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Fulltext RELATIONSHIP OF CONDITION INDEX AND REPRODUCTIVE STATUS OF BLACK SNAIL, FAUNUS ATER IN MERCHANG LAGOON

Nurul Husna Hassan, Roslizawati Ab Lah

UMT Journal of Undergraduate Research, 2020;2(1):1-8.
MyJurnal

Black snail, Faunus ater is an abundant species in Malaysia yet not many research have focused on its physiological and biological activities. This research aimed to assess the condition index (CI) and reproductive status based on the gonadosomatic index (GSI) for short-term duration. Samples were collected monthly from Merchang Lagoon, from November 2018 to January 2019. Four different types of condition indices equation were applied in this study and the results revealed that there were significant differences between four equations for measuring the CI (P=0.000). However, the result for the GSI shows no significant difference between three month of sampling (P>0.05). CI based on fresh weight measurement (Fww/Tww x 100) and dry weight measurement (Fdw/Fww x 100) reached its peak when GSI decreased. The rest of the trend for CI fluctuated and CI was not affected by GSI. Overall, this study concluded that, there were trends observed in CI and GSI for the black snails. However, it is suggested that longer term observation in future research is needed have a better understanding on the black snails.

Matched MeSH terms: African Americans
Fulltext EFFECT OF PHOTO-SELECTIVE NETTING ON GROWTH DEVELOPMENT OF GREEN AMARANTH (Amaranthus viridis L.)

SITI NABILAH MOHAMMAD SABRI, NURUL FAZIHA IBRAHIM, SITI NABILAH MOHAMMAD SABRI, SUHAIZAN LOB

UMT Journal of Undergraduate Research, 2020;2(3):67-72.
MyJurnal

Green amaranth (Amaranthus viridis L.) is one of the most popular leafy vegetables cultivated in Malaysia. Photo-selective netting is a revolutionary agricultural-technical idea, allowing traditional nets to be improved to a sophisticated level, which can impact microclimate and solar radiation as well as protect crops from pests. This study aims to investigate the growth performance of green amaranth under different three different treatments of photo-selective nets including black, and yellow shade nets and control. The assessed physiological, pre-harvest and post-harvest parameters were air temperature and relative humidity, measurement of absorption of photosynthetically active radiation (PAR), plant height, number of leaves, and dry weight. This study found that the yellow shade net showed the best performance in plant growth with the average difference in plant height (4.11 cm), average leaves number (7 leaves) and average dry weight (18.58 mg) were the highest compared to black shade net and control (without shading). In conclusion, photo-selective yellow shade net was able to enhance the growth development of green amaranth and could be applied in the large scale production to boost the growth and yield of leafy vegetables.

Matched MeSH terms: African Americans
Fulltext FUNGAL SPECIES ASSOCIATED WITH BLACK SPOT DISEASE IN ROSE

NUR ELIA NADHIRA MOHD ASMADI, WONG KAH YIN, NUR HADINA SALEH, NURUL FAZIHA IBRAHIM, SUHAIZAN LOB

UMT Journal of Undergraduate Research, 2020;2(3):45-50.
MyJurnal

Black spot disease is a significant worldwide disease on the rose plant. Due to this infection, the leaves become yellow and eventually fall off. The occurrence of this disease has become a major problem, especially in landscape purpose. Therefore, this research was conducted to isolate fungal species from black spot disease in rose and identify using morphological characteristics. Then, all the isolates were tested for pathogenicity to confirm Koch’s postulates. In this study, four fungal isolates have been successfully isolated from black spot disease in rose namely Rhizoctonia sp. (one isolate), Colletotrichum sp. (two isolates) and Penicillium sp. (one isolate). Based on pathogenicity test result using potato dextrose agar (PDA) plug technique, fungus UMTT27R (Penicillium sp.) showed highly pathogenic on rose’s leaves with disease severity (DS) = 88.89% followed by UMTT13R (Colletotrichum sp.) with DS=72.22%, UMTT21R (Colletotrichum sp.) with DS=66.67% and UMTT4R (Rhizoctonia sp.) with DS=61.11%. Correct identification of fungal pathogens is very important to strategize a proper method to control the black spot disease in rose cultivation.

