Browse publications by year: 2018

  1. Lovisetti G, Vulcano E, Bettella L, Tasarib R, Tondolo T, Sala F
    J Knee Surg, 2018 May;31(5):459-466.
    PMID: 28719943 DOI: 10.1055/s-0037-1604139
    Surgical reconstruction of bicondylar tibial fractures with external fixation relies on indirect fracture reduction that could affect anatomical restoration. The aim of the present study is to evaluate the radiographic and clinical outcomes of tibial bicondylar fractures treated with circular external fixation. A total of 20 bicondylar fractures of the proximal tibia in 20 patients treated with circular external fixation were included in the study. Two fractures were open. Mean clinical and radiographic follow-up was 37.3 months after frame removal. Angular, translation, and length deformities were assessed on nonweight-bearing anteroposterior, lateral, and two 45 degrees oblique views. The medial proximal tibia (MPTA) and posterior proximal tibia angles (PPTA) were calculated in all cases. The condylar widening was calculated in relation to the width of the femoral condyles. Joint depressions or gaps of the articular surface were identified on the four views of the knee. The modified Hospital for Special Surgery (HSS) knee scoring system was used for clinical evaluation. The MPTA was good in 18 (90%) and fair in 2 patients (10%). The PPTA was good in 13 (65%), fair in 6 (30%), and poor in 1 patient (5%). The articular reduction was good in 12 (60%) and fair in 8 patients (40%). The condylar widening was good in 15 (75%) and fair in 5 patients (25%). Mechanical axis deviation was within the normal range in 11/12 patients (91.7%). All fractures consolidated. One deep infection was successfully treated with local debridement, the mean modified HSS knee score at the latest follow-up was 90.5 (range: 67-100). Articular reconstruction and tibia alignment based on radiographic evaluation in the present study, along with functional results compare favorably with those of external and internal fixation presented in the literature.
    MeSH terms: Adolescent; Adult; Aged; Aged, 80 and over; Female; Fracture Fixation/instrumentation*; Fracture Fixation/methods; Humans; Male; Middle Aged; Tibial Fractures/diagnosis*; Tibial Fractures/surgery*; Cohort Studies; Range of Motion, Articular; External Fixators*; Treatment Outcome; Recovery of Function; Young Adult
  2. Thu HE, Hussain Z, Mohamed IN, Shuid AN
    Curr Drug Targets, 2018;19(10):1109-1126.
    PMID: 28721818 DOI: 10.2174/1389450118666170718151913
    BACKGROUND: Eurycoma longifolia is a well-documented herbal medicine that has gained widespread recognition due to its versatile pharmacological activities including anticancer, antimalarial, antimicrobial, antioxidant, aphrodisiac, anti-inflammatory, anxiolytic, anti-diabetic, antirheumatism and anti-ulcer. Plethora of in vitro and in vivo studies evidenced their excellent antiproliferative and anticancer efficacy against various types of human cancers.

    OBJECTIVE: This review was aimed to critically analyze the therapeutic viability and anticancer efficacy of Eurycoma longifolia in the treatment of cancer and also to propose its molecular and translational mechanism of cytotoxicity against cancerous cells.

    RESULTS: Among a range of medicinally active compounds isolated from various parts (roots, stem, bark and leaves) of Eurycoma longifolia, 16 compounds have shown promising anti-proliferative and anticancer efficacies. Eurycomanone, one of the most active medicinal compounds of Eurycoma longifolia, displayed a strong dose-dependent anticancer efficacy against lung carcinoma (A-549 cells) and breast cancer (MCF-7 cells); however, showed moderate efficacy against gastric (MGC-803 cells) and intestinal carcinomas (HT-29 cells). The prime mode of cytotoxicity of Eurycoma longifolia and its medicinal compounds is the induction of apoptosis (programmed cell death) via the up-regulation of the expression of p53 (tumor suppressor protein) and pro-apoptotic protein (Bax) and downregulation of the expression of anti-apoptotic protein (Bcl-2). A remarkable alleviation in the mRNA expression of various cancer-associated biomarkers including heterogeneous nuclear ribonucleoprotein (hnRNP), prohibitin (PHB), annexin-1 (ANX1) and endoplasmic reticulum protein-28 (ERp28) has also been evidenced.

    CONCLUSION: Eurycoma longifolia and its medicinal constituents exhibit promising anticancer efficacy and thus can be considered as potential complementary therapy for the treatment of various types of human cancers.

