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1.
Bull Exp Biol Med ; 171(4): 449-452, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34542749

RESUMO

Culturing of Mycoplasma hominis in the presence of arginine and thymidine and subsequent comparative proteomic analysis of cells showed that, in addition to the already known arginine dihydrolase pathway of energy metabolism, M. hominis can utilize deoxyribose phosphates formed as a result of catabolism of pyrimidine nucleosides. In this case, a sharp deceleration of cell growth was observed. This allows M. hominis to occupy new niches in the host organism and survive under competitive conditions when the main sources of energy are unavailable.


Assuntos
Carbono/farmacologia , Meios de Cultura/farmacologia , Mycoplasma hominis/metabolismo , Proteoma/análise , Arginina/farmacologia , Técnicas Bacteriológicas/métodos , Meios de Cultura/química , Eletroforese em Gel Bidimensional , Humanos , Infecções por Mycoplasma/metabolismo , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/química , Mycoplasma hominis/efeitos dos fármacos , Mycoplasma hominis/crescimento & desenvolvimento , Proteoma/efeitos dos fármacos , Proteoma/metabolismo , Proteômica/métodos , Timidina/farmacologia
2.
Microb Pathog ; 135: 103635, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31352064

RESUMO

OBJECTIVES: Mycoplasma hominis (M.hominis) infections are sexually transmitted and usually associated with urogenital and respiratory diseases. The aim of our study was to (i) detect M. hominis in the vaginal and urine samples of sexually active women using three different detection methods and (ii) to determine the antimicrobial susceptibility and recurrence after the treatment. METHODS: Both vaginal and urine samples were collected from 110 sexually active women at the Obstetrics and Gynecology Clinic, Baskent University Ankara Hospital, Turkey, between March 2015 and February 2016. The presence of M. hominis in the vaginal and urine samples was detected by in vitro culture, two biochemical diagnostics kits (Mycoplasma IES (Autobio, China) and Mycoplasma IST-2 (BioMérieux, France) and PCR. The antibiotic susceptibility of each sample was tested using the kits. The women positive for M. hominis were treated either singly or along with their sexual partners by tetracycline. RESULTS: M. hominis was detected in 72 of 220 (32.7%) samples (both vaginal and urine). Of which 37 showed contrary results with two different kits and then were confirmed by PCR. In 13 samples the IES kit identified M. hominis missed by IST-2, and in 8 samples the MIST-2 kit identified M. hominis missed by IES, while both kits missed 6 samples that were agar culture positive for M. hominis." The highest susceptibility rate was observed against pristinamycin (100%), followed by 91%, 83%, and 75% for doxycycline, tetracycline, and josamycin, respectively. Twenty-five patients treated with tetracycline were followed after one month. The recurrence of M. hominis was not observed in any of the 18 cases where both sexual partners were treated but recurred in 5 of the 7 singly treated women. CONCLUSIONS: The rate of M. hominis detection was significantly higher in the vaginal samples compared to the urine samples. The probability of detecting M. hominis by IST-2 kit was 1.18 times less than IES kit (p < 0.001). When the relationship between the samples was examined, the difference between IES and IST-2 for detecting M. hominis was statistically significant (p < 0.01). Antibiotic susceptibility tests indicated that the tetracycline group of antibiotics was effective in eliminating M. hominis when given to both the sexual partners.


Assuntos
Técnicas de Cultura de Células/métodos , Farmacorresistência Bacteriana/efeitos dos fármacos , Infecções por Mycoplasma/diagnóstico , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/isolamento & purificação , Patologia Molecular/métodos , Antibacterianos/farmacologia , Doxiciclina/farmacologia , Feminino , Hospitais Universitários , Humanos , Josamicina/farmacologia , Testes de Sensibilidade Microbiana , Infecções por Mycoplasma/tratamento farmacológico , Mycoplasma hominis/genética , Obstetrícia , Tetraciclina/farmacologia , Turquia , Vagina/microbiologia
3.
BMJ Open ; 8(11): e024175, 2018 11 28.
Artigo em Inglês | MEDLINE | ID: mdl-30498048

