Search Results
Results 451 - 500 of 1557
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Sandberg Margareta - - 2004
Acupuncture has become a widely used treatment modality in various musculoskeletal pain conditions. Acupuncture is also shown to enhance blood flow and recovery in surgical flaps. The mechanisms behind the effect on blood flow were suggested to rely on vasoactive substances, such as calcitonin gene-related peptide, released from nociceptors by ...
Estañol Bruno - - 2004
Skin blood vessels and sweat glands are both innervated by sympathetic C fibers. We investigated whether during diverse respiratory maneuvers the vasomotor responses (VRs) and the sympathetic skin responses (SSRs) were frequently or occasionally co-activated. We simultaneously recorded the amplitude of the vasomotor responses and the sympathetic skin responses, the ...
Mikasa H - - 2004
A 9-yr-old boy with an adrenal phaeochromocytoma underwent removal of the tumour under general anaesthesia using sevoflurane and nitrous oxide combined with thoracic epidural anaesthesia. Skin blood flow in the first toe, as measured by laser Doppler flowmetry, markedly decreased during manipulation of the tumour and increased after removal of ...
Yosipovitch Gil - - 2004
The skin is the organ that receives the greatest exposure to light and shows a high-amplitude circadian rhythm in epidermal cell proliferation. We have previously demonstrated that the skin barrier function has a significant circadian rhythm. Corticosteroids (CS) are the most commonly used topical treatment in dermatology. Time-dependent differences in ...
Drummond Peter D - - 2004
To investigate the effect of observation on blushing, an experimenter sat next to 28 participants and looked closely at one cheek while the participant sang (embarrassing) or read aloud (not embarrassing). Increases in cheek temperature were greater on the observed than the unobserved side during both tasks. Changes in cheek ...
Melhuish J M - - 2004
The microcirculation under compression bandages has been assessed by numerous methods; however, the measurement techniques can disrupt the bandage-skin interface, affecting the measurement. In this study, a non-invasive method for measuring cutaneous blood flow using laser Doppler flowmetry (LDF) is presented. Ten volunteers had their microcirculation assessed by a laser ...
Jay Ollie - - 2004
This study investigates the effect of blood flow upon the short-term (<180 s) skin contact cooling response in order to ascertain whether sufferers of circulatory disorders, such as the vasospastic disorder Raynaud's disease, are at a greater risk of cold injury than people with a normal rate of blood flow. ...
KarakaƟ Mehmet - - 2004
Unilateral nevoid telangiectasia is a cutaneous condition consisting of congenital or acquired patches of superficial telangiectases in a unilateral linear distribution. Unilateral nevoid telangiectasia has been associated with elevations of blood estrogen levels and/or an increased number of estrogen receptors in the involved skin. We present a hepatitis-B carrier case ...
Walters Thomas J - - 2004
We have previously reported species differences in the rate of skin heating in response to millimeter wavelength microwave exposure. We hypothesized that these differences were predominantly a function of species differences in the ability to increase skin blood flow during local heating. Mathematical modeling also suggested that, in humans, the ...
Ushiroyama Takahisa - - 2004
To investigate the clinical effects of EH0202, a Japanese herbal supplement, on the menopausal symptoms and physical status of peri- and post-menopausal women. Thirty-two post-menopausal women (53.0+/-5.1 years) presented with menopausal complaints were enrolled in the clinical study. Patients were administered an herbal supplement, EH0202 (6 g/day for 6 months), ...
Stücker M - - 2004
BACKGROUND: Cutaneous microcirculation shows a distinctive spatiotemporal inhomogeneity. Therefore provocation tests are necessary to receive significant and reproducible data. The present study investigated the effect of localized cutaneous vascular alteration, like in psoriasis vulgaris, on different parameters of reactive hyperemia (peak capillary blood cell velocity [pCBV], postocclusive reactive hyperemia [PRH%], ...
Pau Hans Wilhelm - - 2004
Healing and integration of a cochlear implant is largely influenced by good blood circulation in the covering skin, which, on the other hand, is closely correlated to skin temperature. Measuring superficial flap temperatures by thermography is an easy way to get some clues about the corresponding blood supply. These data ...
