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Shwe S, Boo NY, Ong HK, Chee SC, Maslina M, Ling MMM, Ahluwalia AK. Haemoglobin Constant Spring (HbA2: c.427T>C) and Haemoglobin Adana (HbA2: c.179G>A) in jaundiced Malaysian term neonates with clinically significant hyperbilirubinemia. Malays J Pathol 2020; 42:253-257. [PMID: 32860378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Haemoglobin Constant Spring (Hb CoSp) and Haemoglobin Adana (Hb Adana), are two non-deletion type of α-thalassemia reported in Malaysia. Owing to their structural instability, they cause hemolysis and hyperbilirubinemia. This observational study was part of a large study investigating multiple factors associated with severe neonatal jaundice. In this part we aimed to determine the prevalence of Hb CoSp and Hb Adana and their association with clinically significant neonatal hyperbilirubinemia (SigNH, total serum bilirubin (TSB>290µmol/L)) among jaundiced Malaysian term neonates. MATERIALS AND METHODS The inclusion criteria were normal term-gestation neonates admitted consecutively for phototherapy. PCR-restriction fragment length polymorphism method was applied on DNA extracted from dry blood spot specimens of each neonate to detect for Hb CoSp and Hb Adana gene. Positive samples were verified by gene sequencing. RESULTS Of the 1121 neonates recruited (719 SigNH and 402 no-SigNH), heterozygous Hb CoSp gene was detected in only two (0.27%) neonates. Both were SigNH neonates (0.3% or 2/719). No neonate had Hb Adana variant. CONCLUSION Hb CoSp was not common but could be a risk factor associated with SigNH. No Hb Adana was detected.
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Affiliation(s)
- S Shwe
- Universiti Tunku Abdul Rahman (UTAR), Faculty of Medicine and Health Sciences, Kajang, Malaysia.
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Abstract
There is limited information about the benefits of pulmonary rehabilitation (PR) in patients with bronchiectasis. This study aimed to evaluate the effects of an out-patient PR program in patients with a primary diagnosis of bronchiectasis and to compare them with a matched COPD group who completed the same PR program. A retrospective review was conducted of patients with bronchiectasis or COPD who completed 6 to 8 weeks of PR at two tertiary institutions. The outcome measures were the 6-minute walk distance (6MWD) and Chronic Respiratory Disease Questionnaire (CRQ). Ninety-five patients with bronchiectasis completed the PR (48 male; FEV1 63 [24] % predicted; age 67 [10] years). Significant improvements in 6MWD (mean change 53.4 m, 95% CI 45.0 to 61.7) and CRQ total score (mean change 14.0 units, 95% CI 11.3 to 16.7) were observed immediately following PR. In patients with complete follow-up (n = 37), these improvements remained significantly higher than baseline at 12 months (20.5 m, 95% CI 1.4 to 39.5 for 6MWD; 12.1 points, 95% CI 5.7 to 18.4 for CRQ total score). The time trend and changes in the 6MWD and CRQ scores were not significantly different between the bronchiectasis and the COPD groups (all p > 0.05). This study supports the inclusion of patients with bronchiectasis in existing PR programs. Further prospective RCTs are warranted to substantiate these findings.
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Affiliation(s)
- HK Ong
- Physiotherapy, Melbourne School of Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia, Department of Physiotherapy, Singapore General Hospital, 169608 Singapore
| | - AL Lee
- Physiotherapy, Melbourne School of Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia, Department of Physiotherapy, Alfred Health, Commercial Road, Melbourne, Victoria, Australia, Institute for Breathing and Sleep, Austin Health, Heidelberg, 3084, Victoria, Australia
| | - CJ Hill
- Institute for Breathing and Sleep, Austin Health, Heidelberg, 3084, Victoria, Australia, Department of Physiotherapy, Austin Heath, Heidelberg, 3084, Victoria, Australia
| | - AE Holland
- Department of Physiotherapy, Alfred Health, Commercial Road, Melbourne, Victoria, Australia, Institute for Breathing and Sleep, Austin Health, Heidelberg, 3084, Victoria, Australia, School of Physiotherapy, La Trobe University, Bundoora, 3086 Victoria, Australia
| | - L Denehy
- Physiotherapy, Melbourne School of Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia,
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Abstract
The benefits and extent of mixing required during biomethanation of cattle-manure slurry was studied by investigating the effect of: 1) continuous and intermittent mixing, 2) agitator impeller speed and position; 3) not providing assisted mixing; 4) mixing on production of extracellular polymeric substances; and 5) mixing on the ultimate anaerobic biodegradability. Biomethanation was not adversely affected: during intermittent mixing; or when only sufficient mixing was provided to maintain off-bottom suspension of digester contents; or by doubling impeller speed. In fact continuous digestion of cattle-manure slurry without mechanical stirring was superior in terms of gas production. This can be attributed to increased loss of active volatile solids during stirring. Moreover, long-term batch digestion studies showed that the rate of biomethanation in a continuously stirred digester was inferior to that of a non-stirred one. Mixing was found to decrease production of extracellular polymeric substances (EPS). The presence of an increased level of EPS during the quiescent state could indicate increased attachment of cells to each other, resulting in larger agglomerates with better settling properties thus increasing biomass retention time.
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Affiliation(s)
- H K Ong
- Advanced Wastewater Management Centre, The University of Queensland, St. Lucia, Brisbane, Qld 4072, Australia
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Tung CM, Liang JB, Tan SL, Ong HK, Jelan ZA. Fodder Productivity and Growth Persistency of Three Local Cassava Varieties. Asian Australas J Anim Sci 2001. [DOI: 10.5713/ajas.2001.1253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ong HK, Pullammanappallil PC, Greenfield PF. Physical, Chemical and Biomethanation Characteristics of Stratified Cattle-Manure Slurry. Asian Australas J Anim Sci 2000. [DOI: 10.5713/ajas.2000.1593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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