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https://www.readbyqxmd.com/read/27911307/a-high-cholesterol-diet-increases-27-hydroxycholesterol-and-modifies-estrogen-receptor-expression-and-neurodegeneration-in-rabbit-hippocampus
#1
Sylwia W Brooks, Ava C Dykes, Bernard G Schreurs
Hypercholesterolemia has been implicated in numerous health problems from cardiovascular disease to neurodegeneration. High serum cholesterol levels in midlife have been associated with an increased risk of developing Alzheimer's disease (AD) later in life which suggests that the pathways leading to AD pathology might be activated decades before the symptoms of the disease are detected. Cholesterol-fed animals, particularly cholesterol-fed rabbits, exhibit brain pathology similar to the changes found in brains of AD patients...
November 28, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27909989/orexin-and-central-modulation-of-cardiovascular-and-respiratory-function
#2
Pascal Carrive, Tomoyuki Kuwaki
Orexin makes an important contribution to the regulation of cardiorespiratory function. When injected centrally under anesthesia, orexin increases blood pressure, heart rate, sympathetic nerve activity, and the amplitude and frequency of respiration. This is consistent with the location of orexin neurons in the hypothalamus and the distribution of orexin terminals at all levels of the central autonomic and respiratory network. These cardiorespiratory responses are components of arousal and are necessary to allow the expression of motivated behaviors...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27909620/is-normal-saline-the-best-irrigation-fluid-to-be-used-during-percutaneous-nephrolithotomy-in-renal-failure-patient-a-prospective-randomized-controlled-trial
#3
Bimalesh Purkait, Manoj Kumar, Ankur Bansal, Ashok Kumar Sokhal, Satya Narayan Sankhwar, Kawaljit Singh
OBJECTIVE: Endoscopic procedures like percutaneous nephrolithotomy (PCNL) needs continuous irrigation for better vision and to wash away stone fragments and blood clots. Systemic absorption of irrigation fluids may lead to fluid overload and electrolyte disequilibrium. Renal failure patients are more prone to these electrolyte disturbances. We have evaluated the outcomes of normal saline as irrigation solution to be used in renal failure patient in comparison to distilled water. METHODS: Seventy-six patients with renal calculi were enrolled in this study between September, 2014, and December, 2015...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27909511/internal-jugular-vein-complete-thrombosis-after-dual-chamber-pacemaker-implant
#4
Angelo Placci, Maria Mattioli, Maria Francesca Notarangelo, Gianluca Gonzi, Marco Zardini
Venous thrombosis after pacemaker implant is a known, although often underrecognized condition that can challenge system revision or upgrading, leading occasionally to thromboembolic complications. Several factors are considered to promote thrombus formation. Among them, alteration of blood flow mechanics due to the presence of catheters in the vessel lumen may itself play a pivotal role. Hereby we present the case of a 65-year old men who underwent a dual-chamber pacemaker implant in another institute for sick sinus syndrome by means of left cephalic venous access...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908418/lead-pb-exposure-promotes-diabetes-in-obese-rodents
#5
Jannifer B Tyrrell, Samar Hafida, Paul Stemmer, Angie Adhami, Todd Leff
BACKGROUND: Pb (lead) exposure occurs at elevated frequency in urban inner city populations that also have high rates of obesity and diabetes. OBJECTIVES: To determine if Pb can promote the development of diabetes in a setting of obesity, we examined the effect of Pb exposure on glucose metabolism in a rodent model of obesity. METHODS: Adult female ZDF rats were exposed to Pb in drinking water for 24 weeks. Fasting blood glucose, insulin, and glucose tolerance were measured at regular intervals...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27908199/hemoglobin-extravasation-in-the-brain-of-rats-exchange-transfused-with-hemoglobin-based-oxygen-carriers
#6
Laura Terraneo, Paola Bianciardi, Ashok Malavalli, Gnel Mkrtchyan, Stephanie N Spann, Jeff Lohman, Michele Samaja, Kim D Vandegriff
Haemoglobin (Hb)-based oxygen carriers are under consideration as oxygen therapeutics. Their effect on apoptosis is critical, because the onset of pro-apoptotic pathways may lead to tissue damage. MP4OX, a polyethylene glycol-conjugated human Hb preserves the baseline level of neuron apoptosis with respect to sham. Here we develop a method for measuring Hb extravasation in brain. We exchange transfused rats by haemorrhaging 50% of their blood with simultaneous, isovolemic replacement with Hextend (negative control), MP4OX, or αα-cross-linked Hb...
