Recent Submissions

  • Improving energy efficiency in heritage buildings – a case of “Palazzo Farnese”, Italy

    Yenneti, Komali; Manapragada, Naga Venkata Sai Kumar; Nariman, Shervindokht; Shabanzade, Shiva (CITC, 2024-12-31)
    Historic or heritage buildings are an important component of the building stock that necessitates energy efficiency interventions. About 14% of EU27 building stock dates before 1919 and 12% dates between 1919 and 1945 (with considerable national differences). With a significant proportion of the total building stock, and high potential for energy savings or at least high enough to warrant scrutiny from an energy efficiency perspective, heritage (listed and non-listed) buildings have become a focus of special attention in Europe. The main objective of this study is to examine the potential for energy efficiency in historic buildings in Italy through the case study of ‘Palazzo Farnese’ (a 16th Century palace converted into a musuem). The key retrofit interventions considered in this study are external wall insulation, gypsum board for external walls and triple glazing. The results show that combining wall, window, and roof retrofitting resulted in a significant reduction in energy consumption. The total energy use intensity (EUI) decreased from 175.0 kWh/m2 in the Business As Usual (BAU) scenario to 151.5 kWh/m2 in the simulataneous retrofit scenario. In addition, the results reveal that wall retrofitting is the most effective individual intervention for lowering total EUI. This research demonstrated how optimal energy efficiency measures could be successfully implemented in museums while taking both conservation requirements and people's thermal comfort into account. The most influential intervention in decreasing the total EUI is wall retrofitting. The findings of this study can be useful not only for conservation architects but also for city governments and historical buildings used as museums.
  • The complex relationship between iron status and anemia in pregnant and postpartum women in India: Analysis of two Indian study cohorts of uncomplicated pregnancies

    Nair, Manisha; Choudhury, Saswati S.; Rani, Anjali; Solomi, Carolin; Kakoty, Swapna D.; Medhi, Robin; Rao, Sereesha; Mahanta, Pranabika; Zahir, Farzana; Roy, Indrani; et al. (Wiley, 2023-08-31)
    Low hemoglobin is widely used as an indicator of iron deficiency anemia in India and other low-and-middle income counties, but anemia need not accurately reflect iron deficiency. We examined the relationship between hemoglobin and biomarkers of iron status in antenatal and postnatal period. Secondary analysis of uncomplicated singleton pregnancies in two Indian study cohorts: 1132 antenatal women in third trimester and 837 postnatal women 12–72 h after childbirth. Associations of hemoglobin with ferritin in both data sets, and with sTfR, TSAT, and hepcidin in the postnatal cohort were examined using multivariable linear regression. Multinomial logistic regression was used to examine the association between severity of anemia and iron status. Regression models were adjusted for potential confounders. Over 55% of the women were anemic; 34% of antenatal and 40% of postnatal women had low ferritin, but 4% antenatal and 6% postnatal women had high ferritin. No evidence of association between hemoglobin and ferritin was observed (antenatal: adjusted coefficient [aCoef] −0.0004, 95% confidence interval [CI] −0.001, 0.001; postnatal: aCoef −0.0001, 95% CI −0.001, 0.001). We found a significant linear association of hemoglobin with sTfR (aCoef −0.04, 95% CI −0.07, −0.01), TSAT (aCoef −0.005, 95% CI −0.008, −0.002), and hepcidin (aCoef 0.02, 95% CI 0.02, 0.03) in postnatal women. Likelihood of low ferritin was more common in anemic than non-anemic women, but high ferritin was also more common in women with severe anemia in both cohorts. Causes of anemia in pregnant and postpartum women in India are multifactorial; low hemoglobin alone is not be a useful marker of iron deficiency.
  • The impact of different doses of oral iron supplementation during pregnancy: a pilot randomized trial

