Displaying publications 861 - 880 of 6712 in total

Abstract:
Sort:
  1. Nastiti NA, Niam MS, Khoo PJ
    Int J Surg Case Rep, 2019;61:91-95.
    PMID: 31352320 DOI: 10.1016/j.ijscr.2019.07.021
    INTRODUCTION: Wandering spleen (WS) is an uncommon congenital or acquired condition where the spleen is displaced from its normal position at the left hypochondrium to anywhere within the abdominal or pelvic cavity. The incidence is extremely rare in the geriatric population.

    PRESENTATION OF CASE: We present a rare case of WS torsion in a 69-year-old elderly patient who presented with an acute abdomen. Physical examination revealed a tender right lower quadrant abdominal mass. Imaging studies confirmed the diagnosis of WS torsion with features of infarction. Subsequently, an emergency laparoscopic splenectomy was performed.

    DISCUSSION: A WS occurs due to the hypermobility of the spleen secondary to the absence or laxity of splenic suspensory ligaments. It is more commonly seen in children and adults in the third decade of life. Symptoms are usually attributed to the consequences of splenic vascular pedicle torsion. Exhibited symptoms might be unspecific; thus, radiological modalities are essential to determine the diagnosis and aid in planning its management. The treatment of choice is either open or laparoscopic splenopexy or splenectomy.

    CONCLUSION: Due to potentially life-threatening consequences and the rarity of such cases, a thorough history, detailed physical examination, and objective investigation are the pillars to attain a prompt diagnosis for appropriate management to be conducted as soon as possible to minimise complications.

  2. Daghash H, Lim Abdullah K, Ismail MD
    J Eval Clin Pract, 2020 Aug;26(4):1280-1291.
    PMID: 31489762 DOI: 10.1111/jep.13280
    BACKGROUND: Health care institutions need to construct management strategies for patients diagnosed with acute coronary syndrome (ACS) that focus on evidence-based treatments, adherence to treatment guidelines, and organized care. These help to reduce variations as well as the mortality and morbidity rates, which indicates the critical need for standardized care and adherence to evidence-based practices for patients hospitalized with ACS. The care pathways translate research and guidelines into clinical practice to close the gap between the guidelines and the clinical practices.

    OBJECTIVES: This review focuses on identifying the indicators used to evaluate ACS care pathways and their effect on the care process and clinical outcomes.

    METHODS: This review follows the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. The systematic research was conducted using five research databases. Two groups were created by dividing the studies according to their year of publication. The first group included those studies published from 1997 to 2007 ("Group 1"), while the second included those published from 2008 to 2018 ("Group 2"). Selected studies were screened using the Effective Public Health Practice Project (EPHPP) quality assessment tool.

    RESULTS: Seventeen studies were included in this review. One study was a randomized controlled trial, 14 were predesigns and postdesigns, and two were longitudinal observational designs. The Group 1 studies demonstrated that ACS care pathways had a positive effect on reducing the length of the hospital stay and the door-to-balloon times. Similar effects were observed for the Group 2 studies.

    CONCLUSION: Implementing ACS care pathway helps to organize care processes and decrease treatment delays as well as improve the patient outcomes without adverse consequences for patients or additional resources and costs. While the current level of evidence is inadequate to warrant a formal recommendation, there is a need for more studies with an emphasis on well-designed randomization to measure patient outcomes.

  3. Mohd Salim NS, Umar MA, Shaharudin S
    J Taibah Univ Med Sci, 2018 Dec;13(6):576-581.
    PMID: 31435381 DOI: 10.1016/j.jtumed.2018.10.007
    Objectives: The isokinetic evaluation of the ankle joint is important in determining the effectiveness of the rehabilitation programme for the management of ankle sprains. This study aimed to determine the effects of physiotherapy programme on isokinetic variables in individuals with grade I ankle sprains.