Brincat Mark P - - 2004
Oestrogen loss at the menopause has a profound influence on skin. Oestrogen treatment in post-menopausal women has repeatedly been shown to increase collagen content, dermal thickness and elasticity. Data on the effect of oestrogen on skin water content are also promising. Further, physiological studies on oestrogen and wound healing suggest ...
Kuo Tsun-Cheng - - 2004
The purpose of this study was to investigate the effect of the De-Qi sensations of acupuncture (sourness-distension and distension-numbness) stimulation. Fifty-two healthy medical student volunteers were given acupuncture at the Hoku (LI-4) acupoint as they were resting. During a test that lasted 30 minutes, their skin blood flow was measured ...
Zahn Sebastian - - 2004
In healthy volunteers, flare responses induced by norepinephrine (NE) iontophoresis have been observed. However, as NE iontophoresis is a combined electrical and chemical stimulus axon, reflexes cannot be directly linked to pharmocological activity of NE. Different concentrations of NE, clonidine (CL), and phenylephrine (PE) (NE: 10(-10)-10(-3) M; CL and PE: ...
van der Helm-van Mil Annette H M - - 2003
Melatonin has been attributed a role in a number of physiological processes. Changes in distal skin temperature and blood pressure after intake of melatonin suggest that melatonin induces peripheral vasodilation. The effect on the cerebral blood flow is still unknown. We examined the effect of a single pulse of melatonin ...
Saravanamuthu J - - 2003
The location of the vulva has had limited technologic progress in the assessment of the skin microcirculation and its application to clinical practice. Our group previously demonstrated increased perfusion in vulvar cancer compared to adjacent uninvolved skin with the laser Doppler flowmetry (LDF). The LDF is severely limited by its ...
Freccero Carolin - - 2003
The purpose of the study was to elucidate the vasodilatory response to local heating of the skin at two depths in two locations. To accomplish this, we measured skin blood flow in 12 healthy subjects using laser Doppler perfusion monitoring. A probe with two fibers separated 0.14 mm (superficial) and ...
Mayrovitz Harvey N - - 2003
Vulnerability of the heel to ulceration in bed-bound persons is related to direct pressure-induced blood flow decreases. Periodic pressure reduction is a clinical strategy to help prevent ulcers by allowing flow-repayment hyperaemia that has a magnitude and duration thought to be related to the duration of the prior interval of ...
Wainwright P R - - 2003
Of the biological effects of human exposure to radiofrequency and microwave radiation, the best-established are those due to elevation of tissue temperature. To prevent harmful levels of heating, restrictions have been proposed on the specific absorption rate (SAR). However, the relationship between SAR and temperature rise is not an invariant, ...
Litscher Gerhard - - 2003
This study comprises scientific-theoretic fundamental investigations of laserneedle technology, a new and painless method of acupuncture stimulation. Laserneedles are not inserted in the skin, but are merely placed on the surface of the acupuncture point. The study documents the significant changes in peripheral microcirculation (p = 0.005) and surface temperature ...
Yosipovitch G - - 2003
BACKGROUND: Accumulating data have shown evidence of involvement of cutaneous nerve fibres and neuropeptides in psoriasis. Although ample evidence of structural and biochemical data exist no studies have been done on assessing the function of small nerve fibres in this disease. OBJECTIVES: To investigate the function of small nerve fibres ...
Sumikura H - - 2003
Intradermal injection of capsaicin induces a region of visual flare (neurogenic inflammation) and regions with modality specific hyperalgesia. Their temporal and spatial profiles have been studied to elucidate the mechanism behind neurogenic inflammation and hyperalgesia. Until today, the flare response has mainly been quantified by visual inspection. However, recent developments ...
Zhou Wei - - 2003
TCM holds that acute lymphangitis is pathogenically caused by the accumulated internal fire and toxicity, and the external skin injury-induced infection, leading to toxicity going upward along the meridians. The treatment should be given to clear away heat and toxin. Blood letting by a three-edged needle may promote qi and ...
Drummond P D - - 2003
OBJECTIVE: To investigate whether the introduction of methadone into the skin of the human forearm produces wheals, cutaneous vasodilatation or thermal hyperalgesia and, if so, to determine whether these responses are mediated by opioid receptors. SUBJECTS: Healthy adults. METHODS AND RESULTS: In Experiment 1 (N = 11), the increase in ...