    Stanworth, Simon J.; Churchill, David; Sweity, Samaher; Holmes, Tom; Hudson, Cara; Brown, Rosemary; Lax, Stephanie; Murray, Joanne; Spiby, Helen; Roy, Noemi; et al. (American Society of Hematology, 2024-08-29)
    The burden of iron-deficiency anemia remains significant during pregnancy. Oral iron is first-line medication, but there is uncertainty about a range of factors including adherence and side-effects of different doses. We conducted a pilot randomized trial to investigate the impact of different doses of oral iron supplementation started early in pregnancy, in non-anemic women, for four main outcomes; recruitment and protocol compliance, adherence, maintenance of maternal hemoglobin and side-effects. Participants at antenatal clinic visits were allocated to one of three trial arms, in a 1:1:1 ratio, as 200mg ferrous sulphate daily, alternate days or three-times per week, with follow-up to delivery. Baseline characteristics of 300 recruited participants were well matched between trial arms. The mean proportion of tablets taken as expected per participant was 82.5% overall (72.3%, 89.6% and 84.5% for the daily, alternate days and three-times a week arm, respectively). There was a lower overall adherence rate in the daily arm (47%) compared with alternate days (62%) and three times per week (61%). Reduction in hemoglobin between randomization and 28 weeks appeared smaller for the daily arm. A range of side-effects were commonly reported at baseline before starting interventions, and by later antenatal visits. Many side effects of iron overlapped with normal pregnancy symptoms. A daily iron dosing schedule might give the best opportunity for delivering an adequate iron load during pregnancy in non-anemic women. Further randomized trials powered on clinical outcomes are needed to establish the clinical effectiveness of oral iron supplementation to prevent iron deficiency anemia. (ISRCTN12911644).
  • One for all and all in one: modified silica kit-based protocol for simultaneous sample-specific extraction of DNA from a variety of source materials

    Schmerer, Wera Margarete (Fortune Journals, 2022-08-31)
    Protocols utilized for the extraction of DNA vary significantly with regards to steps involved and duration of the overall procedure due to materialspecific requirements for ensuring the highest possible yield in recovery of DNA. This variation mostly affects aspects of sample preparation and digestion steps required to release the DNA from the sample material. In contexts such as the development of new PCR-based assays- which always includes a test of species-specificity- reference samples from a number of species are utilized, requiring extraction of DNA from a variety of source materials, each with their specific conditions for effective isolation of DNA. The method presented here follows the strategy of synchronizing sample material-specific aspects such as sample preparation and digestion in such a way that one common protocol can be utilized for the actual extraction and purification of the DNA, allowing for an overall more efficient extraction process, while maintaining optimized conditions for DNA recovery.
  • Micromobility sensing systems and safety services: a brief review

    Almohammad, Adel; Georgakis, Panagiotis; Renukappa, Suresh (IEEE, 2024-12-31)
    Micromobility refers to small, lightweight and low-speed personal devices including motorized (e-scooters) or non-motorized (bicycles) vehicles. However, the most vulnerable road users are riders of micromobility, including bicycles, ebikes, e-scooters and motorcycles. Additionally, the safety of micromobility devices is considered the most significant factor that influence the adoption of this mode of transportation in urban environments. Therefore, different sensing systems have been used for collecting micromobility motion data and detecting various aspects of micromobility safety. This review summarises research on micromobility sensing systems and safety services. It is organised into four topics: micromobility and sensing approaches, micromobility safety challenges and potential solutions, micromobility sensors and data acquisition methods, and micromobility safety and hazard detection. Therefore, a brief account of micromobility sensing approaches and their roles in tackling micromobility safety challenges is given. Additionally, the applications of various types of micromobility data collection methods and sensos are described. Finally, a brief overview is given of possible applications micromobility sensing data in hazard detection techniques and therefore in shaping the micromobility safety schemes.
  • Dietary phytochemicals: natural swords combating inflammation and oxidation-mediated degenerative diseases

