Displaying publications 1 - 20 of 40 in total

Abstract:
Sort:
  1. Fulltext A 'target' skin lesion
    Loh KY
    Aust Fam Physician, 2008 Nov;37(11):946.
    PMID: 19037470
    A boy, 12 years of age, was being treated for pneumonia. The cold haemagglutination test was positive for Mycoplasma pneumoniae. He developed an isolated asymptomatic skin lesion on his lower limb which disappeared completely after 1 week.
    Matched MeSH terms: Pneumonia, Mycoplasma/diagnosis
  2. A case report of severe mycoplasma pneumonia with autoimmune haemolytic anaemia
    Roshan S, Tan SW
    Med J Malaysia, 2020 09;75(5):600-602.
    PMID: 32918437
    Mycoplasma pneumonia is a common cause of respiratory disease and more so in school going children. The spectrum of the manifestations range from haematological, dermatological, neurological, musculoskeletal, renal, cardiac and also gastrointestinal. The treatment approach has varied over time. In this report we would like to share our experience in a case of M.pneumonia with autoimmune haemolytic anaemia (AIHA).
    Matched MeSH terms: Mycoplasma pneumoniae/isolation & purification; Pneumonia, Mycoplasma/diagnosis; Pneumonia, Mycoplasma/physiopathology*; Pneumonia, Mycoplasma/surgery
  3. A review of the serological results obtained in a routine diagnostic laboratory for Mycoplasma pneumoniae infections
    Tay ST, Cheong YM
    Malays J Pathol, 1995 Jun;17(1):35-7.
    PMID: 8907003
    The results of a Mycoplasma pneumoniae serology test performed routinely at the Bacteriology Division, Institute for Medical Research were reviewed. A total of 1402 patients were screened over a period of 4 years (January, 1990-December, 1993), of which 327 (23.3%) were seropositive. The seropositivity rates among Malays, Chinese and Indians were 25.2, 25.4 and 17.8% respectively. The male to female ratio was 1:1. The age specific rate was highest amongst patients of the 6-12 years (35.1%) followed by the 13-20 years age groups (35.0%). In general, infection with M. pneumoniae appears to be relatively common in this country.
    Matched MeSH terms: Mycoplasma pneumoniae/isolation & purification; Pneumonia, Mycoplasma/diagnosis*; Pneumonia, Mycoplasma/ethnology
  4. Acute necrotising encephalopathy of childhood: A review of two cases
    Ong SCL, Nur Azidawati AH, Liew YH, Anita S
    Med J Malaysia, 2017 10;72(5):311-313.
    PMID: 29197889 MyJurnal
    Acute necrotising encephalopathy of childhood (ANEC) is an uncommon disease with characteristic clinical and imaging findings. We present two cases of ANEC secondary to Respiratory Syncytial Virus (RSV) and mycoplasma infections. An eight-month-old boy presented with features of gastroenteritis but soon developed multiple episodes of seizures. Blood and CSF cultures were negative but nasopharyngeal aspirate immunofluorescence was positive for RSV. A nine-year-old girl presented with abnormal behaviour following two days of prodromal symptoms. Her serological markers implicated mycoplasma (IgM titre 1: 640). CT brain of both patients showed bilateral symmetrical thalamic hypodensities, while MRI revealed more extensive white matter involvements.
    Matched MeSH terms: Mycoplasma Infections/drug therapy; Mycoplasma Infections/physiopathology
  5. Ameliorative effect of Albizia chinensis synthesized ZnO-NPs on Mycoplasma pneumoniae infected pneumonia mice model
    Yu L, Lu M, Zhang W, Alarfaj AA, Hirad AH, Zhang H
    Microb Pathog, 2020 Apr;141:103960.
    PMID: 31953224 DOI: 10.1016/j.micpath.2019.103960
    BACKGROUND: Mycoplasma pneumoniae (MP) is a common cause of community-acquired pneumonia (CAP) among the children and adults that results upper and lower respiratory tract infections.

    OBJECTIVE: This study was aimed to inspect the ameliorative action of A. chinensis synthesized ZnONPs against M. pneumoniae infected pneumonia mice model.