December 1, 2016: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/27906941/epidural-blood-patch-for-the-treatment-of-spontaneous-and-iatrogenic-orthostatic-headache
#7
Yun So, Jung Min Park, Pil-Moo Lee, Cho Long Kim, Cheolhan Lee, Jae Hun Kim
BACKGROUND: The cerebrospinal fluid (CSF) leakage could be happened spontaneously or related to the procedures such as spinal anesthesia, epidural anesthesia, CSF tapping, intrathecal chemotherapy or other spinal procedures. The leakage of CSF leads to intracranial hypotension of which distinguishing clinical feature is orthostatic headache. The epidural blood patch is a gold-standard treatment for intracranial hypotension-related orthostatic headaches. OBJECTIVE: We conducted this study to compare the efficacy and number of epidural blood patches for spontaneous and iatrogenic orthostatic headaches...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27906880/hypoglycemia-in-patients-with-insulin%C3%A2-treated-diabetes
#8
Janusz Gumprecht, Katarzyna Nabrdalik
Hypoglycemia is the major barrier for optimal glycemic control in patients on maintenance insulin therapy. It is widely known that good glycemic control leads to prevention of or delay in the development of microvascular complications, and can reduce macrovascular events. It is thought that hypoglycemia may predispose patients to cognitive deterioration and may negatively affect the cardiovascular system. Hypoglycemia per se can contribute to a blunted counterregulatory response and disabling hypoglycemia, while hypoglycemia avoidance restores normal response to low blood glucose levels...
October 11, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27905999/factors-associated-with-hiv-viral-load-blips-and-the-relationship-between-self-reported-adherence-and-efavirenz-blood-levels-on-blip-occurrence-a-case-control-study
#9
Aaron Farmer, Xun Wang, Anuradha Ganesan, Robert G Deiss, Brian K Agan, Thomas A O'Bryan, Kevin Akers, Jason F Okulicz
BACKGROUND: The uncertain etiology of HIV viral load (VL) blips may lead to increased use of clinical resources. We evaluated the association of self-reported adherence (SRA) and antiretroviral (ART) drug levels on blip occurrence in US Military HIV Natural History Study (NHS) participants who initiated the single-tablet regimen efavirenz/emtricitabine/tenofovir disoproxil fumarate (EFV/FTC/TDF). METHODS: ART-naïve NHS participants started on EFV/FTC/TDF between 2006 and 2013 who achieved VL suppression (<50 copies/mL) within 12 months and had available SRA and stored plasma samples were included...
March 22, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905536/post-translational-incorporation-of-l-phenylalanine-into-the-c-terminus-of-%C3%AE-tubulin-as-a-possible-cause-of-neuronal-dysfunction
#10
Yanina Ditamo, Yanela M Dentesano, Silvia A Purro, Carlos A Arce, C Gastón Bisig
α-Tubulin C-terminus undergoes post-translational, cyclic tyrosination/detyrosination, and L-Phenylalanine (Phe) can be incorporated in place of tyrosine. Using cultured mouse brain-derived cells and an antibody specific to Phe-tubulin, we showed that: (i) Phe incorporation into tubulin is reversible; (ii) such incorporation is not due to de novo synthesis; (iii) the proportion of modified tubulin is significant; (iv) Phe incorporation reduces cell proliferation without affecting cell viability; (v) the rate of neurite retraction declines as level of C-terminal Phe incorporation increases; (vi) this inhibitory effect of Phe on neurite retraction is blocked by the co-presence of tyrosine; (vii) microtubule dynamics is reduced when Phe-tubulin level in cells is high as a result of exogenous Phe addition and returns to normal values when Phe is removed; moreover, microtubule dynamics is also reduced when Phe-tubulin is expressed (plasmid transfection)...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905373/-enteral-distress-syndrome-in-surgery-definition-pathogenesis-diagnosis
#11
A P Vlasov, V A Trofimov, T I Grigor'eva, V A Shibitov, P A Vlasov
It was performed a comprehensive experimental and clinical study of functional and metabolic status of the intestine in acute peritonitis, pancreatic necrosis, acute intestinal obstruction. We obtained objective data of impaired barrier function based on levels of toxins in arterial and mesenteric venous blood. Association of organ and organismic homeostatic changes was revealed. It was proved an important role of membrane-destabilizing processes in intestinal epithelium as a cause of enteral insufficiency...