RESUMO

INTRODUCTION: Several bacterial sexually transmitted and genital mycoplasma infections during pregnancy have been associated with poor pregnancy and perinatal outcomes. Comprehensive and systematic information about associations between sexually transmitted infections (STI) and genital infections in pregnancy and adverse perinatal outcomes is needed to improve understanding about the evidence for causal associations between these infections and adverse pregnancy and neonatal outcomes. Our primary objective is to systematically review the literature about associations between: (1) Neisseria gonorrhoeae in pregnancy and preterm birth; (2) Mycoplasma genitalium in pregnancy and preterm birth; (3) M. hominis, Ureaplasma urealyticum and/or U. parvum in pregnancy and preterm birth. METHODS AND ANALYSIS: We will undertake a systematic search of Medline, Excerpta Medica database and the Cochrane Library and Cumulative Index to Nursing and Allied Health Literature. Following an initial screening of titles by one reviewer, abstracts will be independently assessed by two reviewers before screening of full-text articles. To exclude a manuscript, both reviewers need to agree on the decision. Any discrepancies will be resolved by discussion, or the adjudication of a third reviewer. Studies will be included if they report testing for one or more of N. gonorrhoeae, M. genitalium, M. hominis, U. urealyticum and/or U. parvum during pregnancy and report pregnancy and/or birth outcomes. In this review, the primary outcome is preterm birth. Secondary outcomes are premature rupture of membranes, low birth weight, spontaneous abortion, stillbirth, neonatal mortality and ophthalmia neonatorum. We will use standard definitions, or definitions reported by study authors. We will examine associations between exposure and outcome in forest plots, using the I2 statistic to examine between study heterogeneity. Where appropriate, we will use meta-analysis to combine results of individual studies. ETHICS AND DISSEMINATION: This systematic review of published literature does not require ethical committee approval. Results of this review will be published in a peer reviewed, open access journal. PROSPERO REGISTRATION NUMBER: CRD42016050962.


Assuntos
Infecções Bacterianas/complicações , Bactérias Gram-Negativas/crescimento & desenvolvimento , Complicações Infecciosas na Gravidez/microbiologia , Resultado da Gravidez , Nascimento Prematuro/etiologia , Doenças Sexualmente Transmissíveis/complicações , Infecções Bacterianas/microbiologia , Feminino , Humanos , Recém-Nascido , Mycoplasma genitalium/crescimento & desenvolvimento , Mycoplasma hominis/crescimento & desenvolvimento , Neisseria gonorrhoeae/crescimento & desenvolvimento , Gravidez , Nascimento Prematuro/microbiologia , Projetos de Pesquisa , Doenças Sexualmente Transmissíveis/microbiologia , Ureaplasma/crescimento & desenvolvimento , Ureaplasma urealyticum/crescimento & desenvolvimento
4.
Am J Reprod Immunol ; 76(6): 504-511, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27870156

RESUMO

PROBLEM: The polybacterial invasion and inflammation of the amniotic cavity is a common scenario in PTB, and then, we analyzed the cytokine production by human fetal membranes to better understand the host response to polybacterial infections. METHOD OF STUDY: Fetal membranes were treated by heat-inactivated genital mycoplasmas and Gardnerella vaginalis at 103 or 106 colony/color-forming units/mL alone or in combination. Cytokines/receptors were measured in the medium by immunoassays. RESULTS: Stimulation of genital mycoplasmas did not increase the proinflammatory cytokines, except Ureaplasma urealyticum that increased IL-8 levels. However, U. urealyticum and Mycoplasma hominis significantly increased IL-10 and IL-13 levels. G. vaginalis alone or in combination with genital mycoplasmas showed an increased proinflammatory and anti-inflammatory cytokines. CONCLUSIONS: G. vaginalis sustain a proinflammatory response in the fetal membranes in vitro, while genital mycoplasmas induce a strong control of the inflammatory response. The ability of genital mycoplasmas to control the proinflammatory response may favor their survival in the upper genital tract.


Assuntos
Citocinas/imunologia , Membranas Extraembrionárias/imunologia , Gardnerella vaginalis/imunologia , Regulação da Expressão Gênica/imunologia , Mycoplasma hominis/imunologia , Ureaplasma urealyticum/imunologia , Recesariana , Técnicas de Cocultura , Citocinas/genética , Membranas Extraembrionárias/microbiologia , Feminino , Interações Hospedeiro-Patógeno , Temperatura Alta , Humanos , Interleucina-10/genética , Interleucina-10/imunologia , Interleucina-13/genética , Interleucina-13/imunologia , Interleucina-8/genética , Interleucina-8/imunologia , Mycoplasma hominis/crescimento & desenvolvimento , Gravidez , Técnicas de Cultura de Tecidos , Ureaplasma urealyticum/crescimento & desenvolvimento
5.
Antimicrob Agents Chemother ; 60(12): 7502-7504, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27671057

RESUMO

In vitro activities of omadacycline, a new aminomethylcycline, were determined for Mycoplasma and Ureaplasma spp. and compared with those of azithromycin, clindamycin, moxifloxacin, tetracycline, and doxycycline. All omadacycline MICs were <2 µg/ml. MIC90s were 0.063 µg/ml for Mycoplasma hominis, 0.25 µg/ml for Mycoplasma pneumoniae, and 2 µg/ml for Ureaplasma spp. Omadacycline had the lowest MIC90 among all drugs tested against M. hominis Omadacycline activity was not affected by macrolide, tetracycline, or fluoroquinolone resistance.


