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1.
Rev. argent. microbiol ; 49(1): 39-49, mar. 2017. graf, tab
Article in English | LILACS | ID: biblio-843182

ABSTRACT

Several pathogens have been suspected of playing a role in the pathogenesis of schizophrenia. Chronic inflammation has been proposed to occur as a result of persistent infection caused by Chlamydophila pneumoniae cells that reside in brain endothelial cells for many years. It was recently hypothesized that brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) may play prominent roles in the development of schizophrenia. NT-3 and BDNF levels have been suggested to change in response to various manifestations of infection. Therefore, we aimed to elucidate the roles of BDNF and NT3 in the schizophrenia-C. pneumoniae infection relationship. RT-PCR, immunofluorescence and ELISA methods were used. Fifty patients suffering from schizophrenia and 35 healthy individuals were included as the patient group (PG) and the healthy control group (HCG), respectively. We detected persistent infection in 14 of the 50 individuals in the PG and in 1 of the 35 individuals in the HCG. A significant difference was found between the two groups (p < 0.05). Twenty-two individuals in the PG and 13 in the HCG showed seropositivity for past C. pneumoniae infection, and no difference was observed between the groups (p > 0.05). C. pneumoniae DNA was not detected in any group. A significant difference in NT-3 levels was observed between the groups, with very low levels in the PG (p < 0.001). A significant difference in BDNF levels was also found, with lower levels in the PG (p < 0.05). The mean serum NT-3 level was higher in the PG cases with C. pneumoniae seropositivity than in seronegative cases; however, this difference was not statistically significant (p > 0.05). In conclusion, we suggest that NT-3 levels during persistent C. pneumoniae infection may play a role in this relationship.


Existe la sospecha de que algunos patógenos pueden desempeñar un papel en la patogénesis de la esquizofrenia; en ese contexto, se ha propuesto que la infección persistente causada por células de Chlamydophila pneumoniae presentes en las células endoteliales cerebrales durante muchos años lleva a la inflamación crónica. Recientemente se ha planteado la hipótesis de que el factor neurotrófico de origen cerebral (BDNF, por sus siglas en inglés) y la neurotropina-3 (NT-3) podrían estar implicados en el desarrollo de la esquizofrenia, y se ha sugerido que sus niveles se modifican en respuesta a diversas manifestaciones de la infección. En esta investigación intentamos esclarecer el papel que desempeñan el BDNF y la NT3 en la relación entre la esquizofrenia y la infección por C. pneumoniae. Se utilizaron métodos de RT-PCR, inmunofluorescencia y ELISA. Se incluyeron 50 pacientes con esquizofrenia y 35 individuos sanos como grupo de pacientes (GP) y grupo de controles sanos (GCS), respectivamente. Detectamos una infección persistente en 14 sujetos del GP y en 1 de los del GCS, lo que constituyó una diferencia significativa (p < 0,05). Veinte participantes del GP y 13 del GCS fueron seropositivos para una infección pasada por C. pneumoniae, diferencia no significativa (p > 0,05). No se detectó ADN de C. pneumoniae en ninguno de los dos grupos. Se observó una diferencia significativa entre los grupos en los niveles de NT-3, que fueron muy bajos en el GP (p < 0,001), y de BDNF, inferiores en el GP (p < 0,05). La concentración sérica media de NT-3 fue mayor en los individuos seropositivos para C. pneumoniae en comparación con los seronegativos, pero esta diferencia no alcanzó significación estadística (p > 0,05). Sugerimos que los niveles de NT-3 durante una infección persistente por C. pneumoniae pueden estar implicados en la relación de Chlamydophila pneumoniae con la esquizofrenia.


