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Peer Reviewed Scientific Research Reports.
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1. A case of alpha-thalassemia-2 associated with pulmonary infarction.
Match Strength: 4.930
Pulmonary infarction is an entity of medical significance that develops concurrently in beta-thalassemia but not in alpha-thalassemia. The reason for this difference is yet to be elucidated. We have evaluated a 21-year-old male alpha-thalassemia-2 patient who had profound microcytic anemia and pulmonary infarction. Analysis of the alpha-globin gene revealed -alpha3.7/alpha alpha genotype. His mother also had the same heterozygous gene deletion, though she had neither anemia nor pulmonary infarction. Since the patient had no other predisposition to pulmonary infarction, it is suggested that ... Read More »
» Published in Lung. 2006 Jul-Aug;184(4):223-7.
2. Sequence and function of canine herpesvirus alpha-transinducing factor and its interaction with an immediate early promoter.
Match Strength: 4.478
The sequence of the alpha-transinducing factor (alpha-TIF) of canine herpesvirus (CHV-l) was determined. Alignment of the predicted CHV-1 alpha-TIF amino acid sequence with other alpha-TIF homologues reveals a core region of similarity with divergent amino and carboxyl termini. Analysis of the CHV-1 infected cell protein 4 promoter region identified a region containing nine copies of a 52 bp repeat that showed significant up-regulation of transcription by alpha-TIF. This region contained an imperfect 'TAATGARAT' motif, the binding site for herpes simplex virus 1 alpha-TIF, with an imperfect ... Read More »
» Published in Virus Genes. 2006 Dec;33(3):299-307.
3. A newly identified deletion of 970 bp at the alpha-globin locus that removes the promoter region of the alpha1 gene.
Match Strength: 4.358
The most common causes of alpha-thalassemia (thal) are deletions that remove a part, or one or both of the functional alpha-globin genes. These deletions cause diminished expression of the alpha-globin protein, which may result in relatively low hemoglobin (Hb) and/or mean corpuscular volume (MCV) values. We here report the identification of a 970 bp deletion in the alpha1-globin gene that encompasses the entire promoter region of the alpha1-globin gene and 26 bp encoding the 5' end of the mRNA. Thus, the affected alpha1-globin gene is prone to be nonfunctional. We therefore nominated the ... Read More »
» Published in Hemoglobin. 2006;30(4):471-7.
4. Synthesis of spacer-containing chlamydial disaccharides as analogues of the alpha-Kdop-(2-->8)-alpha-Kdop-(2-->4)-alpha-Kdop trisaccharide epitope.
Match Strength: 4.354
On the basis of high-resolution crystal structures of the antigen binding fragment of the chlamydia-specific monoclonal antibody S25-2 in complex with the trisaccharide alpha-Kdop-(2-->8)-alpha-Kdop-(2-->4)-alpha-Kdop and part structures thereof, seven modified alpha-Kdop-(2-->8)-alpha-Kdop disaccharide derivatives were synthesized starting from the protected disaccharide allyl ketoside 1. Hydroboration and subsequent oxidation as well as ozonolysis, respectively, followed by Wittig-reaction for chain elongation were used to install a terminal carboxylic group on spacer entities of ... Read More »
» Published in Carbohydr Res. 2007 Feb 26;342(3-4):576-85. Epub 2006 Sep 27.
5. Nuclear localization signal and protein context both mediate importin alpha specificity of nuclear import substrates.
Match Strength: 4.210
The "classical" nuclear protein import pathway depends on importin alpha and importin beta. Importin alpha binds nuclear localization signal (NLS)-bearing proteins and functions as an adapter to access the importin beta-dependent import pathway. In humans, only one importin beta is known to interact with importin alpha, while six alpha importins have been described. Various experimental approaches provided evidence that several substrates are transported specifically by particular alpha importins. Whether the NLS is sufficient to mediate importin alpha specificity is unclear. To address this ... Read More »
» Published in Mol Cell Biol. 2006 Dec;26(23):8697-709. Epub 2006 Sep 25.
