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Fulltext Medication use problems among older adults at a primary care: A narrative of literature review

Christopher C, Kc B, Shrestha S, Blebil AQ, Alex D, Mohamed Ibrahim MI, et al.

Aging Med (Milton), 2022 Jun;5(2):126-137.
PMID: 35783113 DOI: 10.1002/agm2.12203

Appropriate medication use is one of the most significant challenges among the older population. Although medication use problems are well documented at the secondary and tertiary health care level, the evidence at the primary care level of OECD region is limited. A narrative review of existing literature was conducted through a nonsystematic search for original articles through electronic search databases, Ovid Medline, Google Scholar from 2001 to 2021, and a combination of citation references. Medication use problems are prevalent in older adults at the primary care level. The main issues of medication use identified were as follows; nonadherence, adverse drug events, accessibility, polypharmacy, inappropriate medications, belief about medications, lack of knowledge and awareness, and lack of deprescribing. In addition, the current review has identified the possibilities of the problems: many medications, forgetfulness, lack of deprescribing, lack of communication, poor understanding, and limited awareness of inappropriate medications. This review found that various medication use problems subclusters were identified to impact the health care need among older adults. Therefore, effective interventions targeting these issues need to be developed to reduce medication use problems among older adults at a primary care level.
Combatting opioid misuse, overuse and abuse: a systematic review of pharmacists' services and outcomes

Kc B, Alrasheedy AA, Mohamed Ibrahim MI, Paudyal V, Christopher CM, Shrestha S, et al.

Pain Manag, 2024 Sep;14(9):519-529.
PMID: 39439259 DOI: 10.1080/17581869.2024.2411930

Aim: To examine the range of services pharmacists provide and their impact on patient outcomes, harm reduction, and appropriate opioid use.Methods: Six databases were searched (MEDLINE, EMBASE, Scopus, PsycINFO, CENTRAL and Cochrane Methodology Register) from inception to March 2023. The protocol was registered in PROSPERO (CRD42023401895).Results: Twenty-nine studies identified five key areas of pharmacist interventions in opioid management-naloxone programs and opioid de-escalation, patient and primary healthcare providers' education and motivational interview, prescription monitoring and opioid risk screening, clinical pharmacy interventions (pharmacotherapy, medication review, prescribing, adherence monitoring), and collaborative healthcare approaches to promote optimal opioid use. Outcomes assessment indicated harm reduction, improved safety, increased non-opioid analgesic use, decreased opioid consumption, and enhanced pain management.Conclusion: This review underscores pharmacists' vital role in tackling opioid misuse, overuse and abuse, providing a foundation for evidence-based policies to minimize harm and promote optimal opioid use.
Fulltext Assessing feasibility of conducting medication review with follow-up among older adults at community pharmacy: a pilot randomised controlled trial

Christopher CM, Blebil AQ, Bhuvan KC, Alex D, Ibrahim MIM, Ismail N, et al.

Int J Clin Pharm, 2024 Aug;46(4):843-853.
PMID: 38635115 DOI: 10.1007/s11096-024-01711-3

BACKGROUND: Medication review with follow-up is essential for optimising medication utilisation among the older adult population in primary healthcare.
AIM: This study aimed to evaluate the feasibility of implementing medication reviews with follow-up for older adults in community pharmacies and examined potential outcomes on medication use.
METHOD: A pilot randomised controlled trial was conducted with 4 cluster-randomised community pharmacies to assess the feasibility of the intervention. Two community pharmacies served as intervention and control groups. Both groups recruited older adults over 60 who were followed over 6 months. The translated Medication use Questionnaire (MedUseQ) was administered at baseline and 6 months for both groups. The outcomes were to assess the feasibility of conducting medication review with follow-up and the probable medication use outcomes from the intervention.
RESULTS: The intervention and control groups comprised 14 and 13 older adults. A total of 35 recommendations were made by pharmacists in the intervention group and 8 in the control group. MedUseQ was easily administered, providing some evidence the feasibility of the intervention. However, there were feasibility challenges such as a lack of pharmacists, collaborative practice, difficulties with the tool language, time constraints, and limited funds. Questionnaire results provided a signal of improvement in medication administration, adherence, and polypharmacy among intervention participants. The incidence of drug related problems was significantly higher in the control group (median = 1) after 6 months, U = 15, z = - 2.98, p = 0.01.
CONCLUSION: Medication review with follow-up is potentialy practical in community pharmacies, but there are feasibility issues. While these challenges can be addressed, it is essential to study larger sample sizes to establish more robust evidence regarding outcomes.
CLINICAL TRIAL REGISTRY: ClinicalTrials.Gov NCT05297461.
Estimating the population density of the Asian tapir (Tapirus indicus) in a selectively logged forest in Peninsular Malaysia