    MATERIALS AND METHODS: ZnO NPs was synthesized from Albizia chinensis bark extract and characterized by UV-Vis spectroscopy, Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), energy dispersive X-ray (EDX) and atomic force microscope (AFM) analyses. The antibacterial effectual of synthesized ZnONPs were examined against clinical pathogens. The pneumonia was induced to BALB/c mice via injecting the M. pneumoniae and treated with synthesized ZnONPs, followed by the total protein content, total cell counts and inflammatory mediators level was assessed in the BALF of experimental animals. The Histopathological investigation was done in the lung tissues of test animals.

    RESULTS: The outcomes of this work revealed that the formulated ZnONPs was quasi-spherical, radial and cylindrical; the size was identified as 116.5 ± 27.45 nm in diameter. The in vitro antimicrobial potential of formulated ZnO-NPs displayed noticeable inhibitory capacity against the tested fungal and bacterial strains. The administration of synthesized ZnO-NPs in MP infected mice model has significantly reduced the levels of total protein, inflammatory cells, inflammatory cytokines such as IL-1, IL-6, IL-8, tumour necrosis factor-alpha (TNF-a) and transforming growth factor (TGF). Besides, the histopathological examination of MP infected mice lung tissue showed the cellular arrangements were effectively retained after administration of synthesized ZnO-NPs.

    CONCLUSION: In conclusion, synthesized ZnO-NPs alleviate pneumonia progression via reducing the level of inflammatory cytokines and inflammatory cells in MP infected mice model.

    Matched MeSH terms: Mycoplasma pneumoniae/drug effects*; Pneumonia, Mycoplasma/microbiology; Pneumonia, Mycoplasma/pathology
  6. An Asian study on the prevalence of atypical respiratory pathogens in community-acquired pneumonia
    Ngeow YF, Suwanjutha S, Chantarojanasriri T, Wang F, Saniel M, Alejandria M, et al.
    Int J Infect Dis, 2005 May;9(3):144-53.
    PMID: 15840455
    In many parts of Asia, the inaccessibility and high cost of diagnostic tests have hampered the study of community-acquired pneumonia (CAP) caused by atypical respiratory pathogens.
    Matched MeSH terms: Mycoplasma pneumoniae/genetics; Mycoplasma pneumoniae/isolation & purification*
  7. Fulltext Antimicrobial susceptibility of pathogenic mycoplasmas in chickens in Asia
    Morrow CJ, Kreizinger Z, Achari RR, Bekő K, Yvon C, Gyuranecz M
    Vet Microbiol, 2020 Nov;250:108840.
    PMID: 33068825 DOI: 10.1016/j.vetmic.2020.108840
    Mycoplasma synoviae (n = 26) and M. gallisepticum (n = 11) isolates were gained from 164 clinical samples collected from China, India, Indonesia, Malaysia, Philippines, Republic of Korea and Thailand. Most isolates were from commercial chicken production systems. A method of filtering (0.45 μm) samples immediately after collection was convenient allowing over a week for transit to the laboratory. Minimum inhibitory concentrations (MICs) were characterized by a broth microdilution method to enrofloxacin, difloxacin, oxytetracycline, chlortetracycline, doxycycline, tylosin, tilmicosin, tylvalosin, tiamulin, florfenicol, lincomycin, spectinomycin and lincomycin and spectinomycin combination (1:2). Increased MICs to various antimicrobials were seen in different isolates but appeared largely unrelated to the antimicrobial treatment histories. Overall, the results were similar to other MIC surveys around the world. Generally, low MICs to tetracyclines, tiamulin and tylvalosin were observed. Increased tilmicosin MICs were observed in both M. synoviae and M. gallisepticum isolates (≥64 μg/ml MIC90 values) and this was seen in all isolates with high tylosin MICs. Increases in lincomycin MICs were mostly associated with increases in tilmicosin MICs. The results also suggested that antimicrobial use after mycoplasma vaccination may interfere with vaccine strain persistence and efficacy (field strains were more commonly observed in flocks that had treatments after vaccination) and this area warrants more investigation. The study shows that isolation and MIC determination can be done from remote locations and suggests that this may provide information that will allow more effective use of antimicrobials or other methods of control of avian mycoplasma in chickens (e.g. live vaccines) and therefore more responsible use of antimicrobials from a one health perspective.
