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1.
Prev Sci ; 24(1): 15-26, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35788868

RESUMEN

This study experimentally tested risk behavior outcomes of Connecting, a low-cost, self-directed, family-based prevention program for families with youth placed in their care by state child welfare agencies. Families caring for youth aged 11 to 15 years from across Washington State were recruited and randomly assigned to either the self-directed program with supplemental support (n = 110) or a treatment as usual control condition (n = 110). Program materials included a workbook with family activities and DVDs with video clips. Over the 10-week program, participants received motivational support contacts to prompt program completion. Survey data were collected from youth and their caregivers at baseline, directly following intervention, then again at 12 and 24 months post-intervention. Intervention effects at 24-month follow-up were found to be moderated by age. Among 16- to 17-year-old youth at follow-up, there was an intervention benefit yielding reduced use of any substance (OR = 0.71, 95% CI [0.54, 0.93], p = 0.01) and nonviolent delinquency (OR = 0.73, 95% CI [0.57, 0.94], p = 0.02). There was no intervention effect among adolescents aged 13 to 15 years for any risk behaviors. This evidence suggests that the developmental timing of a self-directed, family-focused preventive intervention for youth and their caregivers in the foster care system may influence risk behaviors that typically emerge in late adolescence. ClinicalTrials.gov Identifier: NCT03157895.


Asunto(s)
Cuidadores , Cuidados en el Hogar de Adopción , Niño , Humanos , Adolescente , Asunción de Riesgos , Washingtón
2.
Child Youth Serv Rev ; 1502023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37234457

RESUMEN

This study assessed secondary outcomes of Connecting, a low-cost, self-directed, family-based prevention program for families with youth placed in their care by state child welfare agencies. Families caring for youth aged 11 to 15 years within Washington State were recruited and randomly assigned into either the Connecting program (n = 110) or a treatment-as-usual control condition (n = 110). The program included a 10-week sequence of self-directed family activities and DVDs with video clips. Survey data were collected from caregivers and youth at baseline, immediately post-intervention, and at 12 and 24 months post-intervention; placement data was collected from the child welfare department as well. Intention-to-treat analyses focused on 5 classes of secondary outcomes at 24 months post-intervention: caregiver-youth bonding, family climate, youth risk behavior attitudes, youth mental health, and placement stability. There were no intervention effects in the full sample. In subgroup analyses, among older youth (ages 16 - 17) but not younger youth (ages 13 - 15), the Connecting condition (vs. controls) yielded more frequent caregiver-reported bonding communication, bonding activities, warmth, and positive interactions, as well as less favorable youth attitudes towards early initiation of sexual behavior and substance use, and fewer youth self-injurious thoughts. Consistent with the social development model, the divergent outcomes between younger and older youth suggests Connecting's driving mechanisms involve social processes that undergo critical shifts between early and mid-adolescence. Overall, the Connecting program showed promise in older youth for long-term promotion of caregiver-youth bonding, healthy behaviors, and mental health, but did not demonstrate long-term efficacy in facilitating stable or permanent placement of youth in care.

3.
Pharmacogenomics J ; 18(3): 391-397, 2018 05 22.
Artículo en Inglés | MEDLINE | ID: mdl-28696420

RESUMEN

Mothers with a CYP2D6 ultrarapid metabolizer phenotype may expose their infants to risk of adverse events when taking codeine while breastfeeding, by producing more of the active metabolite, morphine. Pharmacogenetic testing may be a valuable tool to identify such mothers, but testing can be costly. The objective of the study was to determine the incremental costs of genotyping to avert neonatal adverse events during maternal pharmacotherapy. A cost-effectiveness analysis, using a decision model, was performed with a hypothetical cohort of prenatal subjects. Parameter estimates, costs and ranges for sensitivity analyses were ascertained from the literature and expert opinion. Sensitivity analyses were conducted to assess the robustness of the results. Probabilistic sensitivity analysis revealed an incremental cost-effectiveness (ICER) of $10 433 (Canadian dollars) for genotyping compared to no genotyping per adverse event averted. Results were sensitive to hospital admission costs. The ICER was lower when evaluating only subjects having caesarean deliveries or those from ethnic populations known to have a high prevalence of ultra-rapid metabolizers. Although genotyping to guide pharmacotherapy was not cost saving, the cost to avert an infant adverse event may represent good value for money in specific populations. With a growing demand for personalized medicine, these findings are relevant for decision makers, clinicians and patients.


