Índice de inmunidad-inflamación sistémica (IIS) como marcador pronóstico de mortalidad en pacientes con COVID-19.

OBJECTIVE: To determine if the systemic immune-inflammation index (SII) is a prognostic marker of mortality in COVID-19 patients. METHOD: Retrospective study that included patients admitted to a general hospital in Mexico City with diagnostic of COVID-19, confirmed by quantitative polymerase chain reaction from nasopharyngeal swab specimens in addition to characteristic symptomatology and computerized thoracic tomography imaging. Upon admission an hematic biometry was taken to calculate the SII (neutrophils × platelets/lymphocytes). The optimal cut-off point was determined from a ROC curve; the chi-square test was used to evaluate the association of SII with mortality, the strength of the association was estimated through the odds ratio (OR) and, finally, a multivariate binary logistic regression analysis was performed. RESULTS: 140 individuals were included, 86 (61.4%) men and 54 women (38.6%), the mean age of patients was 52 (± 13.81) years old. The best prognostic cut-off point found was 2332.30 × 109 (area under the curve: 0.68; 95% confidence interval [95% CI]: 0.59-0.77; p < 0.05). The OR was 3.78 (95% CI: 1.83-7.82; p < 0.05). CONCLUSIONS: We demonstrated that the SII is an easily available tool, effective and a prognostic marker of mortality in hospitalized COVID-19 patients.

OBJETIVO: Determinar si el índice de inmunidad-inflamación sistémica (IIS) es un marcador pronóstico de mortalidad en pacientes con COVID-19. MÉTODO: Estudio retrospectivo que incluyó pacientes que ingresaron con diagnóstico de COVID-19 a un hospital general de la Ciudad de México, confirmado mediante prueba de reacción cuantitativa en cadena de la polimerasa con transcriptasa inversa de muestras de hisopado nasofaríngeo, además de la sintomatología característica y los hallazgos de la tomografía computarizada de tórax. A su ingreso se les realizó biometría hemática para el cálculo del IIS (neutrófilos × plaquetas/linfocitos). Mediante una curva ROC se determinó el punto de corte óptimo del IIS. Para evaluar la asociación del IIS con la mortalidad se utilizó la prueba de ji al cuadrado, la fuerza de la asociación con la razón de momios (OR, odds ratio) y se realizó un análisis multivariado de regresión logística binaria. RESULTADOS: Se incluyeron 140 individuos, de los cuales 86 (61.4%) eran hombres y 54 (38.6%) mujeres, con una media de edad de 52 (± 13.81) años. El mejor punto de corte pronóstico fue 2332.30 × 109 (área bajo la curva: 0.68; intervalo de confianza del 95% [IC95%]: 0.59-0.77; p < 0.05). La OR fue de 3.78 (IC95%: 1.83-7.82; p < 0.05). CONCLUSIONES: El IIS mostró ser una herramienta de fácil disponibilidad y un marcador pronóstico de mortalidad al ingreso en pacientes hospitalizados con COVID-19.

Prevalencia de glucosa alterada en ayuno y dislipidemia entre pacientes mexicanos con VIH naïve a tratamiento antirretroviral.

BACKGROUND: Metabolic complications have become more relevant in the care of patients with HIV. However, little is known about the incidence and risk factors for these disorders among HIV-infected antiretroviral treatment naïve (ARTn) patients. OBJECTIVE: To recognize the prevalence of Impaired Fasting Glucose (IFG) and dyslipidemia among HIV-infected ARTn Mexican individuals and identify associated risk factors. METHOD: A retrospective study was conducted in HIV-1-infected ART-N patients, referred for attention to a general hospital in Mexico City, between 2009 and 2019. We collected information for anthropometric, clinical, biochemical and HIV status variables. RESULTS: We included 221 patients, 97% were males, mean age 30 years (interquartile range [IQR]: 25-38); median CD4 count was 250 cells/mm3 (IQR: 120.25-391) and median log10 HIV viral load was 4.69 HIV-1 RNA copies/ml (IQR: 3.64-5.25). Prevalence of IFG was 22.6% and was associated with overweight-obesity (odds ratio [OR]: 2.75; 95% confidence interval [95% CI]: 1.36-5.55; p-value < 0.05). Hypoalphalipoproteinemia was the most frequent dyslipidemia: 69.46%. An association between count CD4 < 250 and lower HDL cholesterol levels was found (OR: 3.23; 95CI%: 1.61-6.5; p-value < 0.05). CONCLUSIONS: IFG and dyslipidemia are highly prevalent among HIV-infected ART-naïve Mexican patients, therefore, screening for glucose and lipids abnormalities always should be considered among ARTn patients.

