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https://www.readbyqxmd.com/read/28726653/retrospective-study-of-evaluation-of-patients-with-st-elevation-myocardial-infarction-and-intact-coronary-arteries-evaluation-of-treatment-approaches-outcome-and-prognosis
#1
E Tsetskhladze, I Khintibidze
Myocardial infarction with normal coronary arteries is a well known pathology. It may or may not be associated with left ventricle wall motion abnormalities. Data was reviewed retrospectively for patients with ST elevation myocardial infarction who underwent cardiac catheterization. From the total number of patients evaluated 10.3% (17) patients had Myocardial Infarction with normal coronary arteries. Females were more likely to present with MINCA then males. Coronary flow was normal in 11 from 17 patients with MINCA...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28724929/risk-factors-for-prolonged-hypotension-in-patients-with-pheochromocytoma-undergoing-laparoscopic-adrenalectomy-a-single-center-retrospective-study
#2
Shubin Wu, Weiyun Chen, Le Shen, Li Xu, Afang Zhu, Yuguang Huang
Prolonged hypotension during pheochromocytoma resection is a significant complication. We sought to investigate the predictors of prolonged hypotension in patients with pheochromocytoma undergoing laparoscopic adrenalectomy (LA). Patients with pheochromocytoma who underwent LA between 2012 and 2015 were surveyed. Patients were considered to have prolonged hypotension if they had a mean arterial blood pressure <60 mmHg or required ≥30 consecutive minutes of catecholamine support intraoperatively. Among 123 patients, 54 (43...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724309/effects-of-long-term-device-guided-slow-breathing-on-sympathetic-nervous-activity-in-hypertensive-patients-a-randomized-open-label-clinical-trial
#3
Silvana de Barros, Giovanio Vieira da Silva, Josiane Lima de Gusmão, Tatiana Goveia de Araújo, Dinoélia Rosa de Souza, Crivaldo Gomes Cardoso, Bruna Oneda, Décio Mion
PURPOSE: Device-guided slow breathing (DGB) is indicated as nonpharmacological treatment for hypertension. The sympathetic nerve activity (SNA) reduction may be one of the mechanisms involved in blood pressure (BP) decrease. The aim of this study is to evaluate the long-term use of DGB in BP and SNA. SUBJECTS AND METHODS: Hypertensive patients were randomized to listen music (Control Group-CG) or DGB (aim to reduce respiratory rate to less than 10 breaths/minute during 15 minutes/day for 8 weeks)...
July 20, 2017: Blood Pressure
https://www.readbyqxmd.com/read/28716726/early-life-risperidone-enhances-locomotor-responses-to-amphetamine-during-adulthood
#4
Bobbie Lee Stubbeman, Clifford J Brown, Justin R Yates, Mark E Bardgett
Antipsychotic drug prescriptions for pediatric populations have increased over the past 20 years, particularly the use of atypical antipsychotic drugs such as risperidone. Most antipsychotic drugs target forebrain dopamine systems, and early-life antipsychotic drug exposure could conceivably reset forebrain neurotransmitter function in a permanent manner that persists into adulthood. This study determined whether chronic risperidone administration during development modified locomotor responses to the dopamine/norepinephrine agonist, D-amphetamine, in adult rats...
July 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28716505/%C3%AE-methyltyrosine-a-tyrosine-hydroxylase-inhibitor-decreases-stress-response-in-zebrafish-danio-rerio
#5
Renan Idalencio, Heloísa Helena de Alcantara Barcellos, Fabiana Kalichak, João Gabriel Santos da Rosa, Thiago Acosta Oliveira, Murilo Sander de Abreu, Michele Fagundes, Fernanda Dametto, Letícia Marcheto, Caio Maximino de Oliveira, Leonardo José Gil Barcellos
In this article, we show that the tyrosine hydroxylase inhibitor α-Methyl-L-tyrosine (AMPT) decreased the responsiveness of the zebrafish stress axis to an acute stressful challenge. These effects were specific for responses to stimulation, since unstimulated (basal) cortisol levels were not altered by AMPT. Moreover, AMPT decreased the stress response 15 min after stimulation, but not after that time period. To our knowledge, this is the first report about the effects of AMPT on the neuroendocrine axis of adult zebrafish in acute stress responses...
