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https://www.readbyqxmd.com/read/28734244/renal-denervation-attenuates-hypertension-and-renal-dysfunction-in-a-model-of-cardiovascular-and-renal-disease-which-is-associated-with-reduced-nadph-and-xanthine-oxidase-activity
#1
Maria Peleli, Peter Flacker, Zhengbing Zhuge, Cristina Gomez, Craig E Wheelock, A Erik G Persson, Mattias Carlstrom
Oxidative stress is considered a central pathophysiological event in cardiovascular disease, including hypertension. Early age reduction in renal mass is associated with hypertension and oxidative stress in later life, which is aggravated by increased salt intake. The aim of the present study was to examine if renal sympathetic denervation can exert blood pressure lowering effects in uninephrectomized (UNX) rats (3-week old) fed with high salt (HS, 4%; w/w) diet for 4 weeks. Moreover, we investigated if renal denervation is associated with changes in NADPH and xanthine oxidase-derived reactive oxygen species...
July 5, 2017: Redox Biology
https://www.readbyqxmd.com/read/28734177/manual-morphometry-of-hippocampus-and-amygdala-in-adults-with-attention-deficit-hyperactivity-disorder
#2
Kathrin Nickel, Ludger Tebartz van Elst, Evgeniy Perlov, Renate Jitten-Schachenmeier, Daniel Beier, Dominique Endres, Peter Goll, Alexandra Philipsen, Simon Maier
Previous studies have pointed to the involvement of limbic structures in the genesis of attention deficit hyperactivity disorder (ADHD). The present researchers manually segmented magnetic resonance images of 30 individuals with ADHD and 30 individually matched controls, focusing on amygdala and hippocampus volumes. Neither hippocampus nor amygdala volume differed significantly between individuals with and without ADHD. However, ADHD patients with higher hyperactivity scores had significantly smaller left amygdala volumes...
July 14, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28732325/epidemiology-and-pathophysiology-of-pregnancy-associated-breast-cancer-a-review
#3
REVIEW
Rossana Ruiz, Carmen Herrero, Kathrin Strasser-Weippl, Diego Touya, Jessica St Louis, Alexandra Bukowski, Paul E Goss
The interactions between pregnancy and breast cancer (BC) are complex. Overall, parity is associated with long-term protective effects against BC, however in a small group of susceptible patients, pregnancy can lead to the development of a form of BC with a particularly poor prognosis. Pregnancy-associated breast cancer (PABC) remains an under-studied but important and growing clinical problem worldwide. Several aspects of PABC, including risk factors and mechanisms involved in its occurrence and aggressiveness, are incompletely understood...
July 18, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28732208/longitudinal-investigation-of-the-parietal-lobe-anatomy-in-bipolar-disorder-and-its-association-with-general-functioning
#4
Adele Ferro, Carolina Bonivento, Giuseppe Delvecchio, Marcella Bellani, Cinzia Perlini, Nicola Dusi, Veronica Marinelli, Mirella Ruggeri, A Carlo Altamura, Benedicto Crespo-Facorro, Paolo Brambilla
The parietal lobe (PL) supports cognitive domains, including attention and memory, which are impaired in bipolar disorder (BD). Although cross-sectional voxel-based morphometry studies found reduced PL grey matter (GM) in BD, none has longitudinally focused on PL anatomy in BD, relating it to patients' functioning. Thirty-eight right-handed BD patients and 42 matched healthy subjects (HS) underwent a Magnetic Resonance Imaging (MRI) scan at baseline. Seventeen BD patients and 16 matched HS underwent a follow-up MRI...
June 20, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28732152/secukinumab-in-the-treatment-of-psoriasis-and-psoriatic-arthritis-a-review-of-the-literature
#5
M Abrouk, J Gandy, M Nakamura, K Lee, M Brodsky, R Singh, H Zhu, B Farahnik, T Bhutani, J Koo
While there are several commercially available treatment options for psoriasis and psoriatic arthritis, there remains a large number of individuals who are refractory to current modalities. In the recent past, there has been increasing evidence that interleukin (IL)-17 plays a vital role in the pathophysiology of psoriasis. Preclinical, phase II, and phase III studies of secukinumab (Cosentyx®) targeting IL-17 and its receptor have thus far proved to be promising. We reviewed the results of phase II and phase III clinical trials for secukinumab in the treatment of psoriasis and psoriatic arthritis...
