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  • 1
    ISSN: 1432-1262
    Keywords: Keywords Peutz-Jeghers syndrome ; Hamartomatous polyps ; Intussusception ; Cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Peutz-Jeghers syndrome is an autosomal dominant inherited disorder characterized by hamartomatous polyps in the small bowel and mucocutaneous pigmentation. Patients with Peutz-Jeghers syndrome often present as surgical emergencies with complications of the polyps, such as intussusception, bowel obstruction, and bleeding. Recently an increased risk of malignancies has also been reported. This study was initiated to determine the clinical features of Peutz-Jeghers syndrome in Korean patients, with special attention to the development of malignancies. Thirty patients with Peutz-Jeghers syndrome were investigated; their median age was 23.5 years, and symptoms appeared at a median age of 12.5 years. Family history was positive in one-half of cases, and mucocutaneous pigmentation was observed in almost all patients (93%). The jejunoileum was the most frequent site of the polyps, and there were generally 10–100 polyps. Multiple laparotomies were performed in a substantial portion of the patients, due mainly to polyp-induced bowel obstruction, and the surgical interventions were begun at a relatively young age (average 21.4 years). Four cases of small-bowel cancer and one case of breast cancer were detected in probands, at a relatively young age (mean 36 years). Cancers of the small bowel, stomach, colon, breast and cervix were diagnosed in the first relatives of the probands. Close follow-up from an early age should thus be performed in patients with Peutz-Jeghers syndrome as they are at high risk of surgical emergency and development of malignancy.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 250 (1993), S. 182-185 
    ISSN: 1434-4726
    Keywords: Middle ear epithelial cells ; Glycoprotein ; Mucin secretion ; Chinchilla
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A method for middle ear epithelial (CMEE) cell culture with active mucus secretory function has been successfully developed, using the chinchilla as an animal model. CMEE cells were dissociated by protease digestion from the middle ear mucosa. The CMEE cells grown in primary culture incorporated [3H] glucosamine into a glycoconjugate after its release into medium. This substance was characterized biochemically as mucin, although the production of mucin by the cells required growth on a substratum of collagen gel. These cultures provide an excellent model for studying factors that regulate synthesis and secretion of glycoproteins in CMEE cells.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 250 (1993), S. 220-223 
    ISSN: 1434-4726
    Keywords: Middle ear ; Epithelial transplants ; Arachidonic acid metabolism ; Chinchilla
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thin-layer chromatography was used to examine the metabolism of arachidonic acid and prostaglandins (PGs) in freshly isolated and cultured middle ear epithelial cells from the chinchilla. The freshly isolated cells converted arachidonic acid predominantly to PGE2, while those cells grown in culture for 10 days acquired the ability to convert arachidonic acid to 6-keto-PGF1α, PGD2, and PGE2. Incubation of the isolated cells and primary cultures with acetylsalicylic acid and indomethacin inhibited the formation of these PGs. These findings suggest that studies on the factors regulating arachidonic acid metabolism in middle ear epithelium may help to explain the role of eicosanoids in middle ear secretions, particularly in relation to the pathophysiology of otitis media.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1741-0444
    Keywords: Cancer ; Hyperthermia ; Programmable calculator
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The use of whole-body hyperthermia as an adjuvant mode of therapy for metastatic cancer requires an accurate control of core body temperature so that the high temperatures encountered during treatment may be safely employed. Heating of the patient is accomplished by use of high-perfusion water-heated blankets. The temperature of the water circulating through the blankets is regulated by digital feedback control, using patient oesophageal temperature as a reference. A forced air heat exchanger is used to cool the circulating water once the control temperature is reached. Patient core body temperatures are currently being maintained at 41·8°C±0·1°C for time periods of up to four hours.
    Type of Medium: Electronic Resource
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