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  1. Mustafa ZU, Iqbal S, Asif HR, Salman M, Jabbar S, Mallhi TH, et al.
    Antibiotics (Basel), 2023 Feb 28;12(3).
    PMID: 36978348 DOI: 10.3390/antibiotics12030481
    Since the emergence of COVID-19, several different medicines including antimicrobials have been administered to patients to treat COVID-19. This is despite limited evidence of the effectiveness of many of these, fueled by misinformation. These utilization patterns have resulted in concerns for patients' safety and a rise in antimicrobial resistance (AMR). Healthcare workers (HCWs) were required to serve in high-risk areas throughout the pandemic. Consequently, they may be inclined towards self-medication. However, they have a responsibility to ensure any medicines recommended or prescribed for the management of patients with COVID-19 are evidence-based. However, this is not always the case. A descriptive cross-sectional study was conducted among HCWs in six districts of the Punjab to assess their knowledge, attitude and practices of self-medication during the ongoing pandemic. This included HCWs working a range of public sector hospitals in the Punjab Province. A total of 1173 HCWs were included in the final analysis. The majority of HCWs possessed good knowledge regarding self-medication and good attitudes. However, 60% were practicing self-medication amid the COVID-19 pandemic. The most frequent medicines consumed by the HCWs under self-medication were antipyretics (100%), antibiotics (80.4%) and vitamins (59.9%). Azithromycin was the most commonly purchase antibiotic (35.1%). In conclusion, HCWs possess good knowledge of, and attitude regarding, medicines they purchased. However, there are concerns that high rates of purchasing antibiotics, especially "Watch" antibiotics, for self-medication may enhance AMR. This needs addressing.
  2. Ali F, Khan KM, Salar U, Iqbal S, Taha M, Ismail NH, et al.
    Bioorg Med Chem, 2016 08 15;24(16):3624-35.
    PMID: 27325448 DOI: 10.1016/j.bmc.2016.06.002
    Dihydropyrimidones 1-37 were synthesized via a 'one-pot' three component reaction according to well-known Biginelli reaction by utilizing Cu(NO3)2·3H2O as catalyst, and screened for their in vitro β-glucuronidase inhibitory activity. It is worth mentioning that amongst the active molecules, compounds 8 (IC50=28.16±.056μM), 9 (IC50=18.16±0.41μM), 10 (IC50=22.14±0.43μM), 13 (IC50=34.16±0.65μM), 14 (IC50=17.60±0.35μM), 15 (IC50=15.19±0.30μM), 16 (IC50=27.16±0.48μM), 17 (IC50=48.16±1.06μM), 22 (IC50=40.16±0.85μM), 23 (IC50=44.16±0.86μM), 24 (IC50=47.16±0.92μM), 25 (IC50=18.19±0.34μM), 26 (IC50=33.14±0.68μM), 27 (IC50=44.16±0.94μM), 28 (IC50=24.16±0.50μM), 29 (IC50=34.24±0.47μM), 31 (IC50=14.11±0.21μM) and 32 (IC50=9.38±0.15μM) found to be more potent than the standard d-saccharic acid 1,4-lactone (IC50=48.4±1.25μM). Molecular docking study was conducted to establish the structure-activity relationship (SAR) which demonstrated that a number of structural features of dihydropyrimidone derivatives were involved to exhibit the inhibitory potential. All compounds were characterized by spectroscopic techniques such as (1)H, (13)C NMR, EIMS and HREI-MS.
  3. Iqbal S, Saleem M, Azim MK, Taha M, Salar U, Khan KM, et al.
    Bioorg Chem, 2017 06;72:89-101.
