Browse publications by year: 2018

  1. Ikhwan Sani Mohamad, Sivabalan Nadarajan, Azim Idris, Hairol Othman, Affirul Chairil, Razman Jarmin
    MyJurnal
    Leiomyosarcoma of the Inferior Vena Cava (IVC) is a rare soft tissue tumour which accounts for only 0.5% of all soft tissue sarcomas. The patients usually presented with non specific clinical signs and often diagnosed at advanced stage. We reported a case of a 58-year-old lady who presented with right sided abdominal pain for 6 months. CT scan showed large Level 2 IVC tumour which encased the right renal vein and had no clear plane of demarcation with the caudate lobe of the liver. She underwent radical resection of the IVC tumour with the right kidney removed en bloc. Vascular reconstruction was not performed as established collateral veins present. She was nursed in Intensive Care Unit for 2 days and discharged well at day 5 post operatively. Histopathological examination results revealed leiomyosarcoma of IVC.
    MeSH terms: Female; Humans; Intensive Care Units; Leiomyosarcoma; Liver; Renal Veins; Sarcoma; Soft Tissue Neoplasms; Tomography, X-Ray Computed; Veins; Vena Cava, Inferior; Abdominal Pain
  2. Mohd Nor Khadijah, Michelle Manuel Anura, Chew Man Fong, Gan Chin Seng, Tsiao Yi Yap, Loong Siow Ping, et al.
    MyJurnal
    Yolk Sac tumour (YST) of the nasal cavity is extremely rare with only less than five previously reported cases in the English literature. Due to its rarity, the diagnosis is not one that is considered at initial presentation until tissue biopsies are sent for histopathological examination. Serum α-fetoprotein levels aid in diagnosis and in monitoring progression of the tumour. Being a very uncommon tumour of germ cell origin presenting as localized disease in the nasal cavity, prognosis and survival rates are difficult to determine. We are reporting a rare yolk sac tumour case in an infant and the challenges encountered in its management.
  3. Chindo Ibrahim Bisallah, Lekhraj Rampal, Sherina Mohd Sidik, Zubairu Iliyasu, Munn-Sann Lye, Michael Ochigbo Onyilo
    MyJurnal
    Introduction: Tuberculosis is the commonest cause of death among HIV patients in Nigeria. Though tuberculosis is common among HIV patients, their knowledge about transmission and prevention is poor. Objective: To determine knowledge, attitude and preventive practices regarding tuberculosis and its predictors among HIV patients receiving treatment. Methods: A cross sectional study was carried out involving 226 randomly selected HIV patients receiving care at General Hospital, Minna. Study duration was from June 2015 to July 2017. Data on socio-demographic characteristics, psychosocial factors, knowledge, attitude and preventive practices regarding tuberculosis was collected using a self-administered, WHO modified, pretested and validated questionnaires. Data collected was analysed using SPSS version 22. Results: Out of 226 respondents, 60(26.5%) had poor knowledge, 123(54.4%) had negative attitude and 48(21.2%) had poor preventive practices regarding tuberculosis. The predictors of knowledge were age (B=0.087, 95%CI=0.031, 0.143, p=0.002), depression (B=-0.444, 95%CI=-0.673,-0.214, p
    MeSH terms: Cause of Death; Cross-Sectional Studies; Depression; Depressive Disorder; Family Characteristics; Hospitals, General; Humans; Health Knowledge, Attitudes, Practice; Nigeria; Surveys and Questionnaires; Tuberculosis; World Health Organization; HIV Infections
  4. Latiffah Abdul Latiff, Mehrnoosh Akhtari-Zavare, Ali Jafarzadeh Esfehani, Azrin Shah Abu Bakar, Chin Yit Siew, Hamidin Awang, et al.
    MyJurnal
    Introduction: Secure attachment to parents prevents adolescents from externalizing behaviours especially in developing countries. The aim of this study was to identify the contributors to parental attachment in a developing society. Methodology: This cross sectional study was performed on urban secondary students (aged between 13 and 17 years) based on multistage sampling in Pasir Gudang District, Johor, Malaysia. The depression, anxiety and stress (DASS-21) and Inventory of parent and peer attachment (IPPA) questionnaires were used along with a questionnaire for demographic information. Analysis of covariance (ANCOVA) was used to identify the main effect of study parameters on IPPA scores for father and mother. Results: A total of 2980 students (46.9% male and 53.1% female) participated in this study. Mean and SD for age was 14.39±1.28. Depression score and school form had a significant main effect on both paternal and maternal attachment (p
  5. Hamed Sharifat, Aida Abdul Rashid, Subapriya Suppiah
    MyJurnal
    Introduction: Internet addiction disorder (IAD) particularly the internet gaming disorder (IGD) is recognized as a type of addiction similar to substance abuse. This addiction carries similar social impact as the latter, as it can cause serious impairment of interpersonal relationship, and even deterioration of academic or occupational performances. Functional magnetic resonance imaging (fMRI) is able to act as a non-invasive objective biomarker to detect functional neuronal connectivity in areas of the brain affected by IAD by utilizing blood oxygenation level dependent (BOLD) imaging. Methods: A systematic review was conducted from original articles published from January 2014 to January 2017 that had the keywords “internet addiction” and fMRI. Results: Initial data collection had 170 articles, however after applying the inclusion and exclusion criteria, there were 34 articles in the final analysis (17 resting-state fMRI studies and 18 task-based fMRI studies). The striatal nucleus and dopaminergic system demonstrated impaired functioning in subjects with IAD. Conclusion: Task-based and resting-state fMRI are able to detect areas of the brain that are activated in subjects with internet addiction, similar to those observed in subjects with substance abuse and other addictions. This review also introduces a newly arising subtype which is smartphone addiction disorder.
