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https://www.readbyqxmd.com/read/28226322/chronic-administration-of-rosa-canina-hydro-alcoholic-extract-attenuates-depressive-like-behavior-and-recognition-memory-impairment-in-diabetic-mice-a-possible-role-of-oxidative-stress
#1
Ramin Farajpour, Saeed Sadigh-Eteghad, Nahid Ahmadian, Mohammad Farzipour, Javad Mahmoudi, Alireza Majdi
OBJECTIVE: This study was designed to evaluate whether or not chronic Rosa Canina (RC) extract administration could improve recognition memory and depressive-like behaviour in diabetic mice. MATERIALS AND METHODS: Seventy-five (75) male Albino mice (25-30 g) were randomly divided into five groups (15 in each group). A single intraperitoneal (ip) injection of 200 mg/kg streptozotocin (STZ) was administered to the mice to induce diabetes. The control group received normal saline, and the diabetic groups received normal saline or 50, 250 and 500 mg/kg of RC extract for 28 days...
February 22, 2017: Medical Principles and Practice: International Journal of the Kuwait University, Health Science Centre
https://www.readbyqxmd.com/read/28225809/the-renal-consequences-of-maternal-obesity-in-offspring-are-overwhelmed-by-postnatal-high-fat-diet
#2
Sarah J Glastras, Hui Chen, Michael Tsang, Rachel Teh, Rachel T McGrath, Amgad Zaky, Jason Chen, Muh Geot Wong, Carol A Pollock, Sonia Saad
AIMS/HYPOTHESIS: Developmental programming induced by maternal obesity influences the development of chronic disease in offspring. In the present study, we aimed to determine whether maternal obesity exaggerates obesity-related kidney disease. METHODS: Female C57BL/6 mice were fed high-fat diet (HFD) for six weeks prior to mating, during gestation and lactation. Male offspring were weaned to normal chow or HFD. At postnatal Week 8, HFD-fed offspring were administered one dose streptozotocin (STZ, 100 mg/kg i...
2017: PloS One
https://www.readbyqxmd.com/read/28225710/chronic-stress-exacerbates-neuropathic-pain-via-the-integration-of-stress-affect-related-information-with-nociceptive-information-in-the-central-nucleus-of-the-amygdala
#3
Ming-Jia Li, Ling-Yu Liu, Lin Chen, Jie Cai, You Wan, Guo-Gang Xing
Exacerbation of pain by chronic stress and co-morbidity of pain with stress-related psychiatric disorders including anxiety and depression, represent significant clinical challenges. However, the underlying mechanisms still remain unclear. Here, we investigated whether chronic forced swim (FS) stress-induced exacerbation of neuropathic pain is mediated by the integration of stress-affect related information with nociceptive information in the central nucleus of the amygdala (CeA). We first demonstrated that chronic FS stress (CFSS) indeed produces both depressive-like behaviors and exacerbation of spared nerve injury (SNI)-induced mechanical allodynia in rats...
December 29, 2016: Pain
https://www.readbyqxmd.com/read/28225578/detection-of-volume-alterations-in-hippocampal-subfields-of-rats-under-chronic-unpredictable-mild-stress-using-7t-mri-a-follow-up-study
#4
Yuefeng Li, Xiaolan Zhu, Shenghong Ju, Jinchuan Yan, Dongqing Wang, Yan Zhu, Fengchao Zang
PURPOSE: To determine hippocampal subfields volume loss in depression, which was simulated by a rat chronic unpredictable mild stress (CUMS) model. As different cellular and molecular characteristics in hippocampal subfields, these subfields are regarded as differentially vulnerable to processes associated with stress. MATERIALS AND METHODS: Twenty male Wistar rats were exposed to various stressors until the model was successfully established. The effects of physical exercise on recovery of hippocampal volume in depressed rats were simulated using the wheel running test (WRT)...
February 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28225475/stretching-exercises-improve-vascular-endothelial-dysfunction-through-attenuation-of-oxidative-stress-in-chronic-heart-failure-patients-with-an-implantable-cardioverter-defibrillator
#5
Michitaka Kato, Takashi Masuda, Michio Ogano, Kazuki Hotta, Hisato Takagi, Shinya Tanaka, Yumi Kamada, Ayako Akiyama, Daisuke Kamekawa, Ryosuke Shimizu, Minoru Tabata, Jun Tanabe, Takuya Umemoto
PURPOSE: Endurance training improves oxidative stress and vascular endothelial dysfunction in patients with chronic heart failure (CHF). However, patients with CHF and an implantable cardioverter defibrillator (ICD) or cardiac resynchronization therapy-defibrillator (CRT-D) often avoid endurance training for fear of ICD shock. Recent studies have reported that stretching exercises enhance antioxidant activity and improve vascular responses. Therefore, we aimed to assess the effects of 4 weeks of stretching exercises on oxidative stress and vascular endothelial function in patients with CHF with an ICD or CRT-D...