    MeSH terms: Animals; Antineoplastic Agents, Phytogenic/isolation & purification; Antineoplastic Agents, Phytogenic/pharmacology*; Humans; Phytotherapy/methods*; Neoplasms/drug therapy*; Neoplasms/genetics; Neoplasms/metabolism; Neoplasms/pathology; Plant Extracts/isolation & purification; Plant Extracts/pharmacology*; Signal Transduction/drug effects; Tumor Suppressor Protein p53/metabolism*; Apoptosis/drug effects*; Xenograft Model Antitumor Assays; Eurycoma/chemistry*; Cell Line, Tumor; Apoptosis Regulatory Proteins/genetics; Apoptosis Regulatory Proteins/metabolism
  3. Voon YL, Wong PF, Khoo ASB
    Mini Rev Med Chem, 2018;18(2):173-183.
    PMID: 28714398 DOI: 10.2174/1389557517666170717125821
    Nasopharyngeal carcinoma (NPC) is a form of head and neck cancer of multifactorial etiologies that is highly prevalent among men in the population of Southern China and Southeast Asia. NPC has claimed many thousands of lives worldwide; but the low awareness of NPC remains a hindrance in early diagnosis and prevention of the disease. NPC is highly responsive to radiotherapy and chemotherapy, but radiocurable NPC is still dependent on concurrent treatment of megavoltage radiotherapy with chemotherapy. Despite a significant reduction in loco-regional and distant metastases, radiotherapy alone has failed to provide a significant improvement in the overall survival rate of NPC, compared to chemotherapy. In addition, chemo-resistance persists as the major challenge in the management of metastatic NPC although the survival rate of advanced metastatic NPC has significantly improved with the administration of chemotherapy adjunctive to radiotherapy. In this regard, targeted molecular therapy could be explored for the discovery of alternative NPC therapies. Nutlin-3, a small molecule inhibitor that specifically targets p53-Mdm2 interaction offers new therapeutic opportunities by enhancing cancer cell growth arrest and apoptosis through the restoration of the p53-mediated tumor suppression pathway while producing minimal cytotoxicity and side effects. This review discusses the potential use of Nutlin-3 as a p53-activating drug and the future directions of its clinical research for NPC treatment.
    MeSH terms: Animals; Antineoplastic Agents/pharmacology*; Antineoplastic Agents/therapeutic use; Antineoplastic Agents/chemistry; Carcinoma/drug therapy*; Humans; Imidazoles/pharmacology*; Imidazoles/chemistry; Nasopharyngeal Neoplasms/drug therapy*; Piperazines/pharmacology*; Piperazines/chemistry; Tumor Suppressor Protein p53/antagonists & inhibitors*; Tumor Suppressor Protein p53/metabolism; Proto-Oncogene Proteins c-mdm2/antagonists & inhibitors*; Proto-Oncogene Proteins c-mdm2/metabolism
  4. Jeon YH, Chien WT, Ha JY, Ibrahim R, Kirley B, Tan LL, et al.
    Aging Ment Health, 2018 10;22(10):1279-1286.
    PMID: 28714742 DOI: 10.1080/13607863.2017.1351521
    OBJECTIVES: An Asia-Pacific regional collaboration group conducted its first multi-country research project to determine whether or not European quality indicators (QIs) for psychosocial care in dementia could be implemented as a valid tool in residential aged care across seven Asia-Pacific sites (Australia, Hong Kong Special Administrative Region, Mainland China, Malaysia, Singapore, South Korea, and Thailand).

    METHOD: Following the European QI protocol, auditing and data extraction of medical records of consenting residents with dementia were conducted by trained auditors with relevant health care backgrounds. Detailed field notes by the auditors were also obtained to describe the characteristics of the participating care facilities, as well as key issues and challenges encountered, for each of the 12 QIs.

    RESULTS: Sixteen residential care facilities in the seven Asia-Pacific sites participated in this study. Data from 275 residents' records revealed each of the 12 Qis' endorsement varied widely within and between the study sites (0%-100%). Quality of the medical records, family and cultural differences, definitions and scoring of certain indicators, and time-consuming nature of the QI administration were main concerns for implementation.

    CONCLUSION: Several items in the European QIs in the current format were deemed problematic when used to measure the quality of psychosocial care in the residential aged care settings in participating Asia-Pacific countries. We propose refinements of the European QIs for the Asian-Pacific context, taking into account multiple factors identified in this study. Our findings provide crucial insights for future research and implementation of psychosocial dementia care QIs in this region.

    MeSH terms: Aged; Australia; China; Dementia/therapy*; Female; Homes for the Aged/standards*; Hong Kong; Humans; Long-Term Care/standards*; Malaysia; Male; Medical Audit; Nursing Homes/standards*; Pilot Projects; Psychotherapy/standards*; Singapore; Thailand; Quality Indicators, Health Care/standards*; Republic of Korea
  5. Zaw MT, Emran NA, Lin Z
    J Microbiol Immunol Infect, 2018 Apr;51(2):159-165.
    PMID: 28711439 DOI: 10.1016/j.jmii.2017.06.009
    BACKGROUND: In the fight against malaria caused by Plasmodium falciparum, the successes achieved by artemisinin were endangered by resistance of the parasites to the drug. Whole genome sequencing approach on artemisinin resistant parasite line discovered k13 gene associated with drug resistance. In vitro and in vivo studies indicated mutations in the k13 gene were linked to the artemisinin resistance.

