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https://www.readbyqxmd.com/read/27905115/treatment-for-hereditary-angioedema-with-normal-c1-inh-and-specific-mutations-in-the-f12-gene-hae-fxii
#1
K Bork, K Wulff, G Witzke, J Hardt
Hereditary angioedema with normal C1 esterase inhibitor and mutations in the F12 gene (HAE-FXII) is associated with skin swellings, abdominal pain attacks, and the risk of asphyxiation due to upper airway obstruction. It occurs nearly exclusively in women. We report our experience treating HAE-FXII with discontinuation of potential trigger factors and drug therapies. The study included 72 patients with HAE-FXII. Potential triggers included estrogen-containing oral contraceptives (eOC), hormonal replacement therapy, or angiotensin-converting enzyme inhibitors...
November 6, 2016: Allergy
https://www.readbyqxmd.com/read/27881412/renin-angiotensin-aldosterone-system-inhibitors-improve-membrane-stability-and-change-gene-expression-profiles-in-dystrophic-skeletal-muscles
#2
Jessica A Chadwick, Sayak Bhattacharya, Jeovanna Lowe, Noah Weisleder, Jill A Rafael-Fortney
Angiotensin-converting enzyme inhibitors and mineralocorticoid receptor (MR) antagonists are FDA approved drugs that inhibit the renin-angiotensin-aldosterone system (RAAS) and are used to treat heart failure. Combined treatment with the angiotensin-converting enzyme inhibitor lisinopril and the non-specific MR antagonist spironolactone surprisingly improves skeletal muscle, in addition to heart function and pathology in a Duchenne muscular dystrophy mouse model. We recently demonstrated that MR is present in all limb and respiratory muscles and functions as a steroid hormone receptor in differentiated normal human skeletal muscle fibers...
November 23, 2016: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/27872236/preclinical-and-early-clinical-profile-of-a-highly-selective-and-potent-oral-inhibitor-of-aldosterone-synthase-cyp11b2
#3
Katrijn Bogman, Dietmar Schwab, Marie-Laure Delporte, Giuseppe Palermo, Kurt Amrein, Susanne Mohr, Maria Cristina De Vera Mudry, Morris J Brown, Philippe Ferber
Primary hyperaldosteronism is a common cause of resistant hypertension. Aldosterone is produced in the adrenal by aldosterone synthase (AS, encoded by the gene CYP11B2). AS shares 93% homology to 11β-hydroxylase (encoded by the gene CYP11B1), responsible for cortisol production. This homology has hitherto impeded the development of a drug, which selectively suppresses aldosterone but not cortisol production, as a new treatment for primary hyperaldosteronism. We now report the development of RO6836191 as a potent (Ki 13 nmol/L) competitive inhibitor of AS, with in vitro selectivity >100-fold over 11β-hydroxylase...
November 21, 2016: Hypertension
https://www.readbyqxmd.com/read/27865700/adhesion-ability-of-angiotensin-ii-with-model-membranes
#4
Julia Preu, Louis Tiefenauer, Thomas Gutberlet
The octa-peptide angiotensin II (Ang II, (H2NAspArgValTyrIleHisProPheCOOH)) is one of the key player on blood pressure regulation in mammals. Predominantly binding to the Angiotensin type 1 and 2 receptors, the hormone is one of several peptide ligands binding to G protein coupled receptors (GPCR). The active hormone derives from a high molecular weight precursor sequentially cleaved by the proteases renin and the angiotensin converting enzyme (ACE). The chemical nature of the amino acid sequence has an impact on the behavior in the proximity of membranes, demonstrated using different membrane model systems and biophysical methods...
November 17, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27846041/factors-affecting-the-sensitivity-of-tc-99m-methoxyisobutylisonitrile-dual-phase-parathyroid-single-photon-emission-computed-tomography-in-primary-hyperparathyroidism
#5
Mine Araz, Derya Çayir, Mehmet Erdoğan, Bekir Uçan, Erman Çakal
OBJECTIVE: The aim of this study was to investigate the effects of thyroid diseases and regularly used medications on the sensitivity of Tc-99m methoxyisobutylisonitrile (MIBI) dual-phase parathyroid single photon emission computed tomography (SPECT) and to define indicatives of the result of the study. PATIENTS AND METHODS: Overall, 218 primary hyperparathyroidism patients (190 women, 28 men, mean age: 57±14 years) with thyroid-parathyroid ultrasonography and Tc-99m MIBI dual-phase parathyroid SPECT were retrospectively enrolled...
