Browse publications by year: 1998

  1. Sharma HS, Kurl DN, Hamzah M
    Auris Nasus Larynx, 1998 Dec;25(4):403-6.
    PMID: 9853664
    Retropharyngeal abscess (RPA) is relatively rare today. A study of 17 cases of RPA treated at our hospital in the past 10 years showed a shift in the disease from children below 6 years of age (41%) to older children and adults (58%). Upper respiratory tract infection (URTI) was found to be the commonest (52%) aetiological predisposing factor in all age groups. Other aetiological factors were septicaemia (11%) in children below the age of 6 years and trauma due to foreign body (35%) in the older children and adult age groups. Klebsiella, Staphylococcus and Streptococcus were the commonest species of microorganisms grown from pus. The changing clinical trends, microbiology, choice of antibiotics, usefulness of radiology, and complications of this potentially fatal illness are discussed.
    MeSH terms: Adolescent; Adult; Anti-Bacterial Agents/therapeutic use; Bacterial Infections/complications; Child; Drug Resistance, Microbial; Female; Foreign Bodies/complications; Hospitals, University; Humans; Malaysia; Male; Microbial Sensitivity Tests; Radiography; Respiratory Tract Infections/complications; Retrospective Studies; Causality; Age Distribution; Retropharyngeal Abscess/drug therapy; Retropharyngeal Abscess/etiology*; Retropharyngeal Abscess/microbiology; Sepsis/complications
  2. Lee BW
    Trop Med Int Health, 1998 Nov;3(11):886-90.
    PMID: 9855401
    Varicella zoster virus (VZV) predominantly affects children in temperate countries, with near-universal seroconversion occurring by late childhood. However, in tropical regions, VZV infection is common in adolescents and adults. This review identifies age-related VZV seroprevalence patterns in a number of Asian countries which indicate that seroconversion in tropical countries occurs at a later age than in temperate countries. Seasonal and regional variations in acute disease within some Asian countries suggest that temperate climates might favour transmission of the varicella virus, with incidence peaking during cooler months and in cooler, more temperate regions. VZV infection is often more severe in adults than in children, suggesting that tropical countries may be at risk of greater morbidity and mortality as a result of later-age seroconversion. Susceptibility of pregnant women and their infants, and of people infected with HIV/AIDS is also cause for concern. Vaccination may be beneficial in reducing the impact of VZV in Asian populations.
    MeSH terms: Adolescent; Adult; Age Factors; Chickenpox/epidemiology*; Child; Humans; India/epidemiology; Malaysia/epidemiology; Middle Aged; Philippines/epidemiology; Thailand/epidemiology; Incidence; Seroepidemiologic Studies
  3. Singh B, Choo KE, Ibrahim J, Johnston W, Davis TM
    Trans R Soc Trop Med Hyg, 1998 12 23;92(5):532-7.
    PMID: 9861371
    To determine whether glucose turnover is increased in acute falciparum malaria compared to enteric fever in children, steady-state 6,6-D2-glucose turnover was measured in 9 Malaysian children with uncomplicated malaria (6 males and 3 females; median age 10 years, body weight 22 kg) and in 12 with uncomplicated enteric fever (8 males and 4 females; median age 10 years, body weight 24 kg) in acute illness, after quinine (5 malaria patients) and in convalescence. Baseline plasma glucose concentrations in malaria and enteric fever were similar (all values are medians [ranges in brackets]) 5.6 [3.2-11.3] vs. 5.5 [4.2-8.0] mmol/L), as were serum insulin levels (5.6 [0.4-26.5] vs. 6.8 [1.1-22.5] milliunits/L; P > 0.4). Glucose turnover in the malaria patients was higher than in patients with enteric fever (6.27 [2.71-6.87] vs. 5.20 [4.50-6.08] mg/kg.min; P = 0.02) and in convalescence (4.74 [3.35-6.79] mg/kg.min; P = 0.05 vs. acute malaria study), and fell after quinine together with a rise in serum insulin (P = 0.03). Basal plasma lactate concentrations were higher in enteric fever than in malaria (3.4 [1.8-6.4] vs. 0.8 [0.3-3.8] mmol/L; P < 0.0001) and correlated inversely with glucose turnover in this group (rs = -0.60; n = 12; P = 0.02). These data suggest that glucose turnover is 20% greater in malaria than in enteric fever. This might reflect increased non-insulin-mediated glucose uptake in falciparum malaria and/or impaired gluconeogenesis in enteric fever, and may have implications for metabolic complications and their clinical management in both infections.