    Islam, Md Asiful; Alam, Fahmida; Solayman, Md.; Khalil, Md Ibrahim; Kamal, Mohammad Amjad; Gan, Siew Hua; de Pablo, Yolanda; Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia. (Wiley, 2016-09-19)
    Cumulatively, degenerative disease is one of the most fatal groups of diseases, and it contributes to the mortality and poor quality of life in the world while increasing the economic burden of the sufferers. Oxidative stress and inflammation are the major pathogenic causes of degenerative diseases such as rheumatoid arthritis (RA), diabetes mellitus (DM), and cardiovascular disease (CVD). Although a number of synthetic medications are used to treat these diseases, none of the current regimens are completely safe. Phytochemicals (polyphenols, carotenoids, anthocyanins, alkaloids, glycosides, saponins, and terpenes) from natural products such as dietary fruits, vegetables, and spices are potential sources of alternative medications to attenuate the oxidative stress and inflammation associated with degenerative diseases. Based on in vitro, in vivo, and clinical trials, some of these active compounds have shown good promise for development into novel agents for treating RA, DM, and CVD by targeting oxidative stress and inflammation. In this review, phytochemicals from natural products with the potential of ameliorating degenerative disease involving the bone, metabolism, and the heart are described.
  • Editorial: autoimmunity and cardiovascular diseases

    Khandker, Shahad Saif; Kotyla, Przemysław J.; Musa, Kamarul Imran; Islam, Md Asiful; Department of Microbiology, Gonoshasthaya Samaj Vittik Medical College, Savar, Dhaka Division, Bangladesh. (Frontiers Media, 2023-07-18)
  • iCount: a human-factors engineered solution to vaginal swab retention – an early-stage innovation report

    Elgharably, Ahmed Nader; Desai, Kiran; Nevill, Alan M.; Vance, Aaron; Lester, Jon; Bonfiglio, Emma; Rigby, Colin; Forrester, Andrew; Ogrodnik, Peter; Faint, Jeffrey; et al. (BMJ, 2024-08-30)
    WHAT ARE THE NEW FINDINGS Despite established policies and procedures when swab counting, issues such as distraction, confirmation bias, competing task priorities and changes in swab appearance contribute to swab miscounts and therefore swab retention. Cases of count discrepancies/miscounts are under-reported, and their impact extends to patient’s health, clinician’s time and trust’s reputation and finances. iCount is a low-cost device designed and developed with human factors-ergonomics principles. It is a docking system that behaves as a physical checklist when swab counting and facilitates conscious engagement using visual and tactile cues when counting. Users believe iCount to be a viable alternative to manual two-person swab counting with greater time efficiency and perceived safety. This could be valuable in emergency maternity situations. HOW MIGHT IT IMPACT ON HEALTHCARE IN THE FUTURE iCount has the potential to reduce or prevent retained swabs after vaginal deliveries along with appropriate policies, training and teamwork. Additional clinical research and widespread adoption would be needed to validate this effectively.
  • Bibliometric analysis of global research activity on premature mortality

    Rodzlan Hasani, Wan Shakira; Hanis, Tengku Muhammad; Muhamad, Nor Asiah; Islam, Md Asiful; Chen, Xin-Wee; Musa, Kamarul Imran; Department of Community Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia. (MDPI, 2022-10-03)
    Premature mortality is defined as death that occurs before the average age of death for a particular population. Although premature mortality is a public health problem globally, the literature indicates no bibliometric studies that have made a holistic evaluation of the publications on this issue. This study aims to explore the characteristics of the publications on premature mortality in terms of the number of publications, citations, countries, collaboration, and the author’s productivity and to further identify the trending keyword and relevant research topics. All the articles related to premature mortality data were retrieved from the Web of Science (WOS) database using the search terms “premature death,” “premature mortality,” or “years of life loss.” The retrieved articles were downloaded in a BibTeX format file. A Bibliometrix package from R software was used to perform bibliometric analyses. A total of 1060 original research articles and reviews have been published since 1971, with a total of 5499 contributing authors. The number of publications has increased substantially in the past decade. The annual percentage growth rate of publications is 5.08%. The United States is the leading country in this area of research with the highest number of publications (n = 280), the highest total citation (17,378), and the most activity in collaboration. Our thematic map suggests that the cluster for cardiovascular disease became the main research domain in this field, while the cluster for air pollution is an important topic for future research. Additionally, neurodegeneration is another cluster of research that should be developed further and connected with premature mortality. These bibliometric findings hopefully will help scholars better understand the global overview of premature mortality and provide information for potential collaborators, with the information promising attractive areas for future research.
  • The prevalence of TET2 gene mutations in patients with BCR-ABL-negative myeloproliferative neoplasms (MPN): a systematic review and meta-analysis