ANTECEDENTES: Las alteraciones metabólicas se han vuelto más relevantes en el cuidado de los pacientes con infección por el virus de la inmunodeficiencia humana (VIH). Existe poca información sobre estas alteraciones en pacientes naïve a tratamiento antirretroviral (nTAR). OBJETIVO: Identificar la prevalencia de glucosa alterada en ayuno y dislipidemia entre individuos mexicanos con VIH nTAR e identificar los factores asociados. MÉTODO: Estudio retrospectivo en pacientes con VIH nTAR valorados en un hospital general de la Ciudad de México de 2009 a 2019. Se recabaron datos antropométricos, clínicos, bioquímicos y relacionados con el estado del VIH. RESULTADOS: Se incluyeron 221 pacientes, el 97% hombres, con mediana de edad 30 años (rango intercuartil [RIC]: 25-38), cuenta de linfocitos CD4 250 células/mm3 (RIC: 120.25-391) y carga viral log10 4.69 copias/ml (RIC: 3.64-5.25) de VIH-1 ARN. La prevalencia de glucosa alterada en ayuno fue del 22.6% y presentó asociación con sobrepeso-obesidad (razón de momios [RM]: 2.75; intervalo de confianza del 95% [IC95%]: 1.36-5.55; p < 0.05). La dislipidemia más frecuente fue la hipoalfalipoproteinemia (69.46%), asociada con CD4 < 250 (RM: 3.23; IC95%: 1.61-6.5; p < 0.05). CONCLUSIONES: Las alteraciones en el metabolismo de los lípidos y de la glucosa son frecuentes entre individuos mexicanos con VIH nTAR; por lo tanto, es importante una adecuada evaluación antes de iniciar el tratamiento.

Epidemiología y mortalidad hospitalaria por evento vascular cerebral en un hospital de la Ciudad de México: estudio prospectivo de 2 años.

OBJECTIVE: To describe patient characteristics, case fatality rate, and assess predictors of in-hospital acute ischemic (IS) or hemorrhagic stroke (HS) mortality. METHOD: Adult patients with confirmed stroke were recruited from January 1st, 2018 to December 31st, 2019.Data collect included demographic and laboratory characteristics, risk factors, and clinical outcome. A binary logistic regression model with relative risk and 95% confidence interval was performed. RESULTS: A total of 172 patients were recruited; IS was present in 78.5% of patients. The mean of age was 75.27 ± 11.44 years in IS group and 71.62 ± 11.72 years in HS group. Hypertension was present in > 70% of patients in both groups; the in-hospital case fatality rate was 15.5% for IS and 21.5% for HS. Severe NIHSS score (> 13) was significantly associated with in-hospital mortality in both stroke types. CONCLUSIONS: Hypertension was the most common risk factor in patients with stroke. The in-hospital case fatality rate was lower to previously reported in Mexico. Nevertheless, it remains high compared to reported in developed countries. NIHSS scale was the strongest predictor of mortality. There is a need to develop more effective stroke management services in Mexico.

OBJETIVO: Describir las características y los factores pronósticos para mortalidad intrahospitalaria en pacientes con diagnóstico de evento vascular cerebral isquémico (EVCi) o hemorrágico (EVCh). MÉTODO: Se incluyeron 172 pacientes en el periodo del 1 de enero de 2018 al 31 de diciembre de 2019. Se recabaron características demográficas, de laboratorio y factores de riesgo. Se realizó un análisis de regresión logística binaria calculando el riesgo relativo y el intervalo de confianza al 95% para identificar las variables asociadas a la mortalidad. RESULTADOS: El 78.5% de los pacientes presentaron EVCi. La media de edad fue de 75.27 ± 11.44 años en el EVCi y de 71.62 ± 11.72 años en el EVCh. El antecedente de hipertensión se encontró en más del 70% de los pacientes en ambos tipos de EVC. La mortalidad hospitalaria fue del 15.5% en el EVCi y del 21.5% en el EVCh. Una puntuación grave (> 13) en la escala NIHSS (National Institutes of Health Stroke Scale) presentó asociación significativa con la mortalidad en ambos tipos de EVC. CONCLUSIONES: La hipertensión fue el factor de riesgo más común. La mortalidad hospitalaria fue menor que lo reportado previamente en México. La escala NIHSS fue el mejor predictor de mortalidad. Es necesario desarrollar estrategias para mejorar la atención de los pacientes con EVC en México.

Serum uric acid levels are associated with homeostasis model assessment in obese nondiabetic patients: HOMA and uric acid.