November 11, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27837351/biomanufacturing-history-and-perspective
#6
REVIEW
Yi-Heng Percival Zhang, Jibin Sun, Yanhe Ma
Biomanufacturing is a type of manufacturing that utilizes biological systems (e.g., living microorganisms, resting cells, animal cells, plant cells, tissues, enzymes, or in vitro synthetic (enzymatic) systems) to produce commercially important biomolecules for use in the agricultural, food, material, energy, and pharmaceutical industries. History of biomanufacturing could be classified into the three revolutions in terms of respective product types (mainly), production platforms, and research technologies...
November 11, 2016: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27834291/sex-differences-in-the-metabolic-dysfunction-and-insulin-resistance-of-skeletal-muscle-glucose-transport-following-high-fructose-ingestion
#7
Yupaporn Rattanavichit, Natsasi Chukijrungroat, Vitoon Saengsirisuwan
The role of high fructose ingestion (HFI) in the development of conditions mimicking human metabolic syndrome has mostly been demonstrated in male animals; however, the extent of HFI-induced metabolic alterations in females remains unclear. The present study investigated whether HFI-induced metabolic perturbations differ between sexes and whether HFI aggravates the metabolic disturbances under ovarian hormone deprivation. Male, female and ovariectomized (OVX) Sprague-Dawley rats were given either water or liquid fructose (10% w/v) for 6 weeks...
November 9, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27822449/similar-efficacy-from-specific-and-non-specific-mineralocorticoid-receptor-antagonist-treatment-of-muscular-dystrophy-mice
#8
Jeovanna Lowe, Kyle T Floyd, Neha Rastogi, Eric J Schultz, Jessica A Chadwick, Sarah A Swager, Jonathan G Zins, Feni K Kadakia, Suzanne Smart, Elise P Gomez-Sanchez, Celso E Gomez-Sanchez, Subha V Raman, Paul M L Janssen, Jill A Rafael-Fortney
BACKGROUND: Combined treatment with an angiotensin-converting enzyme inhibitor and a mineralocorticoid receptor (MR) antagonist improved cardiac and skeletal muscle function and pathology in a mouse model of Duchenne muscular dystrophy. MR is present in limb and respiratory skeletal muscles and functions as a steroid hormone receptor. OBJECTIVE: The goals of the current study were to compare the efficacy of the specific MR antagonist eplerenone with the non-specific MR antagonist spironolactone, both in combination with the angiotensin-converting enzyme inhibitor lisinopril...
2016: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/27776734/preadolescent-adversity-programs-a-disrupted-maternal-stress-reactivity%C3%A2-in-humans-and-mice
#9
Kathleen E Morrison, C Neill Epperson, Mary D Sammel, Grace Ewing, Jessica S Podcasy, Liisa Hantsoo, Deborah R Kim, Tracy L Bale
BACKGROUND: Adverse childhood experiences (ACEs) are one of the greatest predictors of affective disorders for women. Periods of dynamic hormonal flux, including pregnancy, exacerbate the risk for affective disturbance and promote hypothalamic-pituitary-adrenal (HPA) axis dysregulation, a key feature of affective disorders. Little is understood as to how stress experienced in late childhood, defined as preadolescence, alters the programming unique to this period of brain maturation and its interaction with the hormonal changes of pregnancy and postpartum...
August 26, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27766748/chronic-heart-failure-as-a-state-of-reduced-effectiveness-of-the-natriuretic-peptide-system-implications-for-therapy
#10
Javier Díez
Natriuretic peptides (NPs) promote diuresis, natriuresis and vasodilation in early chronic heart failure (CHF), countering renin-angiotensin-aldosterone system (RAAS) and sympathetic nervous system (SNS) overstimulation. Despite dramatic increases in circulating NP concentrations as CHF progresses, their effects become blunted. Increases in diuresis, natriuresis, and vasodilation after administration of exogenous atrial (ANP) or brain (BNP) natriuretic peptides are attenuated in patients with advanced CHF compared with controls...