March 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28225048/thiamine-deficiency-oxidative-metabolic-pathways-and-ethanol-induced-neurotoxicity-how-poor-nutrition-contributes-to-the-alcoholic-syndrome-as-marchiafava-bignami-disease
#6
REVIEW
L M P Fernandes, F R Bezerra, M C Monteiro, M L Silva, F R de Oliveira, R R Lima, E A Fontes-Júnior, C S F Maia
Ethanol is an important risk factor for the occurrence of several brain disorders that depend on the amount, period and frequency of its consumption. Chronic use of ethanol often leads to the development of neurodegenerative syndromes, which cause morphological and functional impairments such as foetal alcohol syndrome in newborns exposed to ethanol during pregnancy, Wernicke-Korsakoff Syndrome and, more rarely, Marchiafava-Bignami disease (MBD). MBD is characterized by primary degeneration of the corpus callosum, without inflammation and is associated with oxidative stress and hypovitaminosis, as well as altered mental status, to mention dementia, seizures, depression and so on...
February 22, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28224921/lemna-minor-plants-chronically-exposed-to-ionising-radiation-rna-seq-analysis-indicates-a-dose-rate-dependent-shift-from-acclimation-to-survival-strategies
#7
Arne Van Hoeck, Nele Horemans, Robin Nauts, May Van Hees, Hildegarde Vandenhove, Ronny Blust
Ecotoxicological research provides knowledge on ionising radiation-induced responses in different plant species. However, the sparse data currently available are mainly extracted from acute exposure treatments. To provide a better understanding of environmental exposure scenarios, the response to stress in plants must be followed in more natural relevant chronic conditions. We previously showed morphological and biochemical responses in Lemna minor plants continuously exposed for 7days in a dose-rate dependent manner...
April 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28224472/effects-of-weight-reduction-after-sleeve-gastrectomy-on-metabolic-variables-in-saudi-obese-subjects-in-aseer-province-of-kingdom-of-saudi-arabia
#8
Mohammed A Bawahab, Abdullah S Assiri, Walid Abdel Maksoud, Ayyub Patel, Osama Kadoumi, Gaffar Sarwar Zaman, Riyad Mohammed Khalil Alessih, Syed Saleem Haider
OBJECTIVES: The objectives of this study were to investigate the occurrence of oxidative stress, status of protective antioxidants enzymes, inflammatory biomarkers, and some metabolic health variables in the blood and to compare the results between those of the normal controls and obese patients submitted to sleeve gastrectomy-induced weight loss over a 1-year follow-up period. MATERIALS AND METHODS: A prospective study was conducted in Aseer Central Hospital and Abha Private Hospital in the Kingdom of Saudi Arabia from January 2012 to January 2013 on 50 normal (BMI = 22-25 kg/m(2)) control subjects and 50 obese (BMI = 45-50 kg/m(2)) patients...
February 21, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28224183/modelling-depression-in-animals-at-the-interface-of-reward-and-stress-pathways
#9
REVIEW
D A Slattery, J F Cryan
RATIONALE: Despite substantial research efforts the aetiology of major depressive disorder (MDD) remains poorly understood, which is due in part to the heterogeneity of the disorder and the complexity of designing appropriate animal models. However, in the last few decades, a focus on the development of novel stress-based paradigms and a focus on using hedonic/anhedonic behaviour have led to renewed optimism in the use of animal models to assess aspects of MDD. OBJECTIVES: Therefore, in this review article, dedicated to Athina Markou, we summarise the use of stress-based animal models for studying MDD in rodents and how reward-related readouts can be used to validate/assess the model and/or treatment...
