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https://www.readbyqxmd.com/read/27932204/total-renal-denervation-reduces-sympathoexcitation-to-different-target-organs-in-a-model-of-chronic-kidney-disease
#1
REVIEW
Glaucia L Veiga, Erika E Nishi, Heder F Estrela, Gisele S Lincevicius, Guiomar N Gomes, Alex Y Simões Sato, Ruy R Campos, Cássia T Bergamaschi
It is known that increased sympathetic nerve activity in chronic kidney disease (CKD) progressively worsens kidney function and hypertension. We tested the hypothesis that total renal denervation contributes to reduce sympathetic activation to different beds and improves renal function in 5/6 nephrectomy model of CKD in male Wistar rats. After eight weeks of 5/6 nephrectomy surgery there was an increase in mean arterial pressure (CKD 179±22mmHg, n=6 vs. control animals 108±9; p<0.05, n=6) with no changes in heart rate (HR)...
December 1, 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27928396/unusual-cause-of-horner-syndrome-13-years-after-in-situ-ductal-carcinoma
#2
Di Zhou, Mohannad Ibrahim, Daniel Malach, Robert L Tomsak
Horner syndrome can be caused by a wide range of pathologies along the sympathetic nerve chain, from the hypothalamus to the orbit. Imaging workup of Horner syndrome is necessary given the potential for deadly lesions, especially in a patient with a previous cancer history. The authors report a case of a woman who presented with a preganglionic Horner syndrome secondary to vertebral metastasis from previously diagnosed breast cancer that involved the neural foramina at T1 and T2.
June 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27923789/influence-of-sympathetic-nerve-activity-on-aortic-hemodynamics-and-pulse-wave-velocity-in-women
#3
Ronee E Harvey, Jill N Barnes, Emma C J Hart, Wayne T Nicholson, Michael J Joyner, Darren P Casey
Central (aortic) blood pressure, arterial stiffness, and sympathetic nerve activity increase with age in women. However, it is unknown if the age-related increase in sympathetic activity influences aortic hemodynamics and carotid-femoral pulse wave velocity (cfPWV), an index of central aortic stiffness. The goal of this study was to determine if aortic hemodynamics and cfPWV are directly influenced by sympathetic nerve activity by measuring aortic hemodynamics, cfPWV, and muscle sympathetic nerve activity (MSNA) in women before and during autonomic ganglionic blockade with trimethaphan camsylate...
December 6, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27922849/renal-denervation-for-uncontrolled-hypertension-critical-review-of-the-evidence
#4
Chongjia Chen, Ashish Upadhyay
PURPOSE OF REVIEW: Hypertension (HTN) is a major global public health problem. Endovascular catheter-based radiofrequency ablation of renal sympathetic nerve endings (renal denervation) is a novel treatment option for uncontrolled HTN. RECENT FINDINGS: Early clinical studies primarily in Australia and Europe established renal denervation as a well tolerated and feasible procedure that resulted in a sustained reduction in blood pressure among individuals with severe resistant HTN...
December 2, 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27922125/an-er%C3%AE-agonist-induces-browning-of-subcutaneous-abdominal-fat-pad-in-obese-female-mice
#5
Yi-Fei Miao, Wen Su, Yu-Bing Dai, Wan-Fu Wu, Bo Huang, Rodrigo P A Barros, Hao Nguyen, Laure Maneix, You-Fei Guan, Margaret Warner, Jan-Åke Gustafsson
Estrogen, via estrogen receptor alpha (ERα), exerts several beneficial effects on metabolism and energy homeostasis by controlling size, enzymatic activity and hormonal content of adipose tissue. The actions of estrogen on sympathetic ganglia, which are key players in the browning process, are less well known. In the present study we show that ERβ influences browning of subcutaneous adipose tissue (SAT) via its actions both on sympathetic ganglia and on the SAT itself. A 3-day-treatment with a selective ERβ agonist, LY3201, induced browning of SAT in 1-year-old obese WT and ERα(-/-) female mice...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27919794/diagnostic-utility-of-contrast-enhanced-3d-t1-weighted-imaging-in-acute-cerebral-infarction-associated-with-graves-disease
#6
Yasufumi Gon, Manabu Sakaguchi, Naoki Oyama, Hideki Mochizuki
Graves disease is rarely complicated with cerebrovascular steno-occlusive diseases. Previous studies have suggested several hypotheses for this occurrence, including excess thyroid hormone, which stimulates the sympathetic nervous system, which in turn causes an abnormal hemodynamic response with consequent atherosclerotic changes, and antithyroid antibodies cause local vascular inflammation in patients with Graves disease. However, radiological findings of vasculitis in patients with Graves disease and cerebral infarction remain less known...