    PMID: 28390994 DOI: 10.1016/j.bioorg.2017.03.014
    Discovery and development of carbonic anhydrase inhibitors is crucial for their clinical use as antiepileptic, diurectic and antiglaucoma agents. Keeping this in mind, we have synthesized carbohydrazones 1-27 and evaluated them for their in vitro carbonic anhydrase inhibitory potential. Out of twenty-seven compounds, compounds 1 (IC50=1.33±0.01µM), 2 (IC50=1.85±0.24µM), 3 (IC50=1.37±0.06µM), and 9 (IC50=1.46±0.12µM) have showed carbonic anhydrase inhibition better than the standard drug zonisamide (IC50=1.86±0.03µM). Moreover, compounds 4 (IC50=2.32±0.04µM), 5 (IC50=3.96±0.35µM), 7 (IC50=2.33±0.02µM), and 8 (IC50=2.67±0.01µM) showed good inhibitory activity. Cheminformatic analysis has shown that compounds 1 and 2 possess lead-like properties. In addition, kinetic and molecular docking studies were also performed to investigate the binding interaction between carbohydrazones and carbonic anhydrase enzyme. This study has identified a novel and potent class of carbonic anhydrase inhibitors with the potential to be investigated further.
  4. Ismail N, Ismail M, Mazlan M, Latiff LA, Imam MU, Iqbal S, et al.
    Cell Mol Neurobiol, 2013 Nov;33(8):1159-69.
    PMID: 24101432 DOI: 10.1007/s10571-013-9982-z
    Thymoquinone (TQ), a bioactive constituent of Nigella sativa Linn (N. sativa) has demonstrated several neuropharmacological attributes. In the present study, the neuroprotective properties of TQ were investigated by studying its anti-apoptotic potential to diminish β-amyloid peptide 1-40 sequence (Aβ1-40)-induced neuronal cell death in primary cultured cerebellar granule neurons (CGNs). The effects of TQ against Aβ1-40-induced neurotoxicity, morphological damages, DNA condensation, the generation of reactive oxygen species, and caspase-3, -8, and -9 activation were investigated. Pretreatment of CGNs with TQ (0.1 and 1 μM) and subsequent exposure to 10 μM Aβ1-40 protected the CGNs against the neurotoxic effects of the latter. In addition, the CGNs were better preserved with intact cell bodies, extensive neurite networks, a loss of condensed chromatin and less free radical generation than those exposed to Aβ1-40 alone. TQ pretreatment inhibited Aβ1-40-induced apoptosis of CGNs via both extrinsic and intrinsic caspase pathways. Thus, the findings of this study suggest that TQ may prevent neurotoxicity and Aβ1-40-induced apoptosis. TQ is, therefore, worth studying further for its potential to reduce the risks of developing Alzheimer's disease.
  5. Hashim H, Iqbal S
    Dent Traumatol, 2011 Feb;27(1):19-22.
    PMID: 21244625 DOI: 10.1111/j.1600-9657.2010.00958.x
    Maxillofacial injuries are among the commonest forms of body injuries. There are three divisions, namely, facial bone fractures, soft tissue injuries, and dentoalveolar injuries. Etiologies include motor vehicle accidents, assaults, falls, and sporting injuries. The aim of this study was to determine the profiles including the causes of maxillofacial injuries seen in an urban government hospital in the mainland of Penang State, Malaysia.
  6. Iqbal S, Hamid ALA, Purmal K
    Dent Traumatol, 2009 Dec;25(6):626-630.
    PMID: 19843134 DOI: 10.1111/j.1600-9657.2009.00830.x
    This case describes surgical correction of unilateral coronoid hyperplasia in a 13-year-old boy due to trauma. Treatment included coronoidectomy by intraoral approach after the diagnosis was confirmed. Computed tomography scan and occipitomental view radiograph were utilized for investigation. The resected coronoid process was sent for histopathological study. The histopathological examination revealed decalcified sections showing osteochondroid hyperplasia at the expanded end. On clinical and radiographic review at 2 years postoperation, the patient was well, completely symptom free and had improved mouth opening. This case report demonstrates the management of sports injury related unilateral coronoid hyperplasia. Emphasis was also placed on postoperational rehabilitation to prevent any relapse.