February 22, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28224126/antioxidant-effects-of-the-quercetin-in-the-jejunal-myenteric-innervation-of-diabetic-rats
#10
Sara R Garcia de Souza, Marcílio Hubner de Miranda Neto, Juliana Vanessa Colombo Martins Perles, Flávia Cristina Vieira Frez, Isabela Zignani, Francielle Veiga Ramalho, Catchia Hermes-Uliana, Gleison Daion Piovezana Bossolani, Jacqueline Nelisis Zanoni
PURPOSE: Enteric glial cells (EGCs) exert a critical role in the structural integrity, defense, and metabolic function of enteric neurons. Diabetes mellitus is a chronic disease characterized by metabolic disorders and chronic autonomic neuropathy. Quercetin supplementation, which is a potent antioxidant, has been used in order to reduce the effects of diabetes-induced oxidative stress. The purpose of this research was to investigate the effects of quercetin supplementation in the drinking water at a daily dose of 40 mg on the glial cells and neurons in the jejunum of diabetic rats...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28223962/molecular-mechanisms-in-mood-regulation-involving-the-circadian-clock
#11
REVIEW
Urs Albrecht
The circadian system coordinates activities and functions in cells and tissues in order to optimize body functions in anticipation to daily changes in the environment. Disruption of the circadian system, due to irregular lifestyle such as rotating shift work, frequent travel across time-zones, or chronic stress, is correlated with several diseases such as obesity, cancer, and neurological disorders. Molecular mechanisms linking the circadian clock with neurological functions have been uncovered suggesting that disruption of the clock may be critically involved in the development of mood disorders...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28223818/an-evidence-based-review-on-urate-lowering-treatments-implications-for-optimal-treatment-of-chronic-hyperuricemia
#12
REVIEW
Marilisa Bove, Arrigo Francesco Giuseppe Cicero, Maddalena Veronesi, Claudio Borghi
Several studies suggest that chronic hyperuricemia, the main precursor of gout, is involved in the pathogenesis of different systemic disorders that affect cardiovascular and renal systems, such as hypertension, obesity, hypercholesterolemia, atherosclerosis, metabolic syndrome, chronic heart failure, and chronic kidney disease. Recent epidemiological evidence has shown an increasing trend in the prevalence of hyperuricemia and gout in the Western world: a number of population-based studies estimate a prevalence of up to 21% for hyperuricemia and 1%-4% for gout...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/28223696/radiation-exposure-in-the-remote-period-after-the-chernobyl-accident-caused-oxidative-stress-and-genetic-effects-in-scots-pine-populations
#13
Polina Yu Volkova, Stanislav A Geras'kin, Elizaveta A Kazakova
Even 30 years after the Chernobyl accident, biological effects of irradiation are observed in the chronically exposed Scots pine populations. Chronic radiation exposure at dose rates above 50 mGy∙yr(-1) caused oxidative stress and led to the increase of antioxidants concentrations in these populations. Genetic variability was examined for 6 enzymes and 14 enzymatic loci of 6 Scots pine populations. Dose rates over 10 mGy∙yr(-1) caused the increased frequency of mutations and changes in genetic structure of Scots pine populations...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223291/ctrp7-deletion-attenuates-obesity-linked-glucose-intolerance-adipose-tissue-inflammation-and-hepatic-stress
#14
Pia S Petersen, Xia Lei, Risa M Wolf, Susana Rodriguez, Stefanie Y Tan, Hannah C Little, Michael A Schweitzer, Thomas H Magnuson, Kimberley E Steele, G William Wong
Chronic low-grade inflammation and cellular stress are important contributors to obesity-linked metabolic dysfunction. Here, we uncover an immune-metabolic role for C1q/TNF-related protein 7 (CTRP7), a secretory protein of the C1q family with previously unknown function. In obese humans, circulating CTRP7 levels were markedly elevated and positively correlated with BMI, glucose, insulin, insulin resistance index, hemoglobin A1c, and triglyceride levels. Expression of CTRP7 in liver was also significantly upregulated in obese humans and positively correlated with gluconeogenic genes...
February 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28223109/fluoride-exposure-abates-pro-inflammatory-response-and-induces-in-vivo-apoptosis-rendering-zebrafish-danio-rerio-susceptible-to-bacterial-infections
#15
Rashmi Singh, Preeti Khatri, Nidhi Srivastava, Shruti Jain, Vani Bramchari, Asish Mukhopadhyay, Shibnath Mazumder
The present study describes the immunotoxic effect of chronic fluoride exposure on adult zebrafish (Danio rerio). Zebrafish were exposed to fluoride (71.12 mg/L; 1/10 LC50) for 30 d and the expression of selected genes studied. We observed significant elevation in the detoxification pathway gene cyp1a suggesting chronic exposure to non-lethal concentration of fluoride is indeed toxic to fish. Fluoride mediated pro-oxidative stress is implicated with the downregulation in superoxide dismutase 1 and 2 (sod1/2) genes...
