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https://www.readbyqxmd.com/read/27892684/angiotensin-receptor-neprilysin-inhibitor-lcz696-pharmacology-pharmacokinetics-and-clinical-development
#1
Yue Hua, Ian Wang, Bin Liu, Darren J Kelly, Christopher Reid, Danny Liew, Yingchun Zhou, Bing H Wang
Heart failure still has a significant disease burden with poor outcomes worldwide despite advances in therapy. The standard therapies have been focused on blockade of renin-angiotensin-aldosterone system with angiotensin-converting enzyme inhibitors, angiotensin receptor blockers and mineralocorticoid antagonists and the sympathetic nervous system with β-blockers. The natriuretic peptide system is a potential counter-regulatory system that promotes vasodilatation and natriuresis. Angiotensin receptor neprilysin inhibitors are a new class drug capable of blocking the renin-angiotensin-aldosterone system and enhancing the natriuretic peptide system to improve neurohormonal balance...
November 28, 2016: Future Cardiology
https://www.readbyqxmd.com/read/27876792/mtorc1-is-required-for-brown-adipose-tissue-recruitment-and-metabolic-adaptation-to-cold
#2
Sébastien M Labbé, Mathilde Mouchiroud, Alexandre Caron, Blandine Secco, Elizaveta Freinkman, Guillaume Lamoureux, Yves Gélinas, Roger Lecomte, Yohan Bossé, Patricia Chimin, William T Festuccia, Denis Richard, Mathieu Laplante
In response to cold, brown adipose tissue (BAT) increases its metabolic rate and expands its mass to produce heat required for survival, a process known as BAT recruitment. The mechanistic target of rapamycin complex 1 (mTORC1) controls metabolism, cell growth and proliferation, but its role in regulating BAT recruitment in response to chronic cold stimulation is unknown. Here, we show that cold activates mTORC1 in BAT, an effect that depends on the sympathetic nervous system. Adipocyte-specific mTORC1 loss in mice completely blocks cold-induced BAT expansion and severely impairs mitochondrial biogenesis...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27866303/anesthetic-technique-and-cancer-recurrence-in-oncologic-surgery-unraveling-the-puzzle
#3
Ryungsa Kim
Surgery/anesthetic technique-stimulated immunosuppression in the perioperative period might cause an increase in cancer-related mortality. Whether anesthetic technique can affect the outcomes of cancer patients remains inconclusive. This review discusses data from the available literature on anesthetic techniques applied in oncologic surgery, the long-term outcomes of anesthetic technique, and their relation to survival and cancer recurrence. Searches of the PubMed database up to June 30, 2016, were conducted to identify publications with the terms "anesthetic technique and cancer recurrence," "regional anesthesia and cancer recurrence," "local anesthesia and cancer recurrence," "anesthetic technique and immunosuppression," and "anesthetic technique and oncologic surgery...
November 19, 2016: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/27856318/sympathetic-nerve-repulsion-inhibited-by-designer-molecules-in-vitro-and-role-in-experimental-arthritis
#4
Julia Kunath, Nicolas Delaroque, Michael Szardenings, Ines Neundorf, Rainer H Straub
AIMS: In rheumatoid arthritis and collagen type II arthritis (CIA), sympathetic nerve fibers get lost in inflamed tissue. The process is probably induced by nerve repellent factors like semaphorin 3F (SEMA3F). Repulsion of sympathetic nerve fibers in inflamed tissue has proinflammatory effects due to the loss of anti-inflammatory neurotransmitters. We hypothesized that design molecules like antibodies and specific peptides that inhibit nerve fiber repulsion can ameliorate CIA. MATERIALS AND METHODS: Two blocking antibodies were used and four blocking peptides were generated using the phage display technique with the targets of SEMA3F and plexin-A2...
November 14, 2016: Life Sciences
https://www.readbyqxmd.com/read/27823934/beta-adrenergic-signaling-affect-osteoclastogenesis-via-osteocytic-mlo-y4-cells-rankl-production
#5
Qianqian Yao, Hengxing Liang, Bo Huang, Lin Xiang, Tianlu Wang, Yi Xiong, Bo Yang, Yanjun Guo, Ping Gong
The sympathetic nervous system play a pivotal role in bone remodeling through β-adrenoceptor (β-AR). However, it is not well documented whether the β-adrenoceptor pathway has the potential to influence osteocytes. In this study, cell viability, the expression of β-AR subtypes, enzymes of catecholamine synthesis or degradation, bone-related gene and protein in osteocytic MLO-Y4 cells were investigated by β-adrenergic stimulation. Isoproterenol (ISO) promoted RANKL to OPG expression in osteocytes, as well as osteoclasts formation in osteocytes-RAW264...
