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La pronación consciente es una de las herramientas utilizadas para reducir los ingresos a terapia intensiva (UTI) en la neumonía por COVID-19 con hipoxemia. Algunos pacientes no toleran estar en posición prono (intolerantes) y algunos que lo toleran no responden mejorando la saturación o su PO2. Presentamos una serie de 34 pacientes sometidos a pronación consciente; fueron tolerantes 18 (52,9%). Nueve pacientes pasaron a UTI (26,4%): 7 intolerantes (43,7%) y 2 tolerantes (11,1%) (p=0.038). No hallamos diferencias en la necesidad de ventilación mecánica y mortalidad entre tolerantes e intolerantes. De los 18 tolerantes se clasificó como respondedores a 10 pacientes (55,5%). No hubo diferencia estadísticamente significativa en los pases a UTI entre los respondedores y no respondedores. La pronación consciente es una herramienta factible en el paciente con neumonía por COVID-19 y nos permitió predecir el requerimiento de terapia intensiva entre aquellos intolerantes al método.

The prone positioning (PP) in awake patients is one of the tools to reduce the number of admissions to Intensive Care Unit (ICU) in cases of Covid-19 hipoxemic pneumonia. Some patients do not tolerate PP (intolerants) and others that tolerate it do not respond with improvement of PO2 or oxygen saturation. We present here a series of 34 patients who underwent PP. Eighteen of them tolerated PP (52,9%). Nine patients (26,4%) were admitted to ICU: 7 who had not tolerated PP (43,7%) and 2 who had tolerated PP (11,1%) (p= 0.038). We did not find differences in the need for mechanical ventilation and mortality between patients who tolerated and who did not tolerate PP. From those 18 who tolerated PP, 10 were classified as responders (55,5%). We did not find any significant statistical differences for admission to ICU between responders and non-responders. PP in awake patients is a feasible tool in cases of COVID-19 Pneumonia, and it allowed us to predict the requirements of ICU between those who were not tolerant to the method

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El estudio tuvo como objetivo determinar la efectividad de un Programa Educativo en el nivel de conocimientos sobre prevención de cáncer de cuello uterino en estudiantes de la I.E. “Edelmira del Pando", fue de nivel aplicativo, tipo cuantitativo, método cuasiexperimental y de corte transversal. La población estuvo conformada por 80 estudiantes de la I.E. “Edelmira del Pando” que cursaban el 5to año de Secundaria. El instrumento fue un cuestionario y la técnica la encuesta. Conclusiones: El programa educativo fue efectivo en el incremento del nivel de conocimientos sobre prevención del cáncer de cuello uterino en estudiantes de la I.E. “Edelmira del Pando” después de aplicarlo. El nivel de conocimientos sobre prevención primaria del cáncer de cuello uterino en estudiantes de la I.E. la mayoría fue medio y después de la aplicación del programa educativo fue alto referido a que identifican la causa principal del cáncer de cuello uterino a la infección de virus del papiloma humano y también identifican los factores de riesgo. El nivel de conocimientos sobre prevención secundaria fue de medio antes y de alto después de la aplicación del programa educativo la mayoría referido a que la prueba de detección temprana del cáncer de cuello uterino es el Papanicolau y su frecuencia de esta prueba.

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This paper explores the degradation of a model pollutant, bisphenol A, by an advanced oxidation process that combines sonolysis, Fe(2+), and TiO(2) in a photoassisted process. Experiments were done under saturated oxygen conditions. The effect of different Fe(2+) (0.56 and 5.6 mg/L) and TiO(2) (10 and 50 mg/L) concentrations was investigated on both the elimination and mineralization of the pollutant. A pronounced synergistic effect that led to the complete and rapid elimination of dissolved organic carbon (DOC) was observed even at low catalyst loadings. In this system, almost a complete removal of DOC (93%) was observed after 4 h using 10 and 5.6 mg/L of TiO(2) and Fe(2+), respectively, whereas at the same time, only 5, 6, and 22% of DOC was removed by an individual process alone (TiO(2) photocatalysis, ultrasound, and photo-Fenton, respectively). In this system, ultrasound has the principal role of eliminating the initial substrate and providing hydrogen peroxide for the photocatalytic systems, while photo-Fenton and TiO(2) photocatalysis are mainly responsible for the transformation of the intermediates in CO(2) and H(2)O. The role of H(2)O(2) generated from the sonochemical process is also discussed.

