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1.
Foods ; 12(22)2023 Nov 07.
Artículo en Inglés | MEDLINE | ID: mdl-38002110

RESUMEN

Beta-agonists (ß-agonists) in meat products in one's diet raise concerns about the possibility of foodborne illness. It may also lead to discomfort, such as headaches and occasional irregular heartbeats, which might be linked to a heightened concern for cardiovascular issues. Taiwan's high demand for meat and reliance on imported meat products from certain countries where ß-agonists are permitted has raised concerns. Recent import border checks and monitoring of meat products in the market have revealed the concentration of non-compliance with ß-agonist residue regulations, which is ten ppb. This study aims to analyze the concentration of ß-agonist residues in meat products sold in Taiwan and assess the current levels of exposure and dietary risk for consumers. The study analyzed 1415 samples of domestically produced and imported livestock products from supermarkets, traditional markets, and bulk stores in New Taipei City between 2019 and 2023. The samples were analyzed using the method for detecting 21 ß-agonists based on the Taiwan Food and Drug Administration's specifications. Estimated daily intake (EDI) of ß-agonists for different age groups and the target hazard quotient (THQ) were used to assess dietary exposure and risk. The results showed that all 1415 samples were compliant with regulations. Among them, 43 beef samples showed residues of ractopamine originating from the United States, with residue concentrations ranging from 1 to 10 µg/kg and an average residue concentration of 3.3 ± 1.9 µg/kg. Under average consumption, the highest EDI for the exposed population was observed in the 6-12 age group, with values of 0.1469 µg/kg/day, 0.0734 µg/kg/day, and 0.0242 µg/kg/day for the three residue concentrations (maximum detected residue, maximum allowable residue, and average detected residue, respectively). The THQs for ractopamine in imported beef samples were all less than 1, indicating no health hazards at the current intake levels of each age group and the residue concentrations in commercially available beef. Despite the findings, traders need to acknowledge regulatory variations between Taiwan and exporting countries when importing meat products. Traders should provide inspection reports to monitor ß-agonist residue levels in imports or explore sourcing beef from countries with ß-agonist bans.

2.
Foods ; 12(9)2023 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-37174302

RESUMEN

Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) are extensively used in food-contact paper and cardboard. However, they may migrate from food-contact materials to food, and the migration rate may be increased at elevated temperatures. In addition, there is a positive association of PFOS/PFOA levels with total cholesterol. Therefore, this study aims to assess the human health risk of increased total cholesterol associated with long-term exposure to PFOS and PFOA migration from food-contact paper and cardboard under temperature variation scenarios in adults. An exposure assessment was performed using an uptake dose model to estimate the uptake doses of PFOS and PFOA for the high-, intermediate-, and low-exposure scenarios. Benchmark dose (BMD) modeling was conducted to describe the dose-response relationships between PFOS/PFOA and total cholesterol levels. Finally, a margin of exposure (MOE) approach was used to characterize the risk. The results of the exposure assessment showed that PFOS and PFOA uptake doses in the high-exposure scenarios were around one and two orders of magnitude greater than those in the intermediate- and low-exposure scenarios, respectively. Under high-exposure scenarios, the uptake levels of hundredth-percentile PFOS and PFOA at high temperatures may raise health concerns (MOE < 1). This study provides a methodology to assess the health risks associated with exposure to migration of food contaminants from various types of paper and cardboard that come into contact with food.