Rayan DM, Mohamad SW, Dorward L, Aziz SA, Clements GR, Christopher WCT, et al.

Integr Zool, 2012 Dec;7(4):373-380.
PMID: 23253368 DOI: 10.1111/j.1749-4877.2012.00321.x

The endangered Asian tapir (Tapirus indicus) is threatened by large-scale habitat loss, forest fragmentation and increased hunting pressure. Conservation planning for this species, however, is hampered by a severe paucity of information on its ecology and population status. We present the first Asian tapir population density estimate from a camera trapping study targeting tigers in a selectively logged forest within Peninsular Malaysia using a spatially explicit capture-recapture maximum likelihood based framework. With a trap effort of 2496 nights, 17 individuals were identified corresponding to a density (standard error) estimate of 9.49 (2.55) adult tapirs/100 km(2) . Although our results include several caveats, we believe that our density estimate still serves as an important baseline to facilitate the monitoring of tapir population trends in Peninsular Malaysia. Our study also highlights the potential of extracting vital ecological and population information for other cryptic individually identifiable animals from tiger-centric studies, especially with the use of a spatially explicit capture-recapture maximum likelihood based framework.
Fulltext Common variants of chemokine receptor gene CXCR3 and its ligands CXCL10 and CXCL11 associated with vascular permeability of dengue infection in peninsular Malaysia

Hoh BP, Umi-Shakina H, Zuraihan Z, Zaiharina MZ, Rafidah-Hanim S, Mahiran M, et al.

Hum Immunol, 2015 Jun;76(6):421-6.
PMID: 25858769 DOI: 10.1016/j.humimm.2015.03.019

Dengue causes significantly more human disease than any other arboviruses. It causes a spectrum of illness, ranging from mild self-limited fever, to severe and fatal dengue hemorrhagic fever, as evidenced by vascular leakage and multifactorial hemostatic abnormalities. There is no specific treatment available till date. Evidence shows that chemokines CXCL10, CXCL11 and their receptor CXCR3 are involved in severity of dengue, but their genetic association with the susceptibility of vascular leakage during dengue infection has not been reported. We genotyped 14 common variants of these candidate genes in 176 patients infected with dengue. rs4859584 and rs8878 (CXCL10) were significantly associated with vascular permeability of dengue infection (P<0.05); while variants of CXCL11 showed moderate significance of association (P=0.0527). Haplotype blocks were constructed for genes CXCL10 and CXCL11 (5 and 7 common variants respectively). Haplotype association tests performed revealed that, "CCCCA" of gene CXCL10 and "AGTTTAC" of CXCL11 were found to be significantly associated with vascular leakage (P=0.0154 and 0.0366 respectively). In summary, our association study further strengthens the evidence of the involvement of CXCL10 and CXCL11 in the pathogenesis of dengue infection.
Fulltext Do adolescents overestimate the prevalence of smoking among their peers? Findings from a study in Petaling District, Selangor, Malaysia

Lim KH, Kee CC, Sumarni MG, Lim KK, Tee EO, Christopher VM, et al.

