Displaying publications 181 - 200 of 266 in total

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  1. Mok PL, Cheong SK, Leong CF, Chua KH, Ainoon O
    Tissue Cell, 2012 Aug;44(4):249-56.
    PMID: 22560724 DOI: 10.1016/j.tice.2012.04.002
    Mesenchymal stromal cells (MSC) are an attractive cell-targeting vehicle for gene delivery. MIDGE (an acronym for Minimalistic, Immunologically Defined Gene Expression) construct is relatively safer than the viral or plasmid expression system as the detrimental eukaryotic and prokaryotic gene and sequences have been eliminated. The objective of this study was to test the ability of the human MSC (hMSC) to deliver the erythropoietin (EPO) gene in a nude mice model following nucleofection using a MIDGE construct. hMSC nucleofected with MIDGE encoding the EPO gene was injected subcutaneously in Matrigel at the dorsal flank of nude mice. Subcutaneous implantation of nucleofected hMSC resulted in increased hemoglobin level with presence of human EPO in the peripheral blood of the injected nude mice in the first two weeks post-implantation compared with the control groups. The basal layer of the hair shaft in the dermal layer was found to be significantly positive for immunohistochemical staining of a human EPO antibody. However, only a few basal layers of the hair shaft were found to be positively stained for CD105. In conclusion, hMSC harboring MIDGE-EPO could deliver and transiently express the EPO gene in the nude mice model. These cells could be localized to the hair follicle and secreted EPO protein might have possible role in hair regeneration.
    Matched MeSH terms: Hemoglobins/metabolism
  2. Sagara I, Dicko A, Ellis RD, Fay MP, Diawara SI, Assadou MH, et al.
    Vaccine, 2009 May 18;27(23):3090-8.
    PMID: 19428923 DOI: 10.1016/j.vaccine.2009.03.014
    A double blind, randomized, controlled Phase 2 clinical trial was conducted to assess the safety, immunogenicity, and biologic impact of the vaccine candidate Apical Membrane Antigen 1-Combination 1 (AMA1-C1), adjuvanted with Alhydrogel. Participants were healthy children 2-3 years old living in or near the village of Bancoumana, Mali. A total of 300 children received either the study vaccine or the comparator. No impact of vaccination was seen on the primary endpoint, the frequency of parasitemia measured as episodes >3000/microL/day at risk. There was a negative impact of vaccination on the hemoglobin level during clinical malaria, and mean incidence of hemoglobin <8.5 g/dL, in the direction of lower hemoglobin in the children who received AMA1-C1, although these differences were not significant after correction for multiple tests. These differences were not seen in the second year of transmission.
    Matched MeSH terms: Hemoglobins/analysis
  3. Al-Mekhlafi MH, Surin J, Atiya AS, Ariffin WA, Mahdy AK, Abdullah HC
    Trans R Soc Trop Med Hyg, 2008 Oct;102(10):1046-52.
    PMID: 18617209 DOI: 10.1016/j.trstmh.2008.05.012
    A cross-sectional study to determine the current prevalence of anaemia and iron deficiency anaemia (IDA) and to investigate the possible risk factors for IDA was carried out on 241 aboriginal schoolchildren (120 boys, 121 girls) aged 7-12 years and living in remote areas in Pos Betau, Pahang, Malaysia. Haemoglobin (Hb) level was measured and serum iron status was assessed by serum ferritin (SF), serum iron (SI) and total iron binding capacity measurements. Socioeconomic data were collected using pre-tested questionnaires. All children were screened for intestinal parasitic infections. Overall, 48.5% (95% CI 42.3-54.8) of children were anaemic (Hb<12 g/dl). The prevalence of IDA was 34% (95% CI 28.3-40.2), which accounted for 70.1% of the anaemia cases. The prevalence of IDA was significantly higher in females than males. Low levels of mothers' education and low household income were identified as risk factors for IDA. Severe trichuriasis also found to be associated with low SF and SI. Logistic regression confirmed low levels of mothers' education and gender as significant risk factors for IDA. Improvement of socioeconomic status and health education together with periodic mass deworming should be included in public health strategies for the control and prevention of anaemia and IDA in this population.
    Matched MeSH terms: Hemoglobins/analysis*
  4. Goh BL, Ong LM, Sivanandam S, Lim TO, Morad Z, Biogeneric EPO Study Group
    Nephrology (Carlton), 2007 Oct;12(5):431-6.
    PMID: 17803464
    Treatment of renal anaemia with epoetin is well established. However, epoetin is expensive. Biogeneric epoetin with proven efficacy would reduce cost and improve access to therapy. We conducted this first ever comparative study of a biogeneric and the original product.
    Matched MeSH terms: Hemoglobins/metabolism*
  5. Rajasekaran T, Tan T, Ong WS, Koo KN, Chan L, Poon D, et al.
    J Geriatr Oncol, 2016 05;7(3):211-8.
    PMID: 27067580 DOI: 10.1016/j.jgo.2016.03.003
    OBJECTIVE: This study aims to identify Comprehensive Geriatric Assessment (CGA) based risk factors to help predict caregiver burden among elderly patients with cancer.