    Methods: Seven patients with acute grade 1 ankle sprain (15 days of ankle sprain) were recruited. They were provided with 7 days of protection, optimal loading, ice, compression, and elevation (POLICE) treatment, and the standard physiotherapy programme consisted of towel stretching and balancing exercises on one leg. Pain scale score was recorded daily during the physiotherapy programme. The isokinetic ankle strengths of the patient's injured and uninjured legs were compared before and after the physiotherapy programme. Isokinetic tests were conducted in painless range of motion for the injured leg.

    Results: Pain was significantly reduced after the patients underwent the standard physiotherapy programme. No significant differences were observed in terms of the ankle peak torque, time to peak torque, and ankle plantar flexion-to-dorsiflexion ratio of the injured and uninjured legs. The injured leg showed significant improvement in terms of ankle eversion-to-inversion ratio (E:I) after 7 days of performing the standard physiotherapy programme.

    Conclusion: Performing the standard physiotherapy programme for 1 week reduces pain and improves the ankle E:I in patients with grade 1 ankle sprain.

  4. Aris A, Sulaiman S, Che Hasan MK
    Enferm Clin, 2019 09;29 Suppl 2:16-23.
    PMID: 31208927 DOI: 10.1016/j.enfcli.2019.04.004
    OBJECTIVE: The objective of this study was to investigate whether music therapy affects immediate postoperative well-being among patients who had undergone TKA surgery in the recovery unit.

    METHOD: A randomized controlled trial was conducted recruiting patients from Hospital Melaka, Malaysia. Postoperative TKA patients with good hearing and visual acuity, fully conscious and prescribed with patients controlled analgesia (PCA) were randomized to either intervention or control groups using a sealed envelope. Patients in the intervention group received usual care with additional music therapy during recovery, while patients in the control group received the usual care provided by the hospital. Two factors identified affecting mental well-being were the pain (measured using numerical rating scale) and anxiety (measured using a visual analog scale) at five different minutes' points (0, 10, 20, 30, and 60).

    RESULTS: A total of 56 (control: 28, intervention: 28) postoperative TKA patients consented in the study. There was no difference in baseline characteristics between the two groups (p>0.05). Using Mann-Whitney U tests, patients in music therapy group showed significantly lower numerical pain score at 60min (p=0.045) whereas there was no significant difference between the two groups at all time points for anxiety scores (p>0.05). In the intervention group, Friedman tests showed that there was a significant difference in numerical pain (χ2=36.957, df=4, p<0.001) and anxiety score across times (χ2=18.545, p=0.001).

    CONCLUSIONS: This study found that pain score decreases over time among patients in the music therapy group while no effect is seen for anxiety. It is suggested that music therapy could not affect postoperative TKA patients' mental well-being. Nonetheless, patients reported better pain score despite the small sample.

  5. Gill MSA, Hassan SS, Ahemad N
    Eur J Med Chem, 2019 Oct 01;179:423-448.
    PMID: 31265935 DOI: 10.1016/j.ejmech.2019.06.058
    HIV infection is a major challenge to mankind and a definitive cure or a viable vaccine for HIV is still elusive. HIV-1 is constantly evolving and developing resistant against clinically used anti-HIV drugs thus posing serious hurdles in the treatment of HIV infection. This prompts the need to developed new anti-HIV drugs; preferentially adopting intelligent ways to counteract an evolving virus. Highly Active Anti-Retroviral Therapy (HAART): a strategy involving multiple targeting through various drugs has proven beneficial in the management of AIDS. However, it is a complex regimen with high drug load, increased risk of drug interactions and adverse effects, which lead to poor patient compliance. Reverse transcriptase (RT) and Integrase (IN) are two pivotal enzymes in HIV-1 lifecycle with high structural and functional analogy to be perceived as drug-able targets for novel dual-purpose inhibitors. Designed multi-functional ligand (DML) is a modern strategy by which multiple targets can be exploited using a single chemical entity. A single chemical entity acting on multiple targets can be much more effective than a complex multi-drug regimen. The development of such multifunctional ligands is highly valued in anti-HIV drug discovery with the proposed advantage of being able to stop two or more stages of viral replication cycle. This review will encompass the evolution of the RT-IN dual inhibitory scaffolds reported so far and the contribution made by the leading research groups over the years in this field.
  6. Ramli MI, Hamzaid NA, Engkasan JP
    J Voice, 2019 Jul 09.
    PMID: 31300185 DOI: 10.1016/j.jvoice.2019.06.006
    OBJECTIVES: The aim of this study was to investigate the performance of mechanomyography (MMG) and electromyography (EMG) in monitoring the sternocleidomastoid (SCM) as accessory respiratory muscles when breathing during singing.

