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1.
Pharmacol Res ; 161: 105098, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32730903

RESUMEN

BACKGROUND: We aimed to investigate the effect of chromium supplementation on glycemic control indices in patients with type 2 diabetes (T2DM). METHODS: Randomized controlled trials examining the effect of chromium supplementation on glycemic control indices and published before February 2020 were detected by searching online databases, including PubMed, Scopus, Embase, Web of sciences and The Cochrane Library, using a combination of suitable keywords. Mean change and standard deviation (SD) of the outcome measures were used to estimate the mean difference between the supplementation group and the control group at follow-up. RESULTS: Twenty-eight studies reported fasting plasma glucose (FPG), insulin, hemoglobin A1C (HbA1C) and homeostatic model assessment for insulin resistance (HOMA-IR) as an outcome measure. Results revealed significant reduction in FPG (weighted mean difference (WMD): -19.00 mg/dl, 95% CI: -36.15, -1.85, P = 0.030; I2: 99.8%, p < 0.001), insulin level (WMD: -12.35 pmol/l, 95% CI: -17.86, -6.83, P < 0.001), HbA1C (WMD: -0.71 %, 95% CI: -1.19, -0.23, P = 0.004) and HOMA-IR (WMD: -1.53, 95% CI: -2.35, -0.72, P < 0.001; I2: 89.9%, p < 0.001) after chromium supplementation. CONCLUSION: The results of the current meta-analysis study might support the use of chromium supplementation for the improvement of glycemic control indices in T2DM patients.


Asunto(s)
Glucemia/efectos de los fármacos , Compuestos de Cromo/uso terapéutico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Suplementos Dietéticos , Control Glucémico , Hipoglucemiantes/uso terapéutico , Adulto , Anciano , Biomarcadores/sangre , Glucemia/metabolismo , Compuestos de Cromo/efectos adversos , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/diagnóstico , Suplementos Dietéticos/efectos adversos , Femenino , Hemoglobina Glucada/metabolismo , Control Glucémico/efectos adversos , Humanos , Hipoglucemiantes/efectos adversos , Insulina/sangre , Masculino , Persona de Mediana Edad , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Tratamiento
2.
Biol Trace Elem Res ; 190(2): 414-424, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30430418

RESUMEN

The aim of the study was to assess the combined effects of chromium(III) supplementation and iron deficiency on the copper (Cu) and zinc (Zn) status in female rats. The Cr, Fe, Cu and Zn dietary and tissular levels were measured by Atomic Absorption Spectrometry (AAS) method. The data show that chromium(III) supplementation compensated for the negative effects of Fe deficiency on the Cu content but it deepened the effect on Zn levels in the female rats. Detailed data on the status of trace elements and their interactions in healthy subjects and patients with metabolic disorders (e.g. anaemia, diabetes mellitus) are strongly required for effective nutritional and therapeutic strategies.


Asunto(s)
Anemia Ferropénica/tratamiento farmacológico , Compuestos de Cromo/uso terapéutico , Cobre/uso terapéutico , Compuestos Férricos/uso terapéutico , Zinc/uso terapéutico , Anemia Ferropénica/metabolismo , Animales , Peso Corporal , Compuestos de Cromo/administración & dosificación , Cobre/administración & dosificación , Suplementos Dietéticos , Modelos Animales de Enfermedad , Relación Dosis-Respuesta a Droga , Ingestión de Alimentos/efectos de los fármacos , Femenino , Compuestos Férricos/administración & dosificación , Ratas , Ratas Wistar , Relación Estructura-Actividad , Zinc/administración & dosificación
3.
Nutr J ; 14: 14, 2015 Feb 13.
Artículo en Inglés | MEDLINE | ID: mdl-25971249

RESUMEN

AIMS: Chromium (Cr) is a trace element involved in glucose homeostasis. We aim to evaluate and quantify the effects of Cr supplementation on A1C and FPG in patients with T2DM. MATERIALS AND METHODS: A systematic literature search of Pubmed, EMBASE and the Cochrane Library (from database inception to 11/2014) with no language restrictions sought RCTs or cohort studies evaluating Cr supplementation in T2DM vs control and reporting either change in glycated hemoglobin (A1C) or fasting plasma glucose (FPG). Meta-analysis was conducted on each subtype of Cr supplement separately, and was analyzed by random effects model to yield the weighted mean differences (WMD) and 95% confidence intervals (CIs). Heterogeneity was assessed by using the I(2) statistic. RESULTS: A total of 14 RCTs (n=875 participants, mean age range: 30 to 83 years old, 8 to 24 weeks of follow-up) were identified (Cr chloride: n=3 study, Cr picolinate: n=5 study, brewer's yeast: n=4 study and Cr yeast: n=3 study). Compared with placebo, Cr yeast, brewer's yeast and Cr picolinate did not show statistically significant effects on A1C. Furthermore, compared to control, Cr chloride, Cr yeast and Cr picolinate showed no effect on FPG, however, brewer's yeast showed a statistically significant decrease in FPG -19.23 mg/dL (95% CI=-35.30 to -3.16, I(2)=21%, n=137). CONCLUSIONS: Cr supplementation with brewer's yeast may provide marginal benefits in lowering FPG in patients with T2DM compared to placebo however it did not have any effect on A1C.


