Browse publications by year: 2020

  1. Ng ZC, Roslan RA, Lau WJ, Gürsoy M, Karaman M, Jullok N, et al.
    Polymers (Basel), 2020 Aug 21;12(9).
    PMID: 32825561 DOI: 10.3390/polym12091883
    The non-selective property of conventional polyurethane (PU) foam tends to lower its oil absorption efficiency. To address this issue, we modified the surface properties of PU foam using a rapid solvent-free surface functionalization approach based on the chemical vapor deposition (CVD) method to establish an extremely thin yet uniform coating layer to improve foam performance. The PU foam was respectively functionalized using different monomers, i.e., perfluorodecyl acrylate (PFDA), 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA), and hexamethyldisiloxane (HMDSO), and the effect of deposition times (1, 5 and 10 min) on the properties of foam was investigated. The results showed that all the modified foams demonstrated a much higher water contact angle (i.e., greater hydrophobicity) and greater absorption capacities compared to the control PU foam. This is due to the presence of specific functional groups, e.g., fluorine (F) and silane (Si) in the modified PU foams. Of all, the PU/PHFBAi foam exhibited the highest absorption capacities, recording 66.68, 58.15, 53.70, and 58.38 g/g for chloroform, acetone, cyclohexane, and edible oil, respectively. These values were 39.19-119.31% higher than that of control foam. The promising performance of the PU/PHFBAi foam is due to the improved surface hydrophobicity attributed to the original perfluoroalkyl moieties of the HFBA monomer. The PU/PHFBAi foam also demonstrated a much more stable absorption performance compared to the control foam when both samples were reused for up to 10 cycles. This clearly indicates the positive impact of the proposed functionalization method in improving PU properties for oil absorption processes.
    MeSH terms: Acetone; Acrylates; Chloroform; Cyclohexanes; Fluorine; Fluorocarbons; Polyurethanes; Silanes; Siloxanes; Surface Properties; Water; Hydrophobic and Hydrophilic Interactions
  2. Mohd Zubir MZ, Holloway S, Mohd Noor N
    PMID: 32825736 DOI: 10.3390/ijerph17176103
    BACKGROUND: It is estimated that 2% of the population in developing countries suffer from a chronic wound, making it a hidden phenomenon that is increasing as populations age. The ease of access to maggot therapy has made it increasingly attractive for implementation. This study aimed to explore the effectiveness of maggot therapy as compared to hydrogel dressings in the healing of chronic wounds.

    METHODS: An electronic literature search until October 2019 was performed using Medline, Embase, and Cumulative Index of Nursing and Allied Health Literature. The eligibility criteria were chronic wound patients with an intervention that involved a comparison of any maggot species with hydrogel dressings.

    RESULTS: The full text of five studies, involving 580 patients with chronic wounds, was retrieved. Four studies used the Lucilia sericata species. The maggot therapy facilitated faster and more effective debridement of non-viable tissue. It enabled faster development of granulation tissue and increased reduction in the wound surface area compared to hydrogel dressings. Maggot therapy had no effect on disinfection or complete healing rate for the wound.

    CONCLUSION: Maggot therapy should be considered for faster wound debridement, granulation tissue development, and wound surface area reduction as well as in surgical contraindications. This review can be used as a guide to assist clinicians in identifying patients who may benefit from maggot therapy.

    MeSH terms: Animals; Diptera*; Humans; Larva; Wound Healing*
  3. Asif MK, Ibrahim N, Sivarajan S, Heng Khiang Teh N, Chek Wey M
    Am J Orthod Dentofacial Orthop, 2020 Oct;158(4):579-586.e1.
    PMID: 32826123 DOI: 10.1016/j.ajodo.2019.09.022
    INTRODUCTION: The study aimed to investigate the effects of micro-osteoperforations (MOPs) on the mandibular bone volume/tissue volume (BV/TV) ratio changes and the rate of orthodontic tooth movement using cone-beam computed tomography images. Another objective was to evaluate the effects of MOP frequency intervals (4 weeks, 8 weeks, and 12 weeks) on the BV/TV ratio and rate of tooth movement.