Asunto(s)
Citocromo P-450 CYP2D6/genética , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/genética , Dolor/tratamiento farmacológico , Periodo Posparto/genética , Lactancia Materna/economía , Canadá , Codeína/efectos adversos , Análisis Costo-Beneficio , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/economía , Femenino , Pruebas Genéticas/economía , Técnicas de Genotipaje/economía , Humanos , Lactante , Morfina , Dolor/economía , Dolor/genética , Dolor/patología , Periodo Posparto/efectos de los fármacos , Embarazo
4.
J Viral Hepat ; 25(2): 144-151, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-28984012

RESUMEN

Treatment with ombitasvir/paritaprevir/ritonavir and dasabuvir, with or without ribavirin (OPrD ± RBV), was the first interferon-free direct-acting antiviral for hepatitis C virus (HCV) introduced to Israel's national basket of health services in February 2015. Patients with HCV genotype 1 (GT1) and advanced fibrosis (F3-F4) were eligible for treatment in 2015. This study aimed to characterize patients initiating OPrD ± RBV and assess sustained virological response (SVR). A retrospective cohort study was performed using the database of Maccabi Healthcare Services (MHS), a 2-million-member health plan in Israel. The study population included adults who initiated OPrD ± RBV through December 2015 per health basket criteria. A gap in medication fills (>14 days between a fill's run-out and the next fill) was used to estimate adherence. SVR was defined by the viral tests at least 12-week post-treatment. The study population consisted of 403 patients (56.3% male), with a mean age of 60.7 years (SD 11.0). Overall, 71.0% were naïve to prior HCV treatment, and 95.6% were treated with a 12-week regimen. A total of 348 patients (86.4%) completed the regimen in the usual time frame (highly adherent), whereas 8.2% completed with a gap, and 4.7% purchased less than the recommended dose. SVR rates overall and among highly adherent patients were 395/403 (98.0%; 95% CI 96.1-99.1) and 346/348 (99.4%; 95% CI 97.9-99.9), respectively. GT1b patients on 12-week regimens attained SVR rates of 194/196 (fibrosis F3) and 170/176 (cirrhosis). After a first year of provision of OPrD ± RBV with good adherence, high SVR rates were achieved in various patient subgroups and comorbidities.


Asunto(s)
Antivirales/uso terapéutico , Hepacivirus/efectos de los fármacos , Hepatitis C/tratamiento farmacológico , Respuesta Virológica Sostenida , 2-Naftilamina , Adulto , Anciano , Anilidas/administración & dosificación , Anilidas/uso terapéutico , Antivirales/administración & dosificación , Carbamatos/administración & dosificación , Carbamatos/uso terapéutico , Ciclopropanos , Quimioterapia Combinada , Femenino , Humanos , Lactamas Macrocíclicas , Compuestos Macrocíclicos/administración & dosificación , Compuestos Macrocíclicos/uso terapéutico , Masculino , Persona de Mediana Edad , Prolina/análogos & derivados , Estudios Retrospectivos , Ritonavir/administración & dosificación , Ritonavir/uso terapéutico , Sulfonamidas/administración & dosificación , Sulfonamidas/uso terapéutico , Uracilo/administración & dosificación , Uracilo/análogos & derivados , Uracilo/uso terapéutico , Valina
5.
BJOG ; 125(12): 1550-1556, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29790255

RESUMEN

OBJECTIVE: To evaluate the risk for major malformations following first-trimester exposure to vaginal azoles. DESIGN: A population-based retrospective cohort study of women exposed to vaginal azoles from the first day of the last menstrual period until the 90th gestational day. SETTING: A combination of four computerised databases: medications, birth, infant hospitalizations, and pregnancy terminations. POPULATION: All women who gave birth or underwent a pregnancy termination at Soroka Medical Center, Beer-Sheva, Israel, between 1999 and 2009. METHODS: Crude and adjusted relative risks for major congenital malformations and for specific malformations according to organ systems were calculated using a multivariate negative binomial regression. Potential confounders were assessed and controlled for included parity, maternal age, ethnicity, maternal diabetes, smoking, and year of birth or pregnancy termination. Additional analysis using propensity score matching was performed for selected malformations. MAIN OUTCOME MEASURES: Major malformations as well as specific malformations according to organ systems. RESULTS: Of 101 615 pregnancies, 1993 (1.96%) were exposed to clotrimazole vaginal tablets and 313 (0.31%) to miconazole vaginal tablets during the first trimester of pregnancy. No association was found between first-trimester exposure to clotrimazole and major or specific malformations. An association was found between miconazole exposure and musculoskeletal malformation in general and other congenital musculoskeletal anomalies in particular. However, no association was detected when propensity score matching was used. CONCLUSIONS: Intrauterine exposure to vaginal azoles during the first trimester of pregnancy was not associated with either major or specific malformations according to organ systems. TWEETABLE ABSTRACT: First-trimester exposure to vaginal azoles is not associated with either major or specific malformations.