February 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28222901/pharmacotherapy-in-smoking-cessation-corticotropin-releasing-factor-receptors-as-emerging-intervention-targets
#16
REVIEW
Ioannis Sotiriou, Kleanthi Chalkiadaki, Christos Nikolaidis, Kyriaki Sidiropoulou, Ekaterini Chatzaki
Smoking represents perhaps the single most important health risk factor and a global contributor to mortality that can unquestionably be prevented. Smoking is responsible for many diseases, including various types of cancer, chronic obstructive pulmonary disease, coronary heart disease, peripheral vascular disease and peptic ulcer, while it adversely affects fetal formation and development. Since smoking habit duration is a critical factor for mortality, the goal of treatment should be its timely cessation and relapse prevention...
February 14, 2017: Neuropeptides
https://www.readbyqxmd.com/read/28222401/combination-of-sitagliptin-and-silymarin-ameliorates-liver-fibrosis-induced-by-carbon-tetrachloride-in-rats
#17
Samia Salem Sokar, Magda El-Sayed El-Sayad, Mai El-Sayed Ghoneim, Abdelhadi Mohamed Shebl
Liver fibrosis is a common pathological condition that occurs in most conditions associated with chronic liver injury. Silymarin is a herbal product widely used for its hepatoprotective effect. Sitagliptin, a dipeptidyl peptidase-4 inhibitor (DPP4-I), is clinically used as an oral antidiabetic agent. This study was designed to investigate the effects of Sitagliptin, Silymarin, and their combination on established liver fibrosis in carbon tetrachloride (CCl4) rat model. Male albino rats received intraperitoneal injections of CCl4 three times a week for 7 weeks, as well as daily oral treatments of Sitagliptin (100mg/kg) or Silymarin (100mg/kg) or their combination during the 7 weeks of intoxication...
February 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28222165/stress-increases-the-risk-of-type-2-diabetes-onset-in-women-a-12-year-longitudinal-study-using-causal-modelling
#18
Melissa L Harris, Christopher Oldmeadow, Alexis Hure, Judy Luu, Deborah Loxton, John Attia
BACKGROUND: Type 2 diabetes is associated with significant morbidity and mortality. Modifiable risk factors have been found to contribute up to 60% of type 2 diabetes risk. However, type 2 diabetes continues to rise despite implementation of interventions based on traditional risk factors. There is a clear need to identify additional risk factors for chronic disease prevention. The aim of this study was to examine the relationship between perceived stress and type 2 diabetes onset, and partition the estimates into direct and indirect effects...
2017: PloS One
https://www.readbyqxmd.com/read/28221237/ptsd-orientation-to-pain-and-pain-perception-in-ex-prisoners-of-war-who-underwent-torture
#19
Noga Tsur, Ruth Defrin, Karni Ginzburg
OBJECTIVE: Studies suggest that torture survivors often suffer long-term chronic pain and increased pain perception. However, it is unclear whether the actual experience of torture, or rather the subsequent posttraumatic stress disorder (PTSD), explains these pain problems. Furthermore, while catastrophic and fearful orientations to pain have been suggested to play a significant role in the association between trauma and pain, the underlying mechanisms remain unclear. This study examined whether chronic pain and pain perception among torture survivors are associated with torture experience or PTSD and whether catastrophic and fearful orientations mediate or moderate these associations...
February 17, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28220848/elevated-expression-of-placental-growth-factor-is-associated-with-airway-wall-vascular-remodelling-and-thickening-in-smokers-with-asthma
#20
Dong Wu, Tianwen Lai, Yalian Yuan, Min Chen, Jun Xia, Wen Li, Guihai Pan, Binfan Yuan, Quanchao Lv, Yanyu Li, Dongmin Li, Bin Wu
The increased expression of placental growth factor (PlGF) in chronic obstructive pulmonary disease and allergy-related asthma suggests its role in the pathogenesis of these diseases. In asthmatic smokers, airway remodelling is accompanied by an accelerated decline in lung function. However, whether PlGF contributes to the persistent airflow obstruction and vascular remodelling typically seen in asthmatic smokers is unknown. In this study we measured lung function, airway-wall thickening, and PlGF levels in serum and induced sputum in 74 asthmatic and 42 healthy smokers and never-smokers...
February 21, 2017: Scientific Reports
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