Desenvolvimento, validação e comparação de métodos analíticos para determinação de bloqueadores neuromusculares derivados de esteróides

García, Pedro López

doi:10.11606/t.9.2009.tde-26082009-154500

Cited by 3 publications

(9 citation statements)

References 31 publications

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“…Table 1 includes the LODs, LOQs for each analyte and demonstrates the linearity of the analytical method throughout the calibration range. All r 2 values were >0.98 and the confidence intervals for the gradient and for the ordinate at the source complied with the recommended acceptance criteria by García et al 19 After combining the data from the two analysts, the RSD of the method was <2% and a standard deviation of <1%.…”

Section: Methodssupporting

confidence: 74%

“…All r2 values were >0.98 and the confidence intervals for the gradient and for the ordinate at the source complied with the recommended acceptance criteria by García et al . 19 After combining the data from the two analysts, the RSD of the method was <2% and a standard deviation of <1%.…”

Section: Methodsmentioning

confidence: 96%

“…The RSD for extracting the tested metabolites and LODs and LOQs were determined using standard formulas. 19 …”

Section: Methodsmentioning

confidence: 99%

“…The relative recovery was made adding the same concentration of a solution of deionized water, phosphate buffer with a pH of 6.8 and 0.1% of sodium chloride, extracted and quantified using GC–MS. The RSD for extracting the tested metabolites and LODs and LOQs were determined using standard formulas 19 …”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Prenatal exposure to phthalates is associated with decreased anogenital distance and penile size in male newborns

Bustamante-Montes

Hernández‐Valero

Flores-Pimentel

et al. 2013

J Dev Orig Health Dis

105

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Reproductive effects from phthalate exposure have been documented mostly in animal studies. This study explored the association between prenatal exposure to phthalate metabolites, anogenital distance and penile measurements in male newborns in Toluca, State of Mexico. A total of 174 pregnant women provided urine samples for phthalate analysis during their last prenatal visit, and the 73 who gave birth to male infants were included in the study. The 73 male newborns were weighed and measured using standardized methods after delivery. After adjusting for creatinine and supine length at birth, significant inverse associations were observed between an index of prenatal exposure to total phthalate exposure and the distance from the anus to anterior base of the penis (β = −0.191 mm per 1 µg/l, P = 0.037), penile width (β = −0.0414, P = 0.050) and stretched length (β = −0.2137, P = 0.034); prenatal exposure to mono-2-ethylhexyl phthalate exposure was associated with a reduction in the stretched length of the penis (β = −0.2604, P = 0.050). Human exposure to phthalates is a public health concern, and the system most vulnerable to its potential effects seems to be the immature male reproductive tract.

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Section: Methodssupporting

confidence: 74%

Section: Methodsmentioning

confidence: 96%

“…The RSD for extracting the tested metabolites and LODs and LOQs were determined using standard formulas. 19 …”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Prenatal exposure to phthalates is associated with decreased anogenital distance and penile size in male newborns

Bustamante-Montes

Hernández‐Valero

Flores-Pimentel

et al. 2013

J Dev Orig Health Dis

105

View full text Add to dashboard Cite

show abstract

“…The thermal requirements of the insect are assessed using the thermal constant (K), expressed in degree days, which has been used for many years in studies predicting plant growth. The hypothesis is that the duration of development, influenced by temperature, is constant, with the sum of temperatures calculated above the temperature development threshold (Tb) [19][20][21]. Since insects are poikilothermic, i.e., adapt to the ambient temperature, this thermal constant also applies to their development [18].…”

Section: Introductionmentioning

confidence: 99%

Fertility Life Table, Thermal Requirements, and Ecological Zoning of Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae) in Brazil

Pereira

Diniz

Parra

2023

Insects

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The boll weevil, Anthonomus grandis grandis Boh., is the most important cotton pest in Central and South America. The biological characteristics and thermal requirements of boll weevils reared on an artificial diet were assessed at seven constant temperatures (18, 20, 22, 25, 28, 30, and 32 ± 1 °C) under laboratory conditions. These data were used to determine the ecological zoning for the pest in Brazil. The development time; oviposition period; the number of eggs produced; survival of eggs, larvae, and pupae; adult longevity; and sex ratio were recorded, and additional life table parameters were calculated. The total development duration ranged from 16.1 (32 °C) to 46.2 (18 °C) days. Temperature significantly affected the number of eggs laid per female (fecundity), with the highest number of eggs observed at 25 °C (251 ± 15.8). The parameters from the fertility life table indicated the greatest population growth at 25 °C and 28 °C. The net reproductive rate (R0) at these temperatures was 22.25 times higher than at 18 °C. Based on R0 and temperature, an ecological zoning of the pest was developed for Brazil. Brazilian regions with mean temperatures above 20 °C and below 30 °C are most favorable for the population growth of the boll weevil. The most suitable crop areas were found to be the north, midwest, and part of the northeast region, although the weevil can occur throughout Brazil if the host plants are available.

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Espectrofotometría derivada en la cuantificación de una mezcla binaria de metformina y sitagliptina en tabletas

Rincón-Jiménez¹,

Sanjuan-Hernández²,

Carrillo-Cedillo³

2023

ICBI

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En el análisis cuantitativo de una mezcla binaria de metformina (Met) y sitagliptina (Sgt) mediante la técnica de espectrometría derivada, se utiliza el método de punto de anulación de la primera o segunda derivada. Una de las ventajas de esta técnica es que la derivada mide la pendiente espectral y por ello la meseta de un espectro de absorción; el máximo y mínimo de la primera derivada corresponde a los puntos de inflexión del espectro y para el caso de la segunda derivada corresponde a la curvatura del espectro original. En este trabajo se estudió primeramente los métodos de extracción de principios activos en tabletas combinadas utilizadas para controlar la diabetes Mellitus tipo 2 con su posterior aplicación del método modificado de espectrofotometría de relación derivada con adición de estándar para la sitagliptina; esto se hace por la composición de la tableta (Sgt - Met 50 mg - 850 mg).

show abstract

Desenvolvimento, validação e comparação de métodos analíticos para determinação de bloqueadores neuromusculares derivados de esteróides

Cited by 3 publications

References 31 publications

Prenatal exposure to phthalates is associated with decreased anogenital distance and penile size in male newborns

Prenatal exposure to phthalates is associated with decreased anogenital distance and penile size in male newborns

Fertility Life Table, Thermal Requirements, and Ecological Zoning of Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae) in Brazil

Espectrofotometría derivada en la cuantificación de una mezcla binaria de metformina y sitagliptina en tabletas

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