    METHODS: In 24 participants, 140-200 g of force was applied for mandibular canine retraction. Three MOPs were made according to the scheduled intervals of the 3 different groups: group 1 (MOP 4 weeks), group 2 (MOP 8 weeks), and group 3 (MOP 12 weeks) directly at the mandibular buccal cortical bone of extracted first premolars sites. Cone-beam computed tomography scans were obtained at the 12th week after MOP application. Computed tomography Analyzer software (version 1.11.0.0; Skyscan, Kontich, Belgium) was used to compute the trabecular alveolar BV/TV ratio.

    RESULTS: A significant difference was observed in the rate of canine movement between control and MOP. Paired t test analysis showed a significant difference (P = 0.001) in the mean BV/TV ratio between control and MOP sides in all the frequency intervals groups. However, the difference was significant only in group 1 (P = 0.014). A strong negative correlation (r = -0.86) was observed between the rate of canine tooth movement and the BV/TV ratio at the MOP side for group 1 and all frequency intervals together (r = -0.42).

    CONCLUSIONS: The rate of orthodontic tooth movement can be accelerated by the MOP technique with frequently repeated MOPs throughout the treatment.

    MeSH terms: Bicuspid; Mandible/surgery; Tooth Movement*; Cone-Beam Computed Tomography
  4. Yang SL, Woon YL, Teoh CCO, Leong CT, Lim RBL
    PMID: 32826260 DOI: 10.1136/bmjspcare-2020-002283
    OBJECTIVES: To estimate past trends and future projection of adult palliative care needs in Malaysia.

    METHODS: This is a population-based secondary data analysis using the national mortality registry from 2004 to 2014. Past trend estimation was conducted using Murtagh's minimum and maximum methods and Gómez-Batiste's method. The estimated palliative care needs were stratified by age groups, gender and administrative states in Malaysia. With this, the projection of palliative care needs up to 2030 was conducted under the assumption that annual change remains constant.

    RESULTS: The palliative care needs in Malaysia followed an apparent upward trend over the years regardless of the estimation methods. Murtagh's minimum estimation method showed that palliative care needs grew 40% from 71 675 cases in 2004 to 100 034 cases in 2014. The proportion of palliative care needs in relation to deaths hovered at 71% in the observed years. In 2030, Malaysia should anticipate the population needs to be at least 239 713 cases (240% growth from 2014), with the highest needs among age group ≥80-year-old in both genders. Sarawak, Perak, Johor, Selangor and Kedah will become the top five Malaysian states with the highest number of needs in 2030.

    CONCLUSION: The need for palliative care in Malaysia will continue to rise and surpass its service provision. This trend demands a stepped-up provision from the national health system with advanced integration of palliative care services to narrow the gap between needs and supply.

    MeSH terms: Adult; Aged, 80 and over; Female; Forecasting; Humans; Malaysia; Male; Palliative Care; Population Growth; Registries; Hospice and Palliative Care Nursing
  5. Van Thuoc D, Loan TT, Trung TA, Van Quyen N, Tung QN, Tien PQ, et al.
    Mar Biotechnol (NY), 2020 Oct;22(5):651-660.
    PMID: 32827070 DOI: 10.1007/s10126-020-09986-z
    Salinivibrio proteolyticus M318, a halophilic bacterium isolated from fermented shrimp paste, is able to produce polyhydroxyalkanoate (PHA) from different carbon sources. In this study, we report the whole-genome sequence of strain M138, which comprises 2 separated chromosomes and 2 plasmids, and the complete genome contains 3,605,935 bp with an average GC content of 49.9%. The genome of strain M318 contains 3341 genes, 98 tRNA genes, and 28 rRNA genes. The 16S rRNA gene sequence and average nucleotide identity analysis associated with morphological and biochemical tests showed that this strain has high homology to the reference strain Salinivibrio proteolyticus DSM 8285. The genes encoding key enzymes for PHA and ectoine synthesis were identified from the bacterial genome. In addition, the TeaABC transporter responsible for ectoine uptake from the environment and the operon doeABXCD responsible for the degradation of ectoine were also detected. Strain M318 was able to produce poly(3-hydroxybutyrate) [P(3HB)] from different carbon sources such as glycerol, maltose, glucose, fructose, and starch. The ability to produce ectoines at different NaCl concentrations was investigated. High ectoine content of 26.2% of cell dry weight was obtained by this strain at 18% NaCl. This report provides genetic information regarding adaptive mechanisms of strain M318 to stress conditions, as well as new knowledge to facilitate the application of this strain as a bacterial cell factory for the production of PHA and ectoine.
    MeSH terms: Amino Acids, Diamino/biosynthesis*; Food Microbiology; Plasmids; Vibrionaceae/enzymology; Vibrionaceae/genetics; Vibrionaceae/metabolism*; Genome, Bacterial/genetics; Biosynthetic Pathways/genetics; Salinity; Polyhydroxyalkanoates/biosynthesis*
  6. Ong TK, Lim GS, Singh M, Fial AV
    J Endod, 2020 Dec;46(12):1856-1866.e2.
    PMID: 32827507 DOI: 10.1016/j.joen.2020.08.016
    INTRODUCTION: The purposes of this review were to appraise the level of evidence of the existing regenerative endodontic therapy (RET) publications, perform a meta-analysis on the survival and healing rates of necrotic immature permanent teeth treated with RET, and run a meta-analysis on the quantitative assessment of the root development of those teeth.

