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Vanadia as an electron-hole recombination inhibitor on fibrous silica-titania for selective hole oxidation of ciprofloxacin and Congo red photodegradation

Hassan NS, Jalil AA, Fei ICM, Razak MTA, Khusnun NF, Bahari MB, et al.

Chemosphere, 2023 Oct;338:139502.
PMID: 37453521 DOI: 10.1016/j.chemosphere.2023.139502

Vanadia (V2O5)-incorporated fibrous silica-titania (V/FST) catalysts, which were successfully synthesized using a hydrothermal method followed by the impregnation of V2O5. The catalysts were then characterized using numerous techniques, including X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption analyses, ultraviolet-visible diffuse reflectance spectroscopy, Fourier-transform infrared, X-ray photoelectron spectroscopy, and photoluminescence (PL) analyses. The study found that varying the amount of V2O5 (1-10 wt%) had a significant impact on the physicochemical properties of the FST, which in turn improved the photodegradation efficiency of two organic compounds, ciprofloxacin (CIP) and congo red (CR). 5V/FST demonstrated the best performance in degrading 10 mg L-1 of CIP (83%) and CR (100%) at pH 3 using 0.375 g L-1 catalyst under visible light irradiation within 180 min. The highest photoactivity of 5V/FST is mainly due to higher crystallinity and the highest number of V2O5-FST interactions. Furthermore, as demonstrated by PL analysis, the 5V/FST catalyst has the most significant impact on interfacial charge transfer and reduces electron-hole recombination. The photodegradation of both contaminants follows the Langmuir-Hinshelwood pseudo-first-order model, according to the kinetic study. The scavenger investigation demonstrated that hydroxyl radicals and holes dominated species in the system, indicating that the catalyst effectively generated reactive species for pollutant degradation. A possible mechanism was also identified for FST and 5V/FST. Interestingly, V2O5 acts as an electron-hole recombination inhibitor on FST for selective hole oxidation of ciprofloxacin and congo red photodegradation. Finally, the degradation efficiency of the catalyst remained relatively stable even after five cyclic experiments, indicating its potential for long-term use in environmental remediation.
Fulltext The Economic Impact Of Hypertension In Health Care System Of Pakistan

Iqbal MS, Iqbal MW, Bahari MB, Iqbal MZ

Value Health, 2014 Nov;17(7):A485.
PMID: 27201430 DOI: 10.1016/j.jval.2014.08.1415
Synthesis and catalytic properties of calcium oxide obtained from organic ash over a titanium nanocatalyst for biodiesel production from dairy scum

Nabgan W, Nabgan B, Ikram M, Jadhav AH, Ali MW, Ul-Hamid A, et al.

Chemosphere, 2022 Mar;290:133296.
PMID: 34914962 DOI: 10.1016/j.chemosphere.2021.133296

The fatty acid methyl ester (FAME) production from dairy effluent scum as a sustainable energy source using CaO obtained from organic ash over titanium dioxide nanoparticles (TNPs) as the transesterification nano-catalyst has been studied. The physical and chemical properties of the synthesized catalysts were characterized, and the effect of different experimental factors on the biodiesel yield was studied. It was revealed that the CaO-TiO2 nano-catalyst displayed bifunctional properties, has both basic and acid phases, and leads to various effects on the catalyst activity in the transesterification process. These bifunctional properties are critical for achieving simultaneous transesterification of dairy scum oil feedstock. According to the reaction results, the catalyst without and with a low ratio of TNPs showed a low catalytic activity. In contrast, the 3Ca-3Ti nano-catalyst had the highest catalytic activity and a strong potential for reusability, producing a maximum biodiesel yield of 97.2% for a 3 wt% catalyst, 1:20 oil to methanol molar ratio for the dairy scum, and a reaction temperature of 70 °C for a period of 120 min under a 300 kPa pressure. The physical properties of the produced biodiesel are within the EN14214 standards.
Fulltext Selected pharmacokinetic issues of the use of antiepileptic drugs and parenteral nutrition in critically ill patients

