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Dataset results
622 results for “High altitude”
Genome-wide DNA methylation analysis of driver genes in blood of high-altitude pulmonary edema
GEO Series GSE268584. Homo sapiens. 12 samples. Type: Methylation profiling by genome tiling array.
Transcriptomic analysis of iPSC-derived endothelium reveals adaptations to high altitude hypoxia in energy metabolism and inflammation
GEO Series GSE280017. Homo sapiens. 10 samples. Type: Expression profiling by high throughput sequencing.
Comparative analysis of the microRNA transcriptome revealed high altitude adaptation in yak (Bos grunniens)
GEO Series GSE87833. Bos taurus; Bos grunniens. 11 samples. Type: Non-coding RNA profiling by high throughput sequencing.
W23 and High altitude maize under solar and supplementary UV-B
GEO Series GSE2163. Zea mays. 12 samples. Type: Expression profiling by array.
National High Altitude Photography
The National High Altitude Photography (NHAP) program, which was operated from 1980 - 1989, was coordinated by the U.S. Geological Survey as an interagency project to eliminate duplicate photography in various Government programs. The aim of the program was to cover the 48 conterminous states of the USA over a 5-year span. In the NHAP program, black-and-white and color-infrared aerial photographs were obtained on 9-inch film from an altitude of 40,000 feet above mean terrain elevation and are centered over USGS 7.5-minute quadrangles. The color-infrared photographs are at a scale of 1:58,000 (1 inch equals about .9 miles) and the black-and-white photographs are at a scale of 1:80,000 (1 inch equals about 1.26 miles).
High Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) IMPACTS V1
The High Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) IMPACTS dataset consists of Equivalent reflectivity factor, Doppler velocity, Doppler velocity spectrum width, Linear Depolarization Ratio (LDR), Ocean normalized radar cross section, Co-polarization signal-to-noise mask estimates collected by the HIWRAP onboard the NASA ER-2 aircraft during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. IMPACTS was a three-year sequence of winter season deployments conducted to study snowstorms over the U.S. Atlantic coast. IMPACTS aimed to (1) Provide observations critical to understanding the mechanisms of snowband formation, organization, and evolution; (2) Examine how the microphysical characteristics and likely growth mechanisms of snow particles vary across snowbands; and (3) Improve snowfall remote sensing interpretation and modeling to significantly advance prediction capabilities. These data are available from January 25 through February 27, 2020 in HDF-5 format.
Exploring the mechanisms of high-altitude adaptation in yak based on single-cell transcriptome atlas.
GEO Series GSE266061. Bos taurus; Bos grunniens x Bos taurus; Bos grunniens. 9 samples. Type: Expression profiling by high throughput sequencing.
High altitude disease in yearling beef cattle
GEO Series GSE164320. Bos taurus. 12 samples. Type: Expression profiling by high throughput sequencing.
Transcriptome signature of local native cattle of Ladakh region from high altitude and Sahiwal cattle from low altitude (sea level).
GEO Series GSE116800. Bos taurus. 11 samples. Type: Expression profiling by array.
Revealing the mechanism of high altitude adaptation in poikilotherm: an intraspecific comparative transcriptomic analysis in a toad-headed lizard, Phrynocephalus vlangalii
GEO Series GSE75992. Phrynocephalus vlangalii. 2 samples. Type: Expression profiling by high throughput sequencing.
Gene Expression Profiling of High Altitude Polycythemia in Han Chinese migrated to Qinghai-Tibetan Plateau
GEO Series GSE29977. Homo sapiens. 10 samples. Type: Expression profiling by array.
Peripheral blood mononuclear cell (PBMC) gene expression in healthy adults rapidly transported to high altitude
GEO Series GSE46480. Homo sapiens. 196 samples. Type: Expression profiling by array.
Expression Profiles in Low- and High-Altitude Individuals
GEO Series GSE135109. Homo sapiens. 8 samples. Type: Expression profiling by array.