    MeSH terms: Adolescent; Anti-Bacterial Agents/therapeutic use; Antimalarials/therapeutic use; Child; Female; Glucose/metabolism*; Humans; Hypoglycemia/etiology; Insulin/metabolism; Lactates/metabolism; Lactates/therapeutic use; Malaysia; Male; Quinine/metabolism; Quinine/therapeutic use; Typhoid Fever/metabolism*; Malaria, Falciparum/metabolism*
  4. Rosfarizan M, Ariff AB, Hassan MA, Karim MI
    Folia Microbiol (Praha), 1998;43(5):459-64.
    PMID: 9867479
    Direct conversion of gelatinized sago starch into kojic acid by Aspergillus flavus strain having amylolytic enzymes was carried out at two different scales of submerged batch fermentation in a 250-mL shake flask and in a 50-L stirred-tank fermentor. For comparison, fermentations were also carried out using glucose and glucose hydrolyzate from enzymic hydrolysis of sago starch as carbon sources. During kojic acid fermentation of starch, starch was first hydrolyzed to glucose by the action of alpha-amylase and glucoamylase during active growth phase. The glucose remaining during the production phase (non-growing phase) was then converted to kojic acid. Kojic acid production (23.5 g/L) using 100 g/L sago starch in a shake flask was comparable to fermentation of glucose (31.5 g/L) and glucose hydrolyzate (27.9 g/L) but in the 50-L fermentor was greatly reduced due to non-optimal aeration conditions. Kojic acid production using glucose was higher in the 50-L fermentor than in the shake flask.
    MeSH terms: alpha-Amylases/metabolism; Aspergillus flavus/growth & development; Aspergillus flavus/metabolism*; Glucan 1,4-alpha-Glucosidase/metabolism; Fermentation; Glucose/metabolism; Hydrolysis; Mycotoxins/biosynthesis*; Pyrones/metabolism*; Starch/metabolism*
  5. Ang HH, Sim MK
    Arch Pharm Res, 1998 Dec;21(6):779-81.
    PMID: 9868556 DOI: 10.1007/BF02976776
    The aim of this study is to provide evidence on the aphrodisiac property of Eurycoma longifolia Jack. An electric grid was used as an obstruction in the electrical copulation cage in order to determine how much an aversive stimulus the sexually naive male rat for both the treated with E. longifolia Jack and control groups were willing to overcome to reach the estrous receptive female in the goal cage. The intensity of the grid current was maintained at 0.12 mA and this was the intensity in which the male rats in the control group failed to crossover to reach the goal cage. Results showed that E. longifolia Jack continued to enhance and also maintain a high level of both the total number of successful crossovers, mountings, intromissions and ejaculations during the 9-12th week observation period. In conclusion, these results further enhanced and strengthened the aphrodisiac property of E. longifolia Jack.
    MeSH terms: Animals; Aphrodisiacs/pharmacology*; Female; Male; Plant Extracts/pharmacology*; Sexual Behavior, Animal/drug effects*; Rats, Sprague-Dawley; Rats
  6. Quah BS, Indudharan R, Hashim I, Simpson H
    J Pediatr Surg, 1998 Dec;33(12):1817-9.
    PMID: 9869060
    Tracheoesophageal fistula (TEF) without atresia is rare and usually presents with symptoms from birth. In this report, a 9-year-old boy presented with productive cough of 4 month's duration and was shown to have a right lung abscess seen on chest radiograph. His parents denied earlier respiratory symptoms or illnesses. Rigid bronchoscopy showed a fistulous opening of about 1 mm in diameter in the posterior wall of the trachea about 16 cm from the upper incisor teeth. Cannulation with a ureteral catheter demonstrated that the fistulous opening communicated with the esophageal lumen. The tracheoesophageal fistula was 1 cm long and was divided through a right supraclavicular incision. The postoperative period was uneventful, and the patient was discharged on the third postoperative day. This case demonstrated that TEF should be considered in any patient presenting with chronic respiratory problems even after a prolonged symptom-free period.