  7. Haque MA, Jewel MAS, Akhi MM, Atique U, Paul AK, Iqbal S, et al.
    Environ Monit Assess, 2021 Oct 08;193(11):704.
    PMID: 34623504 DOI: 10.1007/s10661-021-09500-5
    Functional classification of phytoplankton could be a valuable tool in water quality monitoring in the eutrophic riverine ecosystems. This study is novel from the Bangladeshi perspective. In this study, phytoplankton cell density and diversity were studied with particular reference to the functional groups (FGs) approach during pre-monsoon, monsoon, and post-monsoon at four sampling stations in Karatoya River, Bangladesh. A total of 54 phytoplankton species were recorded under four classes, viz. Chlorophyceae (21 species) Cyanophyceae (16 species), Bacillariophyceae (15 species), and Euglenophyceae (2 species). A significantly higher total cell density of phytoplankton was detected during the pre-monsoon season (24.20 × 103 cells/l), while the lowest in monsoon (9.43 × 103 cells/l). The Shannon-Wiener diversity index varied significantly (F = 16.109, P = 000), with the highest value recorded during the post-monsoon season. Analysis of similarity (ANOSIM) identified significant variations among the three seasons (P 
  8. Hashemi F, Hoepner L, Hamidinejad FS, Haluza D, Afrashteh S, Abbasi A, et al.
    Environ Sci Pollut Res Int, 2023 Jun;30(28):72368-72388.
    PMID: 37166731 DOI: 10.1007/s11356-023-27197-6
    COVID-19 has affected all aspects of human life so far. From the outset of the pandemic, preventing the spread of COVID-19 through the observance of health protocols, especially the use of sanitizers and disinfectants was given more attention. Despite the effectiveness of disinfection chemicals in controlling and preventing COVID-19, there are critical concerns about their adverse effects on human health. This study aims to assess the health effects of sanitizers and disinfectants on a global scale. A total of 91,056 participants from 154 countries participated in this cross-sectional study. Information on the use of sanitizers and disinfectants and health was collected using an electronic questionnaire, which was translated into 26 languages via web-based platforms. The findings of this study suggest that detergents, alcohol-based substances, and chlorinated compounds emerged as the most prevalent chemical agents compared to other sanitizers and disinfectants examined. Most frequently reported health issues include skin effects and respiratory effects. The Chi-square test showed a significant association between chlorinated compounds (sodium hypochlorite and per-chlorine) with all possible health effects under investigation (p-value <0.001). Examination of risk factors based on multivariate logistic regression analysis showed that alcohols and alcohols-based materials were associated with skin effects (OR, 1.98; 95%CI, 1.87-2.09), per-chlorine was associated with eye effects (OR, 1.83; 95%CI, 1.74-1.93), and highly likely with itching and throat irritation (OR, 2.00; 95%CI, 1.90-2.11). Furthermore, formaldehyde was associated with a higher prevalence of neurological effects (OR, 2.17; 95%CI, 1.92-2.44). Furthermore, formaldehyde was associated with a higher prevalence of neurological effects (OR, 2.17; 95%CI, 1.92-2.44). The use of sodium hypochlorite and per-chlorine also had a high chance of having respiratory effects. The findings of the current study suggest that health authorities need to implement more awareness programs about the side effects of using sanitizers and disinfectants during viral epidemics especially when they are used or overused.