    Chia, Yuh Cai; Islam, Md Asiful; Hider, Phil; Woon, Peng Yeong; Johan, Muhammad Farid; Hassan, Rosline; Ramli, Marini; Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia. (MDPI, 2021-06-20)
    Multiple recurrent somatic mutations have recently been identified in association with myeloproliferative neoplasms (MPN). This meta-analysis aims to assess the pooled prevalence of TET2 gene mutations among patients with MPN. Six databases (PubMed, Scopus, ScienceDirect, Google Scholar, Web of Science and Embase) were searched for relevant studies from inception till September 2020, without language restrictions. The eligibility criteria included BCR-ABL-negative MPN adults with TET2 gene mutations. A random-effects model was used to estimate the pooled prevalence with 95% confidence intervals (CIs). Subgroup analyses explored results among different continents and countries, WHO diagnostic criteria, screening methods and types of MF. Quality assessment was undertaken using the Joanna Briggs Institute critical appraisal tool. The study was registered with PROSPERO (CRD42020212223). Thirty-five studies were included (n = 5121, 47.1% female). Overall, the pooled prevalence of TET2 gene mutations in MPN patients was 15.5% (95% CI: 12.1–19.0%, I2 = 94%). Regional differences explained a substantial amount of heterogeneity. The prevalence of TET2 gene mutations among the three subtypes PV, ET and MF were 16.8%, 9.8% and 15.7%, respectively. The quality of the included studies was determined to be moderate–high among 83% of the included studies. Among patients with BCR-ABL-negative MPN, the overall prevalence of TET2 gene mutations was 15.5%.
  • Evaluating the impact of synthesised scent enrichment on behavioural and endocrine responses in captive alaotran gentle lemurs (Hapalemur alaotrensis)

    Costantini, Anna Beatrice; Glendewar, Gale; Fontani, Sara; Vaglio, Stefano (MDPI, 2024-09-25)
    The Alaotran gentle lemur (Hapalemur alaotrensis) is one of the world’s most endangered primates and shows low success rates in captive breeding programmes. This study tested biologically relevant scent enrichment using two synthesised mixtures likely to convey information about female fertility on the behaviour of three unsuccessful breeding pairs in captivity. Specifically, we compared the baseline and enrichment periods by combining behavioural observations (n = 240 h) with faecal endocrinology (n = 80 samples), focussing on cortisol and testosterone measurements via enzyme immunoassay techniques. Then, we tested two different mixtures to assess potential behavioural differences and evaluate the effectiveness of olfactory enrichment using scented and unscented cotton strips. Olfactory behaviours differed by sex and enrichment conditions, with both sexes exhibiting increased behaviours during enrichment compared to the baseline. Sexual behaviours increased during the enrichment period, with variations in frequency between males and females depending on the condition. No significant changes were observed in faecal cortisol levels. However, one male showed a significant increase in testosterone during the second enrichment mixture. Nevertheless, overall differences between baseline and enrichment were not significant. Our findings suggest that while the scent enrichment showed limited effectiveness, biologically meaningful scents may trigger species-specific behaviours.
  • Trigeminal neuralgia, glossopharyngeal neuralgia, and myofascial pain dysfunction syndrome: an update

