Untargeted metabolomics using liquid chromatography-high resolution mass spectrometry and chemometrics for analysis of non-halal meats adulteration in beef meat.

OBJECTIVE: The adulteration of raw beef (BMr) with dog meat (DMr) and pork (PMr) becomes a serious problem because it is associated with halal status, quality, and safety of meats. This research aimed to develop an effective authentication method to detect non-halal meats (dog meat and pork) in beef using metabolomics approach. METHODS: Liquid chromatography-high resolution mass spectrometry (LC-HRMS) using untargeted approach combined with chemometrics was applied for analysis non-halal meats in BMr. RESULTS: The untargeted metabolomics approach successfully identified various metabolites in BMr DMr, PMr, and their mixtures. The discrimination and classification between authentic BMr and those adulterated with DMr and PMr were successfully determined using partial least square-discriminant analysis (PLS-DA) with high accuracy. All BMr samples containing non-halal meats could be differentiated from authentic BMr. A number of discriminating metabolites with potential as biomarkers to discriminate BMr in the mixtures with DMr and PMr could be identified from the analysis of variable importance for projection value. Partial least square (PLS) and orthogonal PLS (OPLS) regression using discriminating metabolites showed high accuracy (R2>0.990) and high precision (both RMSEC and RMSEE <5%) in predicting the concentration of DMr and PMr present in beef indicating that the discriminating metabolites were good predictors. The developed untargeted LC-HRMS metabolomics and chemometrics successfully identified non-halal meats adulteration (DMr and PMr) in beef with high sensitivity up to 0.1% (w/w). CONCLUSION: A combination of LC-HRMS untargeted metabolomic and chemometrics promises to be an effective analytical technique for halal authenticity testing of meats. This method could be further standardized and proposed as a method for halal authentication of meats.

Children's Perception and Belief about Medicines: Effectiveness and Its Autonomy.

BACKGROUND: The use of medicines in children is usually always under the supervision of parents. Children are considered not to understand the concept of medicine properly. Children's perceptions of medicine are mostly formed from everyday experience. This can have an impact on children's beliefs about medicines which they are also required to be active and rational medicine users. AIM: This study aims to look at children's perceptions and beliefs about medicines, especially in the perspective of medicine efficacy and children's autonomy in using them. METHOD: The study was conducted with an analytical method with a cross-sectional approach using a questionnaire instrument in grade V elementary school children in Padang City, Indonesia. The total sample size obtained was 503 students. RESULTS: Children still think that medicine efficacy is influenced by taste, colour, size, medicine price, a place to buy medicine and how to get medication. 10.1% of children have stored the medicine at home, and 48.5% of children always depends on waited for their parents when they wanted to take medicine. Regarding children's access to medicines, 11.5% of children have bought their own over-the-counter medicine to a pharmacy or medicine store without the parents' knowledge. 31.4% of children have taken medicine at home without the parents' knowledge. CONCLUSION: The results of this study indicate that children's perceptions of medicine efficacy are still very limited. Even though the child has used the medicine alone in a limited way, the child's autonomy in using the medicine still needs to be monitored by the parent. Therefore, this is the reason for the need for medical education given to children, especially in schools as an integral part of health education.

Epidermal Growth Factor and Adenosine Triphosphate Induce Natrium Iodide Symporter Expression in Breast Cancer Cell Lines.

