Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0042384 (vasculitis)
 20,525 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Whereas clinical descriptions of grotesque lymphedema and standard light microscopy in human filariasis have elucidated the natural progression of this disease, the link between the nematode and vascular abnormalities including elephantiasis remains poorly understood. Accordingly, we examined the nature and distribution of lymphatic and blood vascular derangements in a variety of tissues and organs from 37 ferrets acutely and chronically infected with Brugia malayi and in 15 patients with Wuchereria bancrofti or Brugia malayi infestation (resected skin, subcutaneous tissue, and lymph nodes) using light and transmission electron microscopy, immunohistochemistry, and in vivo microscopy. In ferrets, eosinophilic abscesses and epithelioid and giant cell granulomas with fragmented worms in various stages of disintegration were found in multiple organs. Blood microvasculopathy consisted of endothelial hyperplasia, focal thickening and stenosis, vessel obliteration with marked perivascular infiltration of lymphocytes, plasma cells, eosinophils, and numerous large macrophages laden with a coarse golden-brown pigment. Endothelial ballooning and swelling, pavementing, denuding, scarring, and sludge formation were seen along with high endothelium in atypical locations. Dilated lymphatics were most prominent near adult worms and showed plump endothelium, thickened walls and valves, thrombus formation, and often perilymphangitis and adjacent tissue fibrosis. In vivo microscopy showed wriggling live adult worms in dilated incompetent sludge-filled groin lymphatics even when microfilaremia and peripheral edema were absent. In human tissues, in addition to "pachyderm" skin changes (keratosis, papillomatosis, acanthosis and collagen deposition), there was blood vessel and lymphatic vasculopathy similar to ferrets (angiocentric inflammation, congestion, vasculitis, thrombosis, thickened vessel walls, dilated lymphatics, lymphangitis, reactive lymph nodal hyperplasia and nodal fibrosis). These changes reflect generalized endothelial damage due to worm products, physical injury to valves and vessel walls from lymphatic-dwelling live worms, and host immune reactivity. Whereas adult worms target the lymphatic apparatus, their offspring and the host immune response primarily affects the blood microvasculature.
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PMID:Vascular abnormalities in experimental and human lymphatic filariasis. 179 28

Critical conditions had been established in 21 (23.1%) of 91 patients with systemic connective tissue diseases for a 12 year period: renal failure (most often), sepsis, pericarditis with cardiac tamponade, hemorrhagic diathesis, terminal arteritis with gangrene, gastrointestinal perforations with peritonitis, etc. The corticosteroids applied in high doses and predominantly parenterally and the immunosuppressors are the main drugs used in the treatment of these conditions. Plasmapheresis when possible is a useful supplement. The prognosis of the acute critical conditions depends mainly on the affected organ (more favorable in pericarditis with tamponade and unfavorable in renal failure and gastrointestinal perforations with peritonitis (and on the basic disease) more optimistic in systemic lupus erythematodes and very pessimistic in nodal periarteritis and other allergic vasculitis).
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PMID:[The problems of treating acute critical states in diffuse connective tissue diseases]. 321 40

Inflammatory pseudotumour of lymph nodes is a benign type of lymphadenopathy recently described as a peculiar nodal reaction, which displays distinctive clinical and histological features. The origin of the disease is unknown although an inflammatory etiology has been suggested. We study a new case of inflammatory pseudotumour of lymph nodes which had an unusual clinical presentation, with lymphadenopathy on both sides of the diaphragm and enlargement of liver and spleen. In addition, focal fibrinoid vascular necrosis was observed on histological examination, an unusual finding which makes difficult the differential diagnosis with other lesions, particularly vasculitis.
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PMID:[Disseminated inflammatory pseudotumor of the lymph nodes]. 818 87

We report six cases of hyperplastic mesothelial cells located in the sinuses of lymph nodes. All patients but one had a concurrent serosal fluid collection (two pericardial, two pleural, one abdominal) at the time of the lymph node biopsy. All effusions cleared with treatment of the underlying disorder, which included lymphoproliferative processes, congestive heart failure, and inflammatory diseases (Dressler syndrome, vasculitis, and glomerulonephritis). Four cases were associated with vascular prominence of the involved nodal sinuses, a feature that may reflect the cause of the underlying effusion or support the transient persistence of benign mesothelial cells in lymph nodes. Two cases were characterized by distention of the nodal sinuses by sheets of mitotically active mesothelial cells. The differential diagnosis includes metastatic carcinoma, keratin-positive dendritic cells native to lymph nodes, and metastatic malignant mesothelioma. Because the latter shares both clinical and morphological features with cases of benign mesothelial cells in lymph nodes, we believe that this distinction may not always be possible in a given biopsy specimen and therefore that careful clinical follow-up is required in such cases.
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PMID:Hyperplastic mesothelial cells in lymph nodes: report of six cases of a benign process that can stimulate metastatic involvement by mesothelioma or carcinoma. 956 82