    Matched MeSH terms: Mycoplasma Infections/drug therapy; Mycoplasma Infections/veterinary*; Mycoplasma synoviae/drug effects*; Mycoplasma synoviae/pathogenicity*
  8. Avian mycoplasmosis in Asia
    Sato S
    Rev. - Off. Int. Epizoot., 1996 Dec;15(4):1555-67.
    PMID: 9190025
    Since 1954, avian mycoplasmosis has been considered a significant problem in chicken flocks in Japan and in other Asian countries. In Japan, Mycoplasma gallisepticum (MG) and M. synoviae (MS) infections were confirmed aetiologically in chicken flocks affected with respiratory disease or synovitis in 1962 and 1973, respectively. In other Asian countries, including Indonesia, the People's Republic of China, Korea, Malaysia, the Philippines, Taipei China and Thailand, the occurrence of mycoplasmosis in chicken flocks has been recognised serologically or aetiologically. Adverse atmospheric and environmental conditions, in addition to mixed infections of bacterial or viral origin, play an important role in the spread of MG and MS within chicken flocks or in the induction of clinical respiratory mycoplasmosis. Serological tests are important in determining and monitoring the mycoplasmal infection status of chicken flocks. The establishment of mycoplasma-free breeding stocks is recognised as essential for the control of avian mycoplasmosis. To eliminate the transmission of MG to the egg, treatment of infected breeder flocks or their progeny with anti-mycoplasmal antibiotics was effective in considerably reducing the infection rate but not in entirely eliminating MG infection. The preincubation heat treatment of chicken hatching eggs has proved an effective procedure for establishing MG- and MS-free breeding stocks in Japan. Vaccination against MG infection has been practised successfully in Japan and other countries.
    Matched MeSH terms: Mycoplasma Infections/diagnosis; Mycoplasma Infections/epidemiology; Mycoplasma Infections/prevention & control; Mycoplasma Infections/veterinary*
  9. Choanal cleft as an alternative site for the isolation of avian mycoplasmas
    Shah-Majid M, Nihayah M
    Vet Rec, 1987 Aug 15;121(7):153.
    PMID: 3660547
    Matched MeSH terms: Mycoplasma/isolation & purification*; Mycoplasma Infections/epidemiology; Mycoplasma Infections/veterinary
  10. Fulltext Colonization and transmission of Ureaplasma urealyticum and Mycoplasma hominis from mothers to full and preterm babies by normal vaginal delivery
    Chua KB, Ngeow YF, Lim CT, Ng KB, Chye JK
    Med J Malaysia, 1999 Jun;54(2):242-6.
    PMID: 10972036
    A prospective study was carried out among pregnant women and their newborn babies in the University Hospital, Kuala Lumpur from January 1996 to June 1997. The maternal cervical colonization rates of Ureaplasma urealyticum (UU) and Mycoplasma hominis (MH) were found to be 57.5% and 15.8% respectively while the isolation rates from nasopharyngeal secretions of the newborns were 50.8% for UU and 6.6% for MH. The overall transmission rates were 88.4% for UU and 42.1% for MH. There was no significant difference in the transmission rates of either organism from mothers to their respective newborn babies by the maturity of pregnancy. In preterm babies, the nasopharyngeal isolation rates of UU and MH were not influenced by the babies' gestational age and birth weight nor by the maternal history of abortion or parity. However, there was a tendency for UU to persist in the nasopharyngeal secretion of preterm babies especially those of birth weight below 2 kg. None of the babies contaminated with mycoplasmas at birth developed respiratory symptoms during six to eight weeks of follow-up.
    Matched MeSH terms: Mycoplasma hominis/isolation & purification*
  11. Computational prediction of Mycoplasma hominis proteins targeting in nucleus of host cell and their implication in prostate cancer etiology
    Khan S, Zakariah M, Palaniappan S
    Tumour Biol., 2016 Aug;37(8):10805-13.