    METHODS: Electronic searches were performed in Web of Science, PubMed, CINAHL (Cumulative Index to Nursing and Allied Health Literature), and Cochrane Library databases. Two authors independently screened the titles and abstracts for eligibility. The analyses were performed on the clinical outcomes (ie, survival, healing, and root development) of the procedure.

    RESULTS: Eleven articles were included in the qualitative and quantitative syntheses. Three studies were randomized controlled trials, 6 were prospective cohort studies, and 2 were retrospective cohort studies. The pooled survival and healing rates were 97.3% and 93.0%, respectively. The pooled rates of root lengthening, root thickening, and apical closure were 77.3%, 90.6%, and 79.1%, respectively. However, if 20% radiographic changes were used as a cutoff point, there were only 16.1% root lengthening and 39.8% root thickening.

    CONCLUSIONS: Within the limitations of the present study, it can be concluded that RET yielded high survival and healing rates with a good root development rate. However, clinical meaningful root development after RET was unpredictable.

    MeSH terms: Humans; Prospective Studies; Retrospective Studies; Root Canal Therapy; Dentition, Permanent
  7. Rashid SS, Liu YQ, Zhang C
    Sci Total Environ, 2020 Dec 20;749:141465.
    PMID: 32827824 DOI: 10.1016/j.scitotenv.2020.141465
    Although nutrient removal and recovery from municipal wastewater are desirable to protect phosphorus resource and water-bodies from eutrophication, it is unclear how much environmental and economic benefits and burdens it might cause. This study evaluated the environmental and economic life cycle performance of three different upgraded Processes A, B and C with commercially available technologies for nutrient removal and phosphorus recovery based on an existing Malaysian wastewater treatment plant with a sequencing batch reactor technology and diluted municipal wastewater. It is found that the integration of nutrient removal, phosphorus recovery and electricity generation in all upgraded processes reduced eutrophication potential by 62-76%, and global warming potential by 7-22%, which, however, were gained at the cost of increases in human toxicity, acidification, abiotic depletion (fossil fuel) and freshwater ecotoxicity potentials by an average of 23%. New technologies for nutrient removal and phosphorus recovery are thus needed to achieve holistic rather than some environmental benefits at the expense of others. In addition, the study on two different functional units (FU), i.e. per m3 treated wastewater and per kg struvite recovered, shows that FU affected environmental assessment results, but the upgraded Process C had the least overall environmental burden with either of FUs, suggesting the necessity to use different functional units when comparing and selecting different technologies with two functions such as wastewater treatment and struvite production to confirm the best process configuration. The total life cycle costs of Processes A, B and C were 10.7%, 29.8% and 28.1%, respectively, higher than the existing process due to increased capital and operating costs. Therefore, a trade-off between environmental benefits and cost has to be balanced for technology selection or new integrated technologies have to be developed to achieve environmentally sustainable wastewater treatment economically.
    MeSH terms: Cost-Benefit Analysis; Electricity; Eutrophication; Fossil Fuels; Fresh Water; Humans; Hydrogen-Ion Concentration; Phosphorus; Global Warming; Waste Water; Struvite
  8. Carta MG, Scano A, Lindert J, Bonanno S, Rinaldi L, Fais S, et al.
    Eur Rev Med Pharmacol Sci, 2020 08;24(15):8226-8231.
    PMID: 32767354 DOI: 10.26355/eurrev_202008_22512
    OBJECTIVE: To explore whether the climate has played a role in the COVID-19 outbreak, we compared virus lethality in countries closer to the Equator with others. Lethality in European territories and in territories of some nations with a non-temperate climate was also compared.