Malaysian Journal of Public Health Medicine, 2011;11(2):6-12.
MyJurnal

Adolescents who overestimate the prevalence of smoking among their peers or other teens are at higher risk to take up smoking. The purpose of this study is to elucidate the factors which are related to adolescents’ overestimation of smoking. We surveyed form four (16 years old) students in Petaling District, Selangor. A sample was selected using two-stage stratified sampling, and data were collected using standardised, self-administered questionnaires. A response rate of 80.4% (n=1045/1298) was obtained, and a total of 943 students were included in the final analysis. About 73 percent (n=688/943) of the respondents overestimated the prevalence of smoking among their peers. The odds of overestimating increased as the number of close friends who smoke increased [Two close friends, OR=3.10(1.67-5.75), three close friends OR=10.81(4.44-26.3) and four-five close friends OR= 12.91(5.31-31.43)]. Those who had an elder brother who smoked (OR=1.95 (1.18-3.24)) and females [2.08(1.37-3.33) were more likely to overestimate peer smoking prevalence. Intervention programmes to correct the misperception of peer smoking prevalence are recommended, in addition to measures to modify the other factors that are amenable to intervention, so as to reduce the risk of smoking initiation among adolescents.
Oncological outcomes following robotic-assisted radical prostatectomy in a multiracial Asian population

Alvin LW, Gee SH, Hong HH, Christopher CW, Henry HS, Weber LK, et al.

J Robot Surg, 2015 Sep;9(3):201-9.
PMID: 26531200 DOI: 10.1007/s11701-015-0516-1

This study evaluates the oncological outcomes of RARP in a multiracial Asian population from a single institution. All suitable patients from 1st January 2003-30th June 2013 were identified from a prospectively maintained cancer registry. Peri-operative and oncological outcomes were analysed. Significance was defined as p < 0.05. There were n = 725 patients identified with a mean follow-up duration 28 months. The mean operative time, EBL and LOS were 186 min, 215 ml and 3 days, respectively. The pathological stage was pT2 in 68.6% (n = 497/725), pT3 in 31.3% (n = 227/725) and n = 1 patient with pT4 disease. The pathological Gleason scores (GS) were 6 in 27.9% (n = 202/725), GS 7 in 63.6% (n = 461/725) and GS ≥ 8 in 8.0 % (n = 58/725). The node positivity rate was 5.8% (n = 21/360). The positive margin rates were 31.0% (n = 154/497) and 70.9% (n = 161/227) for pT2 and pT3, respectively, and decreasing PSM rates are observed with surgical maturity. The biochemical recurrence rates were 9.7% (n = 48/497) and 34.2% (n = 78/228) for pT2 and pT3/T4, respectively. On multivariate analysis, independent predictors of BCR were pathological T stage and pathological Gleason score. Post-operatively, 78.5% (n = 569/725) of patients had no complications and 17.7% (n = 128/725) had minor (Clavien grade I-II) complications. This series, representing the largest from Southeast Asia, suggests that RARP can be a safe and oncologically feasible treatment for localised prostate cancer in an institution with moderate workload.
Fulltext Medication use problems and factors affecting older adults in primary healthcare

Christopher CM, Blebil AQ, Bhuvan KC, Alex D, Mohamed Ibrahim MI, Ismail N, et al.

Res Social Adm Pharm, 2023 Dec;19(12):1520-1530.
PMID: 37574369 DOI: 10.1016/j.sapharm.2023.08.001