November 4, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27802416/src-kinases-regulate-glutamatergic-input-to-hypothalamic-presympathetic-neurons-and-sympathetic-outflow-in-hypertension
#6
Xin Qiao, Jing-Jing Zhou, De-Pei Li, Hui-Lin Pan
The elevated sympathetic outflow associated with hypertension is maintained by increased N-methyl-d-aspartate receptor (NMDAR) activity in the paraventricular nucleus (PVN) of the hypothalamus. Synaptic NMDAR activity is tightly regulated by protein kinases, including the Src family of tyrosine kinases. We determined whether Src kinases play a role in increased NMDAR activity of PVN neurons projecting to the rostral ventrolateral medulla and in elevated sympathetic vasomotor tone in spontaneously hypertensive rats (SHRs)...
January 2017: Hypertension
https://www.readbyqxmd.com/read/27797908/hematopoietic-stem-cell-mobilization-is-necessary-but-not-sufficient-for-tolerance-in-islet-transplantation
#7
Blair T Stocks, Analise B Thomas, Sydney K Elizer, Yuantee Zhu, Andrew F Marshall, Christopher S Wilson, Daniel J Moore
Overcoming the immune response to establish durable immune tolerance in Type 1 Diabetes remains a substantial challenge. The ongoing effector immune response involves numerous immune cell types but is ultimately orchestrated and sustained by the hematopoietic stem cell (HSC) niche. We therefore hypothesized that tolerance induction also requires these pluripotent precursors. Herein, we determined that the tolerance inducing agent anti-CD45RB induces HSC mobilization in non-autoimmune B6 mice but not in diabetes-prone NOD mice...
October 26, 2016: Diabetes
https://www.readbyqxmd.com/read/27796054/orexin-a-increases-the-firing-activity-of-hippocampal-ca1-neurons-through-orexin-1-receptors
#8
Xin-Yi Chen, Lei Chen, Yi-Feng Du
Orexins including two peptides, orexin-A and orexin-B, are produced in the posterior lateral hypothalamus. Much evidence has indicated that central orexinergic systems play numerous functions including energy metabolism, feeding behavior, sleep/wakefulness, and neuroendocrine and sympathetic activation. Morphological studies have shown that the hippocampal CA1 regions receive orexinergic innervation originating from the hypothalamus. Positive orexin-1 (OX1 ) receptors are detected in the CA1 regions. Previous behavioral studies have shown that microinjection of OX1 receptor antagonist into the hippocampus impairs acquisition and consolidation of spatial memory...
October 31, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27790765/acupuncture-does-not-restore-metabolic-disturbances-in-the-p450-aromatase-inhibitor-induced-polycystic-ovary-syndrome-rat-model
#9
Manuel Maliqueo, Anna Benrick, Rodrigo Rodrigues Marcondes, Julia Johansson, Miao Sun, Elisabet Stener-Victorin
Low-frequency electroacupuncture restores sex steroid synthesis and sympathetic activity in women with polycystic ovary syndrome, which may improve its metabolic disturbances likely by modulating sympathetic nerve activity or sex steroid synthesis. We investigated whether low-frequency electroacupuncture regulates the metabolic function to the same extent as treatment with estradiol or β-adrenergic blocking in a rat model of polycystic ovary syndrome induced by a P450 aromatase inhibitor (letrozole). Letrozole (200 μg per day) or placebo pellets were implanted in pre-pubertal Wistar rats...
October 28, 2016: Experimental Physiology
https://www.readbyqxmd.com/read/27778056/-unilateral-spinal-anesthesia-literature-review-and-recommendations
#10
B Büttner, A Mansur, M Bauer, J Hinz, I Bergmann
Unilateral spinal anesthesia is a cost-effective and rapidly performed anesthetic technique. An exclusively unilateral block only affects the sensory, motor and sympathetic functions on one side of the body and offers the advantages of a spinal block without the typical adverse side effects seen with a bilateral block. The lack of hypotension, in particular, makes unilateral spinal anesthesia suitable for patients with cardiovascular risk factors e. g. aortic valve stenosis or coronary artery disease. Increasing numbers of surgical procedures are now being performed on an outpatient basis...