    METHODOLOGY: The literatures published after April, 2015 up to December, 2016 on k13 mutant alleles for artemisinin resistance in Plasmodium falciparum and relevant literatures were comprehensively reviewed.

    RESULTS: To date, 13 non-synonymous mutations of k13 gene have been observed to have slow parasite clearance. Worldwide mapping of k13 mutant alleles have shown mutants associated with artemisinin resistance were confined to southeast Asia and China and did not invade to African countries. Although in vitro ring stage survival assay of 0-3 h was a recently developed assay, it was useful for rapid detection of artemisinin resistance associated k13 allelic marker in the parasite. Recently, dissemination of k13 mutant alleles was recommended to be investigated by identity of haplotypes. Significant characteristics of well described alleles in the reports were mentioned in this review for the benefit of future studies.

    CONCLUSION: According to the updates in the review, it can be concluded artemisinin resistance does not disseminate to India and African countries within short period whereas regular tracking of these mutants is necessary.

    MeSH terms: Africa/epidemiology; Alleles; Antimalarials/pharmacology*; Asia, Southeastern/epidemiology; Base Sequence; China/epidemiology; Drug Resistance/genetics*; Humans; India/epidemiology; Plasmodium falciparum/drug effects*; Plasmodium falciparum/genetics; Plasmodium falciparum/isolation & purification*; Protozoan Proteins/genetics*; Malaria, Falciparum/drug therapy*; Malaria, Falciparum/epidemiology*; Malaria, Falciparum/parasitology; Sequence Analysis, DNA; Genome, Protozoan/genetics; Polymorphism, Single Nucleotide/genetics; Artemisinins/pharmacology*
  6. Mumtaz W, Ali SSA, Yasin MAM, Malik AS
    Med Biol Eng Comput, 2018 Feb;56(2):233-246.
    PMID: 28702811 DOI: 10.1007/s11517-017-1685-z
    Major depressive disorder (MDD), a debilitating mental illness, could cause functional disabilities and could become a social problem. An accurate and early diagnosis for depression could become challenging. This paper proposed a machine learning framework involving EEG-derived synchronization likelihood (SL) features as input data for automatic diagnosis of MDD. It was hypothesized that EEG-based SL features could discriminate MDD patients and healthy controls with an acceptable accuracy better than measures such as interhemispheric coherence and mutual information. In this work, classification models such as support vector machine (SVM), logistic regression (LR) and Naïve Bayesian (NB) were employed to model relationship between the EEG features and the study groups (MDD patient and healthy controls) and ultimately achieved discrimination of study participants. The results indicated that the classification rates were better than chance. More specifically, the study resulted into SVM classification accuracy = 98%, sensitivity = 99.9%, specificity = 95% and f-measure = 0.97; LR classification accuracy = 91.7%, sensitivity = 86.66%, specificity = 96.6% and f-measure = 0.90; NB classification accuracy = 93.6%, sensitivity = 100%, specificity = 87.9% and f-measure = 0.95. In conclusion, SL could be a promising method for diagnosing depression. The findings could be generalized to develop a robust CAD-based tool that may help for clinical purposes.
  7. Ujah GA, Nna VU, Agah MI, Omue LO, Leku CB, Osim EE
    Andrologia, 2018 Mar;50(2).
    PMID: 28703286 DOI: 10.1111/and.12866
    Cadmium chloride (CdCl2 ) has been reported to cause reproductive toxicity in male rats, mainly through oxidative stress. This study examined its effect on sexual behaviour, as one of the mechanisms of reproductive dysfunction, as well as the possible ameliorative effect of quercetin (QE) on same. Thirty male Wistar rats (10 weeks old), weighing 270-300 g, were used for this study. They were either orally administered 2% DMSO, CdCl2 (5 mg/kg b.w.), QE (20 mg/kg b.w.) or CdCl2 +QE, once daily for 4 weeks, before sexual behavioural studies. The 5th group received CdCl2 for 4 weeks and allowed 4-week recovery period, before sexual behavioural test. Rats were sacrificed after sexual behavioural studies. The blood, testis and penis were collected for biochemical assays. Cadmium increased mount, intromission and ejaculatory latencies, but reduced their frequencies, compared to control. Serum nitric oxide increased, while penile cyclic guanosine monophosphate reduced in the CdCl2 -exposed rats, compared to control. CdCl2 increased testicular cholesterol, but reduced 3β-hydroxysteroid dehydrogenase (3β-HSD) and 17β-HSD activities, and testosterone concentration. QE better attenuated these negative changes compared to withdrawal of CdCl2 treatment. In conclusion, CdCl2 suppressed steroidogenesis, penile erection and sexual behaviour, with poor reversal following withdrawal, while QE attenuated these effects.
    MeSH terms: Animals; Antioxidants/pharmacology; Antioxidants/therapeutic use*; Disease Models, Animal; Humans; Male; Quercetin/pharmacology; Quercetin/therapeutic use*; Reproduction/drug effects; Sexual Behavior/drug effects; Sexual Behavior, Animal/drug effects; Sexual Dysfunction, Physiological/blood; Sexual Dysfunction, Physiological/chemically induced; Sexual Dysfunction, Physiological/drug therapy*; Testis/drug effects; Testis/metabolism*; Testosterone/blood; Testosterone/metabolism*; Rats, Wistar; Oxidative Stress/drug effects; Cadmium Chloride/toxicity*; Rats
  8. Muhamad Effendi F, Nam Y, Shin CH, Cho TJ, Yoo WJ, Cheon JE, et al.
    J Pediatr Orthop B, 2018 Sep;27(5):407-411.
    PMID: 28704300 DOI: 10.1097/BPB.0000000000000477