    Khan, Mohammad; Nishi, Shamima Easmin; Hassan, Siti Nazihahasma; Islam, Md Asiful; Gan, Siew Hua; Community Medicine, School of Dental Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia. (Wiley, 2017-07-30)
    Neuropathic pain is a common phenomenon that affects millions of people worldwide. Maxillofacial structures consist of various tissues that receive frequent stimulation during food digestion.The unique functions (masticatory process and facial expression)of the maxillofacial structure require the exquisite organization of both the peripheral and central nervous systems. Neuralgia is painful paroxysmal disorder of the head-neck region characterized by some commonly shared features such as the unilateral pain,transience and recurrence of attacks, and superficial and shock-like pain at a trigger point.These types of pain can be experienced after nerve injury or as a part of diseases that affect peripheral and central nerve function, or they can be psychological. Since the trigeminal and glossopharyngeal nerves innervate the oral structure, trigeminal and glossopharyngeal neuralgia are the most common syndromes following myofascial pain dysfunction syndrome. Nevertheless, misdiagnoses are common. The aim of this review is to discuss the currently available diagnostic procedures and treatment options for trigeminal neuralgia, glossopharyngeal neuralgia, and myofascial pain dysfunction syndrome.
  • Smoking genes: a case–control study of dopamine transporter gene (SLC6A3) and dopamine receptor genes (DRD1, DRD2 and DRD3) polymorphisms and smoking behaviour in a Malay male cohort

    Ruzilawati, Abu Bakar; Islam, Md Asiful; Muhamed, Siti Khariem Sophia; Ahmad, Imran; Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia. (MDPI, 2020-12-03)
    Dopamine receptor and dopamine transporter genes polymorphisms have been associated with cigarette smoking behaviour in different populations. The aim of this case–control study was to evaluate polymorphisms in the dopamine transporter gene (SLC6A3 (rs27072)) and the dopamine receptor genes (DRD1 (rs686), DRD2 (rs1800497) and DRD3 (rs7653787)) and their contribution to smoking behaviour in a Malay male population. We identified 476 participants over the age of 18 years comprising 238 smokers and 238 non-smokers. Information such as age, height, weight, body mass index, systolic and diastolic blood pressures, marital status, and smoking status of close family members were taken. For the genetic study, we genotyped four genes (SLC6A3 (rs27072), DRD1 (rs686), DRD2 (rs1800497) and DRD3 (rs7653787)) using the polymerase chain reaction–restriction fragment length polymorphism method and further confirmed our findings with sequencing. Dopamine receptor genes (DRD1, DRD2 and DRD3) were found to be associated with smoking behaviour in a Malay male population. The dopamine transporter gene (SLC6A3) did not show this association. Significant differences were observed between smokers’ and non-smokers’ age, systolic blood pressure, marital status and family members who smoke. Smoking behaviour is significantly influenced by genetic variations of DRD1, DRD2 and DRD3 in a Malay male population.
  • Prevalence of headache in patients with coronavirus disease 2019 (COVID-19): a systematic review and meta-analysis of 14,275 patients

    Islam, Md Asiful; Alam, Sayeda Sadia; Kundu, Shoumik; Hossan, Tareq; Kamal, Mohammad Amjad; Cavestro, Cinzia; Department of Hematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia. (Frontiers Media, 2020-11-27)
    Background: Coronavirus disease 2019 (COVID-19) started to spread globally since December 2019 from Wuhan, China. Headache has been observed as one of the clinical manifestations in COVID-19 patients. We aimed to conduct a comprehensive systematic review and meta-analysis to estimate the overall pooled prevalence of headache in COVID-19 patients. Methods: PubMed, Scopus, ScienceDirect, and Google Scholar databases were searched to identify studies published between December 2019 and March 2020. Adult (≥18 years) COVID-19 patients were considered eligible. We used random-effects model to estimate the pooled prevalence with 95% confidence intervals (CIs). Quality assessment was done using the Joanna Briggs Institute critical appraisal tools. This study is registered with PROSPERO (CRD42020182529). Results: We identified 2,055 studies, of which 86 studies (n = 14,275, 49.4% female) were included in the meta-analysis. Overall, the pooled prevalence of headache in COVID-19 patients was 10.1% [95% CI: 8.76–11.49]. There was no significant difference of headache prevalence in severe or critical vs. non-severe (RR: 1.05, p = 0.78), survived (recovered or discharged) vs. non-survived (RR: 1.36, p = 0.23), and ICU vs. non-ICU (RR: 1.06, p = 0.87) COVID-19 patients. We detected 64.0, 34.9, and 1.1% of the included studies as high, moderate, and low quality, respectively. Conclusions: From the first 4-month data of the outbreak, headache was detected in 10.1% of the adult COVID-19 patients.
  • Prevalence of antiphospholipid antibodies in Behçet’s disease: a systematic review and meta-analysis