AIM: This study aims to investigate the effect of ATP, EGF and combination of those two to the Natrium Iodide Symporter (NIS) expression in MCF7, SKBR3 and HaCaT cell lines. METHODS: MCF7, SKBR3 and HaCaT cell lines were treated with ATP, EGF and combination of those two for 6, 12 and 24 hours. The expression of NIS mRNA was measured through quantitative-reverse transcription-polymerase chain reaction (qRT-PCR). The NIS protein expression was confirmed by immunocytofluorescence. RESULTS: NIS mRNA was expressed in SKBR3 and HaCaT cell lines but not in MCF7. The levels of NIS mRNA expression, after treatment by epidermal growth factor (EGF), adenosine Tri-Phosphate (ATP) or the combination of both for 6 and 12 hours were not significantly different from those of untreated cells. However, the treatment by a combination of ATP and EGF for 24 hours increases the level of NIS mRNA expression by 1.6 fold higher than that of the untreated cells (1.6241 ± 0.3, p < 0.05) and protein NIS expression increase significantly by the treatment than untreated cells (P < 0.05). CONCLUSION: The level of NIS expression varies among the different subtypes of breast cancer cell lines. MCF7 cell line is representing the luminal A subtype of breast cancer does not express NIS. Only SKBR3 cell line express NIS and this subtype might be suitable to receive radioiodine therapy as those cells expressing NIS. A combination treatment of EGF and ATP increases the expression of NIS mRNA and protein at the membrane in SKBR3 cells.

The Knowledge and Attitudes about the Benefits, Risks and Use of Medicine in Aged Primary Students in Indonesia.

BACKGROUND: Medication always has a ratio of benefits and risks to become a safety measure. Therefore, its use must be careful, especially for children, because it can potentially occur drug incidents in children. As drug users, children are required to be active in using it, but children's knowledge and attitudes about benefits, risks (dangers) and use of medicine are still very shallow and fragmented. AIM: This study aims to look at the description of children's knowledge and attitudes about medicine from the perspective of the benefits, risks or dangers and use of medicine and the factors that influence them. MATERIAL AND METHODS: The study was conducted by the analytic method with a cross-sectional approach using a questionnaire instrument in grade V elementary school-age children in Padang City, Indonesia. The total sample size obtained was 503 students. RESULTS: The results showed that children's knowledge of medicine was generally categorised as low, with an average score of 4.70 (SD 1.82) from a scale of 9. Knowledge of drug use was much lower, namely the average score of 1.21 (0.74), followed by knowledge of drug hazards an average score of 1.69 (1.03) and drug benefits an average score of 1.80 (0.69). Age variables, address of residence, family income, the existence of families working as health workers and sources of drug information significantly influence students knowledge (P < 0.05). Whereas students attitudes towards medicine tend to be more positive with an average score of 7.18 (1.77), where the average score of attitudes towards benefits, risks (hazards) and drug use are 1.79 (0.46), respectively, 1.10 (0.58) and 4.29 (1.37). Address of residence, companion during illness, achievement in school and experience in hospital care have a significant effect on student attitudes (P < 0.05). CONCLUSION: This study concluded that indicate that students knowledge of benefits, risks and use of medicine is still low and very limited. While related to student attitudes, in general, it tends to be more positive, except about the dangers of medicine that show a negative attitude. The low level of knowledge and limited attitudes of children are the reason for the need for drug education given to children, especially in schools as an integral part of health education.

Antiplasmodial and other constituents from four Indonesian Garcinia spp.

Phytochemical investigations of four Garcinia spp. from Indonesia, i.e. Garcinia griffithii T. Anderson, Garcinia celebica L., Garcinia cornea L. and Garcinia cymosa K. Schum (Clusiaceae), have resulted in the isolation of a xanthone, 1,5-dihydroxy-3,6-dimethoxy-2,7-diprenylxanthone, 1,7-dihydroxyxanthone, isoxanthochymol, beta-sitosterol-3-O-beta-D-glucoside and stigmasterol-3-O-beta-D-glucoside from the stem bark of G. griffithii; friedelin and 3beta-hydroxy-23-oxo-9,16-lanostadien-26-oic acid or garcihombronane D from leaves of G. celebica; 23-hydroxy-3-oxo-cycloart-24-en-26-oic acid and epicatechin from stem bark of G. cornea; (+/-)-morelloflavone, morelloflavone-7-O-beta-D-glucoside or fukugiside, the triterpene 3beta-hydroxy-5-glutinen-28-oic acid and canophyllol from stem bark of G. cymosa. The xanthone and garcihombronane D displayed a selective activity against Plasmodium falciparum; isoxanthochymol and the triterpene beta-hydroxy-5-glutinen-28-oic acid a broad but non-selective antiprotozoal activity.