6. Natural vitamin E alpha-tocotrienol: retention in vital organs in response to long-term oral supplementation and withdrawal.
Match Strength: 4.180
The natural vitamin E tocotrienol (TCT) possesses biological properties not shared by tocopherols (TCP). Nanomolar alpha-TCT, not alpha-TCP, is potently neuroprotective (JBC 275:13049; 278:43508; Stroke 36:2258). The report that the affinity of TTP to bind (alpha-TCT is an order of magnitude lower than that for alpha-TCP questions the bioavailability of orally taken TCT to tissues. Oral supplementation of TCT for 3 years in nine generations of female and male rat was studied. Ten vital organs were examined. To gain insight into the turnover of alpha-TCT in tissues, a subset of supplemented ... Read More »
» Published in Free Radic Res. 2006 Jul;40(7):763-71.
7. In vitro effect of zearalenone and alpha-zearalenol on boar sperm characteristics and acrosome reaction.
Match Strength: 4.163
This study was conducted to determine the in vitro effects of three different concentrations (125, 187.5 and 250 microM in diluted semen) of zearalenone (zen) and alpha-zearalenol (alpha-zen) on boar sperm. Semen parameters such as motility, viability and spontaneous acrosome reaction were evaluated. From the results it was shown that both zen and alpha-zen affected the sperm characteristics significantly (p < 0.05), except for alpha-zen at the low concentration which did not decrease the percentage of live reacted spermatozoa significantly. In conclusion, zen and alpha-zen are directly ... Read More »
» Published in Reprod Domest Anim. 2006 Oct;41(5):394-401.
8. Type I interferons attenuate T cell activating functions of human mast cells by decreasing TNF-alpha production and OX40 ligand expression while increasing IL-10 production.
Match Strength: 4.127
Recent studies have demonstrated that mast cells not only mediate inflammatory reactions in type I allergy but also play an important role in adaptive immunity. In the present study, we investigated the effects of interferon-alpha, which shares the same receptor as IFN-beta, on human cord blood-derived mast cells. Mast cells produced TNF-alpha, and IL-10, and expressed OX40 ligand upon activation by crosslinking of FcepsilonRI. When treated with interferon-alpha, TNF-alpha production was decreased while IL-10 and TGF-beta productions were increased. Furthermore, flow cytometric analysis ... Read More »
» Published in J Clin Immunol. 2006 Nov;26(6):512-8. Epub 2006 Sep 19.
9. Staphylococcal alpha-toxin causes increased tracheal epithelial permeability.
Match Strength: 4.124
Staphylococcus aureus is an important cause of pulmonary infections. The role of S. aureus alpha-toxin as a virulence factor is unclear. We hypothesized that airway epithelium is a target of S. aureus alpha-toxin and that exposure of airway epithelium to alpha-toxin results in damage to the airway epithelium. To examine the hypothesis that alpha-toxin is capable of independently producing airway epithelium damage as measured by permeability and morphometry, an isolated whole mouse trachea test apparatus was developed. In vitro epithelial permeability (P) was calculated and digital micrographs ... Read More »
» Published in Pediatr Pulmonol. 2006 Dec;41(12):1146-52.
10. Uveal melanocytes do not respond to or express receptors for alpha-melanocyte-stimulating hormone.
Match Strength: 4.116
PURPOSE: Whereas cutaneous pigmentation increases after exposure to ultraviolet (UV) irradiation, ocular pigmentation does not. This study was designed to examine the evidence that alpha-melanocyte-stimulating hormone (alpha-MSH), which is thought to be the mediator of UV response in the skin, has any role to play in uveal melanocytes. METHODS: Human uveal melanocytes derived from the choroid and the iris were cultivated by using eyes harvested from adult cadaveric donors and were assessed by Northern blot analysis for growth and melanogenic response to alpha-MSH and expression of the receptor ... Read More »
» Published in Invest Ophthalmol Vis Sci. 2006 Oct;47(10):4507-12.