2016: Khirurgiia
https://www.readbyqxmd.com/read/27905308/a-case-of-extreme-hypokalaemia
#12
L M Ten Bos, T C Veenstra, B D Westerhof, F H Bosch
Hypokalaemia is a common clinical problem. It can lead to severe disturbances in cardiac, neurological and muscle function. We present the case of a 45-year-old woman who was transported to our hospital with cardiac arrest following ventricular fibrillation. Blood sampling revealed severe acidosis (pH 7.02) and extreme hypokalaemia (0.9 mmol/l). The low serum potassium level was most likely caused by the combination of a very deficient diet and use of a thiazide diuretic. She never reported any symptoms. An acute intracellular shift of potassium due to epinephrine and perhaps also the cathecholamines in Red Bull may have further decreased the serum potassium concentration...
November 2016: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/27905100/the-severity-of-anaemia-depletes-cerebrovascular-dilatory-reserve-in-children-with-sickle-cell-disease-a-quantitative-magnetic-resonance-imaging-study
#13
Przemyslaw D Kosinski, Paula L Croal, Jackie Leung, Suzan Williams, Isaac Odame, Gregory M T Hare, Manohar Shroff, Andrea Kassner
Overt ischaemic stroke is one of the most devastating complications in children with sickle cell disease (SCD). The compensatory response to anaemia in SCD includes an increase in cerebral blood flow (CBF) by accessing cerebrovascular dilatory reserve. Exhaustion of dilatory reserve secondary to anaemic stress may lead to cerebral ischaemia. The purpose of this study was to investigate CBF and cerebrovascular reactivity (CVR) using magnetic resonance imaging (MRI) in children with SCD and to correlate these with haematological markers of anaemia...
December 1, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27904629/effect-of-various-kinds-of-beverages-on-stress-oxidative-f2-isoprostane-serum-lipid-and-blood-glucose-of-elite-taekwondo-players
#14
Zahra Maghsoudi, Ashfin Shiranian, Gholamreza Askai, Reza Ghaisvand
BACKGROUND: Athletes' recovery is important in improving their performance. Nutritional strategies can be effective in enhancing recovery rate. Choosing the best food items in appropriate intervals can play effective roles in resynthesis of fuels and recovery of muscle injury. Beverage micro and macronutrient content are helpful in fuel restoration. In this study, we assess the effects of various kinds of beverages on oxidative stress, muscle injury, and metabolic risk factors in taekwondo players...
September 2016: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/27904574/comparison-of-early-period-results-of-blood-use-in-open-heart-surgery
#15
Serhat Huseyin, Volkan Yuksel, Orkut Guclu, Fatma Nesrin Turan, Suat Canbaz, Turan Ege, Hasan Sunar
BACKGROUND: Various adverse effects of homologous blood transfusion detected particularly in open heart surgery, in which it is frequently used, lead researchers to study on autologous blood use and to evaluate the patient's blood better. Due to the complications of homologous blood transfusion, development of techniques that utilize less transfusion has become inevitable. We aimed to evaluate the effects of acute normovolemic hemodilution (ANH) in patients undergoing open heart surgery...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904154/circadian-rhythm-of-blood-pressure-and-the-renin-angiotensin-system-in-the-kidney
#16
REVIEW
Naro Ohashi, Shinsuke Isobe, Sayaka Ishigaki, Hideo Yasuda
Activation of the intrarenal renin-angiotensin system (RAS) has a critical role in the pathophysiology of the circadian rhythm of blood pressure (BP) and renal injury, independent of circulating RAS. Although it is clear that the circulating RAS has a circadian rhythm, reports of a circadian rhythm in tissue-specific RAS are limited. Clinical studies evaluating intrarenal RAS activity by urinary angiotensinogen (AGT) levels have indicated that urinary AGT levels were equally low during both the daytime and nighttime in individuals without chronic kidney disease (CKD) and that urinary AGT levels were higher during the daytime than at nighttime in patients with CKD...