Asunto(s)
Anomalías Inducidas por Medicamentos/epidemiología , Antifúngicos/uso terapéutico , Azoles/uso terapéutico , Candidiasis Vulvovaginal/tratamiento farmacológico , Anomalías Inducidas por Medicamentos/etiología , Adolescente , Adulto , Antifúngicos/efectos adversos , Azoles/efectos adversos , Estudios de Cohortes , Bases de Datos Factuales , Femenino , Humanos , Recién Nacido , Israel/epidemiología , Persona de Mediana Edad , Embarazo , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Primer Trimestre del Embarazo , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
6.
BJOG ; 124(11): 1664-1670, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28334503

RESUMEN

OBJECTIVE: To evaluate whether exposure to clomiphene citrate (CC) for ovulation induction is associated with major malformations overall or with specific fetal anomalies. DESIGN: We conducted a population-based retrospective cohort study. Exposure was defined as CC dispension from 2 months before conception through the first month of pregnancy. SETTINGS: Four databases were combined: medication, birth, hospitalization, and terminations of pregnancy. POPULATION: The study included all women in southern Israel who gave birth or underwent termination of pregnancy at Soroka Medical Center, from 1998 to 2009. METHODS: The rates of major malformations overall and six different subcategories of anomalies were evaluated. The crude odds ratio (OR) was calculated with a 95% confidence interval (95% CI). Subsequently the adjusted odds ratio (aOR) was calculated using multiple logistic regression models controlling for maternal age, pre-pregnancy diabetes, parity, ethnicity, the calendar year in which the birth/termination of pregnancy took place, smoking, and the use of gonadotropins and progesterone. MAIN OUTCOME MEASURES: Major malformations overall and specific fetal malformations by organ systems. RESULTS: Of 114 961 pregnant women, 1872 were exposed to CC. No association was detected between exposure to CC and rates of major malformations overall (aOR 1.08, 95% CI 0.88-1.32) or rates of subcategories of malformations. Exposure was not associated with anencephaly (aOR 2.27, 95% CI 0.44-11.71) or oesophageal atresia (aOR 3.681, 95% CI, 0.65-20.76). CONCLUSIONS: In this large population-based retrospective cohort study, exposure to CC was not associated with an increased risk of either rates of major malformations overall or rates of specific malformations. TWEETABLE ABSTRACT: An observational study: no increased risk for fetal malformations following exposure to clomiphene citrate.


Asunto(s)
Anomalías Inducidas por Medicamentos/epidemiología , Clomifeno/efectos adversos , Anomalías Congénitas/epidemiología , Fármacos para la Fertilidad Femenina/efectos adversos , Infertilidad Femenina/tratamiento farmacológico , Adolescente , Adulto , Clomifeno/uso terapéutico , Femenino , Fármacos para la Fertilidad Femenina/uso terapéutico , Humanos , Incidencia , Recién Nacido , Infertilidad Femenina/epidemiología , Israel/epidemiología , Embarazo , Resultado del Embarazo , Atención Prenatal/métodos , Estudios Retrospectivos , Adulto Joven
7.
BJOG ; 123(7): 1135-41, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26259808

RESUMEN

OBJECTIVE: To determine whether the difference in outcomes between 'less tight' (target diastolic blood pressure [dBP] of 100 mmHg) versus 'tight' control (target dBP of 85 mmHg) in the CHIPS Trial (ISRCTN 71416914, http://pre-empt.cfri.ca/;CHIPS) depended on the choice of labetalol or methyldopa, the two most commonly used antihypertensive agents in CHIPS. DESIGN: Secondary analysis of CHIPS Trial data. SETTING: International multicentre randomised controlled trial (94 sites, 15 countries). POPULATION OR SAMPLE: A total of 987 women with non-severe non-proteinuric pregnancy hypertension. METHODS: Logistic regression was used for comparisons of 'less tight' versus 'tight' control among women treated with labetalol (but not methydopa) versus methyldopa (but not labetalol). Analyses were adjusted for the influence of baseline factors, including use of any antihypertensive therapy at randomisation. MAIN OUTCOME MEASURES: Main CHIPS Trial outcomes: primary (perinatal loss or high-level neonatal care for > 48 hours), secondary (serious maternal complications), birthweight < 10th centile, severe maternal hypertension, pre-eclampsia, and delivery at < 34 or < 37 weeks. RESULTS: Of 987 women in CHIPS, antihypertensive therapy was taken by 566 women at randomisation (labetalol 111 ['less tight'] versus 127 ['tight'] or methyldopa 126 ['less tight'] versus 117 ['tight']) and 815 women after randomisation (labetalol 186 ['less tight'] versus 247 ['tight'] and methyldopa by 98 ['less tight'] versus 126 ['tight']). Following adjustment, odds ratios for outcomes in 'less tight' versus 'tight' control were similar between antihypertensive groups according to 'at randomisation' and 'after randomisation' therapy. CONCLUSION: Outcomes for 'less tight' versus 'tight' control were not dependent on use of methyldopa or labetalol. TWEETABLE ABSTRACT: In the CHIPS Trial, maternal and infant outcomes were not dependent on use of labetalol or methyldopa.