Salih MR, Bahari MB, Abd AY

Nutr J, 2010 Dec 31;9:71.
PMID: 21194458 DOI: 10.1186/1475-2891-9-71

OBJECTIVES: To conduct a systematic review for the evidence supporting or disproving the reality of parenteral nutrition- antiepileptic drugs interaction, especially with respect to the plasma protein-binding of the drug.
METHODS: The articles related to the topic were identified through Medline and PubMed search (1968-Feburary 2010) for English language on the interaction between parenteral nutrition and antiepileptic drugs; the search terms used were anti-epileptic drugs, parenteral nutrition, and/or interaction, and/or in vitro. The search looked for prospective randomized and nonrandomized controlled studies; prospective nonrandomized uncontrolled studies; retrospective studies; case reports; and in vitro studies. Full text of the articles were then traced from the Universiti Sains Malaysia (USM) library subscribed databases, including Wiley-Blackwell Library, Cochrane Library, EBSCOHost, OVID, ScienceDirect, SAGE Premier, Scopus, SpringerLINK, and Wiley InterScience. The articles from journals not listed by USM library were traced through inter library loan.
RESULTS: There were interactions between parenteral nutrition and drugs, including antiepileptics. Several guidelines were designed for the management of illnesses such as traumatic brain injuries or cancer patients, involving the use of parenteral nutrition and antiepileptics. Moreover, many studies demonstrated the in vitro and in vivo parenteral nutrition -drugs interactions, especially with antiepileptics.
CONCLUSIONS: There was no evidence supporting the existence of parenteral nutrition-antiepileptic drugs interaction. The issue has not been studied in formal researches, but several case reports and anecdotes demonstrate this drug-nutrition interaction. However, alteration in the drug-free fraction result from parenteral nutrition-drug (i.e. antiepileptics) interactions may necessitate scrupulous reassessment of drug dosages in patients receiving these therapies. This reassessment may be particularly imperative in certain clinical situations characterized by hypoalbuminemia (e.g., burn patients).
Fulltext Profitable Fischer Tropsch realization via CO2-CH4 reforming; an overview of nickel-promoter-support interactions

Alhassan M, Jalil AA, Bahari MB, Owgi AHK, Nabgan W, Hassan NS, et al.

RSC Adv, 2023 Jan 06;13(3):1711-1726.
PMID: 36712622 DOI: 10.1039/d2ra06773k

Environmental pollution, climate change, and fossil fuel extinction have aroused serious global interest in the search for alternative energy sources. The dry reforming of methane (DRM) could be a good technique to harness syngas, a starting material for the FT energy process from greenhouse gases. Noble metal DRM catalysts are effective for the syngas generation but costly. Therefore, they inevitably, must be replaced by their Ni-based contemporaries for economic reasons. However, coking remains a strong challenge that impedes the industrialization of the FT process. This article explains the secondary reactions that lead to the production of detrimental graphitic coke deposition on the surface of active nickel catalyst. The influence of nickel particle size, impact of extra surface oxygen species, interaction of Ni catalysts with metal oxide supports/promoters, and larger fraction of exposed nickel active sites were addressed in this review. Size of active metal determines the conversion, surface area, metal dispersion, surface reactions, interior diffusion effects, activity, and yield. The influence of oxygen vacancy and coke deposition on highly reported metal oxide supports/promoters (Al2O3, MgO and La2O3) was postulated after studying CIFs (crystallographic information files) obtained from the Crystallography open database (COD) on VESTA software. Thus, overcoming excessive coking by La2O3 promotion is strongly advised in light of the orientation of the crystal lattice characteristics and the metal-support interaction can be used to enhance activity and stability in hydrogen reforming systems.
Practices associated with serum antiepileptic drug level monitoring at a pediatric neurology clinic: a Malaysian experience

Salih MR, Bahari MB, Hassali MA, Shafie AA, Al-Lela OQ, Abd AY, et al.