3.
Molecules ; 28(4)2023 Feb 08.
Artículo en Inglés | MEDLINE | ID: mdl-36838626

RESUMEN

The objective of this study was to develop a simultaneous analysis method of furan and its 10 derivatives in different food commodities. The results indicated that furan and its 10 derivatives could be separated within 9.5 min by using a HP-5MS column and gas chromatography-tandem mass spectrometry (GC-MS/MS) with multiple reaction monitoring mode for detection. Furthermore, this method could resolve several furan isomers, such as 2-methyl furan and 3-methyl furan, as well as 2,3-dimethyl furan and 2,5-dimethyl furan. The most optimal extraction conditions were: 5 g of the fruit or juice sample mixed with 5 mL of the saturated NaCl solution, separately, or 1 g of the canned oily fish sample mixed with 9 mL of the saturated NaCl solution, followed by the equilibration of each sample at 35 °C for 15 min, using a carboxen-polydimethylsiloxane SPME arrow to adsorb the analytes for 15 min at 35 °C for subsequent analysis by GC-MS/MS. For method validation of all the analytes in the different food matrices, the recovery was 76-117% and the limit of the quantitation was 0.003-0.675 ng/g, while the relative standard deviation (RSD%) of the intra-day variability range from 1-16%, and that of the inter-day variability was from 4-20%. The method validation data further demonstrated that a reliable method was established for the analysis of furan and its 10 derivatives in commercial foods.


Asunto(s)
Cloruro de Sodio , Espectrometría de Masas en Tándem , Animales , Cromatografía de Gases y Espectrometría de Masas/métodos , Microextracción en Fase Sólida/métodos , Extracción en Fase Sólida , Furanos/química , Frutas/química
5.
Environ Sci Pollut Res Int ; 30(13): 36228-36243, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36547825

RESUMEN

The Wells-Riley model invokes human physiological and engineering parameters to successfully treat airborne transmission of infectious diseases. Applications of this model would have high potentiality on evaluating policy actions and interventions intended to improve public safety efforts on preventing the spread of COVID-19 in an enclosed space. Here, we constructed the interaction relationships among basic reproduction number (R0) - exposure time - indoor population number by using the Wells-Riley model to provide a robust means to assist in planning containment efforts. We quantified SARS-CoV-2 changes in a case study of two Wuhan (Fangcang and Renmin) hospitals. We conducted similar approach to develop control measures in various hospital functional units by taking all accountable factors. We showed that inhalation rates of individuals proved crucial for influencing the transmissibility of SARS-CoV-2, followed by air supply rate and exposure time. We suggest a minimum air change per hour (ACH) of 7 h-1 would be at least appropriate with current room volume requirements in healthcare buildings when indoor population number is < 10 and exposure time is < 1 h with one infector and low activity levels being considered. However, higher ACH (> 16 h-1) with optimal arranged-exposure time/people and high-efficiency air filters would be suggested if more infectors or higher activity levels are presented. Our models lay out a practical metric for evaluating the efficacy of control measures on COVID-19 infection in built environments. Our case studies further indicate that the Wells-Riley model provides a predictive and mechanistic basis for empirical COVID-19 impact reduction planning and gives a framework to treat highly transmissible but mechanically heterogeneous airborne SARS-CoV-2.


Asunto(s)
COVID-19 , Humanos , SARS-CoV-2 , Hospitales
6.
Trop Med Infect Dis ; 7(12)2022 Nov 29.
Artículo en Inglés | MEDLINE | ID: mdl-36548663

RESUMEN

The identification of the key factors influencing dengue occurrence is critical for a successful response to the outbreak. It was interesting to consider possible differences in meteorological factors affecting dengue incidence during epidemic and non-epidemic periods. In this study, the overall correlation between weekly dengue incidence rates and meteorological variables were conducted in southern Taiwan (Tainan and Kaohsiung cities) from 2007 to 2017. The lagged-time Poisson regression analysis based on generalized estimating equation (GEE) was also performed. This study found that the best-fitting Poisson models with the smallest QICu values to characterize the relationships between dengue fever cases and meteorological factors in Tainan (QICu = −8.49 × 10−3) and Kaohsiung (−3116.30) for epidemic periods, respectively. During dengue epidemics, the maximum temperature with 2-month lag (ß = 0.8400, p < 0.001) and minimum temperature with 5-month lag (0.3832, p < 0.001). During non-epidemic periods, the minimum temperature with 3-month lag (0.1737, p < 0.001) and mean temperature with 2-month lag (2.6743, p < 0.001) had a positive effect on dengue incidence in Tainan and Kaohsiung, respectively.

