Displaying publications 181 - 200 of 344 in total

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  1. Yong, Kang Cheah
    MyJurnal
    In light of the increases in alcohol-induced diseases and social problems, the present study sets out to examine the factors affecting alcohol consumption among adults in Penang (Malaysia) using a cross-sectional survey sample consisting of 398 respondents. The results of the logistic regression analysis show that age, gender, ethnicity, marital status and smoking are significantly associated with alcohol consumption. In particular, males (OR: 3.720; 95% CI: 1.939, 7.136), Chinese (OR: 3.628; 95% CI: 1.808, 7.279) and smokers (OR: 5.083; 95% CI: 1.876, 13.774) are more likely to consume alcohol than others, whereas, old individuals (OR: 0.971; 95% CI: 0.941, 1.002), Malays (OR: 0.059; 95% CI: 0.021, 0.165) and married individuals (OR: 0.419; 95% CI: 0.211, 0.833) are less likely to consume alcohol than others. Based on the findings of the present study, several intervention strategies toward reducing alcohol consumption are proposed. Specifically, these strategies should be targeted at young individuals, males, Chinese, unmarried individuals and smokers.
    Matched MeSH terms: Alcohol Drinking
  2. Azlanudin Azman, Ismail Sagap
    MyJurnal
    Colonic diverticula is observed in over 60% of the western population aged over 80 where up to 30% will eventually be symptomatic and may develop complications. The natural history and etiology of colonic diverticula have been well described. However, predictive indicators of complicated diverticular disease are not known thus preventing the prophylactic treatment of this subset of patients,. The aim of this study was to observe patients with complicated diverticular disease in order to identify common factors associated with recurrent complications. All hospital admissions from January 2005 to December 2008 for complications of diverticular disease were recruited. Using logistic regression, demographic data and factors such as clinical presentation, nature of complication, lifestyle, concomitant medical illness and medications that may be associated with recurrent episodes of complications were analyzed. A total of 121 patients were diagnosed with complicated diverticular disease during the study period with 24 patients having recurrent complications. Logistic regression analysis performed after controlling for confounders found active smoking (p=0.006) and alcohol consumption (p=0.036) along with underlying diabetes (p=0.031) and dyslipidemia (p=0.039) significantly associated with an increased risk of recurrent complications. We therefore concluded that smoking, alcohol consumption, diabetes mellitus and dyslipidemia are associated with recurrent complicated colonic diverticular disease. As these are modifiable risk factors, they should be sought for during the presentation of the first attack. Aggressive control of these factors will help in reducing the risk of recurrent complications.
    Matched MeSH terms: Alcohol Drinking
  3. Singh SK, Enzhong L, Reidpath DD, Allotey P
    Public Health, 2017 Mar;144:78-85.
    PMID: 28274388 DOI: 10.1016/j.puhe.2016.11.022
    OBJECTIVE: To explore the initiating factors of waterpipe tobacco smoking (WTS) among youth.

    STUDY DESIGN: The analytic framework for this scoping review was performed using the methodology outlined by Arksey and O'Malley, which includes identification of the research question, study selection, charting the data, collating, summarizing and reporting the results that were primarily guided by the research question; 'what is known about the initiation of shisha smoking among youth?'

    METHODS: Electronic databases such as Cochrane, MEDLINE and PsycINFO were used to search for relevant articles. Articles included were all in English and published within the year of 2006 to 2015. Inclusion criteria; i) age range of 10 to 29 years; ii) examined the reasons why youth started or tried WTS; iii) in full text. Therefore, 26 articles were included in this scoping review.

    RESULTS: This review has identified and classified the initiating factors of WTS among youth in four subtopics: individual factors, interpersonal influences, cigarettes and alcohol use, and media influences. Individual factors and interpersonal influences played an important role in initiation factors of WTS among youth.