BACKGROUND: Hyperuricemia leads to insulin resistance, whereas insulin resistance decreases renal excretion of uric acid. The aim of this study was to evaluate whether there is a correlation between serum uric acid levels with homeostatic model assessment (HOMA) 1 in nondiabetic patients. METHODS: We evaluated 88 nondiabetic patients, in whom uric acid levels were measured, in all of them HOMA of ß-cell function (HOMA 1B) and HOMA of insulin resistance (HOMA 1IR) scores were performed. Uric acid and the HOMA 1 values were correlated using the Pearson coefficient. RESULTS: We did not find any correlation between uric acid levels with both HOMA 1B (r = 0.102, p = 0.343), nor with HOMA 1IR (r = 0.158, p = 0.117). When patients were analyzed by sex, we found a significant correlation with HOMA 1IR (0.278, p = 0.01), but not with HOMA 1B (0.138, p = 0.257) in women. We found a correlation with HOMA 1B in men (r = 0.37, p = 0.044), but not with HOMA 1IR: 0.203, p = 0.283. The analysis performed based on body mass index did not show correlation in the patients with normal weight, (HOMA 1B r = 0.08, p = 0.5, HOMA 1IR = 0.034, p = 0.793), nor in the patients who were overweight (HOMA 1B: r = 0.05, p = 0.76, HOMA 1IR r = 0.145, p = 0.43). However, a significant correlation between uricemia with both HOMA 1B (0.559, p < 0.001), and HOMA 1IR (0.326, p < 0.05), was observed in obese patients. CONCLUSION: Our results suggest that serum uric acid levels seem to be associated with insulin resistance in women, and in obese patients, but not in nonobese men. Uric acid also modifies ß-cell function in men and in obese patients.

Effect of losartan combined with amlodipine or with a thiazide on uric acid levels in hypertensive patients.

Hyperuricemia leads to endothelial dysfunction and insulin resistance, and has been associated with diseases such as hypertension. Antihypertensive drugs modify serum uric acid levels, however, few data are available about their combinations on uricemia. In this study we evaluate the effect of two combinations of losartan, with amlodipine or with hydrochlorothiazide, on serum uric acid levels in hypertensive patients. METHODS: A total of 60 hypertensive patients were randomized in two groups; group LA received losartan/amlodipine (100/5 mg) once a day, whereas LH group received losartan hydrochlorothiazide (100/12.5 mg) once a day for 3 months. In both groups serum uric acid levels were measured at the beginning and end of the study. Patients were evaluated monthly for blood pressure (BP) and adverse events. Statistical analysis was performed with a two-way analysis of variance (ANOVA) for repeated measures. RESULTS: All patients experienced a significant reduction of BP to the same extent (LA 155/94 to 123/79, LH 157/92 to 124/78 mmHg, p > 0.05). In the LA group, serum uric acid decreased from 6.5 ± 1.6 to 4.6 ± 1.3 mg/ml ( p = 0.0001), whereas in the LH group there was a nonsignificant increase from 5.82 ± 1.4 to 5.85 ± 1.5 mg/ml, ( p = 0.936). When both groups were compared, we found a significant reduction ( p < 0.00013) on serum uric acid levels in the LA group. CONCLUSIONS: Both combinations decrease BP values to the same extent, however, LA combination showed a reduction on serum uric acid levels, which may contribute to a reduction in the metabolic risk in hypertensive patients.

Beneficial effect of combination therapy using an angiotensin-converting enzyme inhibitor plus verapamil on circulating resistin levels in hypertensive patients with type 2 diabetes.

BACKGROUND: Resistin levels are strongly correlated with insulin resistance and vascular inflammation. Type 2 diabetic and hypertensive patients have higher circulating levels of resistin, which is associated with endothelial dysfunction. OBJECTIVE: To compare the effect of trandolapril (T) and its fixed-dose combination with verapamil (FDTV) on resistin levels in hypertensive, type-2 diabetic patients. METHODS: Forty type-2 diabetic patients with never-treated hypertension were randomly assigned to two groups. One group received FDTV 2 mg/180 mg once per day; the other group received T 2 mg once per day. Study drugs were administered for three months in both groups. Resistin levels were measured using ELISA at the beginning of the study and at study end. Patients were evaluated monthly for blood pressure, fasting serum glucose levels and adverse events. Statistical analysis was performed using ANOVA. RESULTS: All patients experienced a significant reduction in blood pressure. Both therapeutic regimens reduced resistin levels; however, FDTV treatment resulted in a greater decrease in resistin levels (mean [± SD] 25.5±13 ng/mL to 17.2±10 ng/mL) when compared with T treatment (22.4±12 ng/mL to 18.5±8 ng/mL) (P<0.05). None of the patients experienced an adverse event. CONCLUSION: Results showed that FDTV resulted in a greater reduction in resistin levels than T treatment alone.