    MATERIALS AND METHODS: Lethality was calculated as the rate of deaths in a determinate moment from the outbreak of the pandemic out of the total of identified positives for COVID-19 in a given area/nation, based on the COVID-John Hopkins University website. Lethality of countries located within the 5th parallels North/South on 6 April and 6 May 2020, was compared with that of all the other countries. Lethality in the European areas of The Netherlands, France and the United Kingdom was also compared to the territories of the same nations in areas with a non-temperate climate.

    RESULTS: A lower lethality rate of COVID-19 was found in Equatorial countries both on April 6 (OR=0.72 CI 95% 0.66-0.80) and on May 6 (OR=0.48, CI 95% 0.47-0.51), with a strengthening over time of the protective effect. A trend of higher risk in European vs. non-temperate areas was found on April 6, but a clear difference was evident one month later: France (OR=0.13, CI 95% 0.10-0.18), The Netherlands (OR=0.5, CI 95% 0.3-0.9) and the UK (OR=0.2, CI 95% 0.01-0.51). This result does not seem to be totally related to the differences in age distribution of different sites.

    CONCLUSIONS: The study does not seem to exclude that the lethality of COVID-19 may be climate sensitive. Future studies will have to confirm these clues, due to potential confounding factors, such as pollution, population age, and exposure to malaria.

    MeSH terms: Brunei/epidemiology; Burundi/epidemiology; Climate*; Congo/epidemiology; Ecuador/epidemiology; Europe; France/epidemiology; Gabon/epidemiology; Great Britain/epidemiology; Humans; Indian Ocean Islands/epidemiology; Indonesia/epidemiology; Kenya/epidemiology; Malaysia/epidemiology; Melanesia/epidemiology; Micronesia/epidemiology; Netherlands/epidemiology; Papua New Guinea/epidemiology; Pneumonia, Viral/mortality*; Pneumonia, Viral/epidemiology; Rwanda/epidemiology; Seasons*; Seychelles/epidemiology; Singapore/epidemiology; Somalia/epidemiology; Tropical Climate; Uganda/epidemiology; Weather*; Equatorial Guinea/epidemiology; Coronavirus Infections/mortality*; Coronavirus Infections/epidemiology; Samoa/epidemiology; Timor-Leste/epidemiology; Pandemics
  9. Yong HY, Mohd Shariff Z, Appannah G, Rejali Z, Mohd Yusof BN, Bindels J, et al.
    Public Health Nutr, 2020 Dec;23(18):3304-3314.
    PMID: 32814606 DOI: 10.1017/S1368980020002372
    OBJECTIVE: To examine the gestational weight gain (GWG) trajectory and its possible association with pregnancy outcomes.

    DESIGN: GWG trajectories were identified using the latent class growth model. Binary logistic regression was performed to examine the associations between adverse pregnancy outcomes and these trajectories.

    SETTING: Negeri Sembilan, Malaysia.

    PARTICIPANTS: Two thousand one hundred ninety-three pregnant women.

    RESULTS: Three GWG trajectories were identified: 'Group 1 - slow initial GWG but followed by drastic GWG', 'Group 2 - maintaining rate of GWG at 0·58 kg/week' and 'Group 3 - maintaining rate of GWG at 0·38 kg/week'. Group 1 had higher risk of postpartum weight retention (PWR) (adjusted OR (AOR) 1·02, 95 % CI 1·01, 1·04), caesarean delivery (AOR 1·03, 95 % CI 1·01, 1·04) and having low birth weight (AOR 1·04, 95 % CI 1·02, 1·05) compared with group 3. Group 2 was at higher risk of PWR (AOR 1·18, 95 % CI 1·16, 1·21), preterm delivery (AOR 1·03, 95 % CI 1·01, 1·05) and caesarean delivery (AOR 1·02, 95 % CI 1·01, 1·03), but at lower risk of having small-for-gestational-age infants (AOR 0·97, 95 % CI 0·96, 0·99) compared with group 3. The significant associations between group 1 and PWR were observed among non-overweight/obese women; between group 1 and caesarean delivery among overweight/obese women; group 2 with preterm delivery and caesarean delivery were only found among overweight/obese women.