BACKGROUND: As the largest demographic group utilizing primary healthcare facilities, older adults often face the challenge of managing multiple chronic illnesses, leading to numerous medications.
OBJECTIVE: The present study aims to assess medication use problems among older adults and explore the factors affecting them in primary healthcare settings.
METHODS: A mixed-method study was conducted to establish a baseline understanding of the perspectives and challenges faced by older adults, with regards to medication use. Translated Medication Use Questionnaire (MedUseQ), a patient-centered tool, was distributed to older adults above 60 in primary healthcare settings to assess their frequency of problems related to medication use. Fifteen semi-structured interviews were conducted to explore this topic in depth. Descriptive and inferential analyses were conducted with quantitative data. Interviews were transcribed verbatim, and thematic analysis was conducted. Quantitative and qualitative findings data were triangulated.
RESULTS: The study involved 393 participants. The most common problems with regards to medication use were polypharmacy (55.4%), administration difficulties (48.4%), limited awareness about adverse drug events (47.3%), issues with adherence (46.5%), and accessibility to primary healthcare (42.7%). Approximately 55% were satisfied with the older adult-centered medication use services by pharmacist and doctors. The qualitative findings showed that major factors affecting medication use were forgetfulness, language barriers, lack of awareness, transportation problems, long waiting times, and multiple visits to healthcare facilities.
CONCLUSION: The findings of this study reveal that a significant proportion, around 50%, of the older adult population face challenges with medication use in Penang. These difficulties mainly stem from medication administration, adherence, accessibility, polypharmacy, and inadequate medication knowledge. The qualitative analysis further highlighted several factors that contribute to such medication-related problems. Given the rapidly aging Association of Southeast Asian Nations (ASEAN) population, it is essential to devise effective solutions and strategies to tackle medication use-related issues among older adults.
Fulltext Prevalence of overweight/obesity among the medical students, Malaysia

Gopalakrishnan S, Ganeshkumar P, Prakash MVS, Christopher, Amalraj V

Med J Malaysia, 2012 Aug;67(4):442-4.
PMID: 23082463

BACKGROUND: Overweight and obesity are defined as abnormal or excessive fat accumulation that may impair health. Body mass index is a simple index of weight-for-height that is commonly used in classifying overweight and obesity in adult populations and individuals.
OBJECTIVES: A study was conducted to screen the medical students of AIMST University for overweight/obesity using Body Mass Index(BMI) and to determine the prevalence among them.
MATERIALS AND METHODS: This is an institution based cross sectional study was conducted among 290 medical students using a pre-tested questionnaire and measured their Body Mass Index (BMI). Data obtained was analyzed statistically by calculating proportions.
RESULTS: Out of 290 students who participated in the study, 45.2% were males. In the study, 14.8% were found to be overweight (BMI 23-24.9 kg/m2); 13.7% of males and 15.7% of females. Pre-obese students (BMI 25-29kg/m2) accounted for 15.9% of the total (males 18.3% and females 13.8%). 5.2% were found to be obese (BMI > 30 kg/m2): males 9.2% and females 1.9%. Also 14.8% were found to be underweight (males 12.2% and females 17.0%). The study group consisted of 63.8% Indian, 32.4% Chinese and 3.8% Malay students.
CONCLUSIONS: The study reveals that the prevalence of overweight and obesity among the medical students of AIMST University is on the high, which is comparable to the findings of earlier studies conducted in Malaysia, reinforcing the need to encourage healthy lifestyle, healthy food habits and a physically active daily routine, among the adolescents and youth of this country.
Bone Mineral Density Testing in Spinal Cord Injury: 2019 ISCD Official Position

Morse LR, Biering-Soerensen F, Carbone LD, Cervinka T, Cirnigliaro CM, Johnston TE, et al.

J Clin Densitom, 2019 08 03;22(4):554-566.
PMID: 31501005 DOI: 10.1016/j.jocd.2019.07.012

Spinal cord injury (SCI) causes rapid osteoporosis that is most severe below the level of injury. More than half of those with motor complete SCI will experience an osteoporotic fracture at some point following their injury, with most fractures occurring at the distal femur and proximal tibia. These fractures have devastating consequences, including delayed union or nonunion, cellulitis, skin breakdown, lower extremity amputation, and premature death. Maintaining skeletal integrity and preventing fractures is imperative following SCI to fully benefit from future advances in paralysis cure research and robotic-exoskeletons, brain computer interfaces and other evolving technologies. Clinical care has been previously limited by the lack of consensus derived guidelines or standards regarding dual-energy X-ray absorptiometry-based diagnosis of osteoporosis, fracture risk prediction, or monitoring response to therapies. The International Society of Clinical Densitometry convened a task force to establish Official Positions for bone density assessment by dual-energy X-ray absorptiometry in individuals with SCI of traumatic or nontraumatic etiology. This task force conducted a series of systematic reviews to guide the development of evidence-based position statements that were reviewed by an expert panel at the 2019 Position Development Conference in Kuala Lumpur, Malaysia. The resulting the International Society of Clinical Densitometry Official Positions are intended to inform clinical care and guide the diagnosis of osteoporosis as well as fracture risk management of osteoporosis following SCI.
Can we predict ectotherm responses to climate change using thermal performance curves and body temperatures?