    MeSH terms: Bronchoscopy; Child; Humans; Lung Abscess/etiology*; Lung Abscess/radiography; Male; Tracheoesophageal Fistula/complications*; Tracheoesophageal Fistula/congenital; Tracheoesophageal Fistula/diagnosis*; Tracheoesophageal Fistula/surgery
  7. Sim SM, Hoggard PG, Sales SD, Phiboonbanakit D, Hart CA, Back DJ
    AIDS Res Hum Retroviruses, 1998 Dec 20;14(18):1661-7.
    PMID: 9870320
    Zidovudine (ZDV) is converted to its active triphosphate (ZDVTP) by intracellular kinases. The intermediate ZDV monophosphate (ZDVMP) is believed to play a major role in ZDV toxicity. Manipulation of ZDV phosphorylation is a possible therapeutic strategy for altering the risk-benefit ratio. Here we investigate whether combining RBV with ZDV is able to modulate efficacy and toxicity of ZDV. We have measured the intracellular activation of ZDV (0.3 microM) in the absence and presence of ribavirin (RBV; 2 and 20 microM) in Molt 4 and U937 cells. MTT cytotoxicity of ZDV (10-1000 microM) was also measured with and without RBV (2 microM) in Molt 4 and U937 cells. Measurement of endogenous deoxythymidine triphosphate (dTTP) allowed investigation of the dTTP/ZDVTP ratio. The antiviral efficacy of ZDV in combination with RBV (2 microM) was assessed by HIV p24 antigen measurements. In the presence of RBV (2 and 20 microM) a decrease in total ZDV phosphates was observed, owing mainly to an effect primarily on ZDVMP rather than the active ZDVTP. RBV also increased endogenous dTTP pools in both cell types, resulting in an increase in the dTTP/ZDVTP ratio. ZDV alone significantly reduced p24 antigen production, with an IC50 of 0.34 microM. Addition of RBV increased the IC50 approximately fivefold (1.52 microM). However, at higher concentrations of ZDV (10 and 100 microM) the antagonistic effect of RBV (2 microM) on ZDV was lost. The RBV-mediated decrease in ZDVMP may explain the reduction in ZDV toxicity when combined with RBV (2 microM). Cytotoxicity of ZDV was reduced in the presence of RBV (2 microM) at all concentrations in both cell lines, probably owing to saturation of ZDVTP formation. The interaction of ZDV and RBV is concentration dependent.
    MeSH terms: Antiviral Agents/pharmacology*; Cell Line; Drug Synergism; Humans; Ribavirin/pharmacology*; Thymine Nucleotides/metabolism; Zidovudine/adverse effects; Zidovudine/pharmacology*; Reverse Transcriptase Inhibitors/adverse effects; Reverse Transcriptase Inhibitors/pharmacology*; Anti-HIV Agents/adverse effects; Anti-HIV Agents/pharmacology
  8. Beyrer C, Vancott TC, Peng NK, Artenstein A, Duriasamy G, Nagaratnam M, et al.
    AIDS Res Hum Retroviruses, 1998 Dec 20;14(18):1687-91.
    PMID: 9870323
    We investigated the molecular epidemiology of HIV-1 subtypes in Malaysia among injecting drug users (IDUs) and sexual transmission risk groups, using serologic and genetic techniques. Frozen sera collected at a general hospital, a blood bank, several drug treatment centers, and an STD clinic in Kuala Lumpur, between 1992 and 1996, were investigated retrospectively. V3 peptide serotyping and monomeric gp120 capture serotyping were used to study 89 known HIV-1-infected subjects. The methods differentiate subtypes B, E, and C. V3 peptide and gp120 capture results were comparable. No subtype C-specific reactive sera were found; one specimen was dually reactive for subtypes C and B, using the V3 peptide ELISA; and four were durally reactive for subtypes E and C using this assay. Genotypic analysis of HIV-1 gag RNA in serum was done on a subset of subjects and confirmed serologic findings. HIV-1 subtypes differed significantly by risk category: of 53 IDUs, 29 (55%) were infected with subtype B and 19 (36%) were infected with subtype E, 3 (6%) were dually reactive, and 2 (4%) were not typable. Of 36 persons with heterosexual risks, 29 (81%) were infected with subtype E, 5 (14%) were infected with subtype B, and 2 (5%) were not typable. Persons with IDU risks were significantly more likely to be infected with subtype B than were those with sexual risks (OR 5.89; 95% CI, 1.94-18.54; p < 0.001). Subtypes B and E of HIV-1 appear to predominate in Malaysia; subtype B was more prevalent among IDUs; subtype E was more prevalent among all other groups. These results may have important HIV-1 vaccine implications.
