Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 7 de 7
Filtrar
Más filtros











Base de datos
Intervalo de año de publicación
1.
Phytother Res ; 32(2): 321-332, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29168264

RESUMEN

Miracle fruit (Synsepalum dulcificum) seed oil (MFSO) contains phytochemicals and nutrients reported to affect musculoskeletal performance. The purpose of this study was to assess the safety and efficacy of a compression wristband containing MFSO on its ability to measurably improve the hand and finger motor skills of participants. Healthy right-handed participants (n = 38) were randomized in this double-blind, placebo-controlled study of MFSO and vehicle wristbands. Subjects wore the wristband on their left hand 4-6 weeks and then only on their right hand 2-4 weeks; the contralateral untreated hand served as an additional control. Twelve hand/finger motor skills were measured using quantitative bio-instrumentation tests, and subject self-assessment questionnaires were conducted. With each hand, in 9/12 tests, the MFSO group showed a clinically meaningful average improvement compared with an average worsening in the vehicle group. Statistical superiority to the control treatment group was exhibited in 9/12 tests for each hand (p < .01). After discontinuing the MFSO wristband on the left hand, test values regressed toward baseline levels. Subjects favored the MFSO wristband over the control, rating it as effective in improving their motor skills. Use of the MFSO wristband may improve an individual's manual dexterity skills and ability to maintain this performance.


Asunto(s)
Destreza Motora/efectos de los fármacos , Extractos Vegetales/química , Synsepalum/química , Adulto , Anciano , Método Doble Ciego , Femenino , Voluntarios Sanos , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven
2.
J Clin Aesthet Dermatol ; 10(11): 39-48, 2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29399260

RESUMEN

Background: Hair breakage is a common unrecognized form of hair loss in women most often the result of hair weathering and traumatic grooming practices. Lipids are major determinants of the physical properties of the hair. Synsepalum dulcificum seed oil (MFSO®; Miracle Fruit Oil Co., Miami Beach, Florida), is an exotic fruit oil with physicochemical properties suited to providing a superior ability to reduce hair breakage. Objective: To assess the safety and efficacy of a hair oil containing MFSO and its effects on hair breakage rates. Methods: Healthy, long-haired women (age range: 19-63 years, mean age: 36.7 years, standard deviation: 10.77 years) with excessive hair breakage were randomized in this double-blind, placebo-controlled study to receive MFSO (n=24), vehicle (n=17), or argan oil (n=16). Measurements of hair length, hair diameter, and Hair Mass Index were performed at baseline, Month 4, and Month 8. Hair Breakage Index and the Healthy Hair Index values were calculated from the trichometer measurements, and subject self-assessment questionnaires were conducted. The primary efficacy endpoints were the percent change in Healthy Hair Index 75 and Healthy Hair Index 50 measurements from baseline to the eighth month. Results: The Healthy Hair Index calculations, expressed as percent change from baseline to Month 4 and from baseline to Month 8, revealed that the MFSO® treatment group improved by 103.6 percent and 215.7 percent for the Healthy Hair Index 75 and 133.7 and 188.3 percent for the Healthy Hair Index 50 values, respectively. When compared with the vehicle and the argan oil brand groups, the Healthy Hair Index levels were significantly higher (p < 0.001) for the MFSO® treatment group, indicating a much greater ability to increase the levels of unbroken hairs by reducing hair breakage. With respect to the mean percent improvements from baseline to Month 4 and Month 8, the MFSO® hair oil treatment group was better than each of the other two treatment groups by at least 117.6 percent and 234.9 percent for the Healthy Hair Index 75 and 316.5 percent and 312 percent for the Healthy Hair Index 50 values, respectively, thereby achieving the primary efficacy objective. Subjects favored the MFSO® hair oil treatment, rating it as safe, effective, and aesthetically pleasing. Conclusions: The MFSO hair oil product is a safe and effective option for the treatment of women suffering from hair breakage and damaged hair.