Sinclair BJ, Marshall KE, Sewell MA, Levesque DL, Willett CS, Slotsbo S, et al.

Ecol Lett, 2016 11;19(11):1372-1385.
PMID: 27667778 DOI: 10.1111/ele.12686

Thermal performance curves (TPCs), which quantify how an ectotherm's body temperature (Tb ) affects its performance or fitness, are often used in an attempt to predict organismal responses to climate change. Here, we examine the key - but often biologically unreasonable - assumptions underlying this approach; for example, that physiology and thermal regimes are invariant over ontogeny, space and time, and also that TPCs are independent of previously experienced Tb. We show how a critical consideration of these assumptions can lead to biologically useful hypotheses and experimental designs. For example, rather than assuming that TPCs are fixed during ontogeny, one can measure TPCs for each major life stage and incorporate these into stage-specific ecological models to reveal the life stage most likely to be vulnerable to climate change. Our overall goal is to explicitly examine the assumptions underlying the integration of TPCs with Tb , to develop a framework within which empiricists can place their work within these limitations, and to facilitate the application of thermal physiology to understanding the biological implications of climate change.
Fulltext Prevalence and awareness of lower urinary tract symptoms among males in the outpatient clinics of Universiti Kebangsaan Malaysia Medical Centre

Ho, Christopher C.K., Praveen, S., Goh, E.H., Tan, G.H., Badrulhisham, B., Zulkifli, M.Z., et al.

Medicine & Health, 2011;6(2):98-106.
MyJurnal

This study aims to determine the prevalence of lower urinary tract symptoms (LUTS) and level of awareness among male outpatients in Universiti Kebangsaan Malaysia Medical Centre (UKMMC). A questionnaire consisting of demographic data, questions related to knowledge, attitude and practice on BPH and the International Prostate Symptom Score (IPSS) was used for this study. Uroflowmetry and bladder scan were used to evaluate the function of the urinary tract and severity of BPH. Urine dipstick was done for glycosuria, proteinuria and haematuria. A total of 220 respondents were surveyed. The prevalence of moderately and severely symptomatic LUTS was 42.7%. The most commonly reported LUTS were nocturia (78.2%), frequency (58.2%) and incomplete emptying (44.6%). The prevalence of glycosuria, proteinuria and haematuria were 23.6%, 11.4% and 1.8% respectively. There was a significant association between increasing age with the severity of LUTS (p=0.005). Out of 102 respondents with voided urine volume greater than 150 mL, there was a significant decrease in maximum (Qmax) (p=0.039) and average (Qave) urine flow rates with every 10 years increase of age (p=0.001). The majority of respondents (59.5%) have heard of BPH before. Over 78.2% of the respondents would seek medical attention if they have LUTS with 15.9% saying they would seek traditional treatment. In conclusion, the prevalence of LUTS was high and the level of awareness was satisfactory.
Study site: surgical and medical clinics, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)
Fulltext The impact of dry needling on patients with neck pain in a tertiary hospital

Ho, S.E., Loong, S., Fatin Nur Laily R., Wan Nur Aizzati M., Muhammad Firdaus I.Z., Ho, Christopher C.K., et al.