  9. Ali S, Hamid ABBA, Ya'akub NIB, Iqbal S
    PMID: 37368217 DOI: 10.1007/s11356-023-28377-0
    The contributions of the tourism sector and its development to economic growth are widely recognized across the economies. However, development in this sector also has its impacts on environmental quality and sustainability. In addition, elevated economic policy uncertainty also has repercussions on the environment. The objective of this study is to examine the impact of international tourism on environmental sustainability while considering EPU, renewable energy consumption (REC), and service sector output (SSO) in the model estimated based on panel data from 17 economies. Having the heteroskedasticity and autocorrelation issues in the panel data, the author used multiple econometric methods (pooled OLS with Drisk/Kraay standard errors (DKSEs), GLS, PCSE, and quantile regressions) to examine the relationship between international tourism and environmental sustainability. DKSEs address the common issue of heteroskedasticity and GLS also accounts for both heteroskedasticity and autocorrelation. PCSE method corrects these errors. Finally, quantile regression estimates the relationships between variables at different points of the distribution. The results show that international tourism and EPU adversely impact environmental quality and sustainability by increasing GHG emissions. The findings show that increased GHG emissions from international tourism and EPU harm environmental sustainability. Furthermore, SSO and REC significantly reduce GHG emissions and enhance sustainability. Nevertheless, the tourism sector should adopt sustainable practices like using eco-friendly lodging, conserving energy and water, and utilizing renewable energy (RE) to reduce negative environmental impacts. Conserving biodiversity and regional cultures while minimizing waste and resource use is also essential. Tourists should embrace eco-friendly practices such as choosing green hotels, conserving energy and water, and supporting environmental causes while adhering to regulations to reduce emissions. The study recommends establishing uniform trade laws that support green technology and RE to reduce EPU. The findings stress the need for international collaboration to promote eco-friendly tourist practices and minimize the sector's environmental impact.
  10. Godman B, Haque M, Islam S, Iqbal S, Urmi UL, Kamal ZM, et al.
    Front Public Health, 2020;8:585832.
    PMID: 33381485 DOI: 10.3389/fpubh.2020.585832
    Background: Countries have introduced a variety of measures to prevent and treat COVID-19 with medicines and personal protective equipment (PPE), with some countries adopting preventative strategies earlier than others. However, there has been considerable controversy surrounding some treatments. This includes hydroxychloroquine where the initial hype and misinformation lead to shortages, price rises and suicides. Price rises and shortages have also been seen for PPE. Such activities can have catastrophic effects on patients where there are high co-payment levels and issues of affordability. Consequently, there is a need to investigate this further. Objective: Assess changes in the availability, utilization and prices of relevant medicines and PPE during the pandemic among a range of Asian countries. Our approach: Narrative literature review combined with interviews among community pharmacists to assess changes in consumption, prices and shortages of medicines and PPE from the beginning of March 2020 until end of May 2020. In addition, suggestions on ways to reduce misinformation. Results: 308 pharmacists took part from five Asian countries. There was an appreciable increase in the utilization of antimicrobials in Pakistan (in over 88% of pharmacies), with lower increases or no change in Bangladesh, India, Malaysia and Vietnam. Encouragingly, there was increased use of vitamins/immune boosters and PPE across the countries, as well as limited price rises for antimicrobials in India, Malaysia and Vietnam, although greater price rises seen for analgesics and vitamin C/immune boosters. Appreciable price increases were also seen for PPE across some countries. Conclusion: Encouraging to see increases in utilization of vitamins/immune boosters and PPE. However, increases in the utilization and prices of antimicrobials is a concern that needs addressing alongside misinformation and any unintended consequences from the pandemic. Community pharmacists can play a key role in providing evidence-based advice, helping to moderate prices, as well as helping address some of the unintended consequences of the pandemic.
  11. Rahman F, Lall P, Iqbal S, Vicknasingam B
    Harm Reduct J, 2015 Nov 05;12:52.
    PMID: 26542117 DOI: 10.1186/s12954-015-0086-6
    BACKGROUND: Out of 20,887 persons who use drugs that came into contact with the National Anti-Drugs Agency (NADA) officials in the year 2013, 3.2% were women. Because women who use drugs (WWUD) are often a hidden population, this may be an underestimate. International literature shows that women who use drugs face increased risk of HIV, intimate partner violence, and mental health issues. Similar literature in Malaysia is lacking, and thus, the objective of our study was exploratory in nature.