    Heterotopic ossification in soft tissue or muscle is rare in the pediatric and adolescent age group. Most cases are associated with musculoskeletal injury and trauma to the central nervous system. Here, we describe an adolescent patient without a history of trauma or lesions in the central nervous system who presented with a painful limp with limited motion of the left hip. Investigations indicated unusually large heterotopic ossification extending from the inner aspect of the ilium down to the anterior part of the hip, highly likely to have developed after an unrecognized periacetabular pyomyositis primarily involving the iliacus muscle. Surgical excision was performed successfully without perioperative complications. No recurrence was detected at the final follow-up.
    MeSH terms: Adolescent; Central Nervous System/pathology; Female; Hip Joint/surgery*; Humans; Ilium/physiopathology*; Ossification, Heterotopic/etiology*; Ossification, Heterotopic/psychology; Postoperative Complications/etiology*; Psychotic Disorders/complications; Recurrence; Range of Motion, Articular; Treatment Outcome; Muscle, Skeletal/physiopathology*; Pyomyositis/complications; Pyomyositis/diagnosis*
  9. Laurino MY, Leppig KA, Abad PJ, Cham B, Chu YWY, Kejriwal S, et al.
    J Genet Couns, 2018 02;27(1):21-32.
    PMID: 28699126 DOI: 10.1007/s10897-017-0115-6
    The Professional Society of Genetic Counselors in Asia (PSGCA) was recently established as a special interest group of the Asia Pacific Society of Human Genetics. Fostering partnerships across the globe, the PSGCA's vision is to be the lead organization that advances and mainstreams the genetic counseling profession in Asia and ensures individuals have access to genetic counseling services. Its mission is to promote quality genetic counseling services in the region by enhancing practice and curricular standards, research and continuing education. The PSGCA was formally launched during the Genetic Counseling Pre-Conference Workshop held at the 11th Asia-Pacific Conference on Human Genetics in Hanoi, Viet Nam, September 16, 2015. The pre-conference workshop provided an opportunity for medical geneticists and genetic counselors from across 10 Asia Pacific countries to learn about the varied genetic counseling practices and strategies for genetic counseling training. This paper provides an overview of the current status and challenges in these countries, and proposed course of unified actions for the future of the genetic counseling profession.
    MeSH terms: Asia; Education, Medical/trends*; Education, Professional/trends; Forecasting; Genetic Counseling/trends*; Humans; Practice Patterns, Physicians'/trends*; Societies, Medical; Counselors/trends*
  10. Tan KX, Danquah MK, Sidhu A, Lau SY, Ongkudon CM
    Biotechnol Prog, 2018 01;34(1):249-261.
    PMID: 28699244 DOI: 10.1002/btpr.2524
    Targeted delivery of drug molecules to specific cells in mammalian systems demonstrates a great potential to enhance the efficacy of current pharmaceutical therapies. Conventional strategies for pharmaceutical delivery are often associated with poor therapeutic indices and high systemic cytotoxicity, and this result in poor disease suppression, low surviving rates, and potential contraindication of drug formulation. The emergence of aptamers has elicited new research interests into enhanced targeted drug delivery due to their unique characteristics as targeting elements. Aptamers can be engineered to bind to their cognate cellular targets with high affinity and specificity, and this is important to navigate active drug molecules and deliver sufficient dosage to targeted malignant cells. However, the targeting performance of aptamers can be impacted by several factors including endonuclease-mediated degradation, rapid renal filtration, biochemical complexation, and cell membrane electrostatic repulsion. This has subsequently led to the development of smart aptamer-immobilized biopolymer systems as delivery vehicles for controlled and sustained drug release to specific cells at effective therapeutic dosage and minimal systemic cytotoxicity. This article reports the synthesis and in vitro characterization of a novel multi-layer co-polymeric targeted drug delivery system based on drug-loaded PLGA-Aptamer-PEI (DPAP) formulation with a stage-wise delivery mechanism. A thrombin-specific DNA aptamer was used to develop the DPAP system while Bovine Serum Albumin (BSA) was used as a biopharmaceutical drug in the synthesis process by ultrasonication. Biophysical characterization of the DPAP system showed a spherical shaped particulate formulation with a unimodal particle size distribution of average size ∼0.685 µm and a zeta potential of +0.82 mV. The DPAP formulation showed a high encapsulation efficiency of 89.4 ± 3.6%, a loading capacity of 17.89 ± 0.72 mg BSA protein/100 mg PLGA polymeric particles, low cytotoxicity and a controlled drug release characteristics in 43 days. The results demonstrate a great promise in the development of DPAP formulation for enhanced in vivo cell targeting. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 34:249-261, 2018.
    MeSH terms: Animals; Cell Movement/drug effects; Humans; Imines/therapeutic use; Imines/chemistry; Particle Size; Polyethylenes/therapeutic use; Polyethylenes/chemistry; Serum Albumin, Bovine/chemistry; Drug Delivery Systems*; Aptamers, Nucleotide/therapeutic use; Aptamers, Nucleotide/chemistry*; Nanoparticles/therapeutic use; Nanoparticles/chemistry*; Biophysical Phenomena*
  11. Gillani SW, Syed Sulaiman SA, Abdul MIM, Saad SY
    Curr Diabetes Rev, 2018;14(5):472-480.
    PMID: 28699483 DOI: 10.2174/1573399813666170710183736
    BACKGROUND: Disability is a key indicator implicating both overall morbidity and success of public health efforts to compress the period of morbidity among geriatrics for the overall population. Disabilities are more prevalent among diabetics than among those without diabetes.