    CONCLUSION: This study concludes that public health professionals within the Southeast Asia region need to promote innovative preventive measures through peer-to-peer led interventions that are also easily assessable on social media platforms. The public health messages need to address the misconceptions of risk associated to WTS use.
    Matched MeSH terms: Alcohol Drinking
  4. Hajissa K, Muhajir AEMA, Eshag HA, Alfadel A, Nahied E, Dahab R, et al.
    BMC Res Notes, 2018 Oct 31;11(1):779.
    PMID: 30382901 DOI: 10.1186/s13104-018-3871-y
    OBJECTIVE: Schistosomiasis remains one of the most common parasitic diseases worldwide. This is a cross-sectional study aimed to determine the prevalence of schistosomiasis and its associated risk factors among primary school children in Um-Asher area. The study was conducted among 170 primary school students in Um-Asher area from November 2017 to February 2018. Urine and stool samples were collected and examined for schistosomiasis infections. Moreover, data on sociodemographic characteristics and associated risk factors were obtained using a questionnaire.

    RESULTS: The overall prevalence of Schistosoma haematobium was 12.9%, whereas that of Schistosoma mansoni was 2.95%. Additionally, the males had higher prevalence (60%) of S. mansoni than females (40%). However, both gender were equally infected with S. haematobium (50%). With regard to risk factors, distance of residence from water source and source of drinking water are relatively associated with the infection.

    Matched MeSH terms: Drinking Water
  5. Muhammad Adil ZA, Nur Zawani J, Hazariah AH, Rao G, Zailiza S, Mohd Nasir H
    Med J Malaysia, 2019 Oct;74(5):413-417.
    PMID: 31649218
    INTRODUCTION: A methanol outbreak occurred in the district of Hulu Langat on 16 September 2018. The Hulu Langat District Health Office received 25 notifications of a suspected methanol poisoning from Kajang and Ampang Hospital. An outbreak investigation was done to determine the source followed by a preventive and control measure.

    METHOD: Active case detection was done on cases living quarters and workplaces. Patients were interviewed, and their blood and urine samples were sent for methanol analysis. Samples of suspected alcoholic beverages were also sent for analysis. A suspected case was defined as any person presented with clinical symptoms with a history of consuming alcoholic beverages within five days before symptoms and high anion gap metabolic acidosis. A confirmed case was defined as a suspected case with positive blood and urine methanol.

    RESULTS: In total, there were 25 suspected cases, of which 12 cases were confirmed. The calculated attack rate was 48%. There were six mortalities (50%) secondary to severe metabolic acidosis. The most common presenting symptom was vomiting (75%) and abdominal pain (41.7%). These cases were linked to consumption of illicitly produced alcohol. Samples of the alcoholic drinks were positive containing high level of methanol.

    CONCLUSION: The methanol outbreak in the Hulu Langat was successfully managed. Appropriate control and prevention measures were taken, including health promotion and joint enforcement activities. Steps were taken successfully through collaborations with multiple agencies and cooperation with Selangor Health Departments and the Ministry of Health. Continuous surveillance on the product of liquor, and health promotion are essential to prevent a similar outbreak from happening again in future.

    Matched MeSH terms: Alcohol Drinking
  6. Aamir K, Khan HU, Hossain CF, Afrin MR, Shaik I, Salleh N, et al.
    PeerJ, 2019;7:e8045.
    PMID: 31772835 DOI: 10.7717/peerj.8045
    Background: Arjunolic acid (AA) is a potent phytochemical with wider pharmacological activities. Despite potential medicinal properties on various in vitro and in vivo studies, there is still a dearth of scientific data related to its safety profile and toxicological parameters. The current study aimed to investigate acute toxicity of AA in normal female Sprague Dawley rats.

    Methods: In this study, AA was administered orally at an individual dose of 300 and 2000 mg/kg body weight to group 1 and 2 respectively, while group 3 served as normal control. All the animals were observed for 2 weeks to determine any behavioral and physical changes. On day 15, blood was collected for hematological and biochemical investigation, later animals from all the three groups were euthanized to harvest and store essential organs for histopathological analysis. Four different staining techniques; hematoxylin and eosin, Masson trichrome, Periodic acid Schiff and Oil O Red were used to investigate any alterations in different tissues through microscopical observation.

