Dream Pharmaceuticals Pharmacy Online: Buspar





References online: prion





Triphasil Online |







J Gen Virol. 2002 Oct;83(Pt 10):2607-16.
PrP(Sc) accumulation in placentas of ewes exposed to natural scrapie: influence of foetal PrP genotype and effect on ewe-to-lamb transmission.

Andreoletti O, Lacroux C, Chabert A, Monnereau L, Tabouret G, Lantier F, Berthon P, Eychenne F, Lafond-Benestad S, Elsen JM, Schelcher F.

UMR 959 INRA-ENVT, Physiopathologie Infectieuse et Parasitaire des Ruminants, Ecole Nationale Veterinaire, 23 Chemin des Capelles, 31076 Toulouse Cedex 3, France. o.andreolettnvt.fr

Placentas from scrapie-affected ewes are known to be infectious. Nevertheless, placenta infectivity in such ewes is not systematic. Maternal transmission to lambs is highly suspected but contamination of the foetus in utero has not been demonstrated. Using ewes from a naturally scrapie-infected flock, it was demonstrated that abnormal prion protein (PrP(Sc)) accumulation in the placenta (i) is controlled by polymorphisms at codons 136, 154 and 171 of the foetal PrP gene and (ii) is restricted mainly to placentome foetal trophoblastic cells. In order to go deeper into the role of the placenta in scrapie transmission, the pattern of PrP(Sc) dissemination was established in susceptible lambs (genotype VRQ/VRQ) sampled from 140 days post-insemination to the age of 4 months from either VRQ/VRQ ewes with PrP(Sc)-positive placentas or ARR/VRQ ewes with PrP(Sc)-negative placentas. In both VRQ/VRQ lamb groups, PrP(Sc) spatial and temporal accumulation patterns were similar, suggesting post-natal rather than in utero contamination.


PMID:_12237445



J Biol Chem. 2003 Mar 14;278(11):8888-96. Epub 2002 Dec 13.
The PrP-like protein Doppel binds copper.

Qin K, Coomaraswamy J, Mastrangelo P, Yang Y, Lugowski S, Petromilli C, Prusiner SB, Fraser PE, Goldberg JM, Chakrabartty A, Westaway D.

Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Ontario M5S 3H2, Canada.

Doppel (Dpl) is a glycosylphosphatidylinositol-anchored protein expressed in the testis. It exhibits 26% sequence identity with the prion protein (PrP) but lacks the octarepeat region implicated as the major copper-binding domain. Contrary to expectations, Cu(II) induced a 26% reduction in the intrinsic fluorescence of Dpl(27-154) and a calculated K(d) for a single-site model of 0.16 +/- 0.08 microm. Other metals had minimal effects on fluorescence quenching. Matrix-assisted laser desorption ionization mass spectrometry of a Dpl peptide revealed binding of copper (but not other metals) to the helical alphaB/B'-loop-alphaC subregion of Dpl. Fluorescence quenching and equilibrium dialysis analyses of this Dpl(101-145) peptide were compatible with a binding site of K(d) = 0.4 microm. Diethylpyrocarbonate footprinting (Qin, K., Yang, Y., Mastrangelo, P., and Westaway, D. (2002) J. Biol. Chem. 277, 1981-1990) of Dpl(27-154) defined one residue/molecule was protected by copper from diethylpyrocarbonate adduct formation, and reiteration of this analysis with Dpl(101-145) suggested that His(131) may contribute to Cu(II) binding. Taken together, our data indicate that the alpha-helical region of mouse Dpl possesses a selective copper-binding site with a submicromolar K(d) and perhaps one or more lower affinity sites. Although metallated forms of Dpl might exist in vivo, analyses of Tg(Dpl)10329 mice were inconsistent with reports that Dpl expression is associated with increased carbonylation and nitrosylation of brain proteins. Thus, rather than comprising an important source of free radical damage, copper binding may serve to modulate the activity, stability, or localization of the Dpl protein.


PMID:_12482851



J Gen Virol. 2002 Oct;83(Pt 10):2617-28.
PrP(CWD) lymphoid cell targets in early and advanced chronic wasting disease of mule deer.

Sigurdson CJ, Barillas-Mury C, Miller MW, Oesch B, van Keulen LJ, Langeveld JP, Hoover EA.

Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1671, USA.