Journal of Surgical Academia, 2015;5(1):44-50.
MyJurnal

Neck pain presents as a symptom of dull pain or discomfort mainly along the trapezius muscle. Dry needling is an invasive procedure which uses acupuncture needle directed at myofascial trigger points. The aim of the study was to evaluate the effectiveness of dry needling in managing patients with neck pain. A pre-test-post-test interventional study design was used. Patient education package was provided to 32 respondents who fulfilled the inclusion criteria. A 13-item Pain Catastrophizing Scale (PCS) questionnaire was used to assess Rumination, Magnification and Helplessness. Subjective pain intensity was measured by Visual Analogue Scale (VAS). These questionnaires were given before and after the dry needling intervention. The findings reported that respondents scored high in pre-test total PCS score (27.41±13.652). Post-test result revealed a significant improvement in total PCS score (23.06±13.938) (p = 0.000). Post-test VAS score (4.78±1.237) was also significantly better than pre-test (6.47±1.414) (p = 0.000). There was no significant difference in pre-test PCS in terms of marital status (p > 0.05) whereas there was significant difference between marital status and rumination in post-test (Z = -2.303, p = 0.021). There was significant difference between pre-test magnification in terms of respondents’ occupation (p = 0.008) and race (p = 0.035) but no significant difference in post-test. Respondents’ age group showed no significant differences between pre-test and post-test PCS and VAS (p > 0.05). In conclusion, patients who received dry needling showed improvement in pain intensity and catastrophizing towards neck pain.
Fulltext Ruthenium(II) Polypyridyl Complexes as FRET Donors: Structure- and Sequence-Selective DNA-Binding and Anticancer Properties

Elgar CE, Yusoh NA, Tiley PR, Kolozsvári N, Bennett LG, Gamble A, et al.

J Am Chem Soc, 2023 Jan 18;145(2):1236-1246.
PMID: 36607895 DOI: 10.1021/jacs.2c11111

Ruthenium(II) polypyridyl complexes (RPCs) that emit from metal-to-ligand charge transfer (MLCT) states have been developed as DNA probes and are being examined as potential anticancer agents. Here, we report that MLCT-emissive RPCs that bind DNA undergo Förster resonance energy transfer (FRET) with Cy5.5-labeled DNA, forming mega-Stokes shift FRET pairs. Based on this discovery, we developed a simple and rapid FRET binding assay to examine DNA-binding interactions of RPCs with diverse photophysical properties, including non-"light switch" complexes [Ru(dppz)2(5,5'dmb)]2+ and [Ru(PIP)2(5,5'dmb)]2+ (dppz = dipyridophenazine, 5,5'dmb = 5,5'-dimethyl-2,2'-bipyridine, PIP = 2-phenyl-imidazo[4,5-f][1,10]phenanthroline). Binding affinities toward duplex, G-quadruplex, three-way junction, and mismatch DNA were determined, and derived FRET donor-acceptor proximities provide information on potential binding sites. Molecules characterized by this method demonstrate encouraging anticancer properties, including synergy with the PARP inhibitor Olaparib, and mechanistic studies indicate that [Ru(PIP)2(5,5'dmb)]2+ acts to block DNA replication fork progression.
Fulltext Age-Related Clinical Spectrum of Plasmodium knowlesi Malaria and Predictors of Severity

Grigg MJ, William T, Barber BE, Rajahram GS, Menon J, Schimann E, et al.

Clin Infect Dis, 2018 Jul 18;67(3):350-359.
PMID: 29873683 DOI: 10.1093/cid/ciy065