    METHODS: MMG and EMG were used to record the activity of the SCM in 32 untrained singers reciting a monotonous text and a standard folk song. Their voices were recorded and their pitch, or fundamental frequency (FF), and intensity were derived using Praat software. Instants of inhale and exhales were identified during singing from their voice recordings and the corresponding SCM MMG and EMG activities were analysed.

    RESULTS: The SCM MMG, and EMG signals during breathing while singing were significantly different than breathing at rest (p < 0.001). On the other hand, MMG was relatively better correlated to voice intensity in both reading and singing than EMG. EMG was better, but not significantly, correlated with FF in both reading and singing as compared to MMG.

    CONCLUSIONS: This study established MMG and EMG as the quantitative measurement tool to monitor breathing activities during singing. This is useful for applications related to singing therapy performance measure including potentially pathologically effected population. While the MMG and EMG could not distinguish FF and intensity significantly, it is useful to serve as a proxy of inhalation and exhalation levels throughout a particular singing session. Further studies are required to determine its efficacy in a therapeutic setting.

  7. Taqi M, Razak IA, Ab-Murat N
    J Pak Med Assoc, 2019 Jul;69(7):950-954.
    PMID: 31308560
    OBJECTIVE: To assess and compare the dental caries status among children using two methods..

    METHODS: The cross-sectional study was conducted in October-November 2017 at five government and two private schools in Bhakkar, Punjab, Pakistan. It comprised children aged 11-12 years. World Health Organisation standards and the modified International Caries Detection and Assessment Systems methods were used were used to determine the dental caries status of each subject. Results of the two methods were compared at all cut- offs where appropriate, using SPSS 17.

    RESULTS: Of the 183 subjects, 101(55.2%) were boys. Those aged 12 years were 112(61.2%) while 71(38.8%) were aged 11 years. There was no statistically significant difference in values of the Decayed Missing and Filled Surface / Decayed Missing and Filled Teeth index as well as the prevalence of dental caries between two methods (p>0.05 each). Intra-examiner reproducibility was higher with the World Health Organisation method compared to the other index used (p<0.05).

    CONCLUSIONS: Modified International Caries Detection and Assessment Systems method can be used in epidemiological surveys as it was found to provide results similar to the World Health Organisation criteria at cut-off point 2.