    MATERIALS AND METHOD: The study evaluated 249 patients newly diagnosed with cancer, aged 70years and above, who attended the geriatric oncology clinic at the National Cancer Centre Singapore between 2007 and 2010.

    RESULTS: Out of 249 patients, 244 patients had information available on family caregiver burden and were analysed. On univariate analysis, ADL dependence, lower IADL scores, ECOG performance status of 3-4, higher fall risk, lower scores in dominant hand grip strength test and mini mental state examination, polypharmacy, higher nutritional risk, haemoglobin <12g/dL and presence of geriatric syndromes were significantly associated with mild to severe caregiver burden. On multivariate analysis, only ECOG performance status of 3-4 (odds ratio [OR], 4.47; 95% confidence interval [CI], 2.27-8.80) and haemoglobin <12g/dL (OR, 2.38; 95% CI, 1.14-4.99) were associated with an increased probability of mild to severe caregiver burden. The model achieved a good fit (Hosmer-Lemeshow's p=0.196) and discrimination (area under the curve [AUC]=0.742; bias-corrected AUC=0.737). Based on this, patients were stratified into 3 risk groups with different proportion of patients with increased caregiver burden (low risk: 3.9% vs intermediate risk: 18.8% vs high risk: 39.6%; p<0.001).

    CONCLUSION: ECOG performance status and haemoglobin were associated with increased caregiver burden among elderly patients with cancer. Using these two factors in the clinic may help clinicians identify caregivers at risk and take preventive action to mitigate that.
    Matched MeSH terms: Hemoglobins/metabolism
  6. Mohamed MI, Mohammad MK, Abdul Razak HR, Abdul Razak K, Saad WM
    Biomed Res Int, 2015;2015:183525.
    PMID: 26075217 DOI: 10.1155/2015/183525
    Emerging syntheses and findings of new metallic nanoparticles (MNPs) have become an important aspect in various fields including diagnostic imaging. To date, iodine has been utilized as a radiographic contrast medium. However, the raise concern of iodine threats on iodine-intolerance patient has led to search of new contrast media with lower toxic level. In this animal modeling study, 14 nm iron oxide nanoparticles (IONPs) with silane-polyethylene glycol (SiPEG) and perchloric acid have been assessed for toxicity level as compared to conventional iodine. The nanotoxicity of IONPs was evaluated in liver biochemistry, reactive oxygen species production (ROS), lipid peroxidation mechanism, and ultrastructural evaluation using transmission electron microscope (TEM). The hematological analysis and liver function test (LFT) revealed that most of the liver enzymes were significantly higher in iodine-administered group as compared to those in normal and IONPs groups (P < 0.05). ROS production assay and lipid peroxidation indicator, malondialdehyde (MDA), also showed significant reductions in comparison with iodine group (P < 0.05). TEM evaluation yielded the aberration of nucleus structure of iodine-administered group as compared to those in control and IONPs groups. This study has demonstrated the less toxic properties of IONPs and it may postulate that IONPs are safe to be applied as radiographic contrast medium.
    Matched MeSH terms: Hemoglobins/metabolism
  7. Ng SM, Lin HP, Ariffin WA, Zainab AK, Lam SK, Chan LL
    J Trop Pediatr, 2000 Dec;46(6):338-43.
    PMID: 11191144
    The presenting features and treatment outcome for 575 Malaysian children (< or = 12 years of age) with newly diagnosed acute lymphoblastic leukemia (ALL), admitted to the University Hospital, Kuala Lumpur, Malaysia between 1 January 1980 and 30 May 1995 were evaluated to determine their prognostic significance. Two-year overall survival was achieved in 67 per cent of all patients and 55 per cent of patients were relapse-free at 2 years. All except 10 patients, with identified French-American-British L3 morphology were treated with the modified Berlin-Frankfurt-Munster 78 treatment protocol. Univariate analyses of failure rate conferred age, sex, white cell count and hemoglobin level as potentially significant prognostic factors. All four presenting features retained their prognostic strength in a multivariate