July 2017: Skin Therapy Letter
https://www.readbyqxmd.com/read/28732089/cx47-fine-tunes-the-handling-of-serum-lipids-but-is-dispensable-for-lymphatic-vascular-function
#6
Merlijn J Meens, Issa Kutkut, Viviane Rochemont, Juan Dubrot, Fouad R Kaladji, Amélie Sabine, Oliver Lyons, Stefanie Hendrikx, Jeremiah Bernier-Latmani, Friedemann Kiefer, Alberto Smith, Stéphanie Hugues, Tatiana V Petrova, Brenda R Kwak
Mutations in the gap junction protein connexin47 (Cx47) are associated with lymphedema. However, the role of Cx47 in lymphatic pathophysiology is unknown. We demonstrate that Cx47 is expressed in lymphatic endothelial cells by whole-mount immunostaining and qPCR. To determine if Cx47 plays a role in lymphatic vessel function we analysed Cx47-/- mice. Cx47-deficiency did not affect lymphatic contractility (contractile amplitude or frequency) or lymphatic morphology (vessel diameter or number of valves). Interstitial fluid drainage or dendritic cell migration through lymphatic vessels was also not affected by Cx47-deficiency...
2017: PloS One
https://www.readbyqxmd.com/read/28731984/the-association-of-cigarette-smoking-with-high-frequency-heart-rate-variability-an-ecological-momentary-assessment-study
#7
Fernando Bodin, Kathleen M McIntyre, Joseph E Schwartz, Paula S McKinley, Caitlyn Cardetti, Peter A Shapiro, Ethan Gorenstein, Richard P Sloan
OBJECTIVE: Evidence from both laboratory and observational studies suggests that acute and chronic smoking leads to reduced high frequency heart rate variability (HF-HRV), a measure of cardiac vagal regulation. We utilized ecological momentary assessment (EMA) to study the effect of smoking on concurrent HF-HRV in a trial measuring the effects of hostility reduction, and compared 24-hour HF-HRV in smokers and non-smokers. METHOD: Ambulatory ECG data were collected pre-randomization from 149 healthy, individuals with high hostility levels (20-45 years, BMI ≤ 32 kg/m) and paired with concurrent EMA ratings of smoking, and physical position during waking hours...
July 20, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28731926/history-of-anaesthesia-the-ketamine-story-past-present-and-future
#8
Georges Mion
: Ketamine's history begins in the 1950s in Detroit, Michigan, at Parke-Davis Laboratories. On 26 March 1956, Harold V. Maddox synthesised phencyclidine or PCP. Domino studied PCP effects in animals and in 1958, Greifenstein made the first trials of PCP in humans under the name of Sernyl. Sernyl did not cause depression of cardiovascular and respiratory functions, but elicited severe excitation with a very prolonged postoperative recovery. Because of its psychedelic effects, it became a street drug under the name of 'angel dust' and was placed on schedule II of Federal Controlled Substance Act (CSA) in 1978...
July 20, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28731917/the-impact-of-iron-overload-in-acute-leukemia-chronic-inflammation-but-not-the-presence-of-nontransferrin-bound-iron-is-a-determinant-of-oxidative-stress
#9
Lale Olcay, Mustafa Serteser, Murat Kolay, Havva F Balci, Ülkü M Yildirim, Sibel A Tekgündüz, Tuncay Hazirolan, Yunus K Terzi
In the literature, studies on the oxidant effects of nontransferrin bound iron [NTBI (eLPI assay)] during chemotherapy of acute lymphoblastic leukemia and acute myeloblastic leukemia are lacking. We established NTBI and oxidative stress determinants (OSD), iron parameters, high-sensitive C-reactive protein (hs-CRP) levels, liver tests, cumulative chemotherapeutic doses, and transfused blood in 36 children with acute leukemia throughout chemotherapy. These parameters were determined at the beginning and end of chemotherapy blocks (11 time points) and in 20 healthy children using enzyme-linked immunosorbent assay, and colorimetric and fluorometric enzymatic methods...