  6. Meor Fairuz Rizal Meor Anuar Shuhaili, Intan Nureslyna Samsudin, Chew Boon How, Hejar Abdul Rahman, Johnson Stanslas, Shariful Hasan, et al.
    MyJurnal
    Introduction: Statins have several pleiotropic effects including its primary effect of lipid lowering that is important to prevent cardiovascular disease (CVD). Subjects often have heterogeneous responses to statin. This study aims to determine the biochemical effects of statins on lipid parameters among newly diagnosed dyslipidaemia subjects.
    Methods: This was a prospective observational study involving 118 newly diagnosed adults with dyslipidaemia from three government health clinics in Selangor, Malaysia. Biochemical analyses including fasting lipid profile [triglyceride (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C)] and apolipoproteins (apoA1, apoB) were taken at baseline and follow-up after a month on statin.
    Results: Majority of subjects (61.9%) were prescribed with lovastatin, with the rest on simvastatin. At baseline, the median values for all lipid profile parameters (TC, LDL-C, HDL-C) and non-conventional lipid parameters (LDL-C:HDL-C ratio, non-HDL-C, TC:HDL-C ratio, apoB:apoA1 ratio) were deranged except for TG and apoA1. On follow up, all parameters showed median values within the reference range except for HDL-C, non-HDL-C and TC:HDL-C ratio. There was significant difference in the effect of statins on lipid parameters including predictors of cardiovascular risk, simvastatin having better effects.
    Conclusions: Different statins have varying effects on lipid parameters. Simvastatin showed significantly better effects compared to lovastatin. Non-HDL value should be included in the standard lipid profile report given its ease of use and implementation as it’s both a marker of coronary artery disease (CAD) risk stratification as well as an established determinant of goal attainment during therapy.
    MeSH terms: Ambulatory Care Facilities; Humans; Hyperlipidemias*; Malaysia; Cohort Studies; Hydroxymethylglutaryl-CoA Reductase Inhibitors*
  7. Nurul Mursyidah Zakaria, Nur Asyiqin Jasman Farok, Siti Khadijah Adam, Syafinaz Amin Nordin
    MyJurnal
    Introduction: Challenge arises for medical undergraduates as the subject of medicine is intricate and extensive. Although students come from the same pool of excellent academic background, the medical undergraduates are still prone to failure in exams, resulting in them repeating the year of study or even having the thought of changing to other courses. In order to cope with the programme, students may adopt learning approaches that would help them to go through the programme. Therefore, it would be interesting to explore the learning approaches of medical students in Universiti Putra Malaysia. Methods: The purposes of this study were to determine the learning approach of medical undergraduates of Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (FMHS, UPM) together with its associated factors, which were socio-demographic characteristics and learning environment. This research was a cross-sectional study where the sample size calculated was 554. Self-administered questionnaires were given to the respondents chosen by simple random sampling. The socio-demographic characteristics were analysed using descriptive statistics such as frequency and percentage. Chi-square test was used to analyse the association between the variables. Results: The response rate was 83% (460 respondents agreed to participate). The majority of the respondents were females (73.7%), Malay (67%), and in their clinical years of study (58.7%). Overall, most students preferred deep approach (DA) of learning (49.6%), followed by strategic approach (29.1%) and surface apathetic approach (21.3%) of learning. There were statistically significant associations between learning approach and gender (p=0.005), as well as between learning approach and year of study (p=0.037). Conclusion: Our study showed an association between learning approaches and year of study and gender. DA of learning was the preferred learning approach in medical students at FMHS, UPM. This approach of learning, where students learn to understand the subject matter, may result in students become effective learners. Their understanding about the subject matter will be applicable to their clinical practice in the future.
    MeSH terms: Cross-Sectional Studies; Demography; Faculty; Female; Learning; Malaysia; Surveys and Questionnaires; Students, Medical; Chi-Square Distribution; Sample Size; Comprehension
  8. Shariat A, Cleland JA, Danaee M, Alizadeh R, Sangelaji B, Kargarfard M, et al.
    Work, 2018;60(4):549-554.
    PMID: 30103362 DOI: 10.3233/WOR-182762
    BACKGROUND: There are many potential training exercises for office workers in an attempt to prevent musculoskeletal disorders. However, to date a suitable tool to monitor the perceived exertion of those exercises does not exist.