analysis. Race, platelet count, morphological subtype, liver/spleen size, lymphadenopathy, central nervous system and mediastinal mass involvement did not show any significant effect on treatment outcome. The 2-year survival rate was significantly different with regard to age, white cell count and hemoglobin level. However, sex was not significantly related to overall survival. These prognostic factors may have implications on future stratification of risk-adjusted initial treatment in the management of childhood ALL. Our analysis of Malaysian children is similar to what could be predicted based on previous studies in other populations.
    Matched MeSH terms: Hemoglobins/analysis*
  8. Jackson N, Reddy SC, Hishamuddin M, Low HC
    Clin Lab Haematol, 1996 Jun;18(2):105-9.
    PMID: 8866143
    The associations between retinal findings and haematological parameters in acute leukaemia are controversial. Sixty-three newly-diagnosed acute leukaemia patients, aged 12-77 years, were studied prospectively for the presence of intra-retinal haemorrhages (IRH), white-centred haemorrhages (WCH), cotton wool spots (CWS) and macular haemorrhages (MH), Thirty-three patients (52.4%) showed at least one retinal abnormality. The prevalence of individual findings was: IRH (30 cases), WCH (20 cases), CWS (5 cases), MH (11 cases). In contrast to previous studies, there was no association between any of these retinal findings and the haemoglobin level or the platelet count. There was a higher median WBC in patients with IRH (68 x 10(9)/l) than in those without IRH (15.4 x 10(9)/l), P = 0.037. When the acute myeloblastic leukaemia cases were considered separately, an association was also found between higher WBC and the presence of WCH and CWS. There was no association between retinal findings and FAB type in the AML cases. We conclude that a high WBC may be at least as important as anaemia and thrombocytopenia in the pathogenesis of the retinopathy of acute leukaemia.
    Matched MeSH terms: Hemoglobins/analysis
  9. Foo LC, Rekhraj V, Chiang GL, Mak JW
    Am J Trop Med Hyg, 1992 Sep;47(3):271-5.
    PMID: 1524139
    The malaria parasite rates and densities were compared in 79 ovalocytic-normocytic pairs of Malayan Aborigines matched for age, sex, proximity of residence to each other, and use of bed nets when sleeping in their jungle settlement in central Peninsular Malaysia. Malaria infection was determined from thick and thin Giemsa-stained blood films collected monthly for a period of six months. Blood films from ovalocytic individuals were found to be positive for malaria less often than in persons with normal red blood cells (P less than 0.05). Malaria infections per 100 person-months at risk were 9.7 in the ovalocytic group compared with 15.19 in the normocytic group. Among individuals parasitemic at any time, heavy infections (greater than or equal to 10,000 parasites/mm3 of blood) with Plasmodium falciparum, P. vivax, and P. malariae were encountered only in normocytic subjects, which comprised approximately 12.5% of the malaria-positive individuals in this group. In an earlier survey of 629 settlers that identified subjects for the above study, the prevalence of ovalocytosis was found to increase significantly with age. The above field observations support the view that ovalocytic individuals might have a survival advantage in the face of malaria. Consideration of the ovalocytic factor is indicated in future evaluations of malaria control measures in areas where ovalocytosis is prevalent.
    Matched MeSH terms: Hemoglobins/analysis
  10. Tan JA, Tan KL, Omar KZ, Chan LL, Wee YC, George E
    Eur J Pediatr, 2009 Sep;168(9):1049-54.
    PMID: 19034506 DOI: 10.1007/s00431-008-0877-9
    INTRODUCTION: Interactions of different hemoglobin variants with thalassemia alleles can result in various clinical phenotypes. HbE-beta-thalassemia generally manifests with severe anemia where individuals exhibit beta-thalassemia major with regular blood transfusions or beta-thalassemia intermedia with periodic blood transfusions. This study presents a unique Malay family with three beta-globin gene defects-HbE, Hb South Florida, and IVS1-1 (G-->A).