Churg-Strauss syndrome is a systemic vasculitis characterized by asthma, tissue and blood eosinophilia, and granulomatous vasculitis. Lymph node involvement as part of systemic disease or as the primary site of involvement is rare. We report a single case of primary (isolated) nodal Churg-Strauss syndrome occurring in an 11-year-old boy with asthma, fever, night sweats, and cervical adenopathy. The clinical diagnosis was lymphoma. The unusual presentation of Churg-Strauss syndrome limited to lymph nodes is important to recognize and diagnose correctly because the administration of steroid therapy is associated with a favorable outcome.
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PMID:Lymph node manifestations of limited Churg-Strauss syndrome. 1103 64

Systemic vasculitis (SV) is characterized by generalized vascular bed lesion involving vessels of different sizes into a pathological process. The paper presents the results of a follow-up of 500 patients with different forms of SV, by making studies of immunity and the hemostatic system, angioscanning, Doppler ultrasound study of vessels, electrophysiological studies (rheoencephalography, encephalography), computed and magnetic resonance imaging of the brain, and visceral ultrasonography. A variety of clinical symptoms and involvement of different organs determine the interest of physicians of different specialties in the diagnosis and treatment of SV. The involvement of the nervous system in the process occurs in all forms of vasculitis, by afflicting the central, peripheral, and autonomic nervous systems with the development of regulatory and functional disorders. Lesions of the visual organ are typical of nonspecific aortoarteritis (Takayasu's disease), Wegener's granulomatosis, giant-cell arteritis. Recurrent uveitis is characterized in Behcet's syndrome. Cutaneous manifestations are included into the classification criteria of nodal polyartheritis, hemorrhagic vasculitis, and Kawasaki's disease. ENT and oral involvement are observed in Wegener's granulomatosis.
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PMID:[Systemic vasculitis as an interdisciplinary problem]. 1565

The most common extraintestinal manifestations of Crohn's disease and ulcerative colitis are iritis and uveitis, primary sclerosing cholangitis (PSC) and nodal erythema and pyoderma gangrenosum. Complications within the cardiovascular system seem to be uncommon, but there are no systematic investigations concerning the epidemiology of these manifestations. There are more than 100 cases reported about pericarditis and perimyocarditis in patients with inflammatory bowel disease. Other patients with Crohn's disease or ulcerative colitis suffer from vasculitis, representing a further mechanism of inflammatory diseases of the cardiovascular system. There are several case reports showing a combination of Takayasu's arteritis and Crohn's disease, and cross-reacting antibodies against gut mucosa and aortic tissue were found. Some patients developed thrombotic complications by activating the coagulation system, which can result in atrial thrombi, embolism of the pulmonary arteries, myocardial infarction and disseminated intravascular coagulopathy (DIC). Furthermore, a few case were reported about atrio ventricular blocks, amyloidosis of the heart, dilative cardiomyopathy and endomyocardial fibrosis in patients with chronic inflammatory bowel disease. Here, a 27-year-old patient with known ulcerative colitis for 2 years is reported, who presented in the authors' department with unstable angina pectoris. Coronary angiographic examination was immediately performed and diffuse intracoronary thrombi were found, which could be removed by the catheter procedure. A myocardial infarction did not develop. Because of positive anti neutrophil cytoplasmic antibodies (p-ANCA) a p-ANCA-positive arteritis of the coronary vessels with intracoronary thromboembolism due to ulcerative colitis was diagnosed. Systematic studies or investigations concerning the epidemiology of the cardiovascular complications are still lacking, so that an overview about the published data is given.
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PMID:[Chronic inflammatory bowel disease and cardiovascular complications]. 1680 21