Asunto(s)
Antihipertensivos/uso terapéutico , Presión Sanguínea/efectos de los fármacos , Hipertensión Inducida en el Embarazo/tratamiento farmacológico , Labetalol/uso terapéutico , Metildopa/uso terapéutico , Adulto , Toma de Decisiones Clínicas , Femenino , Humanos , Hipertensión/tratamiento farmacológico , Hipertensión/fisiopatología , Hipertensión Inducida en el Embarazo/fisiopatología , Recién Nacido de Bajo Peso , Preeclampsia/etiología , Preeclampsia/fisiopatología , Embarazo , Complicaciones Cardiovasculares del Embarazo/tratamiento farmacológico , Complicaciones Cardiovasculares del Embarazo/fisiopatología , Nacimiento Prematuro/etiología , Atención Prenatal/métodos , Factores de Riesgo , Resultado del Tratamiento
8.
BJOG ; 123(7): 1143-51, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26265372

RESUMEN

OBJECTIVE: To compare pregnancy outcomes, accounting for allocated group, between methyldopa-treated and labetalol-treated women in the CHIPS Trial (ISRCTN 71416914) of 'less tight' versus 'tight' control of pregnancy hypertension. DESIGN: Secondary analysis of CHIPS Trial cohort. SETTING: International randomised controlled trial (94 sites, 15 countries). POPULATION OR SAMPLE: Of 987 CHIPS recruits, 481/566 (85.0%) women treated with antihypertensive therapy at randomisation. Of 981 (99.4%) women followed to delivery, 656/745 (88.1%) treated postrandomisation. METHODS: Logistic regression to compare outcomes among women who took methyldopa or labetalol, adjusted for the influence of baseline factors. MAIN OUTCOME MEASURES: CHIPS primary (perinatal loss or high level neonatal care for >48 hours) and secondary (serious maternal complications) outcomes, birthweight <10th centile, severe maternal hypertension, pre-eclampsia and delivery at <34 or <37 weeks. RESULTS: Methyldopa and labetalol were used commonly at randomisation (243/987, 24.6% and 238/987, 24.6%, respectively) and post-randomisation (224/981, 22.8% and 433/981, 44.1%, respectively). Following adjusted analyses, methyldopa (versus labetalol) at randomisation was associated with fewer babies with birthweight <10th centile [adjusted odds ratio (aOR) 0.48; 95% CI 0.20-0.87]. Methyldopa (versus labetalol) postrandomisation was associated with fewer CHIPS primary outcomes (aOR 0.64; 95% CI 0.40-1.00), birthweight <10th centile (aOR 0.54; 95% CI 0.32-0.92), severe hypertension (aOR 0.51; 95% CI 0.31-0.83), pre-eclampsia (aOR 0.55; 95% CI 0.36-0.85), and delivery at <34 weeks (aOR 0.53; 95% CI 0.29-0.96) or <37 weeks (aOR 0.55; 95% CI 0.35-0.85). CONCLUSION: These nonrandomised comparisons are subject to residual confounding, but women treated with methyldopa (versus labetalol), particularly those with pre-existing hypertension, may have had better outcomes. TWEETABLE ABSTRACT: There was no evidence that women treated with methyldopa versus labetalol had worse outcomes.


Asunto(s)
Antihipertensivos/uso terapéutico , Hipertensión Inducida en el Embarazo/prevención & control , Labetalol/uso terapéutico , Metildopa/uso terapéutico , Adulto , Presión Sanguínea/efectos de los fármacos , Femenino , Humanos , Hipertensión/fisiopatología , Hipertensión/prevención & control , Hipertensión Inducida en el Embarazo/fisiopatología , Recién Nacido de Bajo Peso , Preeclampsia/etiología , Preeclampsia/fisiopatología , Embarazo , Complicaciones Cardiovasculares del Embarazo/fisiopatología , Complicaciones Cardiovasculares del Embarazo/prevención & control , Resultado del Embarazo
9.
Matern Child Health J ; 20(10): 2209-15, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27299903

RESUMEN

Introduction The prevalence of ethanol use in many Sub-Saharan African countries is high, but little research exists on use during pregnancy. The objective of this study was to assess the prevalence and predictors of ethanol use among pregnant women in Southwestern Uganda. Methods This descriptive, cross-sectional study was conducted in the maternity ward at Mbarara Regional Referral Hospital (MRRH). All pregnant women giving birth at MRRH between September 23, 2013 and November 23, 2013 were eligible for enrollment. The primary outcome was the proportion of women with ethanol use during pregnancy as determined by self-report. Secondary outcomes included the proportion with positive fatty acid ethyl ester (FAEE) results (indicating ethanol use) and positive TWEAK questionnaire results (indicating possible problem drinking). Predictors of ethanol use were assessed and stratified by patterns of ethanol intake. Results Overall, 505 mother-child dyads enrolled in the study. The proportion of women who reported any ethanol use during pregnancy was 16 % (n = 81, 95 % CI 13-19 %) and the prevalence of heavy drinking 6.3 % (n = 32, 95 % CI 3.8-7.9 %). The strongest predictor of use during pregnancy was pre-pregnancy use, with maternal education as a protective factor. Few neonates (n = 11, 2 %) tested positive for FAEE > 2.00 nmol/g in meconium. The TWEAK questionnaire captured 75 % of women who reported moderate/heavy drinking and aligned more with self-reported ethanol use than meconium results. Conclusions The substantial prevalence and clear predictors of ethanol use suggest that legislative action and educational interventions to increase awareness of potential harms could assist in efforts to decrease use during pregnancy in Southwestern Uganda.