    MATERIALS AND METHODS: HbE activates a cryptic splice site that produces non-functional mRNAs. Hb South Florida is a rare beta-hemoglobin variant, and its interactions with other beta-thalassemia alleles have not been reported. IVS1-1 is a Mediterranean mutation that affects mRNA processing giving rise to beta(o)-thalassemia.

    RESULTS AND DISCUSSION: Fifteen mutations along the beta-globin gene complex were analyzed using the amplification refractory mutation system. Hb South Florida was identified by direct sequencing using genomic DNA.

    CONCLUSION: The affected child with HbE/IVS1-1 produced a beta-thalassemia major phenotype. Compound heterozygosity for Hb South Florida/IVS1-1 produced a beta-thalassemia carrier phenotype in the mother.

    Matched MeSH terms: Hemoglobins, Abnormal/genetics*
  11. Kagaya W, Gitaka J, Chan CW, Kongere J, Md Idris Z, Deng C, et al.
    Sci Rep, 2019 12 13;9(1):19060.
    PMID: 31836757 DOI: 10.1038/s41598-019-55437-8
    Although WHO recommends mass drug administration (MDA) for malaria elimination, further evidence is required for understanding the obstacles for the optimum implementation of MDA. Just before the long rain in 2016, two rounds of MDA with artemisinin/piperaquine (Artequick) and low-dose primaquine were conducted with a 35-day interval for the entire population of Ngodhe Island (~500 inhabitants) in Lake Victoria, Kenya, which is surrounded by areas with moderate and high transmission. With approximately 90% compliance, Plasmodium prevalence decreased from 3% to 0% by microscopy and from 10% to 2% by PCR. However, prevalence rebounded to 9% by PCR two months after conclusion of MDA. Besides the remained local transmission, parasite importation caused by human movement likely contributed to the resurgence. Analyses of 419 arrivals to Ngodhe between July 2016 and September 2017 revealed Plasmodium prevalence of 4.6% and 16.0% by microscopy and PCR, respectively. Risk factors for infection among arrivals included age (0 to 5 and 11 to 15 years), and travelers from Siaya County, located to the north of Ngodhe Island. Parasite importation caused by human movement is one of major obstacles to sustain malaria elimination, suggesting the importance of cross-regional initiatives together with local vector control.
    Matched MeSH terms: Hemoglobins/metabolism
  12. Lie-Injo LE, Hassan K, Joishy SK, Lim ML
    Am J Hematol, 1986 Jul;22(3):265-74.
    PMID: 2424302
    The Indian rubber estate workers in Negri Sembilan, Malaysia, who originated from Orissa in India were found to have a high frequency of Hb S (Joishy SK, Hassan K: Clin Res 28:280, 1980). Unlike the usually severe clinical picture of sickle cell anemia seen in African and American blacks, the clinical picture of the disease in this population was mild and many have reached old age. We studied the leukocyte DNA of 12 patients with sickle cell anemia, ranging in age from 4 to 61 years and 30 sickle cell trait carriers, ranging in age from 7 to 63 years, for the presence of alpha-globin gene deletions by gene mapping according to Southern (Southern EM: J Mol Biol 98:503, 1975), using alpha- and zeta-globin gene probes obtained by nick translation of the alpha- and zeta-globin genes cloned into plasmid. All 12 sickle cell anemia patients were found to have alpha-thalassemia2 (alpha-thal2), either in the homozygous or heterozygous condition. Of the Hb S trait carriers, six did not have alpha-thal2 or alpha-thal1 and 24 had alpha-thal2 (15 heterozygous, 9 homozygous). Seven of these Hb S trait carriers with alpha-thal2 had an additional gene abnormality. Five of them had a fast-moving Eco RI fragment 5.6 kb long that hybridized with zeta-specific probe but not with alpha-specific probe. An unusual DNA pattern of a different type was further found in the other two. Bgl II restriction analysis showed that the alpha-thal2 was mostly of the rightward deletion alpha-thal1 genotype. None of the sickle cell anemia patients and Hb S trait carriers had deletion type alpha-thal1. The sickle cell anemia patients had very high levels of Hb F and low levels of Hb A2. The Hb S trait carriers with alpha-thal2 had relatively low levels of Hb S.
    Matched MeSH terms: Hemoglobins/metabolism
  13. Muslim A, Lim YA, Mohd Sofian S, Shaari SA, Mohd Zain Z
    PLoS One, 2021;16(1):e0245377.
    PMID: 33439889 DOI: 10.1371/journal.pone.0245377