Asunto(s)
Glucemia/efectos de los fármacos , Cromo/uso terapéutico , Diabetes Mellitus Tipo 2/dietoterapia , Hemoglobina Glucada/efectos de los fármacos , Oligoelementos/uso terapéutico , Adulto , Anciano , Anciano de 80 o más Años , Cloruros/uso terapéutico , Cromo/administración & dosificación , Compuestos de Cromo/uso terapéutico , Diabetes Mellitus Tipo 2/sangre , Suplementos Dietéticos , Ayuno/sangre , Femenino , Humanos , Masculino , Persona de Mediana Edad , Ácidos Picolínicos/uso terapéutico , Saccharomyces cerevisiae/química , Oligoelementos/administración & dosificación , Resultado del Tratamiento
4.
Forsch Komplementmed ; 22(1): 18-23, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25824400

RESUMEN

BACKGROUND: Seasonal allergic rhinitis (SAR), also known as hay fever, is a widespread chronic respiratory disease. In treatment of SAR the use of complementary therapies is increasing, but little has been published about homeopathic complex remedies so far. Therefore, we think it is time to conduct and publish an appropriate observational study. METHODS: Course of single symptoms, impairment of quality of life, general efficacy, and tolerability of a homeopathic complex remedy containing active substances on a low dilution level have been assessed and analyzed. Altogether, 123 patients with a history of allergic rhinitis of up to 45 years have been observed for about 4 weeks. RESULTS: The majority of symptoms were shown to improve substantially and the patients' quality of life increased clearly. The overall symptom score decreased significantly from 10.3 ± 4.7 to 3.9 ± 3.1 points (p < 0.0001), and reduction of impairment of quality of life from 5.7 ± 2.3 to 1.9 ± 1.8 score points was also significant (p < 0.0001). Rating of efficacy of study medication was markedly better than efficacy rating of previous therapies (p = 0.0193). Apart from one temporary allergic reaction, the treatment was well tolerated. CONCLUSION: The homeopathic complex remedy (Pascallerg®) tested in this observational study offers a useful option in treatment of SAR in children and adults.


Asunto(s)
Terapias Complementarias/normas , Materia Medica/uso terapéutico , Rinitis Alérgica Estacional/tratamiento farmacológico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Compuestos de Cromo/uso terapéutico , Enfermedad Crónica/terapia , Femenino , Formiatos/uso terapéutico , Gelsemium/química , Humanos , Masculino , Persona de Mediana Edad , Extractos Vegetales/uso terapéutico , Compuestos de Potasio/uso terapéutico , Estudios Prospectivos , Calidad de Vida , Sulfatos/uso terapéutico , Resultado del Tratamiento
5.
J Inorg Biochem ; 146: 97-103, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25631328

RESUMEN

Diabetes, particularly type II diabetes, is a severe disease condition which affects human health worldwide, with a dramatically increasing trend in Asian countries including China. Currently, no efficient drugs other than those with observable side effects are available. Chromium complexes, with the most known representative chromium picolinate, have been listed as one of most attractive health supplements to attenuate this disease condition in western countries. Recent efforts have been made to develop new chromium complexes with novel ligands. Although fair amounts of reviews have been published to emphasize the biological activity, preclinical and clinical information of chromium picolinate, this mini-review is trying to cover the entire picture of updated research efforts on various chromium complexes highlighting the role of ligands. Chromium phenylalanine sensitizes insulin cell signaling pathway via the activation of phosphorylation of Akt (protein kinase B (PKB)) and/or AMPK (AMP-activated protein kinase). The biological activities, toxicity, pharmacological features and clinical implications, including the effect of anti-oxidative capacities, protective effect on obese-induced heart dysfunction, and efficacy and safety of chromium supplementation in diabetes are discussed as well.


Asunto(s)
Compuestos de Cromo/farmacología , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Hipoglucemiantes/farmacología , Compuestos Organometálicos/farmacología , Proteínas Quinasas Activadas por AMP/metabolismo , Animales , Compuestos de Cromo/química , Compuestos de Cromo/uso terapéutico , Diabetes Mellitus Tipo 2/metabolismo , Humanos , Hipoglucemiantes/química , Hipoglucemiantes/uso terapéutico , Compuestos Organometálicos/química , Compuestos Organometálicos/uso terapéutico , Proteínas Proto-Oncogénicas c-akt/metabolismo
6.
J Diabetes Res ; 2014: 862473, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24812635

RESUMEN

In China, TianMai Xiaoke tablet (TM) is used to treat type 2 diabetes. However, the exact mechanism of TM is not clear. This study is to investigate the effect of TM on glucose metabolism in diabetic rats and to identify whether TM takes a direct action through microRNAs on islet. Rats were divided into control group, diabetic group, low dose of TM group (TML), and high dose of TM group (TMH). Pancreas samples were analyzed using microRNA array and Q-PCR. Eight-week treatment with TM significantly decreased fasting blood glucose. The blood glucose was significantly reduced in TM-treated groups before and after oral glucose administration. Fasting insulin and HOMA-IR were suppressed in TM-treated groups. miR-448, let-7b, miR-540, miR-296, miR-880, miR-200a, miR-500, miR-10b, miR-336, miR-30d, miR-208, let-7e, miR-142-5p, miR-874, miR-375, miR-879, miR-501, and miR-188 were upregulated, while miR-301b, miR-134, and miR-652 were downregulated in TMH group. Through target gene analysis and real-time PCR verification, we found that these miRNAs, especially miR-375 and miR-30d, can stimulate insulin secretion in islet. Our data suggest that TM can improve blood glucose in diabetic rats which involved increasing the expression of miR-375 and miR-30d to activate insulin synthesis in islet.


