Search or add a thesis

Advanced Search (Beta)
Home > Quantification of Endocrine Disruptors in Locally Available Child Care Products and Their Health Risk Assessment in Fish

Quantification of Endocrine Disruptors in Locally Available Child Care Products and Their Health Risk Assessment in Fish

Thesis Info

Access Option

External Link

Author

Rashid, Misbah

Program

PhD

Institute

Lahore College for Women University

City

Lahore

Province

Punjab

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Environmental Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/11516/1/Misbah%20Rashid%20envir%20sci%202019%20lcwu%20lhr.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676724961756

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


Baby care products are mostly used for hygienic and aesthetic purposes worldwide. Phthalates are added as softener and parabens as antimicrobial agents in such products. These two chemicals and their derivatives are included in the list of endocrine disrupting compounds which cause malformation in the production of such hormones that is essential for normal growth and reproduction. Babies are particularly vulnerable to substances that may affect their growth and developmental process. This study was conducted to assess the health risk of children and evaluate dose related endocrine disrupting activity of baby care products by using fish as a model. The level of parabens and phthalates were quantified by using HPLC and GCMS in different brands of baby gift packs and others commonly available synthetic, herbal baby care products and organic oils. DMP and DnOP were detected in 96%, while DEP and DBP detected in only 76% and 57% of subjected products respectively. In the mean value of DMP (1867±180 µg/g), DEP (403.6±52.4 µg/g), DBP (243.7±88.9 µg/g) and DnOP (351.3±34.6 µg/g) were quantified in all products. The mean value of MeP (345.6±63.3 µg/g), EtP (77.83±18 µg/g), PrP (132.7±27.4 µg/g) and BuP (32.9±9.08 µg/g) were quantified in selected products. LOD and LOQ for phthalates and paraben esters were also determined. The total daily exposure dose by using all types of products for phthalates DMP, DEP, DBP was observed to be 32.7, 16.04, 6.34 µg/d respectively for infants and for toddlers it was 23.7, 11.65, 4.73 µg/d respectively. The total paraben exposure by using all type of products for MeP, EtP, PrP, BuP was 543.5, 125.7, 261.7, 53.3 µg/d for infants and 394.9, 91, 188.7, 39.3 µg/d for toddlers respectively. Fish were exposed to phthalates, parabens and their mixture for a period of 30 days under semi-static laboratory conditions at a dose based on mean values quantified in baby care products. The endocrine disruptive activity of phthalates, parabens and their mixture were evaluated by hematological analysis, cytogenotoxicity in terms of micronucleus test, comet assay and differential gene regulation of HPGL axis in the control (without exposure) and treated fish groups. The significant maximum decrease in RBC, PCV, Hb and PLT were observed in all treated groups as compared to the control. Fluctuations in MCV, MCHC, MCH values with respect to control were also noted in fish of all exposed groups. Mean frequencies of all nuclear anomalies were high in phthalate mixture group and paraben mixture group (32.16±13.80) and (25.60±10.80), respectively with reference to individual phthalate and paraben esters. In mean value of anomalies in all treated groups, lower value was of DBP group (16.33±4.92) whereas the greater mean value was of 4 mixture group (62.8±27.2) due to the cumulative effect of all exposed chemicals in the mixture. In other nuclear anomalies, lobed nuclei and karryorehixes were recorded in the highest frequencies. Karyolysis was the least observed nuclear alterations in almost all treated groups. The DNA damage was detected in the peripheral blood cell of juvenile fresh water fish Labeo rohita using comet assay. The maximum increase in tail length was observed in phthalate mixture group (315±90.51 px) as compared to other individual phthalates and control (0.73±0.59 px). There was also a remarkable difference in tail DNA% of control (7.16±6.32%), paraben mixture group (33.78±13.99%) and 4 mixture treated group fish (47.70±19.92%) at p<0.05 that clearly indicated DNA damage in the exposed fish was chemical specific and concentration dependent. A tail moment of 4 mixture group (88.90±58.8) was statistically significantly different from control (0.06±0.38) at p<0.05. The differential expression of the genes related to HPGL axis revealed statistically highly significant differences at p<0.05 in the expression levels of VTG, GnRHR, CYP19a and CYP19b of Labeo rohita exposed to phthalates and parabens esters. The Vtg was highly expressed in paraben mixture group (27.3±12.5) as compared to the control (8.24±4.89) whereas it was a down-regulation in fish exposed to phthalate and phthalate mixture groups. There was a down-regulation of Cyp19b in all treated group fish with respect to the control fish but it was 84-fold greater than the control in paraben mixture. The expression of the GnRHR gene in phthalate mixture exposed fish was 3.23-fold higher than the control fish and was down-regulated in all stressed group fish. There was a down-regulation in the expression of Cyp19a genes in DBP group fish while there was an up-regulation in phthalate mixture, paraben mixture and 4 mix groups as compared to the control group fish. In conclusion, the daily exposure dose of phthalates and parabens by using each leave on and wash off products calculated in this study was high so regular use of these products on daily basis can lead to carcinogenicity. The significant DNA damage and cytogenotoxicity observed in all the treatment fish groups due to chronic exposure of phthalates and parabens are suggestive of DNA damage and genetic makeup alteration in children by using baby care products contaminated with phthalates and parabens.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

