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Skin blood flow

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https://www.readbyqxmd.com/read/29141048/microcirculation-in-open-vs-minimally-invasive-dorsal-stabilization-of-thoracolumbar-fractures
#1
Bergita Ganse, Miguel Pishnamaz, Philipp Kobbe, Christian Herren, Gertraud Gradl-Dietsch, Franziska Böhle, Bernd Johannes, Bong-Sung Kim, Klemens Horst, Matthias Knobe
Standard open and percutaneous minimally invasive surgical procedures co-exist in the treatment of fractures of the thoracolumbar spine. Shorter skin incisions just above the pedicles are used in minimally invasive procedures. Full-length skin incisions and invasive preparations are applied in the standard open approach. While both methods show equivalent rates of intraoperative surgical complications and comparable clinical and radiological outcomes, blood loss and operation time have shown to be decreased in minimally invasive treatment...
2017: PloS One
https://www.readbyqxmd.com/read/29135140/-general-clinical-and-laboratory-and-instrumental-characteristics-of-the-chronic-nonbapterial-prostatite-with-the-inflammatory-component-in-men-of-the-first-period-of-mature-age
#2
Yu Yu Vinnik, V V Borisov
AIM: To investigate the course of CNPIC in young men treated with general and local ozone therapy. MATERIALS AND METHODS: 306 patients underwent standard treatment concurrently with local and systemic ozone therapy. Clinical-laboratory and instrumental parameters were evaluated before and after treatment. In addition, the blood flow of the prostate, prostatic urethra and skin at the projection point of the prostate was studied. RESULTS: Standard treatment of CNPIC with the concurrent use of general and local ozone therapy resulted in a reduction of pain intensity and severity of dysuria, improvement of the sexual function and quality of life of men...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29132429/characterization-of-skin-function-associated-with-obesity-and-specific-correlation-to-local-systemic-parameters-in-american-women
#3
Shinobu Mori, Akiko Shiraishi, Karen Epplen, Desiree Butcher, Daiki Murase, Yuka Yasuda, Takatoshi Murase
BACKGROUND: Obesity is considered problematic not only as a major cause of diabetes, hypertension, and dyslipidemia, but also as a risk of intractable dermatosis; however influence of obesity on skin function has not been clarified. To clarify the mechanism of obesity-associated skin disorders, we aimed to characterize the skin function of subjects with obesity, and identify possible influencing factors. METHODS: Complex analyses including instrumental measurement, biochemical and lipidomics were performed for facial skin and physical evaluation in 93 Caucasian women with obesity (OB) and non-obesity (NOB)...
November 13, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29122959/prefrontal-oxygenation-correlates-to-the-responses-in-facial-skin-blood-flows-during-exposure-to-pleasantly-charged-movie
#4
Kanji Matsukawa, Kana Endo, Ryota Asahara, Miho Yoshikawa, Shinya Kusunoki, Tomoko Ishida
Our laboratory reported that facial skin blood flow may serve as a sensitive tool to assess an emotional status. Cerebral neural correlates during emotional interventions should be sought in relation to the changes in facial skin blood flow. To test the hypothesis that prefrontal activity has positive relation to the changes in facial skin blood flow during emotionally charged stimulation, we examined the dynamic changes in prefrontal oxygenation (with near-infrared spectroscopy) and facial skin blood flows (with two-dimensional laser speckle and Doppler flowmetry) during emotionally charged audiovisual challenges for 2 min (by viewing comedy, landscape, and horror movie) in 14 subjects...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29122256/cupping-therapy-an-analysis-of-the-effects-of-suction-on-skin-and-the-possible-influence-on-human-health
#5
REVIEW
Duane T Lowe
BACKGROUND: Cupping therapy is a traditional therapy that has been employed worldwide for thousands of years. Despite a lack of quality clinical studies evaluating the efficacy of cupping therapy, its long history and widespread use throughout the world suggests the commonly claimed health benefits should not be completely discounted as without merit. PURPOSE: The goal of this paper is to present the research detailing what is known concerning the effects of suction on skin and underlying tissue, and the reaction of the body to that stimulus...
