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parathyroid-like hormone

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https://www.readbyqxmd.com/read/28508612/the-longevity-hormone-klotho-is-a-new-player-in-the-interacion-of-the-growth-hormone-insulin-like-growth-factor-1-axis
#1
Tami Rubinek, Ido Wolf, Dalit Modan-Moses
Klotho was first discovered as an aging-suppressor gene. Mice that do not express klotho die prematurely with multiple symptoms of aging, several of which are also characteristic of decreased GH/IGF-1 axis activity. Klotho is highly expressed in the brain, the kidney, and parathyroid and pituitary glands, but can also serve as a circulating hormone by its shedding, forming soluble klotho (sKlotho) that can be detected in blood, cerebrospinal fluid and urine. Several lines of evidence suggest an association between klotho levels and activity of the GH/IHG-1 axis: The GH-secreting cells in the anterior pituitary of klotho-deficient mice are hypotrophic; klotho levels are altered in subjects with pathologies of the GH/IGF-1 axis; and accumulating data indicate that klotho is a direct regulator of GH secretion...
September 2016: Pediatric Endocrinology Reviews: PER
https://www.readbyqxmd.com/read/28497088/pulmonary-hypertension-among-patients-undergoing-hemodialysis
#2
Fatemeh Hayati, Seyed Seifollah Beladi Mousavi, Seyed Majid Mousavi Movahed, Maryam Mofrad Bushehri
Introduction: The epidemiology of pulmonary hypertension (PHT) among long-term hemodialysis patients has been described in relatively small studies in Iran. Objectives: The purpose of this study was to evaluate the prevalence of PHT and its relationship among end-stage renal disease (ESRD) patients undergoing long-term hemodialysis (HD). Patients and Methods: In a cross-sectional study, patients with ESRD treated with HD for at least 3 months in the Imam hospital enrolled for the study. PHT was defined as an estimated systolic pulmonary artery pressure (PAP) equal to or higher than 25 mm Hg using echocardiograms performed by cardiologist...
2017: Journal of Renal Injury Prevention
https://www.readbyqxmd.com/read/28490422/cftr-mediated-anion-secretion-across-intestinal-epithelium-like-caco-2-monolayer-under-pth-stimulation-is-dependent-on-intermediate-conductance-k-channels
#3
Walailak Jantarajit, Kornkamon Lertsuwan, Jarinthorn Teerapornpuntakit, Nateetip Krishnamra, Narattaphol Charoenphandhu
Parathyroid hormone (PTH), a pleiotropic hormone that maintains mineral homeostasis, is also essential for controlling pH balance and ion transport across renal and intestinal epithelia. Optimization of luminal pH is important for absorption of trace elements, e.g., calcium and phosphorus. We have previously demonstrated that PTH rapidly stimulated electrogenic HCO3(-) secretion in intestinal epithelial-like Caco-2 monolayer, but the underlying cellular mechanism, contributions of other ions, particularly Cl(-) and K(+), and long-lasting responses are not completely understood...
May 10, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28482269/skeletal-growth-and-bone-mineral-acquisition-in-type-1-diabetic-children-abnormalities-of-the-gh-igf-1-axis
#4
REVIEW
Manish Raisingani, Brar Preneet, Brenda Kohn, Shoshana Yakar
Type 1 diabetes mellitus (T1DM) is one of the most common chronic diseases diagnosed in childhood. Childhood and adolescent years are also the most important period for growth in height and acquisition of skeletal bone mineral density (BMD). The growth hormone (GH)/insulin like growth factor -1 (IGF-1) axis which regulates growth, is affected by T1DM, with studies showing increased GH and decreased IGF-1 levels in children with T1DM. There is conflicting data as to whether adolescents with TIDM are able to achieve their genetically-determined adult height...