October 24, 2016: Der Anaesthesist
https://www.readbyqxmd.com/read/27755119/sympathetic-nerves-and-hypertension-in-stress-sleep-apnea-and-caregiving
#11
Michael G Ziegler, Milos Milic
PURPOSE OF REVIEW: The sympathetic nervous system (SNS) mediates short-term increases in blood pressure. Evidence that psychosocial stress leads to chronic hypertension is mixed. The SNS activation found in obstructive sleep apnea (OSA), caregiving for a severely demented spouse, and obesity more specifically address whether SNS activation might lead to the metabolic syndrome and hypertension. RECENT FINDINGS: Obesity is associated with both increased SNS electrical activity and plasma norepinephrine...
January 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27754129/os-25-04-the-changes-of-arterial-stiffness-monitored-with-cardio-ankle-vascular-index-cavi-during-raised-intracranial-pressure-in-the-rabbit
#12
Chikao Miyazaki, Mao Takahashi, Kazuhiro Shimizu, Tatsuo Chiba, Takenori Morisita, Tomoyuki Yamamoto, Nobuo Sugo, Akira Takahara, Kohji Shirai
OBJECTIVE: Cardio ankle vascular index (CAVI) is reflecting stiffness of the arterial tree from the origin of aorta to the ankles. We observed elevated CAVI in patients who suffered from apoplexy attack. To clarify the role and the mechanism by which arterial stiffness elevated just after apoplexy attack, the effect of enhanced intracranial pressure (ICP) by injecting saline into the cisterna magna of the rabbit on blood pressure, CAVI and cervical blood flow, were studied. Furthermore the role of sympathetic nerve was studied...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27754015/br-04-1management-of-treatment-resistant-hypertension
#13
David John Webb
Treatment-resistant hypertension (TRH) is defined as the failure to achieve an office BP target of <140/90 mmHg (<130/80 mmHg in patients with chronic kidney disease (CKD) or diabetes) in patients with hypertension (HT), despite adherence to at least 3 antihypertensive medications at optimal tolerated doses, ideally including a diuretic (Calhoun et al., Circulation 2008). TRH identifies patients with hard-to-treat HT, who might benefit from specialist investigation and treatment. Although some studies put the prevalence of TRH as >10%, these levels may be inflated by white-coat hypertension and poor adherence...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27753872/ish-aha-1-a-case-of-refractory-hypertension-controlled-by-repeated-renal-denervation-and-celiac-plexus-block-a-case-of-refractory-sympathetic-overload
#14
Chan Joo Lee, Yeongmin Woo, Byeong-Keuk Kim, Kyung Bong Yoon, Hae-Young Lee, Sungha Park
A 30-year-old woman was referred to our hospital due to high blood pressure, dizziness, headache and blurred vision. She had past history of preeclampsia and gestational hypertension 4 years ago but she had not taken antihypertensive medication in spite of remained hypertension after delivery. She was hospitalized for fever due to urinary tract infection and severe hypertension which was above 210/140 mmHg. Despite maximal medical treatment with telmisartan 80 mg, nifedipine 120 mg, carvedilol 50 mg, doxazocin 8 mg, chlorthalidone 50 mg, spironolactone 50 mg#2, isosorbide dinitrate 80 mg and intermittent intravenous administration of nicardipine and labetalol, her systolic blood pressure remained above 160 mmHg and repeatedly measured above 200 mmHg...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27752321/the-use-of-%C3%AE-or-%C3%AE-blockers-to-ameliorate-the-chronic-stress-of-captivity-in-the-house-sparrow-passer-domesticus
#15
Clare Parker Fischer, L Michael Romero
When wild animals are brought into captivity for the first time, they frequently develop chronic stress symptoms. Animals can develop glucocorticoid dysregulation or changes in the sympathetic nervous system over the course of the first week in captivity. By blocking the action of epinephrine and norepinephrine using α- or β-blockers, we hoped to reduce the degree of chronic stress symptoms exhibited by newly captured house sparrows. We measured corticosterone, heart rate and heart rate variability in 24 house sparrows (Passer domesticus) over the first week of captivity...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27751762/short-term-angiotensin-subtype-1-receptor-blockade-does-not-alter-the-circulatory-responses-to-sympathetic-nervous-system-modulation-in-healthy-volunteers-before-and-during-sevoflurane-anesthesia-results-of-a-pilot-study
#16
Shahbaz R Arain, Julie K Freed, Jutta Novalija, Paul S Pagel, Thomas J Ebert
OBJECTIVE: The mechanism of perioperative hypotension in patients taking an angiotensin-receptor blocker up to the time of surgery remains unclear. This study tested the hypothesis that short-term angiotensin-receptor blocker treatment attenuated the sympathetic and vascular responses to autonomic stimuli in volunteers undergoing anesthesia. DESIGN: Randomized, crossover, blinded, pilot design. SETTING: Zablocki Veterans Affairs Medical Center, Milwaukee, WI...
