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https://www.readbyqxmd.com/read/28926566/guidelines-for-the-management-of-a-brain-death-donor-in-the-rhesus-macaque-a-translational-transplant-model
#1
Tiffany J Zens, Juan S Danobeitia, Peter J Chlebeck, Laura J Zitur, Scott Odorico, Kevin Brunner, Jennifer Coonen, Saverio Capuano, Anthony M D'Alessandro, Kristina Matkowskyj, Weixiong Zhong, Jose Torrealba, Luis Fernandez
INTRODUCTION: The development of a translatable brain death animal model has significant potential to advance not only transplant research, but also the understanding of the pathophysiologic changes that occur in brain death and severe traumatic brain injury. The aim of this paper is to describe a rhesus macaque model of brain death designed to simulate the average time and medical management described in the human literature. METHODS: Following approval by the Institutional Animal Care and Use Committee, a brain death model was developed...
2017: PloS One
https://www.readbyqxmd.com/read/28920920/er-associated-degradation-is-required-for-vasopressin-prohormone-processing-and-systemic-water-homeostasis
#2
Guojun Shi, Diane Somlo, Geun Hyang Kim, Cristina Prescianotto-Baschong, Shengyi Sun, Nicole Beuret, Qiaoming Long, Jonas Rutishauser, Peter Arvan, Martin Spiess, Ling Qi
Peptide hormones are crucial regulators of many aspects of human physiology. Mutations that alter these signaling peptides are associated with physiological imbalances that underlie diseases. However, the conformational maturation of peptide hormone precursors (prohormones) in the ER remains largely unexplored. Here, we report that conformational maturation of proAVP, the precursor for the antidiuretic hormone arginine-vasopressin, within the ER requires the ER-associated degradation (ERAD) activity of the Sel1L-Hrd1 protein complex...
September 18, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28920918/mice-deficient-for-erad-machinery-component-sel1l-develop-central-diabetes-insipidus
#3
Daniel G Bichet, Yoann Lussier
Deficiency of the antidiuretic hormone arginine vasopressin (AVP) underlies diabetes insipidus, which is characterized by the excretion of abnormally large volumes of dilute urine and persistent thirst. In this issue of the JCI, Shi et al. report that Sel1L-Hrd1 ER-associated degradation (ERAD) is responsible for the clearance of misfolded pro-arginine vasopressin (proAVP) in the ER. Additionally, mice with Sel1L deficiency, either globally or specifically within AVP-expressing neurons, developed central diabetes insipidus...
September 18, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28919622/incidence-of-diabetes-insipidus-in-postoperative-period-among-the-patients-undergoing-pituitary-tumour-surgery
#4
M L Kadir, M T Islam, M M Hossain, S Sultana, R Nasrin, M M Hossain
Post operative complications after pituitary tumour surgery vary according to procedure. There are several surgical procedures being done such as transcranial, transsphenoidal microsurgical and transsphenoidal endoscopic approaches. One of the commonest complications is diabetes insipidus (DI). Our main objective was to find out the incidence of diabetes insipidus in post operative period among patients undergoing surgical intervention for pituitary tumour in our institute. The presence of diabetes insipidus in the postoperative period was established by measuring serum Na+ concentration, hourly urine output and urinary specific gravity to find out the incidence of diabetes insipidus in postoperative period in relation to age, gender, tumour diameter, function of tumour (i...
July 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28917091/recovery-from-diabetes-insipidus-and-preservation-of-thyroid-function-after-craniopharyngioma-removal-and-pituitary-stalk-sectioning
#5
Yoshikazu Ogawa, Kuniyasu Niizuma, Teiji Tominaga
OBJECTIVES: Craniopharyngioma is a slow-growing tumor, but long-term tumor control with maintenance of quality of life is sometimes very difficult to achieve, and hypothalamic disturbance should be strictly avoided in the treatment. However, management of the pituitary gland and/or pituitary stalk varies among surgeons and institutions. PATIENTS AND METHODS: This retrospective review identified 44 patients, 24 males and 20 females with craniopharyngiomas who were initially treated by surgery through the extended transsphenoidal approach with pituitary stalk sectioning at a single institute...