7.
Taiwan J Obstet Gynecol ; 61(6): 1065-1068, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36427976

RESUMEN

OBJECTIVE: One multiparity women had recurrent pregnancies of skeletal dysplasia. The karyotype and array-comparative genomic hybridization were unremarkable. Thus, trio whole exome sequencings were suggested. CASE REPORT: The ALPL gene mutations were identified. Maternal heterozygous deletion on Chr1: 21880592 (GRCh37) TA->T, paternal heterozygous insertion on Chr1 21894597, 21894598 (GRCh37) G->GC, T->TAA, and the compound heterozygous mutation were noted on her third pregnancy. The prenatal ultrasound findings and ALPL variants were compatible with the diagnosis of hypophosphatasia. Sanger sequencings were performed and found their normal phenotype daughter carried the same heterozygous mutation with her mother. The mother was then incidentally found her fourth pregnancy; unfortunately, the fetus was prenatally diagnosed of hypophosphatasia with the compound heterozygous mutations. CONCLUSION: The whole exome sequencing could assist to find the disease-causing variants, which may not be identified through routine prenatal diagnosis. With the precise diagnosis, we could provide the counseling for prenatal or pre-implantation diagnosis.


Asunto(s)
Hipofosfatasia , Embarazo , Femenino , Humanos , Hibridación Genómica Comparativa , Diagnóstico Prenatal , Feto , Mutación , Fosfatasa Alcalina
8.
Taiwan J Obstet Gynecol ; 61(6): 999-1003, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36428005

RESUMEN

OBJECTIVE: Peripartum cardiomyopathy (PPCM) developed from late pregnancy to five months after delivery. Women with PPCM have the risk of mortality or non-recovered cardiac function. We aimed to investigate women with PPCM in Taiwan. MATERIALS AND METHODS: The retrospective study recruited patients with PPCM from January 2002 to October 2018 in a tertiary center. We evaluated the presentations, onset, associated conditions, maternal and fetal outcomes, follow-up cardiac function, and subsequent pregnancies. The clinical data were compared between antepartum and postpartum-onset of PPCM. RESULTS: Thirty women were identified and seventeen (56.6%) patients were antepartum-onset. The delivery time, ranged from 26 to 40 weeks, was mostly at 35 weeks. Twenty-one patients had cardiac function follow-up and seven (33.3%) were non-recovered in six months. The associated conditions of PPCM included age >30, primiparity, preeclampsia or hypertension, obesity, twin pregnancy, and tocolysis. The maternal characteristics and associated conditions were not significant different, but early preterm (32.8 ± 3.6 vs. 35.5 ± 2.4 weeks, p = 0.042) and lower Apgar scores in one (7 vs. 9, p = 0.002) and 5 min (9 vs. 10, p = 0.005) were observed in the antepartum-onset group. CONCLUSION: In conclusion, PPCM commonly occurred around 35 weeks of gestation, ranged from 26 to 40 weeks. Additionally, there were risks of early preterm and low Apgar scores in women with antepartum-onset of PPCM.


Asunto(s)
Cardiomiopatías , Trastornos Puerperales , Recién Nacido , Humanos , Femenino , Embarazo , Periodo Periparto , Estudios Retrospectivos , Trastornos Puerperales/epidemiología , Periodo Posparto
9.
Artículo en Inglés | MEDLINE | ID: mdl-36011542