Subject(s)
Humans , Male , Female , Schizophrenia/complications , Chlamydophila pneumoniae/pathogenicity , Brain-Derived Neurotrophic Factor/analysis , Neurotrophin 3/analysis , Nerve Growth Factors/analysis , Enzyme-Linked Immunosorbent Assay/methods , Fluorescent Antibody Technique, Indirect/methods , Brain-Derived Neurotrophic Factor/adverse effects , Neurotrophin 3/adverse effects , Real-Time Polymerase Chain Reaction/methods
2.
JABHS-Journal of the Arab Board of Health Specializations. 2010; 11 (3): 30-35
in English | IMEMR | ID: emr-144933

ABSTRACT

To investigate the role of Chlamydia pneumoniae in pediatric pneumonia in Babylon, Iraq. We conducted prospective study covering 83 children of both sexes and /= 5 years old. No significant statistic findings regarding distribution of cases for sex, residence, but significant for onset. Routine laboratory tests and radiological features are not specific enough to give accurate diagnosis of these infections, so empiric regimens might be used unless diagnosis was done by rapid diagnostic procedure. The results of this study suggest a remarkable role for Chlamydia pneumoniae infection in childhood community-acquired pneumonia and the knowledge of true prevalence of this organism discovered in the community may lead to modifications in the present empirical treatment of bacterial pneumonia. Thus, specialized rapid laboratory testing for this agent should be more widely used as IgM serology diagnostic tests to avoid complicated course and empirical regimen


Subject(s)
Humans , Adolescent , Male , Female , Child, Preschool , Infant, Newborn , Infant , Child , Chlamydophila pneumoniae/pathogenicity , Chlamydophila Infections/epidemiology , Pneumonia, Bacterial/microbiology , Prospective Studies , Prevalence
3.
Prensa méd. argent ; 95(4): 263-268, jun. 2008. ilus
Article in Spanish | LILACS | ID: lil-505388

ABSTRACT

Asthma is a chronic disease of the aerial route in which inflammation plays a fundamental roll. The responsible mechanisms of the maintenance of the inflammatory process are only partially recognized and there are some evidences that the chronic infection by intracellulary pathogens as C pneumoniae and M. pneumoniae could play an important roll in the etiopathogenesis, despite that the mechanism still is not clearly recognized


Subject(s)
Humans , Bronchodilator Agents/therapeutic use , Asthma/pathology , Chlamydophila pneumoniae/pathogenicity , Clarithromycin/therapeutic use , Fluorescent Antibody Technique, Indirect , Macrolides/therapeutic use , Mycoplasma pneumoniae/pathogenicity
4.
EMHJ-Eastern Mediterranean Health Journal. 2008; 14 (6): 1246-1256
in English | IMEMR | ID: emr-157268

ABSTRACT

We evaluated the serum levels of IgG antibodies to Helicobacter pylori, Chlamydia pneumonia and cytomegalovirus and the level of the inflammatory markers C-reactive protein and fibrinogen in 57 patients with acute coronary syndrome, 65 with unstable angina, 60 with stable angina and 44 healthy controls, and whether these markers were associated with cardiac instability 6 months after admission. There was a significant increased risk of late coronary events [cardiac death or readmission with acute coronary events] associated with seropositivity to C. pneumoniae [adjusted odds ratio 2.12; 95% confidence interval: 1.16-4.08]. Other parameters were not significantly associated with late cardiac events after adjustment for age, sex, diabetes mellitus, hypertension, hyperlipidaemia and smoking behaviour


Subject(s)
Female , Humans , Male , Heart Diseases/blood , Heart Diseases/chemistry , Prognosis , C-Reactive Protein , Fibrinogen , Chlamydophila pneumoniae/pathogenicity , Chlamydia Infections/complications , Immunoglobulin G , Cytomegalovirus Infections/complications , Risk Factors
5.
YAFTEH Journal. 2008; 10 (2): 3-11
in English | IMEMR | ID: emr-90779