    PMID: 26874727 DOI: 10.1007/s13277-016-4970-9
    Cancer has long been assumed to be a genetic disease. However, recent evidence supports the enigmatic connection of bacterial infection with the growth and development of various types of cancers. The cause and mechanism of the growth and development of prostate cancer due to Mycoplasma hominis remain unclear. Prostate cancer cells are infected and colonized by enteroinvasive M. hominis, which controls several factors that can affect prostate cancer growth in susceptible persons. We investigated M. hominis proteins targeting the nucleus of host cells and their implications in prostate cancer etiology. Many vital processes are controlled in the nucleus, where the proteins targeting M. hominis may have various potential implications. A total of 29/563 M. hominis proteins were predicted to target the nucleus of host cells. These include numerous proteins with the capability to alter normal growth activities. In conclusion, our results emphasize that various proteins of M. hominis targeted the nucleus of host cells and were involved in prostate cancer etiology through different mechanisms and strategies.
    Matched MeSH terms: Mycoplasma Infections/microbiology*; Mycoplasma hominis/metabolism*; Mycoplasma hominis/pathogenicity
  12. Detection of Mycoplasma gallisepticum antibodiesin the sera of village chickens by the enzyme-linked immunosorbent assay
    Shah-Majid M
    Trop Anim Health Prod, 1996 May;28(2):181-2.
    PMID: 8809982
    Matched MeSH terms: Mycoplasma Infections/diagnosis; Mycoplasma Infections/veterinary*
  13. Detection of Mycoplasma pneumoniae from cerebrospinal fluid samples of pediatric patients
    Tay ST, Habsah MY, Tan SC, Rohani MY
    Southeast Asian J. Trop. Med. Public Health, 2000 Dec;31(4):684-7.
    PMID: 11414412
    Central nervous system manifestations are probably the most frequent extrapulmonary complications of infections due to Mycoplasma pneumoniae, occur mostly in children. In this study, we attempted to isolate M. pneumoniae and to detect the organism by polymerase chain reaction (PCR) from cerebrospinal fluid samples (CSF) of pediatric patients. Of the 244 CSF samples, no M. pneumoniae was isolated. Six (2.5%) of the CSF samples were positive by PCR amplification. More effort are necessary to isolate the organism from CSF samples in order to ascertain the role of M. pneumoniae in causing neurological complications.
    Matched MeSH terms: Mycoplasma Infections/cerebrospinal fluid*; Mycoplasma Infections/microbiology; Mycoplasma pneumoniae/genetics; Mycoplasma pneumoniae/isolation & purification*
  14. Fulltext Development of multiplex real-time PCR for the rapid detection of five bacterial causes of community acquired pneumonia
    Al-Marzooq F, Imad MA, How SH, Kuan YC
    Trop Biomed, 2011 Dec;28(3):545-56.
    PMID: 22433883 MyJurnal
    Establishing a microbial diagnosis for patients with community-acquired pneumonia (CAP) is still challenging and is often achieved in only 30-50% of cases. Polymerase chain reaction (PCR) has been shown to be more sensitive than conventional microbiological methods and it could help to increase the microbial yield for CAP patients. This study was designed to develop, optimize and evaluate multiplex real-time PCR as a method for rapid differential detection of five bacterial causes of CAP namely Streptococcus pneumoniae, Burkholderia pseudomallei and atypical bacterial pathogens, Mycoplasma pneumoniae, Chlamydophila pneumoniae and Legionella pneumophila. Duplex and triplex real-time PCR assays were developed using five sets of primers and probes that were designed based on an appropriate specific gene for each of the above CAP pathogens. The performance of primers for each organism was tested using SYBR Green melt curve analysis following monoplex realtime PCR amplification. Monoplex real-time PCR assays were also used to optimize each primers-probe set before combining them in multiplex assays. Two multiplex real-time PCR assays were then optimized; duplex assay for the differential detection of S. pneumoniae and B. pseudomallei, and triplex assay for the atypical bacterial pathogens. Both duplex and triplex real-time PCR assays were tested for specificity by using DNA extracted from 26 related microorganisms and sensitivity by running serial dilutions of positive control DNAs. The developed multiplex real-time PCR assays shall be used later for directly identifying CAP causative agents in clinical samples.