April 28, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28474257/a-cumulative-effect-involving-malfunction-of-the-pth1r-and-atp4a-genes-explains-a-familial-gastric-neuroendocrine-tumor-with-hypothyroidism-and-arthritis
#5
Oriol Calvete, Maite Herraiz, Jose Reyes, Ana Patiño, Javier Benitez
BACKGROUND: Type I gastric neuroendocrine tumors (gNETs) classically arise because of hypergastrinemia and involve destruction of parietal cells, which are responsible for gastric acid secretion through the ATP4A proton pump and for intrinsic factor production. METHODS: By whole exome sequencing, we studied a family with three members with gNETs plus hypothyroidism and rheumatoid arthritis to uncover their genetic origin. RESULTS: A heterozygous missense mutation in the ATP4A gene was identified...
May 4, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28473946/fahr-s-syndrome-misdiagnosed-as-schizophrenia-a-case-report
#6
Syeda Naqvi, Samiullah Arshad, Rida Hanif, Khaled Abdelmaqsoud Hamed Elfert
Fahr's syndrome is a rare disease entity which presents with multiple neurological symptoms like movement disorder or cognitive impairment. We describe a case of a young male patient who presented with symptoms mimicking schizophrenia. He failed to improve despite medical management. He developed an episode of seizure which prompted us to make a computed tomography (CT) scan of the brain, revealing bilateral calcification of basal ganglia, despite normal serum calcium and parathyroid hormone (PTH) levels. This case experience explains the need to rule out all pathological causes of hallucinations before making a diagnosis of schizophrenia...
March 2, 2017: Curēus
https://www.readbyqxmd.com/read/28465969/study-of-vitamin-d-status-in-patients-with-dilated-cardiomyopathy-at-a-teaching-hospital-in-north-india
#7
S Priya, Zeba Siddiqi, Ritu Karoli, Jalees Fatima, Saumya Gupta, Ritu Mishra
BACKGROUND/INTRODUCTION: Recent studies have indicated a much broader role to Vitamin D than simply the regulation of calcium metabolism alone. Vitamin D likely confers physiologically relevant pleiotropic functions that include cardioprotective and immunomodulatory effect, and its deficiency could lead to increased risk of cardiovascular disease and heart failure. AIM: The aim of our work was to evaluate the presence of hypovitaminosis D in patients with dilated cardiomyopathy (DCMP) and to study any correlation of echocardiographic parameters with Vitamin D deficiency...
July 2016: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28456365/medication-management-after-intramedullary-nailing-of-atypical-fractures
#8
Jean-Marc Feron, Adeline Cambon-Binder
Long term use of bisphosphonates (BPs) in osteoporotic patients may be associated with stress fractures of the sub-trochanteric and shaft area of the femur, so called "atypical" femoral fractures (AFF). Specific diagnosis criteria have been defined with 5 major features; the presence of four of them characterizes the AFF. Once a complete fracture occurred, the best surgical treatment is closed reduction and intra medullary nailing. The BPs treatment should be stopped immediately after an AFF occurred. Dietary calcium and vitamin D status should be assessed, and adequate supplementation prescribed...
April 26, 2017: Injury
https://www.readbyqxmd.com/read/28429550/parathyroid-hormone-targets-in-chronic-kidney-disease-and-managing-severe-hyperparathyroidism
#9
Carmel M Hawley, Stephen G Holt
Appropriate targets for parathyroid hormone (PTH) in patients with chronic kidney disease (CKD) stages 3-5D are controversial, as are the means by which these targets might be achieved. Secondary hyperparathyroidism is linked to symptoms like bone pain and itch, in addition to less clinically overt issues like bone fragility as well as vascular and soft tissue calcification which may lead to adverse hard endpoints, particularly fracture and death. Recognized therapies for managing a rising PTH include vitamin D analogues, with or without calcimimetic (where available), in addition to management of serum mineral concentrations with diet, binders and dialysis...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28408643/gastrin-induces-parathyroid-hormone-like-hormone-expression-in-gastric-parietal-cells
#10
Asma Al Menhali, Theresa M Keeley, Elise S Demitrack, Linda C Samuelson
Parietal cells play a fundamental role in stomach maintenance, not only by creating a pathogen-free environment through the production of gastric acid, but also by secreting growth factors important for homeostasis of the gastric epithelium. The gastrointestinal hormone gastrin is known to be a central regulator of both parietal cell function and gastric epithelial cell proliferation and differentiation. Our previous gene expression profiling studies of mouse stomach identified parathyroid hormone-like hormone (PTHLH) as a potential gastrin-regulated gastric growth factor...