Matched MeSH terms: African Americans
Fulltext REMOVAL OF ERIOCHROME BLACK T DYE FROM AQUEOUS SOLUTION BY NICKEL/ALUMINIUM LAYERED DOUBLE HYDROXIDE

NURDIYANA ROSLAN, MAZIDAH MAMAT, MAZIDAH MAMAT, KU HALIM KU BULAT

UMT Journal of Undergraduate Research, 2019;1(3):79-86.
MyJurnal

Batik industryiswell known intheEast Coast of Malaysia, particularly in Terengganu and Kelantan. This industry consumes a lot of waterforthe batik making processwhich contributes tohigh dischargeof wastewater containingexcess dye pollutants. Hence,in this study, ananionic clayofnickel/aluminium-layered double hydroxide (NiAL) was investigatedas a potential adsorbent for the removal of anionic dyeof Eriochrome Black T (EBT). The NiAL was synthesized via self-assemblymethod and characterization of NiALwas carried outusing powder X-ray diffraction (PXRD) and Fourier transform infrared spectrophotometer (FTIR). The composition and morphology of NiAL was further analyzed using carbon, hydrogen, nitrogen, sulphur elemental analyzer (CHNS), thermogravimetric analyzer (TGA) and scanning electron microscope (SEM).The potential of NiAL as an adsorbent for the removal ofEBT in aqueous solution was tested at different dosages of NiAL. Theadsorptionabilitywasanalyzedby using two common adsorption isotherms, which were Langmuir and Freundlich models. The adsorption of EBT onto NiAL was governedby Freundlich isotherm model indicating that the adsorption occurs in heterogeneous system.

Matched MeSH terms: African Americans
Ocular conditions among the Orang Asli, the jungle aborigines of West Malaysia

Weerekoon L

Trans Ophthalmol Soc N Z, 1973;25:30-5.
PMID: 4519227
Matched MeSH terms: African Americans
Strategies for evaluating B*18 allelic diversity by sequence-based typing applied to studies of a population from Singapore and African-Americans

Hou L, Tu B, Ling G, Tang T, Cao K, Steiner NK, et al.

Tissue Antigens, 2006 Jan;67(1):66-9.
PMID: 16451205

Strategies to resolve B*18 alleles which carry a deletion in intron 1 close to the 5' end of exon 2 relative to other HLA-B alleles or a null allele mutation in exon 1 and to resolve ambiguities among allele combinations including B*18 are described. B*18 allele frequencies from volunteer donors recruited for two hematopoietic stem cell registries show the presence of two alleles, B*180101 and B*1802, in a population from Singapore and only B*180101 in African-Americans.

Matched MeSH terms: African Americans*
A comparison of plasma lipoprotein levels in Asians, Africans and Europeans

Chong YH, Mills GL

Med J Malaya, 1966 Jun;20(4):284-7.
PMID: 4224336
Matched MeSH terms: African Americans
Asian minorities in Asian countries: intersecting disparities affecting minoritised groups

Dee EC, Paguio JA, Yao JS, Lim J, Lasco G

Lancet Oncol, 2021 09;22(9):e381.
PMID: 34478665 DOI: 10.1016/S1470-2045(21)00350-8
Matched MeSH terms: African Americans*
Some impressions of childbearing in tropical areas. II. Pre-eclampsia and low birthweight

Thompson B, Baird D

J Obstet Gynaecol Br Commonw, 1967 Aug;74(4):499-509.
PMID: 6033270
Matched MeSH terms: African Americans
Some impressions of childbearing in tropical areas. 3. Outcome of labour

Thompson B, Baird D

J Obstet Gynaecol Br Commonw, 1967 Aug;74(4):510-22.
PMID: 6033271
Matched MeSH terms: African Americans
Collective psychological ownership and the rise of reactionary counter-movements defending the status quo

