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Results for “Foreign-Body Reaction”

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At least 199 records · Page 11Linked to original sources
PubMed1978

[Stomitis caused by non-absorbable sutures: a complication to be avoided].

Stomitis due to non absorbable sutures is an increasingly common endoscopic finding. Personal experience has shown that this complication is not encountered when catgut sutures are employed in stomach operations. It is therefore recommmended that this or other absorbable material be used in gastric surgery. Stress is placed on the need to make use of absorbable threads for both inside and external sutures, since inflammation may be observed in the anastomosis even in cases where catgut is used fro mucosa-mucosa stitches and nonabsorbable material for serosaserosa sutures.

Catgut↗
PubMed1978

[Electron-microscopic and autoradiographic study of giant cells of foreign bodies in the focus of aseptic inflammation].

Ultrastructure of sinuous proximal and straight distal tubules, as well as collecting tubules of the cortical layer in the rat kidney fixed with perfusion has been studied with electron microscopic morphometry 7--8 weeks after contralateral nephrectomy. The volume of mitochondria, the area of their crists, the area of the membranes in intracellular labyrinth and other morphometrical parameters have been calculated. Relative volume of mitochondria in the nephron areas studied does not change, while in the collecting tubules it is elevated. The area of crists in mitochondria and "coefficient of morphological organization level" of these organells in the proximal tubules are increased, in the distal do not change, in the collecting tubules increase again. Subcellular changes described are discussed mainly in terms of enhancement of concentrating function of the compensatory-hypertrophic kidney.

Animals↗
PubMed1978

[On the usefulness of bone scintigraphy for detecting loosening of articular prostheses (author's transl)].

The most important complication of articular substitution is the loosening of the prostheses as a result of permanent overstraining, trauma, chemical or infectious noxae. The value of bone scintigraphy in the diagnosis of loosening of the endoprothesis was examined in 53 articular prostheses (49 hip joints and 4 knee joints). A pathological scan was evident in all cases where the prosthesis had become loose (18 cases), whereas a normal scan was found in 34 firmly positioned prostheses. A false positive scan occurred in one case of periarthritis. Bone scintigraphy can be employed as a means of diagnosing loosening of prostheses after a period of nine months following the operation; up to that time, enhancement can be due to the operation. A positive scan in case of loosening of the prosthesis is manifested earlier than radiological signs. For this reason, scintigraphy can be recommended as a routine examination method in pain after articular substitution surgery.

Bacterial Infections↗
PubMed1978

[Anaesthetic problems during resection of the carina (author's transl)].

Benigne tracheo-bronchial constriction is an infrequent indications for resection of the bifurcation of the trachea. In former times resection and reconstruction of the bifurcation have been performed using extracorporal oxygenation. Nowadays, the method of separate ventilation of both lungs is used more frequently. Pathophysiological variations should be taken into consideration, which may occur during interruption of the ventilation of one side of lung caused by operating procedures. Rapidly developing atelectasis of the non-ventilated but perfused lung endangers the patient, as a result of an increased intrapulmonary right-to-left-shunt. Hypoxaemia can be prevented by temporary occlusion of the pulmonary artery of the nonventilated lung. This procedure is to be recommended in view of the fact that there is no prompt constriction of the vessels. Investigations with dogs show that a slightly developing accommodation of the perfusion can be disturbed by variations of cardiac output or mean pressure of ventilation.

Child↗
PubMed1978

Are Langhans giant cells precursors of foreign-body giant cells?

Granulomas were induced in rats by subcutaneous implantation of pieces of Melinex plastic into the dorsum. The pieces of Melinex were removed at intervals varying from 16h to 14 days, and the adherent cells were studied morphologically and quantitatively. Giant cell formation started about 32h after implantation. The first giant cells to appear were of the Langerhans type. Two days after implantation, most of the giant cells are still Langhans-type cells. A few giant cells of the foreign-body type and transition forms between the Langhans and foreign-body types are also present. From the third day on, the foreign-body type gradually becomes predominant. Independent of the duration of implantation, giant cells with 3, 4, or 5 nuclei are virtually without exception of the Langhans type. The higher the number of nuclei between 6 and 30, the more cells are of the foreign-body type. Giant cells with 30 or more nuclei are all foreign-body type. The findings are discussed in the light of current knowledge concerning giant cell formation. It is concluded that under the present experimental conditions, Langhans-type giant cells are the precursors of foreign-body-type giant cells.

Animals↗
PubMed1979

Fiber implantation for pattern baldness.

Examination of 20 patients who had fiber implantation for the treatment of pattern baldness showed that nearly all the fibers had fallen out by ten weeks. Complications observed were facial swelling, infection, foreign-body granulomas, scarring, and permanent hair loss. Scanning electron microscopy identified the fibers as modacrylic fibers. The complications, high monetary cost, and ultimate futility of fiber implantation make it an unacceptable procedure.

Acrylic Resins↗
PubMed1978

Intraocular effects of lint particles from disposable drapes.

Fragments of lint from a disposable paper head drape were implanted into the anterior chamber of 9 rabbit eyes. Eyes were removed at varying intervals after implantations and sectioned for microscopic examination. A localized inflammatory response appeared as early as day 1 and increased in severity during the first 10 days. The reaction began to abate, however, by the 14th day. Control eyes with sham operations failed to show any such reaction. Daily monitoring for cell and flare reaction was negative in all eyes.

Animals↗
PubMed1979

Schistosomiasis--cancer: etiological considerations. A review.

Evidence for a causal connection between Schistosoma haematobium-infection and carcinoma of the urinary bladder is discussed. A group relationship of schistosomiasis cancer to cancers as+sociated with asbestosis, foreign body implants, and cicatrization is suggested on the basis of several criteria. Results of experimental foreign body tmuorigenesis in mice are presented and elaborated in relationship to schistosomiasis cancer. Carcinogenic development at the cellular level is discussed with emphasis on the essential role of tissue-environmental conditions, especially fibrotic changes and macrophage quiescence.

Adult↗
PubMed1978

Polyvinylchloride (PVC) particles implantation in mouse liver. A technique for experimental study of schistosome eggs-induced liver pathology.

An injection of suspended PVC particles in the caecal vein of mice induces a foreign-body portal granuloma reaction in the liver. Plastic casts of the portal system, after PVC particles implantation, show modifications in the portal bed and are compared with plastic casts obtained in mice infested by Schistosoma mansoni. This technique can be useful to study the cellular dynamics of the portal granuloma and can be a model for schistosomal eggs induced liver pathology.

Animals↗