Up to 15% of free-ranging mule deer in northeastern Colorado and southeastern Wyoming, USA, are afflicted with a prion disease, or transmissible spongiform encephalopathy (TSE), known as chronic wasting disease (CWD). CWD is similar to a subset of TSEs including scrapie and variant Creutzfeldt-Jakob disease in which the abnormal prion protein isoform, PrP(CWD), accumulates in lymphoid tissue. Experimental scrapie studies have indicated that this early lymphoid phase is an important constituent of prion replication interposed between mucosal entry and central nervous system accumulation. To identify the lymphoid target cells associated with PrP(CWD), we used triple-label immunofluorescence and high-resolution confocal microscopy on tonsils from naturally infected deer in advanced disease. We detected PrP(CWD) primarily extracellularly in association with follicular dendritic and B cell membranes as determined by frequent co-localization with antibodies against membrane bound immunoglobulin and CD21. There was minimal co-localization with cytoplasmic labels for follicular dendritic cells (FDC). This finding could indicate FDC capture of PrP(CWD), potentially in association with immunoglobulin or complement, or PrP(C) conversion on FDC. In addition, scattered tingible body macrophages in the germinal centre contained coarse intracytoplasmic aggregates of PrP(CWD), reflecting either phagocytosis of PrP(CWD) on FDC processes, apoptotic FDC or B cells, or actual PrP(CWD) replication within tingible body macrophages. To compare lymphoid cell targets in early and advanced disease, we also examined: (i) PrP(CWD) distribution in lymphoid cells of fawns within 3 months of oral CWD exposure and (ii) tonsil biopsies from preclinical deer with naturally acquired CWD. These studies revealed that the early lymphoid cellular distribution of PrP(CWD) was similar to that in advanced disease, i.e. in a pattern suggesting FDC association. We conclude that in deer, PrP(CWD) accumulates primarily extracellularly and associated with FDCs and possibly B cells - a finding which raises questions as to the cells responsible for pathological prion production.


PMID:_12237446



Protein Sci. 2002 Oct;11(10):2335-50.
Molecular dynamics simulations of alanine rich beta-sheet oligomers: Insight into amyloid formation.

Ma B, Nussinov R.

Laboratory of Experimental and Computational Biology, National Cancer Institute at Frederick, Maryland 21702, USA.

The aggregation observed in protein conformational diseases is the outcome of significant new beta-sheet structure not present in the native state. Peptide model systems have been useful in studies of fibril aggregate formation. Experimentally, it was found that a short peptide AGAAAAGA is one of the most highly amyloidogenic peptides. This peptide corresponds to the Syrian hamster prion protein (ShPrP) residues 113-120. The peptide was observed to be conserved in all species for which the PrP sequence has been determined. We have simulated the stabilities of oligomeric AGAAAAGA and AAAAAAAA (A8) by molecular dynamic simulations. Oligomers of both AGAAAAGA and AAAAAAAA were found to be stable when the size is 6 to 8 (hexamer to octamer). Subsequent simulation of an additional alpha-helical AAAAAAAA placed on the A8-octamer surface has revealed molecular events related to conformational change and oligomer growth. Our study addresses both the minimal oligomeric size of an aggregate seed and the mechanism of seed growth. Our simulations of the prion-derived 8-residue amyloidogenic peptide and its variant have indicated that an octamer is stable enough to be a seed and that the driving force for stabilization is the hydrophobic effect.