    CONCLUSIONS: Higher GWG as well as increasing GWG trajectories was associated with higher risk of adverse pregnancy outcomes. Promoting GWG within the recommended range should be emphasised in antenatal care to prevent the risk of adverse pregnancy outcomes.

    MeSH terms: Adult; Cesarean Section/statistics & numerical data; Female; Humans; Infant, Low Birth Weight; Infant, Small for Gestational Age; Malaysia/epidemiology; Obesity/epidemiology; Pregnancy; Pregnancy Complications/epidemiology*; Pregnancy Outcome/epidemiology; Prenatal Care; Retrospective Studies; Risk Factors; Weight Gain; Logistic Models; Premature Birth/epidemiology; Overweight/epidemiology
  10. Al-Baldawi IA, Abdullah SRS, Almansoory AF, Ismail N', Hasan HA, Anuar N
    Sci Rep, 2020 08 19;10(1):13980.
    PMID: 32814793 DOI: 10.1038/s41598-020-70740-5
    In the present study, the potential of Salvinia molesta for biodecolorization of methyl orange (MO) dye from water was examined. Six glass vessels were filled with 4 L of water contaminated with MO with three concentrations (5, 15, and 25 mg/L), three with plants and another three without plant as contaminant control. The influence of operational parameters, including initial dye concentration, pH, temperature, and plant growth, on the efficacy of the biodecolorization process by S. molesta was determined. Temperature and pH was in the range of 25-26 °C and 6.3 to 7.3, respectively. Phytotransformation was monitored after 10 days through Fourier transform infrared (FTIR) spectroscopy, and a significant variation in the peak positions was demonstrated when compared to the control plant spectrum, indicating the adsorption of MO. The highest biodecolorization was 42% in a 5 mg/L MO dye concentration at pH 7.3 and at 27 °C. According to the FTIR results, a potential method for the biodecolourization of MO dye by S. molesta was proven. Salvinia molesta can be successfully used for upcoming eco-friendly phytoremediation purposes for dye removal.
  11. Costello C, Cao L, Gelcich S, Cisneros-Mata MÁ, Free CM, Froehlich HE, et al.
    Nature, 2020 12;588(7836):95-100.
    PMID: 32814903 DOI: 10.1038/s41586-020-2616-y
    Global food demand is rising, and serious questions remain about whether supply can increase sustainably1. Land-based expansion is possible but may exacerbate climate change and biodiversity loss, and compromise the delivery of other ecosystem services2-6. As food from the sea represents only 17% of the current production of edible meat, we ask how much food we can expect the ocean to sustainably produce by 2050. Here we examine the main food-producing sectors in the ocean-wild fisheries, finfish mariculture and bivalve mariculture-to estimate 'sustainable supply curves' that account for ecological, economic, regulatory and technological constraints. We overlay these supply curves with demand scenarios to estimate future seafood production. We find that under our estimated demand shifts and supply scenarios (which account for policy reform and technology improvements), edible food from the sea could increase by 21-44 million tonnes by 2050, a 36-74% increase compared to current yields. This represents 12-25% of the estimated increase in all meat needed to feed 9.8 billion people by 2050. Increases in all three sectors are likely, but are most pronounced for mariculture. Whether these production potentials are realized sustainably will depend on factors such as policy reforms, technological innovation and the extent of future shifts in demand.
    MeSH terms: Animals; Fisheries; Fishes; Meat; Oceans and Seas; Ecosystem; Biodiversity; Bivalvia; Climate Change; Inventions
  12. Min J, Son T, Hong JS, Cheah PS, Wegemann A, Murlidharan K, et al.
    Adv Biosyst, 2020 12;4(12):e2000003.
    PMID: 32815321 DOI: 10.1002/adbi.202000003
    Extracellular vesicles (EVs)-nanoscale phospholipid vesicles secreted by cells-present new opportunities for molecular diagnosis from non-invasive liquid biopsies. Single EV protein analysis can be extremely valuable in studying EVs as circulating cancer biomarkers, but it is technically challenging due to weak detection signals associated with limited amounts of epitopes and small surface areas for antibody labeling. Here, a new, simple method that enables multiplexed analyses of EV markers with improved sensitivities is reported. Specifically, plasmon-enhanced fluorescence detection is implemented that amplifies fluorescence signals using surface plasmon resonances excited by periodic gold nanohole structures. It is shown that fluorescence signals in multiple channels are amplified by one order of magnitude, and both transmembrane and intravesicular markers can be detected at the single EV level. This approach can offer additional insight into understanding subtypes, heterogeneity, and production dynamics of EVs during disease development and progression.