April 13, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28400273/the-role-of-vitamin-d-in-the-endocrinology-controlling-calcium-homeostasis
#11
REVIEW
James C Fleet
Vitamin D and its' metabolites are a crucial part of the endocrine system that controls whole body calcium homeostasis. The goal of this hormonal control is to regulate serum calcium levels so that they are maintained within a very narrow range. To achieve this goal, regulatory events occur in coordination at multiple tissues, e.g. the intestine, kidney, bone, and parathyroid gland. Production of the vitamin D endocrine hormone, 1,25 dihydroxyvitamin D (1,25(OH)2 D) is regulated by habitual dietary calcium intake and physiologic states like growth, aging, and the menopause...
April 9, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28384917/delayed-post-surgical-hypoparathyroidism-the-forgotten-chameleon
#12
Sangita Deepak Kamath, Balllamudi Srinivas Rao
Delayed hypoparathyroidism, due to accidental gland removal or ischemia of parathyroids can present many years after thyroidectomy and symptoms may be non-specific. This condition, if not diagnosed timely, may prove fatal and have serious consequences. Hence, clinicians must have a high index of suspicion to treat this condition. All patients with a history of previous thyroid surgery, who come with vague symptoms like fatigue, muscle aches should undergo estimation of serum calcium, phosphorus and Parathyroid Hormone (PTH) due to the lack of any pathognomonic features of hypoparathyroidism...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28384340/parathyroid-hormone-and-vitamin-d-are-associated-with-the-risk-of-metabolic-obesity-in-a-middle-aged-and-older-korean-population-with-preserved-renal-function-a-cross-sectional-study
#13
Jeonghoon Ha, Kwanhoon Jo, Dong-Jun Lim, Jung-Min Lee, Sang-Ah Chang, Moo I L Kang, Bong Yun Cha, Min-Hee Kim
BACKGROUND: In general, obesity is a major contributor to metabolic syndrome (MetS) and is associated with insulin resistance (IR). Metabolically obese but normal weight (MONW) individuals present metabolic abnormalities and features of MetS despite having a normal range of body mass index (BMI). In recent years, different subtypes of obesity have been introduced, including metabolically healthy obese (MHO) and metabolically obese obese (MOO). Also, it has been reported that vitamin D and parathyroid hormone (PTH) are possibly linked with MetS...
2017: PloS One
https://www.readbyqxmd.com/read/28376076/effects-of-growth-hormone-treatment-on-growth-plate-bone-and-mineral-metabolism-of-young-rats-with-uremia-induced-by-adenine
#14
Débora Claramunt, Helena Gil-Peña, Rocío Fuente, Enrique García-López, Olaya Hernández Frías, Flor A Ordoñez, Julián Rodríguez-Suárez, Fernando Santos
BackgroundIn a model of growth retardation secondary to chronic kidney disease (CKD) induced by adenine, this study explores the effects of growth hormone (GH) therapy on growth plate and mineral metabolism.MethodsWeaning female rats receiving a 0.5% adenine diet during 21 days, untreated (AD) or treated with GH (ADGH) for 1 week, were compared with control rats receiving normal diet, either ad libitum or pair-fed with AD animals. AD and ADGH rats had similarly elevated serum concentrations of urea nitrogen, parathyroid hormone (PTH), and fibroblast growth factor 23 (FGF23)...
April 26, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28341898/functional-block-of-il-17-cytokine-promotes-bone-healing-by-augmenting-foxo1-and-atf4-activity-in-cortical-bone-defect-model
#15
M Dixit, K B Singh, R Prakash, D Singh
We determine the effect of interleukin (IL)-17 neutralizing antibody on new bone regeneration. Anti-IL-17 antibody promoted new bone regeneration in cortical bone defect model by augmenting FOXO1 and ATF4 activity thereby decreasing oxidative stress. Our study demonstrates the bone healing and regeneration potential of neutralizing IL-17antibody in osteoporotic fractures. INTRODUCTION: The immune system plays important role in the fracture healing process. However, fracture healing is prolonged in disorders associated with systemic inflammation...