July 14, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28713981/neuroendocrine-factors-the-missing-link-in-non%C3%A2-melanoma-skin-cancer-review
#6
Mihai Lupu, Ana Caruntu, Constantin Caruntu, Laura Maria Lucia Papagheorghe, Mihaela Adriana Ilie, Vlad Voiculescu, Daniel Boda, Constantin Carolina, Cristiana Tanase, Maria Sifaki, Nikolaos Drakoulis, Charalampos Mamoulakis, George Tzanakakis, Monica Neagu, Demetrios A Spandidos, Boris N Izotov, Aristides M Tsatsakis
Non‑melanoma skin cancer (NMSC) is the most common form of cancer worldwide, comprising 95% of all cutaneous malignancies and approximately 40% of all cancers. In spite of intensive efforts aimed towards awareness campaigns and sun‑protective measures, epidemiological data indicate an increase in the incidence of NMSC. This category of skin cancers has many common environmental triggers. Arising primarily on sun‑exposed skin, it has been shown that ultraviolet radiation is, in the majority of cases, the main trigger involved in the pathogenesis of NMSC...
July 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28713088/-pathogenic-factors-of-regulatory-mechanisms-of-organism-adaptation-to-conditions-with-a-high-level-of-psychoemotional-load
#7
Oksana V Gorsha, Vasily I Gorsha
INTRODUCTION: The urgency of the issue is determined by the value of the stress impact of environmental conditions on workers of the operator personnel contingent, because the deterioration of their health and well-being is a factor in dangerous situations. However, the search for early diagnostic markers forming diseases, with a view to their prevention, is still a challenge. The aim was to establish the most important (among studied) pathogenetic factors of status of regulatory mechanisms of adaptation of individuals with a high level of psychoemotional load that is conditional upon profession...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28712425/telomere-length-is-inversely-correlated-with-urinary-stress-hormone-levels-in-healthy-controls-but-not-in-un-medicated-depressed-individuals-preliminary-findings
#8
Brittany Fair, Synthia H Mellon, Elissa S Epel, Jue Lin, Dóra Révész, Josine E Verhoeven, Brenda W Penninx, Victor I Reus, Rebecca Rosser, Christina M Hough, Laura Mahan, Heather M Burke, Elizabeth H Blackburn, Owen M Wolkowitz
OBJECTIVE: Leukocyte telomere length (LTL) is a biomarker of cellular aging affected by chronic stress. The relationship of LTL to the stress hormones, cortisol and catecholamines, is unclear, as are possible differences between healthy controls (HC) and individuals with Major Depressive Disorder (MDD). This small pilot study is the first to examine the relationship between cortisol, catecholamines and LTL specifically in un-medicated MDD in comparison with HC. METHODS: Participants included 16 un-medicated MDD subjects and 15 HC for assay of LTL, 12-hour overnight urinary free cortisol and catecholamine levels...
August 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28711699/lower-catecholamine-activity-is-associated-with-greater-levels-of-anger-in-adults
#9
Joseph A Schwartz, Jill Portnoy
Previous research has revealed a consistent association between heart rate at rest and during stress and behavioral problems, potentially implicating autonomic nervous system (ANS) functioning in the etiological development of antisocial behavior. A complementary line of research has focused on the potential independent and interactive role of the two subsystems that comprise the ANS, the parasympathetic nervous system (PNS) and the sympathetic nervous system (SNS), on behavioral problems. The current study aims to contribute to the existing literature by examining the influence of heart rate (HR) reactivity, high-frequency heart rate variability (HF-HRV) reactivity, and catecholamine activity on a comprehensive measure of anger in a large, nationally-representative sample of adults from the United States...
July 12, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28711167/perioperative-management-of-hypertensive-neuroblastoma-a-study-from-the-italian-group-of-pediatric-surgical-oncologists-gicop
#10
Luca Pio, Stefano Avanzini, Girolamo Mattioli, Giuseppe Martucciello, Angela Rita Sementa, Massimo Conte, Annarita Gigliotti, Claudio Granata, Ernesto Leva, Anna Maria Fagnani, Umberto Caccioppoli, Nino Tedesco, Jurgen Schleef, Elisa Tirtei, Fortunato Siracusa, Paolo D'Angelo, Pierluigi Lelli Chiesa, Lucia Miglionico, Bruno Noccioli, Elisa Severi, Claudio Carlini, Francesco Vaccarella, Francesco Camoglio, Simone Cesaro, Alessandra Narciso, Giovanna Riccipetitoni, Giovanni Cecchetto, Alessandro Inserra
BACKGROUND: Hypertension (HT) is rarely reported in patients affected by Neuroblastoma (NB), and management guidelines are lacking. Clinical features and perioperative medical treatment in such patients were reviewed to 1) ascertain whether a shared treatment strategy exists among centers and 2) if possible, propose some recommendations for the perioperative management of HT in NB patients. METHODS: A retrospective multicenter survey was conducted on patients affected by NB who presented HT symptoms...
