberrantly elevated. In needle biopsy specimens of HH tissue, field potential recordings demonstrated spontaneous epileptiform activities similar to those observed in other etiologically distinct epileptogenic tissues...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28185235/impact-of-a-simulated-gravity-load-for-atmospheric-reentry-10%C3%A2-g-for-2%C3%A2-min-on-conscious-mice
#13
Hironobu Morita, Aoi Yamaguchi, Dai Shiba, Masaki Shirakawa, Satoru Takahashi
The Japan Aerospace Exploration Agency recently performed a mouse experiment in the International Space Station in which mice were raised for 35 days, retrieved using the Dragon spacecraft, and then harvested for analysis 2 days after splashdown. However, the impact of the retrieval procedure, which exposed mice to 5-10 g for 2 min during atmospheric reentry and splashdown, was unknown. Therefore, the purpose of this study was to examine the impact of a 10 g load for 2 min (using a gondola-type centrifuge with a 1...
February 9, 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/28181780/diagnosis-treatment-clinical-course-and-prognosis-of-childhood-onset-craniopharyngioma-patients
#14
Hermann L Müller
CONTEXT: For decades gross-total resection was the preferred treatment option in childhood-onset craniopharyngioma, assuming that radical strategies at the time of initial diagnosis and treatment would result in cure. Recent reports on long-term prognosis, novel treatment approaches, and molecular genetics provide new insights into more risk-adapted treatment strategies in order to prevent sequelae such as hypothalamic syndrome. EVIDENCE ACQUISITION: A search for original articles published between 2000 and 2016 was performed in PubMed, Science Citation Index Expanded, EMBASE and Scopus...
February 9, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28168619/pure-endoscopic-management-of-epileptogenic-hypothalamic-hamartomas
#15
S Chibbaro, H Cebula, J Scholly, J Todeschi, I Ollivier, A Timofeev, M Ganau, P Di Emidio, M P Valenti, A M Staack, T Bast, B J Steinhoff, E Hirsch, P Kehrli, F Proust
Hypothalamic hamartomas (HH) are rare congenital malformations located in the region of the tuber cinereum and third ventricle. Their usual clinical presentation is characterized by gelastic/dacrystic seizures which often become pharmaco-resistant and progress to secondary focal/generalized intractable epilepsy causing mostly in children cognitive and behavioral problems (particularly in cases of progressive epileptic encephalopathy) and precocious puberty. Whereas gelastic seizures can be surgically controlled either by resection of the lesion or disconnection (tissue-destructive) procedures, aimed at functionally prevent the spreading of the epileptic burst; generalized seizures tend to respond better to HH excision rather than isolated neocortical resections, which generally fail to control them...
February 7, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28164078/an-11-month-old-girl-with-central-precocious-puberty-caused-by-hypothalamic-hamartoma
#16
Da Young Yoon, Jae Hyun Kim
Central precocious puberty (CPP) is caused by premature activation of the hypothalamic-gonadal axis, and must be treated adequately. In particular, CPP that occurs at a relatively young age or in boys is likely to be caused by an organic lesion. Hypothalamic hamartoma (HH) is the most common organic cause of CPP. The present case report describes an 11-month-old female infant who presented with vaginal bleeding and rapidly progressive secondary sex characteristics from the age of 6 months. She was diagnosed with CPP following the detection of HH via magnetic resonance imaging...
December 2016: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28155902/new-outlook-on-the-diagnosis-treatment-and-follow-up-of-childhood-onset-craniopharyngioma
#17
REVIEW
Hermann L Müller, Thomas E Merchant, Stephanie Puget, Juan-Pedro Martinez-Barbera
Childhood-onset craniopharyngiomas are rare embryonic tumours of low-grade histological malignancy. Novel insights into the molecular pathogenesis of human adamantinomatous craniopharyngioma have started to unveil the possibility of testing novel treatments targeting pathogenic pathways. Hypothalamic involvement and/or treatment-related lesions result in impaired physical and social functionality and in severe neuroendocrine sequelae. Quality of survival in patients with craniopharyngioma with hypothalamic involvement is impaired by severe obesity, physical fatigue and non-optimal psychosocial development...
May 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28108322/effect-of-zbd-2-on-chronic-pain-depressive-like-behaviors-and-recovery-of-motor-function-following-spinal-cord-injury-in-mice
#18
Xiao-Ming Li, Jia Meng, Lin Tao Li, Ting Guo, Liu-Kun Yang, Qi-Xin Shi, Xu-Bo Li, Yong Chen, Qi Yang, Jian-Ning Zhao
In addition to debilitating sensory and motor deficits, patients with spinal cord injury (SCI) may experience chronic hyperpathic pain (SCI-pain). Recent studies have revealed that translocator protein (TSPO) is involved in repairing neural cells as well as reducing anxiety and depression. However, the role of TSPO in SCI-pain and pain-induced depression remains unknown. The present study aimed to determine the effects of a new TSPO ligand, ZBD-2, on SCI-pain and consequent pain-induced depressive-like behaviors in mice...
March 30, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28059655/norman-m-dott-master-of-hypothalamic-craniopharyngioma-surgery-the-decisive-mentoring-of-harvey-cushing-and-percival-bailey-at-peter-bent-brigham-hospital
#19
Ruth Prieto, José M Pascual
Norman McOmish Dott (1897-1973) developed surgical neurology in Edinburgh, Scotland, and was a scholar of worldwide renown. One of Dott's most notable contributions to neurosurgery was his understanding of hypothalamic physiology, mostly acquired through the comprehensive study of patients with lesions involving this region of the diencephalon, particularly craniopharyngiomas (CPs). Recognition of symptoms caused by hypothalamic disturbances allowed him to predict the accurate anatomical relationships between CPs and the hypothalamus, despite the rudimentary radiological methods available during the 1930s...
January 6, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27998231/hypothalamic-pituitary-axis-dysfunction-in-survivors-of-childhood-cns-tumors-importance-of-systematic-follow-up-and-early-endocrine-consultation
#20
Wassim Chemaitilly, Gregory T Armstrong, Amar Gajjar, Melissa M Hudson
The Oncology Grand Rounds series is designed to place original reports published in the Journal into clinical context. A case presentation is followed by a description of diagnostic and management challenges, a review of the relevant literature, and a summary of the authors' suggested management approaches. The goal of this series is to help readers better understand how to apply the results of key studies, including those published in Journal of Clinical Oncology, to patients seen in their own clinical practice...
December 20, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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