    Matched MeSH terms: Mycoplasma pneumoniae/genetics; Mycoplasma pneumoniae/isolation & purification
  15. Effect of Mycoplasma gallinarum on embryonated village chicken eggs
    Shah-Majid M
    Res Vet Sci, 1994 Nov;57(3):390-2.
    PMID: 7871263
    The effect of Mycoplasma gallinarum isolated from village chickens on embryonated village chicken eggs was investigated. Seven-, 10-, 12- and 18-day-old embryos were inoculated with medium containing 10(6) colony forming units of M gallinarum or with uninfected medium and incubated at 37 degrees C until they hatched. There was no significant difference between the infected embryos which failed to hatch and those which hatched or between them and the group inoculated with medium only. A much higher percentage of the eggs inoculated as 18-day-old embryos hatched than of those inoculated at seven, 10 and 12 days old. The hatchability of the uninoculated village chicken eggs used in the four trials ranged from 60 to 100 per cent. Mycoplasmas were isolated from the oesophagus, trachea and yolk of the infected chicks and from the dead-in-shell embryos.
    Matched MeSH terms: Mycoplasma/pathogenicity*
  16. Effect of induced expression of an antimicrobial peptide melittin on Chlamydia trachomatis and Mycoplasma hominis infections in vivo
    Lazarev VN, Shkarupeta MM, Titova GA, Kostrjukova ES, Akopian TA, Govorun VM
    Biochem Biophys Res Commun, 2005 Dec 16;338(2):946-50.
    PMID: 16246304
    A plasmid construct was designed in which the gene of antimicrobial peptide melittin is controlled by the tetracycline-responsive promoter of human cytomegalovirus, aided by a constitutively expressed trans-activator protein gene. Its vaginal administration and induction of melittin gene transcription with doxycycline markedly suppressed subsequent genital tract infection of mice by Mycoplasma hominis and Chlamydia trachomatis. At least half of the melittin-protected animals proved free of either pathogen within 3-4 weeks. Recombinant plasmids expressing genes of antimicrobial peptides hold much promise as agents for prevention and control of urogenital latent infections.
    Matched MeSH terms: Mycoplasma Infections/metabolism; Mycoplasma Infections/microbiology*; Mycoplasma Infections/therapy*; Mycoplasma hominis/isolation & purification*
  17. Effect of mixed infection of Mycoplasma gallinarum and Newcastle disease virus (F strain) on the tracheal epithelium of village chickens
    Shah-Majid M
    Res Vet Sci, 1996 Sep;61(2):176-8.
    PMID: 8880993
    The effects of a mixed infection of Mycoplasma gallinarum and Newcastle disease virus (F strain) on the tracheal epithelium of village chickens were investigated and observed by scanning electron microscopy. Day-old village chicks were vaccinated intranasally with F strain Newcastle disease virus and inoculated intratracheally on the same day with 10(8) colony forming units of M gallinarum. In another study the chicks were vaccinated and then infected with M gallinarum seven days later. The first group of chicks was euthanased three, seven, 10, 14 and 21 days after vaccination and infection and the vaccinated chicks were euthanased three, seven, 10 and 14 days after infection. In the chicks vaccinated and infected on the same day, major alterations to the tracheal epithelium were visible three days later. There were fewer ciliated cells and the borders of the non-ciliated cells were prominent. Several depressions had formed in the epithelial surface. At higher magnification, clumps of microvilli were visible on some of the non-ciliated cells. Seven days after vaccination and infection, the tracheal epithelium appeared normal, with an increase in the numbers of ciliated cells, although raised borders were observed on the non-ciliated cells in some areas. No clumping of microvilli or depressions in the epithelial surface were observed. In the chicks infected seven days after vaccination, the tracheal epithelium appeared normal with no visible changes on its surface.
    Matched MeSH terms: Mycoplasma Infections/complications; Mycoplasma Infections/pathology*
  18. Fulltext Frequency of Mycoplasma pneumoniae, Legionella pneumophila and Chlamydia spp. among patients with atypical pneumonia in Tehran
    Noori Goodarzi N, Pourmand MR, Rajabpour M, Arfaatabar M, Mosadegh M, Syed Mohamad SA
    New Microbes New Infect, 2020 Sep;37:100744.
