Incidencia del perímetro abdominal en la resistencia a esfuerzos intermitentes de universitarios físicamente activos / Incidence of abdominal perimeter in endurance to intermittent efforts by physically active university students

Introducción: El perímetro abdominal y la resistencia a esfuerzos intermitentes, reflejada en el VO2máx, son dos grandes indicadores; el primero del riesgo cardiovascular y el segundo de la capacidad aeróbica máxima. Este estudio permitirá determinar si las mediciones del perímetro abdominal tienen relación con la capacidad del sujeto de responder a esfuerzos intermitentes. Objetivo: Determinar la asociación entre el perímetro de cintura y la resistencia a esfuerzos intermitentes reflejada en el VO2máx. Métodos: Los participantes fueron 91 hombres y 22 mujeres estudiantes de la Licenciatura en Educación Física, Recreación y Deportes de la Universidad de Pamplona. Para la valoración de la resistencia intermitente se empleó el test de fitness intermitente 30-15 (30-15 ITF) con el cual se determinó el VO2máx. Se realizó la toma del perímetro de cintura teniendo en cuenta los criterios de la Federación Internacional de Diabetes. La tabulación y análisis de datos se llevó a cabo en el paquete estadístico PSPP, con la prueba de normalidad de Kolmogorov - Smirnov para hombres y Shapiro - Wilk para mujeres, y el coeficiente correlacional de Spearman (p < 0,05) (valor p de 0,05). Resultados: Se encontró una asociación negativa entre las variables perímetro abdominal e indicador de resistencia a esfuerzos intermitentes VO2máx, en hombres (r = -0,17) y en mujeres (r = 0,09), no obstante, para ambos sexos esta relación no fue estadísticamente significativa (p < 0,05). Conclusión: Se concluye que el perímetro abdominal no está relacionado de forma significativa con la resistencia a esfuerzos intermitentes en universitarios físicamente activos(AU)

Introduction: The abdominal perimeter and endurance to intermittent efforts reflected in VO2max are two major indicators; the first for cardiovascular risk and the second for maximum aerobic capacity. This study will make it possible to determine whether abdominal perimeter measurements are related to the subject's ability to respond to intermittent efforts. Objective: Determine the association between the abdominal perimeter and the endurance to intermittent efforts reflected in the VO2max. Methods: The participants were 91 men and 22 female students of the Bachelor's Degree in Physical Education, Recreation and Sports of the University of Pamplona. For the assessment of intermittent endurance, the intermittent fitness test 30-15 (30-15 ITF) was used with which the VO2max was determined. The abdominal perimeter was taken taking into account the criteria of the International Diabetes Federation. The tabulation and analysis of data was carried out in the PSPP statistical package, applying the Kolmogorov-Smirnov normality test for men and Shapiro-Wilk for women, and, Spearman's correlational coefficient (p < 0,05) (p-value of 0,05). Results: A negative association was found between the variables abdominal girth and the indicator of endurance to intermittent efforts VO2max, in men (r = -0,17) and in women (r = 0,09), however, for both sexes, this relationship was not statistically significant (p < 0,05). Conclusion: It is concluded that, the abdominal perimeter is not significantly related to resistance to intermittent efforts in physically active university students(AU)

Curative Efficacy of Rituximab for ITP Patients with Different Sensitivity to Hormone / 中国实验血液学杂志