  8. Muhammad Aklil, A.R., Aznida, M.Z., Azman A., Muhammad Haneef, A., Nik Him, N.A.S., Syed Sharizman, S.A.R., et al.
    MyJurnal
    Leptospirosis is one of the most widespread re-emerging zoonoses in the world. Malaysia is known to
    be an endemic country for human leptospirosis, with a case fatality rate of 2.11%, and an average annual
    incidence rate of 7.80 cases per 100,000 individuals. This systematic review is conducted to determine
    the effectiveness of antibiotic prophylaxis for leptospirosis among the adult populations who are highly
    at risk of getting infected. A systematic search was performed for the relevant titles, abstracts and
    keywords on PubMed, Scopus, Cochrane and Google Scholar from inception to November 2017 based
    on the PICO strategy; which returned 126 studies. Screening of abstracts had shortlisted 19 studies and
    data extraction was conducted for 8 studies which had been accepted after review of the full text. For
    the evaluation of antibiotics prophylaxis effectiveness against leptospirosis, only trials and cohort studies
    with risk ratio (RR) were selected. The articles were analyzed from the viewpoint of the dosage, adverse
    effects, study settings and effectiveness of the antibiotic prophylaxis. Using fixed effects model, pooled
    RR showed protective association between antibiotic prophylaxis use against the incidence of
    leptospirosis (RR = 0.31; 95% CI: 0.20, 0.48). Antibiotic prophylaxis for leptospirosis had been shown
    to be effective in preventing the incidence of the disease among high-risk populations and carries
    minimal adverse effects. It is recommended that the practice of antibiotic prophylaxis for leptospirosis is
    included in the standard protocol for leptospirosis prevention among people at high-risk, including
    disaster response teams and patrons of eco-sports tourism activities; with the drug of choice being
    doxycycline, either as a single 200 mg dose or weekly dose of 200 mg for the duration of exposure,
    based on the setting, duration of event and resources available.
  9. Sul ‘ain MD, Zakaria F, Johan MF
    Asian Pac J Cancer Prev, 2019 Jan 25;20(1):185-192.
    PMID: 30678430
    Background: Cervical cancer is one of the most commonly diagnosed neoplasms and a leading cause of cancer
    death among females worldwide. Limitations with conventional medical treatments have driven researchers to
    search for alternative approaches using natural products. This study aimed to detemine potential anti-proliferative
    effects of methanol and water extracts of Pyrrosia piloselloides (P. piloselloides) on the HeLa cell line. Methods:
    3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays were performed to determine IC50
    concentrations and apoptosis analysis was by flow cytometry. To identify chemical compounds in the extracts, gas
    chromatography-mass spectrometry (GC-MS) was employed. Results: P. piloselloides methanol extracts (PPME) showed
    antiproliferative effects on HeL awith an IC50 of 16.25μg/mL while the P. piloselloides water extract (PPWE) was without
    influence. Neither extract showed any significant effects on apoptosis. GC-MS analysis, revealed 5-hydroxymethylfurfural
    (23.1%), allopurinol (8.66%) and 3, 5-dihydroxy-6-methyl-2,3-dihydropyran-4-one (7.41%) as major components in
    the PPME, while sulfolan-3-ol (10.1%), linoleic acid (9.06%) and β-sitosterol acetate (7.98%) predominated in the
    PPWE case. Conclusion: This first study of P. piloselloides showed PPME to exert potent anti-proliferative effect on
    HeLa cell lines. Further research now needs to be performed to establish the mechanisms of inhibition.
  10. Umair M, Azis N, Halis R, Jasni J
    Materials (Basel), 2020 Nov 06;13(21).
    PMID: 33171971 DOI: 10.3390/ma13215002
    This paper presents an investigation on the physio-mechanical properties and AC breakdown voltage of the Kenaf paper in the presence of Polyvinyl Alcohol (PVA) for transformers application. Kenaf bast fibers were used in order to produce the paper through the soda pulping process. The pulps were subjected to beating up to 12,000 revolutions, whereby the PVA was added to the pulps at a different weight percentage concentration up to 12%. Morphological study was carried out on the Kenaf paper based on Scanning Electron Microscopy (SEM). The apparent density, Tensile Index (TI), Burst Index (BI), Tear Index (TeI), and AC breakdown voltage of the Kenaf paper were measured. It is found that the TI and BI of Kenaf paper can be slightly improved through the introduction of PVA. On other hand, the TeI of the Kenaf paper decreases with the increment of the PVA. The AC breakdown voltage of the Kenaf paper slightly increases with the increment of PVA weight percentage concentration.
  11. Shafie MH, Yusof R, Gan CY
    Carbohydr Polym, 2019 Jul 15;216:303-311.
    PMID: 31047070 DOI: 10.1016/j.carbpol.2019.04.007
    The Box-Behnken design was applied to optimize the extraction of pectin from Averrhoa bilimbi (ABP) using deep eutectic solvents (DES). The four variables of extraction were percentage of DES (X1), extraction time (X2), temperature (X3), and molar ratio of DES components (X4). The quadratic regression equation was established as a predicted model with R2 value of 0.9375. The optimal condition was X1 = 3.74% (w/v), X2 = 2.5 h, X3 = 80 °C, and X4 = 1:1. No significant difference between the predicted (14.70%) and experimental (14.44%) maximum yield of sample was noted. Characterization of physico-chemical properties characterization of ABP was performed. The main components of ABP were galacturonic acids, arabinoses, and xyloses. ABP also showed good functional properties such as water holding capacity (3.70 g/g), oil holding capacity (2.40 g/g), and foaming capacity (133.33%). The results also showed that ABP exhibited free radical scavenging activity (41.46%) and ferric reducing antioxidant power (1.15 mM).
  12. Hassan NH, Aljunid SM, Nur AM
    BMC Health Serv Res, 2020 Oct 14;20(1):945.
    PMID: 33054861 DOI: 10.1186/s12913-020-05776-4
    BACKGROUND: The current healthcare sector consists of diverse services to accommodate the high demands and expectations of the users. Nursing plays a major role in catering to these demands and expectations, but nursing costs and service weights are underestimated. Therefore, this study aimed to estimate the nursing costs and service weights as well as identify the factors that influence these costs.

