Filtered By:
Specialty: Biology

This page shows you your search results in order of date. This is page number 12.

Order by Relevance | Date

Total 656 results found since Jan 2013.

Sex differences in the effects of the moon on ischemic stroke incidence: new findings from Beijing, China.
Abstract Stroke is a major cause of death and disability in China, and no therapies have proven effective to prevent it. Popular belief holds that the lunar cycle affects human physiology, behavior, and health. The aim of our study is to determine whether the lunar cycle impacts the incidence of stroke subtypes [intracerebral hemorrhage (ICH), transient ischemic attack (TIA) and ischemic stroke (IS)]. We retrospectively extracted the discharge registry data of all patients with first-ever acute stroke hospitalized in the affiliated hospital of Beijing University of Traditional Chinese Medicine during 2002-2015. Th...
Source: Chronobiology International - July 12, 2020 Category: Biology Authors: Wang RR, Hao Y, Chen J, Wang MQ, Zheng RY, Shi LS, He J Tags: Chronobiol Int Source Type: research

Short Takes
The National Institute of Neurological Disorders and Stroke (NINDS) of the National Institutes of Health (NIH) is soliciting public input on best practices and innovative ideas for education in the principles of rigorous research as well as promotion of rigorous research practices. Responses to this Request for Information (RFI) can be submitted online via this webform or via an email to RigorChampions@nih.gov by August 1, 2020. If submitting by email, please include the Notice number (NOT-NS-20-062) in the subject line. More information can be found at https://grants.nih.gov/grants/guide/notice-files/NOT-NS-20-062.html. ...
Source: Public Policy Reports - July 6, 2020 Category: Biology Authors: AIBS Source Type: news

Association between HindIII (rs320) variant in the lipoprotein lipase gene and the presence of coronary artery disease and stroke among the Saudi population
Publication date: Available online 24 June 2020Source: Saudi Journal of Biological SciencesAuthor(s): Neda M. Bogari, Ashwag Aljohani, Anas Dannoun, Osama Elkhateeb, Masimo Porqueddu, Amr A. Amin, Dema N. Bogari, Mohiuddin M. Taher, Faruk Buba, Reem M. Allam, Mustafa N. Bogari, Francesco Alamanni
Source: Saudi Journal of Biological Sciences - July 3, 2020 Category: Biology Source Type: research

How do hoverflies use their righting reflex? RESEARCH ARTICLE
Anna Verbe, Leandre P. Varennes, Jean-Louis Vercher, and Stephane Viollet When taking off from a sloping surface, flies have to reorient themselves dorsoventrally and stabilize their body by actively controlling their flapping wings. We have observed that righting is achieved solely by performing a rolling manoeuvre. How flies manage to do this has not yet been elucidated. It was observed here for the first time that hoverfly reorientation is entirely achieved within 6 wingbeats (48.8 ms) at angular roll velocities of up to 10x103 deg s–1 and that the onset of their head rotation consistently follows ...
Source: Journal of Experimental Biology - July 1, 2020 Category: Biology Authors: Verbe, A., Varennes, L. P., Vercher, J.-L., Viollet, S. Tags: RESEARCH ARTICLE Source Type: research

Androgens ’ effects on cerebrovascular function in health and disease
AbstractAndrogens affect the cerebral vasculature and may contribute to sex differences in cerebrovascular diseases. Men are at a greater risk for stroke and vascular contributions to cognitive impairment and dementia (VCID) compared to women throughout much of the lifespan. The cerebral vasculature is a target for direct androgen actions, as it expresses several sex steroid receptors and metabolizing enzymes. Androgens ’ actions on the cerebral vasculature are complex, as they have been shown to have both protective and detrimental effects, depending on factors such as age, dose, and disease state. When administered chr...
Source: Biology of Sex Differences - June 29, 2020 Category: Biology Source Type: research

A novel cylindrical overlap-and-fling mechanism used by sea butterflies RESEARCH ARTICLE
Ferhat Karakas, Amy E. Maas, and David W. Murphy The clap-and-fling mechanism is a well-studied, unsteady lift generation mechanism widely used by flying insects and is considered obligatory for tiny insects flying at low to intermediate Re. However, some aquatic zooplankters including some pteropod (i.e. sea butterfly) and heteropod species swimming at low to intermediate Re also use the clap-and-fling mechanism. These marine snails have extremely flexible, actively deformed, muscular wings which they flap reciprocally to create propulsive force, and these wings may enable novel lift generation mechanisms not available to...
Source: Journal of Experimental Biology - June 24, 2020 Category: Biology Authors: Karakas, F., Maas, A. E., Murphy, D. W. Tags: RESEARCH ARTICLE Source Type: research

Correlation between rs320 variant in the lipoprotein lipase gene and presence of coronary artery disease and stroke among the Saudi population
Publication date: Available online 24 June 2020Source: Saudi Journal of Biological SciencesAuthor(s): Neda M. Bogari, Ashwag Aljohani, Anas Dannoun, Osama Elkhateeb, Masimo Porqueddu, Amr A Amin, Dema N Bogari, Taher MM, Faruk Buba, Reem M. Allam, Mustafa N Bogari, Francesco Alamanni
Source: Saudi Journal of Biological Sciences - June 24, 2020 Category: Biology Source Type: research

Whale sharks increase swimming effort while filter feeding, but appear to maintain high foraging efficiencies RESEARCH ARTICLE
David E. Cade, J. Jacob Levenson, Robert Cooper, Rafael de la Parra, D. Harry Webb, and Alistair D. M. Dove Whale sharks (Rhincodon typus) – the largest extant fish species – reside in tropical environments, making them an exception to the general rule that animal size increases with latitude. How this largest fish thrives in tropical environments that promote high metabolism but support less robust zooplankton communities has not been sufficiently explained. We used open-source inertial measurement units (IMU) to log 397 h of whale shark behavior in Yucatán, Mexico, at a site of both active feedin...
Source: Journal of Experimental Biology - June 10, 2020 Category: Biology Authors: Cade, D. E., Levenson, J. J., Cooper, R., de la Parra, R., Webb, D. H., Dove, A. D. M. Tags: Comparative biomechanics of movement RESEARCH ARTICLE Source Type: research

How do hoverflies use their righting reflex? RESEARCH ARTICLE
Anna Verbe, Leandre P. Varennes, Jean-Louis Vercher, and Stephane Viollet When taking off from a sloping surface, flies have to reorient themselves dorsoventrally and stabilize their body by actively controlling their flapping wings. We have observed that the righting is achieved solely by performing a rolling manoeuvre. How flies manage to do this has not yet been elucidated. It was observed here for the first time that hoverflies’ reorientation is entirely achieved within 6 wingbeats (48.8ms) at angular roll velocities of up to 10x103 °/s and that the onset of their head rotation consistently follows that of th...
Source: Journal of Experimental Biology - June 10, 2020 Category: Biology Authors: Verbe, A., Varennes, L. P., Vercher, J.-L., Viollet, S. Tags: RESEARCH ARTICLE Source Type: research

Protecting the neuronal architecture
(University of Heidelberg) Protecting nerve cells from losing their characteristic extensions, the dendrites, can reduce brain damage after a stroke. Neurobiologists from Heidelberg University have demonstrated this by means of research on a mouse model. The team, led by Prof. Dr. Hilmar Bading in cooperation with Junior Professor Dr. Daniela Mauceri, is investigating the protection of neuronal architecture to develop new approaches to treating neurodegenerative diseases.
Source: EurekAlert! - Biology - June 5, 2020 Category: Biology Source Type: news

Serum Ceruloplasmin Is the Candidate Predictive Biomarker for Acute Aortic Dissection and Is Related to Thrombosed False Lumen: a Propensity Score-Matched Observational Case-Control Study.
Abstract Acute aortic dissection (AAD), one of the fatal diseases observed at the department of vascular surgery, is associated with a great mortality rate at the early stage. Ceruloplasmin (CP) is the plasma protein that functions as a copper transporter. The current retrospective research was carried out to assess CP contents and to examine the possible part in diagnosing patients with AAD. In addition, propensity score matching (PSM) was also utilized for reducing the bias in case screening as well as the clinical confounders. Using PSM, this study included 85 pairs of AAD cases (Stanford A and B dissection) an...
Source: Biological Trace Element Research - June 4, 2020 Category: Biology Authors: Ma C, Zhao H, Shi F, Li M, Liu X, Ji C, Han Y Tags: Biol Trace Elem Res Source Type: research

Blood flow recovers faster than brain in micro strokes
(Rice University) Work by a Rice neurobiologist shows that increased blood flow to the brain is not an accurate indicator of neuronal recovery after a microscopic stroke.
Source: EurekAlert! - Biology - May 22, 2020 Category: Biology Source Type: news

Therapeutic treatment with vitamin C reduces focal cerebral ischemia-induced brain infarction in rats by attenuating disruptions of blood brain barrier and cerebral neuronal apoptosis.
In this study we demonstrated that parenteral administration of vitamin C significantly improved neurological deficits and reduced brain infarction and brain edema by attenuating the transient middle cerebral artery occlusion (tMCAO)-induced nitrosative stress, inflammatory responses, and the resultant disruptions of blood brain barrier and cerebral neuronal apoptosis. These results suggest that parenteral administration of vitamin C has potential as an adjuvant agent with intravenous thrombolysis or endovascular thrombectomy in acute treatment of ischemic stroke. PMID: 32450129 [PubMed - as supplied by publisher]
Source: Free Radical Biology and Medicine - May 21, 2020 Category: Biology Authors: Chang CY, Chen JY, Wu MH, Hu ML Tags: Free Radic Biol Med Source Type: research

Whale sharks increase swimming effort while filter feeding, but appear to maintain high foraging efficiencies RESEARCH ARTICLE
David E. Cade, J. Jacob Levenson, Robert Cooper, Rafael de la Parra, D. Harry Webb, and Alistair D. M. Dove Whale sharks (Rhincodon typus Smith 1828) – the largest extant fish species – reside in tropical environments, making them an exception to the general rule that animal size increases with latitude. How this largest fish thrives in tropical environments that promote high metabolism but support less robust zooplankton communities has not been sufficiently explained. We used open-source inertial measurement units (IMU) to log 397 hours of whale shark behavior in Yucatan, Mexico, at a site of both active feed...
Source: Journal of Experimental Biology - May 3, 2020 Category: Biology Authors: Cade, D. E., Levenson, J. J., Cooper, R., de la Parra, R., Webb, D. H., Dove, A. D. M. Tags: RESEARCH ARTICLE Source Type: research

RNA chemist recognized with $11M 'proven trackrecord' award
(Scripps Research Institute) Scripps Research, Florida Chemistry Professor Matthew Disney, PhD, has been honored with a prestigious Research Program Award from the National Institute of Neurological Disorders and Stroke (NINDS), to aid Disney's development of treatments for incurable diseases such as Alzheimer's, Parkinson's, ALS and frontotemporal dementia.
Source: EurekAlert! - Biology - May 1, 2020 Category: Biology Source Type: news