Asunto(s)
Consumo de Bebidas Alcohólicas/efectos adversos , Alcoholismo/epidemiología , Trastornos del Espectro Alcohólico Fetal/epidemiología , Mujeres Embarazadas , Adulto , Consumo de Bebidas Alcohólicas/etnología , Consumo de Bebidas Alcohólicas/metabolismo , Estudios Transversales , Femenino , Humanos , Intercambio Materno-Fetal , Meconio/química , Embarazo , Mujeres Embarazadas/etnología , Prevalencia , Factores Socioeconómicos , Encuestas y Cuestionarios , Uganda/epidemiología
10.
BMC Complement Altern Med ; 16: 102, 2016 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-26980526

RESUMEN

BACKGROUND: The use of herbal medicines for health prevention and ailments is an increasing trend worldwide. Women in pregnancy are no exception; the reported prevalence of herbal medicine use in pregnancy ranges from 1 to 60 %. Despite a common perception of safety, herbal medicines may have potent pharmacological actions, and historically, have been used for this reason. METHODS: A multinational, cross-sectional study on how women treat disease and pregnancy-related health ailments was conducted between October 2011 and February 2012 in Europe, North America, and Australia. This study's primary aim was to evaluate and classify the herbal medicines used according to their safety in pregnancy and, secondly, to investigate risk factors associated with the use of contraindicated herbal medicines during pregnancy. RESULTS: In total, 29.3 % of the women (n = 2673) reported the use of herbal medicines in pregnancy; of which we were able to identify 126 specific herbal medicines used by 2379 women (89.0 %). Twenty seven out of 126 herbal medicines were classified as contraindicated in pregnancy, and were used by 476 women (20.0 %). Twenty-eight were classified as safe for use in pregnancy and used by the largest number of women (n = 1128, 47.4 %). The greatest number was classified as requiring caution in pregnancy; these sixty herbal medicines were used by 751 women (31.6 %). Maternal factors associated with the use of contraindicated herbal medicines in pregnancy were found to be working in the home, having a university education, not using folic acid, and consuming alcohol. Interestingly, the recommendation to take a contraindicated herbal medicine was three times more likely to be from a healthcare practitioner (HCP) than an informal source. CONCLUSION: Based on the current literature the majority of women in this study used an herbal medicine that was classified as safe for use in pregnancy. Women who reported taking a contraindicated herb were more likely to have been recommended it use by an HCP rather than informal source(s), indicating an urgent need for more education among HCPs. The paucity of human studies on herbal medicines safety in pregnancy stands in stark contrast to the widespread use of these products among pregnant women.


Asunto(s)
Medicina de Hierbas/clasificación , Complicaciones del Embarazo/terapia , Seguridad , Estudios Transversales , Femenino , Humanos , Cooperación Internacional , Fitoterapia , Embarazo , Encuestas y Cuestionarios
11.
Pharmacogenomics J ; 15(5): 430-5, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25752520

RESUMEN

The objective of this study was to examine interindividual variability in codeine requirements and pain management by examining select genetic polymorphisms in the codeine pharmacological pathway. The study included a nested cohort of 98 women who were prescribed codeine following cesarean section. Participants were genotyped for select polymorphisms of the COMT, ABCB1, CYP2D6, UGT2B7 and OPRM1 genes and instructed to describe their level of pain using the visual analog scale (mm) 1 h following each dose of codeine. Analysis revealed that reported pain increases with maternal age (P=0.041). Asians required more codeine than Caucasians (P=0.048). Significant differences in mean dose consumption were seen among the genotypic groups of the OPRM1 A118G (P=0.001) and UGT2B7 C802T (P=0.015) variants. These variants were found to predict codeine consumption in the cohort overall (P=0.000) and among Caucasians (P=0.001). These findings will assist in customizing therapy to effectively manage postpartum pain.


Asunto(s)
Codeína/administración & dosificación , Glucuronosiltransferasa/genética , Dolor/genética , Receptores Opioides mu/genética , Adulto , Cesárea/efectos adversos , Femenino , Genotipo , Humanos , Dolor/tratamiento farmacológico , Dolor/patología , Manejo del Dolor , Farmacogenética , Polimorfismo de Nucleótido Simple , Periodo Posparto , Embarazo
12.
Pharmacogenomics J ; 15(2): 189-95, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25156213

RESUMEN

Cotinine is a proxy for secondhand smoke (SHS) exposure. Genetic variation along nicotine and cotinine metabolic pathways may alter the internal cotinine dose, leading to misinterpretations of exposure-health outcome associations. Caucasian children with available SHS exposure and hair cotinine data were genotyped for metabolism-related genes. SHS-exposed children had 2.4-fold higher hair cotinine (0.14±0.22 ng mg(-1)) than unexposed children (0.06±0.05 ng mg(-1), P<0.001). SHS-exposed children carrying the NAT1 minor allele had twofold higher hair cotinine (0.18 ng mg(-1) for heterozygotes and 0.17 ng mg(-1) for homozygotes) compared with major allele homozygotes (0.09 ng mg(-1), P=0.0009), even after adjustment for SHS dose. These findings support that NAT1 has a role in the metabolic pathway of nicotine/cotinine and/or their metabolites. The increased cotinine levels observed for those carrying the minor allele may lead to SHS exposure misclassification in studies utilizing cotinine as a biomarker. Additional studies are required to identify functional single-nucleotide polymorphism(s) (SNP(s)) in NAT1 and elucidate the biological consequences of the mutation(s).