11. Protein kinase C activation inhibits Cav1.3 calcium channel at NH2-terminal serine 81 phosphorylation site.
Match Strength: 4.066
The Ca(v)1.3 (alpha(1D)) variant of L-type Ca(2+) channels plays a vital role in the function of neuroendocrine and cardiovascular systems. In this article, we report on the molecular and functional basis of alpha(1D) Ca(2+) channel modulation by protein kinase C (PKC). Specifically, we show that the serine 81 (S81) phosphorylation site at the NH(2)-terminal region plays a critical role in alpha(1D) Ca(2+) channel modulation by PKC. The introduction of a negatively charged residue at position 81, by converting serine to aspartate, mimicked the PKC phosphorylation effect on alpha(1D) Ca(2+) ... Read More »
» Published in Am J Physiol Heart Circ Physiol. 2006 Oct;291(4):H1614-22.
12. Nanomechanical force measurements of gliadin protein interactions.
Match Strength: 4.060
The strength and nature of interactions between monomeric gliadin proteins involving alpha-alpha, omega-omega, and alpha-omega interactions in 0.01M acetic acid, and the effect of urea has been investigated. It was shown by means of nanomechanical force measurements that the stretching events in the separation curve after adhesive phenomena originated from proteins. These stretching events displayed different responses of the alpha- and omega-gliadins to urea. While 2M urea caused the more globular alpha-gliadins to unfold, the beta-turn-rich omega-gliadins remained fairly stable even in 8M ... Read More »
» Published in Biopolymers. 2006 Dec 15;83(6):658-67.
13. Sensitization of coronary alpha-adrenoceptor vasoconstriction in the prediabetic metabolic syndrome.
Match Strength: 4.059
OBJECTIVE: This study tested whether alpha -adrenoceptor-mediated coronary vasoconstriction is augmented in the metabolic syndrome and is accompanied by the alteration of specific alpha(1)- and alpha(2)-coronary adrenoceptors. METHODS: Studies were conducted in control and chronically high-fat-fed (6 weeks of 60% calories from fat) dogs with metabolic syndrome. Alterations in coronary alpha(1B)-, alpha(1D)-, and alpha(2A)-adrenoceptor mRNA and protein expression were examined by real-time PCR and Western analyses, respectively. Coronary blood flow and its response to intracoronary infusion of ... Read More »
» Published in Microcirculation. 2006 Oct-Nov;13(7):587-95.
14. Evidence for the immunostimulatory effects of low-dose orally delivered human IFN-alpha in cattle.
Match Strength: 4.023
Orally delivered interferon-alpha (IFN-alpha) has been associated with systemic protection against various disorders in humans and animals. In an attempt to understand how IFN-alpha delivers a systemic signal following its local oral administration, the present study aimed at identifying genes differentially regulated in bovine peripheral blood through the use of cDNA microarrays following oral therapy with IFN-alpha. We identified thousands of genes to be IFN-alpha regulated. Of these, about 8.5% had a minimum 4-fold degree of change, the majority of which represented novel IFN-stimulated ... Read More »
» Published in J Interferon Cytokine Res. 2006 Sep;26(9):675-81.
15. alpha-Blockers for Treatment of the Prostatitis Syndromes.
Match Strength: 4.019
The prostatitis syndromes are among the most common and frustrating clinical challenges for urologists in outpatient practice. Available treatment, especially for the chronic prostatitis syndromes, is poor, with no standard therapy producing significant cure rates. alpha-Blocker therapy has been advocated (with various levels of evidence) as a treatment modality for all categories of the prostatitis syndromes. This article reviews the evidence supporting the use of alpha-blocker therapy in patients with prostatitis. Further trials of longer duration, perhaps employing combination therapies, ... Read More »
» Published in Rev Urol. 2005;7 Suppl 8:S18-25.