October 21, 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27763560/renal-protective-effects-of-17%C3%AE-estradiol-on-mice-with-acute-aristolochic-acid-nephropathy
#11
Min Shi, Liang Ma, Li Zhou, Ping Fu
Aristolochic acid nephropathy (AAN) is a progressive kidney disease caused by a Chinese herb containing aristolochic acid. Excessive death of renal tubular epithelial cells (RTECs) characterized the acute phase of AAN. Therapies for acute AAN were limited, such as steroids and angiotensin-receptor blockers (ARBs)/angiotensin-converting enzyme inhibitors (ACEIs). It was interesting that, in acute AAN, female patients showed relative slower progression to renal failure than males. In a previous study, female hormone 17β-estradiol (E2) was found to attenuate renal ischemia-reperfusion injury...
October 18, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27754186/sp-04-1-the-role-of-natriuretic-peptides-in-the-pathogenesis-of-cardiovascular-diseases
#12
Zhanna Kobalava
The burden of cardiovascular diseases (CVD) in general and heart failure (HF) in particular continues to increase worldwide. CVD are major contributors to death and morbidity and recognized as important drivers of healthcare expenditure. Chronic overactivity of the renin-angiotensin-aldosterone system (RAAS) plays a key role in human hypertension and HF pathophysiology. RAAS is fundamental in the overall regulation of cardiovascular homeostasis through the actions of hormones, which regulate vascular tone, and specifically blood pressure through vasoconstriction and renal sodium and water retention...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27730378/diagnostic-value-of-blood-tests-for-occult-causes-of-initially-idiopathic-small-fiber-polyneuropathy
#13
Magdalena Lang, Roi Treister, Anne Louise Oaklander
Small-fiber polyneuropathy (SFPN) causes non-specific symptoms including chronic pain, cardiovascular, gastrointestinal, and sweating complaints. Diagnosis is made from history and exam in patients with known risk factors such as diabetes, but objective test confirmation is recommended for patients without known risks. If tests confirm SFPN, and it is "initially idiopathic" (iiSFPN), screening for occult causes is indicated. This study's aim was to evaluate the 21 widely available, recommended blood tests to identify the most cost-effective ones and to learn about occult causes of iiSFPN...
December 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27668644/the-renin-angiotensin-aldosterone-system-raas-physiology-and-molecular-mechanisms-of-functioning
#14
Monika Chaszczewska-Markowska, Maria Sagan, Katarzyna Bogunia-Kubik
Secretion of renin juxtaglomerular cells into bloodstream initiates activation of an enzymatic-hormonal cascade known as the RAAS (renin - angiotensin - aldosterone system). As a result, blood pressure is increased by the means several interrelated mechanisms. Mechanism of Zjednoczoaction of this system has been known for decades, but a few previously unknown components were recently added, such as ACE-2 and Ang(1-7), and their role often seems to be opposite to that of the conventional components. Local tissue systems also have important biological functions...