Asunto(s)
Arilamina N-Acetiltransferasa/genética , Cotinina/metabolismo , Isoenzimas/genética , Polimorfismo de Nucleótido Simple/genética , Población Blanca/genética , Alelos , Biomarcadores/metabolismo , Niño , Preescolar , Femenino , Genotipo , Humanos , Lactante , Masculino , Nicotina/efectos adversos , Nicotina/metabolismo , Fumar/efectos adversos , Fumar/metabolismo , Contaminación por Humo de Tabaco
13.
Br J Dermatol ; 173(5): 1132-41, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26215715

RESUMEN

Evaluation of human data regarding the outcomes of topical-retinoid-exposed pregnancies is important in terms of counselling pregnant women with inadvertent exposure. The objective of this study was thus to determine whether exposure to topical retinoids leads to an increase in the risk of adverse pregnancy outcomes. We carried out a search using the Medline, Embase, Web of Science and Cochrane Central Register of Controlled Trials databases from inception to 4 December 2014. The selection, review and quality assessment of the studies were carried out by two independent reviewers according to predetermined inclusion criteria. Odds ratios (ORs) were calculated by the random effects method. This meta-analysis, including a total of 654 pregnant women who were exposed to topical retinoids, and 1375 unexposed control pregnant women, did not detect significant increases in rates of major congenital malformations [OR 1·22, 95% confidence interval (CI) 0·65-2·29], spontaneous abortions (OR 1·02, 95% CI 0·64-1·63), stillbirth (OR 2·06, 95% CI 0·43-9·86), elective termination of pregnancy (OR 1·89, 95% CI 0·52-6·80), low birthweight (OR 1·01, 95% CI, 0·31-3·27) or prematurity (OR 0·69, 95% CI 0·39-1·23). No significant heterogeneity was detected among the studies for the evaluated outcomes. The present meta-analysis ruled out a major increase in the rates of major congenital malformations, spontaneous abortions, low birthweight and prematurity. This result may be used primarily in reassuring women who were inadvertently exposed to topical retinoids during their pregnancy. However, the statistical power is not adequate to justify the use of topical retinoids during pregnancy.


Asunto(s)
Anomalías Inducidas por Medicamentos/etiología , Fármacos Dermatológicos/efectos adversos , Exposición Materna/efectos adversos , Complicaciones del Embarazo/inducido químicamente , Resultado del Embarazo , Retinoides/efectos adversos , Aborto Inducido/estadística & datos numéricos , Aborto Espontáneo/inducido químicamente , Acné Vulgar/tratamiento farmacológico , Administración Cutánea , Fármacos Dermatológicos/administración & dosificación , Métodos Epidemiológicos , Femenino , Humanos , Recién Nacido de Bajo Peso , Embarazo , Primer Trimestre del Embarazo , Nacimiento Prematuro/inducido químicamente , Retinoides/administración & dosificación , Mortinato
14.
Phys Rev Lett ; 112(14): 147001, 2014 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-24766004

RESUMEN

The presence of optical polarization anisotropies, such as Faraday or Kerr effects, linear birefringence, and magnetoelectric birefringence are evidence for broken symmetry states of matter. The recent discovery of a Kerr effect using near-IR light in the pseudogap phase of the cuprates can be regarded as a strong evidence for a spontaneous symmetry breaking and the existence of an anomalous long-range ordered state. In this work we present a high precision study of the polarimetry properties of the cuprates in the THz regime. While no Faraday effect was found in this frequency range to the limits of our experimental uncertainty (1.3 milli-radian or 0.07°), a small but significant polarization rotation was detected that derives from an anomalous linear dichroism. In YBa2Cu3Oy the effect has a temperature onset that mirrors the pseudogap temperature T* and is enhanced in magnitude in underdoped samples. In x=1/8 La2-xBaxCuO4, the effect onsets above room temperature, but shows a dramatic enhancement near a temperature scale known to be associated with spin- and charge-ordered states. These features are consistent with a loss of both C4 rotation and mirror symmetry in the electronic structure of the CuO2 planes in the pseudogap state.