    MeSH terms: Amino Acid Sequence; Humans; Malaysia/epidemiology; Molecular Sequence Data; Phylogeny; Risk Factors; HIV-1/classification; HIV-1/genetics*; HIV Infections/epidemiology; HIV Infections/virology; Molecular Epidemiology
  9. Son R, Rusul G, Samuel L, Yuherman, Senthil S, Rasip A, et al.
    J Appl Microbiol, 1998 Dec;85(6):1073-7.
    PMID: 9871327
    Four Vibrio cholerae O139 Bengal strains isolated from surface water were characterized by antibiotic resistance, plasmid profile, presence of cholera toxin gene and random amplification of polymorphic DNA (RAPD) analysis. All four strains exhibit multiple resistance towards the antibiotics tested with a multiple antibiotic resistance index of 0.5-0.66, and harboured a 2.0 MDa non-conjugative plasmid. The Vibrio cholerae O139 Bengal were positive for the cholera toxin gene. Antibiotyping and random amplification of polymorphic DNA analysis with four primers proved to be useful in discriminating the isolates. RAPD proved to be more sensitive. These results reveal that there is significant genetic diversity among the Vibrio cholerae O139 Bengal strains studied.
    MeSH terms: Malaysia; RNA, Bacterial/analysis; Vibrio cholerae/classification; Vibrio cholerae/genetics*; Vibrio cholerae/isolation & purification; Water Microbiology
  10. Chrisler JC, Zittel CB
    Health Care Women Int, 1998 Jul-Aug;19(4):303-12.
    PMID: 9873290
    Women college students in four countries were invited to write the story of their first menstruation in as much detail as memory allowed. Stories were received from 26 Lithuanians, 27 Americans, 20 Malaysians, and 23 Sudanese. The stories were read and their contents analyzed for the presence or absence of information on such topics as emotional reaction, preparedness, sources of information about menstruation, changes in body image, and celebrations of this rite of passage. Similarities and differences among the groups are discussed, and passages from particularly interesting stories are quoted.
    MeSH terms: Adolescent; Adult; Body Image; Cross-Cultural Comparison; Emotions*; Female; Health Education; Humans; Health Knowledge, Attitudes, Practice; Lithuania; Malaysia; Menarche/ethnology*; Menarche/psychology*; Students/psychology*; Sudan; United States; Universities
  11. Kam TS, Sim KM, Koyano T, Toyoshima M, Hayashi M, Komiyama K
    Bioorg Med Chem Lett, 1998 Jul 07;8(13):1693-6.
    PMID: 9873417
    Four new bisindoles of the vobasine-iboga type, conodiparines A-D were obtained from Tabernaemontana corymbosa which showed appreciable activity in reversing resistance in vincristine-resistant KB cells.
    MeSH terms: Antineoplastic Agents, Phytogenic/pharmacology*; Indoles/isolation & purification*; Indoles/pharmacology; Indoles/chemistry; Magnetic Resonance Spectroscopy; Plants/chemistry*; Tumor Cells, Cultured; Vincristine/pharmacology*; Molecular Structure; Drug Resistance, Multiple*; Drug Resistance, Neoplasm*
  12. Kam TS, Subramaniam G, Sim KM, Yoganathan K, Koyano T, Toyoshima M, et al.
    Bioorg Med Chem Lett, 1998 Oct 06;8(19):2769-72.
    PMID: 9873619
    A series of indole alkaloids of the aspidofractinine-type was assessed for their potential in reversing MDR in vincristine-resistant KB cells. Of the compounds tested, kopsiflorine, kopsamine, pleiocarpine, 11-methoxykopsilongine, lahadinine A and N-methoxycarbonyl-11,12-methylenedioxy-delta 16,17-kopsinine were found to show appreciable activity.
    MeSH terms: Alkaloids/pharmacology*; Alkaloids/chemistry; Antineoplastic Agents, Phytogenic/pharmacology*; Antineoplastic Agents, Phytogenic/chemistry; Indoles/pharmacology*; Indoles/chemistry; Vincristine/pharmacology; Drug Resistance, Multiple*; Drug Resistance, Neoplasm
  13. Srivastava A, Chuansumrit A, Chandy M, Duraiswamy G, Karagus C
    Haemophilia, 1998 Jul;4(4):474-80.
