Homalomena galbana Baharuddin S. & P.C. Boyce is described from the Maliau Basin Conservation Area, Sabah, representing the first species of the Homalomena Supergroup to be recorded from Sabah, and the first mesophytic species of the Supergroup to be described from Borneo. The species is illustrated and a brief discussion on the pollination role of interpistillar staminodes is presented.
Rhaphidophora megasperma Engl., a species hitherto regarded as endemic to Sarawak, East Malaysia, is published as a new record for Peninsular Malaysia. It is the first species in the Rhaphidophora Spathacea group recorded for western Sunda. The species is illustrated and a key to the perforate-laminated Rhaphidophora in Peninsular Malaysia is presented.
Floods are natural disasters that occur without much warning. Natural disasters can result in negative impact due to highly stressful event. Floods can cause mental and emotional disorders to the victims and could also induce stress and trauma either in the short or long terms. This research was carried out to recognize the psychological sequelae of floods and how to overcome them. This study describes the cross sectional descriptive pattern of flood victims in Johor. The DASS Test Questionnaire which is a measurement tool endorsed by the Family Development Institute, Ministry of Health Malaysia was used. We carried out the research in 3 districts of Johor which were the worst hit areas by the flood disaster. Twenty-three percent of the participants were males while 77% were females. The DASS Test Questionnaire showed that 13% were mildly depressed, 7% moderately depressed and 3% were severely depressed. It also revealed that 22% were mildly anxious, 19% moderately anxious, 5% severely anxious and 4% had very severe anxiety. On the stress scores, 15% suffered mild stress, 11% were moderately stressed while 2% were severely stressed. A committee to conduct the motivation programme for the state of Johor was formed by Jabatan Kesihatan Negeri Johor with the cooperation of the PROKEM committee from Hospital Permai, Johor Bahru. This committee headed by the Deputy Director of Health (Medical Division) attempted to overcome the psychological sequelae suffered by flood victims. The activities conducted by the PROKEM staff and staff from the Ministry of Health were monitored by the committee based at Hospital Permai, Johor Bahru. The Bilik Gerakan was in operation for 24 hours a day with meetings conducted every morning and evening to brief and debrief members of staff who were going to carry out the motivation programme. Feedback was also obtained from staff on their return from the various relief centres.
A total of 10 volunteers were monitored for radiation doses, whose spouses were given radio-iodine (131I) orally. Nine of the spouses were given radio-iodine for Graves' disease and one for thyroid carcinoma. It was found that the highest radiation dose received by the volunteer was only 13.5% of the annual dose limit for individual members of the public. Hence, patients treated with radio-iodine do not pose a significant radiation hazard to the public.
Acute suppurative thyroiditis in a 62 year old lady with enteric fever is reported. Plain radiography of the neck showed a distinct localised abscess cavity with air fluid level. A rare causative agent Salmonella typhi was isolated. Needle aspiration and antibiotics resulted in complete recovery.
The genus Rasbora is one of the most species-rich genus among the freshwater fishes and cryptic diversity has been a major hindrance in species identification in the past four decades due to their high similarities in terms of morphology. This study aimed to investigate this issue both morphologically and molecularly. In this study, a total of 23 morphometric parameters were used to differentiate the 103 Rasbora fish samples harvested from different regions of Sarawak state of Malaysia via Multivariate Stepwise Discriminant Function Analysis (SDFA). Then, cytochrome oxidase subunit I (COI) gene was utilised to further distinguish 33 of these fishes, followed by sequence and phylogenetic analysis. Our results unravelled pre-anal length as strongest morphometric discriminant (100%) and that all eight Rasbora species tested are monophyletic except for R. sumatrana and R. caudimaculata, revealing possible cryptic Rasbora species. Further investigations are vital to enrich the data from this study for Rasbora cryptic diversity and conservation studies in future.
Essential oil of Homalomena pineodora inhibits diabetic pathogens; however, the activity was not sustainable when applied as wound dressing. This study aims to synthesise the essential oil nanoparticle using chitosan. The nanoparticles were synthesised with ion gelation method, confirmed by spectroscopic analysis. The spherical nanoparticles display a size of 70 nm, with strong surface charge of +24.10 mV. The nanoparticles showed an initial burst release followed by a slow release pattern for 72 h, following the first order of kinetic. The release behaviour was ideal for wound dressing. The antimicrobial activity was broad spectrum. The formation of nanoparticle enhanced the antimicrobial efficacy of the essential oil. The nanoparticle also showed a concentration-dependent killing behaviour on time-kill assay. In the 3D collagen wound models, the nanoparticles reduced the microbial growth by 60-80%. In conclusion, H. pineodora nanoparticles showed pharmaceutical potential in inhibiting microbial growth on diabetic ulcers.