ABSTRACT

Atherosclerosis is the most common cause of deaths in the developed countries and causes one million mortalities per year in the USA. Smoking, hypertension, diabetes, obesity, hyperlipidemia, stress, and low activity are known to be the causes of atherosclerosis. The objective of this study is to confirm the relationship between Chlamydia pneumonia [Cpn], as well as helicobacter pylori [Hp] and atherosclerosis. In this analytical case-control study two groups of patients were studied. The first group including 30 patients over 30 years old with coronary artery disease were operated using coronary artery bypass graft. The control group included 30 persons assessed with angiography and having normal coronary arteries. The data were collected and analyzed using statistical methods. The two groups were similar in terms of IgA and IgG anti-Cpn, and IgG anti- Hp but they were statistically different concerning IgA anti-Hp which had more positive cases in the case group in comparison with the control group [p<0.003]. Additionally, 6 and 8 positive findings in immunohistochemistry [IHC] of the aortic punch biopsy were observed in Cpn and Hp respectively. When the serologic and histological findings were compared, it was revealed that the two bacteria had different behaviors in local invasion and systemic reactions. This study confirmed that Hp could cause atherosclerosis by activating systemic reactions while Cpn could not cause it. Moreover, in 20% and 26.7% of the cases Cpn and Hp respectively revealed invasions to the aortic tissues which could result in atherosclerosis. It is recommended that this study must be repeated with large numbers of patients and control groups, and the control groups must be cadavers so that their aortic tissues can be biopsied


Subject(s)
Humans , Atherosclerosis/epidemiology , Chlamydophila pneumoniae/pathogenicity , Helicobacter pylori/pathogenicity , Immunochemistry , Coronary Artery Disease , Case-Control Studies
6.
Col. med. estado Táchira ; 15(4): 30-33, oct.-dic. 2006. tab, graf
Article in Spanish | LILACS | ID: lil-530741

ABSTRACT

Se realiazó un estudio descriptivo, retrospectivo y observacional mediante la revisión de 35 historias médicas de pacientes hospitalizados con Neumonía Atípica entre enero de 1999 y mayo de 2006. El grupo etáreo más afectado fue el de 15 a 39 años de edad, que representa el 54.2 por ciento. Los síntomas más frecuentes fueron de origen respiratorio, como son tos (32.5 por ciento) y disnea (26.25 por ciento). El 22.8 por ciento resultó positivo para Mycoplasma y el 20 por ciento para Chlamydia. Al momento del ingreso, se manejó con amtibioticoterapia basada en Levofloxacina en un 29.7 por ciento. Claritromicina en un 16.2 por ciento. Se observo evolución satisfactoria en el 82.8 por ciento de los casos en estudio.


Subject(s)
Humans , Male , Female , Chlamydophila pneumoniae/pathogenicity , Dyspnea/diagnosis , Doxycycline/administration & dosage , Erythromycin/administration & dosage , Mycoplasma pneumoniae/pathogenicity , Pneumonia/diagnosis , Pneumonia/pathology , Radiography, Thoracic/methods , Roxithromycin/administration & dosage , Cough/diagnosis , Clarithromycin/pharmacology , Doxycycline/pharmacology , Erythromycin/pharmacology , Influenza, Human/complications , Medical Records , Roxithromycin/pharmacology
7.
Saudi Medical Journal. 2005; 26 (12): 1926-1929
in English | IMEMR | ID: emr-74765

ABSTRACT

To estimate the seroprevalence of IgG and IgA antibodies against Chlamydia pneumoniae [C. pneumoniae] among a sample of the Saudi population, and to evaluate whether there is a relationship between seropositivity to chronic infection with C. pneumoniae and the manifestation of symptomatic coronary heart disease [CHD]. We collected 273 sera samples from CHD patients and 273 sera samples from healthy matched controls from the Western region of Saudi Arabia during the period from November 2004 to May 2005. We tested anti-chlamydial IgG and IgA antibodies using enzyme-linked immunosorbent assay technique. We found 239 [87.5%] patients and 213 [78%] controls positive for C. pneumoniae IgG antibodies. However, 58 [21.2%] patients and 55 [23.9%] controls were positive for C. pneumoniae IgA antibodies. These results indicate a significant correlation between the presence of IgG antibodies and the development of CHD [p=0.003]. Data of this study showed that the presence of IgG antibodies has a 2-fold increase risk in development of CHD. We found no significant correlation between the existence of IgA antibodies and CHD. Our study indicates that C. pneumoniae infection plays an important role in the development of CHD in the Saudi community, emphasizing the importance of developing strategies for prevention and control against this type of bacterial infection. However, we need further study throughout the Kingdom to approve these results in all regions