Asunto(s)
Cromo/uso terapéutico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Medicamentos Herbarios Chinos/uso terapéutico , Hipoglucemiantes/uso terapéutico , Islotes Pancreáticos/efectos de los fármacos , MicroARNs/metabolismo , Animales , Peso Corporal/efectos de los fármacos , Cromo/administración & dosificación , Cromo/efectos adversos , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/efectos adversos , Compuestos de Cromo/uso terapéutico , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/metabolismo , Relación Dosis-Respuesta a Droga , Medicamentos Herbarios Chinos/administración & dosificación , Medicamentos Herbarios Chinos/efectos adversos , Hiperglucemia/prevención & control , Hiperinsulinismo/prevención & control , Hipoglucemiantes/administración & dosificación , Hipoglucemiantes/efectos adversos , Insulina/biosíntesis , Insulina/metabolismo , Resistencia a la Insulina , Secreción de Insulina , Islotes Pancreáticos/metabolismo , Masculino , Distribución Aleatoria , Ratas , Ratas Sprague-Dawley , Regulación hacia Arriba/efectos de los fármacos
7.
J Nutr Biochem ; 22(11): 1030-4, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-21216583

RESUMEN

Excessive body weight is inversely associated with insulin sensitivity in children and adults. Chromium supplementation produces modest improvement in insulin sensitivity in adults. The aim of this study was to examine the beneficial effects of chromium supplementation on insulin sensitivity and body composition in overweight children simultaneously modifying lifestyle. Twenty-five overweight children aged 9-12 years were randomized to receive either 400 µg of chromium chloride or placebo in double-blind fashion, during a 6-week lifestyle modification regimen that included nutritional education and 3×90 min of aerobic physical activity weekly. Insulin sensitivity was demonstrated using homeostasis model assessment-insulin resistance and quantitative insulin sensitivity check index (QUICKI). Changes in body mass index (BMI; kg/m(2)), BMI Z-score, waist circumference, body composition and fasting plasma glucose were measured. Although no significant benefit of chromium supplementation over placebo was evident for BMI, BMI Z-score and fasting insulin level, children who received chromium chloride demonstrated more positive changes versus the placebo group in HOMA (-1.84±1.07 vs. 0.05±0.42, P=.05), QUICKI (0.02±0.01 vs. -0.002±0.01, P=.05), lean body mass (2.43±0.68 kg vs. 1.36±1.61 kg, P=.02) and percentage body fat (-3.32±1.29% vs. 0.65±1.05%, P=.04). The desirable effects of chromium supplementation on insulin sensitivity and body composition were more apparent in pre-pubertal children. These results suggest that short-term chromium supplementation can improve insulin sensitivity and body composition in overweight children.


Asunto(s)
Cloruros/uso terapéutico , Compuestos de Cromo/uso terapéutico , Resistencia a la Insulina , Sobrepeso/tratamiento farmacológico , Composición Corporal/efectos de los fármacos , Índice de Masa Corporal , Niño , Método Doble Ciego , Femenino , Homeostasis , Humanos , Masculino , Modelos Biológicos
8.
Biol Trace Elem Res ; 143(2): 1031-43, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-21161430

RESUMEN

The synthesis, characterization, anti-hyperglycemic activity, oxidative DNA damage capacity, and acute toxicity of chromium(III) malate complex [Cr2(LMA)3] were described. [Cr2(LMA)3] was synthesized in a single-step reaction by chelating chromium(III) with L-malic acid in aqueous solution. Based on elemental analysis, thermodynamic analysis, and spectroscopy studies, the molecular formula of [Cr2(LMA)3] was inferred as Cr2(C4H4O5)3·5H2O. Daily treatment with 2.85-17.10 mg/kg body mass of [Cr2(LMA)3] in alloxan-induced diabetic rats for 2 weeks indicated that low-molecular-weight organic chromium complex [Cr2(LMA)3] had better bioavailability and more beneficial influences on the improvement of controlling blood glucose, serum lipid, and liver glycogen levels compared with CrCl3·6H2O. [Cr2(LMA)3] did not cause oxidative DNA damage under physiologically relevant conditions. Acute toxicity studies revealed no-measurable toxicity of the [Cr2(LMA)3]. Collectively, these results suggest that [Cr2(LMA)3] may represent a novel, proper chromium supplement with potential therapeutic value to control blood glucose and serum lipid in diabetes.