March 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28337879/effects-of-human-parathyroid-hormone-on-bone-morphogenetic-protein-signal-pathway-following-spinal-fusion-in-diabetic-rats
#16
S Q Wu, S Z Ma, C Zhang, D Q Li, C Z Gao
Osteoporosis is a major complication in patients with diabetes mellitus. Thus, it is crucial to study the signal mechanisms responsible for enhancement of bone mass in diabetes. Administration of human parathyroid hormone (hPTH) has been reported to prevent osteoblast apoptosis and have anabolic effects on bone in animals and humans. In the present study, we examined the effects of hPTH on expression of bone morphogenetic protein type 2 (BMP-2) and its receptor BMPR2 in diabetic rats following spinal fusion...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28331027/malignant-hypercalcaemia-related-to-parathyroid-hormone-related-peptide-pthrp-secretion-from-a-metastatic-pancreatic-neuroendocrine-tumour-net
#17
Megan Symington, Louise Davies, Gregory Kaltsas, Martin O Weickert
A 54-year-old woman presented to our centre with acute abdominal pain and vomiting. Routine blood tests showed severe hypercalcaemia (>4 mmol/L). Serum parathyroid hormone (PTH) was suppressed. CT scan detected a pancreatic mass and some liver lesions, initially suspicious for metastatic pancreatic adenocarcinoma. Liver biopsy however revealed the presence of a well-differentiated, grade 1, metastatic neuroendocrine tumour (NET) where prognosis is considerably better. Serum PTHrP was raised, indicating paraneoplastic hypercalcaemia, most likely secondary to the pancreatic NET...
March 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28325144/therapeutic-potential-and-outlook-of-alternative-medicine-for-osteoporosis
#18
Tao Wang, Qian Liu, William Tjhioe, Jinmin Zhao, Aiping Lu, Ge Zhang, Renxiang Tan, Mengyu Zhou, Jiake Xu, Haotian Feng
Osteoporosis, a bone disease resulting in loss of bone density and microstructure quality, is often associated with fragility fractures, and the latter imposes a great burden on the patient and society. Although there are several different treatments available for osteoporosis such as hormone replacement therapy, bisphosphonates, Denosumab, and parathyroid hormone some concern has been raised regarding the inherent side effects of their long term use. It would be of great relevance to search for alternative natural compounds, which could complementarily overcome the limitations of the currently available therapy...
March 21, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28324013/acute-parathyroid-hormone-injection-increases-c-terminal-but-not-intact-fibroblast-growth-factor-23-levels
#19
V M Knab, B Corbin, O Andrukhova, J M Hum, P Ni, S Rabadi, A Maeda, K E White, R G Erben, H Jüppner, M Christov
The acute effects of PTH on FGF23 in vivo are not well understood. After a single s.c. PTH(1-34) injection (50nmol/kg) in mice, FGF23 levels were assessed in plasma using assays that measure either intact alone (iFGF23) or intact/C-terminal FGF23 (cFGF23). Furthermore, FGF23 mRNA and protein levels were assessed in bone. In addition, we examined the effects of PTH treatment on FGF23 production in vitro using differentiated calvarial osteocyte-like cells. cFGF23 levels increased by 3-5-fold within two hours following PTH injection, which returned to baseline by 4 hours...
January 23, 2017: Endocrinology
https://www.readbyqxmd.com/read/28303448/parathyroid-hormone-and-parathyroid-hormone-related-protein-analogs-in-osteoporosis-therapy
#20
REVIEW
Benjamin Z Leder
PURPOSE OF REVIEW: The purpose is to review the efficacy and optimal use of parathyroid hormone and parathyroid hormone-related protein analogs in osteoporosis treatment. RECENT FINDINGS: The parathyroid hormone analog teriparatide, a potent stimulator of bone remodeling, increases hip and spine bone mineral density and reduces the risk of vertebral and non-vertebral fractures in postmenopausal osteoporotic women. The parathyroid hormone-related protein analog, abaloparatide, also reduces fracture incidence but has pharmacological effects that differ from teriparatide, particularly in cortical bone...
April 2017: Current Osteoporosis Reports
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