J Pharm Pract, 2013 Jun;26(3):192-7.
PMID: 22797836 DOI: 10.1177/0897190012451926

OBJECTIVES: To assess the practices associated with the application of therapeutic drug monitoring (TDM) for antiepileptic drugs (AEDs) in the management of children with structural-metabolic epilepsy.
METHODS: It was a retrospective chart review and included children aged ≥2 years old with structural-metabolic epilepsy, treated with AEDs, and received TDM. The data were extracted from the medical records.
RESULTS: Thirty-two patients were identified with 50 TDM assays. In two thirds of the assays, "check level" and "recheck level" were the reasons behind the requesting of serum level monitoring of AEDs. Knowledge of serum AED levels led to alterations in the management in 60% of the assays. Thirty-two (76%) pediatrician's actions were consistent with the recommendation of TDM pharmacist. Forty-nine (98%) levels were appropriately indicated. In relation to the appropriateness of sampling time, 9 (18%) levels were not assessed due to missing data. Twenty-seven (54%) levels were appropriately sampled.
CONCLUSIONS: More studies should be designed to improve the component of the current TDM request form, especially in the reason section. By the same token, the number of pointless assays and the costs to the health care system can be reduced both by enhancing and improving the educational standards of the requesting neurologists.
KEYWORDS: Malaysia; epilepsy; neurology; pediatrics; therapeutic drug monitoring
Study site: Paediatric Neurology Clinic, Hospital Pulau Pinang, Malaysia
Potential drug-herb interaction with antiplatelet/anticoagulant drugs

Saw JT, Bahari MB, Ang HH, Lim YH

Complement Ther Clin Pract, 2006 Nov;12(4):236-41.
PMID: 17030294

This is a cross-sectional survey evaluating the use of herbal medicines in medical wards patients that may interfere with the effect of antiplatelet or anticoagulant therapy. Among the 250 patients participated, 42.4% (n=106) were taking herbs with 76 patients (71.7%) using herbs for the past 12 months. Overall, almost 31% (n=23, N=76) of patients were taking one or more of the specified herbal medicines [ginseng (Panax ginseng), garlic (Allium sativum), ginkgo (Gingko biloba) thought to interact with antiplatelet or anticoagulant therapy. The study showed that 21% (n=16, N=76) of patients co-ingested specified herbs with antiplatelet or anticoagulant therapy, of which half of them were at risk of potential drug-herb interactions. A large proportion of respondents involved in potential drug-herb interaction were elderly people (62.5%, n=5). However, more than 90% of herbal users did not disclose the use of herbal medicine to their health professionals. It is thus prudent for all care givers to be aware of the possibility of drug-herb interaction and inquire about herbal use from patients.
Fulltext Phyto-Mediated Photo Catalysed Green Synthesis of Silver Nanoparticles Using Durio Zibethinus Seed Extract: Antimicrobial and Cytotoxic Activity and Photocatalytic Applications

Sumitha S, Vasanthi S, Shalini S, Chinni SV, Gopinath SCB, Anbu P, et al.

Molecules, 2018 Dec 13;23(12).
PMID: 30551671 DOI: 10.3390/molecules23123311

In the present study, we have developed a green approach for the synthesis of silver nanoparticles (DSAgNPs) using aqueous extract of Durio zibethinus seed and determined its antibacterial, photocatalytic and cytotoxic effects. Surface plasmon resonance confirmed the formation of DSAgNPs with a maximum absorbance (λmax) of 420 nm. SEM and TEM images revealed DSAgNPs were spherical and rod shaped, with a size range of 20 nm and 75 nm. The zeta potential was found to be -15.41 mV. XRD and EDX analyses confirmed the nature and presence of Ag and AgCl. DSAgNPs showed considerable antibacterial activity, exhibited better cytotoxicity against brine shrimp, and shown better photocatalytic activity against methylene blue. Based on the present research work, it can be concluded that DSAgNPs could be used in the field of water treatment, pharmaceuticals, biomedicine, biosensor and nanotechnology in near future.
Physicians' Prescribing Pattern For Tuberculosis: Evidences From Community Pharmacies In Punjab, Pakistan