    OBJECTIVE: This study aimed to determine self-monitoring practices, awareness to dietary modifications and barriers to medication adherence among physically disabled type 2 diabetes mellitus patients.

    METHODS: Interview sessions were conducted at diabetes clinic - Penang general hospital. The invited participants represented three major ethnic groups of Malaysia (Malay, Chinese & Indians). An openended approach was used to elicit answers from participants. Interview questions were related to participant's perception towards self-monitoring blood glucose practices, Awareness towards diet management, behaviour to diabetes medication and cues of action.

    RESULTS: A total of twenty-one diabetes patients between the ages 35 - 67 years with physical disability (P1-P21) were interviewed. The cohort of participants was dominated by Males (n=12) and also distribution pattern showed that majority of participants were Malay (n=10), followed by Chinese (n=7) and rest Indians (n=4). When the participants were asked in their opinion what was the preferred method of recording blood glucose tests, several participants from low socioeconomic status and either divorced or widowed denied to adapt telemontoring instead preferred to record manually. There were mixed responses about the barriers to control diet/calories. Even patients with high economic status, middle age 35-50 and diabetes history of 5-10 years were influenced towards alternative treatments.

    CONCLUSION: Study concluded that patients with physical disability required extensive care and effective strategies to control glucose metabolism.

    MeSH terms: Adolescent; Adult; Aged; Attitude to Computers; Blood Glucose/drug effects; Blood Glucose/metabolism; Diabetes Mellitus, Type 2/blood; Diabetes Mellitus, Type 2/ethnology; Diabetes Mellitus, Type 2/psychology; Diabetes Mellitus, Type 2/therapy*; Disability Evaluation; Feeding Behavior; Female; Disabled Persons/psychology*; Humans; Hypoglycemic Agents/therapeutic use*; Interviews as Topic; Male; Middle Aged; Perception*; Socioeconomic Factors; Telemetry; Biomarkers/blood; Qualitative Research; Asian Continental Ancestry Group/psychology; Young Adult; Patient Preference
  12. Yap SK, Zakaria Z, Othman SS, Omar AR
    J Vet Sci, 2018 Mar 31;19(2):207-215.
    PMID: 28693312 DOI: 10.4142/jvs.2018.19.2.207
    Pasteurella multocida serotype B:2 causes hemorrhagic septicemia in cattle and buffalo. The invasion mechanism of the bacterium when invading the bloodstream is unclear. This study aimed to characterize the effects of immunomodulatory molecules, namely dexamethasone and lipopolysaccharide, on the invasion efficiency of P. multocida serotype B:2 toward bovine aortic endothelial cells (BAECs) and the involvement of actin microfilaments in the invasion mechanism. The results imply that treatment of BAECs with lipopolysaccharide at 100 ng/mL for 24 h significantly increases the intracellular bacteria number per cell (p < 0.01) compared with those in untreated and dexamethasone-treated cells. The lipopolysaccharide-treated cells showed a significant decrease in F-actin expression and an increase in G-actin expression (p < 0.001), indicating actin depolymerization of BAECs. However, no significant differences were detected in the invasion efficiency and actin filament reorganization between the dexamethasone-treated and untreated cells. Transmission electron microscopy showed that P. multocida B:2 resided in a vacuolar compartment of dexamethasone-treated and untreated cells, whereas the bacteria resided in cellular membrane of lipopolysaccharide-treated cells. The results suggest that lipopolysaccharide destabilizes the actin filaments of BAECs, which could facilitate the invasion of P. multocida B:2 into BAECs.
    MeSH terms: Animals; Aorta/drug effects; Aorta/microbiology*; Cattle; Dexamethasone/pharmacology; Endothelium, Vascular/drug effects; Endothelium, Vascular/microbiology*; Immunologic Factors/pharmacology; Lipopolysaccharides/pharmacology*; Actin Cytoskeleton/drug effects; Actin Cytoskeleton/microbiology; Pasteurella multocida/drug effects; Pasteurella multocida/pathogenicity*; Microscopy, Electron, Transmission; In Vitro Techniques
  13. Yusof NZ, Azizul Hasan ZA, Abd Maurad Z, Idris Z
    Cutan Ocul Toxicol, 2018 Jun;37(2):103-111.
    PMID: 28693384 DOI: 10.1080/15569527.2017.1352595
    AIM: To evaluate eye irritation potential of palm-based methyl ester sulphonates (MES) of different chain lengths; C12, C14, C16, C16:18.