December 2, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27919011/cardiovascular-autonomic-and-hemodynamic-responses-to-vagus-nerve-stimulation-in-drug-resistant-epilepsy
#7
Iñigo Garamendi, Marian Acera, Marta Agundez, Lara Galbarriatu, Ainhoa Marinas, Iñigo Pomposo, Elena Valle, Jose-Alberto Palma, Juan C Gomez-Esteban
PURPOSE: Vagus nerve stimulation (VNS) is used as an adjunctive therapy for treating patients with drug-resistant epilepsy. The impact of VNS on cardiovascular autonomic function remains to be fully understood. We determined changes in cardiovascular sympathetic and parasympathetic, and hemodynamic function in association with VNS in patients with drug-resistant focal epilepsy. METHOD: Longitudinal (n=15) evaluation of beat-to-beat blood pressure (BP) and heart rate variability (HRV), baroreflex sensibility, and hemodynamic function performed before VNS implantation, 6-months after implantation, and a mean of 12-months after implantation; and cross-sectional study (n=14) of BP and HR variability and baroreflex sensitivity during VNS on and VNS off...
December 2, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/27917928/renal-denervation-improves-the-baroreflex-and-gaba-system-in-chronic-kidney-disease-induced-hypertension
#8
Hsin-Hung Chen, Pei-Wen Cheng, Wen-Yu Ho, Pei-Jung Lu, Chi-Cheng Lai, Yang-Ming Tseng, Hua-Chang Fang, Gwo-Ching Sun, Michael Hsiao, Chun-Peng Liu, Ching-Jiunn Tseng
Hypertensive rats with chronic kidney disease (CKD) exhibit enhanced gamma-aminobutyric acid (GABA)B receptor function and regulation within the nucleus tractus solitarii (NTS). For CKD with hypertension, renal denervation (RD) interrupts the afferent renal sympathetic nerves, which are connecting to the NTS. The objective of the present study was to investigate how RD improves CKD-induced hypertension. Rats underwent 5/6 nephrectomy for 8 weeks, which induced CKD and hypertension. RD was induced by applying phenol to surround the renal artery in CKD...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27916722/unique-diagnostic-features-and-surgical-strategy-for-intracranial-carotid-sympathetic-plexus-schwannoma-case-report-and-literature-review
#9
Hajime Takase, Kohta Araki, Shunsuke Seki, Kana Takase, Hidetoshi Murata, Nobutaka Kawahara
BACKGROUND: Intracranial carotid sympathetic plexus schwannoma (CSPS) is extremely rare; thus differential diagnostic criteria, optimal surgical strategies, and even a precise definition are lacking. Here we describe a case of CSPS and propose a definition and classification for previously reported cases. CASE DESCRIPTION: A 54-year-old male presented with hypacusis and abducens nerve palsy. Radiological examinations revealed a well-enhanced mass at the right medial temporal base with erosion of the petrous apex and intact perilesional cortical bone...
December 1, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27913968/post-ganglionic-autonomic-neuropathy-associated-with-anti-glutamic-acid-decarboxylase-antibodies
#10
E Fileccia, R Rinaldi, R Liguori, A Incensi, R D'Angelo, M P Giannoccaro, V Donadio
PURPOSE: Antibodies to glutamic acid decarboxylase (GAD-Abs) have been associated with several conditions, rarely involving the autonomic nervous system. Here, we describe two patients complaining of autonomic symptoms in whom a post-ganglionic autonomic neuropathy has been demonstrated in association with significantly elevated serum and CSF GAD-Abs levels. METHODS: Patients underwent nerve conduction studies, sympathetic skin response testing, evaluation of autonomic control of the cardiovascular system and skin biopsy...
December 2, 2016: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/27911934/efficacy-of-noninvasive-stellate-ganglion-blockade-performed-using-physical-agent-modalities-in-patients-with-sympathetic-hyperactivity-associated-disorders-a-systematic-review-and-meta-analysis
#11
Chun-De Liao, Jau-Yih Tsauo, Tsan-Hon Liou, Hung-Chou Chen, Chi-Lun Rau
BACKGROUND: Stellate ganglion blockade (SGB) is mainly used to relieve symptoms of neuropathic pain in conditions such as complex regional pain syndrome and has several potential complications. Noninvasive SGB performed using physical agent modalities (PAMs), such as light irradiation and electrical stimulation, can be clinically used as an alternative to conventional invasive SGB. However, its application protocols vary and its clinical efficacy remains controversial. This study investigated the use of noninvasive SGB for managing neuropathic pain or other disorders associated with sympathetic hyperactivity...
2016: PloS One
https://www.readbyqxmd.com/read/27911674/cross-sectional-imaging-anatomy-and-pathologic-conditions-affecting-thoracic-nerves
#12
Kristopher W Cummings, Sreevathsan Sridhar, Matthew S Parsons, Cylen Javidan-Nejad, Sanjeev Bhalla
While in many cases they are not directly visualized, awareness of the thoracic nerves and their courses at cross-sectional imaging is important for radiologists. An understanding of the normal function of each nerve is important, as many patients present with neurologic signs and symptoms that can be used to reinforce search patterns for disease and detection of supportive radiologic abnormalities. In the case of primary neoplasms, understanding the expected presence of a nerve in the location of a mass can enhance and improve the accuracy of differential diagnoses...