3.
Antivir Ther ; 14(2): 231-9, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19430098

RESUMEN

BACKGROUND: Antiretroviral therapy that targets HIV type-1 (HIV-1) reverse transcriptase (RT) can be linked to mutations in the thumb-connection (amino acids [AA] 241-426) and RNase H (AA 427-560) domains, which could affect drug resistance. METHODS: Genotypical and statistical analyses were performed on HIV-1 RT from 100 antiretroviral treatment-naive and 248 antiretroviral treatment-experienced patients, the majority of whom were infected with HIV-1 subtype B. The RT region was analysed in three parts: the polymerase (AA 1-240), thumb-connection (AA 241-426) and RNase H (AA 427-560) domains. RESULTS: The polymerase domain had statistically significant changes between the two groups at 24 AA positions that are known resistance sites. Within the thumb-connection domain, R284 and N348 had statistically significant changes between the groups (P=0.007 and P< or =0.001, respectively). In treatment-experienced patients, 17.3% had R284K, whereas 24.5% had N348I substitutions. Both R284 and N348 were 100% conserved in treatment-naive patients. Within the RNase H domain, only K451 showed a statistically significant change (P

Asunto(s)
Transcriptasa Inversa del VIH/genética , VIH-1 , Mutación/efectos de los fármacos , Inhibidores de la Transcriptasa Inversa/uso terapéutico , Adenina/análogos & derivados , Adenina/uso terapéutico , Alquinos , Sustitución de Aminoácidos/efectos de los fármacos , Benzoxazinas/uso terapéutico , Ciclopropanos , Farmacorresistencia Viral Múltiple , Variación Genética/efectos de los fármacos , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Transcriptasa Inversa del VIH/química , VIH-1/efectos de los fármacos , VIH-1/genética , Humanos , Lamivudine/uso terapéutico , Organofosfonatos/uso terapéutico , Estructura Terciaria de Proteína/genética , Ribonucleasa H del Virus de la Inmunodeficiencia Humana/genética , Estavudina/uso terapéutico , Tenofovir
4.
J Biopharm Stat ; 17(5): 775-89, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17885865

RESUMEN

This is the white paper on Innovative Approaches in Drug Development developed by the Biotechnology Industry Organization's (BIO) Clinical Trial Designs Workgroup. As recognized by the Food and Drug Administration's Critical Path Opportunities Report, the need to develop and apply innovative approaches to create new trial designs and clinical development programs is rapidly on the rise. Such novel approaches hold tremendous potential in the ability to refine mechanisms lying at the fundamental core of product safety and efficacy. The paper addresses the opportunities, challenges in pre-clinical and clinical trial design innovations; emphasizes the importance of safety database; and makes recommendations for carrying out the innovative approaches. The views expressed here in are solely those of the authors and do not reflect the official views of the Biotechnology Industry Organization.


Asunto(s)
Ensayos Clínicos como Asunto/tendencias , Farmacología Clínica/tendencias , Proyectos de Investigación/tendencias , Ensayos Clínicos como Asunto/estadística & datos numéricos , Ensayos Clínicos Fase I como Asunto , Ensayos Clínicos Fase II como Asunto , Ensayos Clínicos Fase III como Asunto , Interpretación Estadística de Datos , Evaluación Preclínica de Medicamentos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Determinación de Punto Final , Humanos , Estados Unidos , United States Food and Drug Administration
5.
J Infect Dis ; 191(6): 825-9, 2005 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-15717255

RESUMEN

Human immunodeficiency virus (HIV)-infected South African patients (n=468) received blinded lamivudine or emtricitabine, stavudine, and either nevirapine or efavirenz (based on screening viral load). Baseline characteristics were analyzed in univariate and multivariate regression, to identify risk factors for hepatotoxicity (grade 3 or greater increase in serum aminotransferase levels). The occurrence of early hepatotoxicity was 17% in the nevirapine group and 0% in the efavirenz group and was balanced between the lamivudine and emtricitabine arms. Two subjects died of hepatic failure. Independent risk factors were body-mass index (BMI) <18.5, female sex, serum albumin level <35 g/L, mean corpuscular volume >85 fL, plasma HIV-1 RNA load <20,000 copies/mL, aspartate aminotransferase level <75 IU/L, and lactate dehydrogenase level <164 IU/L. The use of nevirapine in female patients with a low BMI should be discouraged.