    METHODS: The Bovine Corneal Opacity and Permeability test method (BCOP), OECD Test Guideline 437, was used as an initial step to study the inducing effect of palm-based MES on irreversible eye damage. The second assessment involved the use of reconstructed human corneal-like epithelium test method, OECD Test Guideline 492 using SkinEthic™ Human Corneal Epithelium to study the potential effect of palm-based MES on eye irritancy. The palm-based MES were prepared in 10% solution (w/v) in deionized water and tested as a liquid and surfactant test substances whereby both test conducted according to the liquid/surfactant treatment protocol.

    RESULTS: The preliminary BCOP results showed that palm-based MES; C12, C14, C16, C16:18 were not classified as severe eye irritants test substances with in vitro irritancy score between 3 and the threshold level of 55. The second evaluation using SkinEthic™ HCE model showed that palm-based MES; C12, C14, C16, C16:18 and three commercial samples were potentially irritants to the eyes with mean tissue viability ≤ 60% and classified as Category 2 according to United Nations Globally Harmonized System of Classification and Labelling of Chemicals. However, there are some limitations of the proposed ocular irritation classification of palm-based MES due to insolubility of long chain MES in 10% solution (w/v) in deionized water.

    CONCLUSION: Therefore, future studies to clarify the eye irritation potential of the palm-based MES will be needed, and could include; methods to improve the test substance solubility, use of test protocol for solids, and/or inclusion of a benchmark anionic surfactant, such as sodium dodecyl sulphate within the study design.