July 3, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28710773/reciprocal-modulation-of-helper-th1-and-th17-cells-by-the-%C3%AE-2-adrenergic-receptor-agonist-drug-terbutaline
#11
Catalina M Carvajal Gonczi, Mahdieh Tabatabaei Shafiei, Ashley East, Erika Martire, Meagane H I Maurice-Ventouris, Peter J Darlington
Catecholamine hormones are powerful regulators of the immune system produced by the sympathetic nervous system. They regulate the adaptive immune system by altering T cell differentiation into T helper (Th) 1 and Th2 cell subsets, but the effect on Th17 cells is not known. Th17 cells, defined in part by chemokine receptor CCR6 and cytokine IL-17A, are crucial for mediating certain pathogen-specific responses, and are linked with several autoimmune diseases. We demonstrated that a proportion of human Th17 cells express β2-adrenergic receptor, a G protein coupled receptor that responds to catecholamines...
July 15, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28710234/takotsubo-cardiomyopathy-and-transient-global-amnesia-a-shared-aetiology
#12
Jithin Sajeev, Anoop Koshy, Kevin Rajakariar, Gary Gordon
Takotsubo cardiomyopathy (TTC) is associated with acute, reversible left ventricular (LV) dysfunction, while transient global amnesia (TGA) is a reversible disorder of the brain characterised by anterograde amnesia. We report an unusual case of TTC occurring concurrently in a patient with TGA, and propose that catecholamine surge induced cerebral venous congestion and cardiotoxicity is the shared aetiology that leads to the concurrent manifestation of these conditions. TTC and TGA are reversible disorders that can occur concurrently in a subset of patients due to a unifying aetiology, catecholamine excess, leading to pathophysiological changes within the brain and the myocardium...
July 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28709722/involvement-of-dopamine-beta-hydroxylase-in-the-neuroendocrine-immune-regulatory-network-of-white-shrimp-litopenaeus-vannamei
#13
Winton Cheng, Ya-Wen Ka, Chin-Chyuan Chang
In shrimp, the biosynthesis of catecholamines, including dopamine and norepinephrine, is required for physiological and immunological responses against stress. Dopamine beta-hydroxylase (DBH), a copper-containing monooxygenase enzyme that plays an important role in catecholamine synthesis of the neuroendocrine regulatory network, was identified in Litopenaeus vannamei. In the present study, the potential role of DBH in the immunocompetence of L. vannamei was further estimated by depleting DBH by pharmaceutical inhibition of disulfiram and a gene silencing technique of L...
July 11, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28707873/light-activation-of-calcein-inhibits-vesicle-release-of-catecholamines
#14
Brooke A Miller, Jason B Papke, Vytas P Bindokas, Amy B Harkins
Calcein, a fluorescent fluid phase marker, has been used to track and visualize cellular processes such as synaptic vesicle fusion. It is also the fluorophore for Live cells in the commonly used Live/Dead viability assay. In pilot studies designed to determine fusion pore open size and vesicle movement in secretory cells, imaging analysis revealed that calcein reduced the number of vesicles released from the cells when stimulated with nicotine. Using amperometry to detect individual vesicle release events, we show that when calcein is present in the media, the number of vesicles that fuse with the cellular membrane are reduced when cells are stimulated with either nicotine or high K+...
July 14, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28704094/takotsubo-like-cardiomyopathy-in-a-large-cohort-of-patients-with-pheochromocytoma-and-paraganglioma
#15
Nadia Gagnon, Samer Mansour, Yoel Bitton, Isabelle Bourdeau
Pheochromocytoma (PHEO) and paraganglioma (PGL) (PPGL) may cause acute Takotsubo-like catecholamine cardiomyopathy (TLC). OBJECTIVE: To determine the prevalence and clinical presentation of TLC in a large cohort of patients with PPGL. METHODS: We reviewed retrospectively the records of consecutive patients with PPGL investigated in our center from 1995 to 2016. We collected clinical and paraclinical data of patients that had TLC in this cohort. We performed a literature review of cases of TTC-related to PPGL described previously from 1990-2015...