    METHODS: Thirty-eight women who use drugs were interviewed using a semi-structured topic guide in Kelantan, Penang, Johor, Kuala Lumpur, and Selangor. Locations were chosen purposively. Nineteen women were interviewed individually and the remaining 19 were in focus group discussions (FGDs). All interviews were transcribed verbatim, translated to English, and analyzed with NVivo.

    RESULTS: Median age of respondents was 35.5 years old, 89.5% ethnic Malays, majority having married below the age of 20, and were of low socioeconomic backgrounds. Youngest age of initiation into drug use was 9 years old. Most reported is inhalation of amphetamine-type substances. Seven reported ever injecting. Three themes emerged: (a) repeating patterns of fluid family structures and instability; (b) "pain" and "difficulty" as features of home life; and (c) seeking marriage as a source of stabilization and practices of power within those marriages. Respondents often came from very fluid family environments and married to find stability, only to be drawn into a similar cycle. None of the women who had been separated from their children either institutionally, by family members, or by third parties, had accessed legal recourse for the loss of their parental rights.

    CONCLUSION: Unstable familial relationships or environments contributed to earlier initiation of drug use which raised questions about support services for WWUD and children who use drugs. Respondents were drawn into unstable and/or abusive relationships, perpetuating social inequalities that marked their own familial environments during childhood. These findings support the need for additional services to support the unique needs of WWUD, including domestic violence services, financial and life skills, parental rights assistance, and empowerment programs.

  12. Ahmad A, Li Z, Iqbal S, Aurangzeb M, Tariq I, Flah A, et al.
    Heliyon, 2024 Mar 15;10(5):e27392.
    PMID: 38495163 DOI: 10.1016/j.heliyon.2024.e27392
    Micro-expressions (ME) are rapidly occurring expressions that reveal the true emotions that a human being is trying to hide, cover, or suppress. These expressions, which reveal a person's actual feelings, have a broad spectrum of applications in public safety and clinical diagnosis. This study provides a comprehensive review of the area of ME recognition. A bibliometric and network analysis techniques is used to compile all the available literature related to ME recognition. A total of 735 publications from the Web of Science (WOS) and Scopus databases were evaluated from December 2012 to December 2022 using all relevant keywords. The first round of data screening produced some basic information, which was further extracted for citation, coupling, co-authorship, co-occurrence, bibliographic, and co-citation analysis. Additionally, a thematic and descriptive analysis was executed to investigate the content of prior research findings, and research techniques used in the literature. The year wise publications indicated that the published literature between 2012 and 2017 was relatively low but however by 2021, a nearly 24-fold increment made it to 154 publications. The three topmost productive journals and conferences included IEEE Transactions on Affective Computing (n = 20 publications) followed by Neurocomputing (n = 17) and Multimedia tools and applications (n = 15). Zhao G was the most proficient author with 48 publications and the top influential country was China (620 publications). Publications by citations showed that each of the authors acquired citations ranging from 100 to 1225. While publications by organizations indicated that the University of Oulu had the most published papers (n = 51). Deep learning, facial expression recognition, and emotion recognition were among the most frequently used terms. It has been discovered that ME research was primarily classified in the discipline of engineering, with more contribution from China and Malaysia comparatively.
  13. Haque M, Islam S, Kamal ZM, Akter F, Jahan I, Rahim MSA, et al.
    Hosp Pract (1995), 2021 Oct;49(4):266-272.
    PMID: 33734004 DOI: 10.1080/21548331.2021.1906083
    BACKGROUND: Prevalence rates of patients with diabetes are growing across countries, and Bangladesh is no exception. Associated costs are also increasing, driven by costs associated with the complications of diabetes including hypoglycemia. Long-acting insulin analogues were developed to reduce hypoglycemia as well as improve patient comfort and adherence. However, they have been appreciably more expensive, reducing their affordability and use. Biosimilars offer a way forward. Consequently, there is a need to document current prescribing and dispensing rates for long-acting insulin analogues across Bangladesh, including current prices and differences, as a result of affordability and other issues.