September 9, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28916976/preoperative-risk-factors-for-postoperative-complications-in-endoscopic-pituitary-surgery-a-systematic-review
#6
REVIEW
Daniel J Lobatto, Friso de Vries, Amir H Zamanipoor Najafabadi, Alberto M Pereira, Wilco C Peul, Thea P M Vliet Vlieland, Nienke R Biermasz, Wouter R van Furth
BACKGROUND: The ability to preoperatively predict postoperative complication risks is valuable for individual counseling and (post)operative planning, e.g. to select low-risk patients eligible for short stay surgery or those with higher risks requiring special attention. These risks however, are not well established in pituitary surgery. METHODS: We conducted a systematic review of associations between preoperative characteristics and postoperative complications of endoscopic transsphenoidal surgery according to the PRISMA guidelines...
September 15, 2017: Pituitary
https://www.readbyqxmd.com/read/28914872/-the-efficacy-of-desmopressin-in-the-treatment-of-central-diabetes-insipidus-after-resection-of-chiasmo-sellar-region-tumors
#7
L I Astaf'eva
Central diabetes insipidus (CDI) is a neuroendocrine disease, the pathogenesis of which is associated with abnormal secretion of the antidiuretic hormone. One of the specific causes of CDI is neurosurgical resection of chiasmatic-sellar region tumors. AIM: to study the efficacy and safety of desmopressin in CDI patients after resection of chiasmatic-sellar region (CSR) tumors. MATERIAL AND METHODS: Examination and treatment of patients were performed at a hospital for 7-14 days after surgery and then were continued after discharge...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28913667/microsurgical-versus-endoscopic-transsphenoidal-resection-for-acromegaly-a-systematic-review-of-outcomes-and-complications
#8
REVIEW
Ching-Jen Chen, Natasha Ironside, I Jonathan Pomeraniec, Srinivas Chivukula, Thomas J Buell, Dale Ding, Davis G Taylor, Robert F Dallapiazza, Cheng-Chia Lee, Marvin Bergsneider
PURPOSE: The aim of this systematic review is to evaluate the long-term endocrine outcomes and postoperative complications following endoscopic vs. microscopic transsphenoidal resection (TSR) for the treatment of acromegaly. METHODS: A literature review was performed, and studies with at least five patients who underwent TSR for acromegaly, reporting biochemical remission criteria and long-term remission outcomes were included. Data extracted from each study included surgical technique, perioperative complications, biochemical remission criteria, and long-term remission outcomes...
September 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28912999/tacrolimus-aggravated-tube-feeding-syndrome-with-acute-renal-failure-in-a-pediatric-liver-transplant-recipient
#9
R Kula, M Melter, J Kunkel, C Dörfler, S Alikadic, B Knoppke, R Zant
Acute renal failure can be caused by calcineurin inhibitors (CNIs), due to arteriolopathy and altered tubular function. Within this context, we present the case of a 14-month-old liver transplant recipient who suffered an acute polyuric renal failure during a short episode of hypercaloric feeding. In our case, CNI-induced distal RTA led to nephrocalcinosis and therefore to secondary nephrogenic diabetes insipidus. The diet with high renal solute load consequently resulted in an acute polyuric renal failure with severe hypernatremic dehydration...
2017: Case Reports in Transplantation
https://www.readbyqxmd.com/read/28902922/molecular-clustering-of-patients-with-diabetes-and-pulmonary-tuberculosis-a-systematic-review-and-meta-analysis
#10
Francles Blanco-Guillot, Guadalupe Delgado-Sánchez, Norma Mongua-Rodríguez, Pablo Cruz-Hervert, Leticia Ferreyra-Reyes, Elizabeth Ferreira-Guerrero, Mercedes Yanes-Lane, Rogelio Montero-Campos, Miriam Bobadilla-Del-Valle, Pedro Torres-González, Alfredo Ponce-de-León, José Sifuentes-Osornio, Lourdes Garcia-Garcia
INTRODUCTION: Many studies have explored the relationship between diabetes mellitus (DM) and tuberculosis (TB) demonstrating increased risk of TB among patients with DM and poor prognosis of patients suffering from the association of DM/TB. Owing to a paucity of studies addressing this question, it remains unclear whether patients with DM and TB are more likely than TB patients without DM to be grouped into molecular clusters defined according to the genotype of the infecting Mycobacterium tuberculosis bacillus...