Subject(s)
Humans , Chlamydophila pneumoniae/pathogenicity , Comorbidity , Seroepidemiologic Studies , Risk Factors , Coronary Disease/etiology
8.
Infectio ; 8(4): 250-251, dic. 2004. tab, graf
Article in Spanish | LILACS | ID: lil-422725

ABSTRACT

Chlamydia pneumoniae es un patógeno mundialmente reconocido como causante de infecciones del tracto respiratorio en humanos, se caracteriza por ser un microorganismo intracelular obligado. Al presente, se ha comprobado su presencia en placas ateromatosas por múltiples técnicas como la inmunohistoquímica, la microscopía electrónica y la reacción en cadena de la polimerasa (PCR). La enfermedad aterosclerótica, es responsable de muchos de los accidentes cerebrovasculares y cardiovasculares. Sin embargo el papel patogénico de este microorganismo en dicha enfermedad aun no es claro. En este estudio, por medio de ka reacción en cadena de la polimerasa (PCR) se logró comprobar la presencia de C. pneumoniae en el 28 por ciento de 93 muestras de tejido vascular provenientes de pacientes que fueron sometidos a cirugía de revascularización quirúrgica. La presencia de este microorganismo en tejido vascular de pacientes con enfermedad coronaria podría considerarse como un factor de riesgo cardiovascular para el desarrollo de aterosclerosis y enfermedades cerebrovasculares


Subject(s)
Arteriosclerosis/etiology , Chlamydophila pneumoniae/isolation & purification , Chlamydophila pneumoniae/pathogenicity , Chlamydia Infections , Polymerase Chain Reaction
9.
São Paulo; s.n; 2004. [53] p. ilus, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-403673

ABSTRACT

No decorrer de 11 anos de pesquisa, acompanhamento de pacientes e aperfeiçoamento dos métodos de análise, foi nos possível chegar a uma compreensão mais profunda de uma cardiopatia bastante comum em idosos: a estenose aórtica degenerativa. Trata-se de valvopatia que apresenta prevalência de dois porcento quando na forma grave. Essa afecção, na forma grave, apresenta história natural desfavorável, com mortalidade em dois anos de evolução, de 20 a 30 por cento e, em cinco anos, de aproximadamente 50 por cento. Ademais não dispomos de tratamento clínico eficaz para essa afecção. Estudamos o comportamento de idosos submetidos à valvoplastia por cateter balão e vimos que após alguns meses ocorre reestenose valvar. Outro aspecto estudado foi o perfil clínico de idosos com estenose aórtica grave e pudemos estabelecer que o sintoma mais freqüente é dispnéia; hiperclesterolemia ocorreu em 71 por cento dos idosos estudados; hipertrofia ventricular esquerda não é achado comum nessa população; e os parâmetros obtidos por meio do ecodopplercardiograma indicaram que a maioria apresentava boa função ventricular esquerda. Além disso, verificamos que os homens apresentam pior adaptação ventricular quando confrontados com as mulheres / During the past 11 years of research, patients attendance and increase of analysis method, we were able to get into a better comprehension about a very common cardiopathy among the elderly the degenerative aortic stenosis. This disease can reach two percent when it is in the worst step. This disease in the worst step has na unfavorable natural history because, after two years of the evolution, it shows a mortalitywhitin twenty percent to thirty percent and after five years, the mortality is approximately 50 per cent. Besides, there is no appropriate clinical treatment for this ilness. We had study the behaviors of the elderly subjected to the ballon aortic calvuloplasty and we concluded that after a few months occurs the valve restenosis. Other aspect studied was the clinical profile of the elderly with severe aortic stenosis and we established that the frequently symptom is the dyspnea; the hypercholesterolemia appeared in 71 per cent of the group menttionedbefore: the left ventriicule hypertrophy is not common to appearin this group; and the obtained parameter in order to the ecodopplercardiography were indicating that the majority of the gropu was with a good left ventricular function...