Asunto(s)
Compuestos de Cromo/uso terapéutico , Diabetes Mellitus Experimental/tratamiento farmacológico , Hipoglucemiantes/uso terapéutico , Animales , Glucemia/efectos de los fármacos , Colesterol/metabolismo , Daño del ADN/efectos de los fármacos , Diabetes Mellitus Experimental/metabolismo , Femenino , Glucógeno Hepático/metabolismo , Masculino , Ratas , Triglicéridos/metabolismo
9.
Am J Health Syst Pharm ; 67(7): 535-41, 2010 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-20237381

RESUMEN

PURPOSE: The effect of i.v. chromium administration on glucose control in two patients receiving enteral nutrition is described. SUMMARY: Chromium supplementation has been hypothesized to potentiate the actions of insulin in facilitating cellular uptake of glucose. We report two cases-one involving a diabetic patient and the other a nondiabetic patient-in which chromium administration appeared to decrease insulin requirements. In case 1, a diabetic patient given a single course of chromic chloride appeared to have a probable response to the drug. Within the first day of chromic chloride administration, insulin requirements declined. When chromic chloride was discontinued, insulin requirements did not rise, suggesting efficacy and sustained effect. The patient's glucose intake and blood glucose levels remained relatively stable, while there was a significant decline in insulin requirements. Serum chromium levels were not assessed, so it is uncertain if the patient experienced chromium deficiency or if it was adequately treated with chromium supplementation, and a dose-response relationship could not be ascertained because the patient received a continuous infusion of chromium. In case 2, the insulin requirements of a nondiabetic patient appeared to decrease in response to multiple courses of chromic chloride. Upon initial discontinuation of chromic chloride, the patient's lower insulin requirements were sustained for a few days, but changes in clinical status and other medications precipitated elevated insulin requirements and the need for subsequent chromic chloride administration. Further research in more controlled settings is necessary to elucidate chromium's effect on insulin requirements. CONCLUSION: Infusion of chromic chloride appeared to reduce insulin requirements in one diabetic patient and one nondiabetic patient.


Asunto(s)
Glucemia/metabolismo , Cloruros/uso terapéutico , Compuestos de Cromo/uso terapéutico , Diabetes Mellitus/sangre , Diabetes Mellitus/tratamiento farmacológico , Nutrición Enteral , Accidentes de Tránsito , Delirio por Abstinencia Alcohólica/tratamiento farmacológico , Delirio por Abstinencia Alcohólica/psicología , Intoxicación Alcohólica , Cloruros/administración & dosificación , Compuestos de Cromo/administración & dosificación , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Humanos , Hipoglucemiantes/administración & dosificación , Hipoglucemiantes/uso terapéutico , Inyecciones Intravenosas , Insulina/administración & dosificación , Insulina/uso terapéutico , Resistencia a la Insulina , Masculino , Metilprednisolona/uso terapéutico , Persona de Mediana Edad , Pancreatitis/complicaciones , Pancreatitis/tratamiento farmacológico , Infecciones por Pseudomonas/complicaciones , Infecciones por Pseudomonas/tratamiento farmacológico
10.
Drug Alcohol Depend ; 102(1-3): 116-22, 2009 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-19328636

RESUMEN

BACKGROUND: St John's wort is an effective antidepressant that can reduce tobacco withdrawal symptoms, but it is not known whether it assists cessation. Chromium assists weight loss and might limit post cessation weight gain. METHODS: In a factorial design, we randomised smokers stopping smoking to 900 mg St John's wort (SJW) active or placebo and also randomised them to 400 microm chromium or placebo daily. Treatment started 2 weeks prior to quit day and continued for 14 weeks. Participants and researchers were blind to treatment allocation. All participants received weekly behavioural support. The primary endpoints were biochemically confirmed prolonged abstinence and mean weight gain in abstinent smokers 4 weeks after quitting. RESULTS: 6/71 (8.5%) participants on active SJW and 9/72 (12.5%) on placebo achieved prolonged abstinence at 4 weeks, an odds ratio (OR) (95% confidence interval) of 0.65 (0.22-1.92). At 6 months, 3 (4.2%) SJW active and 6 (8.3%) SJW placebo participants were still abstinent, an OR of 0.49 (0.12-2.02). Among these participants, the mean difference in weight gain between active chromium and placebo was -0.8 1kg (-3.79 to 2.18) at 4 weeks and -3.88 kg (-12.13 to 4.38) at 6 months. CONCLUSIONS: Taking together the absolute quit rates, the small difference between active and placebo, and lack of effects on withdrawal shows that SJW is ineffective for smoking cessation. Insufficient people stopped smoking to properly test the efficacy of chromium in preventing weight gain, but the point estimate indicates a potentially worthwhile benefit.


Asunto(s)
Compuestos de Cromo/uso terapéutico , Hypericum , Cese del Hábito de Fumar/métodos , Aumento de Peso/efectos de los fármacos , Adulto , Ansiedad/prevención & control , Ansiedad/psicología , Depresión/prevención & control , Depresión/psicología , Suplementos Dietéticos , Educación , Determinación de Punto Final , Etnicidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Fumar/psicología , Factores Socioeconómicos , Síndrome de Abstinencia a Sustancias/prevención & control
11.
Exp Clin Endocrinol Diabetes ; 112(5): 248-52, 2004 May.
Artículo en Inglés | MEDLINE | ID: mdl-15146370

RESUMEN

Though supplementation of chromium has been found to improve deranged carbohydrate and lipid metabolism associated with suboptimal chromium intake in patients, its usefulness in the treatment of diabetes mellitus of variable etiology remains questionable. In the present investigation, the effect of 6 wk oral administration of chromium chloride (CC) on the glucose and lipid metabolism was studied in streptozotocin (STZ) diabetic and neonatal-STZ (nSTZ) diabetic rats. Further, its cellular mechanism was studied using 3T3-L1 adipocyte and C2C12 myoblast cell lines. Treatment with CC significantly improved the impaired glucose tolerance and insulin sensitivity of both STZ diabetic and nSTZ diabetic rats without any change in basal or glucose stimulated insulin response indicating insulin-sensitizing action of chromium. CC treatment also significantly improved deranged lipid metabolism. CC per se did not produce any effect in vitro, however, significantly increased insulin stimulated glucose uptake in C2C12 myoblasts and differentiation of 3T3-L1 preadipocytes into mature adipocytes supporting the in vivo insulin-sensitizing action of chromium. This study shows that CC exhibited significant anti-diabetic potential in chemically-induced diabetes in rats, the mechanism of which appears to be potentiation of insulin actions at the target tissues leading to improved peripheral insulin sensitivity.