2017: PloS One
https://www.readbyqxmd.com/read/28895166/diabetes-insipidus-after-discontinuation-of-vasopressin-infusion-for-septic-shock
#11
H Rana, N Ferguson, P V Dicpinigaitis
WHAT IS KNOWN AND OBJECTIVE: Despite widespread use of vasopressin for the treatment of septic shock, few cases of diabetes insipidus (DI) following its discontinuation have been reported. CASE SUMMARY: A 54-year-old man presented with pneumonia progressing to septic shock, requiring norepinephrine and vasopressin for refractory hypotension. After clinical improvement, the patient on 3 separate occasions developed polyuria and severe hypernatremia upon discontinuation of vasopressin, with prompt recovery upon its resumption...
September 11, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28883880/semi-lobar-holoprosencephaly-with-vertebral-segmentation-defects
#12
Birendra Rai, Farhana Sharif
Holoprosencephaly is the most common embryonic brain defect. Foetuses who survive during intrauterine life are born with varying grades of brain and facial deformities. Extra craniofacial manifestations are common. Vertebral segmentation defects are rarely seen with holoprosencephaly, mainly in association with holoprosencephaly diencephalic hamartoblastoma (HDH) association. A female infant was born at term by normal delivery. Birth head circumference was below the 3rd percentile. Antenatal scan had showed microcephaly as the only abnormality...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/28862548/reoperation-for-growth-hormone-secreting-pituitary-adenomas-report-on-an-endonasal-endoscopic-series-with-a-systematic-review-and-meta-analysis-of-the-literature
#13
João Paulo Almeida, Armando S Ruiz-Treviño, Buqing Liang, Sacit B Omay, Sathwik R Shetty, Yu-Ning Chen, Vijay K Anand, Kartikey Grover, Paul Christos, Theodore H Schwartz
OBJECTIVE Surgery is generally the first-line therapy for acromegaly. For patients with residual or recurrent tumors, several treatment options exist, including repeat surgery, medical therapy, and radiation. Reoperation for recurrent acromegaly has been associated with poor results, with hormonal control usually achieved in fewer than 50% of cases. Extended endonasal endoscopic approaches (EEAs) may potentially improve the results of reoperation for acromegaly by providing increased visibility and maneuverability in parasellar areas...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28859453/comparison-of-complications-trends-and-costs-in-endoscopic-vs-microscopic-pituitary-surgery-analysis-from-a-us-health-claims-database
#14
Anthony O Asemota, Masaru Ishii, Henry Brem, Gary L Gallia
BACKGROUND: Microsurgical and endoscopic techniques are commonly utilized surgical approaches to pituitary pathologies. There are limited data comparing these 2 procedures. OBJECTIVE: To evaluate postoperative complications, associated costs, and national and regional trends of microscopic and endoscopic techniques in the United States employing a nationwide database. METHODS: The Truven MarketScan database 2010 to 2014 was queried and Current Procedural Terminology codes identified patients that underwent microscopic and/or endoscopic transsphenoidal pituitary surgery...
September 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28845039/preoperative-and-postoperative-pituitary-function-in-patients-with-tuberculum-sellae-meningioma-based-on-pituitary-provocation-tests
#15
Shingo Fujio, Hirofumi Hirano, Mami Yamashita, Satoshi Usui, Yasuyuki Kinoshita, Atsushi Tominaga, Tomoko Hanada, Hitoshi Yamahata, Hiroshi Tokimura, Ryosuke Hanaya, Kaoru Kurisu, Kazunori Arita
Given the anatomical proximity of tuberculum sellae meningioma (TSM) to the hypothalamo-pituitary system, pituitary function impairments are of great concern. We retrospectively investigated pituitary function changes following surgery in patients with TSM using pituitary provocation tests (PPTs). Thirty-one patients (27 females and 4 males) with TSM underwent initial transcranial surgery (29 patients) or transsphenoidal surgery (two patients); surgeries were performed carefully to avoid injuring the pituitary stalk...