OBJECTIVE@#To investigatc the curative efficacy of low dose rituximab for glucocorticoid ineffective on dependent ITP patients and its relation with sensitivity to glucocorticoid so as to provide reference basis for rational use of drugs in clinical treatmant.@*METHODS@#Seventy-ninth ITP patients enrolled in this study included the glucocorticoid-ineffective patients (19 cases) and glucocorticoid-dependent patients (60 cases). All ITP patients were treated with regimen consisted of high dose dexamethasone plus low dose rituximab (dexal-methasone 40 mg/d for 4 days per os, ritaximab 100 mg by intravenous infusion at D7, 14, 21 and 28 respectively). The patients after treatment were followed-up for 12 month, and the relation of patients sensitivity to glucocorticoid with therapentic response of rituximab was analyzed. The changes of Treg cell ratio and BAFF, IL-2 and sCD40L levels before and after treatment were detected by flow cytometry and ELISA respectively.@*RESULTS@#The overall response rate (ORR) of patients treated with above- mentioned regemen at 1, 3, 6 and 12 months after treatment was 79.7% (63/79), 69.6% (55/79), 63.3% (50/79) and 60.8% (48/79) respectivcly, out of which the ORR of glucocorticoid ineffective and glucocorticoid-dependent ITP patients treated with above-mentioned regimen at 1, 3, 6 and 12 months after treatment was 47.4% (9/19) vs 90.0% (54/60), 36.8% (7/19) vs 80.0% (48/60), 21.1% (4/19) vs 76.7% (46/60), 21.1% (4/19) vs 73.3% (44/60), and the difference between 2 groups was statistically significant. The detection of T reg cell showed that the T reg cell ratio in glucocorticoid- ineffective and dependent patients at 1, 3, 6 and 12 months after treatment was (1.70±0.43)% vs (3.47±0.72)%, (1.66±0.33)% vs (4.29±0.91)%, (1.71±0.37)% vs (4.44±0.97)%, (3.36±0.54)% vs (4.29±1.04)%, respectively. The detection of cytokines showed that the levels of BAFF, IL-2 and sCD40L in plasma of glucocorticoid-dependent patients at 1 month after treatment significanlly decreased (P＜0.05), the levels of BAFF, IL-2 and sCD40L in plasma of glucocorticoid-ineffective patients although decreased at 1 mouth after treatment, but there was no statistical difference as compared with glucocosticoid-depenment patients.@*CONCLUSION@#The treatment of glucocorticoid-dependent ITP patients with rituximab is more effective. The regulatory effect of rituximab on the T-reg cells, BAFF, IL-2 and sCD40L may be one of its mechanisms.

Changes of DC Subsets and CD80 and CD86 Expression in Peri-pheral Blood of Patients with ITP and Their Correlation with Efficacy of Dexamethasone Treatment / 中国实验血液学杂志

OBJECTIVE@#To analyze the changes of DC subsets and the expression of CD80 and CD86 in peripheral blood of ITP patients and their correlation with dexamethasone efficacy.@*METHODS@#Peripheral blood sample of 80 cases of ITP and 20 normal controls from June 2015 to June 2017 in our hospital were retrospectively analyzed. The specific distribution of DC subsets in the peripheral blood of all the subjects was detected by flow cytometry, and the expressions of CD80 and CD86 were detected by ELISA.@*RESULTS@#The proportion of DC2 in DC subsets of ITP patients before treatment was significantly higher than that in normal control group (P<0.05). The proportion of DC2 in DC subset of ITP patients was still significantly higher than that of the control group (P<0.05). The level of CD80 expression on DC1 and DC2 in ITP patients before treatment was significantly higher than that in the normal control group (P<0.05), and the expression level of CD86 on DC2 was significantly higher than that of the normal control group (P<0.05). Both IL-2 and IFN- γ levels in the patients before the treatment were significantly higher than those in the normal control group (P<0.05), and the expression levels after treatment with dexamethasone decreased significantly. Before treatment, both IL-4 and IL-10 levels in ITP patients were significantly lower than those in the normal control group (P<0.05), and their expression levels after treatment with dexamethasone significantly increased (P<0.05).@*CONCLUSION@#The incidence of ITP patients closely relates with the level and dysfunction of DC subsets in peripheral blood and the expression levels of IL-2, IL-4, IL-10, IFN- γ, which significantly correlates with the efficacy of dexamethasone.