Selvanathan HP, Lickel B, Jetten J

Br J Soc Psychol, 2021 Apr;60(2):587-609.
PMID: 32949026 DOI: 10.1111/bjso.12418

Social movements pushing for social change are often met with reactionary counter-movements that defend the status quo. The present research examined this interplay by focusing on the role of racial majority group members claiming collective psychological ownership. We examined collective ownership that stems from being native to the land and from being founders of the nation. Study 1 found that in Malaysia, the Malay majority group endorsed more native ownership than Chinese and Indian minorities, which in turn predicted greater threat in response to protests demanding electoral reforms and subsequently greater support for a reactionary pro-government movement. Situated in the United States, Study 2 found that the more that White Americans endorsed founder ownership beliefs, the more they reported negative attitudes towards the Black Lives Matter protests, which in turn predicted more support for White nationalistic counter-protests. This effect was stronger among White people compared to people of colour. Study 3 examined both founder and native ownership in Australia. Founder (but not native) ownership beliefs predicted more negative attitudes towards Invasion Day protests, which subsequently predicted more support for counter-protests defending Australia Day celebrations. Implications of culture-specific beliefs about collective ownership for social movement research are discussed.

Matched MeSH terms: African Americans
Fulltext Common Genetic Variation In Cellular Transport Genes and Epithelial Ovarian Cancer (EOC) Risk

Chornokur G, Lin HY, Tyrer JP, Lawrenson K, Dennis J, Amankwah EK, et al.

PLoS One, 2015;10(6):e0128106.
PMID: 26091520 DOI: 10.1371/journal.pone.0128106

BACKGROUND: Defective cellular transport processes can lead to aberrant accumulation of trace elements, iron, small molecules and hormones in the cell, which in turn may promote the formation of reactive oxygen species, promoting DNA damage and aberrant expression of key regulatory cancer genes. As DNA damage and uncontrolled proliferation are hallmarks of cancer, including epithelial ovarian cancer (EOC), we hypothesized that inherited variation in the cellular transport genes contributes to EOC risk.
METHODS: In total, DNA samples were obtained from 14,525 case subjects with invasive EOC and from 23,447 controls from 43 sites in the Ovarian Cancer Association Consortium (OCAC). Two hundred seventy nine SNPs, representing 131 genes, were genotyped using an Illumina Infinium iSelect BeadChip as part of the Collaborative Oncological Gene-environment Study (COGS). SNP analyses were conducted using unconditional logistic regression under a log-additive model, and the FDR q<0.2 was applied to adjust for multiple comparisons.
RESULTS: The most significant evidence of an association for all invasive cancers combined and for the serous subtype was observed for SNP rs17216603 in the iron transporter gene HEPH (invasive: OR = 0.85, P = 0.00026; serous: OR = 0.81, P = 0.00020); this SNP was also associated with the borderline/low malignant potential (LMP) tumors (P = 0.021). Other genes significantly associated with EOC histological subtypes (p<0.05) included the UGT1A (endometrioid), SLC25A45 (mucinous), SLC39A11 (low malignant potential), and SERPINA7 (clear cell carcinoma). In addition, 1785 SNPs in six genes (HEPH, MGST1, SERPINA, SLC25A45, SLC39A11 and UGT1A) were imputed from the 1000 Genomes Project and examined for association with INV EOC in white-European subjects. The most significant imputed SNP was rs117729793 in SLC39A11 (per allele, OR = 2.55, 95% CI = 1.5-4.35, p = 5.66x10-4).
CONCLUSION: These results, generated on a large cohort of women, revealed associations between inherited cellular transport gene variants and risk of EOC histologic subtypes.

