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emirates.net.ae
Four children on chemotherapy for acute lymphoblastic leukemia presented with severe diarrhea and dehydration. Cryptosporidium was identified in the stools using modified Ziehl-Neelsen stain. Two of them received paromomycin and responded well. One was started on paromomycin for 10 days and although there was clinical improvement, his stools examination continued to be positive for Cryptosporidium. He then received azithromycin for 10 days. He responded well and his stools became negative for Cryptosporidium. The fourth patient received azithromycin from the start and responded well. Cryptosporidium should be considered in all immunocompromised children with severe or prolonged diarrhea, and since it is not seen in a routine ova and parasite examination, the laboratory should be notified for diagnostic confirmation using modified Ziehl-Neelsen stain. Immunocompromised children with Cryptosporidium diarrhea may benefit from paromomycin or azithromycin therapy.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12729299&dopt=Abstract
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Emerg Infect Dis. 2003 May;9(5):596-8.
Eliminating trachoma in areas with limited disease.
Gaynor BD, Miao Y, Cevallos V, Jha H, Chaudary JS, Bhatta R, Osaki-Holm S, Yi E, Schachter J, Whitcher JP, Lietman T.
WHO Collaborating Center, F.I. Proctor Foundation, Department of Ophthalmology, University of California-San Francisco, San Francisco, CA 94143, USA.
The common wisdom is that a trachoma program cannot eliminate ocular chlamydia from a community, just reduce infection to a level where blindness would be minimal. We describe the success of multiple mass antibiotic treatments, demonstrating that complete elimination of infection may be an attainable goal in an area with modest disease.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12737745&dopt=Abstract
word match zithromax online literature
facm.ucl.ac.be
PURPOSE: The purpose of this work was to examine and understand the cellular pharmacokinetics of two basic esters of ampicillin, pivaloyloxymethyl (PIVA) and phthalimidomethyl (PIMA), in comparison with lysosomotropic drugs (chloroquine, azithromycin). METHODS: Cell culture studies (J774 macrophages) were undertaken to study uptake and release kinetics and to assess the influence of concentration, pH, proton ionophore (monensin), and MRP and P-gp inhibitors (probenecid, gemfibrozil, cyclosporin A, GF 120918). Equilibrium dialysis with liposomes were performed to directly asses the extent of drug binding to bilayers. Conformational analysis modeling of the drug penetration in bilayers was conducted to rationalize the experimental observations. RESULTS: PIVA and PIMA showed properties in almost complete contrast with those of chloroquine and azithromycin, i.e., fast apparent accumulation and fast release at 4 degrees C as well as at 37 degrees C, saturation of uptake (apparent Kd 40 microM), no influence of monensin, MRP, or P-gp inhibitors; tight binding to liposomes (Kd approx. 40 microM); and sharp increase in calculated free energy when forced in the hydrophobic domain. CONCLUSIONS: Although they are weak organic bases, PIVA and PIMA show none of the properties of lysosomotropic agents. We hypothesize that they remain locked onto the pericellular membrane and may never penetrate cells as such in significant amounts.
online pharmacy ref source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12739771&dopt=Abstract
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