    Islam, Md Asiful; Alam, Sayeda Sadia; Kundu, Shoumik; Safayet Ullah Prodhan, A.H.M.; Khandker, Shahad Saif; Reshetnyak, Tatiana; Kotyla, Przemysław J.; Hassan, Rosline; Hossan, Tareq; Ashraf, Ghulam Md; et al. (Public Library of Science, 2020-01-13)
    Behçet’s disease (BD) is a multifactorial systemic inflammatory disease of unknown aetiology characterised by several clinical manifestations including vascular involvements (i.e., both arterial and venous thrombosis). Antiphospholipid antibodies (aPLs)—including anticardiolipin (aCL), anti-β2-glycoprotein I (β2-GPI) antibodies and lupus anticoagulant (LA) are detected in systemic autoimmune diseases which contribute to thrombosis. The aim of this systematic review and meta-analysis was to evaluate the prevalence of aPLs in patients with BD as compared to controls. A protocol was registered in PROSPERO (Registration No. CRD42018088125) and a systematic literature search was conducted through PubMed, Web of Science, Embase, Scopus and ScienceDirect databases. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using random-effects model. Quality assessment was carried out by using the modified 9-star Newcastle-Ottawa Scale (NOS). Publication bias was evaluated via visualisation of contour- enhanced and trim and fill funnel plots along with Begg’s and Egger’s tests. We included ten case-control studies (a total of 999 participants from 380 BD patients and 619 controls) based on the inclusion criteria. The prevalence of aCL (OR: 12.10, 95% CI: 5.15–28.41, p<0.00001) and anti-β2-GPI antibodies (OR: 23.57, 95% CI: 1.31–423.63, p = 0.03) were statistically significant, however, the prevalence of LA was not significant (OR: 13.77, 95% CI: 0.65–293.59, p = 0.09). The results remained statistically significant from different sensitivity analyses which represented the robustness of this meta-analysis. According to the NOS, 50.0% of the studies were considered as of high methodological quality (low risk of bias). No significant publication bias was detected from contour-enhanced and trim and fill funnel plots or Begg’s and Egger’s tests. This meta-analysis established that there is a significantly high prevalence of aPLs (i.e., aCL and anti-β2-GPI antibodies) in patients with BD when compared to controls.
  • Prevalence of antibiotic-resistant pulmonary tuberculosis in Bangladesh: a systematic review and meta-analysis