15.
J Obstet Gynaecol ; 34(5): 392-9, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24678814

RESUMEN

Cetirizine, a second-generation antihistamine, is an active metabolite of hydroxyzine used in the treatment of allergies, but the data on fetal safety are inconclusive. Pregnant women who were counselled by the 'Motherisk Program' regarding cetirizine exposure were enrolled in a cohort study and compared with pregnant women counselled for non-teratogenic exposures. The objective was to measure the rate of adverse pregnancy outcomes. Subsequently, we also conducted a meta-analysis of cohort studies that examined the pregnancy outcomes of women exposed to hydroxyzine or cetirizine during pregnancy. In the cohort study, there were no significant differences in the rates of major malformations between the cetirizine exposed and comparison group. In the meta-analysis, cetirizine was not associated with increased teratogenic risk. In contrast, a meta-analysis of cetirizine and hydroxyzine studies showed a marginal association with major malformations. Cetirizine is not associated with a clinically important increase in risk of adverse fetal outcomes.


Asunto(s)
Anomalías Inducidas por Medicamentos/epidemiología , Cetirizina/efectos adversos , Antagonistas de los Receptores Histamínicos H1 no Sedantes/efectos adversos , Nacimiento Vivo/epidemiología , Complicaciones del Embarazo/epidemiología , Aborto Espontáneo/epidemiología , Adulto , Femenino , Humanos , Hidroxizina/efectos adversos , Embarazo , Trimestres del Embarazo , Nacimiento Prematuro/epidemiología , Mortinato/epidemiología
16.
Alcohol Alcohol ; 48(3): 283-7, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23408242

RESUMEN

AIMS: Formic acid has recently been detected in maternal blood and umbilical cord blood of infants born to alcohol abusing mothers. This toxic metabolite of methanol requires folate for detoxification. We hypothesized that formic acid produced in the maternal circulation will transfer across the placenta and will be toxic to the placenta. Our objectives were, first, to determine whether formic acid transfers across the human placenta and whether it is toxic to the placenta and second, to determine whether folate can decrease transplacental transfer of formic acid and mitigate toxicity. METHODS: Dual perfusion of a single placental lobule ex vivo was used to characterize the transfer of formic acid across the placenta. After a 1-h control period, formic acid (2 mM) was introduced into the maternal circulation with (n = 4) or without folate (1 µM) (n = 4) and was allowed to equilibrate for 3 h. RESULTS: Formic acid transferred rapidly from the maternal to the fetal circulation, and transfer was not altered with the addition of folate. Compared with the control period, there was a significant decrease in hCG secretion (P = 0.03) after addition of formic acid. The addition of folic acid to the perfusate mitigated the decrease in hCG. CONCLUSIONS: Formic acid rapidly transfers across the placenta and thus has the potential to be toxic to the developing fetus. Formic acid decreases hCG secretion in the placenta, which may alter steroidogenesis and differentiation of the cytotrophoblasts, and this adverse effect can be mitigated by folate.


Asunto(s)
Gonadotropina Coriónica/metabolismo , Ácido Fólico/farmacología , Formiatos/efectos adversos , Formiatos/antagonistas & inhibidores , Intercambio Materno-Fetal/efectos de los fármacos , Placenta/efectos de los fármacos , Adulto , Femenino , Feto/metabolismo , Formiatos/metabolismo , Humanos , Recién Nacido , Placenta/patología , Embarazo
17.
Clin Otolaryngol ; 38(2): 115-29, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23448586

RESUMEN

BACKGROUND: Although the literature suggests that non-steroidal anti-inflammatory drugs (NSAIDs) are effective in controlling post-operative pain in the paediatric population, physicians have been reluctant to utilise these medications after tonsillectomy due to concerns of increased bleeding rates. While many surgeons prescribe opioid analgesics postoperatively, these are associated with a number of potential adverse side-effects including nausea, vomiting, constipation, excessive sedation and respiratory compromise. OBJECTIVE OF REVIEW: To compare bleeding rates and severity between recipients of NSAIDs versus placebo or opioid analgesics for tonsillectomy. SEARCH STRATEGY: Two authors independently searched electronic databases including PubMed, OVID, EMBASE and Cochrane Review from inception to July 2012. The keywords used included: Adenotonsillectomy, Tonsillectomy, Analgesia, Bleeding, Perioperative and Postoperative. These were then combined in various combinations with specific NSAIDs. EVALUATION METHOD: A systematic review and meta-analysis of all randomised control trials comparing bleeding rates and severity between NSAIDs versus placebo or opioids post-tonsillectomy. RESULTS: A total of 36 studies met our inclusion criteria including 1747 children and 1446 adults. When all of the studies were combined in a meta-analysis using the most severe outcome, there was no increased risk of bleeding in those using NSAIDs after tonsillectomy. Use of NSAIDs in general [1.30 (0.90-1.88)] or in children [1.06 (0.65-1.74)] was not associated with increased risk of bleeding in general, most severe bleeding, secondary haemorrhage, readmission or need of reoperation due to bleeding. Similarly, there was no increased bleeding risk for specific NSAIDs in adults. In the studies looking at paediatric subjects, the overall odds ratio of bleeding was even lower than in the general population and not significant. This result is based on 18 studies, six of which had zero outcomes in either treatment arm. Similar to the general population analysis, there was no significant difference in any of the subanalyses: bleeds treated with reoperation, readmission or bleeds in children that could be managed conservatively. There were also no significant differences in the subanalyses of individual NSAIDs. Similarly, there was no significant difference in rates of bleeding in the subanalysis of studies that gave NSAIDs multiple times, for instance, both before and after surgery. CONCLUSIONS: These results suggest that NSAIDs can be considered as a safe method of analgesia among children undergoing tonsillectomy.