    OBJECTIVE: The primary objective of this study was to examine the validity and reliability of the Borg CR-10 scale to monitor the perceived exertion of office exercise training.

    METHODS: The study involved 105 staff members employed in a government office with an age range from 25 to 50 years. The Borg CR-10 scale was self-administered two times, with an interval of two weeks in order to evaluate the accuracy of the original findings with a retest. Face validity and content validity were also examined.

    RESULTS: Reliability was found to be high for the Borg CR-10 scale (0.898). Additionally a high correlation between the Borg CR-10 scale and Visual Analog Scale (VAS) was identified (rs = 0.754, P 

    MeSH terms: Adult; Exercise Test/methods; Female; Heart Rate/physiology; Humans; Male; Middle Aged; Office Management; Oxygen Consumption/physiology; Perception; Psychometrics/instrumentation; Psychometrics/methods; Psychometrics/standards*; Surveys and Questionnaires; Reproducibility of Results; Exercise/psychology*
  9. Yap BK, M Soair SN, Talik NA, Lim WF, Mei I L
    Sensors (Basel), 2018 Aug 10;18(8).
    PMID: 30103424 DOI: 10.3390/s18082625
    Over the past 20 years, rapid technological advancement in the field of microfluidics has produced a wide array of microfluidic point-of-care (POC) diagnostic devices for the healthcare industry. However, potential microfluidic applications in the field of nutrition, specifically to diagnose iron deficiency anemia (IDA) detection, remain scarce. Iron deficiency anemia is the most common form of anemia, which affects billions of people globally, especially the elderly, women, and children. This review comprehensively analyzes the current diagnosis technologies that address anemia-related IDA-POC microfluidic devices in the future. This review briefly highlights various microfluidics devices that have the potential to detect IDA and discusses some commercially available devices for blood plasma separation mechanisms. Reagent deposition and integration into microfluidic devices are also explored. Finally, we discuss the challenges of insights into potential portable microfluidic systems, especially for remote IDA detection.
    MeSH terms: Humans; Anemia, Iron-Deficiency/diagnosis*; Point-of-Care Systems*; Microfluidics*; Lab-On-A-Chip Devices*
  10. Yun SI, Song BH, Frank JC, Julander JG, Olsen AL, Polejaeva IA, et al.
    Viruses, 2018 08 11;10(8).
    PMID: 30103523 DOI: 10.3390/v10080422
    Zika virus (ZIKV) causes no-to-mild symptoms or severe neurological disorders. To investigate the importance of viral and host genetic variations in determining ZIKV infection outcomes, we created three full-length infectious cDNA clones as bacterial artificial chromosomes for each of three spatiotemporally distinct and genetically divergent ZIKVs: MR-766 (Uganda, 1947), P6-740 (Malaysia, 1966), and PRVABC-59 (Puerto Rico, 2015). Using the three molecularly cloned ZIKVs, together with 13 ZIKV region-specific polyclonal antibodies covering nearly the entire viral protein-coding region, we made three conceptual advances: (i) We created a comprehensive genome-wide portrait of ZIKV gene products and their related species, with several previously undescribed gene products identified in the case of all three molecularly cloned ZIKVs. (ii) We found that ZIKV has a broad cell tropism in vitro, being capable of establishing productive infection in 16 of 17 animal cell lines from 12 different species, although its growth kinetics varied depending on both the specific virus strain and host cell line. More importantly, we identified one ZIKV-non-susceptible bovine cell line that has a block in viral entry but fully supports the subsequent post-entry steps. (iii) We showed that in mice, the three molecularly cloned ZIKVs differ in their neuropathogenicity, depending on the particular combination of viral and host genetic backgrounds, as well as in the presence or absence of type I/II interferon signaling. Overall, our findings demonstrate the impact of viral and host genetic variations on the replication kinetics and neuropathogenicity of ZIKV and provide multiple avenues for developing and testing medical countermeasures against ZIKV.
    MeSH terms: Zika Virus Infection/genetics*; Zika Virus Infection/virology; Zika Virus/genetics*; Zika Virus/physiology; Animals; Cell Line; Cercopithecus aethiops; Cloning, Molecular; Female; Humans; Male; Mice, Inbred C57BL; Genetic Variation*; Vero Cells; Virus Replication; Gene Expression; Viral Load; Genomics; Mice; Virus Internalization; Host-Pathogen Interactions/genetics*; Reverse Genetics
  11. Chan CY, Mohamed N, Ima-Nirwana S, Chin KY
    PMID: 30103534 DOI: 10.3390/ijerph15081727