    This study compared the current nutritional status, hemoglobin levels and their associations with soil-transmitted helminth (STH) infections between two categories of Negritos (indigenous): (i) Inland Jungle Villages (IJV) (ii) and Resettlement Plan Scheme (RPS) near town peripheries, decades after redevelopment and demarginalization. A total of 416 Negritos (IJV: 149; RPS: 267) was included for nutritional profiling based on anthropometric analysis. However, only 196 (IJV: 64; RPS: 132) individuals consented to blood taking for the hemoglobin (Hb) measurements. Subsequently, the association of undernutrition and anemia with STH infections were determined based on univariate and multivariate logistic regression analyses. The overall prevalence of stunting, wasting, and underweight amongst children and adolescents (n = 343) were 45.8%, 42.3% and 59.1%, respectively. In adults (n = 73), the prevalence of underweight was low (6.8%) but overweight and obese was prominent (26.0%). For anemia (n = 196), an overall prevalence rate of 68.4% were observed with 80% and 70.4% of children aged 2-6 y/o and aged 7-12 y/o, respectively being anemic. Comparatively, the prevalence of underweight (WAZ) was significantly higher in the RPS versus the IJV (P = 0.03) In the IJV, children aged ≤ 6 y/o and having STH poly-parasitism were associated with underweight (P = 0.01) and moderate-severe T. trichiura infection was associated with anemia. Whilst in the RPS, underweight was highly associated with only T. trichiura infection (P = 0.04). Wasting was significantly associated with young children aged ≤10 in both IJV (P = 0.004) and RPS (P = 0.02). Despite efforts in improving provision of facilities and amenities among the indigenous, this study highlighted a high magnitude of nutritional issues among the Negritos especially those in the RPS and their likely association with STH infections and decades of demarginalization. Joint nutritional intervention strategies with mass anti-helminthic treatment are imperative and urgently needed to reduce the undernutrition problems especially among indigenous children.
    Matched MeSH terms: Hemoglobins/analysis*
  14. Tai KS, Das Gupta E
    Aust J Gen Pract, 2018 08;47(8):535-536.
    PMID: 30114881
    Matched MeSH terms: Hemoglobins/analysis
  15. Strickland SS, Duffield AE
    Ann Hum Biol, 1997 Sep-Oct;24(5):453-74.
    PMID: 9300122
    The areca nut is chewed by many of the world's population, mainly in South and Southeast Asia. Anthropometric data for 458 Sarawaki adults aged over 24 years, measured both in 1990 and in 1996, were examined in relation to use of tobacco and areca nut. Compared to non-smokers, smoking men were significantly taller and slightly (not significantly) thinner in both years, while smoking women were thinner in 1990 and slightly (not significantly) thinner in 1996. In both sexes there was an increase in the mean and range of body mass index (BMI, W/H2) over the 6-year interval. Smoking women showed a significantly smaller increment in BMI after allowing for areca nut use, which was associated with a similar trend, and this finding depended on including areca use in the model. The trend for men was similar. Possible effects of areca use could reflect variation in 'affluence' or conservatism, or appetite suppression. However, resting metabolic rate in 54 men and 70 women aged 24-60 years was associated with areca use. This association appeared to be mediated by the maximum room temperature of the 24 h preceding measurement. In women, a significant curvilinear association of RMR with maximum temperature was found in users of areca nut but not in non-users. In men, RMR was 7% higher (p < 0.05) in users of areca nut than in non-users, after allowing for age, height, weight, the sum of four skinfold thicknesses, and haemoglobin, but the association with maximum temperature was similar in both groups. It is speculated that constituents of areca nut modulate thermoregulatory pathways, resulting in prolonged temperature-dependent and hyperthermic heat production in this population; that males are more responsive to this effect than females; and that by this mechanism, and possibly also through centrally mediated effects on appetite for food, areca use could contribute to long-term variation in energy balance represented by change in BMI.
    Matched MeSH terms: Hemoglobins/analysis
  16. Abu MA, Borhan AS, Abdul Karim AK, Ahmad MF, Mahdy ZA
    Horm Mol Biol Clin Investig, 2020 Dec 14;42(1):49-56.
    PMID: 33781008 DOI: 10.1515/hmbci-2020-0034
    OBJECTIVES: To compare the effect of Iberet Folic® and Zincofer® on haemoglobin (Hb) and serum ferritin level; and its adverse effect.

