Are Permanent Residents of High Altitude Fully Adapted to Their Hypoxic Environment?

abstract：:Although thousands of people ascend 4205 m to visit the summit of Mauna Kea each year, there has been no information on the rate of altitude illness triggered by such visits. Two surveys were used: one for tourists driving up to the summit and the other for summit astronomy workers staying at lodging facilities at int...

journal_title：High altitude medicine & biology

authors： Onopa J,Haley A,Yeow ME

更新日期：2007-10-01 00:00:00

abstract：UNLABELLED:Chronic hypoxia increases dependence on glucose in men and increases insulin sensitivity in men and women. Cyclic Variations in Altitude Conditioning (CVAC) is a novel technology that provides exposure to rapidly fluctuating cyclic hypobaric hypoxia (CHH). PURPOSE:To test the hypothesis that markers of gluc...

journal_title：High altitude medicine & biology

authors： Marquez JL,Rubinstein S,Fattor JA,Shah O,Hoffman AR,Friedlander AL

更新日期：2013-09-01 00:00:00

abstract：:Hamm, Wolfgang, Sari Kassem, Lukas von Stülpnagel, Florian Maier, Mathias Klemm, Dominik Schüttler, Felix Grabher, Ludwig T. Weckbach, Bruno C. Huber, Axel Bauer, Konstantinos D. Rizas, and Stefan Brunner. Deceleration capacity and periodic repolarization dynamics as predictors of acute mountain sickness. High Alt Med...

journal_title：High altitude medicine & biology

authors： Hamm W,Kassem S,von Stülpnagel L,Maier F,Klemm M,Schüttler D,Grabher F,Weckbach LT,Huber BC,Bauer A,Rizas KD,Brunner S

更新日期：2020-12-01 00:00:00

abstract：:Otero, Liliana, Patricia Hidalgo, Rafael González, and Carlos A. Morillo. Association of cardiovascular disease and sleep apnea at different altitudes. High Alt Med Biol. 17:336-341, 2016.-We evaluated the prevalence of sleep apnea (SA) in patients with cardiovascular disease (CVD) at different altitudes. A total of 3...

journal_title：High altitude medicine & biology

authors： Otero L,Hidalgo P,González R,Morillo CA

更新日期：2016-12-01 00:00:00

abstract：:Acute mountain sickness (AMS) is a common and disabling condition that occurs in healthy individuals ascending to high altitude. Based on the ability of iron to influence cellular oxygen sensing pathways, we hypothesized that iron supplementation would protect against AMS. To examine this hypothesis, 24 healthy sea-le...

journal_title：High altitude medicine & biology

authors： Talbot NP,Smith TG,Privat C,Nickol AH,Rivera-Ch M,León-Velarde F,Dorrington KL,Robbins PA

更新日期：2011-10-01 00:00:00

abstract：:High altitude training is a widely used strategy for improving aerobic exercise performance. Both Rhodiola crenulata (R) and Cordyceps sinensis (C) supplements have been reported to improve exercise performance. However, it is not clear whether the provision of R and C during high altitude training could further enhan...

journal_title：High altitude medicine & biology

authors： Chen CY,Hou CW,Bernard JR,Chen CC,Hung TC,Cheng LL,Liao YH,Kuo CH

更新日期：2014-09-01 00:00:00

abstract：:A variety of neurological disorders other than high altitude cerebral edema have been described at high altitude. This report documents isolated facial and hypoglossal nerve palsies that occurred in two travellers at high altitude in the Nepal Himalaya. The possible pathophysiological mechanisms of these neurological ...

journal_title：High altitude medicine & biology

authors： Basnyat B

更新日期：2001-07-01 00:00:00

abstract：: Background: Perfusion of intrapulmonary arteriovenous anastomoses (IPAVA) is increased during exercise and in hypoxia and is associated with variations in oxygen saturation (SPO2), resulting in blood bypassing the pulmonary microcirculation. Sildenafil is a pulmonary vasod...

journal_title：High altitude medicine & biology

authors： Carter EA,Koch S,O'Donovan JP,Sheel AW,Milsom WK,Koehle MS

更新日期：2019-12-01 00:00:00

abstract：:Given the high inter-individual variability in the sensitivity to high altitude, we hypothesize the presence of underlying genetic factors. The aim of this study was to construct a genetic predisposition score based on previously identified high-altitude gene variants to explain the inter-individual variation in the r...

journal_title：High altitude medicine & biology

authors： Masschelein E,Puype J,Broos S,Van Thienen R,Deldicque L,Lambrechts D,Hespel P,Thomis M

更新日期：2015-03-01 00:00:00

abstract：:Chronic hypoxia has a profound effect on uterine artery adaptation to pregnancy. The present studies tested the hypothesis that pregnant kinase C (PKC) differentially regulates alpha(1)-adrenoceptor-mediated contractions and Ca(2+) sensitivity in the uterine arteries of nonpregnant and pregnant sheep acclimatized to h...