    METHODS: Mixed method approach including surveying prescribing practices in hospitals coupled with dispensing practices and prices among community pharmacies and drug stores across Bangladesh. This method was adopted since public hospitals only dispense insulins such as soluble insulins free-of-charge until funds run out and all long-acting insulin analogues have to be purchased from community stores.

    RESULTS: There has been growing prescribing and dispensing of long-acting insulins in Bangladesh in recent years, now accounting for over 80% of all insulins dispensed in a minority of stores. This increase has been helped by growing prescribing and dispensing of biosimilar insulin glargine at lower costs than the originator, with this trend likely to continue with envisaged growth in the number of patients. Consequently, Bangladesh can serve as an exemplar to other low- and middle-income countries struggling to fund long-acting insulin analogues for their patients.

    CONCLUSIONS: It was encouraging to see continued growth in the prescribing and dispensing of long-acting insulin analogues in Bangladesh via the increasing availability of biosimilars. This is likely to continue benefitting all key stakeholder groups.

  14. Ismail N, Ismail M, Fathy SF, Musa SN, Imam MU, Foo JB, et al.
    Int J Mol Sci, 2012;13(8):9692-708.
    PMID: 22949825 DOI: 10.3390/ijms13089692
    The neuroprotective and antioxidative effects of germinated brown rice (GBR), brown rice (BR) and commercially available γ-aminobutyric acid (GABA) against cell death induced by hydrogen peroxide (H(2)O(2)) in human neuroblastoma SH-SY5Y cells have been investigated. Results show that GBR suppressed H(2)O(2)-mediated cytotoxicity and induced G0/G1 phase cell cycle arrest in SH-SY5Y cells. Moreover, GBR reduced mitochondrial membrane potential (MMP) and prevented phosphatidylserine (PS) translocation in SH-SY5Y cells, key features of apoptosis, and subsequent cell death. GBR exhibited better neuroprotective and antioxidative activities as compared to BR and GABA. These results indicate that GBR possesses high antioxidative activities and suppressed cell death in SH-SY5Y cells by blocking the cell cycle re-entry and apoptotic mechanisms. Therefore, GBR could be developed as a value added functional food to prevent neurodegenerative diseases caused by oxidative stress and apoptosis.
  15. Chan KW, Khong NM, Iqbal S, Umar IM, Ismail M
    Int J Mol Sci, 2012;13(7):8987-97.
    PMID: 22942747 DOI: 10.3390/ijms13078987
    Sweet potato is known to be rich in healthful antioxidants, but the stability of its antioxidant properties under gastrointestinal pH is very much unknown. Hence, this study aimed to evaluate the changes in antioxidant properties (total contents of phenolics and flavonoids as well as antioxidant activity) of sweet potato flour (SPF) under simulated gastrointestinal pH conditions. It was found that the yield of SPF crude phenolic extract increased from 0.29 to 3.22 g/100 g SPF upon subjection to gastrointestinal pH conditions (p < 0.05). Also elevated significantly were the total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity of SPF (p < 0.05). In summary, the antioxidant properties of SPF were enhanced under gastrointestinal pH conditions, suggesting that SPF might possess a considerable amount of bound phenolic and other antioxidative compounds. The antioxidant properties of SPF are largely influenced by pH and thus might be enhanced during the in vivo digestive process.
  16. Chan KW, Khong NM, Iqbal S, Ismail M
    Int J Mol Sci, 2012;13(6):7496-507.