    PMID: 9873777
    The problems with management of haemophilia in developing countries are poor awareness, inadequate diagnostic facilities and scarce factor concentrates for therapy. The priorities in establishing services for haemophilia include training care providers, setting up care centres, initiating a registry, educating affected people and their families about the condition, providing low-cost factor concentrates, improving social awareness and developing a comprehensive care team. A coagulation laboratory capable of reliably performing clotting times with correction studies using normal pooled, FVIII and FIX deficient patient plasma and factor assay is most essential for diagnosis. More advanced centralized laboratories are also needed. Molecular biology techniques for mutation detection and gene tracking should be established in each country for accurate carrier detection and antenatal diagnosis. Different models of haemophilia care exists. In India, there is no support from the government. Services, including import of factor concentrates, are organized by the Haemophilia Federation of India, with support from other institutions. Haemophilia is managed with minimal replacement therapy (about 2000 i.u./PWH/year). In Malaysia, where the system is fully supported by the government, facilities are available at all public hospitals and moderate levels of factor concentrates are available 'on-demand' (about 11,000 i.u./PWH/year) at the hospitals. Haemophilia care in South Africa is provided through major public hospitals. Intermediate purity factor concentrates are locally produced (about 12,000 i.u./PWH/year) at low cost. The combined experience in the developing world in providing haemophilia services should be used to define standards for care and set achievable goals.
    MeSH terms: Developing Countries; Humans
  14. Goh AY, Chan PW, Lum LC, Roziah M
    Arch Dis Child, 1998 Sep;79(3):256-9.
    PMID: 9875023
    OBJECTIVES: To determine the incidence and outcome of acute respiratory distress syndrome (ARDS) in children by comparing two commonly used definitions: the lung injury score and the American-European Consensus Conference definition. The causes and risk for developing ARDS were also studied.

    METHODS: Part prospective and retrospective analysis of 8100 consecutive hospital admissions from 1 June 1995 to 1 April 1997.

    RESULTS: Twenty one patients fulfilled the criteria for ARDS. Both definitions identified the same group of patients. The incidence was 2.8/1000 hospital admissions or 4.2% of paediatric intensive care unit admissions. The main causes were sepsis and pneumonia. Mortality was 13 of 21. Factors predicting death were a high admission paediatric risk of mortality (PRISM) score (30.38 v 18.75) and the presence of multiple organ dysfunction syndrome (92% v 25%).

    CONCLUSION: Both definitions identified similar groups of patients. The incidence in this population was higher than that reported elsewhere, but mortality and cause were similar to those in developed countries. Poor outcome was associated with sepsis, a high admission PRISM score, and simultaneous occurrence of other organ dysfunction.

    MeSH terms: Acute Disease; Child; Child, Preschool; Female; Humans; Infant; Infant, Newborn; Malaysia/epidemiology; Male; Prospective Studies; Respiratory Distress Syndrome, Newborn/diagnosis*; Respiratory Distress Syndrome, Newborn/etiology; Respiratory Distress Syndrome, Newborn/epidemiology; Retrospective Studies; Risk Factors; Severity of Illness Index; Incidence; Survival Rate
  15. Townsend CJ, Loughlin JM
    J Travel Med, 1998 Dec;5(4):226-7.
    PMID: 9876202
    Missionaries are well known to suffer the effects of stress. Patricia Miersma relates missionary stress to combat related stress. 1 Development workers too are known to be at increased risk of death whilst overseas-mostly due to traumatic incidents. Relief workers voluntarily enter high stress situations. These overseas workers are at real risk of Post Traumatic Stress Disorder (PTSD). The issue of Critical Incident Stress Debriefing (CISD, or Psychological Debriefing) has been critically examined in an editorial in the British Medical Journal.3 The first randomized, controlled study of CISD that we are aware of (for motor vehicle accident survivors) was published in 1996.4 With 54 intervention subjects, it did not demonstrate effectiveness.
    MeSH terms: Counseling*; Humans; Stress Disorders, Post-Traumatic/etiology; Stress Disorders, Post-Traumatic/therapy*; Global Health; Missionaries
  16. Yuen KH, Peh KK, Chan KL, Toh WT
    Drug Dev Ind Pharm, 1998 Oct;24(10):955-9.