BACKGROUND: Plasmodium knowlesi is increasingly reported in Southeast Asia, but prospective studies of its clinical spectrum in children and comparison with autochthonous human-only Plasmodium species are lacking.
METHODS: Over 3.5 years, we prospectively assessed patients of any age with molecularly-confirmed Plasmodium monoinfection presenting to 3 district hospitals in Sabah, Malaysia.
RESULTS: Of 481 knowlesi, 172 vivax, and 96 falciparum malaria cases enrolled, 44 (9%), 71 (41%), and 31 (32%) children aged ≤12 years. Median parasitemia was lower in knowlesi malaria (2480/μL [interquartile range, 538-8481/μL]) than in falciparum (9600/μL; P < .001) and vivax malaria. In P. knowlesi, World Health Organization-defined anemia was present in 82% (95% confidence interval [CI], 67%-92%) of children vs 36% (95% CI, 31%-41%) of adults. Severe knowlesi malaria occurred in 6.4% (95% CI, 3.9%-8.3%) of adults but not in children; the commenst severity criterion was acute kideny injury. No patient had coma. Age, parasitemia, schizont proportion, abdominal pain, and dyspnea were independently associated with severe knowlesi malaria, with parasitemia >15000/μL the best predictor (adjusted odds ratio, 16.1; negative predictive value, 98.5%; P < .001). Two knowlesi-related adult deaths occurred (fatality rate: 4.2/1000 adults).
CONCLUSIONS: Age distribution and parasitemia differed markedly in knowlesi malaria compared to human-only species, with both uncomplicated and severe disease occurring at low parasitemia. Severe knowlesi malaria occurred only in adults; however, anemia was more common in children despite lower parasitemia. Parasitemia independently predicted knowlesi disease severity: Intravenous artesunate is warranted initially for those with parasitemia >15000/μL.
Fulltext Impacts of logging on density-dependent predation of dipterocarp seeds in a South East Asian rainforest

Bagchi R, Philipson CD, Slade EM, Hector A, Phillips S, Villanueva JF, et al.

Philos Trans R Soc Lond B Biol Sci, 2011 Nov 27;366(1582):3246-55.
PMID: 22006965 DOI: 10.1098/rstb.2011.0034

Much of the forest remaining in South East Asia has been selectively logged. The processes promoting species coexistence may be the key to the recovery and maintenance of diversity in these forests. One such process is the Janzen-Connell mechanism, where specialized natural enemies such as seed predators maintain diversity by inhibiting regeneration near conspecifics. In Neotropical forests, anthropogenic disturbance can disrupt the Janzen-Connell mechanism, but similar data are unavailable for South East Asia. We investigated the effects of conspecific density (two spatial scales) and distance from fruiting trees on seed and seedling survival of the canopy tree Parashorea malaanonan in unlogged and logged forests in Sabah, Malaysia. The production of mature seeds was higher in unlogged forest, perhaps because high adult densities facilitate pollination or satiate pre-dispersal predators. In both forest types, post-dispersal survival was reduced by small-scale (1 m(2)) conspecific density, but not by proximity to the nearest fruiting tree. Large-scale conspecific density (seeds per fruiting tree) reduced predation, probably by satiating predators. Higher seed production in unlogged forest, in combination with slightly higher survival, meant that recruitment was almost entirely limited to unlogged forest. Thus, while logging might not affect the Janzen-Connell mechanism at this site, it may influence the recruitment of particular species.
Fulltext Urban governance and the systems approaches to health-environment co-benefits in cities

Oliveira JA, Doll CN, Siri J, Dreyfus M, Farzaneh H, Capon A

Cad Saude Publica, 2015 Nov;31 Suppl 1:25-38.
PMID: 26648361 DOI: 10.1590/0102-311X00010015

The term "co-benefits" refers to positive outcomes accruing from a policy beyond the intended outcome, often or usually in other sectors. In the urban context, policies implemented in particular sectors (such as transport, energy or waste) often generate multiple co-benefits in other areas. Such benefits may be related to the reduction of local or global environmental impacts and also extend into the area of public health. A key to identifying and realising co-benefits is the adoption of systems approaches to understand inter-sectoral linkages and, in particular, the translation of this understanding to improved sector-specific and city governance. This paper reviews a range of policies which can yield health and climate co-benefits across different urban sectors and illustrates, through a series of cases, how taking a systems approach can lead to innovations in urban governance which aid the development of healthy and sustainable cities.
Phylogeography of Tetrancistrum nebulosi (Monogenea, Dactylogyridae) on the host of mottled spinefoot (Siganus fuscescens) in the South China Sea, inferred from mitochondrial COI and ND2 genes