    Results: The results of the study showed no morbidity and mortality at two different dosage of AA treatment. Daily food & water intake, body weight, relative organ weight, hematological and biochemical parameters were detected to be normal with no severe alteration seen through microscopical investigation in the structure of harvested tissues. Our findings support the safety profile of AA, which was well tolerated at higher dose. Thus, an in-detail study on the subacute disease model is warranted.

    Matched MeSH terms: Drinking
  7. Wen Min Yun, Yu Bin Ho, Eugenie Sin Sing Tan, Vivien How
    MyJurnal
    Bisphenol A (BPA) is a controversial plastics ingredient used mainly in the production of polycarbonate plastics (PC) and epoxy resins that widely used nowadays in food and drink packaging. Even though BPA is not involved in polyethylene terephthalate (PET) manufacturing, recent study had reported the present of BPA in PET water bottle. This study was conducted to investigate effects storage conditions on release of BPA from PC and PET bottled water as well as to assess health risks associated with consumption. Methods: Solid phase extraction (SPE) was used to extract the samples, followed by analysis using ultra high performance liquid chromatography with fluorescence detector (UHPLC-FLD). The possibility of developing chronic non-carcinogenic health risk among consumers of bottled water was evaluated using hazard quotient (HQ). Results: Results showed that BPA migrated from PC and PET water bottles at concentrations ranging from 9.13 to 257.67 ng/L and 11.53 ng/L to 269.87 ng/L respectively. Concentrations of BPA were higher in PET bottled water compared to PC bottled water across all storage conditions. Higher storage temperature and longer storage duration increased BPA concentrations in PC and PET bottled water. Concentrations of BPA in bottled water which were kept in a car and were exposed to sunlight were higher than control samples which were stored indoor at room temperature. Conclusion: No significant chronic non-carcinogenic health risks were calculated for daily ingestion of BPA-contaminated bottled water; calculated HQ was less than one.
    Matched MeSH terms: Drinking Water
  8. Bauman A, Phongsavan P, Schoeppe S, Chey T
    ISBN: 978-92-9061-474-6
    Citation: Bauman A, Phongsavan P, Schoeppe S, Chey T. Noncommunicable disease risk factors and socioeconomic inequalities – what are the links? A multicountry analysis of noncommunicable disease surveillance data. Report to the WHO Regional Office for the Western Pacific. Geneva: World Health Organization; 2010