Subject(s)
Humans , Male , Female , Aged , Aged , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/etiology , Chlamydophila pneumoniae/pathogenicity , Echocardiography, Doppler/methods , In Situ Hybridization/methods , Immunohistochemistry , Prognosis , Prospective Studies
10.
Acta méd. colomb ; 26(5): 221-230, sept.-oct. 2001. tab, graf
Article in Spanish | LILACS | ID: lil-358364

ABSTRACT

Objetivo. Determinar el comportamiento de la proteína C reactiva, del fibrinógeno y de los leucocitos totales con relación a la respuesta inmunológica mediada por anticuerpos de tipo IgG contra Chiamydia pneumoniae, Helicobacter pylori y citomegalovirus en un grupo de personas con y sin factores de riesgo cardiovascular en Florencia, Caquetá. Diseño. Estudio analítico de corte transversal (prevalencia), poblacional, en 251 sujetos. Material y método. Muestra obtenida por conveniencia entre febrero y noviembre de 1999 para conformar dos grupos de acuerdo con criterios previamente establecidos. El grupo con factores de riesgo cardiovascular: hipertensos, diabéticos, obesos, dislipidémicos, fumadores y sedentarios, fue de 135 personas. Se hicieron mediciones cuantitativas de la proteína C reactiva (PCR), del fibrinógeno y de los leucocitos, y cualitativas de la serorrespuesta a los gérmenes investigados. Se valoraron las relaciones existentes y se estableció un nivel de significancia para p menor de 0,05. Resultados. La edad promedio general fue de 54,34 años (IC95 por ciento: 53,47-55,22). Los hombres fueron 127 (50,6 por ciento) y las mujeres 124 (49,4 por ciento). Encontramos una respuesta serológica positiva para Chiamydia pneumoniae en 162 personas (64,5 por ciento), para Helicobacter pylori en 193 (76,9 por ciento) y para citomegalovirus en 221 (88 por ciento). La media general para la proteína C reactiva (PCR) fue de 4,52 mg/dL (IC95 por ciento: 4,27-4,76), la del fibrinógeno 337,97 mg/dL (IC95 por ciento: 326,62-349,33) y la de los leucocitos de 7.844 por mL de sangre (IC95 por ciento: 7.626-8.062). La media global comparativa de la PCR y del fibrinógeno fue significativa entre los dos grupos (p<0,0001), no así la de los leucocitos, (p = 0,5). La seropositividad para C. pneumoniae, a diferencia de los otros patógenos, también fue significativa con respecto a los niveles de la PCR y del fibrinógeno, (p< 0,05). El nivel de asociación, determinado por el coeficiente Eta, fue menor en el grupo con factores de riesgo cardiovascular...


Subject(s)
Chlamydophila pneumoniae/immunology , Chlamydophila pneumoniae/pathogenicity , Heart Diseases , Helicobacter pylori , Inflammation/complications , Inflammation/diagnosis , Inflammation/etiology , Risk Factors
11.
Rev. méd. Chile ; 128(2): 201-5, feb. 2000.
Article in Spanish | LILACS | ID: lil-258118

