Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:3.2.1.17 (lysozyme)
 21,489 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The author discusses the risk factors that may be conducive to the development of postgonorrheal diseases in women. When only opportunistic microflora can be isolated from urogenital discharge, postgonorrheal diseases may develop in patients with a poor local immunity. Before gonorrhea treatment the cervical mucus lysozyme activity has been reduced 10-fold in these women, and the level of secretory IgA has been but 7.33% of the normal value.
Vestn Dermatol Venerol 1989
PMID:[The possibility of preventing post-gonorrhea diseases in women]. 272 9

Two cases of actinic granuloma are described with emphasis on distinctive clinical and histopathologic features, including immunoperoxidase staining for lysozyme and immunophenotyping of mononuclear leukocytes. Actinic granuloma presents in chronically sun-damaged skin as normally colored to erythematous papules that coalesce to form centrifugally enlarging annular patterns. By light microscopy, a granulomatous infiltrate of giant cells and histiocytes is seen to be intimately related to the presence of elastotic fibers in the upper dermis. Selective localization of lysozyme in the giant cells of the granuloma is apparent by a tertiary antibody immunoperoxidase technique. Determination of mononuclear leukocyte subsets with monoclonal antibodies reveals a predominance of helper T cells in the lymphocytic infiltrate associated with the granuloma. It is postulated that actinic granuloma represents a cell-mediated immune response to weakly antigenic determinants on actinically altered elastotic fibers.
Arch Dermatol 1986 Jan
PMID:Actinic granuloma. A clinical, histopathologic, and immunocytochemical study. 293 87

The large stellate and polygonal cells observed in eleven fibrous papules and two angiofibromas were examined immunohistochemically for alpha 1-antitrypsin and lysozyme. The positive findings suggest that these cells are related to histiocytes rather than nevomelanocytes.
J Am Acad Dermatol 1985 Jan
PMID:Alpha 1-antitrypsin and lysozyme in fibrous papules and angiofibromas. 298 60

Ten patients were treated with repeated leukophereses performed one to three times per week for 2-5 weeks. Two of the patients was cleared completely, four exhibited regression of more than one-half of the lesions, and four showed only a slight improvement. The therapy did not markedly affect the granulocyte count in peripheral blood, and the beneficial clinical response was not related to the number of polymorphonuclear leukocytes (PMNs) removed by leukophereses. During therapy, the activities of elastase, cathepsin G, lysozyme, and myeloperoxidase in PMNs were determined by spectrophotometry. PMNs isolated using a Haemonetics 30 blood-cell separator were about 50% deficient in these activities in comparison to cells obtained directly from peripheral blood. Thus, leukopheresis induces a marked degranulation of PMNs. Repeated leukophereses were found to generate significant variations in the activities of circulating PMN granule enzymes and in the levels of acid-soluble proteins. Remission or great improvement were observed in patients who, during therapy, exhibited decreased PMN elastase and cathepsin G activities, whereas a poor clinical response was accompanied by high enzymatic activities.
Arch Dermatol Res 1985
PMID:Leukopheresis for treatment of psoriasis: is therapeutical benefit related to reduced activities of neutral proteinases of polymorphonuclear leukocytes? 300 6

Twenty patients with chronic crural ulcerations refractory to previous treatment were subjected to local treatment with a solution of ovalbumin lysozyme in normal saline (1 mg/ml). Before this treatment cultures were made from the bottom of the ulcerations determining the type of the infecting micro-organism and its sensitivity to various concentrations of lysozyme. Good (5/20) and very good (15/20) results were obtained. No local or systemic unfavourable effect of lysozyme was noted. The ulcerations were cleared quickly of pus, granulation tissue developed, the inflammatory reaction around the ulcers decreased and pains were no longer felt. The cultured bacteria were insensitive in vitro to lysozyme concentrations applied in vivo. During the treatment with lysozyme the bacterial flora remained unchanged. The beneficial effect of lysozyme on wound healing may be due to its cationic influence on the cell membranes in the epithelium and to pH change in the ulcerations.
Przegl Dermatol
PMID:[Clinical trial of lysozyme treatment of crural ulcers in humans]. 307 93