Assuntos
Antibacterianos/farmacologia , Mycoplasma hominis/efeitos dos fármacos , Mycoplasma pneumoniae/efeitos dos fármacos , Tetraciclinas/farmacologia , Azitromicina/farmacologia , China , Clindamicina/farmacologia , Doxiciclina/farmacologia , Farmacorresistência Bacteriana Múltipla , Fluoroquinolonas/farmacologia , Humanos , Testes de Sensibilidade Microbiana , Moxifloxacina , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/isolamento & purificação , Mycoplasma pneumoniae/crescimento & desenvolvimento , Mycoplasma pneumoniae/isolamento & purificação , Tetraciclina/farmacologia , Estados Unidos
6.
Artigo em Russo | MEDLINE | ID: mdl-26470428

RESUMO

AIM: Study the frequency of detection of mycoplasma and ureaplasma in clinical material from urolithiasis patients. MATERIALS AND METHODS: Clinical material samples (blood sera, urine, uroliths) from 31 urolithiasis patients were obtained during operations of urolith-removal. Cultural method, LAR and PCR were used in the study. RESULTS: The study of clinical material from 31 patients by PCR has shown, that in 25 individuals. (80.6%) DNA of mycoplasma and ureaplasma was detected, and mycoplasma DNA was more frequently detected in uroliths and less--in-blood sera. Mycoplasma hominis DNA was detected in clinical material of a significantly largerninmber of patients. 23 cultures were isolated from 8 patients by a cultural method, that were identified by PCR as M. hominis. All the isolates have grown as "mini colonies". Even after multiple passages in agar medium, reversion of "mini-colonies" into colonies with a classic morphology was not obtained. CONCLUSION: A high frequency of detection of mycoplasma and ureaplasma in clinical material of patients with urolithiasis was established. The isolated M. hominis cultures have only grown as "mini-colonies". The phenomenon discovered could give evidence on high variability of mycoplasma and a possibility of existence of previously unknown form of their persistence in human organism.


Assuntos
DNA Bacteriano/sangue , Infecções por Mycoplasma , Mycoplasma hominis , Urolitíase , Feminino , Humanos , Masculino , Infecções por Mycoplasma/sangue , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/isolamento & purificação , Ureaplasma/crescimento & desenvolvimento , Ureaplasma/isolamento & purificação , Infecções por Ureaplasma/sangue , Infecções por Ureaplasma/microbiologia , Urolitíase/sangue , Urolitíase/microbiologia
7.
Artigo em Russo | MEDLINE | ID: mdl-25051693

RESUMO

AIM: Establishment of ratios that would allow to execute recalculation of mycoplasma concentration from CFU/ml and/or CCU/ml into units obtained during PCR analysis--geq/ml. MATERIALS AND METHODS: Pure cultures of Mycoplasma hominis, Ureaplasma parvum and Ureaplasma urealyticum were studied by cultural and molecular-biological methods with quantitative evaluation. Studies of initial cultures as well as series of 10-fold dilutions were carried out. 32 experiments in total were carried out. RESULTS: Ratio between geq/ml and CFU/ml for M. hominis was 3.5; geq/ ml and CCU/ml ratio--4.4. Ratio between geq/ml and CCU/ml for U. parvum was 7.1; for U. urealyticum--11.2. CONCLUSION: Ratios between indexes obtained during quantitative study of pure genital micoplasma cultures by using 2 methods were established.


Assuntos
Contagem de Colônia Microbiana/normas , Mycoplasma hominis/crescimento & desenvolvimento , Reação em Cadeia da Polimerase/normas , Ureaplasma urealyticum/crescimento & desenvolvimento , Ureaplasma/crescimento & desenvolvimento , Contagem de Colônia Microbiana/estatística & dados numéricos , Meios de Cultura , Humanos , Infecções por Mycoplasma/diagnóstico , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/genética , Mycoplasma hominis/isolamento & purificação , Reação em Cadeia da Polimerase/estatística & dados numéricos , Análise de Regressão , Ureaplasma/genética , Ureaplasma/isolamento & purificação , Infecções por Ureaplasma/diagnóstico , Infecções por Ureaplasma/microbiologia , Ureaplasma urealyticum/genética , Ureaplasma urealyticum/isolamento & purificação , Sistema Urogenital/microbiologia
8.
J Appl Microbiol ; 116(5): 1129-36, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24517235

RESUMO

AIM: To study the effects exerted by argon microwave nonthermal plasma (NTP) on cell wall-lacking Mollicutes bacteria. METHODS AND RESULTS: 10(8) CFU ml(-1) agar plated Mycoplasma hominis and Acholeplasma laidlawii were treated with the nonthermal microwave argon plasma for 30-300 s. The maximal 10- and 100-fold drop was observed for A. laidlawii and Myc. hominis, respectively. Similarly treated Escherichia coli and Staphylococcus aureus demonstrated the 10(5) and 10(3) drop, respectively. Removal of cholesterol affected resistance of A. laidlawii. 10 mmol l(-1) antioxidant butylated hydroxytoluene decreased mortality by a factor of 25-200. UV radiation alone caused 25-85% mortality in comparison with the whole NTP. Exogenously added hydrogen peroxide H2O2 did not cause mortality. NTP treatment of Myc. hominis triggered growth of microcolonies, which were several tenfold smaller than a typical colony. CONCLUSIONS: Despite the lack of cell wall, A. laidlawii and Myc. hominis were more resistant to argon microwave NTP than other tested bacteria. Mycoplasma hominis formed microcolonies upon NTP treatment. A role of UV and active species was demonstrated. SIGNIFICANCE AND IMPACT OF THE STUDY: The first study of NTP effects on Mollicutes revealed importance of a membrane composition for bacterial resistance to NTP. New specific Myc. hominis morphological forms were observed. The study confirmed importance of the concerted action of reactive oxygen species (ROS) with UV and other plasma bioactive agents for NTP bactericidal action.