    MeSH terms: Humans; Neoplasms/blood; Neoplasms/diagnosis; Spectrometry, Fluorescence; Surface Plasmon Resonance/methods*; Cell Line, Tumor; MCF-7 Cells
  13. Shirbhate E, Patel P, Patel VK, Veerasamy R, Sharma PC, Rajak H
    Future Oncol, 2020 Oct;16(30):2457-2469.
    PMID: 32815411 DOI: 10.2217/fon-2020-0385
    HDAC inhibitors (HDACi) play an essential role in various cellular processes, such as differentiation and transcriptional regulation of key genes and cytostatic factors, cell cycle arrest and apoptosis that facilitates the targeting of epigenome of eukaryotic cells. In the majority of cancers, only a handful of patients receive optimal benefit from chemotherapeutics. Additionally, there is emerging interest in the use of HDACi to modulate the effects of ionizing radiations. The use of HDACi with radiotherapy, with the goal of reaching dissimilar, often distinct pathways or multiple biological targets, with the expectation of synergistic effects, reduced toxicity and diminished intrinsic and acquired resistance, conveys an approach of increasing interest. In this review, the clinical potential of HDACi in combination with radiotherapy is described as an efficient synergy for cancer treatment will be overviewed.
    MeSH terms: Animals; Antineoplastic Agents/administration & dosage; Antineoplastic Agents/adverse effects; Antineoplastic Agents/therapeutic use*; Disease Susceptibility; Humans; Neoplasms/diagnosis; Neoplasms/etiology; Neoplasms/mortality; Neoplasms/therapy*; Radiation Tolerance; Radiation-Sensitizing Agents/administration & dosage; Radiation-Sensitizing Agents/therapeutic use; Treatment Outcome; Radiotherapy, Adjuvant; Disease Management; Histone Deacetylase Inhibitors/administration & dosage; Histone Deacetylase Inhibitors/adverse effects; Histone Deacetylase Inhibitors/therapeutic use*; Chemoradiotherapy
  14. Odedra A, Webb L, Marquart L, Britton LJ, Chalon S, Moehrle JJ, et al.
    Am J Trop Med Hyg, 2020 11;103(5):1910-1917.
    PMID: 32815508 DOI: 10.4269/ajtmh.20-0491
    Liver transaminase elevations after treatment in malaria volunteer infection studies (VISs) have raised safety concerns. We investigated transaminase elevations from two human Plasmodium vivax VISs where subjects were treated with chloroquine (n = 24) or artefenomel (n = 8) and compared them with studies in Thailand (n = 41) and Malaysia (n = 76). In the VISs, alanine transaminase (ALT) increased to ≥ 2.5 × upper limit of normal (ULN) in 11/32 (34%) volunteers, peaking 5-8 days post-treatment. Transaminase elevations were asymptomatic, were not associated with elevated bilirubin, and resolved by day 42. The risk of an ALT ≥ 2.5 × ULN increased more than 4-fold (odds ratio [OR] 4.28; 95% CI: 1.26-14.59; P = 0.02) for every log10 increase in the parasite clearance burden (PCB), defined as the log-fold reduction in parasitemia 24 hours post-treatment. Although an elevated ALT ≥ 2.5 × ULN was more common after artefenomel than after chloroquine (5/8 [63%] versus 6/24 [25%]; OR 5.0; 95% CI: 0.91-27.47; P = 0.06), this risk disappeared when corrected for PCB. Peak ALT also correlated with peak C-reactive protein (R = 0.44; P = 0.012). Elevations in ALT (≥ 2.5 × ULN) were less common in malaria-endemic settings, occurring in 1/41 (2.5%) Thai patients treated with artefenomel, and in none of 76 Malaysians treated with chloroquine or artemisinin combination therapy. Post-treatment transaminase elevations are common in experimental P. vivax infection but do not appear to impact on participant safety. Although the mechanism of these changes remains uncertain, host inflammatory response to parasite clearance may be contributory.
