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Página 1 a partir de 110 resultados
Lack of the Transcription Factor Hypoxia-Inducible Factor 1α (HIF-1α) in Macrophages Accelerates the Necrosis of Mycobacterium avium-Induced Granulomas.
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The establishment of mycobacterial infection is characterized by the formation of granulomas, which are well-organized aggregates of immune cells, namely, infected macrophages. The granuloma's main function is to constrain and prevent dissemination of the mycobacteria while focusing the immune
Interleukin-17 limits hypoxia-inducible factor 1α and development of hypoxic granulomas during tuberculosis.
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Mycobacterium tuberculosis (Mtb) is a global health threat, compounded by the emergence of drug-resistant strains. A hallmark of pulmonary tuberculosis (TB) is the formation of hypoxic necrotic granulomas, which upon disintegration, release infectious Mtb. Furthermore, hypoxic necrotic granulomas
Immunometabolism within the tuberculosis granuloma: amino acids, hypoxia, and cellular respiration.
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Tuberculosis (TB) granulomas are compact, organized agglomerations of infected and uninfected macrophages, T cells, neutrophils, and other immune cells. Within the granuloma, several unique metabolic adaptations occur to modify the behavior of immune cells, potentially favoring bacterial persistence
Effect of long-term hypoxia on protein synthesis in granuloma and in some organs in rats.
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A Woman in Her 80s With Weakness, Hypoxia, and Bone Marrow Granulomas.
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A white woman in her 80s presented to the ED with nonproductive cough, fever, and 2 weeks of progressive generalized weakness. Previously ambulatory, she now was so weak she required assistance out of bed.
Hypoxia, hypoxia-inducible factor-1α and vascular endothelial growth factor in a murine model of Schistosoma mansoni infection.
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Schistosomiasis mansoni is a chronic parasitic disease where much of the symptomatology is attributed to granuloma formation, an immunopathological reaction against Schistosoma eggs. To more clearly understand the immunopathology of schistosomiasis, the tissue microenvironment generated by S.
Beau's lines and multiple periungueal pyogenic granulomas after long stay in an intensive care unit.
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A child developed multiple Beau's lines and periungueal pyogenic granulomas after admission to the intensive care unit. Immobilization, hypoxia, and drugs might have acted as potential causative factors.
Anti-vascular endothelial growth factor treatment normalizes tuberculosis granuloma vasculature and improves small molecule delivery.
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Tuberculosis (TB) causes almost 2 million deaths annually, and an increasing number of patients are resistant to existing therapies. Patients who have TB require lengthy chemotherapy, possibly because of poor penetration of antibiotics into granulomas where the bacilli reside. Granulomas are
Expression of hypoxia-inducible factor (HIF)-1a-vascular endothelial growth factor (VEGF)-inhibitory growth factor (ING)-4- axis in sarcoidosis patients.
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BACKGROUND
Sarcoidosis is a granulomatous disorder of unknown etiology. The term of immunoangiostasis has been addressed by various studies as potentially involved in the disease pathogenesis. The aim of the study was to investigate the expression of the master regulator of angiogenesis hypoxia
Yeast Transcriptome and In Vivo Hypoxia Detection Reveals Histoplasma capsulatum Response to Low Oxygen Tension.
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Although there is growing understanding of the microenvironmental conditions fungal pathogens encounter as they colonize their host, nothing is known about Histoplasma capsulatum's response to hypoxia. Here we characterized hypoxia during murine histoplasmosis using an in vivo hypoxia detection
[Shifts in the constant potential in the structures of the rat brain in focal ischemia and systemic hypoxia].
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The role of spreading depression (SD) in the development of ischemic brain damage in rats was studied in two models: focal cortical ischemia provoked by a photothrombotic occlusion of the middle cerebral artery (MCA) and systemic hypoxia induced by breathing with 0.8% carbon monoxide (CO).
Horizontal acquisition of a hypoxia-responsive molybdenum cofactor biosynthesis pathway contributed to Mycobacterium tuberculosis pathoadaptation.
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The unique ability of the tuberculosis (TB) bacillus, Mycobacterium tuberculosis, to persist for long periods of time in lung hypoxic lesions chiefly contributes to the global burden of latent TB. We and others previously reported that the M. tuberculosis ancestor underwent massive episodes of
Revisiting hypoxia therapies for tuberculosis.
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The spectre of the coming post-antibiotic age demands novel therapies for infectious diseases. Tuberculosis (TB), caused by Mycobacterium tuberculosis, is the single deadliest infection throughout human history. M. tuberculosis has acquired antibiotic resistance at an alarming rate
[A pulmonary tumorlet with caseous granuloma associated with atypical mycobacterium].
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We encountered a case of pulmonary tumorlet with caseous granuloma associated with atypical mycobacterium. A 73-year-old woman was admitted to the hospital because a chest x-ray film showed enlargement of an abnormal shadow in the middle lobe of the right lung. Primary lung cancer was suspected and
Macrophage arginase-1 controls bacterial growth and pathology in hypoxic tuberculosis granulomas.
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Lung granulomas develop upon Mycobacterium tuberculosis (Mtb) infection as a hallmark of human tuberculosis (TB). They are structured aggregates consisting mainly of Mtb-infected and -uninfected macrophages and Mtb-specific T cells. The production of NO by granuloma macrophages expressing nitric
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