Assuntos
Acholeplasma laidlawii/efeitos dos fármacos , Antibacterianos/farmacologia , Mycoplasma hominis/efeitos dos fármacos , Gases em Plasma/farmacologia , Argônio , Colesterol/fisiologia , Viabilidade Microbiana/efeitos dos fármacos , Micro-Ondas , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/ultraestrutura , Oxidantes/farmacologia , Raios Ultravioleta
9.
Antibiot Khimioter ; 59(11-12): 7-10, 2014.
Artigo em Russo | MEDLINE | ID: mdl-26448986

RESUMO

A concentrate of the fermentation broth of Trichoderma harzianum Rifai F-180, an organism producing L-lysine-α-oxidase, an antitumor and antiviral enzyme, with the activity in the fermentation broth of 0.54-0.56 U/mI was recovered. The effect of the concentrate on the mycoplasmas growth was investigated for the first time. Two representatives of Mycoplasmafaceae, i.e. Mycoplasma hominis and Mycoplasma fermentans and one representative of Aholeplasmataceae. i. e. Aholeplasma laidlawii were used. It was shown that the fermentation broth inhibited the growth of Mycoplasma hominis after the preliminary exposure. The inhibition rate depended on the mycoplasma inoculation dose and the fermentation broth concentration.


Assuntos
Aminoácido Oxirredutases/química , Antibacterianos/farmacologia , Antineoplásicos/química , Antivirais/química , Meios de Cultura/farmacologia , Mycoplasma hominis/efeitos dos fármacos , Trichoderma/enzimologia , Aminoácido Oxirredutases/isolamento & purificação , Antibacterianos/isolamento & purificação , Antineoplásicos/isolamento & purificação , Antivirais/isolamento & purificação , Relação Dose-Resposta a Droga , Fermentação , Mycoplasma fermentans/efeitos dos fármacos , Mycoplasma fermentans/crescimento & desenvolvimento , Mycoplasma hominis/crescimento & desenvolvimento , Trichoderma/química , Trichoderma/crescimento & desenvolvimento
10.
Mikrobiologiia ; 83(3): 320-7, 2014.
Artigo em Russo | MEDLINE | ID: mdl-25844442

RESUMO

Mycoplasmas are incapable of de novo synthesis of nucleotides and must therefore secrete nucleases in order to replenish the pool of nucleic acid precursors. The nucleolytic activity of mycoplasmas is an important factor in their pathogenicity. Bacterial ribonucleases (RNases) may produce a broad spectrum of biological effects, including antiviral and antitumor activity. Mycoplasma RNases are therefore of interest. In the present work, capacity of Acholeplasma laidlawii and Mycoplasma hominis for RNase synthesis and secretion was studied. During the stationary growth phase, these organisms were found to synthesize Mg(2+)-dependent RNases, with their highest activity detected outside the cells. Localization of A. laidlawii RNases was determined: almost 90% of the RNase activity was found to be associated with the membrane vesicles. Bioinformational analysis revealed homology between the nucleotide sequences of 14 Bacillus subtilis genes encoding the products with RNase activity and the genes of the mycoplasmas under study. Amino acid sequences of 4 A. laidlawii proteins with ribonuclease activity and the Bsn RNase was also established.


Assuntos
Mycoplasma/metabolismo , Ribonucleases/metabolismo , Bacillus subtilis/genética , Magnésio/metabolismo , Mycoplasma/crescimento & desenvolvimento , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/metabolismo , Ribonucleases/biossíntese , Ribonucleases/genética , Homologia de Sequência de Aminoácidos , Homologia de Sequência do Ácido Nucleico
11.
Artigo em Russo | MEDLINE | ID: mdl-23805670