Asunto(s)
Cloruros/uso terapéutico , Compuestos de Cromo/uso terapéutico , Diabetes Mellitus Experimental/tratamiento farmacológico , Hipoglucemiantes/uso terapéutico , Adipocitos/citología , Adipocitos/efectos de los fármacos , Adipocitos/patología , Animales , Glucemia/efectos de los fármacos , Diferenciación Celular/efectos de los fármacos , Línea Celular , Modelos Animales de Enfermedad , Conducta de Ingestión de Líquido/efectos de los fármacos , Ingestión de Energía/efectos de los fármacos , Humanos , Insulina/sangre , Ratones , Músculo Esquelético , Ratas , Ratas Wistar
12.
J Clin Oncol ; 21(23): 4350-5, 2003 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-14645424

RESUMEN

PURPOSE: To conduct a prospective study of intraperitoneal radioactive chromic phosphate (32P) versus cyclophosphamide-cisplatin (CP) in women with early ovarian cancer at high risk for recurrence (International Federation of Gynecology and Obstetrics stage Ia or Ib grade 3 or Ic or stage II, no macroscopic residual disease) and to compare cumulative incidence of recurrence, overall survival, and relative toxicity. MATERIALS AND METHODS: A total of 251 patients were randomly assigned to treatment with 32P or CP. Twenty-two (8.7%) were ineligible following centralized pathology review. Of the 229 patients included in the analysis, 110 received 32P, and 119 received CP. RESULTS: The cumulative incidence of recurrence at 10 years was 35% (95% CI, 27% to 45%) for patients receiving 32P and 28% (95% CI, 21% to 38%) for those receiving CP. Patients receiving CP had a recurrence rate 29% lower than that of those receiving 32P (P =.15, two-tail test). The death rate for patients treated with CP was 17% lower than that for patients treated with 32P (difference not significant). Combining both arms, the 10-year cumulative incidence of recurrence for all stage I patients was 27% (95% CI, 20% to 34%) compared with 44% (95% CI, 32% to 56%) for stage II patients (P =.01). Both regimens were reasonably well tolerated, but problems with inadequate distribution (7%) and small-bowel perforation (3%) make the otherwise less toxic 32P less acceptable. CONCLUSION: Although there are no statistically significant differences in survival, the lower cumulative recurrence seen with CP and complications of 32P administration make platinum-based combinations the preferred adjuvant therapy for early ovarian cancer patients at high-risk for recurrence.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Compuestos de Cromo/uso terapéutico , Neoplasias Ováricas/terapia , Fosfatos/uso terapéutico , Adenocarcinoma Mucinoso/mortalidad , Adenocarcinoma Mucinoso/patología , Adenocarcinoma Mucinoso/terapia , Adulto , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Carcinoma Endometrioide/mortalidad , Carcinoma Endometrioide/patología , Carcinoma Endometrioide/terapia , Quimioterapia Adyuvante , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/efectos adversos , Cisplatino/administración & dosificación , Terapia Combinada , Ciclofosfamida/administración & dosificación , Cistadenocarcinoma Seroso/mortalidad , Cistadenocarcinoma Seroso/patología , Cistadenocarcinoma Seroso/terapia , Supervivencia sin Enfermedad , Femenino , Humanos , Inyecciones Intraperitoneales , Persona de Mediana Edad , Recurrencia Local de Neoplasia/epidemiología , Neoplasias Ováricas/mortalidad , Neoplasias Ováricas/patología , Fosfatos/administración & dosificación , Fosfatos/efectos adversos , Radioisótopos de Fósforo , Estudios Prospectivos , Tasa de Supervivencia , Resultado del Tratamiento
13.
Ann Pharmacother ; 34(7-8): 878-95, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-10928401

RESUMEN

OBJECTIVE: To review the drug treatments and some of the popular, nontraditional remedies now available for type 2 diabetes mellitus, as well as selected investigational agents; to describe each medication's place in the overall approach to treatment. DATA SOURCES: English-language journals, abstracts, review articles, and newspaper accounts. DATA SYNTHESIS: In the past five years, there has been tremendous progress in the pharmacotherapy of diabetes, particularly type 2 diabetes. Several new agents have entered the clinical arena, and many more are in the late stages of investigation leading to approval. Sulfonylureas stimulate the production and release of insulin; these drugs must be used in patients with an intact pancreas. The meglitinides are nonsulfonylurea agents that are also insulin secretagogues. Unlike the sulfonylureas, repaglinide appears to require the presence of glucose to close the adenosine triphosphate-sensitive potassium channels and induce calcium influx. Metformin reduces hepatic glucose production in some patients and increases peripheral glucose utilization, but its use is hampered by a high percentage of adverse reactions. Disaccharidase inhibitors effectively compensate for the defective early-phase insulin release by slowing the production of sugars from carbohydrates. Thiazolidinediones appear to activate peroxisome proliferator-activated receptor gamma, which is involved in the metabolism of lipids. Short-acting insulin and the role of weight-loss agents are also discussed. CONCLUSIONS: The availability of new options for diabetes therapy provides a chance for successful therapy in a larger number of patients. However, it is important to consider how much true benefit these new forms of treatment will have on the diabetic community. The best choice for a patient remains controversial.