    Osteoporosis is a major public health problem affecting millions of people worldwide. Increasing knowledge, correcting health belief and promoting osteoprotective practices are effective measures for building and maintaining strong bone throughout ones' life-span. This review aims to summarize the contemporary evidence on the knowledge, beliefs and practice of adolescents and young adults on bone health. We performed literature searches using the PubMed and Scopus databases to identify original studies from 2008 to May 2018 using the search terms "(knowledge OR beliefs OR attitude OR practice OR behaviours OR physical activity OR exercise OR diet OR nutrition) AND (young OR youth OR adolescents OR children OR young adults OR students OR teenager) AND (osteoporosis OR bone health)". Of the 3206 articles found, 34 met the inclusion criteria. Studies showed that most adolescents and young adults had poor knowledge and expressed disinterest in osteoporosis. They believed that other diseases were more serious than osteoporosis, contributing to low perceived susceptibility and seriousness towards this disease. Popular media emerged as a platform to obtain information regarding osteoporosis. The lack of knowledge and misconceptions about osteoporosis led to poor osteoprotective practices. As a conclusion, the current evidence revealed a lack of awareness about osteoporosis among adolescents and young adults. Educational interventions may be useful to improve the awareness of osteoporosis among this population.
    MeSH terms: Adolescent; Adult; Child; Diet; Humans; Nutritional Status; Osteoporosis; Public Health; Students; PubMed; Young Adult
  12. Fadzil NF, Wagiran A, Mohd Salleh F, Abdullah S, Mohd Izham NH
    Genes (Basel), 2018 Aug 12;9(8).
    PMID: 30103564 DOI: 10.3390/genes9080408
    The present study demonstrated High Resolution Melting (HRM) analysis combined with DNA barcode (Bar-HRM) as a fast and highly sensitive technique for detecting adulterants in Eurycoma longifolia commercial herbal products. Targeting the DNA barcoding of the chloroplastic region-ribulose biphosphate carboxylase large chain (rbcL) and the nuclear ribosomal region- internal transcribed spacer 2 (ITS2), PCR amplification and HRM analysis using saturated Eva green dye as the source of fluorescence signals, was accomplished by employing a real-time cycler. The results were further validated by sequencing to identify unknown sequence from Genbank database and to generate phylogenetic tree using neighbour joint (NJ) analysis. Both of the DNA markers exhibited a distinguishable melting temperature and shape of the normalised curve between the reference and the adulterants. In the case of species identification, ITS2 was more successful in differentiating between species. Additionally, detection of admixture sample containing small traces of targeted E. longifolia DNA (w/v) can be detected as low as 5% for rbcL and less than 1% for ITS2, proving the sensitivity and versatility of the HRM analysis. In conclusion, the Bar-HRM analysis is a fast and reliable technique that can effectively detect adulterants in herbal products. Therefore, this will be beneficial for regulatory agencies in order to regulate food safety issues.
    MeSH terms: Chloroplasts; DNA; Fluorescence; Genetic Markers; Phylogeny; Ribulose-Bisphosphate Carboxylase; Temperature; Polymerase Chain Reaction; Databases, Nucleic Acid; Eurycoma; DNA Barcoding, Taxonomic; Food Safety
  13. Shahul Hamid F, Bhatti MS, Anuar N, Anuar N, Mohan P, Periathamby A
    Waste Manag Res, 2018 Oct;36(10):873-897.
    PMID: 30103651 DOI: 10.1177/0734242X18785730
    The widespread occurrence of microplastic has invaded the environment to an extent that it appears to be present throughout the globe. This review investigated the global abundance and distribution of microplastics in marine and freshwater ecosystems. Furthermore, the issues and challenges have been addressed for better findings in microplastics studies. Findings revealed that the accumulation of microplastics varies geographically, with locations, hydrodynamic conditions, environmental pressure, and time. From this review, it is crucial that proper regulations are proposed and implemented in order to reduce the occurrence of microplastics in the aquatic environment. Without appropriate law and regulations, microplastic pollution will eventually threaten human livelihood.
    MeSH terms: Environmental Monitoring; Environmental Pollution; Humans; Plastics*; Water Pollutants, Chemical*; Ecosystem
  14. Wayah SB, Philip K
    Microb Cell Fact, 2018 Aug 13;17(1):125.
    PMID: 30103750 DOI: 10.1186/s12934-018-0972-1
    BACKGROUND: Emergence of antibiotic resistance and growing consumer trend towards foods containing biopreservatives stimulated the search for alternative antimicrobials. This research is aimed at characterizing, investigating the mechanism of action, scale up optimization and evaluating the biopreservative potential of a bacteriocin from Lactobacillus fermentum.