RESUMO

AIM: Study the influence of low temperature (cold) electrolyte plasma (CEP) on survivability of some mycoplasma strains growing in agar as well as mycoplasma that most frequently contaminate transplantable human cell lines of normal and malignant origin with the aim of decontamination. MATERIALS AND METHODS: Mycoplasma hominis, Mycoplasma arginini and Aholeplasma laidlawii grown in agar and mycoplasma that contaminated transplantable human cell lines of normal (MT4) and malignant (HeLa) origin. Plasma source--Plasmatom device that generates CEP at normal atmosphere pressure and environment temperature. Exposure to plasma was carried out with adherence to the same modes for all the variants of biological substrate. The duration of exposure was selected randomly from 15 to 300 seconds. RESULTS: A pronounced bactericidal effect of high doses of CEP on all the tested mycoplasma variants exposed immediately after seeding into agar was shown. However after a passage a residual number of survived colonies was registered. Passage of colonies exposed in grown state even to high doses of CEP also showed survival of a residual number of bacteria in all the tested mycoplasma species. Exposure of M. hominis immediately after seeding to low doses of CEP resulted in formation of unusual mini-colonies identical to those isolated from humans infected by the same mycoplasma. During microbiological seeding into agar of cultural fluid from 2 spontaneously contaminated strains of transplantable human cells and exposed to CEP growth ofmycoplasma was not detected. CONCLUSION: CEP has pronounced bactericidal properties on various mycoplasma strains growing in both agar and contaminating eukaryotic cells. However even at high doses of exposure to CEP an insignificant part of bacterial cells growing in agar still survives. This may indicate a high degree of heterogeneity and adaptation of mycoplasma subjected to even such hard exposure as cold plasma with plasma-chemical mechanism of destruction of biological substrate.


Assuntos
Acholeplasma laidlawii/efeitos dos fármacos , Adaptação Fisiológica , Mycoplasma hominis/efeitos dos fármacos , Mycoplasma/efeitos dos fármacos , Gases em Plasma/farmacologia , Acholeplasma laidlawii/crescimento & desenvolvimento , Ágar , Carga Bacteriana/efeitos dos fármacos , Linhagem Celular , Temperatura Baixa , Meios de Cultura , Células HeLa , Humanos , Viabilidade Microbiana/efeitos dos fármacos , Mycoplasma/crescimento & desenvolvimento , Mycoplasma hominis/crescimento & desenvolvimento
12.
Artigo em Russo | MEDLINE | ID: mdl-23805671

RESUMO

AIM: Study of possibility of generalization of mycoplasma infection in patients with urogenital pathology. MATERIALS AND METHODS: Among the examined patients 5 males characterized by risky sexual behavior with pronounced symptoms of infection or without those were selected. Patients were examined by a complex of methods for the presence of mycoplasma infection by culture, PCR, DFA, PHA, AHR and by detection of specific immune complexes in blood sera. Scrapes from urogenital tract, blood sera samples, urine, saliva, prostatic fluid were materials for the study. RESULTS: In blood of all patients in ELISA antibodies against Mycoplasma hominis were detected; in PHA they were detected only in 2 individuals. In all the patients in blood CIC were detected including antigens and DNA of one or several mycoplasma species. Sperm of 3 individuals was infected by Ureaplasma spp., 2--M. genitalium. In saliva of 2 individuals M. hominis was detected, 3--U. urealyticum. CONCLUSION: In all the examined patients the infection was shown to have generalized character. This phenomenon presents itself as quite significant because mycoplasma may cause anti-apoptotic and oncogenic effect.


Assuntos
Infecções por Mycoplasma/microbiologia , Mycoplasma genitalium/isolamento & purificação , Mycoplasma hominis/isolamento & purificação , Infecções por Ureaplasma/microbiologia , Ureaplasma urealyticum/isolamento & purificação , Adulto , Anticorpos Antibacterianos/sangue , Complexo Antígeno-Anticorpo/sangue , Ensaio de Imunoadsorção Enzimática , Humanos , Masculino , Infecções por Mycoplasma/sangue , Infecções por Mycoplasma/imunologia , Infecções por Mycoplasma/urina , Mycoplasma genitalium/crescimento & desenvolvimento , Mycoplasma hominis/crescimento & desenvolvimento , Reação em Cadeia da Polimerase , Próstata/metabolismo , Próstata/microbiologia , Assunção de Riscos , Saliva/microbiologia , Espermatozoides/microbiologia , Infecções por Ureaplasma/sangue , Infecções por Ureaplasma/imunologia , Infecções por Ureaplasma/urina , Ureaplasma urealyticum/crescimento & desenvolvimento
13.
Artigo em Russo | MEDLINE | ID: mdl-23805676