December 2, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27909989/orexin-and-central-modulation-of-cardiovascular-and-respiratory-function
#13
Pascal Carrive, Tomoyuki Kuwaki
Orexin makes an important contribution to the regulation of cardiorespiratory function. When injected centrally under anesthesia, orexin increases blood pressure, heart rate, sympathetic nerve activity, and the amplitude and frequency of respiration. This is consistent with the location of orexin neurons in the hypothalamus and the distribution of orexin terminals at all levels of the central autonomic and respiratory network. These cardiorespiratory responses are components of arousal and are necessary to allow the expression of motivated behaviors...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27908780/complexity-of-sympathetic-nerve-traffic-in-human-heart-failure-seeking-inspiration
#14
EDITORIAL
John S Floras, Noe Zamel
No abstract text is available yet for this article.
November 28, 2016: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/27908698/potential-role-of-endurance-training-in-altering-renal-sympathetic-nerve-activity-in-ckd
#15
REVIEW
Erin J Howden, Justin S Lawley, Murray Esler, Benjamin D Levine
Chronic kidney disease (CKD), is characterized by a progressive loss of renal function and increase in cardiovascular risk. In this review paper, we discuss the pathophysiology of increased sympathetic nerve activity in CKD patients and raise the possibility of endurance exercise being an effective countermeasure to address this problem. We specifically focus on the potential role of endurance training in altering renal sympathetic nerve activity as increased renal sympathetic nerve activity negatively impacts kidney function as well indirectly effects multiple other systems and organs...
November 25, 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27908212/are-crh-ngf-as-psychoneuroimmune-regulators-in-women-with-polycystic-ovary-syndrome
#16
F Z Zangeneh, M M Naghizadeh, M Bagheri, M Jafarabadi
PURPOSE: Polycystic ovary syndrome (PCOS) affects quality of life and can worsen anxiety and depression either due to the features of PCOS or due to the diagnosis of a chronic disease. Corticotrophin-releasing hormone (CRH) and nerves growth factor (NGF) are the modulator for the actions of the sympathetic nervous and immune systems. METHODS: In total, 171 women divided into two groups: study and control groups. Serum CRH, NGF, and interleukins: IL-1α. IL-1β, 17A, and TNFα were determined by ELISA Kits in both groups...
December 2, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27906839/endothelin-contributes-to-the-blood-pressure-rise-triggered-by-hypoxia-in-severe-obstructive-sleep-apnea
#17
Christophe Janssen, Atul Pathak, Guido Grassi, Philippe van de Borne
BACKGROUND: Obstructive sleep apnea (OSA) is strongly correlated with an increased risk of systemic hypertension. However, the link between systemic hypertension and nocturnal apneas remains incompletely understood. Animal studies suggest an implication of the endothelin system. The aim of the present study is to determine if endogenous endothelin plays a role in the increase in blood pressure observed during hypoxic episodes in OSA patients, in addition to peripheral chemoreflex and neural sympathetic activation...
January 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27906749/sodium-and-potassium-in-the-pathogenesis-of-hypertension-focus-on-the-brain
#18
Horacio J Adrogué, Nicolaos E Madias
PURPOSE OF REVIEW: Primary hypertension is characterized by Na excess and K deficit in the body, which together are key to its pathogenesis. These derangements work jointly in the brain and the peripheral vascular wall to establish hypertension. In this review, we highlight recent evidence describing the central mechanisms through which Na surfeit and K deficit enhance sympathetic nerve activity, thereby raising peripheral vascular resistance and generating hypertension. RECENT FINDINGS: Animal studies point to a small increase in plasma and cerebrospinal fluid (CSF) [Na], a small decrease in CSF [K], and increased levels of circulating angiotensin II, aldosterone, and endogenous ouabain as the central signals evoking hypertension...
December 2, 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27906714/central-nervous-system-regulation-of-hepatic-lipid-and-lipoprotein-metabolism
#19
Jennifer Taher, Sarah Farr, Khosrow Adeli
PURPOSE OF REVIEW: Hepatic lipid and lipoprotein metabolism is an important determinant of fasting dyslipidemia and the development of fatty liver disease. Although endocrine factors like insulin have known effects on hepatic lipid homeostasis, emerging evidence also supports a regulatory role for the central nervous system (CNS) and neuronal networks. This review summarizes evidence implicating a bidirectional liver-brain axis in maintaining metabolic lipid homeostasis, and discusses clinical implications in insulin-resistant states...
November 30, 2016: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/27905169/finding-inspiration-in-high-blood-pressure
#20
Vaughan Macefield
Simms AE, Paton JFR, Pickering AE & Allen AM (2009). Amplified respiratory-sympathetic coupling in the spontaneously hypertensive rat: does it contribute to hypertension? J Physiol 587, 597-610. Fatouleh R, McKenzie DK & Macefield VG (2014). Respiratory modulation of muscle sympathetic nerve activity in obstructive sleep apnoea. Exp Physiol 99, 1288-1298. Zoccal DB (2015). Peripheral chemoreceptors and cardiorespiratory coupling: a link to sympatho-excitation. Exp Physiol 100, 143-148.
December 1, 2016: Experimental Physiology
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