16. Intracellular binding of fukutin and alpha-dystroglycan: relation to glycosylation of alpha-dystroglycan.
Match Strength: 3.968
The functions of fukutin, a gene product responsible for Fukuyama type congenital muscular dystrophy, still remain unclear, although a relation to the glycosylation of alpha-dystroglycan is presumed. To investigate the functions of fukutin, immunohistochemistry, examination using cultured astrocytes, enzyme-linked immunosorbent assay (ELISA)-based binding assay and immunoprecipitation were performed using control muscle and central nervous system tissues. Immunohistochemistry showed that alpha-dystroglycan and fukutin were co-expressed, especially in the glial cytoplasm and glia limitans of ... Read More »
» Published in Neurosci Res. 2006 Dec;56(4):391-9. Epub 2006 Sep 26.
17. Novel highly biodegradable biphasic tricalcium phosphates composed of alpha-tricalcium phosphate and beta-tricalcium phosphate.
Match Strength: 3.923
Novel biodegradable biphasic tricalcium phosphates (BTCP) composed of alpha-tricalcium phosphate (alpha-TCP) and beta-tricalcium phosphate (beta-TCP) were successfully synthesized by heating amorphous calcium phosphate precursors with different structures at 800 degrees C for 3h. The ratio of alpha-TCP and beta-TCP in the calcium phosphate particle can be controlled by aging time and pH value during synthesis of the amorphous precursor ... Read More »
» Published in Acta Biomater. 2006 Sep 14;
18. Tumor necrosis factor-alpha genetic predisposing factors can influence clinical severity in nephropathia epidemica.
Match Strength: 3.839
Severe human infection with Hantavirus is characterized by high fever, cold chills, thrombocytopenia, arterial hypotension, acute renal failure, and/or adult respiratory distress syndrome (ARDS)-like pulmonary involvement, but the clinical course varies greatly between individuals. We investigated whether genetically determined differences in tumor necrosis factor (TNF)-alpha production can influence the severity of Hantavirus disease. We studied a TNF-alpha single-nucleotide promoter polymorphism (SNP) at position -238 (a guanine [G]-to-adenine [A] transition) and ex vivo TNF-alpha production ... Read More »
» Published in Viral Immunol. 2006 Summer;19(3):558-64.
19. Alpha-toxin interferes with integrin-mediated adhesion and internalization of Staphylococcus aureus by epithelial cells.
Match Strength: 3.836
Staphylococcus aureus is an important human and animal pathogen. During infection, this bacterium is able to attach to and enter host cells by using its cell surface-associated factors to bind to the host's extracellular matrix (ECM) proteins. In this study, we determined that a protein exported by S. aureus, alpha-toxin, can interfere with the integrin-mediated adhesion and internalization of S. aureus by human lung epithelial cells (A549). The downregulation of alpha-toxin production significantly increased bacterial adhesion and invasion into the epithelial cells. In contrast, bacterial ... Read More »
» Published in Cell Microbiol. 2006 Oct;8(10):1656-68.
20. Parkinson's disease genetic mutations increase cell susceptibility to stress: Mutant alpha-synuclein enhances H(2)O(2)- and Sin-1-induced cell death.
Match Strength: 3.816
Parkinson's disease (PD) is a progressive neurodegenerative movement disorder characterized by selective loss of dopaminergic neurons and the presence of Lewy bodies. alpha-Synuclein is a major component of Lewy bodies in sporadic PD, and genetic alterations in alpha-synuclein cause autosomal-dominant hereditary PD. The pathogenesis of PD remains incompletely understood, but it appears to involve both genetic susceptibility and environmental factors. Here we investigated the effect of alpha-synuclein expression on cell susceptibility to proteasome inhibition, oxidative and nitrative stresses ... Read More »
» Published in Neurobiol Aging. 2006 Sep 13;
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