RESUMEN

A sharp increase in migrant workers has raised concerns for TB epidemics, yet optimal TB control strategies remain unclear in Taiwan regions. This study assessed intervention efforts on reducing tuberculosis (TB) infection among migrant workers. We performed large-scale data analyses and used them to develop a control-based migrant worker-associated susceptible-latently infected-infectious-recovered (SLTR) model. We used the SLTR model to assess potential intervention strategies such as social distancing, early screening, and directly observed treatment, short-course (DOTS) for TB transmission among migrant workers and locals in three major hotspot cities from 2018 to 2023. We showed that social distancing was the best single strategy, while the best dual measure was social distancing coupled with early screening. However, the effectiveness of the triple strategy was marginally (1-3%) better than that of the dual measure. Our study provides a mechanistic framework to facilitate understanding of TB transmission dynamics between locals and migrant workers and to recommend better prevention strategies in anticipation of achieving WHO's milestones by the next decade. Our work has implications for migrant worker-associated TB infection prevention on a global scale and provides a knowledge base for exploring how outcomes can be best implemented by alternative control measure approaches.


Asunto(s)
Tuberculosis Latente , Migrantes , Tuberculosis , Demografía , Humanos , Taiwán/epidemiología , Tuberculosis/diagnóstico , Tuberculosis/epidemiología , Tuberculosis/prevención & control
10.
J Fish Dis ; 45(8): 1117-1132, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35514291

RESUMEN

Probiotics have been used to alleviate disease transmission in aquaculture. However, there are limited studies on probiotic use in modulating tilapia lake virus (TiLV). We assessed commercially available probiotic supplements used in TiLV-infected tilapia and performed mortality and cohabitation assays. We developed a mechanistic approach to predict dose-response interactions of probiotic effects on mortality and immune gene response. We used a susceptible-infected-mortality disease model to assess key epidemiological parameters such as transmission rate and basic reproduction number (R0 ) based on our viral load dynamic data. We found that the most marked benefits of probiotics are significantly associated with immune system enhancements (~30%) and reductions in disease transmission (~80%) and R0 (~70%) in tilapia populations, resulting in a higher tolerance of farming densities (~400 fold) in aquaculture. These findings provide early insights as to how probiotic use-related factors may influence TiLV transmission and the immune responses in TiLV-infected tilapia. Our study facilitates understanding the mode of action of probiotics in disease containment and predicting better probiotic dosages in diet and supplements to achieve the optimal culturing conditions. Overall, our analysis assures that further study of rationally designed and targeted probiotics, or mechanistic modelling is warranted on the basis of promising early data of this approach.


Asunto(s)
Enfermedades de los Peces , Probióticos , Tilapia , Animales , Acuicultura , Inmunidad , Probióticos/farmacología
11.
Taiwan J Obstet Gynecol ; 60(3): 517-522, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33966739

RESUMEN

OBJECTIVE: To evaluate the association between intrauterine growth restriction (IUGR) and the incidence of fetuses with patent ductus arteriosus (PDA) and Hemodynamically significant PDA (Hs-PDA) in dichorionic twins (DC) with selective IUGR. MATERIALS AND METHODS: This is an observational cohort study and retrospective case assessment, involved twins born at Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan between 2013 and 2018. DC twins with selective IUGR (sIUGR) were defined as the presence of a birth weight discordance of >25% and a smaller twin with a birth weight below the tenth percentile. PDA was diagnosed using echocardiography between postnatal day 3 and 7. Hs-PDA was defined as PDA plus increased pulmonary circulation, poor systemic perfusion, cardiomegaly, pulmonary edema, or hypotension requiring pharmacotherapeutic intervention. RESULT: A total of 1187 twins were delivered during the study period, and 53 DC twins with selective IUGR were included in this study. DC twins with PDA have higher rate of preterm birth, lower gestational age of delivery, and lower mean birth weight of both twins compared with DC twins without PDA. In a comparison of the sIUGR twin with the appropriate for gestational age co-twin, both the incidences of PDA (28.30% vs. 7.55%, respectively; P = 0.003) and Hs-PDA (24.53% vs. 5.66%, respectively; P = 0.002) were higher in sIUGR fetuses than in the appropriate for gestational age co-twins. Small gestational age of delivery was the only variable to predict PDA and Hs-PDA [p = 0.002, Odds ratio = 0.57 (0.39-0.82), p = 0.009, Odds ratio = 0.71 (0.55-0.92), respectively]. CONCLUSION: An analysis of dichorionic twins with sIUGR indicated that IUGR increased the risk of PDA and hemodynamically significant PDA.