    METHODS: A retrospective cross-sectional descriptive study was conducted at Universiti Kebangsaan Malaysia Medical Centre (UKMMC) using 85,042 hospital discharges from 2009 to 2012. A casemix costing method using the step-down approach was used to derive the nursing costs and service weights. The cost analysis was performed using the hospital data obtained from five departments of the UKMMC: Finance, Human Resource, Nursing Management, Maintenance and Medical Information. The costing data were trimmed using a low trim point and high trim point (L3H3) method.

    RESULTS: The highest nursing cost and service weights for medical cases were from F-4-13-II (bipolar disorders including mania - moderate, RM6,129; 4.9871). The highest nursing cost and service weights for surgical cases were from G-1-11-III (ventricular shunt - major, RM9,694; 7.8880). In obstetrics and gynaecology (O&G), the highest nursing cost and service weights were from O-6-10-III (caesarean section - major, RM2,515; 2.0467). Finally, the highest nursing cost and service weights for paediatric were from P-8-08-II (neonate birthweight > 2499 g with respiratory distress syndrome congenital pneumonia - moderate, RM1,300; 1.0582). Multiple linear regression analysis showed that nursing hours were significantly related to the following factors: length of stay (β = 7.6, p 

  13. ul Hassan MN, Zainal Z, Ismail I
    Plant Biotechnol J, 2015 Aug;13(6):727-39.
    PMID: 25865366 DOI: 10.1111/pbi.12368
    Plants have evolved numerous constitutive and inducible defence mechanisms to cope with biotic and abiotic stresses. These stresses induce the expression of various genes to activate defence-related pathways that result in the release of defence chemicals. One of these defence mechanisms is the oxylipin pathway, which produces jasmonates, divinylethers and green leaf volatiles (GLVs) through the peroxidation of polyunsaturated fatty acids (PUFAs). GLVs have recently emerged as key players in plant defence, plant-plant interactions and plant-insect interactions. Some GLVs inhibit the growth and propagation of plant pathogens, including bacteria, viruses and fungi. In certain cases, GLVs released from plants under herbivore attack can serve as aerial messengers to neighbouring plants and to attract parasitic or parasitoid enemies of the herbivores. The plants that perceive these volatile signals are primed and can then adapt in preparation for the upcoming challenges. Due to their 'green note' odour, GLVs impart aromas and flavours to many natural foods, such as vegetables and fruits, and therefore, they can be exploited in industrial biotechnology. The aim of this study was to review the progress and recent developments in research on the oxylipin pathway, with a specific focus on the biosynthesis and biological functions of GLVs and their applications in industrial biotechnology.
  14. Chong W, Musa MSH, Sugumaran V
    Emerg Med J, 2020 Jul;37(7):436-443.
    PMID: 32616656 DOI: 10.1136/emermed-2019-209395
  15. Gill MSA, Saleem H, Ahemad N
    Curr Top Med Chem, 2020;20(12):1093-1104.
    PMID: 32091334 DOI: 10.2174/1568026620666200224100219
    Natural Products (NP), specifically from medicinal plants or herbs, have been extensively utilized to analyze the fundamental mechanisms of ultimate natural sciences as well as therapeutics. Isolation of secondary metabolites from these sources and their respective biological properties, along with their lower toxicities and cost-effectiveness, make them a significant research focus for drug discovery. In recent times, there has been a considerable focus on isolating new chemical entities from natural flora to meet the immense demand for kinase modulators, and also to overcome major unmet medical challenges in relation to signal transduction pathways. The signal transduction systems are amongst the foremost pathways involved in the maintenance of life and protein kinases play an imperative part in these signaling pathways. It is important to find a kinase inhibitor, as it can be used not only to study cell biology but can also be used as a drug candidate for cancer and metabolic disorders. A number of plant extracts and their isolated secondary metabolites such as flavonoids, phenolics, terpenoids, and alkaloids have exhibited activities against various kinases. In the current review, we have presented a brief overview of some important classes of plant secondary metabolites as kinase modulators. Moreover, a number of phytocompounds with kinase inhibition potential, isolated from different plant species, are also discussed.