    Malaysia as contributing authors and in full text.
    Matched MeSH terms: Alcohol Drinking
  9. Gani SA, Muhammad SA, Kura AU, Barahuie F, Hussein MZ, Fakurazi S
    PLoS One, 2019;14(5):e0217009.
    PMID: 31141523 DOI: 10.1371/journal.pone.0217009
    Researchers investigating cancer chemotherapy and management continue to search for agents that selectively kill malignant cells and leave healthy neighboring cells intact. Natural products provide relevant resources for anti-cancer drug discovery. However, the physicochemical properties of these compounds limit their efficient uptake and bioavailability. We introduced a nanocarrier system, namely, zinc-aluminum-layered double hydroxide (ZnAl-LDH) intercalated with protocatechuic acid. In this study, the efficacy and toxicity of protocatechuic acid intercalated in zinc aluminum-layered double hydroxide nanoparticles (PCA-ZnAl) against diethylnitrosamine/phenobarbital (DEN/PB)-induced hepatocellular carcinoma (HCC) in BALB/c mice was evaluated. HCC in male mice was induced by a single-dose intraperitoneal administration of DEN and was promoted by the introduction of PB via drinking water for 12 weeks. HCC induction was confirmed after the DEN/PB introduction period by measurement of the elevated level of serum α-feto protein (AFP). The results showed that the level of α-fetoprotein was significantly reduced in PCA-ZnAl (350±43.90 ng/mL), doxorubicin (DOX) (290±20.52 ng/mL) and ZnAl-LDH (390±19.65 ng/mL) treated animals compared to HCC mice treated with normal saline (580.4± 52.04 ng/mL). Superoxide dismutase (SOD), catalase (CAT), and glutathione (GSH) levels were significantly increased, whereas the level of lipid peroxidation was significantly decreased in HCC mice treated with DOX, PCA-ZnAl and ZnAl-LDH compared with those in HCC mice treated with saline. Restoration of hepatocyte morphology was observed following treatment that was comparable to that in the normal control group. Deterioration of hepatic cells and a significant increase of aspartate transaminase (AST), alanine transaminase (ALT), and alkaline phosphatase (ALP) were observed in the cancer-induced untreated group compared with that in the groups treated with nanoparticles. The histopathological features of the liver obtained from PCA-ZnAl-treated mice showed a uniform size with a similar distribution of the nuclear-cytoplasmic ratio and nucleus centrally located in the cytoplasm, similar to the normal liver cells. The results underscored the potential of PCA-ZnAl for the treatment of hepatocellular carcinoma.
    Matched MeSH terms: Drinking Water
  10. Praveena SM, Mohd Rashid MZ, Mohd Nasir FA, Sze Yee W, Aris AZ
    Ecotoxicol Environ Saf, 2019 Sep 30;180:549-556.
    PMID: 31128553 DOI: 10.1016/j.ecoenv.2019.05.051
    Occurrence of pharmaceutical residues in drinking water has been widely reported in countries that have registered steady economic growth. This can exert concerns among the general consumers, prompting them to explore the potential human health risks associated with continuous exposure to pharmaceuticals. However, such an occurrence is rarely reported in developing or under-developed countries. To give more contexts, this study looked at the presence of nine pharmaceutical residues in drinking water (amoxicillin, caffeine, chloramphenicol, ciprofloxacin, dexamethasone, diclofenac, nitrofurazone, sulfamethoxazole, and triclosan) at Putrajaya residential area in Malaysia. Additionally, the potential health risks associated with contaminated drinking water were investigated. This study has found the presence of pharmaceutical residue concentrations up to 0.38 ng/L, with the highest concentration of caffeine (0.38 ng/L) and the lowest concentration of diclofenac (0.14 ng/L). In comparison, all the nine pharmaceutical residues were substantially lower than previously reported studies. In general, Hazard Quotient (HQ) values indicated that low potential health hazards were present for all age groups. Nevertheless, quantitative occurrences of pharmaceutical residues in drinking water will help guide future toxicological studies to examine other chronic effects, while canvassing for proper framework to look into the water risk management and regulation in Malaysia.
    Matched MeSH terms: Drinking Water
  11. Nam KD, Van NB, Hoang LV, Duc TP, Thi Ha TT, Tuan VT, et al.
    Heliyon, 2020 Feb;6(2):e03383.
    PMID: 32072063 DOI: 10.1016/j.heliyon.2020.e03383
    Background: Hypertension (HTN) significantly contributes to global disease burden, and its prevalence varies amongst different countries and regions. This work is aimed to characterize the hypertensive prevalence and identify risk factors for HTN among the residents in five locations (four communes and one town) of Moc Chau district (Son La province, Vietnam).

    Methods: A cross-sectional study with a cross-sectional methodology was done in selected places from August 2018 to December 2018. We interviewed 197 participants aged equal to or more than 18 years old and measured their blood pressure (BP). Univariate and multivariate logistic regression were applied.

    Results: The overall HTN prevalence of 30.0% was recorded. The differences of HTN prevalence rates were seen by several characters including age groups (p <0.001), accompanying disease (p <0.001) and alcohol drinking (p <0.05). Factors independently associated with hypertension were age (ORs: 3.1 [1.1-9.1]; 6.1 [1.7-22.3]), much salty consumption (OR: 2.6 [1.1-6.6]), alcohol use (OR: 3.1 [1.2-8.1]), HTN familial history (OR: 4.2 [1.3-13.3]) and at least one suffering disease (OR: 5.2 [2.1-12.7]).

    Conclusions: Thus, this study highlighted the high overall HTN prevalence in the Vietnam Northwestern region. Significant differences of HTN rate were observed among several characteristics such as age groups, accompanying disease and alcohol drinking. Age group, much salty consumption, alcohol use, hypertension familial history and at least one suffering disease were risk factors for HTN in study group.