Asunto(s)
Enfermedades en Gemelos/etiología , Conducto Arterioso Permeable/etiología , Retardo del Crecimiento Fetal/fisiopatología , Embarazo Gemelar/fisiología , Gemelos Dicigóticos/estadística & datos numéricos , Adulto , Peso al Nacer , Enfermedades en Gemelos/diagnóstico por imagen , Enfermedades en Gemelos/fisiopatología , Conducto Arterioso Permeable/diagnóstico por imagen , Conducto Arterioso Permeable/fisiopatología , Ecocardiografía , Femenino , Retardo del Crecimiento Fetal/diagnóstico por imagen , Edad Gestacional , Humanos , Recién Nacido de Bajo Peso , Recién Nacido , Recién Nacido Pequeño para la Edad Gestacional , Oportunidad Relativa , Embarazo , Nacimiento Prematuro/etiología , Estudios Retrospectivos , Taiwán
12.
Artículo en Inglés | MEDLINE | ID: mdl-33530648

RESUMEN

Aluminum (Al) exposure at human dietary levels raises health concerns, yet little is known about the Al exposure from the Taiwanese diet. The amount of aluminum (Al)-containing food consumption in the Taiwanese total diet is increasing, which contributes to the total diet consumption., which raises the health concerns. In this study, we aim to assess estimated weekly intake (EWI) and the percentage of provisional tolerable weekly intake (%PTWI) of the dietary exposure to Al in different age-sex groups. We also applied probabilistic risk analyses to quantify the parameters' uncertainty by focusing on the distribution function for the Al concentration in food, consumption rate, and body weight in specific age groups. Results indicated that the EWIs declined with increasing age after 6-years old (7-12 > 13-15 > 16-18 > 19-64 > 65+). Results indicated that the EWIs gradually declined after 6-year of age. The EWIs of Al-rich food in cake + waffle, kelp, snacks, and bread contributed 20%, 17%, 17%, and 11%, respectively, to the total EWIs, corresponding with the much higher consumption rates for these four foods. The 75th percentile of EWIs for the children aged 34-6 years had a %PTWI valued at over 100%, indicating a potential risk of Al intake via dietary exposure. Our findings show that there is a concern about the consumption of Al-rich foods for children in Taiwan.


Asunto(s)
Aluminio , Exposición Dietética , Aluminio/análisis , Niño , Dieta , Contaminación de Alimentos/análisis , Humanos , Medición de Riesgo , Taiwán/epidemiología
13.
Hepatol Res ; 50(12): 1386-1390, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32909341

RESUMEN

The severe form of acute exacerbation of hepatitis B during pregnancy is a rare but life-threatening condition for both the mother and the fetus. A 32-year-old pregnant woman at 10 weeks of gestation was diagnosed with acute decompensated liver failure due to acute exacerbation of hepatitis B. The Model for End-stage Liver Disease score was up to 37. The patient was managed carefully with antiviral treatment, fluid resuscitation, correction of coagulopathy, close monitoring of hepatic function, and regular assessment of the fetus. She was transplanted with a deceased liver at 14 weeks and 1 day of gestation. With careful post-transplant care and avoidance of medication with risk of miscarriage and teratogenicity, a healthy baby was delivered at 39 weeks and 1 day of gestation. Herein, we report this critical condition of pregnancy that was complicated with liver failure due to acute exacerbation of hepatitis B, but had favorable outcomes for both the mother and the baby after liver transplantation.