  16. Saat MN, Mohamad Annuar MS
    Biotechnol Appl Biochem, 2020 May;67(3):354-365.
    PMID: 31746015 DOI: 10.1002/bab.1859
    One-pot synthesis of sugar-functionalized oligomeric caprolactone was carried out by lipase-catalyzed esterification of ε-caprolactone (ECL) with methyl-d-glucopyranoside (MGP) followed by the elongation of functionalized oligomer chain. Functionalization was performed in a custom-fabricated glass reactor equipped with Rushton turbine impeller and controlled temperature at 60 °C using tert-butanol as reaction medium. The overall reaction steps include MGP esterification of ECL monomer and its subsequent elongation by free 6-hydroxyhexanoate monomer units. A ping-pong bi-bi mechanism without ternary complex was proposed for esterification of ECL and MGP with apparent values of kinetic constant, namely maximal velocity (Vmax ), Michaelis constant for MGP (KmMGP ), and Michaelis constant for ECL (KmECL ) at 3.848 × 10-3  M H-1 , 8.189 × 10-2  M, and 6.050 M, respectively. Chain propagation step of MGP-functionalized ECL oligomer exhibits the properties of living polymerization mechanism. Linear relationship between conversion (%) and number average molecular weight, Mn (g mol-1 ), of functionalized oligomer was observed. Synthesized functionalized oligomer showed narrow range of molecular weight from 1,400 to 1,600 g mol-1 with more than 90% conversion achieved. Structural analysis confirmed the presence of covalent bond between the hydroxyl group in MGP with carboxyl end group of ECL oligomer.
  17. Che Hasan MK, Stanmore E, Todd C
    Front Public Health, 2020;8:612413.
    PMID: 33585384 DOI: 10.3389/fpubh.2020.612413
    Background: Functional limitationscommonly affect patients with knee osteoarthritis (OA) which reduces quality of life. The Enabling Self-management and Coping with Arthritic Pain using Exercise (ESCAPE-pain) is an evidence-based programme identified to be suitable for adaptation for the Malaysian health care system. It is important to understand the acceptance from a sociocultural context of the ESCAPE-pain programme from the perspectives of patients with knee OA and healthcare professionals. This qualitative study aims to explore the perspectives of stakeholders to inform the adaptation of the ESCAPE-pain programme into the Malaysian health care system. Method: Semi-structured interviews using interview guides were conducted with 18 patients with knee OA and 14 healthcare professionals including nurses, physiotherapists, occupational therapists, medical doctors, and orthopedic surgeons. The data were transcribed and analyzed using framework analysis. Results: The findings show that patients and healthcare professionals positively accept the programme into their daily living activities and recommend some modifications related to the Malaysian context. This study also highlights strategies to adopt when providing ESCAPE-pain to patients with knee OA. Conclusion: The findings reveal how sociocultural considerations could facilitate uptake and engagement with the ESCAPE-pain programme for home exercise among patients with knee osteoarthritis. These findings may benefit t patients with knee OA in the Malaysian healthcare system, although future research is recommended.
  18. Hayat MN, Kaka U, Sazili AQ
    Foods, 2021 Apr 16;10(4).
    PMID: 33923538 DOI: 10.3390/foods10040874