Asunto(s)
Biguanidas/uso terapéutico , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Hipoglucemiantes/uso terapéutico , Compuestos de Sulfonilurea/uso terapéutico , Tiazolidinedionas , Fármacos Antiobesidad/uso terapéutico , Biguanidas/efectos adversos , Cromanos/uso terapéutico , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/uso terapéutico , Terapias Complementarias , Diabetes Mellitus Tipo 2/terapia , Dietoterapia , Disacaridasas/antagonistas & inhibidores , Humanos , Insulina/metabolismo , Insulina/uso terapéutico , Leptina/uso terapéutico , Tiazoles/uso terapéutico , Troglitazona , Reino Unido , Compuestos de Vanadio/efectos adversos , Compuestos de Vanadio/uso terapéutico
14.
Domest Anim Endocrinol ; 15(5): 431-8, 1998 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-9785047

RESUMEN

The purported performance-enhancing effects of supplemental Cr, as elaborated in studies focusing on beef and dairy cattle models of agricultural stress, affect both immune and endocrine pathways. Furthermore, interactions between the immune and endocrine systems, associated with the actions of insulin and cortisol, may be coordinated through the production of regulatory cytokines. Unlocking the mechanism of action of Cr as a useful farm animal management tool may provide further understanding of the health and performance ramifications of immune-endocrine interactions in agricultural species.


Asunto(s)
Crianza de Animales Domésticos , Bovinos/inmunología , Compuestos de Cromo/farmacología , Sistema Endocrino/inmunología , Sistema Inmunológico/inmunología , Reacción de Fase Aguda/tratamiento farmacológico , Reacción de Fase Aguda/inmunología , Reacción de Fase Aguda/veterinaria , Animales , Formación de Anticuerpos/efectos de los fármacos , Formación de Anticuerpos/inmunología , Formación de Anticuerpos/fisiología , Bovinos/fisiología , Compuestos de Cromo/uso terapéutico , Citocinas/inmunología , Sistema Endocrino/efectos de los fármacos , Sistema Endocrino/fisiología , Femenino , Hidrocortisona/biosíntesis , Hidrocortisona/sangre , Sistema Inmunológico/efectos de los fármacos , Sistema Inmunológico/fisiología , Inmunidad Celular/efectos de los fármacos , Inmunidad Celular/inmunología , Inmunidad Celular/fisiología , Insulina/biosíntesis , Insulina/sangre
15.
Artículo en Inglés | MEDLINE | ID: mdl-8998364

RESUMEN

With the purpose of studying the effectivity of an intratumoral single dose of chromic [32P] phosphate with great particles for the treatment of solid tumors, studies of bioelimination, biodistribution and therapeutic action were carried out. Only for comparative purposes, similar studies were undertaken using a solution of sodium -32P- orthophosphate-gelatine. The results show that when sodium [32P] orthophosphate-gelatine is used, the percentage of total elimination is (85.90 +/- 8.70)% with a higher percentage in urine (64.50 +/- 13.70)% than in faeces (21.40 +/- 4.50)%. In biodistribution studies, the greater percentage is found in bone (15.54 +/- 2.21)% while only a (2.51 +/- 0.39)% remains in the tumor. When great particles chromic [32P]phosphate was intratumorally injected, we determined that the total elimination is equal (36.28 +/- 6.27)%, finding a higher amount in faeces (29.44 +/- 5.26)% than in urine (6.84 +/- 2.21)%. Biodistribution studies demonstrated that (49.82 +/- 5.41)% remains in the tumor and (9.63 +/- 4.89)% of the injected activity is found in the liver. On the other hand, when therapeutic action was evaluated, we observed that the percentage of tumor regression (P.T.R.) is 52.0% for the tumors injected with chromic [32P]phosphate and 0.0% for those injected with sodium [32P]orthophosphate-gelatine. These results show that the great particles colloid of chromic [32P]phosphate is not safe enough for the treatment of solid tumors, since it is mobilized from the injection point, delivering a high dose to the whole organism.