    RESULTS: Fermencin SA715 is a novel, broad-spectrum, non-pore-forming and cell wall-associated bacteriocin isolated from L. fermentum GA715 of goat milk origin. A combination of hydrophobic interaction chromatography, solid-phase extraction and reversed-phase HPLC was necessary for purification of the bacteriocin to homogeneity. It has a molecular weight of 1792.537 Da as revealed by MALDI-TOF mass spectrometry. Fermencin SA715 is potent at micromolar concentration, possesses high thermal and pH stability and inactivated by proteolytic enzymes thereby revealing its proteinaceous nature. Biomass accumulation and production of fermencin SA715 was optimum in a newly synthesized growth medium. Fermencin SA715 did not occur in the absence of manganese(II) sulphate. Tween 80, ascorbic acid, sodium citrate and magnesium sulphate enhanced the production of fermencin SA715. Sucrose is the preferred carbon source for growth and bacteriocin production. Sodium chloride concentration higher than 1% suppressed growth and production of fermencin SA715. Optimum bacteriocin production occurred at 37 °C and pH 6-7. Scale up of fermencin SA715 production involved batch fermentation in a bioreactor at a constant pH of 6.5 which resulted in enhanced production. Fermencin SA715 doubled the shelf life and improved the microbiological safety of fresh banana. Bacteriocin application followed by refrigeration tripled the shell life of banana.

    CONCLUSIONS: This study reveals the huge potential of fermencin SA715 as a future biopreservative for bananas and reveals other interesting characteristics which can be exploited in the preservation of other foods. Furthermore insights on the factors influencing the production of fermencin SA715 have been revealed and optimized condition for its production has been established facilitating future commercial production.

    MeSH terms: Animals; Fermentation; Goats; Milk; Lactobacillus fermentum/metabolism*
  15. Akhtari-Zavare M, Mohd-Sidik S, Periasamy U, Rampal L, Fadhilah SI, Mahmud R
    Health Qual Life Outcomes, 2018 Aug 13;16(1):163.
    PMID: 30103759 DOI: 10.1186/s12955-018-0989-5
    BACKGROUND: Cancer is a serious public health problem not only in Malaysia, also worldwide. The aim of this study was to determine the determinants of quality of life (QOL) among cancer patients in Peninsular Malaysia.