Iqbal MS, Iqbal MZ, Iqbal MW, Bahari MB

Value Health, 2015 Nov;18(7):A507-8.
PMID: 26532843 DOI: 10.1016/j.jval.2015.09.1455
Fulltext Medical care costs of newly diagnosed children with structural-metabolic epilepsy: a one year prevalence-based approached

Salih MR, Bahari MB, Shafie AA, Hassali MA, Al-lela OQ, Abd AY, et al.

Seizure, 2012 Dec;21(10):764-9.
PMID: 22939458 DOI: 10.1016/j.seizure.2012.08.005

Aims of this study were to estimate the first-year medical care costs of newly diagnosed children with structural-metabolic epilepsy and to determine the cost-driving factors in the selected population.
Master's program in clinical pharmacy at a Malaysian pharmacy school

Ab Rahman AF, Bahari MB

Am J Health Syst Pharm, 2004 Dec 15;61(24):2687-9.
PMID: 15646704
Fulltext Knowledge, Attitude, and Practice of Oral Hygiene Among Students of a Private University

Iqbal MZ, Rathi R, Prajapati SK, Omar K, Bahari MB, Rajan S, et al.

J Pharm Bioallied Sci, 2021;13(1):123-128.
PMID: 34084058 DOI: 10.4103/jpbs.JPBS_298_20

OBJECTIVE: The objective of the study was to evaluate the knowledge, attitude, and practice among pre-final and final year students of pharmacy, medicine, biotechnology, and business faculties about oral hygiene.
MATERIALS AND METHODS: A cross-sectional observational study was conducted to evaluate the knowledge, attitude, and practice of students towards oral hygiene at a private university in Malaysia. Validated questionnaires were distributed to a convenient stratified sample of 324 students studying in the different selected faculties, namely pharmacy, medicine, biotechnology, and business, respectively. The Statistical Package for Social Science (SPSS) Version 24.0 was used to analyze the data.
RESULTS: With regard to knowledge, upon evaluation, it was seen that the students of the Faculty of Pharmacy had the highest percentage of adequate knowledge, which was statistically significant with a P-value of 0.001 and the effect size of 0.246. On the evaluation of attitudes, it was seen that the Faculty of Biotechnology had the highest positive attitudes. According to race, Malay students had the highest positive attitude among all the races that participated in the study, which showed a P-value of 0.037 with the effect size of 0.034. Regarding practice, the Faculty of Pharmacy had the lowest practice compared with the other faculties. This variable had a P-value of 0.001 and showed to have significance against the practice with an effect size of 0.193.
CONCLUSION: Overall, a good attitude was seen amongst the students on their oral hygiene. It was also observed that the attitude, knowledge, and practice of the students in a private university increased with an increasing level of education.
Fulltext Knowledge, Attitude, and Practice about Mental Health Challenges among Healthcare Students of a Private University

Zahid Iqbal M, Rathi R, Prajapati SK, Zi Qing MS, Pheng TS, Wei Kee H, et al.

J Pharm Bioallied Sci, 2021;13(1):136-142.
PMID: 34084060 DOI: 10.4103/jpbs.JPBS_297_20