    Matched MeSH terms: Alcohol Drinking
  12. Wan Mohtar WHM, Abdul Maulud KN, Muhammad NS, Sharil S, Yaseen ZM
    Environ Pollut, 2019 May;248:133-144.
    PMID: 30784832 DOI: 10.1016/j.envpol.2019.02.011
    Malaysia depends heavily on rivers as a source for water supply, irrigation, and sustaining the livelihood of local communities. The evolution of land use in urban areas due to rapid development and the continuous problem of illegal discharge have had a serious adverse impact on the health of the country's waterways. Klang River requires extensive rehabilitation and remediation before its water could be utilised for a variety of purposes. A reliable and rigorous remediation work plan is needed to identify the sources and locations of streams that are constantly polluted. This study attempts to investigate the feasibility of utilising a temporal and spatial risk quotient (RQ) based analysis to make an accurate assessment of the current condition of the tributaries in the Klang River catchment area. The study relies on existing data sets on Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), and Ammonia (NH3) to evaluate the water quality at thirty strategic locations. Analysis of ammonia pollution is not only based on the limit established for river health but was expanded to include the feasibility of using the water for water intake, recreational activities, and sustaining fish population. The temporal health of Klang River was evaluated using the Risk Matrix Approach (RMA) based on the frequency of RQ > 1 and associated colour-coded hazard impacts. By using the developed RMA, the hazard level for each parameter at each location was assessed and individually mapped using Geographic Information System (GIS). The developed risk hazard mapping has high potential as one of the essential tools in making decisions for a cost-effective river restoration and rehabilitation.
    Matched MeSH terms: Drinking
  13. Wong YL
    JUMMEC, 2002;7:59-61.
    The majority of migrant workers studied in this survey were males Muslims from Bangladesh. The mean age was 30 and the majority were aged between 21-30 years. Although almost all of them had 7-13 years of schooling, the majority were working in the service industry. More than two thrids of the migrant workers were provided with various forms of housing by their employers. Majority of them stated that they had better amenities, such as piped drinking water and sanitary toilets, in Malaysia compared to those in their home countries. From their reports, it appears that the majority did not engage in risk behaviours such as, smoking, alcohol and drug abuse.
    Matched MeSH terms: Drinking
  14. Lina A, Shaharuddin M
    The purpose of this study was to determine aluminium (Al) concentrations in groundwater used for drinking and cooking and its related health risk among population of 28th Mile Orang Asli village in Jenderam Hilir, Selangor, Malaysia. A total of 100 respondents were recruited, comprising 51 (51.0 %) male and 49 (49.0 %) female residents. Inductively coupled plasma mass spectrometry (ICP-MS) was used to determine Al concentration, while the LAMOTTE TRACER ORP PockeTester was used to measure pH levels. Statistical Package for Social Science (SPSS) was used to analyze the data. Results showed that Al concentration ranged from 0.041 - 0.136 mg/L with a mean of 0.136 + SD 0.041 mg/L, hence the values obtained were below the standard value (0.2 mg/L). pH levels ranged from 3.82 to 5.84, with a mean of 4.163 + SD 0.411, which is acidic and below the range permitted by the health authorities. The acidic nature may have an impact on the Al concentration in the water. The Hazard Index (HI) was found to be less than 1, thus there was no health risk of Al exposure in drinking water for the respondents involved. The study area was considered safe from having health risk associated with Al exposure.
    Matched MeSH terms: Drinking Water
  15. Wong YL, Fauza AG
    JUMMEC, 1998;3:60-60.
    The majority of migrant workers studied in this pilot survey were male, from Bangladesh and Muslim. The mean age was 30 years and the majority were aged between 21-30 years. Although almost half of them had 7-13 years of schooling, or an equivalent to secondary education, the majority were work- ing in the Service industry, predominantly in cleaning services. It is noted that this enlployment trend varied from the national situation, whereby majority of legal migrant workers (Indonesian and Thai) are found in the agricultural sector. More than two thirds of the migrant workers were provided with various forms of housing by the employer. However, it is not known if such acconunodation was adequate or not, as there were no questions about housing structures aod extent of overcrowding. Majority of them stated that they had better amenities, such as piped drinking water and sanitaly toilets, here in Malaysia compared to those in their home countries. Yet, the real extent of better sani- tation is difficult to assess since verification of such amenities could not be done. From their self- reports, it appears that the majority did not engage