RESUMO

AIM: Study the possibility of prolonged conservation in macroorganism of antigens, mycoplasma cell DNA and live pathogen cells as part of CIC against the background of persisting antigen biostructures. MATERIALS AND METHODS: Aggregate-hemagglutination, direct immunofluorescence reactions and PCR method were used to determine antigens and DNA. Circulating immune complexes from blood sera samples were isolated by M. Digeon et al., mycoplasma isolation from CIC was carried out in SP-4 medium, species identity of the isolated mini-colonies was confirmed by real-time PCR method. RESULTS: In patients with urogenital and respiratory pathology the frequency of detection of Mycoplasma hominis, Ureaplasma urealyticum and Mycoplasma pneumoniae in free state was 63.3, 53.1 and 80.82% of cases, respectively. Specific CIC in patients with verified respiratory mycoplasmosis 1 month after the onset of the disease were registered in patients with severe course of the disease, bronchitis and diseases of upper respiratory tract--in 92.5, 74.7 and 25.7% of cases, respectively. In children, bronchial asthma patients the frequency of detection of antigens and DNA of M. pneumoniae cells in free state was 72.6 and 12.33%, as part of CIC--in 60.27 and 43.8% of cases, respectively. Antigens and DNA of M. hominis in blood of this group of patients were detected in 32.9 and 26.02%, as part of CIC--in 53.42 and 52.05% of cases, respectively. During repeated examination of 12 children after etiotropic therapy execution (generally in 1.5 - 6 months) in 75% of cases antigens of both M. pneumoniae and M. hominis were detected in free state and as part of CIC. DNA of cells of these mycoplasma species were detected in 20 and 33%, as part of CIC--in41.6 and 50% of cases, respectively. In 5 patients after 6 months (after 1 year in 1 case) mycoplasma antigens and DNA were identified in CIC or in blood sera. During cultivation of CIC components precipitated from 5 blood samples of patients of this group containing M. hominis DNA, culture of M. hominis mini-colonies were isolated in 4 cases. CONCLUSION: The possibility of prolonged persistence of antigens, DNA and whole mycoplasma cells in both free state and as part of CIC in patients with respiratory and urogenital pathology was shown. CIC are thus a peculiar depot, a place of conservation of not only various mycoplasma cell components, but also live cells.


Assuntos
Complexo Antígeno-Anticorpo/sangue , Antígenos de Bactérias/sangue , Asma/sangue , DNA Bacteriano/sangue , Infecções por Mycoplasma/sangue , Infecções Respiratórias/sangue , Infecções por Ureaplasma/sangue , Adolescente , Adulto , Antibacterianos/farmacologia , Antibacterianos/uso terapêutico , Asma/tratamento farmacológico , Asma/imunologia , Asma/microbiologia , Criança , Pré-Escolar , Feminino , Testes de Hemaglutinação , Humanos , Lactente , Masculino , Infecções por Mycoplasma/tratamento farmacológico , Infecções por Mycoplasma/imunologia , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/isolamento & purificação , Mycoplasma pneumoniae/crescimento & desenvolvimento , Mycoplasma pneumoniae/isolamento & purificação , Reação em Cadeia da Polimerase , Infecções Respiratórias/tratamento farmacológico , Infecções Respiratórias/imunologia , Infecções Respiratórias/microbiologia , Infecções por Ureaplasma/tratamento farmacológico , Infecções por Ureaplasma/imunologia , Infecções por Ureaplasma/microbiologia , Ureaplasma urealyticum/crescimento & desenvolvimento , Ureaplasma urealyticum/isolamento & purificação
14.
J Infect Dev Ctries ; 4(3): 156-63, 2010 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-20351456

RESUMO

BACKGROUND: This study aimed to define the occurrence of different organisms causing vulvovaginitis; to evaluate different laboratory methods used for diagnosis of Trichomonas vaginalis (T. vaginalis); and to evaluate the direct score system and clue cell method compared with culture for diagnosis of bacterial and T. vaginalis vaginosis. METHODOLOGY: Clinical and laboratory evaluations were performed for 110 patients. Laboratory methods used for bacteriological diagnosis were direct Gram staining for clue cells and scoring by Nugent score system and bacterial culture. T. vaginalis was identified by wet mount microscopic examination, culture, direct Gram, Giemsa staining and acridine orange (AO). RESULTS: The Nugent score method revealed that the sensitivity and specificity for diagnosis of vaginal discharge by direct rapid microscopic methods were 30% and 80% and for clue cells sensitivity and specificity were 37% and 75% respectively for diagnosis of bacterial vaginosis compared to culture. For diagnosis of T. vaginalis, the Nugent score method revealed that the sensitivity and specificity were 60% and 90% respectively, and for clue cells 75% and 80% respectively. For microcopic methods used for T. vaginalis only, the Gram stain and Giemsa stain sensitivities were poor (15.2% and 48.5%, respectively). Wet mount showed reasonable sensitivity of 75.8%. Acridine orange sensitivity was 93.9% and specificity was 97.5%, CONCLUSION: Prevalent pathogens associated with vaginitis were (Gardnerella vaginalis) G. vaginalis, T. vaginalis and Mycoplasma hominis (M. hominis). Wet mount microscopic examination, acridine orange, and high Nugent score were found as rapid and sensitive methods for diagnosis of T. vaginalis.