Matched MeSH terms: African Americans
First Report of Dolabra nepheliae on Rambutan and Litchi in Hawaii and Puerto Rico

Rossman AY, Goenaga R, Keith L

Plant Dis, 2007 Dec;91(12):1685.
PMID: 30780638 DOI: 10.1094/PDIS-91-12-1685C

A stem canker disease on rambutan (Nephelium lappaceum L.) and litchi (Litchi chinensis Sonn. (Sapindaceae) was found in plants in Hawaii and Puerto Rico. A fungus associated with cankers was identified as Dolabra nepheliae C. Booth & Ting (1). Numerous black, stipitate, elongate ascomata were produced within cracks of cankers. These ascomata contain elongate, bitunicate asci amid unbranched, interthecial elements and thin, cylindrical, hyaline ascospores measuring 96 to 136 × 2.5 to 3.5 μm. This fungus was originally described from Malaysia on N. lappaceum (1) and is also known on pulasan (N. mutabile Blume) in Australia (2). Classified by the Food and Agriculture Organization as a 'minor disease', the canker appears to be relatively common in Hawaii and was most likely introduced into Puerto Rico on imported germplasm. Nevertheless, efforts are underway to study the potential damage of this disease as well as mechanisms of control, including introduction of disease resistant clones. Specimens have been deposited at the U.S. National Fungus Collections (Hawaii on Nephelium BPI 878189, Puerto Rico (PR) on Nephelium BPI 878188, and PR on Litchi BPI 878190). Although a specimen of D. nepheliae on L. chinensis was collected from Hawaii in 1984 by G. Wong and C. Hodges and deposited as BPI 626373, this fungus was not known on Nephelium spp. in Hawaii and was not previously known from Puerto Rico on either host. References: (1) C. Booth and W. P. Ting. Trans. Brit. Mycol. Soc. 47:235, 1964. (2) T. K. Lim and Y. Diczbalis. Rambutan. Page 306 in: The New Rural Industries. Online publication. Rural Industries Research and Development Corporation, Australia, 1997.

Matched MeSH terms: African Americans
Fulltext Effect of solid solution treatment on semisolid microstructure of Zn-22Al alloy

Arif, M.A.M., Omar, M.Z., Muhamad, N.

Pertanika Journal of Science & Technology, 2012;20(1):121-127.
MyJurnal

The effect of solid solution treatment on semisolid microstructure of Zn-22Al with developed dendrites was investigated. Zn-22Al is a zinc-based alloy with aluminium as its main alloying element. Producing Zn-22Al product by semisolid metal processing (SSM) offers significant advantages, such as reduction of macrosegregations, porosity and low forming efforts. Meanwhile, thermal and microstructure analyses of Zn-22Al alloy were studied using differential scanning calorimeter (DSC) and Olympus optical microscope. Solidus and liquidus of the alloy can be determined by DSC analysis. In addition, changes to the microstructures in response to solid solution treatments were also analyzed. The major effort of all the semi-solid technologies is the generation of small and spherical morphologies. Prior to the generation of spherical morphologies, the fine grains should be first produced. The as-cast samples were isothermally held at 315°C, ranging from 0.5 to 5 hours before they were partially re-melted at semisolid temperature of 438°C to produce solid globular grains structure in liquid matrix. The results indicated that a non-dendritic semisolid microstructure could not be obtained if the traditionally cast Zn-22Al alloy with developed dendrites was directly subjected to partial remelting. After solid solution treatment at 315°C, the black interdendritic eutectics were dissolved and gradually transformed into ß structure when the treatment time was increased. The microstructure of the solid solution treated sample changed into a small globular structure with the best shape factor of 0.9 and this corresponded to 40±16µm when the sample was treated for 3 hours, followed by directly partial remelting into its semi solid zone.

Matched MeSH terms: African Americans
Fulltext Dietary Patterns and Health Outcomes among African American Maintenance Hemodialysis Patients

Tallman DA, Latifi E, Kaur D, Sulaheen A, Ikizler TA, Chinna K, et al.