    METHODS: A cross sectional study was conducted among 2120 cancer patients in Peninsular Malaysia, between April 2016 to January 2017. All cancer patients aged 18 years old and above, Malaysian citizens and undergoing cancer treatment at government hospitals were approached to participate in this study and requested to complete a set of validated questionnaires. Inferential statistical tests such as t-test and one-way ANOVA were used to determine the differences between demographic variables, physical effects, clinical factors, psychological effects and self-esteem with the quality of life of cancer patients. Predictor(s) of quality of life were determined by using Multivariate linear regression models.

    RESULT: A total 1620 out of 2120 cancer patients participated in this study, giving a response rate of 92%. The majority of cancer patients were female 922 (56.9%), Malays 1031 (63.6%), Muslim 1031 (63.6%), received chemotherapy treatment 1483 (91.5%). Overall, 1138 (70.2%) of the patients had depression and 1500 (92.6%) had anxiety. Statistically significant associations were found between QOL and clinical factors, physical side effects of cancer, psychological effects and self-esteem (p 

    MeSH terms: Adult; Aged; Cross-Sectional Studies; Female; Humans; Malaysia; Male; Middle Aged; Neoplasms/psychology*; Neoplasms/therapy*; Quality of Life/psychology*; Surveys and Questionnaires; Socioeconomic Factors; Multivariate Analysis
  16. Aziz HA, Puat NNA, Alazaiza MYD, Hung YT
    PMID: 30104522 DOI: 10.3390/ijerph15081734
    In this study, a sequential batch reactor (SBR) with different types of fibers was employed for the treatment of poultry slaughterhouse wastewater. Three types of fibers, namely, juite fiber (JF), bio-fringe fiber (BF), and siliconised conjugated polyester fiber (SCPF), were used. Four SBR experiments were conducted, using the fibers in different reactors, while the fourth reactor used a combination of these fibers. The treatment efficiency of the different reactors with and without fibers on biochemical oxygen demand (BOD), chemical oxygen demand (COD), ammonia-nitrogen (NH₃-N), phosphorus (P), nitrite (NO₂), nitrate (NO₃), total suspended solids (TSS), and oil-grease were evaluated. The removal efficiency for the reactors with fibers was higher than that of the reactor without fibers for all pollutants. The treated effluent had 40 mg/L BOD₅ and 45 mg/L COD with an average removal efficiency of 96% and 93%, respectively, which meet the discharge limits stated in the Environmental Quality Act in Malaysia.
    MeSH terms: Abattoirs; Ammonia; Animals; Environmental Pollutants; Humans; Malaysia; Nitrates; Nitrites; Nitrogen Dioxide; Oxygen; Patient Discharge; Phosphorus; Polyesters; Poultry; Silicon; Biological Oxygen Demand Analysis; Waste Water
  17. Zaini MN, Patel SA, Syafruddin SE, Rodrigues P, Vanharanta S
    Sci Rep, 2018 08 13;8(1):12063.
    PMID: 30104738 DOI: 10.1038/s41598-018-30499-2
    Tissue-specific transcriptional programs control most biological phenotypes, including disease states such as cancer. However, the molecular details underlying transcriptional specificity is largely unknown, hindering the development of therapeutic approaches. Here, we describe novel experimental reporter systems that allow interrogation of the endogenous expression of HIF2A, a critical driver of renal oncogenesis. Using a focused CRISPR-Cas9 library targeting chromatin regulators, we provide evidence that these reporter systems are compatible with high-throughput screening. Our data also suggests redundancy in the control of cancer type-specific transcriptional traits. Reporter systems such as those described here could facilitate large-scale mechanistic dissection of transcriptional programmes underlying cancer phenotypes, thus paving the way for novel therapeutic approaches.
    MeSH terms: Carcinoma, Renal Cell/genetics; Feasibility Studies; Genetic Testing/methods*; Humans; Kidney Neoplasms/genetics; Transcription, Genetic; Gene Expression Regulation, Neoplastic/genetics; Genes, Reporter/genetics*; Gene Expression Profiling/methods*; Cell Line, Tumor; Basic Helix-Loop-Helix Transcription Factors/genetics*; Gene Regulatory Networks/genetics; Gene Knock-In Techniques; High-Throughput Screening Assays/methods*; HEK293 Cells; Carcinogenesis/genetics; CRISPR-Cas Systems/genetics