November 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/29118201/inflow-of-oxygen-and-glucose-into-brain-tissue-induced-by-intravenous-norepinephrine-relationships-with-central-metabolic-and-peripheral-vascular-responses
#6
R Aaron Bola, Eugene A Kiyatkin
As an essential part of sympathetic activation that prepares the organism for "fight or flight," peripheral norepinephrine (NE) plays an important role in regulating cardiac activity and the tone of blood vessels, increasing blood flow to the heart and the brain and decreasing blood flow to the organs not as necessary for immediate survival. To assess whether this effect is applicable to the brain, we used high-speed amperometry to measure the changes in nucleus accumbens (NAc) levels of oxygen and glucose induced by intravenous (iv) injections of NE in awake, freely-moving rats...
November 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29118023/the-orchestration-of-autonomous-and-behavioral-thermoregulation
#7
Boris R M Kingma
There seems to be an efficient order in the recruitment of thermo-effectors, which allows for body temperature regulation at minimal cost of nutrients and water. But how does thermal behaviour fit in this order? In this edition Schlader et al. hypothesized that thermal behavior fits in the orderly recruitment of thermo-effectors as follows: 1) vasomotor responses, 2) behavioral responses, and 3) sweating or metabolic responses. Their results support this hypothesis by showing consistently for heating and cooling that non-glabrous skin blood flow changes immediately with changes in skin temperature, followed by the initiation of a behavioral response...
November 8, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29117995/the-role-of-mitochondria-derived-reactive-oxygen-species-in-microvascular-dysfunction-in-chronic-kidney-disease
#8
Danielle L Kirkman, Bryce J Muth, Meghan G Ramick, Raymond R Townsend, David G Edwards
Cardiovascular disease is the leading cause of mortality in Chronic Kidney Disease (CKD). Mitochondrial dysfunction secondary to CKD is a potential source of oxidative stress that may impair vascular function. This study sought to determine if mitochondria derived reactive oxygen species contribute to microvascular dysfunction in Stage 3-5 CKD. Cutaneous vasodilation in response to local heating was assessed in 20 CKD patients (60±13 years; eGFR 46±13ml/kg/1.73m2) and eleven matched healthy participants (58±2 years; eGFR>90ml/kg/1...
November 8, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29114529/rehabilitation-training-in-artificially-heated-environment
#9
Ping-Chung Leung
Sauna has become a popular club house facility where the dweller enjoys relaxation. Some exercise groups like yoga and Qigong practitioners, are making use of the heated environment to achieve quicker and better results of trainings. Sauna therapy is producing a thermal stress through hyperthermia. The cardiovascular system readily responds by increasing the heart rate which can become double the resting stage within minutes and cardiac output may have a 70% increase. The body's surface response to heat leads to a 40% of decrease in peripheral vascular resistance, thus allowing rapid peripheral blood flow which is responsible for greater heat dispersal directly from the skin...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29110444/noninvasive-in-vivo-optical-characterization-of-blood-flow-and-oxygen-consumption-in-the-superficial-plexus-of-skin
#10
Faezeh Talebi Liasi, Ravikant Samatham, Steven L Jacques
Assessing the metabolic activity of a tissue, whether normal, damaged, aged, or pathologic, is useful for diagnosis and evaluating the effects of drugs. This report describes a handheld optical fiber probe that contacts the skin, applies pressure to blanch the superficial vascular plexus of the skin, then releases the pressure to allow refill of the plexus. The optical probe uses white light spectroscopy to record the time dynamics of blanching and refilling. The magnitude and dynamics of changes in blood content and hemoglobin oxygen saturation yield an estimate of the oxygen consumption rate (OCR) in units of attomoles per cell per second...