PMID:_12237456

  • Prion Research Literature arch. 100 online
  • Prion Research Literature arch. 101 online
  • Prion Research Literature arch. 102 online
  • Prion Research Literature arch. 103 online
  • Prion Research Literature arch. 104 online
  • Prion Research Literature arch. 105 online
  • Prion Research Literature arch. 106 online
  • Prion Research Literature arch. 107 online
  • Prion Research Literature arch. 108 online
  • Prion Research Literature arch. 109 online
  • Prion Research Literature arch. 10 online
  • Prion Research Literature arch. 11 online
  • Prion Research Literature arch. 12 online
  • Prion Research Literature arch. 13 online
  • Prion Research Literature arch. 14 online
  • Prion Research Literature arch. 15 online
  • Prion Research Literature arch. 16 online
  • Prion Research Literature arch. 1 online
  • Prion Research Literature arch. 31 online
  • Prion Research Literature arch. 32 online
  • Prion Research Literature arch. 33 online
  • Prion Research Literature arch. 34 online
  • Prion Research Literature arch. 35 online
  • Prion Research Literature arch. 36 online
  • Prion Research Literature arch. 37 online
  • Prion Research Literature arch. 38 online
  • Prion Research Literature arch. 39 online
  • Prion Research Literature arch. 40 online
  • Prion Research Literature arch. 41 online
  • Prion Research Literature arch. 42 online
  • Prion Research Literature arch. 43 online
  • Prion Research Literature arch. 44 online
  • Prion Research Literature arch. 45 online
  • Prion Research Literature arch. 46 online
  • Prion Research Literature arch. 47 online
  • Prion Research Literature arch. 48 online
  • Prion Research Literature arch. 49 online
  • Prion Research Literature arch. 4 online
  • Prion Research Literature arch. 50 online
  • Prion Research Literature arch. 51 online
  • Prion Research Literature arch. 52 online
  • Prion Research Literature arch. 53 online
  • Prion Research Literature arch. 54 online
  • Prion Research Literature arch. 55 online
  • Prion Research Literature arch. 56 online
  • Prion Research Literature arch. 57 online
  • Prion Research Literature arch. 58 online
  • Prion Research Literature arch. 59 online
  • Prion Research Literature arch. 5 online
  • Prion Research Literature arch. 60 online
  • Prion Research Literature arch. 61 online
  • Prion Research Literature arch. 62 online
  • Prion Research Literature arch. 63 online
  • Prion Research Literature arch. 64 online
  • Prion Research Literature arch. 65 online
  • Prion Research Literature arch. 66 online
  • Prion Research Literature arch. 67 online
  • Prion Research Literature arch. 68 online
  • Prion Research Literature arch. 69 online
  • Prion Research Literature arch. 6 online
  • Prion Research Literature arch. 70 online
  • Prion Research Literature arch. 71 online
  • Prion Research Literature arch. 72 online
  • Prion Research Literature arch. 73 online
  • Prion Research Literature arch. 74 online
  • Prion Research Literature arch. 75 online
  • Prion Research Literature arch. 76 online
  • Prion Research Literature arch. 77 online
  • Prion Research Literature arch. 78 online
  • Prion Research Literature arch. 79 online
  • Prion Research Literature arch. 7 online
  • Prion Research Literature arch. 80 online
  • Prion Research Literature arch. 81 online
  • Prion Research Literature arch. 82 online
  • Prion Research Literature arch. 83 online
  • Prion Research Literature arch. 84 online
  • Prion Research Literature arch. 85 online
  • Prion Research Literature arch. 86 online
  • Prion Research Literature arch. 87 online
  • Prion Research Literature arch. 88 online
  • Prion Research Literature arch. 89 online
  • Prion Research Literature arch. 8 online
  • Prion Research Literature arch. 90 online
  • Prion Research Literature arch. 91 online
  • Prion Research Literature arch. 92 online
  • Prion Research Literature arch. 93 online
  • Prion Research Literature arch. 94 online
  • Prion Research Literature arch. 95 online
  • Prion Research Literature arch. 96 online
  • Prion Research Literature arch. 97 online
  • Prion Research Literature arch. 98 online
  • Prion Research Literature arch. 99 online
  • Prion Research Literature arch. 9 online






    The most ostensive feature that distinguishes us human from chimps and other primates is the lack of bodily hair. During evolutionary process, we have lost the majority of hair. Hair is no longer an essential part of our body, just like appendix. What little hair we still have on our scalp and a few other bodily parts is still regarded as significant for reasons other than biological necessity. Hair loss is naturally accompanied by aging process, although the extent of hair loss and the timing of onset vary widely among individuals. Thus, loss of hair and baldness is considered as a symbol of maturity or old age. Like winkles and other signs of aging, hair loss is not welcome by most people, because we don't welcome signs of aging, and being perceived as an aging person. However, it is alopecia, or premature hair loss that especially concerns certain people.

    While the hair loss and resulting baldness in general have not been proven to be related to underlying health problems, there are certain correlations between hair loss and health problems. For instance, premature hair loss could suggest premature aging or nutritional and hormonal imbalances, stressful life, use of drugs that cause hair loss as a side effect, skin disease, or heart disease. The balding appearance could also impart a subdued impression of integrity in bodily health and youthfulness. Fortunately, in many cases, hair loss is reversible by change in lifestyle and/or nutritional supplementation. Herbal hair growth formula and other nutritional supplements have been shown to be effective in warding off hair loss and resuming hair growth. Certain prescription drugs such as Propecia may also reverse hair loss by blocking the formation of DHT, a hormonal byproduct produced inceasingly as a person age.

    Hair Million is a blend of Asian herbs that wards off hair loss and promotes hair growth. Of various approaches to hair restoration, Hair Million offers advantages including low cost compared with other methods or drugs, and safety, because it is made of safe and healthy herbs.

    Hair Million works for women as well as men.









    DreamPharm Products:

    Lutein Lutein and rutin for eye protection|| Milk thistle silymarin for healthy liver|| Saw palmettofor prostate health|| Triple B Super Vision bilberry, blueberry and blackberry plus more. Great eye nutrients|| Garlic, Ginger, and Grapeseed Extract Garlic, ginger, and grapeseed extract. Great antioxidant nutrients|| Ginseng and Ginkgo Panax ginseng and Ginkgo biloba together!|| DHEA DHEA and Panax ginseng together for your stamina and youthfulness|| Coenzyme Q10 CoQ10 and three cardiotonic herbs together!|| Sleep Aid herbal formula Great soporific herbs and melatonin formula|| Colon cleansing, Laxative herbal formula for constipation relief, colon cleansing, and weight loss




    Online Health Store Health Info
    DreamPharm Herbs and Nutritions
    Mother Nature's Timeless Recipes