OBJECTIVE: The objective of this study was to evaluate the knowledge, attitude, and practice of healthcare students (Medicine, Pharmacy, and Dentistry) in a private university about mental health challenges (MHC).
MATERIALS AND METHODS: A research cross-sectional observational was conducted to evaluate the knowledge, attitude, and practice of students towards MHC at a private university in Malaysia. A validated questionnaire was distributed to 284 students studying in three different selected faculties, namely the Faculty of Medicine, Pharmacy, and Dentistry. The Statistical Package for Social Science (SPSS) Version 24.0 was used to analyze the data.
RESULTS: Upon evaluation of knowledge, male students were having less-adequate knowledge than females (P = 0.006). Malay students were having adequate knowledge than other races about MHC. Faculty of Medicine was having adequate knowledge than other faculties (P ≤ 0.001). Regarding attitude, the Faculty of Pharmacy students had the highest positive attitudes (P = 0.001). Final year students were having a more positive attitude than pre-final year students. For the evaluation of practice, the Faculty of Dentistry students had the lowest practice compared with other faculties.
CONCLUSION: In conclusion, overall, good knowledge was seen among the students of the private medical university about MHC. The medical students had adequate knowledge when compared with other faculties in the university.
Knowledge, Attitude and Perception of Polio (Poliomyelitis) among General Public in Pakistan

Iqbal MS, Iqbal MW, Iqbal MZ, Bahari MB

Value Health, 2015 Nov;18(7):A591.
PMID: 26533322 DOI: 10.1016/j.jval.2015.09.1519
Fulltext Iraqi parents' views of barriers to childhood immunization

Al-Lela OQ, Bahari MB, Al-Abbassi MG, Salih MR, Basher AY

East Mediterr Health J, 2013 Mar;19(3):295-7.
PMID: 23879083

Deficiencies in knowledge about immunization among parents often leads to poor utake or errors in immunization dosage and timing. The aims of this study were to determine Iraqi parents' views of barriers to immunization and beliefs about ways to promote immunization. A questionnaire survey was carried out among 528 Iraqi parents with children who had incomplete immunization status. The main barriers to immunization agreed by the parents were lack of vaccine availability (51.5% of parents) and parents' lack of education (42.4%), while 88.4% of parents thought that lack of funding was not an important barrier. More than 60% of the parents suggested promoting childhood immunization via the media, and 77.5% thought that an increase in funding would not remove barriers to childhood immunization. Better vaccine availability in public health clinics and improving parents' literacy might enhance immunization uptake in Iraq.
Fulltext Incorporating an immunization course in the pharmacy curriculum: Malaysian experience

Al-lela OQ, Bahari MB, Elkalmi RM, Jawad Awadh AI

Am J Pharm Educ, 2012 Dec 12;76(10):206.
PMID: 23275671 DOI: 10.5688/ajpe7610206
Fulltext Immunogenicity and protective efficacy of a live, oral cholera vaccine formulation stored outside-the-cold-chain for 140 days

Xian TH, Sinniah K, Yean CY, Krishnamoorthy V, Bahari MB, Ravichandran M, et al.

BMC Immunol, 2020 05 25;21(1):29.
PMID: 32450807 DOI: 10.1186/s12865-020-00360-1

BACKGROUND: Cholera, an acute watery diarrhoeal disease caused by Vibrio cholerae serogroup O1 and O139 across the continents. Replacing the existing WHO licensed killed multiple-dose oral cholera vaccines that demand 'cold chain supply' at 2-8 °C with a live, single-dose and cold chain-free vaccine would relieve the significant bottlenecks and cost determinants in cholera vaccination campaigns. In this direction, a prototype cold chain-free live attenuated cholera vaccine formulation (LACV) was developed against the toxigenic wild-type (WT) V. cholerae O139 serogroup. LACV was found stable and retained its viability (5 × 106 CFU/mL), purity and potency at room temperature (25 °C ± 2 °C, and 60% ± 5% relative humidity) for 140 days in contrast to all the existing WHO licensed cold-chain supply (2-8 °C) dependent killed oral cholera vaccines.
RESULTS: The LACV was evaluated for its colonization potential, reactogenicity, immunogenicity and protective efficacy in animal models after its storage at room temperature for 140 days. In suckling mice colonization assay, the LACV recorded the highest recovery of (7.2 × 107 CFU/mL) compared to those of unformulated VCUSM14P (5.6 × 107 CFU/mL) and the WT O139 strain (3.5 × 107 CFU/mL). The LACV showed no reactogenicity even at an inoculation dose of 104-106 CFU/mL in a rabbit ileal loop model. The rabbits vaccinated with the LACV or unformulated VCUSM14P survived a challenge with WT O139 and showed no signs of diarrhoea or death in the reversible intestinal tie adult rabbit diarrhoea (RITARD) model. Vaccinated rabbits recorded a 275-fold increase in anti-CT IgG and a 15-fold increase in anti-CT IgA antibodies compared to those of rabbits vaccinated with unformulated VCUSM14P. Vibriocidal antibodies were increased by 31-fold with the LACV and 14-fold with unformulated VCUSM14P.
CONCLUSION: The vaccine formulation mimics a natural infection, is non-reactogenic and highly immunogenic in vivo and protects animals from lethal wild-type V. cholerae O139 challenge. The single dose LACV formulation was found to be stable at room temperature (25 ± 2 °C) for 140 days and it would result in significant cost savings during mass cholera vaccination campaigns.
Fulltext Herbal use amongst multiethnic medical patients in Penang Hospital: pattern and perceptions