November 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29104055/improving-the-direct-penetration-into-tissues-underneath-the-skin-with-iontophoresis-delivery-of-a-ketoprofen-cationic-prodrug
#11
Shabbir Lobo, Guang Yan
Current topical nonsteroidal anti-inflammatory drugs (NSAIDs) showed marginal efficacy in treatment of musculoskeletal disorders due to their fast clearance by skin blood flow and thus little direct penetration into the underlying muscle and joint tissues. Using ketoprofen (Kt) as a model NSAID and converting it to a cationic ester prodrug ketoprofen choline chloride (KCC), this study was to investigate the iontophoresis delivery of the prodrug KCC for improving the drug retention in the skin and the direct penetration into underlying tissues...
November 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29092565/flow-induced-vibration-analysis-of-constricted-artery-models-with-surrounding-soft-tissue
#12
Huseyin Enes Salman, Yigit Yazicioglu
Arterial stenosis is a vascular pathology which leads to serious cardiovascular diseases. Blood flow through a constriction generates sound and vibration due to fluctuating turbulent pressures. Generated vibro-acoustic waves propagate through surrounding soft tissues and reach the skin surface and may provide valuable insight for noninvasive diagnostic purposes. Motivated by the aforementioned phenomena, vibration of constricted arteries is investigated employing computational models. The flow-induced pressure field in an artery is modeled as broadband harmonic pressure loading based on previous studies in the literature and applied on the inner artery wall...
October 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29083474/alopecia-areata-is-characterized-by-expansion-of-circulating-th2-tc2-th22-within-the-skin-homing-and-systemic-t-cell-populations
#13
Tali Czarnowicki, Helen Y He, Huei-Chi Wen, Peter W Hashim, John K Nia, Kunal Malik, Yeriel Estrada, Grace W Kimmel, Mark Taliercio, James G Krueger, Emma Guttman-Yassky
BACKGROUND: Characterizing blood profile of alopecia areata (AA) is not only important for treatment advancements, but also for possibly identifying peripheral biomarkers that will eliminate the need for scalp biopsies. We aimed to compare frequencies of skin homing (CLA(+) ) vs. systemic (CLA(-) ) "polar" CD4(+) and CD8(+) and activated T-cell subsets in AA vs. AD and control blood. METHODS: Flow cytometry was used to measure IFN-γ, IL-13, IL-9, IL-17, and IL-22 cytokines in CD4(+) and CD8(+) T-cells...
October 30, 2017: Allergy
https://www.readbyqxmd.com/read/29082595/cutaneous-reactive-hyperaemia-is-unaltered-by-dietary-nitrate-supplementation-in-healthy-humans
#14
Brett J Wong, Jeremy T Keen, Erica L Levitt
The purpose of this study was to determine whether nitrate supplementation augments cutaneous reactive hyperaemia. Seven participants were tested pre- and postnitrate supplementation (25 ml beetroot juice); participants consumed one shot per day for 3 days. Participants were instrumented with two microdialysis fibres: control (Ringer's solution) and NO synthase inhibition (20 mM L-NAME). Skin blood flow was measured via laser-Doppler flowmetry (LDF). A blood pressure cuff was placed on the experimental arm and inflated to 250 mmHg for 5 mins to occlude arterial inflow...
October 29, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29080196/nitric-oxide-signaling-molecules-in-acupoints-toward-mechanisms-of-acupuncture
#15
Sheng-Xing Ma
Recent clinical trial studies have demonstrated that the effects of acupuncture on pain improvement are small and no difference between acupoints and non-points. Whether acupuncture needles must be inserted in specific points depends on whether acupoint specificity exists that is still not resolved, and is now urgent. Previous anatomical studies have demonstrated that acupoints exist higher number of nerve fibers/trunks, blood vessels, hair follicles, and sweat glands as well as density of the gap junction...