    METHODS: This randomised controlled trial conducted from January 2018 until December 2018. Pregnant women below 34 weeks of gestation, with Hb concentration less than 11 g/dL and serum ferritin level less than 12 ug/L were randomised to receive either one tablet Zincofer® or one tablet Iberet Folate® daily for four weeks. Both groups were compared in terms of effect on Hb level, serum ferritin level, and other haematological indices adverse effect related to treatment, and treatment cost.

    RESULTS: Hundred and thirty patients were recruited in this study with 68 patients in Iberet Folic group and 62 patients in Zincofer group. The change in the Hb and serum ferritin level from baseline to day 30 did not differ significantly between treatment groups. The mean (±SD) change from baseline to day 30 was 2.15 (±0.59) g/dL in the Iberet Folic group, and 1.98 (±0.49) in the Zincofer (p value = 0.08). Mean serum ferritin at day 30 was 17.2 (±3.68) ug/L and 16.7 (±4.28) ug/L with 8.44 (±3.41) and 8.55 (±3.50) difference, respectively (p = 0.86). Adverse events were comparable in between groups, with p value >0.05. GI intolerance and constipation were among the common side effects, occurred in 34.6 and 29.2% cases, respectively.

    CONCLUSIONS: Zincofer® offers equivalent efficacy and side effect profile in comparison with Iberet Folic® for the treatment of iron deficiency anaemia (IDA) during pregnancy, but with lower cost.

    Matched MeSH terms: Hemoglobins/analysis
  17. Susanto TAK, Bhattacharyya R
    J Pediatr Hematol Oncol, 2017 Jul;39(5):408-409.
    PMID: 28644307 DOI: 10.1097/MPH.0000000000000814
    Dimorphism in peripheral blood film was noted in a 16 year old Malay boy with anemia who was eventually diagnosed with X-linked sideroblastic anemia. A mutation in ALAS2 S568G was identified which has not been described previously in a Malay ethnic group.
    Matched MeSH terms: Hemoglobins/analysis
  18. Lie-Injo LE, Ng T, Balakrishnan S
    Clin Chim Acta, 1974 Jan 19;50(1):77-83.
    PMID: 4856203 DOI: 10.1016/0009-8981(74)90079-5
    Matched MeSH terms: Hemoglobins/analysis
  19. Paul FM
    Singapore Med J, 1974 Dec;15(4):231-40.
    PMID: 4458066
    Ninety-six cases of severe malnutrition and associated nutritional disorders were encountered in children in the department of paediatrics for the year 1971. The predominant age group was in children under the age of two years. Malay and Indian children were affected more than the Chinese children with malnutrition. Protein caloric malnutrition had already affected the growth pattern of these children as the majority were below the 50th percentile in height and weight comparing them with Hong Kong childrens’ height and weight standards. Seventy-five per cent of the children presented with infection. Fifty-four per cent of the families with malnutrition had three to six children and in two thirds of the families the income was from $100/- to $249/- per month. Forty per cent of the children lived in the kampong type of houses with no proper sanitation. Worm infestation was common in this group. The mean haemoglobin, serum iron levels, and serum folic acid levels were lower in the Indians and Malays. Protein caloric malnutrition must be treated early because of its irreversible effects on brain and bone growth. It is recommended that some form of allowance either in the form of food or money be given to these children from poor social-economic background.
    Matched MeSH terms: Hemoglobins/analysis
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