July 13, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28701322/functional-and-neurochemical-characterization-of-angiotensin-type-1a-receptor-expressing-neurons-in-the-nucleus-of-the-solitary-tract-of-the-mouse
#16
David A Carter, Yan-Ting Choong, Angela A Connelly, Jaspreet K Bassi, Nicole O Hunter, Nattaya Thongsepee, Ida J Llewellyn-Smith, Angelina Y Fong, Stuart James McDougall, Andrew Mark Allen
Angiotensin II acts via two main receptors within the CNS, with the type 1A receptor (AT1AR) most widely expressed in adult neurons. Activation of the AT1R in the nucleus of the solitary tract (NTS), the principal nucleus receiving central synapses of viscerosensory afferents, modulates cardiovascular reflexes. Expression of the AT1R occurs in high density within the NTS of most mammals, including humans, but the fundamental electrophysiological and neurochemical characteristics of the AT1AR-expressing NTS neurons are not known...
July 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28700579/tfh-derived-dopamine-accelerates-productive-synapses-in-germinal-centres
#17
Ilenia Papa, David Saliba, Maurilio Ponzoni, Sonia Bustamante, Pablo F Canete, Paula Gonzalez-Figueroa, Hayley A McNamara, Salvatore Valvo, Michele Grimbaldeston, Rebecca A Sweet, Harpreet Vohra, Ian A Cockburn, Michael Meyer-Hermann, Michael L Dustin, Claudio Doglioni, Carola G Vinuesa
Protective high-affinity antibody responses depend on competitive selection of B cells carrying somatically mutated B-cell receptors by follicular helper T (TFH) cells in germinal centres. The rapid T-B-cell interactions that occur during this process are reminiscent of neural synaptic transmission pathways. Here we show that a proportion of human TFH cells contain dense-core granules marked by chromogranin B, which are normally found in neuronal presynaptic terminals storing catecholamines such as dopamine...
July 12, 2017: Nature
https://www.readbyqxmd.com/read/28697413/using-size-exclusion-chromatography-to-monitor-the-synthesis-of-melanins-from-catecholamines
#18
Koen P Vercruysse, Astiney M Clark, Paola A F Bello, Majidah Alhumaidi
We have employed size exclusion chromatography (SEC) to the study of the auto- and Cu(2+)-mediated oxidation of the catecholamines, dopamine, epinephrine and norepinephrine, into melanins. We observed that, due to non-size exclusion-mediated effects, the catecholamines and some of the low molecular mass intermediates generated during the oxidation reactions, could be resolved from each other and from the high molecular mass pigment generated. Thus, SEC allowed us to monitor the disappearance of the catecholamine starting compounds, the appearance and subsequent disappearance of the low molecular mass chromophores generated in the initial phase of the reactions and the appearance of the high molecular mass melanins...
July 3, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28693594/the-impact-of-phosphate-balanced-crystalloid-infusion-on-acid-base-homeostasis-palance-study-study-protocol-for-a-randomized-controlled-trial
#19
Judith-Irina Pagel, Nikolai Hulde, Tobias Kammerer, Michaela Schwarz, Daniel Chappell, Alexander Burges, Klaus Hofmann-Kiefer, Markus Rehm
BACKGROUND: This study aims to investigate the effects of a modified, balanced crystalloid including phosphate in a perioperative setting in order to maintain a stable electrolyte and acid-base homeostasis in the patient. METHODS/DESIGN: This is a single-centre, open-label, randomized controlled trial involving two parallel groups of female patients comparing a perioperative infusion regime with sodium glycerophosphate and Jonosteril® (treatment group) or Jonosteril® (comparator) alone...
July 10, 2017: Trials
https://www.readbyqxmd.com/read/28688648/nationwide-review-of-hormonally-active-adrenal-tumors-highlights-high-morbidity-in-pheochromocytoma
#20
Punam P Parikh, Gustavo A Rubio, Josefina C Farra, John I Lew
BACKGROUND: Adrenal adenomas are benign tumors often discovered incidentally, and >70% are hormonally inactive. The remaining subset may produce excess aldosterone, cortisol, or catecholamine. Perioperative outcomes after adrenalectomy for such "hormonally active" tumors remain unclear. This study examines in-hospital outcomes after unilateral adrenalectomy for hormonally active tumors. METHODS: A retrospective review was performed using the Nationwide Inpatient Sample (2006-2011) to identify patients undergoing unilateral adrenalectomy for hormonally active or inactive tumors...
July 2017: Journal of Surgical Research
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