journal_title：High altitude medicine & biology

authors： Xiao D,Huang X,Longo LD,Zhang L

更新日期：2010-07-01 00:00:00

abstract：:Allergies and adverse reactions to sulfonamide medications are quite common. Two distinct categories of drugs are classified as sulfonamides: antibiotics and nonantibiotics. The two groups differ in their chemical structure, use, and the rate at which adverse reactions occur. Cross-reactivity between the two groups ha...

journal_title：High altitude medicine & biology

authors： Kelly TE,Hackett PH

更新日期：2010-01-01 00:00:00

abstract：:The present study compares the changes in ventilation in response to sustained hypobaric hypoxia and acute normobaric hypoxia between subjects susceptible to high altitude pulmonary edema (HAPE-S) and control subjects (C-S). Seven HAPE-S and five C-S were exposed to simulated high altitude of 4000 m for 23 h in a hypo...

journal_title：High altitude medicine & biology

authors： Schirlo C,Pavlicek V,Jacomet A,Gibbs JS,Koller E,Oelz O,Seebauer M,Kohl J

更新日期：2002-10-01 00:00:00

abstract：:The aims of the present study were to measure the satiety neuropeptide cholecystokinin (CCK) in humans at terrestrial high altitude to investigate its possible role in the pathophysiology of anorexia, cachexia, and acute mountain sickness (AMS). Nineteen male mountaineers aged 38 +/- 12 years participated in a 20 +/- ...

journal_title：High altitude medicine & biology

authors： Bailey DM,Davies B,Milledge JS,Richards M,Williams SR,Jordinson M,Calam J

更新日期：2000-04-01 00:00:00

abstract：:Hypoxia can be defined as a reduction in available oxygen, whether in a whole organism or in a tissue or cell. It is a real life cause of pulmonary hypertension in humans both in terms of patients with chronic hypoxic lung disease and people living at high altitude. The effect of hypoxia on the pulmonary vasculature c...

journal_title：High altitude medicine & biology

authors： Welsh DJ,Peacock AJ

更新日期：2013-06-01 00:00:00

abstract：:The development of mining activities in North Chile involves a great number of workers intermittently exposed to high altitude for a long period of time (chronic intermittent hypoxia, CIH). A 2(1/2)-year prospective study aimed to characterize this model of exposure to CIH and to know whether this condition may progre...

journal_title：High altitude medicine & biology

authors： Richalet JP,Donoso MV,Jiménez D,Antezana AM,Hudson C,Cortès G,Osorio J,Leòn A

更新日期：2002-07-01 00:00:00

abstract：: Background: Hypobaric hypoxia (HH) increases the risk of high altitude-related illnesses (HARI). The pathophysiological mechanism(s) involved are still partially unknown. Altered vascular reactivity as consequence of endothelial dysfunction during HH might play a role in t...

journal_title：High altitude medicine & biology

authors： Grittani M,Pellegrino G,Conte S,Morello A,Autore A,Cimmino G,Trimarco B,Morgagni F,Cirillo P

更新日期：2019-06-01 00:00:00

abstract：:In hypobaric hypoxia (HH) at high altitude, the immune responses are changed probably due to oxidative stress-induced production of free radicals and nonradicals. Vitamin E is an antioxidant and protects the cells from oxidative damage. The present study was carried out to study the antioxidant role of vitamin E on th...

journal_title：High altitude medicine & biology

authors： Goswami AR,Ghosh T

更新日期：2019-03-01 00:00:00

abstract：:The Swiss expedition to Everest (altitude 8,848 m) in the spring of 1952 very nearly attained the summit with two of the climbers reaching 8,595 m. This would have been the first ascent of Everest. One main reason for failure was the inadequate oxygen equipment which was modified from sets designed for mine rescue usi...

journal_title：High altitude medicine & biology

authors： West JB

更新日期：2003-04-01 00:00:00

abstract：:Ultrasonography is a noninvasive, reliable, repeatable, and inexpensive technology that has dramatically changed the practice of medicine. The clinical use of portable ultrasound devices has grown tremendously over the last 10 years in the fields of intensive care, emergency medicine, and anesthesiology. In this revie...

journal_title：High altitude medicine & biology

authors： Canepa CA,Harris NS

更新日期：2019-06-01 00:00:00

abstract：BACKGROUND:Abnormally high pulmonary artery pressure (PAP) in hypoxia due to exaggerated hypoxic pulmonary vasoconstriction (HPV) is a key factor for development of high-altitude pulmonary edema (HAPE). It was shown that about 10% of a healthy Caucasian population has an exaggerated HPV that is comparable to the respon...