Effect of Decitabine on Megakaryocyte Culture of Steroid-resistant ITP Patients / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To investigate the effect of decitabine and plasma of ITP patients on in vitro cultrue of megakaryocytes in bone marrow of steroid-resistant ITP patients.</p><p><b>METHODS</b>Bone marrow mononuclear cells were isolated from 20 steroid-resistant ITP patients, both methyl cellulose semisolid culture system (to observe and count the number of megakaryocytes colony-forming unit) and liquid culture system (to analysis the expression rate of CD41a(+) cells) were used for megakaryocyte cultrue. The experiments were divided into 4 groups according to the different components of the culture system, group A was control, group B was added with decitabine, group C with ITP plasma, group D with both decitabine and ITP plasma, and the rest of the culture components were the same in the 4 groups except the above-mentioned materials. Morphology of megakaryocytes was observed by inverted and light microscopy. The expression rate of CD41a⁺ cells in culture was analysed by flow cytometric.</p><p><b>RESULTS</b>Different concentration of decitabine showed different effect on megakaryocyte growth of steroid-resistant ITP patients and the optimal concentration to differentiate into megakaryocyte for bone marrow mononuclear cells is 3.0 µmol/L. Compared with group A, both megakaryocyte colony forming units (CFU) and expression rate of CD41a⁺ cells in group B were statistically significantly higher (P < 0.05). As compared with group A, the megakaryocyte colony-forming units in group C decreased with statistically significant difference, while compared with group C, the megakaryocyte colony-forming units in group D obviously increased with statistically significant difference.</p><p><b>CONCLUSIONS</b>Decitabine is able to induce bone marrow mononuclear cells of steroid-resistant ITP patients to differentiate into megakaryocyte and the optimal concentration is 3.0 µmol/L; ITP plasma is able to inhibit the megakaryocyte growth of steroid-resistant ITP patients.</p>

Vasodilating effect and its mechanism of ethanol on isolated rat thoracic aorta at different resting tension / 中国应用生理学杂志

<p><b>AIM</b>To investigate the vasodilating effect and its mechanism of ethanol on isolated rat thoracic aorta at different resting tension.</p><p><b>METHODS</b>The tension of the isolated Sprague-Dawley rat thoracic aorta rings perfused with different concentrations of ethanol was measured using organ bath technique.</p><p><b>RESULTS</b>At different resting tension (1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 g), ethanol (0.1-7.0 per thousand) caused a concentration-dependent relaxation on endothelium-denuded aortic rings precontracted with KCl (6 x 10(-2)mol/L) or phenylephrine (PE, 10(-6) mol/L), and the vasodilating effect was the most potent when the aortic rings were at the resting tension of 3 g. Ethanol had much less vasodilating effect on endothelium-intact aortic rings. Ethanol at 3 per thousand (the maximum-effect concentration) inhibited the CaCl2 induced contraction and downward shifted concentration-response curve of endothelium-denuded aortic rings pre-contracted with KCI or PE at the resting tension of 3 g. Incubation of aorta with ruthenium red (10(-5) mol/L) or heparin (50 mg/L) decreased the vasodilating effect of ethanol (3.0 per thousand) on endothelium-denuded aorta precontracted with PE at the resting tension of 3 g.</p><p><b>CONCLUSION</b>Ethanol induces endothelium-independent relaxation on rat thoracic aorta, which is concerned with the resting tension. This effect of ethanol may be mediated by the inhibition of voltage-dependent and receptor-operated Ca2+ channels in the vascular smooth muscle cells. The inhibition of the ryanodine receptor and trisphosphate inositol (IP3) pathway may also contribute to this effect.</p>

Dapsone in treatment of chronic idiopathic thrombocytopenic purpura in adults.

BACKGROUND: When a patient is steroid-dependant, a currently available strategy in chronic idiopathic thrombocytopenic purpura (ITP) is to follow a trial and error approach with any of the known drugs which has been found effective in the condition. OBJECTIVE: To evaluate the response of chronic ITP to dapsone, an inexpensive drug now reported to be effective in the disease. DESIGN : A controlled trial of abstinence and rechallenge type. SUBJECTS: Eight subjects with chronic ITP. INTERVENTIONS: Phase I - Intake of 100 mg of dapsone daily until response (in form of rise of platelet count in blood), Phase II - Above followed by drug abstinence, minimum for four weeks, and then rechallenge with the drug. MAIN OUTCOME MEASURES: Platelet counts during various phases viz during drug intake, withdrawal and rechallenge. RESULTS: Four (50%) patients responded to treatment. The mean pre-dapsone and post-dapsone platelet counts of blood were 29.6 x 10(9)/l and 142.5 x 10(9)/l respectively during the first phase of trial. The rechallenge was done in five patients following withdrawal of drug and the mean values of platelet count before and after rechallenge were 32.2 x 10(9)/l and 83 x 10(9)/l respectively. There was a remarkable response in two patients; one is now off the drug and the other on a maintenance dose of 50 mg of dapsone daily. CONCLUSION: Dapsone caused significant rise of platelet count in some patients of chronic ITP. It can be tried as an alternative to other second-line drugs in chronic ITP.