July 20, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28731449/cerebrospinal-fluid-neurogranin-as-a-biomarker-of-neurodegenerative-diseases-a-cross-sectional-study
#10
Simone Lista, Nicola Toschi, Filippo Baldacci, Henrik Zetterberg, Kaj Blennow, Ingo Kilimann, Stefan J Teipel, Enrica Cavedo, Antonio Melo Dos Santos, Stéphane Epelbaum, Foudil Lamari, Bruno Dubois, Robert Nisticò, Roberto Floris, Francesco Garaci, Harald Hampel
We investigated cerebrospinal fluid (CSF) concentrations of the postsynaptic biomarker neurogranin at baseline in cognitively healthy controls (HC) compared to individuals with mild cognitive impairment (MCI), patients with Alzheimer's disease (AD) dementia, and patients with frontotemporal dementia (FTD). CSF neurogranin was quantified using an in-house immunoassay in a cross-sectional multicenter study of 108 participants [AD dementia (n = 35), FTD (n = 9), MCI (n = 41), cognitively HC (n = 23)]...
July 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731444/the-relationship-of-brain-amyloid-load-and-apoe-status-to-regional-cortical-thinning-and-cognition-in-the-adni-cohort
#11
Chunfei Li, David A Loewenstein, Ranjan Duara, Mercedes Cabrerizo, Warren Barker, Malek Adjouadi
BACKGROUND: Both amyloid (Aβ) load and APOE4 allele are associated with neurodegenerative changes in Alzheimer's disease (AD) prone regions and with risk for cognitive impairment. OBJECTIVE: To evaluate the unique and independent contribution of APOE4 allele status (E4+∖E4-), Aβ status (Amy+∖Amy-), and combined APOE4 and Aβ status on regional cortical thickness (CoTh) and cognition among participants diagnosed as cognitively normal (CN, n = 251), early mild cognitive impairment (EMCI, n = 207), late mild cognitive impairment (LMCI, n = 196), and mild AD (n = 162) from the ADNI...
July 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731336/triple-reuptake-inhibitors-as-potential-therapeutics-for-depression-and-other-disorders-design-paradigm-and-developmental-challenges
#12
Murugaiah A M Subbaiah
Although first-line antidepressants offer therapeutic benefit, about 35% of depressed patients are not adequately treated, creating a large unmet medical need. These medicines mostly enhance the synaptic levels of serotonin and/or norepinephrine. Evidence from preclinical and clinical studies implicate dopamine hypofunction in the pathophysiology of depression. Triple reuptake inhibitors (TRIs), which elevate dopamine in addition to serotonin and norepinephrine, may demonstrate greater efficacy, with the reversal of anhedonia and improved tolerability...
July 21, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28731294/the-bioinorganic-chemistry-of-lead-in-the-context-of-its-toxicity
#13
Wolfgang Maret
Owing to its abundance on earth and its multiple uses by humans, lead (Pb) is a major toxicant that has threatened human health for millennia and continues to do so. There is no safe level of exposure, necessitating a nuanced approach to its control in the food we consume, the water we drink, and the air we breathe. Turnover in soft tissues is within days. In contrast, lead accumulates in bone and turns over with a half-life of about 30 years, though it can be mobilized from bone under physiological and pathophysiological conditions of bone resorption...
April 10, 2017: Metal Ions in Life Sciences
https://www.readbyqxmd.com/read/28731260/transcriptional-regulation-of-app-by-apoe-to-boldly-go-where-no-isoform-has-gone-before-apoe-app-transcription-and-ad-hypothesised-mechanisms-and-existing-knowledge-gaps
#14
REVIEW
Liying Corinne Lee, Michele Q L Goh, Edward H Koo
Alzheimer's disease (AD) is the most common form of dementia that gradually disrupts the brain network to impair memory, language and cognition. While the amyloid hypothesis remains the leading proposed mechanism to explain AD pathophysiology, anti-amyloid therapeutic strategies have yet to translate into useful therapies, suggesting that amyloid β-protein and its precursor, the amyloid precursor protein (APP) are but a part of the disease cascade. Further, risk of AD can be modulated by a number of factors, the most impactful being the ɛ4 isoform of apolipoprotein E (apoE)...