ABSTRACT

Epidemiological and clinical studies attribute to Chlamidia pneumoniae infections a pathogenetic role in atherosclerotic vascular lesions. We report two patients in whom this infection was followed by acute coronary events. A 51 years old male presented with a right lower lobe pneumonia and a positive immunofluorescence serology for Chlamidia pneumoniae, with a IgM titer of 1/64. On the second day of evolution, he experienced an acute myocardial infarction. A coronary arteriography demonstrated a 80 percent obstruction of anterior coronary artery and an angioplasty was performed. A 84 years old male was admitted with a right lower lobe pneumonia and a positive serology for Chlamidia pneumoniae, with an IgM titer of 1/32. On the fourth day of evolution, he developed unstable angina with electrocardiographic changes. A coronary arteriography demonstrated a three vessel disease. In both cases, a tight chronological association was observed between Chlamidia pneumoniae infection and acute coronary events


Subject(s)
Humans , Male , Middle Aged , Coronary Artery Disease/etiology , Chlamydia Infections/complications , Chlamydophila pneumoniae/pathogenicity , Pneumonia, Bacterial/complications , Ceftriaxone/administration & dosage , Chlamydia Infections/drug therapy , Doxycycline/administration & dosage
13.
Rev. méd. Chile ; 126(12): 1483-9, dic. 1998. tab, graf
Article in Spanish | LILACS | ID: lil-243746

ABSTRACT

Background: The prevalence of Chlamydia pneumoniae infection varies according to the population and geografic area studied. Aim: To evaluate the incidence of Chlamydia pneumoniae infection in Chilean subjects with community acquired pneumonia. Patients and methods: Between 1995 and 1997, patients with community acquired pneumonia attending two emergency rooms in Santiago, were studied. The diagnosis of Chlamydia pneumoniae infection was based on the detection of Chlamydia pneumoniae specific IgG antibody in samples from both the acute and convalescent phase, using an indirect microimmunofluorescent technique. Evidence of present infection was defined as seroconversion, a significant increase in the titer of the second sample and an initial titer equal or greater than 1/512. Results: During the study period, 160 patients consulted and seven (six male), aged 54ñ27 years old, complied with the diagnostic criteria of present Chlamydia pneumoniae infection. These patients had no special clinical or radiological features. Five of seven patients improved without any specific treatment. Conclusions: Eight percent of this sample of patients with community acquired pneumonia had Chlamydia pneumoniae infection. This agent should be included in the design of empiric treatment schemes, although our results cast doubt on the pathogenic role of Chlamydia pneumoniae in pneumonia


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Chlamydia Infections/epidemiology , Chlamydophila pneumoniae/isolation & purification , Pneumonia, Bacterial/etiology , Immunoglobulin G , Chile/epidemiology , Incidence , Chlamydophila pneumoniae/pathogenicity , Pneumonia, Bacterial/epidemiology
14.
Rev. chil. infectol ; 15(1): 18-26, 1998. ilus, tab
Article in Spanish | LILACS | ID: lil-232961

ABSTRACT

Como patógeno respiratorio, C. pneumoniae ha sido asociada con crisis de asma bronquial como uno de varios factores desencadenantes. Las evidencias seroepidemiológicas, histopatológicas y de biología molecular que relacionan además la infección por C. penumonaie con la producción de angiopatía coronaria van en aumento. Se revisan los antecedentes que han permitido encontrar esta relación, incluyendo nuestra propia experiencia, aunque se desconoce el grado de responsabilidad atribuible a la infección en esta afección degenerativa


Subject(s)
Humans , Asthma/microbiology , Cardiovascular Diseases/microbiology , Chlamydophila pneumoniae/pathogenicity , Atherosclerosis/microbiology , Molecular Biology , Fluorescent Antibody Technique, Indirect
15.
Rev. chil. infectol ; 15(1): 27-31, 1998.
Article in Spanish | LILACS | ID: lil-232962