    Kundu, Shoumik; Marzan, Mahfuza; Gan, Siew Hua; Islam, Md Asiful; Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh. (MDPI, 2020-10-17)
    Resistance to anti-tuberculosis (anti-TB) antibiotics is a major public health concern for many high-TB burden countries in Asia, including Bangladesh. Therefore, to represent the overall drug-resistance pattern against TB in Bangladesh, a systematic review and meta-analysis was conducted. Databases such as PubMed, Scopus, and Google Scholar were searched to identify studies related to antibiotic-resistant TB. A total of 24 studies covering 13,336 patients with TB were secured and included. The random-effects model was used to calculate the summary estimates. The pooled prevalence of any, mono, multi, poly, and extensive anti-TB antibiotic-resistances were 45.3% [95% CI: 33.5–57.1], 14.3% [95% CI: 11.4–17.2], 22.2% [95% CI: 18.8–25.7], 7.7% [95% CI: 5.6– 9.7], and 0.3% [95% CI: 0.0–1.0], respectively. Among any first and second-line anti-TB drugs, isoniazid (35.0%) and cycloserine (44.6%) resistances were the highest, followed by ethambutol (16.2%) and gatifloxacin (0.2%). Any, multi, and poly drug-resistances were higher in retreatment cases compared to the newly diagnosed cases, although mono drug-resistance tended to be higher in newly diagnosed cases (15.7%) than that in retreatment cases (12.5%). The majority (82.6%) of the included studies were of high quality, with most not exhibiting publication bias. Sensitivity analyses confirmed that all outcomes are robust and reliable. It is concluded that resistance to anti-TB drugs in Bangladesh is rampant and fast growing. Therefore, the implementation of a nationwide surveillance system to detect suspected and drug-resistant TB cases, as well as to ensure a more encompassing treatment management by national TB control program, is highly recommended.
  • Potentials and safety of date palm fruit against diabetes: A critical review

    Mia, Md Al-Tareq; Mosaib, MD Golam; Khalil, Md Ibrahim; Islam, Md Asiful; Gan, Siew Hua; Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; Laboratory of Preventive and Integrative Biomedicine, Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh. (MDPI AG, 2020-10-28)
    Diabetes is a chronic metabolic disorder triggered by disturbances in carbohydrate, protein, and lipid metabolisms, where either reduced secretion or sensitivity of insulin is observed coupled with poor glucose control. Date palm fruits are one of the fruits reported to have good potential in diabetes treatment due to its presence of polyphenols exerting strong antioxidant activities. Other possible mechanisms of action include the polyphenolic compounds, which can inhibit enzymes like α-amylase and α-glucosidase. Flavonoids in dates can stimulate β-cells by increasing the number of islets and β-cells, recovering endocrine pancreatic tissues, reducing β-cell apoptosis, activating insulin receptors following the increase in insulin secretion, in addition to improving diabetes-induced complications. In this review, the in vitro, in vivo, and human study-based evidence of date palm as an anti-diabetic fruit is summarised.
  • Presence of anticardiolipin antibodies in patients with dementia: A systematic review and meta-analysis

    Islam, Md Asiful; Alam, Fahmida; Kamal, Mohammad Amjad; Gan, Siew Hua; Sasongko, Teguh Haryu; Wong, Kah Keng; Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia; Human Genome Centre, School of Medical Sciences, Universiti Sains MalaysiaKubang Kerian, Malaysia. (Frontiers Media SA, 2017-08-02)
    Growing evidences are supporting towards the involvement of antiphospholipid antibodies [aPLs e.g., lupus anticoagulant (LA), anticardiolipin (aCL) and anti-β2-glycoprotein I (anti-β2-GPI) antibodies] in various neurological manifestations including migraine, epilepsy and dementia in the presence or absence of autoimmune diseases such as antiphospholipid syndrome or systemic lupus erythematosus. The aim of this systematic review and meta-analysis was to assess the presence of aPLs in dementia patients without a diagnosis of any autoimmune disease. Electronic databases (e.g., PubMed, Web of Science, Scopus, ScienceDirect and Google Scholar) were searched without any year or language restrictions and based on the inclusion criteria, nine prospective case-control studies assessing only aCL were included involving 372 dementia patients and 337 healthy controls. No studies were found to assess the presence of both LA or anti-β2-GPI. The study-specific odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using random-effects model. We observed the prevalence of aCL in dementia was higher (32.80%) than that of controls (9.50%) e.g., 3.45 times higher risk of presenting with dementia than the controls, and significant presence of aCL antibodies was detected in dementia patients compared to controls (OR: 4.94, 95% CI: 2.66 - 9.16, p < 0.00001; I2 = 32%, p = 0.16). Publication bias was not observed from Egger's (p = 0.081) and Begg's tests (p = 0.180). Based on the study quality assessment using modified Newcastle-Ottawa Scale for case-control studies, seven of nine studies were of high methodological quality scoring ≥ 7 (median value). In summary, aCL antibodies were significantly present in dementia patients suggesting that aCL antibodies are generated due to the autoimmune-derived effects of dementia or there might be a potential causative role of this autoantibody in dementia pathogenesis.
  • Physicochemical and antioxidant properties of Bangladeshi honeys stored for more than one year