Asunto(s)
Fármacos Anti-VIH/efectos adversos , Infecciones por VIH/tratamiento farmacológico , Hígado/efectos de los fármacos , Nevirapina/efectos adversos , Inhibidores de la Transcriptasa Inversa/efectos adversos , Adulto , Alanina Transaminasa/sangre , Aspartato Aminotransferasas/sangre , Quimioterapia Combinada , Femenino , Infecciones por VIH/virología , VIH-1/efectos de los fármacos , Humanos , Masculino , Análisis de Regresión , Factores de Riesgo , Resultado del Tratamiento
6.
AIDS Res Hum Retroviruses ; 20(11): 1173-82, 2004 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-15588339

RESUMEN

Emtricitabine (FTC) is a potent deoxycytidine nucleoside analogue that was recently approved for the treatment of HIV infection. Emtricitabine is activated by intracellular phosphorylation to its 5'-triphosphate (FTC5'-TP), a competitive inhibitor of the HIV reverse transcriptase (RT). Early clinical studies incorporating pharmacokinetic-pharmacodynamic (PK-PD) analyses provided a sound rationale for developing FTC as a once daily drug. A short-term open-label monotherapy trial in therapy naive HIV-infected subjects evaluated various dosage regimens of FTC, i.e., 25, 100, and 200 mg qd and/or bid, with serial measurements of plasma HIV RNA, plasma FTC, and intracellular (PBMC) FTC-5'-TP levels over the 14 days of treatment. PK data were augmented by other steady-state studies, one in healthy volunteers and the other in HIV-infected patients receiving 200 mg FTC qd, with measurements of plasma FTC and/or intracellular FTC-5'-TP levels. Correlation between anti-HIV activity and FTC-5'-TP levels was examined with dose- and concentration-response relationships determined. The once daily dosing schedule is supported by the relatively long half-lives of plasma FTC (8-10 hr) and PBMC FTC-TP (39 hr) and the high plasma FTC and PBMC FTC-5'-TP concentrations. HIV RNA suppression (PD) correlates well with PBMC FTC-5'-TP levels (PK), both reaching a plateau at doses > or = 200 mg/day. The PK and PD characteristics of FTC demonstrate that it is a once daily nucleoside RT inhibitor.


Asunto(s)
Fármacos Anti-VIH , Desoxicitidina , Desoxicitidina/análogos & derivados , Infecciones por VIH/tratamiento farmacológico , Adulto , Fármacos Anti-VIH/administración & dosificación , Fármacos Anti-VIH/farmacocinética , Fármacos Anti-VIH/uso terapéutico , Desoxicitidina/administración & dosificación , Desoxicitidina/farmacocinética , Desoxicitidina/uso terapéutico , Relación Dosis-Respuesta a Droga , Esquema de Medicación , Emtricitabina , Femenino , Infecciones por VIH/virología , VIH-1/efectos de los fármacos , Humanos , Masculino , Persona de Mediana Edad
7.
J Infect Dis ; 188(11): 1652-8, 2003 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-14639535

RESUMEN

We conducted a randomized, open-label, 10-day study that compared the antiretroviral activity of emtricitabine (FTC) 25, 100, and 200 mg once daily and lamivudine (3TC) 150 mg 2 times/day in 82 human immunodeficiency virus (HIV)-infected patients with virus loads >5000 and <100,000 copies/mL who were naive for 3TC and abacavir. All FTC doses demonstrated potent antiretroviral activity. Significantly greater virus suppression was seen at the 200 mg/day dose of FTC than with the lower FTC doses and/or 3TC (P=.02, P=.04, and P=.04, respectively). At the 200 mg/day dose, FTC produced a 1.7-log10 mean reduction in virus load. Trough FTC levels at the 200 mg/day dose exceeded the in vitro 90% inhibitory concentration dose for FTC by 5-fold. The long plasma half-life and the superior antiviral activity versus 3TC of the 200 mg/day FTC dose confirmed the results of other studies and led to the selection of this dose for subsequent therapeutic trials.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Desoxicitidina/análogos & derivados , Desoxicitidina/uso terapéutico , Infecciones por VIH/tratamiento farmacológico , Lamivudine/uso terapéutico , Adolescente , Adulto , Anciano , Desoxicitidina/efectos adversos , Desoxicitidina/sangre , Relación Dosis-Respuesta a Droga , Emtricitabina , Humanos , Lamivudine/efectos adversos , Lamivudine/sangre , Persona de Mediana Edad , Estudios Prospectivos
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA