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83 results for “impairment”

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Research ArticleOpen accessIn the abstractCognitive-Enhancing and Antioxidant Activities of Quercetin Liposomes in Animal Model of Alzheimer's DiseaseTerdthai Tong-un, Panakaporn Wannanon, Jintanaporn Wattanathorn, Wathita PhachonpaiProblem statement: Recent findings demonstrated the crucial role of oxidative stress on the pathophysiology of Alzheimer’s Disease (AD). Antioxidant intake is beneficial to delay or inhibit the progression of this disease. Quercetin, a bioflavonoid in fruits and vegetables, has a powerful antioxidant activity both in vitro and in vivo. Claims that quercetin has many biological activities. However, quercetin is rapidly … …OnLine Journal of Biological Sciences, Vol. 10, Issue 2 · 31 Oct 2010 · 7,884 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Crude Oil and Spent Oil on Clarias garipinus: A Typical Marine FishA. M. Gbadebo, A. M. Taiwo, O. B. OlaProblem statement: Petroleum hydrocarbon and petroleum residue (i.e., spent oil) remains the foremost pollutants to the fish communities in various aquatic media-ponds, streams, rivers, creeks, coastal and marine environments through indiscriminate disposal of oil contaminated drilling muds, cutting and oil spillages. Approach: Also, the spent oil enters into aquatic media through run-off following unguided disposal. Both the petroleum hydrocarbon and … …American Journal of Environmental Sciences, Vol. 5, Issue 6 · 31 Dec 2009 · 7,470 accessesView PDFCite
Research ArticleOpen accessIn the abstractNovel Approach to Determine the Effects of MS Environment using the Portable GPS Receiver with Built-in AntennaWan Azlan Wan Zainal Abidin, Kiyotaka Fujisaki, Mitsuo TateibaCommunication impairment on the Mobile Satellite (MS) path for non-geostationary satellite is mainly due to effect of multipath and shadowing. In order to study the signal quality received by the MS user, a receiver system that has similar characteristics to the actual receiver used by the MS user should be used. This study presents a novel approach to determine the … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,580 accessesView PDFCite
Research ArticleOpen accessIn the abstractRetinoids and Opioids: Factors in the Development of HIV-Related Neurological DiseaseWalter Royal, III, Joseph L. BryantNeurological disease occurs frequently in HIV-infected individuals and may occur at even higher rates among infected drug users. Among the potential mechanisms that promote such impairment, retinoid deficiency may have selective effects that could both lead to alterations in immune function and enhanced replication of HIV. Studies are currently underway to examine the possible selective effects of retinoid receptor activation … …American Journal of Infectious Diseases, Vol. 4, Issue 2 · 30 Jun 2008 · 6,768 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvidence of Mitochondrial Dysfunction in Autism and Implications for TreatmentDaniel A. Rossignol, J. Jeffrey BradstreetClassical mitochondrial diseases occur in a subset of individuals with autism and are usually caused by genetic anomalies or mitochondrial respiratory pathway deficits. However, in many cases of autism, there is evidence of mitochondrial dysfunction (MtD) without the classic features associated with mitochondrial disease. MtD appears to be more common in autism and presents with less severe signs and symptoms. … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 2 · 30 Jun 2008 · 16,389 accessesView PDFCite
Research ArticleOpen accessIn the abstractMitochondrial Energy-Deficient Endophenotype in AutismJ. Jay Gargus, Faiqa ImtiazWhile evidence points to a multigenic etiology of most autism, the pathophysiology of the disorder has yet to be defined and the underlying genes and biochemical pathways they subserve remain unknown. Autism is considered to be influenced by a combination of various genetic, environmental and immunological factors; more recently, evidence has suggested that increased vulnerability to oxidative stress may be … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 2 · 30 Jun 2008 · 11,518 accessesView PDFCite
Research ArticleOpen accessIn the abstractHIV-1 Infection and Central Monoamine NeurotransmittersAdarsh M. Kumar, J. B. Fernandez, Irina Borodowsky et al.Human immunodeficiency virus type 1 (HIV-1) enters the central nervous system (CNS) shortly after infection and gets localized in different brain regions, leading to various types of neuropathological problems. It has been hypothesized that HIV-1 infection mediated neuropathogenesis may also adversely affect the activity of the central monoamine neurotransmitters systems, such as dopamine (DA), and 5-hydroxytryptamine (5-HT, serotonin), resulting in … …American Journal of Infectious Diseases, Vol. 3, Issue 4 · 31 Dec 2007 · 7,493 accessesView PDFCite
Research ArticleOpen accessIn the abstractRelation between Autoimmunity Chronic Urticaria and the Levels of Plasma Prothrombin F1+2Liu Xiaoming, Sheng Wanxiang, Ahmad T. Khalaf et al.A number of recent epidemiologic and experimental studies have enhanced our knowledge of the etiology and pathogenesis of chronic urticaria (CU), a disease that imposes profound impairment on patient's quality of life. Our study was performed to explore the relation between autoimmunity (CU) and the levels of plasma prothrombin F1+2. Thirty four (CU) patients with positive autologous serum skin test … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 6,900 accessesView PDFCite
Research ArticleOpen accessIn the abstractStress and Job Satisfaction among Air Force Military PilotsKhodabakhsh Ahmadi, Kolivand AlirezaStress induces impairment of performance is a relatively common issue in pilots of military aviation. The present study aimed at gathering preliminary data on the relationship between stress and job satisfaction among military pilots, so determine to what extent military pilots suffering from job satisfaction. This study was cross- sectional in design and used survey methodology. The survey was offered … …Journal of Social Sciences, Vol. 3, Issue 3 · 30 Sep 2007 · 10,963 accessesView PDFCite
Research ArticleOpen accessIn the abstractRainfall Attenuation and Rainfall Rate Measurements in Malaysia Comparison with Prediction ModelsMandeep Singh Jit Singh, Syed Idris Syed Hassan, Mohd Fadzil AinAttenuation due to rain is a primary cause of communication impairment on satellite-earth paths, especially above 10GHz. Rainfall is a serious source of attenuation at such a frequency. This paper presents the characteristics of rain distribution in USM based on measured one minute rain rate. For attenuation of rain, predictions models like ITU and VIHT (Variable Isotherm Height Technique) model … …American Journal of Applied Sciences, Vol. 4, Issue 1 · 30 Apr 2007 · 6,939 accessesView PDFCite