    Islam, Md Asiful; Khalil, Ibrahim; Islam, Nazmul; Moniruzzaman, Mohammad; Mottalib, Abdul; Sulaiman, Siti Amrah; Gan, Siew Hua; Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia; Human Genome Centre, School of Medical Sciences, Universiti SainsMalaysia, 16150 Kubang Kerian, Kelantan, Malaysia. (Springer Science and Business Media LLC, 2012-10-08)
    Background: There is no available information on physicochemical and antioxidant properties on Bangladeshi honey. We investigated five different monofloral and three different multifloral honey samples collected from different parts of Bangladesh.Methods: The levels of phenolics, flavonoids, ascorbic acid, ascorbic acid equivalent antioxidant content (AEAC), proline, protein and antioxidants were determined in the honey samples using ferric reducing antioxidant power (FRAP) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays.Results: The highest level of phenolic was 688.5 ± 5.9 mg Gallic acid/kg, and the highest level of flavonoid was 155 ± 6.9 mg Catechin/kg. The highest color intensity was 2034.00 ± 17.5 mAU, and the highest protein content was 8.6 ± 0.0mg/g. High levels of proline (2932.8 ± 3.7 mg/kg), ascorbic acid (154.3 ± 0.3 mg/kg), AEAC (34.1 ± 1.4mg/100 g) and FRAP (772.4 ± 2.5 μmol Fe (II)/100 g) were detected in some of the samples, especially the multifloral honey samples, indicating good antioxidant properties. A strong positive correlation was found between phenolics, flavonoids, DPPH, FRAP and color intensity, indicating that in addition to total phenolic and flavonoid concentrations, color intensity and amino acid are good indicators of the antioxidant potential of honey. Except for a single sample (BDH-6), the honey samples stored for 1.5 years at room temperature still had 5-hydroxymethylfurfural (HMF) values within the recommended range (mean = 10.93 mg/kg), indicating that the rate of HMF production in Bangladeshi honey samples is low.Conclusion: It is postulated that the low rate of HMF formation could be attributed to the acidic and low moisture content in the samples. In general, multifloral honeys have higher antioxidant properties based on their high levels of phenolics, flavonoids, AEAC, DPPH and FRAP when compared to monofloral honeys. We also found that monofloral honey samples from Guizotia abyssinica and Nigella sativa had high antioxidant properties. © 2012 Islam et al.; licensee BioMed Central Ltd.
  • Microrna (Mirna): A new dimension in the pathogenesis of antiphospholipid syndrome (APS)

    Kotyla, Przemysław J.; Islam, Md Asiful; Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia; Department of Internal Medicine, Rheumatology and Clinical Immunology, Faculty in Katowice, Medical University of Silesia, 40-635 Katowice, Poland. (MDPI AG, 2020-03-18)
    MicroRNAs (miRNAs) are single-stranded, endogenous RNA molecules that play a significant role in the regulation of gene expression as well as cell development, differentiation, and function. Recent data suggest that these small molecules are responsible for the regulation of immune responses. Therefore, they may act as potent modulators of the immune system and play an important role in the development of several autoimmune diseases. Antiphospholipid syndrome (APS) is an autoimmune systemic disease characterized by venous and/or arterial thromboses and/or recurrent fetal losses in the presence of antiphospholipid antibodies (aPLs). Several lines of evidence suggest that like other autoimmune disorders, miRNAs are deeply involved in the pathogenesis of APS, interacting with the function of innate and adaptive immune responses. In this review, we characterize miRNAs in the light of having a functional role in the immune system and autoimmune responses focusing on APS. In addition, we also discuss miRNAs as potential biomarkers and target molecules in treating APS.

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