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OBJECTIVE: To evaluate the effect of different fractions of Black Maca (Lepidium meyenii), obtained from the hydroalcoholic extract, on spermatogenesis. DESIGN: Animal study. SETTING: Animal and laboratory facilities at a university. ANIMAL(S): Forty two adult male rats from the Holtzman strain (3 months old). INTERVENTION(S): Hydroalcoholic extract of Black Maca was partitioned with the following solvents: petroleum ether, chloroform, ethyl acetate, n-butanol, and water to obtain each fraction. Forty-two rats were divided in different groups according the fraction administered and vehicle. The hydroalcoholic extract of Black Maca and its fractions and vehicle were given orally by gavage for 7 days. MAIN OUTCOME MEASURE(S): Daily sperm production, epididymal sperm count, and sperm count in the vas deferens. RESULT(S): Daily sperm production was higher in the ethyl acetate group compared with all other groups. The epididymal sperm count was higher in rats treated with ethyl acetate fraction compared with rats treated with vehicle (control), petroleum ether, n-butanol, or water fractions. The sperm count in vas deferens was lower in rats treated with ethyl acetate, petroleum ether, or water fractions compared with the control group; thus, the sperm count in vas deferens in rats treated with chloroform and n-butanol fractions was higher than in the petroleum ether group. CONCLUSION(S): The greatest effect on spermatogenesis was observed in the ethyl acetate fraction from the hydroalcoholic extract of Black Maca, suggesting that the compounds related to the beneficial effect on sperm production of Black Maca are presented in this fraction. Antioxidant components could play a role in the effect of increased epididymal sperm concentration observed in the model.

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Lepidium meyenii (Brassicaceae), known as Maca, is a Peruvian hypocotyl that grows exclusively between 4000 and 4500 m above sea level in the central Andes. Maca is traditionally employed in the Andean region for its supposed fertility-enhancing properties. The study aimed to test the hypothesis that different ecotypes of Maca (Red, Yellow and Black) after short-term (7 days) and long-term (42 days) treatment affects differentially spermatogenesis adult rats. After 7 days of treatment with Yellow and Red Maca, the length of stage VIII was increased (P<0.05), whereas with Black Maca stages II-VI and VIII were increased (P<0.05). Daily sperm production (DSP) was increased in the group treated with Black Maca compared with control values (P<0.05). Red or Yellow Maca did not alter DSP and epididymal sperm motility was not affected by treatment with any ecotype of Maca. After 42 days of treatment, Black Maca was the only ecotype that enhanced DSP (P<0.05). Moreover, Black Maca was the only that increased epididymal sperm motility (P<0.05). In relation to the control group, Red Maca did not affect testicular and epididymal weight nor epididymal sperm motility and sperm count; however, prostate weight was reduced (P<0.05). Black or Yellow Maca did not affect prostate weight. In conclusion, there were differences in the biological response of the three ecotypes of Maca (Yellow, Red and Black). Black Maca appeared to have more beneficial effect on sperm counts and epididymal sperm motility.

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BACKGROUND: Epidemiological studies have found that consumption of cruciferous vegetables is associated with a reduced risk of prostate cancer. This effect seems to be due to aromatic glucosinolate content. Glucosinolates are known for have both antiproliferative and proapoptotic actions. Maca is a cruciferous cultivated in the highlands of Peru. The absolute content of glucosinolates in Maca hypocotyls is relatively higher than that reported in other cruciferous crops. Therefore, Maca may have proapoptotic and anti-proliferative effects in the prostate. METHODS: Male rats treated with or without aqueous extracts of three ecotypes of Maca (Yellow, Black and Red) were analyzed to determine the effect on ventral prostate weight, epithelial height and duct luminal area. Effects on serum testosterone (T) and estradiol (E2) levels were also assessed. Besides, the effect of Red Maca on prostate was analyzed in rats treated with testosterone enanthate (TE). RESULTS: Red Maca but neither Yellow nor Black Maca reduced significantly ventral prostate size in rats. Serum T or E2 levels were not affected by any of the ecotypes of Maca assessed. Red Maca also prevented the prostate weight increase induced by TE treatment. Red Maca administered for 42 days reduced ventral prostatic epithelial height. TE increased ventral prostatic epithelial height and duct luminal area. These increases by TE were reduced after treatment with Red Maca for 42 days. Histology pictures in rats treated with Red Maca plus TE were similar to controls. Phytochemical screening showed that aqueous extract of Red Maca has alkaloids, steroids, tannins, saponins, and cardiotonic glycosides. The IR spectra of the three ecotypes of Maca in 3800-650 cm (-1) region had 7 peaks representing 7 functional chemical groups. Highest peak values were observed for Red Maca, intermediate values for Yellow Maca and low values for Black Maca. These functional groups correspond among others to benzyl glucosinolate. CONCLUSIONS: Red Maca, a cruciferous plant from the highland of Peru, reduced ventral prostate size in normal and TE treated rats.

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Informa sobre la implementación de la tecnología de remoción de arsénico bajo irradiación solar (RAOS), comparando los resultados con los obtenidos bajo irradiación con luz ultravioleta (UV) de una lámpara

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