14.
Gene ; 738: 144461, 2020 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-32057927

RESUMEN

Down syndrome is one of the most common chromosomal disorders and yet our understanding about the dysregulated genes in this disease is limited. Through this case study, we investigated the gene expression profile of primary amniotic fluid mesenchymal stem cells (AFMSCs) isolated from the amniotic sac of monozygotic twins discordant for trisomy 21 with one fetal hydrops at 17 weeks of gestation. AFMSCs were cultured to analyze the gene expression profiles for the human transcriptome array. Gene ontology was used to evaluate dysregulated gene functions. Total 25,799 genes were identified such that 65 were up-regulated (0.25%) and 111 were down-regulated (0.43%) with a log2 fold change trisomy 21/euploidy (log2 [FC]) > 1, p < 0.01). 16 genes were selected and verified by qRT-PCR, which showed compatible result with transcriptome array. At the chromosome level, chromosome 21 was found to carry the highest percentage of up-regulated genes (2.13%, 7/329 genes) with the highest mean log2 [FC] (0.23, p < 10-5), particularly on 21q22.3. There were eight segments with significant mean log2 [FC] on chromosomes 1, 6, 11, and 21 for upregulation, and on chromosomes 16, 17, and 19 for downregulation, indicating a pattern of dysregulated genes clustering in domains along the genome. Gene ontology showed the identified genes associated with extracellular matrix organization (11 genes, p = 5.1 × 10-6) and central nervous system development (8 genes, p = 6.0 × 10-5). Using transcriptome analysis of the AFMSCs of monozygotic twins discordant for trisomy 21, we report the dysregulated genes involved in Down syndrome, their predominance on chromosome 21, and the cluster pattern on the whole genome.


Asunto(s)
Síndrome de Down/genética , Perfilación de la Expresión Génica/métodos , Análisis por Micromatrices/métodos , Líquido Amniótico , Trastornos de los Cromosomas/genética , Enfermedades en Gemelos/genética , Femenino , Ontología de Genes , Genoma , Genotipo , Humanos , Células Madre Mesenquimatosas/fisiología , Fenotipo , Embarazo , Transcriptoma/genética , Trisomía/genética , Gemelos Monocigóticos/genética
15.
Environ Sci Pollut Res Int ; 27(11): 12112-12121, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31989497

RESUMEN

Neonicotinoids (NEOs) are a class of pesticides widely used worldwide. This study analyzed post-cooking residues of NEO pesticides and assessed their potential health risks for preschool children (0-6 years old) by conducting a total diet study (TDS). It involved food sampling, preparation, analysis of pesticide residues, estimation of food consumption data, and assessment of food safety risks. Food sampling was conducted between March and June 2015. A total of 128 food samples were obtained from 4 parts of Taiwan. After the food had been prepared, the 128 samples were aggregated into 32 composite food items and the NEO residues analyzed. Acetamiprid had the highest detection rate of the NEO residues (59.4%), and the concentrations ranged from not detected to 80.5 µg/kg. The estimated daily intake (EDI) of NEO residues among preschool children was found to be lower than the adjusted acceptable daily intake (ADI) even for highly exposed groups. The results showed that NEO pesticides were primarily detected in preserved fruits, cherry tomato, rape, bell fruit, and baby bok choy. The main health risk posed by detected NEO residues at high consumption rates for preschool children was attributed to acetamiprid (34.20 %ADI) and imidacloprid (23.69 %ADI), respectively. Therefore, this research implicates that the present level of NEO residues in the diets for preschool children in Taiwan does not exceed 100 %ADI.


Asunto(s)
Exposición Dietética , Residuos de Plaguicidas/análisis , Niño , Preescolar , Dieta , Contaminación de Alimentos/análisis , Humanos , Lactante , Recién Nacido , Neonicotinoides , Medición de Riesgo , Taiwán , Verduras
16.
Infect Drug Resist ; 12: 3835-3847, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31827330