Saw JT, Bahari MB, Ang HH, Lim YH

Med J Malaysia, 2006 Oct;61(4):422-32.
PMID: 17243519

A cross sectional survey on pattern and perception of herbal use among medical patients in Penang Hospital was conducted. Among 250 patients surveyed, 67.9% were using herbal medicine and conventional medicine concomitantly. A majority of the patients used herbs for health maintenance (51.3%) purpose. More than 90% of herbal users did not disclose herbal use to their physician and "Doctor never asked" was the major reason given (54.2%). The Chinese reported the highest rate of herbal use but was least likely to disclose. These findings are important for health professionals to ensure medication safety and recognise potential drug herb interaction.
Fulltext Health-Related Quality of Life Among Tuberculosis Patients in Pakistan: A Cross Sectional Study Using WHOQOL-BREF

Iqbal MS, Iqbal MW, Bahari MB, Iqbal MZ

Value Health, 2014 Nov;17(7):A601-2.
PMID: 27202073 DOI: 10.1016/j.jval.2014.08.2086
Extra-modification of zirconium dioxide for potential photocatalytic applications towards environmental remediation: A critical review

Hassan NS, Jalil AA, Khusnun NF, Bahari MB, Hussain I, Firmansyah ML, et al.

J Environ Manage, 2023 Feb 01;327:116869.
PMID: 36455446 DOI: 10.1016/j.jenvman.2022.116869

Photocatalytic degradation is a valuable direction for eliminating organic pollutants in the environment because of its exceptional catalytic activity and low energy requirements. As one of the prospective photocatalysts, zirconium dioxide (ZrO2) is a promising candidate for photoactivity due to its favorable redox potential and higher chemical stability. ZrO2 has a high rate of electron-hole recombination and poor light-harvesting capabilities. Still, modification has demonstrated enhancements, especially extra-modification, and is therefore worthy of investigation. This present review provides a comprehensive overview of the extra-modifications of ZrO2 for enhanced photocatalytic performance, including coupling with other semiconductors, doping with metal, non-metal, and co-doping with metal and non-metal. The extra-modified ZrO2 showed superior performance in degrading the organic pollutant, particularly dyes and phenolic compounds. Interestingly, this review also briefly highlighted the probable mechanisms of the extra-modification of ZrO2 such as p-n heterojunction, type II heterojunction, and Z-scheme heterojunction. The latter heterojunction with excellent electron-hole space separation improved the photoactivity. Extensive research on ZrO2's photocatalytic potential is presented, including the removal of heavy metals, the redox of heavy metals and organic pollutants, and the evolution of hydrogen. Modified ZrO2's photocatalytic effectiveness depends on its band position, oxygen vacancy concentration, and metal defect sites. The opportunities and future problems of the extra-modified ZrO2 photocatalyst are also discussed. This review aims to share knowledge regarding extra-modified ZrO2 photocatalysts and inspire new environmental remediation applications.

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