in risk behaviours, such as smoking, alcohol and drug abuse. It is pertinent, however, to include other risk behaviours in the study, particularly the area of sexual behaviour. The pilot study yielded 28 female Indonesian migrant workers. More than two thirds of them were married. Although none of the married women reported that they were pregnant at the time of the survey, more than two thirds of then1 had betweenl-3 children in Malaysia. Since the age range of these children would be an important indicator of the need for preventive health care, it is proposed that age range of the accompanying children and their immunisation status be included in the questionnaire. Just below half of them were currently practising family planning, and more than two thirds were using modern methods, such as, pill, Norplant and IUD. It is recotnmended that in addition to pregnancy and family planning information, the study could also collect data on gynaeco- logical health and the health seeking behaviour for these problems.
    Matched MeSH terms: Drinking
  16. Koken M, Guclu B
    Malays Orthop J, 2019 Jul;13(2):11-14.
    PMID: 31467645 DOI: 10.5704/MOJ.1907.002
    Introduction: Symptomatic osteoarthritis is one of the most common indications for total knee arthroplasty (TKA) operations. Pain in every stage of the disease causes sleep disturbances in patients. The primary objective of this study was to evaluate the effect of TKA on the quality of sleep in patients with symptomatic osteoarthritis. Materials and Methods: This retrospective, descriptive study was performed on 80 patients diagnosed with symptomatic osteoarthritis who underwent TKA. The patients responded to the Pittsburgh Sleep Quality Index (PSQI), which is widely used to evaluate sleep quality. Additionally, the effects of demographic and clinical variables such as age, gender, body mass index, smoking and alcohol consumption were also evaluated before and after surgery. Results: There was no correlation between demographic variables and PSQI scores pre- and postoperatively. There was a decrease in sleep quality on the sixth postoperative week compared to the preoperative period however this difference was not statistically significant. On the other hand, there was a statistically significant difference between preoperative and postoperative sixth month PSQI scores. Mean values of overall sleep quality and daily function were significantly higher in the postoperative sixth compared to the preoperative period (p<0.001) Conclusion: Treatment of symptomatic OA with TKA will improve sleep quality in the long term.
    Study site: Hospital, Turkey
    Matched MeSH terms: Alcohol Drinking
  17. Arokiasamy JT
    JUMMEC, 1996;1:33-36.
    A group of 265 urban private sector workers in Kuala Lumpur and adjacent Petaling Jaya responded to a self-administered questionnaires. Their knowledge of cardio-pulmonary resuscitation, risk factors for and preventive measures against cardiovascular diasease a n d w h e n these should be started are relatively weak, though knowledge on symptoms of heart a attack are satisfactory. Relatively more males than females are current smokers and consumers of alcohol. Males tended to start smoking and drinking in their teen years while females tended to do so later in their non-teen years.
    Matched MeSH terms: Drinking
  18. Manaharan T, Chakravarthi S, Radhakrishnan AK, Palanisamy UD
    Toxicol Rep, 2014;1:718-725.
    PMID: 28962285 DOI: 10.1016/j.toxrep.2014.09.006
    In this study, the acute and subchronic toxicity effect of the Syzygium aqueum leaf extract (SA) was evaluated. For the acute toxicity study, a single dose of 2000 mg/kg of the SA was given by oral-gavage to male Sprague-Dawley (SD) rats. The rats were observed for mortality and toxicity signs for 14 days. In the subchronic toxicity study the SA was administered orally at doses of 50, 100, and 200 mg/kg per day for 28 days to male SD rats. The animals were sacrificed at the end of the experiment. The parameters measured including food and water intake, body weight, absolute and relative organ weight, blood biochemical tests and histopathology observation. In both the acute and subchronic toxicity studies, SA did not show any visible signs of toxicity. There were also no significant differences between the control and SA treated rats in terms of their food and water intake, body weight, absolute and relative organ weight, biochemical parameters or gross and microscopic appearance of the organs. There were no acute or subchronic toxicity observed and our results indicate that this extract could be devoid of any toxic risk. This is the first in vivo study reported the safety and toxicity of SA.
    Matched MeSH terms: Drinking
  19. Ramesh M, Narasimhan M, Krishnan R, Aruna RM, Kuruvilla S
    J Oral Maxillofac Pathol, 2017 Sep-Dec;21(3):345-350.
    PMID: 29391706 DOI: 10.4103/jomfp.JOMFP_247_16
    Background: Fluoride is needed for the normal development of bone and teeth; in high levels, it affects developing teeth and bone. Dental fluorosis (DF) is caused by ingestion of excess fluoride mainly through drinking water.