    MeSH terms: Adamantane/analogs & derivatives*; Adamantane/therapeutic use; Adult; Alanine Transaminase/blood*; Antimalarials/therapeutic use*; Chloroquine/therapeutic use; Female; Humans; Liver Diseases/blood; Liver Diseases/drug therapy*; Liver Diseases/parasitology; Liver Function Tests; Malaysia; Male; Peroxides/therapeutic use*; Plasmodium vivax/isolation & purification*; Thailand; Cohort Studies; Malaria, Vivax/blood; Malaria, Vivax/drug therapy*; Malaria, Vivax/parasitology; Parasitemia/drug therapy; Artemisinins/therapeutic use; Young Adult
  15. Mehboob H, Tarlochan F, Mehboob A, Chang SH, Ramesh S, Harun WSW, et al.
    J Mater Sci Mater Med, 2020 Aug 20;31(9):78.
    PMID: 32816091 DOI: 10.1007/s10856-020-06420-7
    The current study is proposing a design envelope for porous Ti-6Al-4V alloy femoral stems to survive under fatigue loads. Numerical computational analysis of these stems with a body-centered-cube (BCC) structure is conducted in ABAQUS. Femoral stems without shell and with various outer dense shell thicknesses (0.5, 1.0, 1.5, and 2 mm) and inner cores (porosities of 90, 77, 63, 47, 30, and 18%) are analyzed. A design space (envelope) is derived by using stem stiffnesses close to that of the femur bone, maximum fatigue stresses of 0.3σys in the porous part, and endurance limits of the dense part of the stems. The Soderberg approach is successfully employed to compute the factor of safety Nf > 1.1. Fully porous stems without dense shells are concluded to fail under fatigue load. It is thus safe to use the porous stems with a shell thickness of 1.5 and 2 mm for all porosities (18-90%), 1 mm shell with 18 and 30% porosities, and 0.5 mm shell with 18% porosity. The reduction in stress shielding was achieved by 28%. Porous stems incorporated BCC structures with dense shells and beads were successfully printed.
    MeSH terms: Alloys/chemistry*; Biocompatible Materials/chemistry; Body Weight; Bone and Bones/pathology; Computer Simulation; Femur/pathology*; Humans; Materials Testing; Models, Theoretical*; Pressure; Prosthesis Design; Research Design; Stress, Mechanical; Titanium/chemistry*; Reproducibility of Results; Porosity*; Compressive Strength; Finite Element Analysis; Elastic Modulus; Printing, Three-Dimensional*
  16. Kow CS, Hasan SS
    Clin Drug Investig, 2020 10;40(10):989-990.
    PMID: 32816219 DOI: 10.1007/s40261-020-00961-z
    MeSH terms: Anti-Infective Agents*; Humans; Pneumonia, Viral*; Azithromycin*; Pandemics*
  17. Taib NA, Rahmat K
    Adv Exp Med Biol, 2020;1252:43-51.
    PMID: 32816261 DOI: 10.1007/978-3-030-41596-9_6
    Benign cystic or solid lumps frequently occur in the breasts of young women, and consequently can also be seen during pregnancy and lactation. Simple cysts do not increase the risk of malignancy. The current management is routine follow-up. Complex cysts are thick walled or contain a mass, and should be followed by a US-guided biopsy and then treated similar to any non-gravid, non-lactating patient.Galactoceles can be detected during the last trimester of pregnancy and during or after stopping lactation. Aspiration can be done to confirm the content. Co-existence of galactocele and malignancy is extremely rare, and the key is to follow up until it resolves.Fibroadenoma is the most frequent lesion found during pregnancy and lactation. Management is usually conservative after triple assessment. Surgery is usually not recommended in pregnant and lactating women unless rapid increase in size occurs or there is discordance in the triple assessment.Lactating adenomas are sometimes interpreted as a variant of fibroadenoma . They can naturally disappear at the end of pregnancy or lactation. Management is usually conservative, and an excisional biopsy is only mandated if it is rapidly enlarging or if there is discordance in the triple assessment.Gestational gigantomastia is a rare condition consisting of diffuse severe hypertrophy of both breasts during pregnancy . Mastectomy and reconstruction may rarely be required in such cases.
    MeSH terms: Breast; Breast Diseases*; Female; Humans; Lactation*; Mastectomy; Pregnancy; Pregnancy Complications*; Fibroadenoma; Breast Cyst
  18. Gupta G, Singh Y, Tiwari J, Raizaday A, Alharbi KS, Al-Abbasi FA, et al.
    Dermatol Ther, 2020 11;33(6):e14209.
    PMID: 32816372 DOI: 10.1111/dth.14209