Different Erythrocyte MicroRNA Profiles in Low- and High-Altitude Individuals
GEO Series GSE117436. Homo sapiens. 3 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Dataset related to the article "A Breathtaking Lift: Sex and Body Mass Index Differences in Cardiopulmonary Response in a Large Cohort of Unselected Subjects with Acute Exposure to High Altitude" 2021
<p><strong><em>Background:</em></strong> Every year, thousands of people travel to high altitude and experience hypoxemia. At high altitude, the partial pressure of oxygen decreases. The aim of this observational study was to determine if there is a relationship between anthropometric features and basic cardiorespiratory variables, including oxygen saturation (SpO<sub>2</sub>), heart rate (HR), and blood pressure (BP), following acute exposure to high altitude. <strong><em>Materials and Methods:</em></strong> At the 3,466 m top of a cableway station, we installed an automated system for measuring peripheral SpO<sub>2</sub>, HR, BP, height, weight, and body mass index (BMI). <strong><em>Results:</em></strong> Between January and October 2020, out of 4,874 volunteers (age 39.9 ± 15.4 years, male 54.4%), 3,267 provided complete data (1,808 cases during winter and 1,459 during summer). SpO<sub>2</sub> was 86.8% ± 6.8%. At multivariable analysis, SpO<sub>2</sub> was significantly associated with age, sex, season, BMI, and HR but not with BP. We identified 391 (12%) subjects with SpO<sub>2</sub> ≤80%: they were older, with a higher BMI and HR but without sex or BP differences. Finally, winter season was associated with greater frequency of SpO<sub>2</sub> ≤80% (13.3% vs. 10.3%, <em>p</em> = 0.008). <strong><em>Conclusion:</em></strong> Our data show that high BMI, older age, and male sex were associated with greater degrees of hypoxemia following exposure to high altitude, particularly during the winter.</p>
Heart Rate Variability from Wearable Photoplethysmography Systems: Implications in Sleep Studies at High Altitude (dataset)
<p>public anonymized dataset of the main findings of the study</p> <p>Abstract:</p> <p>The interest in photoplethysmography (PPG) for sleep monitoring is increasing because PPG may allow assessing the heart rate variability (HRV), which is particularly important in breathing disorders. Thus, we aim to evaluate how PPG wearable systems measure HRV during sleep at high altitudes, where hypobaric hypoxia induces respiratory disturbances. We considered PPG and electrocardiographic recordings in 21 volunteers sleeping at 4554m asl (as a model of sleep breathing disorder), and 5 alpine guides sleeping at sea level, 6000m and 6800m asl. Power spectra, multiscale entropy, and self-similarity were calculated for PPG tachograms and electrocardiography R-R intervals (RRI). Results demonstrated that wearable PPG devices provide HRV measures even at extremely high altitudes. However, the comparison between PPG tachograms and RRI showed discrepancies in the faster spectral components and at the shorter scales of self-similarity and entropy (TABLE 1). Furthermore, the changes in sleep HRV from sea level to extremely high altitudes quantified by RRI and PPG tachograms in the 5 alpine guides tended to be different at the faster frequencies and shorter scales (TABLE 2). Discrepancies may be explained by modulations of pulse wave velocity and should be considered to interpret correctly autonomic alterations during sleep from HRV analysis.</p>
A collection of UAV photographs from a high altitude of the Palace of Knossos
<p>This is a collection of photographs from a high altitude from the Palace of Knossos. This dataset was used for the photogrammetric digitization of the archaeological site.</p>
Gene expression between high and low altitude Mus musculus domesticus
GEO Series GSE29097. Mus musculus domesticus; Mus musculus. 18 samples. Type: Expression profiling by array.
Haemodynamic Adaptive Mechanisms at High Altitude: Comparison between European Lowlanders and Nepalese Highlanders.
<p>Background: Exposure to high altitudes determines several adaptive mechanisms affecting in a complex way the whole cardiovascular, respiratory, endocrine systems because of the hypobaric hypoxic condition. The aim of our study was to evaluate the circulatory adaptive mechanisms at high altitudes, during a scientific expedition in the Himalayas. Methods: Arterial distensibility was assessed measuring carotid-radial and carotid-femoral pulse wave velocity. Tests were carried out at several altitudes, from 1350 to 5050 m above sea level, on 8 lowlander European researchers and 11 highlander Nepalese porters. Results: In Europeans, systolic blood pressure and pulse pressure increased slightly but significantly with altitude (p < 0.05 and p < 0.001, respectively). Norepinephrine showed a significant increase after the lowlanders had spent some time at high altitude (p < 0.001). With increasing altitude, a progressive increase in carotid-radial and carotid- femoral pulse wave velocity values was observed in lowlanders, showing a particularly significant increase (p < 0.001) after staying at high altitude (carotid-radial pulse wave velocity, median value (interquartile range) from 9.2 (7.9–10.0) to 11.2 (10.9–11.8) m/s and carotid-femoral pulse wave velocity from 8.5 (7.9–9.0) to 11.3 (10.9–11.8) m/s). At high altitudes (3400 and 5050 m above sea level), no significant differences were observed between highlanders and lowlanders in hemodynamic parameters (blood pressure, carotid-radial and carotid-femoral pulse wave velocity). Conclusions: The progressive arterial stiffening with altitude observed in European lowlanders could explain the increase in systolic and pulse pressure values observed at high altitudes in this ethnic group. Further studies are needed to evaluate the role of aortic stiffening in the pathogenesis of acute mountain sickness.</p>
Seasonal variation in dorsal skin reflectance and thermic rates along an elevation gradient in a high-altitude montane lizard
<p>Data generated for the article: "Seasonal variation in dorsal skin reflectance and thermic rates along an elevation gradient in a high-altitude montane lizard".</p> <p>The file contains the following variables by altitude and season in the lizard Sceloporus grammicus:</p> <p>--Body mass<br> --SVL<br> --Back reflectance<br> --Heating rate<br> --Cooling rate<br> --Thermal lapse</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.