Tsukahara Kazue - - 2003
We evaluated the association between the cutaneous blood flow and the three-dimensional morphology of the skin by measuring various aspects of blood flow (resting blood flow, mean blood flow during cooling, minimum blood flow during cooling, mean blood flow after cooling, and maximum blood flow after cooling) of the cheeks ...
Dereure Olivier - - 2003
Little information is currently available regarding post-treatment outcome of TCR-targeted PCR in skin and/or peripheral blood in patients with Mycosis Fungoides (MF) when a dominant gene rearrangement is present at time of diagnosis. To address this matter, a study evaluating the correlations between post-treatment clinical, histological, blood and skin PCR ...
Hashimoto Masaaki - - 2004
To investigate the effects of carbon dioxide (CO2) hot spring baths on physiological functions, head-out immersion of urethane-anesthetized, fursheared male Wistar rats was performed. Animals were immersed in water (30 or 35 degrees C) with high-CO2 content ( approximately 1,000 parts/million; CO2-water). CO2-water for bathing was made by using an ...
Jakasa I - - 2004
OBJECTIVES: To study the influence of the presence of water on the dermal absorption of 2-butoxyethanol (BE) in volunteers. METHODS: Six male volunteers were dermally exposed to 50%, 90% or neat w/w BE for 4 h on the volar forearm over an area of 40 cm(2). An inhalation exposure with ...
Messamore Erik - - 2003
Niacin dilates cutaneous blood vessels, resulting in a pronounced skin flush in most people. The flush response to niacin is attenuated in schizophrenia, but the quantification and physiological mechanism of this abnormality have not been described in detail. It is not clear whether the mechanism involves changes in the pharmacological ...
House C M - - 2003
This study was conducted to examine whether toe skin blood flow (Q(toe)) could be maintained in subjects exposed to cold air by warming the foot using a heated sock. Four male subjects were exposed to air at 4 degrees C. They wore aramid shirt and trousers, a coverall made from ...
Yamashita Kazuaki - - 2003
This study examined effects of hyperoxia on thermoregulatory responses. Eight healthy male students (23.5+/-1.8 yrs) were involved in this study. They immersed their legs in a hot water bath (42 degrees C) for 60 minutes in a climate chamber. The conditions of oxygen concentration of a chamber were set at ...
Sandberg Margareta - - 2003
In 14 healthy female subjects, the effects of needle stimulation (acupuncture) on skin and muscle blood flow were investigated using a non-invasive custom-designed probe and photoplethysmography (PPG). In randomised order, 2-7 days apart, three modes of needle stimulation were performed on the anterior aspect of the tibia: superficial insertion (SF), ...
Zuzak Karel J - - 2003
Sickle cell disease is characterized by microvascular occlusion and hemolytic anemia, factors that impair tissue oxygen delivery. We use visible reflectance hyperspectral imaging to quantitate skin tissue hemoglobin oxygen saturation (HbO2) and to determine whether changes in blood flow during nitric oxide (NO) stimulation or gas administration (therapies proposed for ...
Toyokawa Hideyoshi - - 2003
The biological effects of far-infrared ray (FIR) on whole organisms remain poorly understood. The aim of our study was to investigate not only the hyperthermic effect of the FIR irradiation, but also the biological effects of FIR on wound healing. To evaluate the effect of FIR on a skin wound ...
Edvinsson L I - - 2003
AIM: Vasogen's immune modulation therapy (IMT)* involves the ex vivo exposure of a sample of autologous blood to 3 oxidative stress factors (heat, an oxidative environment, and ultraviolet light), followed by intramuscular re-injection. The primary objective of this study was to assess the effect of Vasogen's IMT on skin blood ...
Tunnell James W - - 2003
BACKGROUND: Increasing radiant exposure offers a means to increase treatment efficacy during laser-mediated treatment of vascular lesions, such as port-wine stains; however, excessive radiant exposure decreases selective vascular injury due to increased heat generation within the epidermis and collateral damage to perivascular collagen. OBJECTIVE: To determine if cryogen spray cooling ...
Domoki Ferenc - - 2003
The neural mechanisms of reactive cutaneous hyperaemia were studied by using a novel experimental approach: the simultaneous measurement of cutaneous blood flow by laser-Doppler flowmetry in adjacent innervated and chemodenervated skin regions of the rat hindpaw served by the same artery. Transient occlusion of the femoral artery (0.5-6 min) resulted ...
