Biomaterial Database

Ultrastructure of naturally occurring subcutaneous nodule in acute rheumatic fever. 1991

P Chopra, and J P Narula, and R Tandon

Department of Pathology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi.

Electron microscopic evaluation of subcutaneous nodules excised from two cases of acute rheumatic fever showed an electron dense and smudgy material which had a distinct filamentous appearance in places. The latter was recognized as collagen. This corresponded to the fibrinoid necrosis seen under the light microscope. In addition, several histiomonocytic cells and fibroblasts were seen. A large number of cells were degenerated. A fair degree of resemblance of the nodule both by light and electron microscopy to the rheumatoid nodule was noted.

UI	MeSH Term	Description	Entries
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D003094	Collagen	A polypeptide substance comprising about one third of the total protein in mammalian organisms. It is the main constituent of SKIN; CONNECTIVE TISSUE; and the organic substance of bones (BONE AND BONES) and teeth (TOOTH).	Avicon,Avitene,Collagen Felt,Collagen Fleece,Collagenfleece,Collastat,Dermodress,Microfibril Collagen Hemostat,Pangen,Zyderm,alpha-Collagen,Collagen Hemostat, Microfibril,alpha Collagen
D003238	Connective Tissue	Tissue that supports and binds other tissues. It consists of CONNECTIVE TISSUE CELLS embedded in a large amount of EXTRACELLULAR MATRIX.	Connective Tissues,Tissue, Connective,Tissues, Connective
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012213	Rheumatic Fever	A febrile disease occurring as a delayed sequela of infections with STREPTOCOCCUS PYOGENES. It is characterized by multiple focal inflammatory lesions of the connective tissue structures, such as the heart, blood vessels, and joints (POLYARTHRITIS) and brain, and by the presence of ASCHOFF BODIES in the myocardium and skin.	Acute Rheumatic Fever,Arthritis, Rheumatic, Acute,Rheumatism, Articular, Acute,Arthritis, Acute Rheumatic,Inflammatory Rheumatism,Polyarthritis Rheumatica,Rheumatic Arthritis,Rheumatism, Acute Articular,Acute Articular Rheumatism,Acute Articular Rheumatisms,Acute Rheumatic Arthritides,Acute Rheumatic Arthritis,Acute Rheumatic Fevers,Arthritis, Rheumatic,Articular Rheumatism, Acute,Fever, Acute Rheumatic,Fever, Rheumatic,Fevers, Acute Rheumatic,Inflammatory Rheumatisms,Polyarthritis Rheumaticas,Rheumatic Arthritides,Rheumatic Arthritis, Acute,Rheumatic Fever, Acute,Rheumatic Fevers,Rheumatism, Inflammatory
D012215	Rheumatic Nodule	A small round or oval, mostly subcutaneous nodule made up chiefly of a mass of Aschoff bodies and seen in cases of rheumatic fever. It is differentiated from the RHEUMATOID NODULE which appears in rheumatoid arthritis, most frequently over bony prominences. (From Dorland, 27th ed)	Aschoff Bodies,Bodies, Aschoff,Nodule, Rheumatic,Nodules, Rheumatic,Rheumatic Nodules
D012867	Skin	The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.