    MeSH terms: Animals; Animal Testing Alternatives; Cattle; Cornea/drug effects*; Cornea/metabolism; Cornea/pathology; Corneal Opacity; Humans; Irritants/classification; Irritants/toxicity*; Permeability; Sulfonic Acids/classification; Sulfonic Acids/toxicity*; Surface-Active Agents/classification; Surface-Active Agents/toxicity*; In Vitro Techniques
  14. de Vries M, de Ruiter MA, Oostrom KJ, Schouten-Van Meeteren AYN, Maurice-Stam H, Oosterlaan J, et al.
    Child Neuropsychol, 2018 08;24(6):844-858.
    PMID: 28693404 DOI: 10.1080/09297049.2017.1350262
    Pediatric brain tumor survivors (PBTS) suffer from cognitive late effects, such as deteriorating executive functioning (EF). We explored the suitability of the Behavior Rating Inventory of Executive Function (BRIEF) to screen for these late effects. We assessed the relationship between the BRIEF and EF tasks, and between the BRIEF-Parent and BRIEF-Teacher, and we explored the clinical utility. Eighty-two PBTS (8-18 years) were assessed with EF tasks measuring attention, cognitive flexibility, inhibition, visual-, and working memory (WM), and with the BRIEF-Parent and BRIEF-Teacher. Pearson's correlations between the BRIEF and EF tasks, and between the BRIEF-Parent and BRIEF-Teacher were calculated. The BRIEF-Parent related poorly to EF tasks (rs < .26, ps > .01), but of the BRIEF-Teacher the WM-scale, Monitor-scale, Behavioral-Regulation-Index, and Meta-cognition-Index, and Total-score (rs > .31, ps < .01) related significantly to some EF tasks. When controlling for age, only the WM scale and Total score related significantly to the attention task (ps < .01). The inhibit scales of the BRIEF-Parent and BRIEF-Teacher correlated significantly (r = .33, p < .01). Children with clinically elevated scores on BRIEF scales that correlated with EF tasks performed worse on all EF tasks (ds 0.56-1.23, ps < .05). The BRIEF-Teacher Total and Index scores might better screen general EF in PBTS than the BRIEF-Parent. However, the BRIEF-Teacher is also not specific enough to capture separate EFs. Solely relying on the BRIEF as a screening measure of EFs in BPTS is insufficient. Questionnaires and tasks give distinctive, valuable information.
    MeSH terms: Adolescent; Attention Deficit Disorder with Hyperactivity/psychology; Brain Neoplasms/diagnosis*; Brain Neoplasms/mortality; Brain Neoplasms/pathology; Child; Cognition/physiology*; Female; Humans; Male; Neuropsychological Tests*; Survival Rate; Executive Function/physiology*
  15. Song SL, Yong HS, Eamsobhana P
    J Helminthol, 2018 Jul;92(4):524-529.
    PMID: 28693647 DOI: 10.1017/S0022149X1700061X
    Angiostrongylus mackerrasae is a parasitic nematode of rats found in Australia. When first reported, it was referred to as A. cantonensis. Recent molecular studies, including the mitochondrial genome, indicate that it is highly similar to A. cantonensis. These studies did not include A. malaysiensis, another member of the A. cantonensis species complex, for comparison. The present study examined the genetic distance and phylogenetic relationship between the component taxa (A. cantonensis, A. mackerrasae and A. malaysiensis) of the A. cantonensis species complex, based on the 12 protein-coding genes (PCGs) of their mitochondrial genome. Both the nucleotide and amino acid sequences were analysed. Angiostrongylus mackerrasae and A. cantonensis are members of the same genetic lineage and both are genetically distinct from A. malaysiensis. The genetic distance based on concatenated nucleotide sequences of 12 mt-PCGs between A. mackerrasae and A. cantonensis from Thailand is p = 1.73%, while that between the Thai and Chinese taxa of A. cantonensis is p = 3.52%; the genetic distance between A. mackerrasae and A. cantonensis from China is p = 3.70%. The results indicate that A. mackerrasae and A. cantonensis belong to the same genetic lineage, and that A. mackerrasae may be conspecific with A. cantonensis. It remains to be resolved whether A. mackerrasae is conspecific with A. cantonensis or undergoing incipient speciation.
    MeSH terms: Amino Acid Sequence; Angiostrongylus; Animals; Australia; Base Sequence; China; Nucleotides; Phylogeny; Thailand; Angiostrongylus cantonensis; Rats; Genome, Mitochondrial
  16. Phan CS, Kamada T, Kobayashi K, Hamada T, Vairappan CS
    Nat Prod Res, 2018 Jan;32(2):202-207.
    PMID: 28691521 DOI: 10.1080/14786419.2017.1346638
    A new xenicane diterpenoid, 15-deoxy-isoxeniolide-A (1) along with four known compounds 9-deoxy-isoxeniolide-A (2), isoxeniolide-A (3), xeniolide-A (4) and coraxeniolide-B (5) were isolated from the Bornean soft coral Xenia sp. The structures of these metabolites were elucidated on the basis of spectral analysis, NMR and HRESIMS. Compound 5 showed cytotoxic activity against ATL cell line, S1T.
    MeSH terms: Animals; Anti-Bacterial Agents/pharmacology*; Anti-Bacterial Agents/chemistry; Antineoplastic Agents/pharmacology*; Antineoplastic Agents/chemistry; Diterpenes/chemistry*; Drug Evaluation, Preclinical/methods; Drug Screening Assays, Antitumor/methods; Humans; Microbial Sensitivity Tests; Magnetic Resonance Spectroscopy; Molecular Structure; Leukemia, T-Cell/drug therapy; Anthozoa/metabolism; Anthozoa/chemistry*; Cell Line, Tumor
  17. Alden DL, Friend J, Lee PY, Lee YK, Trevena L, Ng CJ, et al.
    Med Decis Making, 2018 01;38(1):14-25.
    PMID: 28691551 DOI: 10.1177/0272989X17715628
    BACKGROUND: Research suggests that desired family involvement (FI) in medical decision making may depend on cultural values. Unfortunately, the field lacks cross-cultural studies that test this assumption. As a result, providers may be guided by incomplete information or cultural biases rather than patient preferences.

    METHODS: Researchers developed 6 culturally relevant disease scenarios varying from low to high medical seriousness. Quota samples of approximately 290 middle-aged urban residents in Australia, China, Malaysia, India, South Korea, Thailand, and the USA completed an online survey that examined desired levels of FI and identified individual difference predictors in each country. All reliability coefficients were acceptable. Regression models met standard assumptions.