journal_title：High altitude medicine & biology

authors： Dehnert C,Mereles D,Greiner S,Albers D,Scheurlen F,Zügel S,Böhm T,Vock P,Maggiorini M,Grünig E,Bärtsch P

更新日期：2015-03-01 00:00:00

abstract：:The efficacy and safety of intermittent hypoxia training (IHT) were investigated in healthy, 60- to 74-yr-old men. Fourteen men (Gr 1) who routinely exercised daily for 20 to 30 min were compared with 21 (Gr 2) who avoided exercise. Their submaximal work-load power values before the IHT training were 94 +/- 3.7 and 66...

journal_title：High altitude medicine & biology

authors： Shatilo VB,Korkushko OV,Ischuk VA,Downey HF,Serebrovskaya TV

更新日期：2008-04-01 00:00:00

abstract：:We describe the case of a 38-year-old man who presented with bilateral retinal detachments following a trek in Tibet during which time he took acetazolamide for prophylaxis of acute mountain sickness (AMS). This is the first time that retinal detachment has been described following a sojourn to high altitude. Acetazol...

journal_title：High altitude medicine & biology

authors： Morris DS,Severn PS,Smith J,Somner JE,Stannard KP,Cottrell DG

更新日期：2007-01-01 00:00:00

abstract：:The phosphodiesterase-5 inhibitor sildenafil has been reported to improve hypoxic exercise capacity, but the mechanisms accounting for this observation remain incompletely understood. Sixteen healthy subjects were included in a randomized, double-blind, placebo-controlled, cross-over study on the effects of 50-mg sild...

journal_title：High altitude medicine & biology

authors： Faoro V,Lamotte M,Deboeck G,Pavelescu A,Huez S,Guenard H,Martinot JB,Naeije R

更新日期：2007-07-01 00:00:00

abstract：:Transient focal neurological deficits have been described in sojourners to high altitude. We present two cases of transient expressive aphasia in well-acclimatized high altitude climbers. We speculate that this type of transient focal neurological impairment may represent migraine aura, and we discuss other reports of...

journal_title：High altitude medicine & biology

authors： Dietz TE,McKiel VH

更新日期：2000-10-01 00:00:00

abstract：: Background: Platelets are the key factor in primary hemostasis. It has been shown that chronic altitude exposure increases platelets' aggregability. Nevertheless, data about acute effects and the underlying mechanisms are sparse. Methods: ...

journal_title：High altitude medicine & biology

authors： Lackermair K,Schuhmann CG,Mertsch P,Götschke J,Milger K,Brunner S

更新日期：2019-09-01 00:00:00

abstract：:Neurological disturbances may be present at high altitude independently of high altitude cerebral edema. We report here the case of a patient who experienced for the first time generalized seizures after spending a night at an altitude of 5200 m, with no preceding symptoms of acute mountain sickness. An initial CT sca...

journal_title：High altitude medicine & biology

authors： Daleau P,Morgado DC,Iriarte CA,Desbiens R

更新日期：2006-04-01 00:00:00

abstract：: Background: Sex-based differences in metabolism and morphological characteristics may result in unique exercise responses during periods of limited oxygen availability. Purpose: To evaluate the effects of moderate normobaric hy...

journal_title：High altitude medicine & biology

authors： Starling-Smith TM,La Monica MB,Stout JR,Fukuda DH

更新日期：2020-03-01 00:00:00

abstract：:The effects of exposure to acute and chronic high altitude hypoxia on the activity and expression of CYP2E1 and CYP3A1 were examined in rats. Rats were divided into low altitude (LA, 400 m), acute moderate altitude hypoxia (AMH, 2800 m), chronic moderate altitude hypoxia (CMH, 2800 m), acute high altitude hypoxia (AHH...

journal_title：High altitude medicine & biology

authors： Li X,Wang X,Li Y,Zhu J,Su X,Yao X,Fan X,Duan Y

更新日期：2014-12-01 00:00:00

abstract：:High altitude-induced gastrointestinal (GI) problems are potentially life-threatening. GI tract bleeding and inflammation are the major problems induced by hypobaric hypoxia (HH). In this study, effects of acute exposure to HH up to 14 days at 7620 m on GI immune function have been studied. To fulfill these objectives...

journal_title：High altitude medicine & biology

authors： Khanna K,Mishra KP,Chanda S,Eslavath MR,Ganju L,Kumar B,Singh SB

更新日期：2019-03-01 00:00:00

abstract：:A 36-year-old woman with no medical history participated in a trekking in Ladakh up to 5300 m of altitude. She was well acclimatized and presented no previous sign of acute mountain sickness, high altitude pulmonary edema or high altitude cerebral edema. After an intense effort to catch up with her group, she became b...

journal_title：High altitude medicine & biology

authors： Richalet JP,Larmignat P,Poignard P

更新日期：2020-03-01 00:00:00