Asunto(s)
Antiinflamatorios no Esteroideos/farmacología , Dolor Postoperatorio/tratamiento farmacológico , Hemorragia Posoperatoria/inducido químicamente , Ensayos Clínicos Controlados Aleatorios como Asunto , Tonsilectomía , Adulto , Analgésicos Opioides/efectos adversos , Niño , Estreñimiento/inducido químicamente , Humanos , Manejo del Dolor , Náusea y Vómito Posoperatorios/inducido químicamente , Respiración/efectos de los fármacos , Factores de Riesgo
18.
J Obstet Gynaecol ; 33(1): 1-8, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23259868

RESUMEN

Maintaining remission of inflammatory bowel disease (IBD) during pregnancy is critical for positive pregnancy outcomes. Conflicting data exist regarding the association between thiopurine use for IBD treatment in pregnancy and adverse pregnancy outcomes and this meta-analysis aims to clarify this association. A meta-analysis was performed of all original human studies reporting outcomes in pregnancy in patients receiving thiopurines. Nine studies satisfied the inclusion criteria and a total of 494 patients with IBD and 2,782 IBD controls were reported. When compared with healthy women, those receiving thiopurines had an increased risk for congenital malformations (RR 1.45; 95% CI 1.07-1.96; p = 0.02); however, when compared with IBD controls, there was no increased risk (RR 1.37; 95% CI 0.92-2.05; p = 0.1). These data provide support for thiopurines having a minimal risk, if any, to the fetus.


Asunto(s)
Azatioprina/efectos adversos , Inmunosupresores/efectos adversos , Enfermedades Inflamatorias del Intestino/tratamiento farmacológico , Mercaptopurina/efectos adversos , Complicaciones del Embarazo/tratamiento farmacológico , Anomalías Inducidas por Medicamentos/etiología , Aborto Espontáneo/inducido químicamente , Animales , Peso al Nacer/efectos de los fármacos , Estudios de Casos y Controles , Femenino , Humanos , Embarazo , Resultado del Embarazo , Nacimiento Prematuro/inducido químicamente
19.
J Obstet Gynaecol ; 33(2): 160-2, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23445139

RESUMEN

The safety of domperidone in pregnancy remains unknown. Therefore, the study aimed to prospectively evaluate the fetal outcomes of women who were taking domperidone during pregnancy. In a prospective cohort study design, 120 1st- trimester pregnant women who were taking domperidone for controlling gastrointestinal tract symptoms and 212 age-matched pregnant women not exposed to any potential teratogenic agent, were followed-up until delivery. In the case group, domperidone was indicated for control of functional gastrointestinal disorders in 59.2%, the maximum dose was 30 mg/day and exposure occurred between 2(+4) and 20 weeks' gestation. Fetal outcomes including gestational age at birth, birth weight and length, head circumference at birth, and 1- and 5-min Apgar score were similar in the two study groups. There were three babies born with malformations in each group (OR = 0.6; 95% CI 0.1, 2.8). In conclusion, domperidone does not appear to be a major human teratogen. However, our findings require further confirmation in larger studies.


Asunto(s)
Antieméticos/efectos adversos , Peso al Nacer/efectos de los fármacos , Domperidona/efectos adversos , Desarrollo Fetal/efectos de los fármacos , Anomalías Inducidas por Medicamentos/etiología , Adulto , Femenino , Humanos , Recién Nacido , Embarazo , Estudios Prospectivos
20.
J Obstet Gynaecol ; 33(6): 557-60, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23919849

RESUMEN

The placebo effect has not been characterised in pregnant women suffering from nausea and vomiting of pregnancy (NVP). Our aim was to characterise determinants of the placebo effect in women treated with placebo for NVP. We analysed data from a multicentre, double blind randomised controlled trial of Diclectin (delayed release doxylamine and pyridoxine) vs placebo for the treatment of NVP. A total of 127 women in the placebo arm and 130 in the active arm provided evaluable data for this analysis. Women who chose to continue placebo on a compassionate basis (n = 41) had significantly better improvement in symptoms of NVP and higher Wellbeing scores than those who did not ask to continue compassionate use. Results were similar in the active drug arm. The request to continue compassionate use of either placebo or active drug could be predicted by greater improvement in symptoms of NVP during the trial period.


Asunto(s)
Diciclomina/uso terapéutico , Doxilamina/uso terapéutico , Antagonistas de los Receptores Histamínicos H1/uso terapéutico , Náuseas Matinales/tratamiento farmacológico , Efecto Placebo , Piridoxina/uso terapéutico , Adulto , Método Doble Ciego , Combinación de Medicamentos , Femenino , Humanos , Modelos Logísticos , Embarazo , Ensayos Clínicos Controlados Aleatorios como Asunto , Adulto Joven
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