December 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27699862/lumbar-sympathetic-pulsed-radiofrequency-treatment-for-primary-erythromelalgia-a-case-report
#17
Jin Young Lee, Woo Seog Sim, Ryung A Kang, Eun Kyung Lee, Jae Young Yang, Dae Yoon Kim
Erythromelalgia is often refractory and resistant to many forms of treatment. Numerous therapeutic options have been tried, but effective treatment remains elusive. The sympathetic nervous system has been involved in various painful conditions of neuropathic, vascular, and visceral origin. Sympathetic block is helpful in making a diagnosis and managing pain. We report a case of excellent pain relief after lumbar sympathetic pulsed radiofrequency treatment in a patient with primary erythromelalgia of the lower extremities...
October 4, 2016: Pediatric Dermatology
https://www.readbyqxmd.com/read/27684866/transsacrococcygeal-approach-to-ganglion-impar-block-for-treatment-of-chronic-coccygodynia-after-spinal-arachnoid-cyst-removal-a-case-report
#18
Young Deog Cha, Chun Woo Yang, Jung Uk Han, Jang Ho Song, WonJu Na, Sora Oh, Byung-Gun Kim
BACKGROUND: Coccygodynia is a pain in the region of the coccyx that radiates to the sacral, perineal area. The cause of the pain is often unknown. Coccygodynia is diagnosed through the patient's past history, a physical examination, and dynamic radiographic study, but the injection of local anesthetics or a diagnostic nerve blockade are needed to distinguish between somatic, neuropathic, and combined pain. Ganglion impar is a single retroperitoneal structure made of both paravertebral sympathetic ganglions...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27651875/treatment-for-acute-stage-complex-regional-pain-syndrome-type-ii-with-polydeoxyribonucleotide-injection
#19
Kun Soo Jang, Hyeun Sung Kim
Complex regional pain syndrome (CRPS) type II is a syndrome that develops after nerve injury. Symptoms may be severe, and vary depending on the degree of sympathetic nerve involvement. As yet, there is no satisfactory treatment. We report the case of a female patient who had an L5 left transverse process fracture and an S2 body fracture, who developed symptoms of CRPS type II in her left lower leg that were aggravated during ambulation in spite of absolute bed rest for one month after the trauma. Several treatments, including bed rest, medication, and numerous nerve blocks were attempted, but the pain persisted...
September 2016: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/27643109/ish-aha-1-a-case-of-refractory-hypertension-controlled-by-repeated-renal-denervation-and-celiac-plexus-block-a-case-of-refractory-sympathetic-overload
#20
Chan Joo Lee, Yeongmin Woo, Byeong-Keuk Kim, Kyung Bong Yoon, Hae-Young Lee, Sungha Park
A 30-year-old woman was referred to our hospital due to high blood pressure, dizziness, headache and blurred vision. She had past history of preeclampsia and gestational hypertension 4 years ago but she had not taken antihypertensive medication in spite of remained hypertension after delivery. She was hospitalized for fever due to urinary tract infection and severe hypertension which was above 210/140 mmHg. Despite maximal medical treatment with telmisartan 80 mg, nifedipine 120 mg, carvedilol 50 mg, doxazocin 8 mg, chlorthalidone 50 mg, spironolactone 50 mg#2, isosorbide dinitrate 80 mg and intermittent intravenous administration of nicardipine and labetalol, her systolic blood pressure remained above 160 mmHg and repeatedly measured above 200 mmHg...
September 2016: Journal of Hypertension
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