    Psoriasis is a chronic, local as well as a systemic, inflammatory skin condition. Psoriasis influences the quality of life up to 3.8% of the population and occurs often between 15 and 30 years of age. Specific causes are linked to psoriasis, including the interleukin IL-23/IL-17 Axis, human antigen leucocyte (HLA), and tumor necrosis factor-α (TNF-α). Secukinumab is a monoclonal antibody that specifically binds and neutralizes IL-17A required in the treatment of Psoriasis. The signaling pathways of Wnt govern multiple functions of cell-like fate specification, proliferation, polarity, migration, differentiation with their signaling controlled rigorously, given that dysregulation caused by various stimuli, can lead to alterations in cell proliferation, apoptosis, and human inflammatory disease. Current data has supported non-canonical Wnt signaling pathways in psoriasis development, particularly Wnt5a activated signaling cascades. These interconnected factors are significant in interactions between immune cells, keratinocytes, and inflammatory factors due to a higher degree of transglutaminase 2, mediated by activation of the keratinocyte hyperproliferation of the psoriatic patient's epidermis. This study discusses the pathology of Wnt5a signaling and its involvement in the epidermal inflammatory effects of psoriasis with other related pathways.
    MeSH terms: Humans; Transglutaminases; Quality of Life; Skin; Keratinocytes; GTP-Binding Proteins; beta Catenin*
  19. Bhandari P, Subramaniam S, Bourke MJ, Alkandari A, Chiu PWY, Brown JF, et al.
    Gut, 2020 11;69(11):1915-1924.
    PMID: 32816921 DOI: 10.1136/gutjnl-2020-322329
    The COVID-19 pandemic has had a profound impact on provision of endoscopy services globally as staff and real estate were repurposed. As we begin to recover from the pandemic, a cohesive international approach is needed, and guidance on how to resume endoscopy services safely to avoid unintended harm from diagnostic delays. The aim of these guidelines is to provide consensus recommendations that clinicians can use to facilitate the swift and safe resumption of endoscopy services. An evidence-based literature review was carried out on the various strategies used globally to manage endoscopy during the COVID-19 pandemic and control infection. A modified Delphi process involving international endoscopy experts was used to agree on the consensus statements. A threshold of 80% agreement was used to establish consensus for each statement. 27 of 30 statements achieved consensus after two rounds of voting by 34 experts. The statements were categorised as pre-endoscopy, during endoscopy and postendoscopy addressing relevant areas of practice, such as screening, personal protective equipment, appropriate environments for endoscopy and infection control precautions, particularly in areas of high disease prevalence. Recommendations for testing of patients and for healthcare workers, appropriate locations of donning and doffing areas and social distancing measures before endoscopy are unique and not dealt with by any other guidelines. This international consensus using a modified Delphi method to produce a series of best practice recommendations to aid the safe resumption of endoscopy services globally in the era of COVID-19.
    MeSH terms: Cross Infection/prevention & control*; Delphi Technique; Female; Follow-Up Studies; Humans; Male; Pneumonia, Viral/epidemiology; Pneumonia, Viral/prevention & control*; Time Factors; United States; Incidence; Endoscopy, Digestive System/methods; Endoscopy, Digestive System/statistics & numerical data*; Occupational Health*; Practice Guidelines as Topic*; Coronavirus Infections/epidemiology; Coronavirus Infections/prevention & control*; Risk Assessment; Consensus; Internationality; Pandemics/prevention & control*; Pandemics/statistics & numerical data; Patient Safety
  20. Wan Makhtar WR, Mohd Azlan M, Hassan NH, Aziah I, Samsurizal NH, Yusof NY
    Microbiol Resour Announc, 2020 Aug 13;9(33).
    PMID: 32817162 DOI: 10.1128/MRA.01497-19
    We describe here the draft genome sequence and basic characteristics of Escherichia coli isolate INF13/18/A, which was isolated from Universiti Sains Malaysia (USM) Hospital. This isolate was identified as an extended-spectrum β-lactamase-producing Escherichia coli strain harboring the antimicrobial resistance genes TEM, CTX-M-1, and CTX-M-9.
    MeSH terms: Anti-Bacterial Agents; Base Sequence; beta-Lactamases; Escherichia coli; Escherichia coli Infections; Malaysia; Drug Resistance, Bacterial; Escherichia coli Proteins
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