    PMID: 22837707 DOI: 10.3390/ijms13067496
    The present study was conducted to evaluate the antioxidant properties of wheat and rice flours under simulated gastrointestinal pH condition. After subjecting the wheat and rice flour slurries to simulated gastrointestinal pH condition, both slurries were centrifuged to obtain the crude phenolic extracts for further analyses. Extraction yield, total contents of phenolic and flavonoids were determined as such (untreated) and under simulated gastrointestinal pH condition (treated). 1,1-diphenyl-2-picrylhydrazyl radical (DPPH(•)) scavenging activity, 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) radical cation (ABTS(•+)) scavenging activity, ferric reducing antioxidant power (FRAP), beta-carotene bleaching (BCB) and iron chelating activity assays were employed for the determination of antioxidant activity of the tested samples. In almost all of the assays performed, significant improvements in antioxidant properties (p < 0.05) were observed in both flours after treatment, suggesting that wheat and rice flours contain considerably heavy amounts of bound phenolics, and that their antioxidant properties might be improved under gastrointestinal digestive conditions.
  17. Chan KW, Khong NM, Iqbal S, Ch'ng SE, Younas U, Babji AS
    J Food Sci Technol, 2014 Nov;51(11):3269-76.
    PMID: 26396320 DOI: 10.1007/s13197-012-0818-5
    Cinnamon deodorised aqueous extract (CinDAE) was prepared and evaluated for its total phenolic (315.3 ± 35.4 mg GAE/g) and flavonoid (99.3 ± 9.6 mg RE/g) contents. Stabilizing efficiency of CinDAE, for chicken meatballs, was measured against oxidative deterioration as function of storage time under chilled conditions. For this purpose, oxidative stability [2-thiobarbituric acid reactive substances (TBARS); peroxide value (PV)], colour and sensory acceptability were measured in the control meatballs (C), and those stabilized with 200 ppm of: CinDAE (T1), ascorbic acid (T2), BHA/BHT (50/50; w/w) (T3). In comparison to "C", induction period (IP) and redness (a* value) of the stabilized samples (T1, T2 and T3) were increased, while PV and TBARS were decreased throughout storage (8 ± 1 °C) significantly (p 
  18. Rughubar V, Vares Y, Singh P, Filipsky A, Creanga A, Iqbal S, et al.
    J Oral Maxillofac Surg, 2020 Oct;78(10):1781-1794.
    PMID: 32589939 DOI: 10.1016/j.joms.2020.05.012
    PURPOSE: We aimed to compare complication rates and functional outcomes in patients with bilateral mandibular fractures treated with different degrees of internal fixation rigidity.

    PATIENTS AND METHODS: This international, multicenter randomized controlled trial included adults with bilateral mandibular fractures located at either the angle and body, angle and symphysis, or body and symphysis. Patients were treated with either a combination of rigid fixation for the anterior fracture and nonrigid fixation for the posterior fracture (mixed fixation) or nonrigid fixation for both fractures. The primary outcome was complications within 6 weeks after surgery. Secondary outcomes were complications within 3 months, Helkimo dysfunction index, and mandibular mobility at 6 weeks and 3 months after surgery.

    RESULTS: Of the 315 patients enrolled, 158 were randomized to the mixed fixation group and 157 to the nonrigid fixation group. The overall complication rate at 6 weeks in the intention-to-treat population was 9.6% (95% confidence interval [CI], 5.3% to 15.6%) in the mixed fixation group and 7.8% (95% CI, 4.0% to 13.5%) in the nonrigid fixation group. With an unadjusted odds ratio of 1.25 (95% CI, 0.51 to 3.17), there were no statistically significant differences in complication rates between the 2 groups (P = .591). A multivariable model for complication risk at 6 weeks found no significant differences between treatment groups, but patients with moderate or severe displacement had a higher complication rate than those with no or minimal displacement (adjusted odds ratio, 4.58; 95% CI, 1.16 to 18.06; P = .030). There were no significant between-group differences in complication rates at 3 months. Moreover, no significant differences in Helkimo dysfunction index and mandibular mobility index at 6 weeks and 3 months were found between groups according to treatment allocated and treatment received.