RESUMEN

BACKGROUND: Broad-scale evidence has shown the significant association between ambient air pollutants and the development of tuberculosis (TB). However, the impact of air quality on the risk of TB in Taiwan is still poorly understood. OBJECTIVE: To develop a probabilistic integrated population-level risk assessment approach for evaluating the contribution of ambient air pollution exposure to the risk of TB development among different regions of Taiwan. MATERIALS AND METHODS: A Bayesian-based probabilistic risk assessment model was implemented to link exposure concentrations of various air pollutants quantified in a probabilistic manner with the population-based exposure-response models developed by using an epidemiological investigation. RESULTS: The increment of the risk of TB occurred in a region with a higher level of air pollution, indicating a strong relationship between ambient air pollution exposures and TB incidences. Carbon monoxide (CO) exposure showed the highest population attributable fraction (PAF), followed by nitrogen oxides (NOX) and nitrogen dioxide (NO2) exposures. In a region with higher ambient air pollution, it is most likely (80% risk probability) that the contributions of CO exposure to development of TB were 1.6-12.2% (range of median PAFs), whereas NOX and NO2 exposures contributed 1.2-9.8% to developing TB. CONCLUSION: Our findings provide strong empirical support for the hypothesis and observations from the literature that poor air quality is highly likely to link aetiologically to the risk of TB. Therefore, substantial reductions in CO, NOX, and NO2 exposures are predicted to have health benefits to susceptible and latently infected individuals that provide complementary mitigation efforts in reducing the burden of TB. Considering that people continue to be exposed to both TB bacilli and ambient air pollutants, our approach can be applied for different countries/regions to identify which air pollutants contribute to a higher risk of TB in order to develop potential mitigation programs.

17.
Taiwan J Obstet Gynecol ; 58(5): 662-666, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31542089

RESUMEN

OBJECTIVE: Prenatal diagnosis of de novo segmental amplification or deletion by microarray-based comparative genomic hybridization (array CGH) is uncommon. The study aimed to know about the incidence, abnormal ultrasound findings, and pregnancy outcomes of prenatally diagnosed de novo segmental amplification or deletion by array CGH. MATERIALS AND METHODS: Between January 2014 and December 2017, we analyzed pregnant women who received prenatal array CGH (SurePrint G3 Human CGH Microarray Kit, 8 × 60K) at Chang Gung Memorial Hospital, Taiwan. Clinical data on maternal age, reason for fetal karyotyping, sonographic findings, gestational age at delivery, newborn birth weight, and associated anomalies, if any, were obtained by chart review. RESULTS: A total of 836 specimens (814 amniotic fluid samples, 4 cord blood samples, 18 chorionic villi samples) were analyzed by array CGH during the study period. Of the 56 cases with abnormal array CGH results, 40 had segmental amplification or deletion, 12 had trisomy, three had monosomy, and one had sex chromosome aneuploidy. Of these 40 cases with segmental amplification or deletion, 30 were inherited and 10 were de novo occurrences. The incidence of de novo segmental amplification or deletion was 1.2% (10/836). Abnormal prenatal ultrasound findings occurred in 40% (4/10) of de novo segmental amplification or deletion cases. Among these 10 pregnancies, nine were voluntarily terminated between 22 and 26 weeks of gestation and one was delivered at term. CONCLUSIONS: Prenatal diagnosis of de novo segmental amplification or deletion by array CGH raises important genetic counseling issues. In our series, the incidence of de novo segmental amplification or deletion in prenatal samples was 1.2%. Abnormal prenatal sonographic findings occurred in 40% of these de novo segmental amplification or deletion cases. Of these de novo segmental amplification or deletion pregnancies, 90% were voluntarily terminated.


Asunto(s)
Trastornos de los Cromosomas/diagnóstico , Hibridación Genómica Comparativa/métodos , Amplificación de Genes/genética , Análisis por Micromatrices/métodos , Diagnóstico Prenatal/métodos , Eliminación de Secuencia/genética , Adulto , Peso al Nacer , Aberraciones Cromosómicas/embriología , Trastornos de los Cromosomas/embriología , Trastornos de los Cromosomas/genética , Femenino , Edad Gestacional , Humanos , Recién Nacido , Cariotipificación , Edad Materna , Técnicas de Amplificación de Ácido Nucleico , Embarazo , Resultado del Embarazo , Estudios Retrospectivos , Taiwán , Ultrasonografía Prenatal
18.
Toxicol Lett ; 314: 75-81, 2019 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-31284020