August 25, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28838874/youtcomes-following-endoscopic-endonasal-resection-of-craniopharyngiomas-in-the-pediatric-population
#16
Vishal S Patel, Andrew Thamboo, Jennifer Quon, Jayakar V Nayak, Peter H Hwang, Michael Edwards, Zara M Patel
BACKGROUND: Craniopharyngiomas have traditionally been treated via open, transcranial approaches. More recently, endoscopic, transsphenoidal approaches have been increasingly utilized; however very few case-series exist in the pediatric population. METHODS: A retrospective review of patients (<18 years) undergoing endoscopic transsphenoidal resection of craniopharyngiomas between 1995 and 2016 was performed. Preoperative data included presenting symptoms, tumor size, location, and components...
August 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28835864/hypokalemic-paralysis-due-to-primary-sj%C3%A3-gren-syndrome-case-report-and-review-of-the-literature
#17
A Garza-Alpirez, A C Arana-Guajardo, J A Esquivel-Valerio, M A Villarreal-Alarcón, D A Galarza-Delgado
Tubulointerstitial nephritis (TIN) is the main renal involvement associated with primary Sjögren syndrome (pSS). TIN can manifest as distal renal tubular acidosis (RTA), nephrogenic diabetes insipidus, proximal tubular dysfunction, and others. We present a 31-year-old female with hypokalemic paralysis due to distal RTA (dRTA). She received symptomatic treatment and hydroxychloroquine with a good response. There is insufficient information on whether to perform a kidney biopsy in these patients or not. The evidence suggests that there is an inflammatory background and therefore a potential serious affection to these patients, such as hypokalemic paralysis...
2017: Case Reports in Rheumatology
https://www.readbyqxmd.com/read/28832172/-metastatic-pituitary-disorders
#18
V Novák, L Hrabálek, M Hampl, J Hoza, Z Fryšák, M Vaverka
BACKGROUND: Pituitary metastases are a rare complication of generalized cancer. Metastases to the pituitary gland occur in only 1% of patients operated on for sellar tumor. The most common presenting symptom in patients with pituitary metastases is diabetes insipidus, whereas this is rare in those with pituitary adenoma. MATERIAL AND METHODS: This publication presents the cases of two patients with pituitary metastases and a systematic review of the literature. English-language publications related to pituitary metastases and published from 1957 to 2016 were identified using the PubMed database...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28825856/the-use-of-variant-maps-to-explore-domain-specific-mutations-of-fgfr1
#19
L A Lansdon, H V Bernabe, N Nidey, J Standley, M J Schnieders, J C Murray
Here we describe the genotype-phenotype correlations of diseases caused by variants in Fibroblast Growth Factor Receptor 1 ( FGFR1) and report a novel, de novo variant in FGFR1 in an individual with multiple congenital anomalies. The proband presented with bilateral cleft lip and palate, malformed auricles, and bilateral ectrodactyly of his hands and feet at birth. He was later diagnosed with diabetes insipidus, spastic quadriplegia, developmental delay, agenesis of the corpus callosum, and enlargement of the third cerebral ventricle...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28822390/physiologic-features-of-brain-death
#20
Eno-Obong Essien, Kristina Fioretti, Thomas M Scalea, Deborah M Stein
Brain death is known to be associated with physiologic derangements but their incidence is poorly described. Knowledge of the changes that occur during brain death is important for management of the potential organ donor. Thus, we sought to characterize the pathophysiology that occurs during brain death in patients with traumatic injuries. All brain-dead patients over a 10-year period were identified from the trauma registry at a level 1 urban trauma center. Patient demographics, injury characteristics, and clinical data for defining organ dysfunction were reviewed for the 24 hours surrounding brain-death declaration...
August 1, 2017: American Surgeon
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