ABSTRACT

Se revisan sumariamente las publicaciones respecto a cuadro clínico, diagnóstico, epidemiología y tratamiento de las neumonias por C. pneumoniae, incluyendo los datos chilenos. Los estudios respecto a este nuevo agente causal de neumonias son todavía escasos y limitados, por lo que la información es aún incompleta y cambiante. El conjunto de los datos sugiere que C. pneumoniae causa frecuentemente neumonias adquiridas en la comunidad de carácter leve, las que se pueden complicar con coinfecciones por otras bacterias, tomando en este caso un curso más grave que requiere de hospitalización. Por su frecuencia, este agente debe ser contemplado en nuestro país en la terapia antimicrobiana de las neumonias adquiridas en la comunidad. Si se considera que el cuadro clínico radiográfico es poco característico, que el diagnóstico etiológico es lento y adolece de falta de sensibilidad y especificidad y que los exámenes no están disponibles en la mayoría de los servicios, es razonable concluir que en la gran mayoría de los casos el tratamiento deberá indicarse sobre bases empíricas. El esquema de manejo de la American Thoracic Society hace posible un manejo adecuado en la mayoría de los enfermos


Subject(s)
Humans , Chlamydophila pneumoniae/pathogenicity , Pneumonia/microbiology , Azithromycin/therapeutic use , Chlamydia Infections/epidemiology , Clarithromycin/therapeutic use , Erythromycin/therapeutic use , Fluorescent Antibody Technique, Indirect , Tetracycline/therapeutic use
16.
Egyptian Journal of Medical Laboratory Sciences. 1998; 7 (2): 13-9
in English | IMEMR | ID: emr-47931
17.
Arch. Inst. Cardiol. Méx ; 67(1): 17-23, ene.-feb. 1997. ilus
Article in Spanish | LILACS | ID: lil-195860

ABSTRACT

Aunque los factores aterogénicos más importantes han sido extensamente estudiados, hay otros más cuya verdadera importancia causal no ha sido bien definida. Existen evidencias patológicas e inmunológicas acerca del papel de diversos agentes infecciosos en la génesis o el desarrollo de la aterosclerosis. Recientemente se ha ligado a la Chlamydia pneumoniae con la aterogénesis al encontrarse evidencia inmunológica de la presencia de este germen en lesiones ateromatosas humana. Se estudiaron 16 especímenes de aortas, obtenidos en autopsias de individuos muertos por cardiopatía isquémica. Se determinó la infección de Ch. pneumoniae, mediante una técnica de inmunofluorescencia con anticuerpo monoclonal murino específico. La reacción positiva se encontró en placas fibrolípidas avanzadas, no ulceradas, de dos pacientes (13 por ciento), incidencia comparable a la informada en la literatura mundial. No se conoce cuál es la verdadera relación entre la infección y la aterogénesis y si la primera comienza o agrava el proceso ateroscleroso o es un fenómeno independiente del proceso arterial.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aorta/microbiology , Aorta/pathology , Atherosclerosis/etiology , Chlamydophila pneumoniae/pathogenicity , Fluorescent Antibody Technique
20.
Rev. chil. enferm. respir ; 12(3): 145-50, jul.-sept. 1996. tab
Article in Spanish | LILACS | ID: lil-196134

ABSTRACT

La evidencia de exposición previa a Chlamydia pneumoniae fue evaluada en 353 sujetos sanos de Santiago de Chile. Se efectuó determinación sérica de anticuerpos (IgG) específicos anti-Chlamydia pneumoniae con antígenos de la cepa AR-39 proporcionados por la Washington Research Foundation, con técnica de inmunofluorescencia indirecta. Títulos iguales o mayores de 1:16 fueron considerados positivos. 134 sueros fueron positivos para Chlamydia penumoniae, con título máximo de 1:256. Concluimos que en esta muestra la seroprevalencia fue de 38 por ciento y que en un título igual o mayor de 1:512 sugiere el diagnóstico de infección aguda por Chlamydia pneumoniae


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Adolescent , Adult , Middle Aged , Chlamydia Infections/epidemiology , Chlamydophila pneumoniae/pathogenicity , Serologic Tests , Age Distribution , Chlamydia Infections/etiology , Chlamydia Infections/parasitology , Chlamydophila pneumoniae/isolation & purification , Fluorescent Antibody Technique, Indirect , Sex Distribution
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