    Aim: The present study aims to observe and understand the histological changes of fluorosed teeth under light microscope (LM).

    Materials and Methods: Teeth which were indicated for extractions for orthodontic or periodontal problems were selected. Thirty extracted teeth were selected with varying degrees of DF based on modified Dean's fluorosis index. Ground sections of these teeth were prepared and the sections were studied under binocular LM. Photomicrographs were taken under high power objective using 15 megapixels Nikon camera.

    Results and Conclusion: Qualitative histologic changes in different grades of fluorosed teeth were evaluated in enamel, dentin, cementum and between their junctions. Fluoride interacts with enamel in both mineral phases and organic macromolecules by strong ionic and hydrogen bonds resulting in incomplete crystal growth at prism peripheries. This presents as hypomineralization of enamel and dentin, increased interglobular dentin, increased secondary curvatures and changes in cementum such as diffuse cementodentinal junction and increased thickness of Tomes' granular layer. Changes in the structure of the teeth with Dean's index below 2 and teeth with Dean's index of 2 and above were compared using Chi-square test. P value was found to be highly significant being 0.00047. Many of the features of dental fluorosis seen in the present study under light microscope are comparable to those results studied under specialized microscopes.
    Matched MeSH terms: Drinking Water
  20. Salihu SO, Bakar NKA
    Talanta, 2018 May 01;181:401-409.
    PMID: 29426532 DOI: 10.1016/j.talanta.2018.01.041
    In this study, a simple sample preparation method was developed for the determination of tri-and hexavalent chromium in water samples. It utilizes a pre-heated customized glass tube (CGT), to supply the heat energy required for the reaction of Cr(III) with ammonium pyrrolidinedithiocarbamate (APDC). The products of the Cr complexes, tris(1-pyrrolidinecarbodithioato)chromium(III) and bis(1-pyrrolidinecarbodithioato)[1-pyrrolidinecarbodithio(thioperoxoato)]chromium(III) were chromatographed with Shimadzu LC-20AT and Zobax Eclipse C18 (150mm × 4.6mm, 5µm) column using ACN: Water, (7:3, v/v) as the mobile phase. The concentration of Cr(III) ranged from 0.06mgL-1to 0.09mgL-1and that of Cr(VI) was between 0.02mgL-1to 0.04mgL-1in the samples. Percentage recoveries from spiked real samples were between 87% (tap water) to 110% (wastewater) for Cr(III) and 92% (pond water) to 117% (tap water) for Cr(VI). The limits of detection (LODs) were 0.0029mgL-1and 0.0014mg/L-1for Cr(III) Cr(VI) respectively. While the limits of quantitation (LOQs), were 0.0098mgL-1and 0.0047mgL-1for Cr(III) and Cr(VI) respectively. Method precision (RSD (%)) was 3.3% and 3.5% for Cr(III) and Cr(VI) respectively. The developed method was applied for the speciation analysis of chromium in drinking water, tap water, wastewater, river water, and pond water samples. Our findings proved the method is simple and inexpensive. The method was validated by the analysis of a certified reference material (CRM) SLRS-4. The percentage recovery and RSD(%) from the spiked CRM were 91% and 115% and 0.32% and 1.4% for Cr(III) and Cr(VI) respectively.
    Matched MeSH terms: Drinking Water
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