    RESULTS: The strongest finding across all 7 countries was that those who desired higher self-involvement (SI) in medical decision making also wanted lower FI. On the other hand, respondents who valued relational-interdependence tended to want their families involved - a key finding in 5 of 7 countries. In addition, in 4 of 7 countries, respondents who valued social hierarchy desired higher FI. Other antecedents were less consistent.

    CONCLUSION: These results suggest that it is important for health providers to avoid East-West cultural stereotypes. There are meaningful numbers of patients in all 7 countries who want to be individually involved and those individuals tend to prefer lower FI. On the other hand, more interdependent patients are likely to want families involved in many of the countries studied. Thus, individual differences within culture appear to be important in predicting whether a patient desires FI. For this reason, avoiding culture-based assumptions about desired FI during medical decision making is central to providing more effective patient centered care.

    MeSH terms: Adult; Asia; Australia; Cross-Cultural Comparison*; Cultural Characteristics; Decision Making*; Family/psychology*; Family Relations*; Female; Humans; Health Knowledge, Attitudes, Practice; Male; Middle Aged; Patient Participation/psychology*; United States; Reproducibility of Results; Patient Preference
  18. Koh LL, O'Rourke S, Brennan M, Clooney L, Cafferkey M, McCallion N, et al.
    Ir J Med Sci, 2018 May;187(2):423-427.
    PMID: 28689228 DOI: 10.1007/s11845-017-1649-1
    BACKGROUND: Both Staphylococcus aureus and coagulase negative Staphylococci are common causes of late-onset neonatal sepsis in the neonatal intensive care unit (NICU), usually relating to intravascular access device infections.

    AIMS: This project aimed to review the impact on antimicrobial treatment and clinical outcome in the NICU setting, of the introduction of the Xpert MRSA/SA BC test (Cepheid, USA) for the identification of staphylococci in blood cultures.

    METHODS: A retrospective audit was carried out of the pre- and post-intervention periods; the intervention was the introduction of the Xpert MRSA/SA BC test.

    RESULTS: In total, 88 neonates had positive blood cultures with Staphylococcus spp., comprising 42 neonates in the pre-intervention and 46 in the post-intervention groups. The pre-intervention group had a higher birth weight (1.541 kg vs. 1.219 kg, p = 0.05) and higher platelet count (288 vs. 224 × 109/L, p = 0.05). There was a trend towards a shorter duration of antimicrobial therapy in term infants and in the length of admission; however, this was not statistically significant (p = 0.2). All of the nine infants post-intervention with significant bacteraemia (S. aureus =3, CoNS =6) were changed to the optimal antimicrobial at the time the result was available.

    CONCLUSIONS: This study shows that the introduction of the Xpert MRSA/SA BC test can lead to a reduction in the length of admission and duration of antimicrobials in term infants; however, the difference was not statistically significant. All nine infants with clinically significant bacteraemia were treated with the appropriate antimicrobial when the Xpert MRSA/SA BC test result was available.

    MeSH terms: Anti-Bacterial Agents/therapeutic use*; Female; Humans; Infant; Infant, Newborn; Male; Medical Audit; Retrospective Studies; Intensive Care, Neonatal/methods*; Bacteremia/diagnosis*; Blood Culture/methods*
  19. Gnanasegaran N, Govindasamy V, Kathirvaloo P, Musa S, Abu Kasim NH
    J Tissue Eng Regen Med, 2018 02;12(2):e881-e893.
    PMID: 28079995 DOI: 10.1002/term.2401
    Parkinson's disease (PD) is characterized by tremors and cognitive issues, and is due to the death of dopaminergic (DA-ergic) neurons in brain circuits that are responsible for producing neurotransmitter dopamine (DA). Currently, cell replacement therapies are underway to improve upon existing therapeutic approaches such as drug treatments and electrical stimulation. Among the widely available sources, dental pulp stem cells (DPSCs) from deciduous teeth have gained popularity because of their neural crest origin and inherent propensity toward neuronal lineage. Despite the various pre-clinical studies conducted, an important factor yet to be elucidated is the influence of growth phases in a typical trans-differentiation process. This study selected DPSCs at three distinct time points with variable growth phase proportions (G0/G1, S and G2/M) for in vitro trans-differentiation into DA-ergic-like cells. Using commercially available PCR arrays, we identified distinct gene profiles pertaining to cell cycles in these phases. The differentiation outcomes were assessed in terms of morphology and gene and protein expression, as well as with functional assays. It was noted that DPSCs with the highest G0/G1 phase were comparatively the best, representing at least a 2-fold up regulation (p 
    MeSH terms: Cell Differentiation/genetics; Cells, Cultured; Dental Pulp/cytology*; Gene Expression Regulation; Humans; Phenotype; Stem Cells/cytology*; Stem Cells/metabolism; Signal Transduction/genetics; Biomarkers/metabolism; Gene Expression Profiling; Dopaminergic Neurons/cytology*; Dopaminergic Neurons/metabolism
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