Nutrients, 2020 Mar 18;12(3).
PMID: 32197373 DOI: 10.3390/nu12030797

The association between dietary patterns and health outcomes, such as quality of life (QOL), in maintenance hemodialysis (MHD) patients with certain racial backgrounds has not been studied in detail. QOL is a powerful outcome measure in which dietary patterns could be a modifying factor. This study is a secondary analysis examining the association between dietary patterns and health outcomes in 101 African American (AA) maintenance hemodialysis (MHD) patients participating in the Palm Tocotrienols in Chronic Hemodialysis (PATCH) study. Quality of life (QOL) was assessed using the Kidney Disease Quality of Life 36-item survey (KDQOL-36™). Blood samples were analyzed for lipids, lipoprotein subfractions, and inflammatory markers. Food intake was measured using six non-consecutive 24-h dietary recalls over 15 months. Implausible energy intake reports were screened out by comparing reported energy intake (rEI) with predicted total energy expenditure (pTEE). Cluster analysis, using the k-means algorithm, identified two distinct dietary patterns in the study population: a high "sugar sweetened beverage" pattern (hiSSB) and a low "sugar sweetened beverage pattern" (loSSB). In the hiSSB group, consumption of SSB accounted for ~28% of energy intake, while SSB represented only 9% of energy intake in the loSSB group. The hiSSB group was characterized by a higher intake of total calories, sugar and percentage of kilocalories from carbohydrates, whereas the percentage of kilocalories from protein and fat was lower. While additional micronutrient intakes differed between groups (vitamin C, zinc, chromium), these were significantly lower than recommended values in the entire cohort. Patients in the hiSSB group presented with lower high-density lipoprotein cholesterol (HDL-C), lower large HDL particles and smaller low density lipoprotein (LDL) particle diameters. Antidepressant usage was significantly higher in the hiSSB group. Patients in the hiSSB group scored lower across all five KDQOL domains and scored significantly lower in the mental composite domain. MHD patients following a hiSSB dietary pattern had smaller dense LDL particles, lower HDL-C, and a lower QOL. Suboptimal intakes of fruits, vegetables, and grains as well as key micronutrients were evident in both patterns.

Matched MeSH terms: African Americans*
The promoter region of the MDR1 gene is largely invariant, but different single nucleotide polymorphism haplotypes affect MDR1 promoter activity differently in different cell lines

Wang B, Ngoi S, Wang J, Chong SS, Lee CG

Mol. Pharmacol., 2006 Jul;70(1):267-76.
PMID: 16608921

The MDR1 multidrug transporter represents one of the better characterized drug transporters that play an important role in protecting the body against xenobiotic insults. Single nucleotide polymorphisms (SNPs) and SNP haplotypes within this gene have been variously associated with differences in MDR1 expression/function, drug response as well as disease susceptibility. Nonetheless, the effect of polymorphisms at the MDR1 promoter region on its promoter activity remains less characterized. Through the examination of approximately 1.5 kilobases of MDR1 promoter region from five populations, including the Chinese, Malays, Indians, European Americans, and African Americans, we identified eight low-frequency SNPs, of which only two were polymorphic in at least four of the five populations examined. The other SNPs are mainly population-specific, the majority of which occur only in the African-American population. Recapitulation of the various combinations of SNP haplotypes in vitro in promoter-reporter assays revealed a few notable trends. The African and European American-specific haplotypes tended to result in enhanced MDR1 promoter activity only in the human embryonic kidney (HEK) 293 cell line. Haplotype GCTAACC, which occurs at variable frequencies in all the populations examined, with Asians having much lower frequencies (<2%) compared with the European Americans/African Americans (>4%), affected MDR1 promoter activity differently in different cell lines. Compared with the commonest haplotype, GCTA-ACC haplotype resulted in a significant decrease in MDR1 promoter activity in HeLa cells (P < 0.05) but a significant increase in the same promoter activity in HEK293 cells (P < 0.05). These results suggest that the MDR1 promoter region is largely invariant but that different haplotypes have differential effects on the MDR1 promoter activity in different cell lines.