    PMID: 9876550
    A study was conducted to compare the in vivo bioavailability of a generic metoprolol tablet preparation (Metoprolol) with that of the innovator product, Betaloc. Both preparations have a labeled dose of 100 mg metoprolol tartrate. Twelve healthy adult male volunteers participated in the study, which was conducted according to a standard two-way crossover design with a washout period of 1 week. The bioavailability was compared using the total area under the plasma level versus time curve (AUC0-infinity), peak plasma concentration (Cmax), and time to reach peak plasma concentration (Tmax). No statistically significant difference was observed between the logarithmically transformed AUC0-infinity values or the logarithmically transformed Cmax values of the two preparations. However, a statistically significant difference was observed between the Tmax values, but may not be therapeutically significant or important. Moreover, the 90% confidence interval (CI) for the ratio of the logarithmically transformed AUC0-infinity values of Metoprolol over those of Betaloc was calculated to be between 0.94 and 1.02, while that of Cmax was between 0.98 and 1.01, both of which are within the acceptable limit of 0.80-1.25. From the data obtained, it was also observed that a high proportion of our volunteers of Asian origin appeared to be poor metabolizers of metoprolol, which was consistent with what had been observed in our previous study of another preparation of metoprolol.
    MeSH terms: Adrenergic beta-Antagonists/pharmacokinetics*; Adult; Analysis of Variance; Antihypertensive Agents/pharmacokinetics*; Humans; Intestinal Absorption; Male; Metoprolol/pharmacokinetics*; Tablets; Therapeutic Equivalency; Drugs, Generic; Cross-Over Studies
  17. Newaz MA, Nawal NN
    Am J Hypertens, 1998 Dec;11(12):1480-5.
    PMID: 9880131
    The aim of this study was to determine the effects of alpha-tocopherol on lipid peroxidation and total antioxidant status of spontaneously hypertensive rats (SHR), comparing them with normal Wistar-Kyoto (WKY) rats. SHR were divided into three groups and treated with different doses of alpha-tocopherol (alpha1, 17 mg/kg diet; alpha2, 34 mg/kg diet; and alpha3, 170 mg/kg diet). Normal WKY and untreated SHR were used as normal (N) and hypertensive control (HC). Blood pressures were recorded every 10 days for 3 months. At the end of the trial, animals were killed and measurement of plasma total antioxidant status, plasma superoxide dismutase (SOD) activity, and lipid peroxide levels in plasma and blood vessels was carried out following well-established methods. From our study it was found that lipid peroxides in thoracic aorta (N, 0.47 +/- 0.17; H, 0.96 +/- 0.37; P < .0001) and plasma (N, 0.06 +/- 0.01; H, 0.13 +/- 0.01) were significantly higher in hypertensives than in normal rats. SOD activity was significantly lower in hypertensive than normal rats (N, 172.93 +/- 46.91; H, 110.08 +/- 14.38; P < .005). Total antioxidant status was significantly higher in normal than hypertensive rats (N, 0.88 +/- 0.05; H, 0.83 +/- 0.02; P < .05). After the antioxidant trial, it was found that in the treated groups rise of blood pressure was prevented significantly (P < .001) and lipid peroxides in blood vessels were significantly reduced more than in the controls (P < .001). For plasma lipid peroxide it was only significant for groups alpha2 (P < .001) and alpha3 (P < .05). Although all three treated groups showed improved total antioxidant status, only groups alpha2 (0.87 +/- 0.04, P < .005) and alpha3 (1.20 +/- 0.18, P < .001) were statistically significant. All the three groups showed significant increases in their SOD activity (P < .001). Correlation studies showed that total antioxidant status and SOD were significantly negatively correlated with blood pressure in normal rats (P = .007; P = .008). Lipid peroxides in both blood vessel and plasma showed a positive correlation. In the treated groups, lipid peroxides in blood vessels maintained a significant positive correlation with blood pressure in all groups (alpha1, P = .021; alpha2, P = .019; alpha3, P = .002), whereas for plasma lipid peroxides the correlation was in groups alpha1 (P = .005) and alpha2 (P = .009). For SOD activity, significant negative correlations were found with blood pressure in the alpha2 (P = .017) and alpha3 (P = .025) groups. Total antioxidant status maintained a significant negative correlation with blood pressure in all three groups (alpha1, P = .012; alpha2, P = .044; alpha3, P = .014). In conclusion it was found that supplement of alpha-tocopherol may prevent development of increased blood pressure, reduce lipid peroxides in plasma and blood vessels, and enhance the total antioxidant status, including SOD activity.