    PMID: 32953125 DOI: 10.1016/j.nmni.2020.100744
    Mycoplasma pneumoniae, Legionella pneumophila and Chlamydia pneumoniae are the most common bacterial agents, which account for 15-40%, 2-15% and 5-10% of atypical community-acquired pneumonia (CAP) respectively. These agents are mostly associated with infection in the outpatient setting. The aim of this study was to evaluate the frequency of these pathogens among patients with CAP attending outpatient clinics in Tehran. A cross-sectional study was carried out of 150 patients attending to educational hospitals in Tehran with CAP. M. pneumoniae, L. pneumophila and Chlamydia spp. were detected by PCR assay, targeting the P1 adhesion gene, macrophage infectivity potentiator (mip) gene and 16S rRNA gene respectively from throat swabs obtained from each patient. A total of 86 (57.3%) of 150 patients were women; median age was 50 years (interquartile range, 35-65 years). M. pneumoniae, L. pneumophila and Chlamydia spp. were detected in 37 (24.7%), 25 (16.7%) and 11 (7.3%) patients respectively; of these, 66 patients (44%) were infected at least by one of these three pathogens. The frequency of L. pneumophila was significantly higher among patients over 60 years old (p 0.03). Coinfection was detected in seven patients (4.7%); six were infected by M. pneumoniae and L. pneumophila, and only one was infected by L. pneumophila and Chlamydia spp. M. pneumoniae was the most prevalent agent of atypical CAP, and L. pneumophila was more likely to infect elderly rather than younger people. Further studies on the prevalence of CAP and its aetiologic agents are needed to improve the diagnosis and treatment of CAP patients.
    Matched MeSH terms: Mycoplasma pneumoniae
  19. Induced expression of melittin, an antimicrobial peptide, inhibits infection by Chlamydia trachomatis and Mycoplasma hominis in a HeLa cell line
    Lazarev VN, Parfenova TM, Gularyan SK, Misyurina OY, Akopian TA, Govorun VM
    Int J Antimicrob Agents, 2002 Feb;19(2):133-7.
    PMID: 11850166
    As the number of pathogenic microbial strains resistant to different antibiotics increases, amphipathic peptides with antimicrobial activity are promising agents for the therapy of infectious diseases. This work deals with the effect of an amphipathic antimicrobial peptide, melittin, expressed within recombinant plasmid vectors, on infection with urogenital pathogens Chlamydia trachomatis and Mycoplasma hominis in HeLa cell culture. Recombinant plasmid constructs with the melittin gene under the control of the tetracycline-responsive promoter of human cytomegalovirus were obtained. We showed inhibition of C. trachomatis and M. hominis infection after the introduction of recombinant plasmid vectors expressing the melittin gene into the infected cell culture.
    Matched MeSH terms: Mycoplasma hominis/drug effects*; Mycoplasma hominis/physiology
  20. Induced expression of the antimicrobial peptide melittin inhibits experimental infection by Mycoplasma gallisepticum in chickens
    Lazarev VN, Stipkovits L, Biro J, Miklodi D, Shkarupeta MM, Titova GA, et al.
    Microbes Infect., 2004 May;6(6):536-41.
    PMID: 15158186
    The in vivo action of the antimicrobial peptide melittin, expressed from a recombinant plasmid vector, on chickens experimentally infected with Mycoplasma gallisepticum was studied. The plasmid vector pBI/mel2/rtTA includes the melittin gene under the control of an inducible tetracycline-dependent human cytomegalovirus promoter and the gene coding for the trans-activation protein rtTA. Aerosol administration of the vector, followed by infecting the chickens with M. gallisepticum 1226, is shown to inhibit development of infection. The inhibitory action was confirmed by a complex of clinical, pathomorphological, histological and serological studies, and also by comparing the M. gallisepticum reisolation frequency from the respiratory tract and internal organs. The data suggest that plasmid vectors expressing genes of antimicrobial peptides can be considered as potential agents for the prevention and treatment of mycoplasma infections in poultry farming.
    Matched MeSH terms: Mycoplasma Infections/microbiology; Mycoplasma Infections/pathology; Mycoplasma Infections/prevention & control; Mycoplasma Infections/veterinary*
Related Terms
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links