RESUMEN

Aflatoxin is a fungal secondary metabolite with high toxicity that is capable of contaminating various types of food crops. It has been identified as a Group 1 human carcinogen by the International Agency for Research on Cancer. Chronic aflatoxin exposure has caused worldwide concern as a matter of public food safety. Peanuts and peanut products are the major sources of aflatoxin exposure. Therefore, some reduction interventions have been developed to minimize contamination throughout the peanut production chain. The purpose of this study is to estimate the efficacy of interventions in reducing the health impact of hepatocellular carcinoma caused by aflatoxin contamination in peanuts. The estimated total Disability-Adjusted Life Years (DALYs) were calculated using FDA-iRISK software. Six aflatoxin reduction strategies were evaluated, including good agricultural practice (GAP), biocontrol, Purdue Improved Crop Storage packaging, basic processing, ozonolysis, and ultraviolet irradiation. The results indicated that basic processing could prevent huge public health loss of 4,079.7-21,833 total DALYs per year. In addition, GAP and biocontrol were both found to be effective strategies in the farm field. Meanwhile, the other three interventions had limited effectiveness in reducing total DALYs. In conclusion, this study could help farmers, processing plants, and government policy makers to alleviate aflatoxin contamination issues in the peanut production chain.


Asunto(s)
Aflatoxinas/efectos adversos , Arachis/microbiología , Carcinoma Hepatocelular/prevención & control , Productos Agrícolas/microbiología , Exposición Dietética/efectos adversos , Exposición Dietética/prevención & control , Microbiología de Alimentos/métodos , Enfermedades Transmitidas por los Alimentos/prevención & control , Neoplasias Hepáticas/prevención & control , Años de Vida Ajustados por Calidad de Vida , Agentes de Control Biológico , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiología , Costo de Enfermedad , Evaluación de la Discapacidad , Manipulación de Alimentos/métodos , Almacenamiento de Alimentos , Enfermedades Transmitidas por los Alimentos/diagnóstico , Enfermedades Transmitidas por los Alimentos/epidemiología , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/epidemiología , Ozono/química , Factores Protectores , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Rayos Ultravioleta
20.
Infect Drug Resist ; 11: 1423-1435, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30233221

RESUMEN

BACKGROUND: The high prevalence of dengue in Taiwan and the consecutive large dengue outbreaks in the period 2014-2015 suggest that current control interventions are suboptimal. Understanding the effect of control effort is crucial to inform future control strategies. OBJECTIVES: We developed a framework to measure season-based health burden risk from 2001 to 2014. We reconstructed various intervention coverage to assess the attributable effect of dengue infection control efforts. MATERIALS AND METHODS: A dengue-mosquito-human transmission dynamic was used to quantify the vector-host interactions and to estimate the disease epidemics. We used disability-adjusted life years (DALYs) to assess health burden risk. A temperature-basic reproduction number (R0)-DALYs relationship was constructed to examine the potential impacts of temperature on health burden. Finally, a health burden risk model linked a control measure model to evaluate the effect of dengue control interventions. RESULTS: We showed that R0 and DALYs peaked at 25°C with estimates of 2.37 and 1387, respectively. Results indicated that most dengue cases occurred in fall with estimated DALYs of 323 (267-379, 95% CI) at 50% risk probability. We found that repellent spray had by far the largest control effect with an effectiveness of ~71% in all seasons. Pesticide spray and container clean-up have both made important contributions to reducing prevalence/incidence. Repellent, pesticide spray, container clean-up together with Wolbachia infection suppress dengue outbreak by ~90%. CONCLUSION: Our presented modeling framework provides a useful tool to measure dengue health burden risk and to quantify the effect of dengue control on dengue infection prevalence and disease incidence in the southern region of Taiwan.

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