In order to determine which structures in Propionibacterium acnes are most antigenic to severe acne patients, we studied the specificity of anti-P. acnes antibodies in serum from 15 nodulocystic acne patients and 5 normals. Complement fixation titers to P. acnes cell wall fractions were determined using guinea pig serum as a complement source. The mean titers of patients and normals to whole cells were 39.6 and 3 (p less than 0.1); to crude cell wall, 138 and 8 (p less than 0.01); and to protein and nucleic acid-free cell wall, 225 and 9.33 (p less than 0.001), respectively. The mean precipitin titer to P. acnes cytosol was 12.7 for patients and 0 for normals. Immunoelectrophoresis of cytosol from 8 P. acnes strains were developed with each of the 15 patient sera. A single broadly migrating anionic antigen was detected. The antigen was also present in P. acnes culture supernatants. Sephadex G-100 chromatography of cytosol revealed a single peak of antigenic reactivity at Mr = 100,000. Three patients' sera revealed a second weakly reacting antigen in the cytosol preparation. Twentyfold concentration of immunoglobulin from patient sera failed to reveal any other antigenic reactivities. The antigen was found to be resistant to nuclease, pronase, and lysozyme treatment; was precipitable with 70% ethanol; and was destroyed by sodium m-periodate--findings that are consistent with a carbohydrate structure.
J Invest Dermatol 1985 Jun
PMID:Antibody titers to Propionibacterium acnes cell wall carbohydrate in nodulocystic acne patients. 315 14

External application of ovalbumin Lysozyme in normal saline in enzyme concentration 1 mg/ml shortened evidently the time of healing of standard skin wounds in guinea pigs (p less than 0.00001) as compared to control groups. The inflammatory reaction around the wound was reduced also. No manifestations of allergy to ovalbumin lysozyme were noted. This favourable effect of lysozyme on wound healing seems to be related to the cationic influence of lysozyme on cell membranes of keratinocytes and on change of wound pH.
Przegl Dermatol
PMID:[Effect of ovalbumin lysozyme on healing of standard skin wounds in guinea pigs]. 326 40

The lysozyme activity in tissue samples from patients with lupus miliaris disseminatus faciei (LMDF), sarcoidosis and foreign body granuloma was investigated using the immunoperoxidase technique. The majority of epithelioid cells and giant cells in LMDF and sarcoidosis showed strong lysozyme staining in their cytoplasm. However, most macrophages and giant cells in foreign body granulomas, including granulomatous reactions to epidermal cysts and other foreign materials, stained weakly for lysozyme or were negative. These results suggest that LMDF is different from the foreign body reaction to inert substances, and may be induced by an immunological mechanism associated with cell-mediated immunity.
Br J Dermatol 1986 Aug
PMID:Immunohistochemical study of lysozyme in lupus miliaris disseminatus faciei. 352 52

Sun-exposed and sun-protected skin obtained at post mortem from the nape of the neck in 14 subjects was immunostained using antisera to elastin, lysozyme, amyloid P component, and the plasma protease inhibitors alpha-I antitrypsin, alpha-I antichymotrypsin and alpha-2 macroglobulin. Both the normal elastic fibres in sun-protected skin, and elastosis in sun-exposed skin were positively immunostained for elastin, lysozyme and amyloid P component. Collagen fibres were unstained. No immunostaining of normal elastic fibres or elastosis in the skin was obtained with antisera to alpha-I antitrypsin, alpha-I antichymotrypsin or alpha-2 macroglobulin. It was concluded that the elastosis in sun-exposed skin does contain elastic fibres. The absence of immunostaining for plasma protease inhibitors probably indicates that the elastic material is mature, and not newly-formed.
Br J Dermatol 1987 Jul
PMID:Elastic fibres in normal and sun-damaged skin: an immunohistochemical study. 365 33

The presence of lysozyme in human epidermis was determined in extracts from the surface of human skin and in sonicates of human epidermal cell preparations with the use of a bacteriolytic assay employing Micrococcus lysodeikticus cell walls as substrate. Preincubation of the extracts with the Fab portion of the IgG fraction of an antiserum to human lysozyme abolished the lytic activity of the extracts showing the specificity of the assay. De novo synthesis of lysozyme by human epidermal cells was demonstrated by radiolabeling studies. Human epidermal cells cultured in serum-free medium and pulsed with [3H]leucine for 24 h were sonicated and fractionated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. A major band at Mr 14,500 exhibited both immunoreactivity with a rabbit antihuman lysozyme antibody and radioactivity. Gel filtration of the cell sonicate revealed bacteriolytic activity in the fractions containing radioactive and immunoreactive proteins. These findings suggest that lysozyme is newly synthesized by human epidermal cells.
J Invest Dermatol 1986 Nov
PMID:De novo synthesis of lysozyme by human epidermal cells. 377 52


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