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A 4-year retrospective study of add-on therapy to the fixed combination of dorzolamide/timolol for the treatment of POAG

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International Journal of Ophthalmology(English edition) 2014年第2期7卷 330-334页

作者： Curt Hartleben-Matkin Diddier Prada rafael mancilla-vences Glaucoma Service Instituto de Oftalmología Fundación Conde de Valenciana Unidad de Investigación Biomédica en Cáncer Instituto Nacional de Cancerología de México Departamento de Informática Biomédica Faculty of Medicine Universidad Nacional Autónoma de México(UNAM) Laboratory of Environmental Epigenetics Harvard School of Public Health

AIM:To evaluate the long-term response to the fixed combination of dorzolamide/timolol in patients with primary open angle glaucoma(POAG)and the addition of other intraocular pressure(IOP)lowering medications such as prostaglandin analogs and ***:A retrospective,non-randomized,and descriptive clinical study was performed with 182 eyes diagnosed with *** were divided into three groups:a group with fixed combination of dorzolamide/timolol only,a second group with prostaglandin analogs plus fixed combination of dorzolamide/timolol,and a third group with the addition of brimonidine to the same fixed *** data were gathered retrospectively and the differences between groups were ***:IOP was reduced satisfactorily in all three groups;however,a progressive IOP reduction was noted in the group with the fixed combination plus prostaglandin *** this group,a progressive,significant and more homogeneous response of the reduction was noted in comparison with the other ***:IOP reduction was efficacious in all three *** addition of prostaglandin analogs showed progressive IOP reduction,progressive responseand absence of long-term *** did not show a significant additive effect.

关键词： fixed combination, Cosopt® , dorzolamide/timolol, prostaglandin analogs, brimonidine, glaucoma

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Xenobiotic-Metabolizing Enzymes in Skeletal Muscle of Children and Adolescents

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Pharmacology & Pharmacy 2013年第2期4卷 231-239页

作者： Dora Molina-Ortiz José Francisco González-Zamora rafael Camacho-Carranza Ocarol Lopez-Acosta Oscar Colin-Martinez Adriana Miriam Domínguez-Ramírez Araceli vences-Mejía Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México México City México. Laboratorio de Cirugía Experimental INP México City México. Laboratorio de Farmacocinética y Farmacodinamia UAMX México City México. Laboratorio de Toxicología Genética Instituto Nacional de Pediatría (INP) México City México Servicio de Ortopedia INP México City.

Cytochrome P450 (CYP) enzymes metabolize endogenous compounds such as steroid hormones, fatty acids, and xenobiotics, including drugs and carcinogens. The skeletal muscle is highly exposed to circulating xenobiotics;nevertheless the knowledge on the expression of these enzymes not only in adult skeletal muscle but also in younger individuals has been very little. Therefore, the aim of the present study was to investigate the expression of CYP enzymes in healthy skeletal muscles of children and adolescents. This was investigated in a total of 18 biopsies taken from the quadriceps skeletal muscle of younger patients: 9 boys and 9 girls (≤18 years) by using specific antibodies in immunoblots and by RT-PCR mRNA analysis. The mRNA transcripts for CYP1B1 and CYP2E1 were consistently detected in all samples, but in the immunoblot only was identified CYP1B1 protein in four samples. Regarding CYP1A1, CYP3A4 and CYP3A5 enzymes in skeletal muscle, there were found in some samples in both techniques, although with significant inter-individual variations. Finally CYP2W1 only was detected in one sample belonging to the youngest patient. These data show that a range of CYP enzymes are expressed in the skeletal muscle of children and adolescents, suggesting that the metabolism of several xenobiotic chemicals to which humans are exposed takes place in muscle cells. Moreover, since the potential participation of muscles is a fact in pharmacokinetics of many therapeutic drugs, expression of CYPs in skeletal muscle may play an important role in drug-dependent toxicity.

关键词： Cytochrome P450 Skeletal Muscle Children Adolescents

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