Asunto(s)
Adenocarcinoma/radioterapia , Compuestos de Cromo/uso terapéutico , Neoplasias Mamarias Experimentales/radioterapia , Fosfatos/uso terapéutico , Animales , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/farmacocinética , Heces/química , Femenino , Inyecciones , Fosfatos/administración & dosificación , Fosfatos/farmacocinética , Ratas , Ratas Sprague-Dawley , Inducción de Remisión , Resultado del Tratamiento , Orina/química
16.
Acta physiol. pharmacol. ther. latinoam ; 46(2): 103-10, 1996. tab, graf
Artículo en Inglés | BINACIS | ID: bin-22357

RESUMEN

With the purpose studying the effectivity of an intratumoral single dose of chromic [(32)P] phosphate with great particles for the treatment of solid tumors, studies of biolimination, biodistribution and therapeutic action were carried out. Only for comparative purpose, similar studies were undertaken using a solution of sodium [(32)P] orthophosphategelatine. The results show that when sodium [(32)P] orthophosphategelatine is used, the percentage of total elimination is (85.90+8,70) per cent with a higler percentage in urine (64.50+13.70) per cent than in faeces (21.40+4.50) per cent. In biodistribution studies, the greater percentage is found in bone (15.54+2.21) per cent while only a (2.51+0.39) per cent remains in the tumor. When great particles chromic [(32)P] phosphate was intratumorally injected, we determined that the total elimination is equal (36.28+6.27) per cent, finding a higler amount in faeces (29.44+5.26) per cent than in urine (6.84+2.21) per cent. Biodistribution studies demonstrated that (49.82+5.41) per cent remains in the tumor and (9.63+4.89) per cent of the injected activity is found in the liver. On the other hand, when therapeutic action was evoluted, we observed that the percentage of tumor regression (P.T.R) is 52.0 per cent for the tumors injected with chromic [(32)P] phosphate and 0.0 per cent for those injected with sodium [(32)P] orthophosphate-gelatine. These results show that the great particles colloid of chromic [(32)P] phosphate is not safe enough for the tratment of solid tumors, since it is mobilezed from the injection point, delivering a high dose to the whole organism. (AU)


Asunto(s)
Animales , Ratas , Femenino , Estudio Comparativo , Adenocarcinoma/radioterapia , Neoplasias Mamarias Experimentales/radioterapia , Compuestos de Cromo/uso terapéutico , Fosfatos/uso terapéutico , Sodio/uso terapéutico , Radioisótopos de Fósforo/uso terapéutico , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/farmacocinética , Fosfatos/administración & dosificación , Fosfatos/farmacocinética , Sodio/administración & dosificación , Sodio/farmacocinética , Radioisótopos de Fósforo/administración & dosificación , Radioisótopos de Fósforo/farmacocinética , Coloides , Inyecciones , Heces/química , Orina/química , Inducción de Remisión , Resultado del Tratamiento , Ratas Sprague-Dawley
17.
Acta physiol. pharmacol. ther. latinoam ; 46(2): 103-10, 1996. tab, graf
Artículo en Inglés | LILACS | ID: lil-172315

RESUMEN

With the purpose studying the effectivity of an intratumoral single dose of chromic [(32)P] phosphate with great particles for the treatment of solid tumors, studies of biolimination, biodistribution and therapeutic action were carried out. Only for comparative purpose, similar studies were undertaken using a solution of sodium [(32)P] orthophosphategelatine. The results show that when sodium [(32)P] orthophosphategelatine is used, the percentage of total elimination is (85.90+8,70) per cent with a higler percentage in urine (64.50+13.70) per cent than in faeces (21.40+4.50) per cent. In biodistribution studies, the greater percentage is found in bone (15.54+2.21) per cent while only a (2.51+0.39) per cent remains in the tumor. When great particles chromic [(32)P] phosphate was intratumorally injected, we determined that the total elimination is equal (36.28+6.27) per cent, finding a higler amount in faeces (29.44+5.26) per cent than in urine (6.84+2.21) per cent. Biodistribution studies demonstrated that (49.82+5.41) per cent remains in the tumor and (9.63+4.89) per cent of the injected activity is found in the liver. On the other hand, when therapeutic action was evoluted, we observed that the percentage of tumor regression (P.T.R) is 52.0 per cent for the tumors injected with chromic [(32)P] phosphate and 0.0 per cent for those injected with sodium [(32)P] orthophosphate-gelatine. These results show that the great particles colloid of chromic [(32)P] phosphate is not safe enough for the tratment of solid tumors, since it is mobilezed from the injection point, delivering a high dose to the whole organism.


Asunto(s)
Animales , Ratas , Femenino , Adenocarcinoma/radioterapia , Compuestos de Cromo/uso terapéutico , Neoplasias Mamarias Experimentales/radioterapia , Fosfatos/uso terapéutico , Radioisótopos de Fósforo/uso terapéutico , Sodio/uso terapéutico , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/farmacocinética , Coloides , Heces/química , Inyecciones , Fosfatos/administración & dosificación , Fosfatos/farmacocinética , Radioisótopos de Fósforo/administración & dosificación , Radioisótopos de Fósforo/farmacocinética , Ratas Sprague-Dawley , Inducción de Remisión , Sodio/administración & dosificación , Sodio/farmacocinética , Resultado del Tratamiento , Orina/química
18.
Ann Oncol ; 6(9): 887-93, 1995 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-8624291