In summer 1996, a 31-year-old woman developed arthralgia, subfebrility, and papular efflorescences on the skin, clinically and histologically suspect of vasculitis, to be followed by severe lung edema and anuria, with serum creatinine up to 1182 mol/L in the autumn 1996. The administration of high dose corticosteroids, plasmapheresis and hemodialysis resulted in regression of the clinical symptoms and considerable improvement of the kidney function. Kidney biopsy revealed sclerosing extracapsular glomerulonephritis with extensive fibrocellular crescents. Thereafter, the patient felt well, however, renal insufficiency showed gradual progression, so the patient was continuously treated with hemodialysis from January 1998. Two more episodes of severe lung edema occurred at the beginning of 1998 and in the autumn 1998, with rapid symptom regression upon the administration of high dose corticosteroids. In April 1998, during the episode of staphylococcal sepsis, multiple nodose shadows of the lungs were detected, to persist asymptomatically for the next six months. Toward the end of November, nodal enlargement and disruption, with the formation of cavitations occurred. The patient's general condition deteriorated gradually, and she died from respiratory arrest in February 1999. The patient received corticosteroids during most of the disease course, and cyclophosphamide only once, during the first episode of lung edema. On autopsy, a number of cavitations were observed in the lungs, with necrotic areas of a varying size and numerous cicatrices in the rest of pulmonary parenchyma. Besides fibrosis and areas of necrosis, histology showed palisading granulomas, with erythrocytes, macrophages and siderophages within the alveoles. Apart from candidal colonization of the airways, which developed in the terminal stage of the disease, all tests for fungi, Staphylococcus aureus and Mycobacterium tuberculosis were repeatedly negative. ANCA and other immunoassays were also negative on several occasions. Differential diagnosis of multiple nodose lesions of the lungs is discussed. The authors believe the patient suffered from Wegener's granulomatosis.
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PMID:[Multiple nodose shadows of the lungs as a differential diagnosis problem]. 1693 41

Benzodiazepines belongs to one of the most commonly used anxiolytic and anticonvulsant drugs in the world. Full description of toxic effects on different organs is lacking for nearly all the current benzodiazepines. The aim of the current work was to study the immunologic and vascular changes induced by sub-chronic administration of alprazolam and clonazepam in non-stressed and stressed adult male albino rats. Forty-two adult male albino rats were divided into 6 groups (I): (Ia) Negative control rats, (Ib): Positive control rats received distilled water, (II): Stressed rats, (III): Non-stressed rats received daily oral dose of clonazepam (0.5 mg/kg), (IV): Stressed rats received daily oral dose of clonazepam (0.5 mg/kg), (V): Non-stressed rats received daily oral dose of alprazolam (0.3 mg/kg). (VI): Stressed rats received daily oral dose of alprazolam (0.3 mg/kg). At the end of the 4th week, total leukocyte count (WBCs) and differential count were determined, anti-sheep RBC antibody (Anti-SRBC) titer and interleukin-2 (IL-2) level were assessed, thymus glands, lymph nodes, spleens and abdominal aortae were submitted to histopathological examination. Alprazolam was found to induce a significant increase in neutrophil count and a significant decrease in lymphocytes, anti-SRBC titer and IL-2 level with severe depletion of the splenic, thymal and nodal lymphocytes, accompanied by congestion and eosinophilic vasculitis of all organs tested in comparison to clonazepam treated rats. Stress enhanced the toxic effects. It was concluded that the immune system and blood vessels can be adversely affected to a greater extent by short-term chronic administration of alprazolam than by clonazepam, and these toxic effects are aggravated by stress.
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PMID:Differential effects of alprazolam and clonazepam on the immune system and blood vessels of non-stressed and stressed adult male albino rats. 2205 54

Anaplastic large cell lymphoma (ALCL) is a T-cell lymphoma histologically characterized by expression of CD30, a cell surface receptor present on activated T cells and B cells. ALCL may occur in a primary cutaneous form or as systemic ALCL with lymph node involvement. Anaplastic lymphoma kinase (ALK) is a tyrosine kinase that induces neoplastic transformation as a result of translocational fusion with an activating promoter. The presence of ALK can be used to distinguish between primary cutaneous ALCL and systemic nodal ALCL in certain cases. Primary cutaneous and systemic ALCL metastatic to the skin are histologically indistinguishable. "Leukemic vasculitis"--an uncommon finding in cases of cutaneous leukemia and even more exceptional in cutaneous lymphoma--refers to a pattern of vasculitis occurring as a direct result of infiltrating neoplastic cells. We report a fatal case of recurrent ALK-negative ALCL presenting as ulcerating skin lesions in a patient previously treated with the new anti-CD30 agent brentuximab vedotin. Biopsy revealed a necrotizing vasculitis resulting from the infiltration of neoplastic cells reminiscent of the patient's primary malignancy. We review the clinical and pathological findings of ALCL and present this case to highlight a subtle diagnostic clue in assessing recurrence of cutaneous lymphoma.
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PMID:Recurrent ALK-negative anaplastic large T-cell lymphoma presenting as necrotizing vasculitis. 2329 83


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