September 13, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/27649628/neprilysin-is-a-mediator-of-alternative-renin-angiotensin-system-activation-in-the-murine-and-human-kidney
#15
Oliver Domenig, Arndt Manzel, Nadja Grobe, Eva Königshausen, Christopher C Kaltenecker, Johannes J Kovarik, Johannes Stegbauer, Susan B Gurley, Dunja van Oyen, Marlies Antlanger, Michael Bader, Daisy Motta-Santos, Robson A Santos, Khalid M Elased, Marcus D Säemann, Ralf A Linker, Marko Poglitsch
Cardiovascular and renal pathologies are frequently associated with an activated renin-angiotensin-system (RAS) and increased levels of its main effector and vasoconstrictor hormone angiotensin II (Ang II). Angiotensin-converting-enzyme-2 (ACE2) has been described as a crucial enzymatic player in shifting the RAS towards its so-called alternative vasodilative and reno-protective axis by enzymatically converting Ang II to angiotensin-(1-7) (Ang-(1-7)). Yet, the relative contribution of ACE2 to Ang-(1-7) formation in vivo has not been elucidated...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27643143/sp-04-1-the-role-of-natriuretic-peptides-in-the-pathogenesis-of-cardiovascular-diseases
#16
Zhanna Kobalava
The burden of cardiovascular diseases (CVD) in general and heart failure (HF) in particular continues to increase worldwide. CVD are major contributors to death and morbidity and recognized as important drivers of healthcare expenditure. Chronic overactivity of the renin-angiotensin-aldosterone system (RAAS) plays a key role in human hypertension and HF pathophysiology. RAAS is fundamental in the overall regulation of cardiovascular homeostasis through the actions of hormones, which regulate vascular tone, and specifically blood pressure through vasoconstriction and renal sodium and water retention...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27637026/role-of-chymase-in-the-development-of-liver-cirrhosis-and-its-complications-experimental-and-human-data
#17
Giovanni Sansoè, Manuela Aragno, Raffaella Mastrocola, Giulio Mengozzi, Erica Novo, Maurizio Parola
BACKGROUND: Tissue Angiotensin II (Ang-II), produced through local non ACE-dependent pathways, stimulates liver fibrogenesis, renal vasoconstriction and sodium retention. AIM: To highlight chymase-dependent pathway of Ang-II production in liver and kidney during cirrhosis development. METHODS: Liver histology, portal pressure, liver and kidney function, and hormonal status were investigated in rat liver cirrhosis induced through 13 weeks of CCl4, with or without chymase inhibitor SF2809E, administered between 4th and 13th CCl4 weeks; liver and kidney chymase immunolocation and Ang-II content were assessed...
2016: PloS One
https://www.readbyqxmd.com/read/27631565/perceived-parental-care-during-childhood-acth-cortisol-and-nicotine-dependence-in-the-adult
#18
Gilberto Gerra, Matteo Manfredini, Lorenzo Somaini, Giulia Milano, Roberto Ciccocioppo, Claudia Donnini
Studies evidenced the relationship between adverse childhood experiences (ACEs) and tobacco smoking in adulthood. An appropriate parenting style has been found to be associated with children's less frequent tobacco consumption. Hypothalamus-pituitary-adrenal (HPA) axis hyperactivity could represent the potential link between ACEs, mood disorders and smoking susceptibility. We studied a sample of 50 male smokers, affected by nicotine dependence and 50 controls who never smoked. Self-reported retrospective perception of neglect (Child Experience of Care and Abuse: CECA-Q questionnaire), age of smoking onset, number of cigarette/day, psychiatric symptoms (Symptoms Check List 90 scale: SCL 90) and basal level of ACTH and cortisol have been evaluated...
November 30, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27605943/sarcopenia-in-heart-failure-mechanisms-and-therapeutic-strategies
#19
REVIEW
Agnese Collamati, Emanuele Marzetti, Riccardo Calvani, Matteo Tosato, Emanuela D'Angelo, Alex N Sisto, Francesco Landi
Chronic heart failure (CHF) is a highly prevalent condition among the elderly and is associated with considerable morbidity, institutionalization and mortality. In its advanced stages, CHF is often accompanied by the loss of muscle mass and strength. Sarcopenia is a geriatric syndrome that has been actively studied in recent years due to its association with a wide range of adverse health outcomes. The goal of this review is to discuss the relationship between CHF and sarcopenia, with a focus on shared pathophysiological pathways and treatments...
July 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27580998/effects-of-angiotensin-converting-enzyme-inhibitors-and-angiotensin-receptor-blockers-on-prothrombotic-processes-and-myocardial-infarction-risk
#20
REVIEW
Csaba András Dézsi, Veronika Szentes
Acute ischemic events occur most frequently at dawn and in the early hours of the morning. The development of these severe clinical events exhibits a temporal relationship with changes in various hemodynamic, prothrombotic, and hormonal processes. The authors highlight not only these relationships but also the potential protective effect of increased bradykinin levels and the inhibition of different angiotensin II (AT-II) receptors (AT2, AT4) against unfavorable prothrombotic influences, which-based on studies to date-decreases the risk of acute cardiovascular events...
December 2016: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
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