المبحث الرابع: شعرها

المبحث الرابع: شعرها

 حصلت الشاعرۃ علی فن الشعر منذ صغرھا، وخاصۃً من أجدادها لأمها، وحسن عسکري لہ الدور الکبیر في تربیۃ بروین شاکر وتھذیبھا من الناحیۃ الأدبیۃ کانت الشاعرۃ تحب ان تقرأ من الشعر أو ما شابہ ذلک من الجرائد والمجلات وکانت تحب ان تسمع القصائد والأغاني في الرادیو وکانت تحب ان تُردد خلف الأغاني والاشعار۔ وعندما وصلت مرحلۃ الثانویۃ تقابلت مع الشاعرۃ المعروفۃ عرفانہ عزیز، فقامت عرفانہ بتربیۃ بروین من الناحیۃ الأدبیۃ والشعریۃ وتھذیب ألفاظھا، ومنحتھا ببعض النصائح والإرشادات التي أفادتھا في مستقبلھا۔ وأول عمل شعري لبروین شاکر کان في 6 - سبتمبر وکانت قصیدتھا الأولیٰ المعنونۃ ب(صبحِ وطن) ۔ (صباح الوطن) وکانت حول 6- سبتمبر، ویقول الدکتور ناظم جعفري عن بروین بأنھا تربت وترعرعت تحت رعایۃ حسن عسکري[1].

 تعرفت الشاعرۃ علی أحمد ندیم قاسمي عن طریق منتج رادیو پاکستان یاور مھدي ویقول أحمد ندیم قاسمي وصلتني رسالۃ من شاعر شاب عبیداﷲ علیم في 1971م وفیہ بعض أشعار لبروین شاکر ویقول ھذا الشاب عن بروین شاکر أنھا شابۃ بارعۃ ولھا قصائد رائعۃ، فیقول أحمد ندیم عندما وصتلني أشعارھا وبعد قراءتھا صححتُ بعض الأخطاء البسیطۃ ثم تم نشرها في 1971م[2]، وساعدھا الأستاذ القاسمي في المھارۃ الفنیۃ والشعریۃ وأعطاھا الکثیر من النصائح والإرشادات المھمۃ التي ساعدتھا في براعتھا وتھذیب لُغۃ الشعر وتطور أسالبیھا الشعریۃ۔

 



[1] الدکتور ناظم جعفري، خوشبو کی ہمسفر، ص78ـ79

[2] أحمد ندیم قاسمي، خوشبو کی ہمسفر، ص17۔

Relationship on Nursing Performance of Patient Satisfaction in Installation of Hospital in General Hospital Deli Serdang Region

Patients assess the efficiency of nursing care by the fulfillment of their desires. This thesis was to identify the correlation between nurses' inpatient service quality and patient satisfaction. Quantitative and cross-sectional research This sample was made up of all patients admitted to the Deli Serdang Hospital, which indicates that about 320 patients were hospitalized for [for an average of] 3 days.5 days. As many as 77 human population samples of which were chosen to be included in the study All data derived from interviews and observations using a statistical model with a 5% significance level of probability, evaluated using the Multiple Linear Regression Approach The multiple logistic statistical evidence indicates that the influence of the vector service efficiency (p = 0.016) and connectivity (p = 0.016) is important (p = 0.043) on patient satisfaction. The level of contact has the biggest impact on patient satisfaction at The general ward in the Dedun restorative In-Patient Deli Serdang Hospital The results of this study are that service quality, connectivity, tempo, and capacity have an impact on customer satisfaction.

Softwaredefect Prediction Model Using Multi-Layer Feed Forwardneural Networks

Software defect prediction techniques are being focused by many researchers due to its effectiveness for cost reduction in testing process. Most of the software defect dataset contains uncleaned, noisy, high dimensional and imbalance data. These problems reduce the prediction accuracy of a classifier. In this paper, a framework is proposed which combines approaches to deal with all these problems. This framework comprises of four stages 1) data preprocessing 2) feature selection (FS) 3) class balancing, and 4) classification through ensemble learning. Normalization is performed on cleaned datasets. Multilayer perceptron (MLP) is used as subset evaluator in FS process with six search methods Best first (BF), Greedy Stepwise (GS), Genetic Search (GA), Particle swam Optimization Search (PSO), Rank Search (RS) and Linear forward selection (LFS). Resample and SMOTE algorithm are used for class balancing. In classification stacking ensemble model is applied to build model on 80% of the input data. Here meta classifier is set to MLP and base classifiers include decision tree (J48), Random forest (RF), Support vector machine (SVM), K nearest neighbor (kNN) and Bayes Net (BN). Parameter tuning of meta and base classifier is also performed. Performance is evaluated on NASA MDP using precision, recall, F-measure, MCC, ROC and accuracy. Results have shown that the proposed method showed significant improvement is defect prediction compared to base classifiers.