RESUMEN

BACKGROUND: From 1983 to 1990, 271 consecutive patients with stage I ovarian cancer entered two randomised trials, aimed at assessing the role of adjuvant chemotherapy after radical surgery in early stages of ovarian cancer. Trial I compared cisplatin (50 mg/m2 with repeated courses every 28 days for 6 cycles) to no further therapy in F.I.G.O. stage Ia & b Grade II-III patients; trial II compared cisplatin (same dose and schedule) to 32P in Iaii & bii and Ic patients. METHODS: Both studies were multicentric and centrally randomized. Treatment was allocated by phone and stratified by center. All patients satisfying major eligibility criteria (histological and grade, no previous neoplasms) were analysed according to treatment allocated by randomisation. RESULTS: With a median observation time of 76 months, cisplatin significantly reduced the relapse rate by 65% (HR = 0.35; 95% CI = 0.14-0.89, p = 0.028; Cox Model) in trial I and 61% (HR = 0.39; 95% CI = 0.19-0.77, p = 0.007; Cox Model) in trial II. Survival was not significantly different (trial I - Kaplan-Meier overall 5-year survival: cisplatin = 88%, control = 82%, HR = 1.15; 95% CI = 0.44-2.98; p = 0.773; Cox Model); trial II - overall 5-year survival: cisplatin = 81%, 32P = 79%, HR = 0.72; 95% CI = 0.37-1.43; p = 0.354; Cox model). In both studies the risk of dying after relapse increased for patients originally randomized to the cisplatin arms: in trial I, 6 of 7 patients in the cisplatin relapsed arm and died of tumor compared with 8 of 14 patients in the control arm. In trial II 11 of 12 patients on cisplatin, and 18 of 26 on 32P succumbed to tumor recurrence. CONCLUSION: Adjuvant cisplatin treatment in early ovarian cancer significantly prevents relapse in comparison to 32P in stage IC patients or to no immediate treatment in earlier stage women. The impact of cisplatin adjuvant treatment on survival remains, however, unclear.


Asunto(s)
Antineoplásicos/uso terapéutico , Compuestos de Cromo/uso terapéutico , Cisplatino/uso terapéutico , Neoplasias Ováricas/tratamiento farmacológico , Fosfatos/uso terapéutico , Adulto , Anciano , Antineoplásicos/administración & dosificación , Antineoplásicos/efectos adversos , Quimioterapia Adyuvante , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/efectos adversos , Cisplatino/administración & dosificación , Cisplatino/efectos adversos , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Estadificación de Neoplasias , Neoplasias Ováricas/mortalidad , Neoplasias Ováricas/patología , Fosfatos/administración & dosificación , Fosfatos/efectos adversos , Tasa de Supervivencia , Resultado del Tratamiento
19.
Curr Opin Obstet Gynecol ; 7(1): 53-6, 1995 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-7742517

RESUMEN

Although the cause of ovarian cancer is unknown, the risk of developing the disease increases with age. Postmenopausal uterine bleeding is assumed to be caused by endometrial cancer until proven otherwise by adequate cytologic or histologic sampling of the endometrium. Older women need to be educated as to the benefits of regular pelvic examinations and Papanicolaou smears.


Asunto(s)
Neoplasias de los Genitales Femeninos/terapia , Anciano , Anciano de 80 o más Años , Quimioterapia Adyuvante , Compuestos de Cromo/administración & dosificación , Compuestos de Cromo/uso terapéutico , Terapia Combinada , Neoplasias Endometriales/terapia , Femenino , Humanos , Inyecciones Intraperitoneales , Neoplasias Ováricas/tratamiento farmacológico , Neoplasias Ováricas/cirugía , Fosfatos/administración & dosificación , Fosfatos/uso terapéutico , Neoplasias del Cuello Uterino/terapia
20.
J Am Coll Surg ; 179(4): 401-6, 1994 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-7921388

RESUMEN

BACKGROUND: Adjuvant therapy with intraperitoneal (IP) chromic phosphate (P-32) instillation in both early and advanced carcinoma of the ovary requires adequate intra-abdominal distribution for maximum therapeutic benefit. Abdominal-pelvic computed tomographic (CT) scanning with water-soluble IP contrast to establish the absence of intra-abdominal adhesions prior to P-32 instillation has not been previously reported. STUDY DESIGN: Sixteen patients with carcinoma of the ovary who were offered IP P-32 therapy between January 1988 and December 1992 were retrospectively reviewed. Computed tomographic scans on 13 patients were reevaluated using a modification of Muggia and associates' distribution scoring system. RESULTS: Of the 16 patients, one had a negative second look operation for stage IIIc carcinoma of the ovary. The remaining 15 with stage I and II disease underwent at least a staging laparotomy, bilateral salpingo-oophorectomy, and omentectomy. The mean time from operation to IP P-32 attempt was 28 days with a range of 17 to 90 days. Adequate distribution was considered present in two of the three cases evaluated by technetium scanning and in four of the 13 cases studied by CT scanning. On review, 12 of 13 cases studied by CT scans revealed some areas of IP contrast exclusion and loculation. CONCLUSIONS: We suspect that uneven postoperative IP P-32 distribution is common and may be missed by two-dimensional imaging techniques such as technetium scanning or fluoroscopy.


Asunto(s)
Carcinoma/radioterapia , Compuestos de Cromo/uso terapéutico , Neoplasias Ováricas/radioterapia , Fosfatos/uso terapéutico , Adulto , Carcinoma/diagnóstico por imagen , Carcinoma/cirugía , Compuestos de Cromo/administración & dosificación , Terapia Combinada , Femenino , Humanos , Infusiones Parenterales , Persona de Mediana Edad , Neoplasias Ováricas/diagnóstico por imagen , Neoplasias Ováricas/cirugía , Fosfatos/administración & dosificación , Estudios Retrospectivos , Tomografía Computarizada por Rayos X , Resultado del Tratamiento
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