    CONCLUSIONS: A combination of rigid and nonrigid fixation in patients with bilateral mandibular fracture has similar complication rates and functional outcomes to nonrigid fixation for both fractures.

  19. Zainal SMIS, Hejazi F, Aziz FNAA, Jaafar MS
    Materials (Basel), 2020 Nov 10;13(22).
    PMID: 33182531 DOI: 10.3390/ma13225055
    The use of fibers in cementitious composites yields numerous benefits due to their fiber-bridging capabilities in resisting cracks. Therefore, this study aimed to improve the shear-resisting capabilities of conventional concrete through the hybridization of multiple synthetic fibers, specifically on reinforced concrete structures in seismic-prone regions. For this study, 16 hybrid fiber-reinforced concretes (HyFRC) were developed from the different combinations of Ferro macro-synthetic fibers with the Ultra-Net, Super-Net, Econo-Net, and Nylo-Mono microfibers. These hybrids were tested under direct shear, resulting in improved shear strength of controlled specimens by Ferro-Ultra (32%), Ferro-Super (24%), Ferro-Econo (44%), and Ferro-Nylo (24%). Shear energy was further assessed to comprehend the effectiveness of the fiber interactions according to the mechanical properties, dosage, bonding power, manufactured material, and form of fibers. Conclusively, all fiber combinations used in this study produced positive synergistic effects under direct shear at large crack deformations.
  20. Muhammad Iqbal, S., Bahman, J., Aslinda, C.M.
    Medicine & Health, 2020;15(1):18-33.
    MyJurnal
    Kejatuhan adalah isu kesihatan yang sering dikaitkan dengan warga emas di seluruh dunia. Kejatuhan boleh menyebabkan kesan negatif pada individu dan juga menyebabkan kematian dalam kes tertentu. Kajian semasa kejatuhan adalah amat terhad di Malaysia. Tujuan kajian ini adalah untuk merumuskan kajian semasa yang dijalankan di Malaysia yang mengenai prevalens dan ciri-cirinya. Artikel telah dikenalpasti melalui menggunakan pangkalan data elektronik berikut: EBSCOhost, ClinicalKey, ScienceDirect, Wiley Online Library, SpringerLink dan Google Scholar. Pemilihan artikel adalah terhad kepada artikel bahasa Inggeris yang diterbitkan antara tahun 2013 hingga 2019. Kajian ini menilai golongan warga emas yang berumur 60 tahun ke atas; sama ada di kediaman, komuniti atau institut perubatan. Sembilan artikel yang berkaitan telah dikenalpasti dan disiasat. Hasil kajian menunjukkan variasi yang ketara dengan julat 4-74 % dalam prevalens kejatuhan di kalangan warga emas di Malaysia. Salah satu kajian yang dijalankan dalam komuniti menunjukkan prevalens kejatuhan yang lebih rendah. Majoriti peristiwa kejatuhan berlaku pada waktu pagi seperti yang dilaporkan oleh tiga kajian iaitu sebanyak 49%-64.7%. Kejatuhan dalam kawasan bangunan adalah jumlah tertinggi lokasi jatuh dengan 50-87% manakala di luar bangunan adalah 13-49.3%. Lokasi di bilik mandi / tandas mempunyai peratusan kejatuhan tertinggi dalam bangunan. Kejatuhan yang menyebabkan kecederaan adalah antara 47% -82%. Perubahan pada prevalens kejatuhan dalam warga emas ditentukan oleh faktor-faktor seperti lokasi dan keadaan kesihatan. Maklumat yang dikumpulkan dalam kajian ini menunjukkan terdapat kekurangan alat ukur piawai bagi mengkaji ciri-ciri kejatuhan di Malaysia. Kajian prospektif diperlukan untuk menubuhkan prevalens dan hubungan faktor-kesan kejatuhan di Malaysia.
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