  18. Johnson DJ, Needham J, Xu C, Massoud EC, Davies SJ, Anderson-Teixeira KJ, et al.
    Nat Ecol Evol, 2018 09;2(9):1436-1442.
    PMID: 30104751 DOI: 10.1038/s41559-018-0626-z
    Survival rates of large trees determine forest biomass dynamics. Survival rates of small trees have been linked to mechanisms that maintain biodiversity across tropical forests. How species survival rates change with size offers insight into the links between biodiversity and ecosystem function across tropical forests. We tested patterns of size-dependent tree survival across the tropics using data from 1,781 species and over 2 million individuals to assess whether tropical forests can be characterized by size-dependent life-history survival strategies. We found that species were classifiable into four 'survival modes' that explain life-history variation that shapes carbon cycling and the relative abundance within forests. Frequently collected functional traits, such as wood density, leaf mass per area and seed mass, were not generally predictive of the survival modes of species. Mean annual temperature and cumulative water deficit predicted the proportion of biomass of survival modes, indicating important links between evolutionary strategies, climate and carbon cycling. The application of survival modes in demographic simulations predicted biomass change across forest sites. Our results reveal globally identifiable size-dependent survival strategies that differ across diverse systems in a consistent way. The abundance of survival modes and interaction with climate ultimately determine forest structure, carbon storage in biomass and future forest trajectories.
    MeSH terms: Carbon; Seeds; Temperature; Trees*; Tropical Climate*; Water; Plant Leaves; Biomass
  19. Shahruzaman SH, Fakurazi S, Maniam S
    Cancer Manag Res, 2018;10:2325-2335.
    PMID: 30104901 DOI: 10.2147/CMAR.S167424
    Adaptive metabolic responses toward a low oxygen environment are essential to maintain rapid proliferation and are relevant for tumorigenesis. Reprogramming of core metabolism in tumors confers a selective growth advantage such as the ability to evade apoptosis and/or enhance cell proliferation and promotes tumor growth and progression. One of the mechanisms that contributes to tumor growth is the impairment of cancer cell metabolism. In this review, we outline the small-molecule inhibitors identified over the past decade in targeting cancer cell metabolism and the usage of some of these molecules in clinical trials.
    MeSH terms: Cell Transformation, Neoplastic; Neoplasms; Oxygen; Apoptosis; Cell Proliferation; Carcinogenesis
  20. Fazalda A, Quraisiah A, Nur Azlina MF
    PMID: 30105063 DOI: 10.1155/2018/7515692
    Background: Peptic ulcer is a basic term for ulcers on the lower oesophagus, stomach, or jejunum. The specific term for ulcer in the stomach is gastric ulcer. The extensive use of honey around the globe helps researchers to study the usefulness of honey. Many studies had already been conducted and proved the effectiveness of honey in treating gastric ulcer.

    Methods: A systematic review of the literature was conducted to identify relevant studies on honey used as an alternative treatment of gastric ulcer cause by NSAIDs. A comprehensive search was conducted in Medline, SCOPUS, and Ebscohost. The main criteria used were articles published in English and using NSAIDs-induced gastric ulcer in rat's model and those reporting the effectiveness of honey.

    Results: Articles published between 2001 and 2014 were identified to be relevant in studies related to the inclusion criteria. The literature search found 30 potential and closely related articles in this review, but only 5 articles were taken which meet the criteria needed to be fulfilled.

    Conclusions: All studies in this review reported the efficacy of honey for gastric ulcer based on its antioxidant and cytoprotective activities. Most of the studies conducted used different types of honey at various doses on rats. Future studies should be conducted to identify the appropriate dose for humans to achieve similar gastroprotective effects.

    MeSH terms: Animals; Anti-Inflammatory Agents, Non-Steroidal; Antioxidants; Esophagus; Honey; Humans; Jejunum; Peptic Ulcer; Stomach Ulcer; Ulcer; Upper Gastrointestinal Tract; Rats
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