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Obligate intracellular bacterium Chlamydia pneumoniae causes respiratory tract infections such as community-acquired pneumonia. During infection, C. pneumoniae induces inflammatory responses in host cells and the oxygen concentration at the infection sites subsequently decreases. Because hypoxic
Chlamydia trachomatis LGV (CtL2) causes systemic infection and proliferates in lymph nodes as well as genital tract or rectum producing a robust inflammatory response, presumably leading to a low oxygen environment. We therefore assessed how CtL2 growth in immortal human epithelial cells adapts to
Gamma interferon (IFN-γ)-mediated host responses play a central role in resolving genital Chlamydia trachomatis infections but may also result in persistence of the pathogen, which shows reduced susceptibility to antimicrobials. The antichlamydial function of IFN-γ is oxygen dependent, and the
OBJECTIVE
To identify risk factors for infection and severe illness due to Chlamydia pneumoniae.
METHODS
To identify risk factors for infection, we conducted a case-control study among nursing home residents who had onset of symptoms during December 1, 1999, to February 20, 2000. To identify risk
Genital tract infections with Chlamydia trachomatis (C. trachomatis) are the most frequent sexually transmitted disease worldwide. Severe clinical sequelae such as pelvic inflammatory disease (PID), tubal occlusion, and tubal infertility are linked to inflammatory processes of chronically infected
A 64-year-old male was admitted to our hospital with dyspnea and high fever. The patient had a relative bradycardia and severe hypoxemia. Velcr rales were heard throughout the entire lung fields. Leucocytosis was absent. Chest X-ray showed bilateral diffuse reticular shadows. Corticosteroid pulse
A previously healthy 48-year-old man presented to his primary care physician with high fever, dry cough and dyspnea. Pneumonia was diagnosed and intravenous administration of imipenem/cilastatin was begun, but his respiratory condition worsened and he was admitted to our hospital with severe
Chlamydiaceae are obligate intracellular bacteria that cause endemic trachoma, sexually transmitted diseases and respiratory infections. The course of the diseases is determined by local inflammatory immune responses and the propensity of the pathogen to replicate within infected host cells. Both
Chlamydia pneumoniae infections of the respiratory tract are common and are associated with acute and chronic diseases such as community-acquired pneumonia (CAP) and chronic obstructive pulmonary disease (COPD). Recent studies have shown that reduced environmental oxygen availability promotes
Infections with intracellular bacteria such as chlamydiae affect the majority of the world population. Infected tissue inflammation and granuloma formation help contain the short-term expansion of the invading pathogen, leading also to local tissue damage and hypoxia. However, the effects of key
A 75-year-old man first developed dyspnea and low-grade fever in late March. A chest X-ray film showed infiltration in the right lower lung field and blood gas analysis revealed severe hypoxemia. Accordingly, he was diagnosed as having pneumonia and was admitted to our hospital on March 11, 2003.
BACKGROUND
Chlamydia trachomatis (C. trachomatis) is the most frequent bacterial sexual infection in women. Pregnant women screening is controversial, with asymptomatic colonization occurring in 2-20%, and 40-70% newborns can be infected.
OBJECTIVE
The aim of this work is to characterise C.
IFN-γ has an important role in the adaptive immune response against intracellular pathogens. In urogenital tract (UGT) infections with the obligate intracellular pathogen Chlamydia trachomatis, IFN-γ-mediated control of chlamydial growth implies the JAK-STAT signaling cascades and subsequent
BACKGROUND
Chlamydia pneumoniae is a pathogen usually associated with respiratory pathology. It has been estimated that this agent causes 5 to 15% of all pneumonias but its incidence among hospitalised children with respiratory infections is unknown.
OBJECTIVE
Characterization of the Chlamydia
BACKGROUND
Cases of fatal hemorrhagic pneumonia need to be investigated for highly contagious viral causes. While not all hemorrhagic pneumonias are caused by very contagious agents, the etiology must be correctly determined in order to administer appropriate patient care.
OBJECTIVE
To determine