Nelson D A - - 2003
This study reports measurements of the skin surface temperature elevations during localized irradiation (94 GHz) of three species: rat (irradiated on lower abdomen), rhesus monkey (posterior forelimb), and human (posterior forearm). Two exposure conditions were examined: prolonged, low power density microwaves (LPM) and short-term, high power density microwaves (HPM). Temperature ...
Hirsch Jan - - 2003
BACKGROUND: Localized overheating of packed red blood cells (PRBCs) after microwave warming with consequent damage to erythrocytes has been reported. We therefore compared possible cellular markers of erythrocyte damage, as measured by flow cytometry, with laboratory indicators of hemolysis to evaluate the effects of microwave warming on PRBCs. METHODS: PRBC ...
Kellogg D L DL - - 2003
To examine the role of nitric oxide (NO) in cutaneous active vasodilation, we measured the NO concentration from skin before and during whole body heat stress in nine healthy subjects. A forearm site was instrumented with a NO-selective, amperometric electrode and an adjacent intradermal microdialysis probe. Skin blood flow (SkBF) ...
Charkoudian Nisha N Department of Anesthesiology, Mayo Clinic, Rochester, Minn 55905, USA. - - 2003
The thermoregulatory control of human skin blood flow is vital to the maintenance of normal body temperatures during challenges to thermal homeostasis. Sympathetic neural control of skin blood flow includes the noradrenergic vasoconstrictor system and a sympathetic active vasodilator system, the latter of which is responsible for 80% to 90% ...
Leslie Stephen J - - 2003
OBJECTIVE: To determine the reproducibility of laser Doppler flowmetry coupled with intra-dermal saline delivery. METHODS: Delivery of saline was judged visually by two operators ( n=100), using a graduated syringe (Becton-Dickinson), by expelling saline onto a weighing boat. Volume was assessed by weight. Skin blood flow following intra-dermal injection of ...
Nagashima Yoshinao - - 2003
An integration-type laser-Doppler flowmeter, equipped with a temperature-load instrument, for measuring skin blood flow (ILD-T), and analytical parameters developed in a previous study were used to compare changes in the skin blood flow in the forehead and cheek in elderly subjects (in their 60s and 70s) with those in younger ...
Uitto Olivia D - - 2003
PURPOSE: To determine the pathways and origin of electroosmotic flow in human skin. METHODS: Iontophoretic transport of acetaminophen in full thickness human cadaver skin was visualized and quantified by scanning electrochemical microscopy. Electroosmotic flow in the shunt pathways of full thickness skin was compared to flow in the pores of ...
Wilder-Smith Einar P V - - 2003
The underlying mechanism of the water-immersion skin wrinkling test, which is used as a test of sympathetic nerve function, remains elusive. We investigated changes of blood circulation in the hand occurring with water-immersion wrinkling by measuring the velocity of ulnar and digital artery blood flow, and of digit skin blood ...
Mavropoulos Antonios - - 2003
BACKGROUND AND AIM: Cigarette smoking is currently considered as a risk factor for periodontal disease. Controversy exists as to whether the vasoconstrictive property of nicotine is one of the pathogenic mechanisms. To this end we tested the hypothesis that cigarette smoking is causing vasoconstriction in the healthy human gingiva. MATERIALS ...
Kuehl B L - - 2003
Skin cleansers may be an important adjunct to the regimen of those who use cosmetics, have sensitive or compromised skin, or utilize topical therapies. Cleansers emulsify dirt, oil and microorganisms on the skin surface so that they can be easily removed. During cleansing, there is a complex interaction between the ...
Ishida Hitoshi - - 2003
The effects of five levels of population density on various organs, the neuroendocrine system, skin function, skin blood perfusion, and blood parameters were studied in the hairless mouse. Skin barrier recovery was evaluated by measuring transepidermal water loss after tape stripping. Blood perfusion was measured by means of a laser ...
Puchala R - - 2003
It is suspected that prolactin may affect mohair growth; therefore, effects of infusing prolactin on mohair growth were investigated using a skin perfusion technique. Seven Angora wethers (average body weight, 30 +/- 3 kg) were implanted bilaterally with silicon catheters into the superficial branches of the deep circumflex iliac artery ...
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