Matched MeSH terms: African Americans/genetics
Fulltext The complete mitochondrial genome of Amyda cartilaginea (Testudines: Trionychidae)

Cui L, Rao D, Zhang M

Mitochondrial DNA B Resour, 2020 Nov 03;5(3):3670-3672.
PMID: 33367054 DOI: 10.1080/23802359.2020.1832595

The Asiatic softshell turtle, also known as the black-rayed softshell turtle (Amyda cartilaginea; Accession no: MT039230), is found in northeastern India (Mizoram), Brunei Darussalam, Indonesia, Malaysia, Singapore, Myanmar, Laos, Vietnam, Cambodia, and Thailand. This turtle is thought to have been introduced into the Sunda Islands, Sulawesi, and Yunnan, China, through the Malay Peninsula to Sumatra, Java, and Borneo. Herein, we determined the complete mitochondrial genome of A. cartilaginea for the first time using next-generation sequencing (NGS). The assembled mitogenome was 16,763 bp in length and encoded 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA genes (12S rRNA and 16S rRNA), and one control region (CR). The PCGs based maximum-likelihood phylogeny discriminated A. cartilaginea from other Testudines and clusters within family Trionychidae with the sister taxa of Nilssonia nigricans.

Matched MeSH terms: African Americans
Fulltext Complete mitochondrial genome of the black-winged fly, Felderimyia fuscipennis (Diptera: Tephritidae) and its phylogenetic relationship within family Tephritidae

Yang MJ, Liu JH, Wan XS, Zhang QL, Fu DY, Wang XB, et al.

Mitochondrial DNA B Resour, 2020 Oct 27;5(3):3638-3639.
PMID: 33367040 DOI: 10.1080/23802359.2020.1831984

The black-winged fly, Felderimyia fuscipennis (Diptera: Tephritidae), is an insect pest of bamboo shoot, mainly distributed in Thailand, Malaysia and Yunnan Province and Guangxi Autonomous Region, China. The complete sequence of the mitogenome of F. fuscipennis has been determined in this study. The whole mitogenome sequence is 16,536 bp in length, which totally contains 13 protein-coding genes (PCGs), 2 rRNA genes, 22 tRNA genes, and a non-coding region (putative control region, CR). The phylogeny indicates that F. fuscipennis of subfamily Trypetinae was monophyletic and clearly separated from both Dacinae and Tephritinae with high bootstrap value supported.

Matched MeSH terms: African Americans
Gametocytocidal and sporontocidal effects of primaquine upon two strains of Plasmodium falciparum

Rieckmann KH, McNamara JV, Kass L, Powell RD

Mil Med, 1969 Sep;134(10):802-19.
PMID: 4987059
Matched MeSH terms: African Americans
Microplastic pollution in tropical estuary gastropods: Abundance, distribution and potential sources of Klang River estuary, Malaysia

Zaki MRM, Zaid SHM, Zainuddin AH, Aris AZ

Mar Pollut Bull, 2021 Jan;162:111866.
PMID: 33256966 DOI: 10.1016/j.marpolbul.2020.111866

Microplastics receive global attention due to its strong presence in marine and freshwater organisms. Yet, there are few studies on estuarine organisms. This baseline study evaluates the abundance and distribution of microplastics in the gastropods of a tropical estuary in Selangor, Malaysia. The abundance of microplastics ranged from 0.50 to 1.75 particles/g or from 0.25 to 0.88 particles/individual. The variation in microplastic distribution between the upper and lower estuary indicates that the microplastics originated from the urbanised area of the Klang River estuary. Microplastic sizes varied from 30 to 1850 μm, with the majority being between 300 and 1000 μm (57%). Characteristics of microplastics were dominant for fibres (91%) with black colour (50%). Polyethylene-propylene-diene (PE-PDM) and polyester were the main polymer materials. Assessing the contamination of gastropods by microplastics provides insight into the possibility of utilising gastropods as bioindicators that could be used for monitoring and baseline studies.

Matched MeSH terms: African Americans

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