December 1, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/27903879/the-analysis-of-qt-interval-and-repolarization-morphology-of-the-heart-in-chronic-exposure-to-lead
#17
J Kiełtucki, M Dobrakowski, N Pawlas, B Średniawa, M Boroń, S Kasperczyk
There are no common recommendations regarding electrocardiographic monitoring in occupationally exposed workers. Therefore, the present study was designed to investigate whether exposure to lead results in an increase of selected electrocardiography (ECG) pathologies, such as QT interval prolongation and repolarization disorders, in occupationally exposed workers. The study group included 180 workers occupationally exposed to lead compounds. The exposed group was divided according to the median of the mean blood lead level (PbBmean) calculated based on a series of measurements performed during 5-year observation period (35 µg/dl) into two subgroups: low exposure (LE, PbBmean = 20...
November 30, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27902332/inhibition-of-hepatitis-b-virus-replication-by-activation-of-the-cgas-sting-pathway
#18
Jing He, Ruidong Hao, Dan Liu, Xing Liu, Shaoshuai Wu, Shuting Guo, Yuan Wang, Deyin Guo
Cyclic GMP-AMP (cGAMP) synthase (cGAS) senses cytosolic DNA and catalyzes synthesis of the second messenger cGAMP, which activates the downstream signaling adaptor protein STING, leading to the expression of type I interferons. Hepatitis B virus (HBV) is a small DNA virus, and the cGAS-STING pathway may inhibit HBV RNA synthesis and viral assembly in cell culture, but the exact roles of cGAS pathway in the restriction of HBV replication in infection systems remain to be elucidated. In this study, we showed that the replication of HBV was significantly inhibited both in cell culture and in vivo in a mouse model when the cGAS-STING pathway was activated by dsDNA or cGAMP...
October 31, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27901337/the-effect-of-exercise-induced-weight-loss-on-myokines-and-adipokines-in-overweight-sedentary-females-steps-aerobics-vs-jogging-walking-exercises
#19
Halil Duzova, Esin Gullu, Guner Cicek, Burcu K Koksal, Basak Kayhan, Abdullah Gullu, Ibrahim Sahin
BACKGROUND: The objectives of this study were to verify effects of step-aerobic exercise (SAE) and jogging-walking exercise (JWE) program on myokines and adipokines levels in overweight sedentary females. METHODS: Volunteer subjects (n=25) were assigned to two exercise groups: steps aerobics and jogging-walking. The exercise program given to them was for five days a week and for twelve weeks period. Serum samples were collected from venous blood before and immediately after cardio-respiratory fitness test (CRF) by Bruce protocol and stored at -80 C until they were assayed before 12 weeks exercise program...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27901325/asymptomatic-carotid-artery-stenosis-who-should-be-screened-who-should-be-treated-and-how-should-we-treat-them
#20
Djurre D DE Waard, Dylan Morris, Gert J DE Borst, Richard Bulbulia, Alison Halliday
Although stopping smoking, lowering blood pressure and reducing lipid levels will reduce global stroke risk and cardiovascular mortality, these remain leading causes of death and disability especially in ageing populations. Further prevention strategies are needed and, in the first part of this review, we explore the potential benefits of appropriate screening for carotid artery disease to reduce stroke and identify those who may have related cardiac disease. Although whole-population carotid screening is an inefficient and costly means of identifying candidates with tight carotid stenosis who might warrant intervention, it can identify many people with lower levels of stenosis who may benefit from cardiovascular risk reducing medications...
November 30, 2016: Journal of Cardiovascular Surgery
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