Wang M, Yan S, Brown CL, Shaharom-Harrison F, Shi SF, Yang TB

Mitochondrial DNA A DNA Mapp Seq Anal, 2016 11;27(6):3865-3875.
PMID: 25319302

To examine the phylogeographical pattern of Tetrancistrum nebulosi (Monogenea, Dactylogyridae) in the South China Sea, fragments of mitochondrial cytochrome c oxidase subunit I and NADH dehydrogenase subunit 2 genes were obtained for 220 individuals collected from 8 localities along the southeast coast of China and 1 locality in Terengganu, Malaysia. Based on these two genes, two and three distinct clades with geographic signals were revealed on the phylogenetic trees respectively. The divergence between these clades was estimated to occur in the late Pleistocene. Analysis of molecular variance and pairwise FSTsuggested a high rate of gene flow among individuals sampled from the Chinese coast, but with obvious genetic differentiation from the Malaysian population. Mismatch distribution and neutrality tests indicated that the T. nebulosi population experienced expansion in Pleistocene low sea level periods. Vicariance was considered to account for the genetic divergence between Chinese and Malaysian populations, while sea level fluctuations and mainland-island connections during glacial cycles were associated with the slight genetic divergence between the populations along the mainland coast of China and those off Sanya. On the contrary, oceanographic circulations and host migration could lead to genetic homogeneity of populations distributed along the mainland coast of China.
Zoothamnium duplicatum infestation of cultured horseshoe crabs (Limulus polyphemus)

Shinn AP, Mühlhölzl AP, Coates CJ, Metochis C, Freeman MA

J Invertebr Pathol, 2015 Feb;125:81-6.
PMID: 25499897 DOI: 10.1016/j.jip.2014.12.002

An outbreak of the sessile peritrich Zoothamnium duplicatum in a pilot, commercial-scale Limulus polyphemus hatchery resulted in the loss of ∼96% (40,000) second/third instar larvae over a 61day period. peritrich growth was heavy, leading to mechanical obstruction of the gills and physical damage. The peritrichs were controlled without resultant loss of juvenile crabs by administering 10ppm chlorine in freshwater for 1h and the addition of aquarium grade sand; a medium into which the crabs could burrow and facilitate cleaning of the carapace. Peritrich identity was confirmed from a partial SSU rDNA contiguous sequence of 1343bp (99.7% similarity to Z. duplicatum).
Fulltext Heterozygosity-fitness correlations in a wild mammal population: accounting for parental and environmental effects

Annavi G, Newman C, Buesching CD, Macdonald DW, Burke T, Dugdale HL

Ecol Evol, 2014 Jun;4(12):2594-609.
PMID: 25360289 DOI: 10.1002/ece3.1112

HFCs (heterozygosity-fitness correlations) measure the direct relationship between an individual's genetic diversity and fitness. The effects of parental heterozygosity and the environment on HFCs are currently under-researched. We investigated these in a high-density U.K. population of European badgers (Meles meles), using a multimodel capture-mark-recapture framework and 35 microsatellite loci. We detected interannual variation in first-year, but not adult, survival probability. Adult females had higher annual survival probabilities than adult males. Cubs with more heterozygous fathers had higher first-year survival, but only in wetter summers; there was no relationship with individual or maternal heterozygosity. Moist soil conditions enhance badger food supply (earthworms), improving survival. In dryer years, higher indiscriminate mortality rates appear to mask differential heterozygosity-related survival effects. This paternal interaction was significant in the most supported model; however, the model-averaged estimate had a relative importance of 0.50 and overlapped zero slightly. First-year survival probabilities were not correlated with the inbreeding coefficient (f); however, small sample sizes limited the power to detect inbreeding depression. Correlations between individual heterozygosity and inbreeding were weak, in line with published meta-analyses showing that HFCs tend to be weak. We found support for general rather than local heterozygosity effects on first-year survival probability, and g2 indicated that our markers had power to detect inbreeding. We emphasize the importance of assessing how environmental stressors can influence the magnitude and direction of HFCs and of considering how parental genetic diversity can affect fitness-related traits, which could play an important role in the evolution of mate choice.

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