Assuntos
Trichomonas vaginalis/isolamento & purificação , Vaginose Bacteriana/diagnóstico , Vaginose Bacteriana/microbiologia , Laranja de Acridina , Adulto , Corantes Azur , Feminino , Gardnerella vaginalis/crescimento & desenvolvimento , Gardnerella vaginalis/isolamento & purificação , Violeta Genciana , Humanos , Pessoa de Meia-Idade , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/isolamento & purificação , Fenazinas , Sensibilidade e Especificidade , Coloração e Rotulagem/métodos , Trichomonas vaginalis/crescimento & desenvolvimento , Descarga Vaginal/etiologia , Esfregaço Vaginal , Vaginose Bacteriana/complicações
16.
PLoS Genet ; 5(10): e1000677, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19816563

RESUMO

Mycoplasma hominis is an opportunistic human mycoplasma. Two other pathogenic human species, M. genitalium and Ureaplasma parvum, reside within the same natural niche as M. hominis: the urogenital tract. These three species have overlapping, but distinct, pathogenic roles. They have minimal genomes and, thus, reduced metabolic capabilities characterized by distinct energy-generating pathways. Analysis of the M. hominis PG21 genome sequence revealed that it is the second smallest genome among self-replicating free living organisms (665,445 bp, 537 coding sequences (CDSs)). Five clusters of genes were predicted to have undergone horizontal gene transfer (HGT) between M. hominis and the phylogenetically distant U. parvum species. We reconstructed M. hominis metabolic pathways from the predicted genes, with particular emphasis on energy-generating pathways. The Embden-Meyerhoff-Parnas pathway was incomplete, with a single enzyme absent. We identified the three proteins constituting the arginine dihydrolase pathway. This pathway was found essential to promote growth in vivo. The predicted presence of dimethylarginine dimethylaminohydrolase suggested that arginine catabolism is more complex than initially described. This enzyme may have been acquired by HGT from non-mollicute bacteria. Comparison of the three minimal mollicute genomes showed that 247 CDSs were common to all three genomes, whereas 220 CDSs were specific to M. hominis, 172 CDSs were specific to M. genitalium, and 280 CDSs were specific to U. parvum. Within these species-specific genes, two major sets of genes could be identified: one including genes involved in various energy-generating pathways, depending on the energy source used (glucose, urea, or arginine) and another involved in cytadherence and virulence. Therefore, a minimal mycoplasma cell, not including cytadherence and virulence-related genes, could be envisaged containing a core genome (247 genes), plus a set of genes required for providing energy. For M. hominis, this set would include 247+9 genes, resulting in a theoretical minimal genome of 256 genes.


Assuntos
Arginina/metabolismo , Genes Bacterianos , Genoma Bacteriano , Mycoplasma hominis/genética , Arginina/análogos & derivados , Metabolismo dos Carboidratos/genética , Adesão Celular/genética , Transferência Genética Horizontal , Humanos , Redes e Vias Metabólicas/genética , Modelos Biológicos , Dados de Sequência Molecular , Mycoplasma genitalium/genética , Mycoplasma genitalium/metabolismo , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma hominis/metabolismo , Ureaplasma/genética , Ureaplasma/metabolismo , Virulência/genética
17.
Reprod Sci ; 16(1): 56-70, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19122105

RESUMO

The authors assess causal, cellular and inflammatory links between intraamniotic infection with Ureaplasma parvum or Mycoplasma hominis and preterm labor in a nonhuman primate model. Long-term catheterized rhesus monkeys received intraamniotic inoculations of clinical isolates of Ureaplasma parvum serovar 1, M hominis, media control or physiological saline. Genital mycoplasmas were quantified in amniotic fluid (AF) and documented in fetal tissues by culture and PCR. In association with elevated AF colony counts for U parvum or M hominis, there was a sequential upregulation of AF leukocytes, proinflammatory cytokines, prostaglandin E2 and F2a, metalloproteinase-9 and uterine activity ( P< .05). Fetal membranes and lung were uniformly positive for both microorganisms; fetal blood and cerebrospinal fluid cultures and PCR were more often positive for M hominis than U parvum. Histopathologic findings of chorioamnionitis, a systemic fetal inflammatory response and pneumonitis worsen with duration of in utero infection. U parvum or M hominis, as sole pathogens, elicit a robust proinflammatory response which contributes to preterm labor and fetal lung injury.


Assuntos
Corioamnionite/microbiologia , Infecções por Mycoplasma/microbiologia , Mycoplasma hominis/crescimento & desenvolvimento , Trabalho de Parto Prematuro/microbiologia , Pneumonia/microbiologia , Infecções por Ureaplasma/microbiologia , Ureaplasma/crescimento & desenvolvimento , Líquido Amniótico/microbiologia , Animais , Feminino , Macaca mulatta , Gravidez
18.
Pathol Biol (Paris) ; 54(3): 125-9, 2006 Apr.
Artigo em Francês | MEDLINE | ID: mdl-16298086