    MeSH terms: Animals; Antioxidants/pharmacology*; Hypertension/drug therapy*; Hypertension/metabolism; Male; Rats, Inbred SHR; Rats, Inbred WKY; Superoxide Dismutase/metabolism*; Vitamin E/pharmacology*; Vitamin E/therapeutic use; Lipid Peroxidation/drug effects*; Rats
  18. Thambi Dorai CR, Muthu Alhagi V, Chee Eng N, Ismail Z, Yakub A
    Pediatr Surg Int, 1998 Nov;14(1-2):84-5.
    PMID: 9880705
    A neonate with severe respiratory distress due to a benign mediastinal teratoma (MT) is reported. Despite early and easy surgical excision of the tumor, the child died due to poor cardiac function. Only ten cases of MT in neonates have been reported in the literature so far. While the tumor has been known to interfere with lung development in utero, postnatal myocardial dysfunction due to poor heart development has not been previously documented.
    MeSH terms: Female; Heart Diseases/etiology; Humans; Infant, Newborn; Mediastinal Neoplasms/complications; Mediastinal Neoplasms/congenital*; Mediastinal Neoplasms/epidemiology; Respiratory Insufficiency/etiology; Teratoma/complications; Teratoma/congenital*; Teratoma/epidemiology
  19. Ramanujam TM, Sergius A, Usha V, Ramanathan S
    Pediatr Surg Int, 1998 Nov;14(1-2):134-7.
    PMID: 9880724
    Urethral duplication (UD) is an uncommon malformation. Obstruction rarely occurs in hypospadiac UD. We describe two children with incomplete hypospadiac UD in association with posterior urethral valves, a combination not previously recognised. The embryonic significance of this anomaly is discussed. Keywords Urethral duplication. Hypospadias. Posterior urethral valve. Megalourethra
    MeSH terms: Child; Child, Preschool; Humans; Hypospadias/complications*; Hypospadias/pathology; Hypospadias/surgery; Male; Urethra/abnormalities*; Urethra/radiography
  20. Reddy SC, Menon BS
    Acta Ophthalmol Scand, 1998 Dec;76(6):700-3.
    PMID: 9881556
    PURPOSE: To determine the prevalence of ocular manifestations in childhood acute leukaemia at the time of presentation.

    METHODS: Eighty-two children with acute leukaemia were examined for ocular lesions within two days of diagnosis before starting chemotherapy. The detailed ocular examination of both eyes was carried out by the ophthalmologist irrespective of the presence or absence of eye symptoms in all cases.

    RESULTS: Only 3 out of 82 children presented with eye symptoms (3.6%). However, ocular changes were found in 14 children (17%); ten with lymphoblastic and four with myeloid leukaemia. The ocular lesions observed were proptosis, intraretinal haemorrhages, white centered haemorrhages, cotton wool spots, macular haemorrhage, subhyaloid haemorrhage, vitreous haemorrhage, papilloedema, cortical blindness, sixth nerve palsy, and exudative retinal detachment with choroidal infiltration.

    CONCLUSION: In view of the high prevalence of asymptomatic ocular lesions in childhood acute leukaemia, routine ophthalmic examination should be included as a part of evaluation at the time of diagnosis.

    MeSH terms: Child; Child, Preschool; Exophthalmos/diagnosis; Exophthalmos/etiology; Female; Humans; Infant; Leukemia, Myeloid/complications*; Leukemia, Myeloid/diagnosis; Male; Prospective Studies; Retinal Detachment/diagnosis; Retinal Detachment/etiology; Retinal Diseases/diagnosis; Retinal Diseases/etiology*; Retinal Hemorrhage/diagnosis; Retinal Hemorrhage/etiology; Vitreous Hemorrhage/diagnosis; Vitreous Hemorrhage/etiology*; Choroid Diseases/diagnosis; Choroid Diseases/etiology*; Prevalence; Leukemic Infiltration; Precursor Cell Lymphoblastic Leukemia-Lymphoma/complications*; Precursor Cell Lymphoblastic Leukemia-Lymphoma/diagnosis
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