July 21, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28731195/inhibition-of-arc-promoting-the-apoptosis-of-rat-pulmonary-arterial-smooth-muscle-cells-after-serum-deprivation-in%C3%A2-vitro
#15
Jie Zhang, Zeyu Wu, Ming Guan, Hongyan Lu, Xuming Mo
Apoptosis has important pathophysiological consequences contributing to pulmonary arterial hypertension (PAH). However, the mechanism underlying apoptosis in PAH remains unknown. Apoptosis repressor with caspase recruitment domain (ARC) is an essential factor in cell apoptosis, and regulates intrinsic and extrinsic apoptosis signaling pathways. It is hypothesized that ARC may be involved in the apoptotic responses of pulmonary arterial smooth muscle cells (PASMCs) following mild chronic injury. In the present study, serum deprivation (SD) was used to induce apoptosis of PASMCs...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28730928/feasibility-of-na-18-f-pet-ct-and-mri-for-noninvasive-in-vivo-quantification-of-knee-pathophysiological-bone-metabolism-in-a-canine-model-of-post-traumatic-osteoarthritis
#16
Maria I Menendez, Bianca Hettlich, Lai Wei, Michael V Knopp
PURPOSE: To assess and quantify by molecular imaging knee osseous metabolic changes serially in an in vivo canine model of posttraumatic osteoarthritis (PTOA) of the knee utilizing sodium fluoride (Na(18)F) positron emission tomography (PET)/computed tomography (CT) coregistered with magnetic resonance imaging (MRI). MATERIALS AND METHODS: Sodium fluoride PET imaging of 5 canines was performed prior to anterior cruciate ligament transection (ACLT) and 2 times post-ACLT (3 and 12 weeks)...
January 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28730919/an-update-on-biomarker-discovery-and-use-in-systemic-sclerosis
#17
Takashi Matsushita, Kazuhiko Takehara
Systemic sclerosis (SSc) is an autoimmune disease characterized by excessive extracellular matrix deposition in the skin and internal organs. Three major abnormalities, autoimmunity, vasculopathy, and fibrosis, are considered to play important roles in the pathophysiology of SSc. SSc is a heterogeneous disease with clinical features, disease progress, therapeutic response, and prognosis. Therefore, identification of biomarkers, which can predict the course of the disease, is required for the progress of clinical practice...
July 21, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28730896/cannabinoid-hyperemesis-syndrome-potential-mechanisms-for-the-benefit-of-capsaicin-and-hot-water-hydrotherapy-in-treatment
#18
John R Richards, Jeff M Lapoint, Guillermo Burillo-Putze
INTRODUCTION: Cannabinoid hyperemesis syndrome is a clinical disorder that has become more prevalent with increasing use of cannabis and synthetic cannabinoids, and which is difficult to treat. Standard antiemetics commonly fail to alleviate the severe nausea and vomiting characteristic of the syndrome. Curiously, cannabinoid hyperemesis syndrome patients often report dramatic relief of symptoms with hot showers and baths, and topical capsaicin. OBJECTIVES: In this review, we detail the pharmacokinetics and pharmacodynamics of capsaicin and explore possible mechanisms for its beneficial effect, including activation of transient receptor potential vanilloid 1 and neurohumoral regulation...
July 21, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28730894/low-5-ht1b-receptor-binding-in-the-migraine-brain-a-pet-study
#19
Marie Deen, Hanne D Hansen, Anders Hougaard, Sofi da Cunha-Bang, Martin Nørgaard, Claus Svarer, Sune H Keller, Carsten Thomsen, Messoud Ashina, Gitte M Knudsen
Background The pathophysiology of migraine may involve dysfunction of serotonergic signaling. In particular, the 5-HT1B receptor is considered a key player due to the efficacy of 5-HT1B receptor agonists for treatment of migraine attacks. Aim To examine the cerebral 5-HT1B receptor binding in interictal migraine patients without aura compared to controls. Methods Eighteen migraine patients, who had been migraine free for >48 hours, and 16 controls were scanned after injection of the 5-HT1B receptor specific radioligand [(11)C]AZ10419369 for quantification of cerebral 5-HT1B receptor binding...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28730823/pathophysiological-analysis-of-the-progression-of-hepatic-lesions-in-stam-mice
#20
T Saito, M Muramatsu, Y Ishii, Y Saigo, T Konuma, Y Toriniwa, K Miyajima, T Ohta
Nonalcoholic steatohepatitis (NASH) is a current health issue since the disease often leads to hepatocellular carcinoma; however, the pathogenesis of the disease has still not been fully elucidated. In this study, we investigated the pathophysiological changes observed in hepatic lesions in STAM mice, a novel NASH model. STAM mice, high fat-diet (HFD) fed mice, and streptozotocin (STZ) treated mice were prepared, and changes over time, such as biological parameters, mRNA expression, and histopathological findings, were evaluated once animal reached 5, 7, and 10 weeks of age...
July 18, 2017: Physiological Research
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