RESUMO

We conducted a prospective study on 100 couples consulting for infertility at the teaching Hospital of Tours, with the scope to determine if there is a benefit for systematic screening of Chlamydia trachomatis, Mycoplasma hominis and Ureaplasma urealyticum among genito-urinary specimen when exploring couples infertility. C. trachomatis was detected by PCR on sperm, endocervix and urine specimen. M. hominis and U. urealyticum were detected by culture on A7 agar medium and with minigaleries on sperm and endocervix specimen. Standard cultures were also performed on sperm, endocervix, vaginal and urine specimen. Only one specimen (sperm) was positive for C. trachomatis. Three percent of the specimen were positive for U. urealyticum (from which 2,5% of the sperm specimen). No specimen was positive for M. hominis. Our results show that screening of C. trachomatis, M. hominis and U. urealyticum is not systematically required for among check up of infertile couples, given the prevalence of chlamydiosis among the population studied. However, it would be interesting to perform it on a targeted population, according to anamnestic or clinical criteria. In addition, an important modification of vaginal flora was observed in 12% of cases, and 2 vaginosis were diagnosed; the putative consequences of this disequilibrium has to be further investigated.


Assuntos
Infecções por Chlamydia/diagnóstico , Chlamydia trachomatis/isolamento & purificação , Infertilidade/microbiologia , Infecções por Mycoplasma/diagnóstico , Mycoplasma hominis/isolamento & purificação , Infecções por Ureaplasma/diagnóstico , Ureaplasma urealyticum/isolamento & purificação , Colo do Útero/microbiologia , Chlamydia trachomatis/crescimento & desenvolvimento , Feminino , Humanos , Masculino , Programas de Rastreamento/métodos , Mycoplasma hominis/crescimento & desenvolvimento , Reação em Cadeia da Polimerase , Espermatozoides/microbiologia , Ureaplasma urealyticum/crescimento & desenvolvimento , Urina/microbiologia
19.
Antimicrob Agents Chemother ; 48(12): 4892-4, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15561875

RESUMO

The aim of this study was to investigate the in vitro antimycoplasmal activity of hydroxytyrosol. Twenty strains of Mycoplasma hominis, three strains of Mycoplasma fermentans, and one strain of Mycoplasma pneumoniae were used. For M. pneumoniae, M. hominis, and M. fermentans, the MICs were 0.5, 0.03 (for 90% of the strains tested), and 0.25 microg/ml, respectively.


Assuntos
Antiprotozoários/farmacologia , Mycoplasma fermentans/efeitos dos fármacos , Mycoplasma hominis/efeitos dos fármacos , Mycoplasma pneumoniae/efeitos dos fármacos , Álcool Feniletílico/análogos & derivados , Álcool Feniletílico/farmacologia , Flavonoides/farmacologia , Frutas/química , Infecções por Mycoplasma/parasitologia , Mycoplasma fermentans/crescimento & desenvolvimento , Mycoplasma hominis/crescimento & desenvolvimento , Mycoplasma pneumoniae/crescimento & desenvolvimento , Olea/química , Fenóis/farmacologia , Folhas de Planta/química , Polifenóis
20.
BMC Microbiol ; 4: 35, 2004 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-15350196

RESUMO

BACKGROUND: Mycoplasma hominis is associated with pelvic inflammatory disease, bacterial vaginosis, post partum fever, sepsis and infections of the central nervous system often leading to serious conditions. Association with development of female infertility has also been suggested, but different publications present different results. We developed a sensitive and fast diagnostic real-time PCR to test clinical samples from women undergoing laparoscopic examination before fertility treatment. To develop a test for the detection and quantification of M. hominis we selected a housekeeping gene, glyceraldehyde-3-phosphate dehydrogenase (gap), as a target. RESULTS: Real-time PCR was optimized to detect 10 copies of M. hominis PG21 genomic DNA. A fluorescence signal was measured for all 20 other M. hominis isolates, and melting curves analysis showed variations in the melting temperature in agreement with sequence variation in the region of the probes. There was no amplification of other mycoplasmal DNA and human DNA. Eighty-three patient cervical swab samples from infertile women were cultured for M. hominis in the BEa medium. Two of the samples (2.4%) were positive after 48 hours of incubation. The real-time PCR detected the same two samples positive, and the DNA concentrations in the clinical specimens were calculated to 37.000 copies/ml and 88.500 copies/ml, respectively. CONCLUSION: The results demonstrate that real-time PCR may prove to be a rapid alternative to the traditional cultivation method. Information on bacterial load in genital swabs can be obtained. The assay allowed detection of M. hominis in a closed system reducing the risk of contamination by amplicon carry-over.


Assuntos
Sistemas Computacionais , Mycoplasma hominis/isolamento & purificação , Reação em Cadeia da Polimerase/métodos , Colo do Útero/metabolismo , Colo do Útero/microbiologia , Primers do DNA/genética , Sondas de DNA , DNA Bacteriano , Endopeptidase K/metabolismo , Feminino , Corantes Fluorescentes , Genes Bacterianos/genética , Gliceraldeído-3-Fosfato Desidrogenases/genética , Humanos , Infecções por Mycoplasma/diagnóstico , Mycoplasma hominis/genética , Mycoplasma hominis/crescimento & desenvolvimento , Sensibilidade e Especificidade , Esfregaço Vaginal/métodos
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