    Cold truck transportation is considered one of the most integral parts in a food processing chain. However, countless cases of product spoilage and food poisoning incidents have proven that temperature control during transport has been neglected. Literature on the impact of temperature during distribution is scarce. The objective of this study was to investigate the impact of various transportation temperatures and travel duration on the meat quality and microbial population of broiler chicken breast muscle. Sixty broiler chickens (42 days old) were slaughtered and eviscerated; they then had their breast muscles removed (each bird provided two breast muscle samples: left breast and right breast), which were wrapped in plastic film. All 120 packed boneless breasts (PBBs) were then placed at -18 °C for 24 h. After 24 h, the 60 PBB samples were subjected to transportation for 1 h at 4 °C (20 PBBs), 10 °C (20 PBBs), and 15 °C (20 PBBs) while the remaining 60 samples were transported for 5 h at 4 °C (20 PBBs), 10 °C (20 PBBs), and 15 °C (20 PBBs) before analyses. The samples transported at higher temperatures exhibited higher populations of coliform and Salmonella than those transported at lower temperatures. A significant impact of the transportation duration on the Salmonella population was only observed in samples transported at 4 °C for 5 h. However, a significant impact of transportation temperature on color was only recorded for the redness (a*) values, where the samples transported at higher temperatures exhibited higher redness (a*) values. Significant increases in lightness (L*) and yellowness (b*) values as well as decreases in redness (a*) and pH values were recorded in samples subjected to longer durations of transportation across all the temperatures observed in this study.
  19. Raja MAG, Katas H, Amjad MW
    Asian J Pharm Sci, 2019 Sep;14(5):497-510.
    PMID: 32104477 DOI: 10.1016/j.ajps.2018.12.005
    Upon the discovery of RNA interference (RNAi), canonical small interfering RNA (siRNA) has been recognized to trigger sequence-specific gene silencing. Despite the benefits of siRNAs as potential new drugs, there are obstacles still to be overcome, including off-target effects and immune stimulation. More recently, Dicer substrate siRNA (DsiRNA) has been introduced as an alternative to siRNA. Similarly, it also is proving to be potent and target-specific, while rendering less immune stimulation. DsiRNA is 25-30 nucleotides in length, and is further cleaved and processed by the Dicer enzyme. As with siRNA, it is crucial to design and develop a stable, safe, and efficient system for the delivery of DsiRNA into the cytoplasm of targeted cells. Several polymeric nanoparticle systems have been well established to load DsiRNA for in vitro and in vivo delivery, thereby overcoming a major hurdle in the therapeutic uses of DsiRNA. The present review focuses on a comparison of siRNA and DsiRNA on the basis of their design, mechanism, in vitro and in vivo delivery, and therapeutics.
  20. Iqbal DM, Wong LS, Kong SY
    Materials (Basel), 2021 Apr 23;14(9).
    PMID: 33922871 DOI: 10.3390/ma14092175
    The rapid development of the construction sector has led to massive use of raw construction materials, which are at risk of exhaustion. The problem is aggravated by the high demand for cement as binding powder and the mass production of clay bricks for construction purposes. This scenario has led to high energy consumption and carbon emissions in their production. In this regard, bio-cementation is considered a green solution to building construction, because this technology is environmentally friendly and capable of reducing carbon emissions, thus slowing the global warming rate. Most of the previously published articles have focused on microbiologically induced calcium carbonate precipitation (MICP), with the mechanism of bio-cementation related to the occurrence of urea hydrolysis as a result of the urease enzymatic activity by the microbes that yielded ammonium and carbonate ions. These ions would then react with calcium ions under favorable conditions to precipitate calcium carbonate. MICP was investigated for crack repair and the surface treatment of various types of construction materials. Research on MICP for the production of binders in construction materials has become a recent trend in construction engineering. With the development of cutting edge MICP research, it is beneficial for this article to review the recent trend of MICP in construction engineering, so that a comprehensive understanding on microbial utilization for bio-cementation can be achieved.
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links