November 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29079750/skin-dendritic-cell-and-t-cell-activation-associated-with-dengue-shock-syndrome
#16
Huynh Thi Le Duyen, Daniela Cerny, Dinh The Trung, Jassia Pang, Sumathy Velumani, Ying Xiu Toh, Phan Tu Qui, Nguyen Van Hao, Cameron Simmons, Muzlifah Haniffa, Bridget Wills, Katja Fink
The pathogenesis of severe dengue remains unclear, particularly the mechanisms underlying the plasma leakage that results in hypovolaemic shock in a small proportion of individuals. Maximal leakage occurs several days after peak viraemia implicating immunological pathways. Skin is a highly vascular organ and also an important site of immune reactions with a high density of dendritic cells (DCs), macrophages and T cells. We obtained skin biopsies and contemporaneous blood samples from patients within 24 hours of onset of dengue shock syndrome (DSS), and from healthy controls...
October 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29067143/a-proposed-neurologic-pathway-for-scalp-acupuncture-trigeminal-nerve-meninges-cerebrospinal-fluid-contacting-neurons-brain
#17
Shuya Wang, Kun Liu, Yuan Wang, Shuyou Wang, Xun He, Xiang Cui, Xinyan Gao, Bing Zhu
Objective: Scalp acupuncture is a somatic stimulation therapy that produces prominent clinical effects when used to treat cerebral diseases. However, this acupuncture's therapeutic mechanisms have not yet been well-addressed. Scalp acupoints are innervated by the trigeminal nerve, which is coincident with the intracranial sensory afferents as well as with the meningeal vessels. In recent years, cerebrospinal fluid-contacting neurons have been found and proved to transmit allergic substances between brain the parenchyma and meninges, representing a possible network between scalp acupuncture and the brain...
October 1, 2017: Medical Acupuncture
https://www.readbyqxmd.com/read/29060461/in-silico-investigation-of-the-effects-of-hemolysis-on-the-hyperspectral-absorptance-of-blood-in-motion
#18
Spencer R Van Leeuwen, Gladimir V G Baranoski, Bradley W Kimmel
Measurement of the optical absorptance of blood can provide insight into its composition and behaviour. Accordingly, optical devices and sensors are commonly used in a clinical setting to measure the absorptance of blood, either directly or indirectly through measurement of skin spectral responses. These measurements enable the evaluation or constant monitoring of a patient's blood. In this paper, we perform predictive simulations to investigate the absorptance of blood and how it is affected by hemolysis. These simulations are performed using a cell-based light interaction model, known as CLBlood, which accounts for the orientation and distribution of red blood cells...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29058556/feasibility-of-a-miniature-esophageal-heat-exchange-device-for-rapid-therapeutic-cooling-in-newborns-preliminary-investigations-in-a-piglet-model
#19
John Dingley, Satomi Okano, Silvia Planas, Elavazhagan Chakkarapani
Therapeutic hypothermia (TH) after neonatal encephalopathy, commonly provided by 72 hours of whole-body cooling using a wrap, limits parents' physical contact with their infants affecting bonding and may not be suitable for encephalopathic preterm infants with fragile skin. Alternative cooling methods are unavailable for this population. We investigated in a neonatal pig model the feasibility of achieving a 3.5°C reduction in rectal temperature (Trectal) similar to clinical TH protocols from 38.5°C (normothermia for pigs) to a target of 35°C ± 0...
October 23, 2017: Therapeutic Hypothermia and Temperature Management
https://www.readbyqxmd.com/read/29056167/skin-blood-flow-and-vascular-endothelium-function-in-uremia
#20
Miroslaw J Smogorzewski
Prevalence of dermatological disorder in patients with end-stage kidney disease is estimated as 50% to 100% in various studies. Some of the skin lesions are specific for the diseases causing chronic kidney disease (CKD), some are associated with CKD, and still others are the dermatological manifestation of uremia. Microangiopathy was also found in both arterioles and venule in the skin biopsy of "normal looking" skin in patients with end-stage kidney disease. In a cross-sectional study in patients on dialysis, we measured skin blood flow (SBF) using laser Doppler device in a standardized way at various areas of lower extremities at 2 different local skin temperatures: 35°C and 44°C...
November 2017: Journal of Renal Nutrition
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