Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-1963
    Keywords: Schlüsselwörter: Hypervariable Regionen (HVR) – Molekulargenetische Marker – Polymerase-Ketten-Reaktion (PCR) – Einzelstrangkonformationspolymorphismen(SSCP)-Analyse ; Key words: Variable number tandem repeats – Molecular genetic markers – Polymerase chain reaction – Single strand conformation polymorphism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract. Variable number tandem repeats (VNTR) are highly polymorphic DNA sequences which can be used as genetic markers in different fields of medicine. In this report, we describe the methodology of VNTR in diagnostic molecular pathology, using a rapid, DNA-based approach involving polymerase chain reaction (PCR) amplification and electrophoresis of highly polymorphic DNA satellite sequences. As concrete examples of the application of this approach, we present two case reports: 1. A B-cell lymphoma of the porta hepatis developed in a 54-year-old man 4.5 months after orthotopic liver transplantation for liver failure due to chronic hepatitis C infection. Using DNA polymorphisms as genetic markers, we showed that the tumor was of donor origin. This finding may be important for the patient's subsequent management. 2. An immature teratoma of the left ovary was found during delivery by cesarean section in a 27-year-old woman. The female newborn survived for 9 weeks and then died from central dysregulation because of an intracranial immature teratoma. Because the synchronous tumors were of similar histology, clonal origin in maternal tissues and metastatic spread were initially suspected. Analysis of highly polymorphic DNA markers clearly indicated that the teratoma carried by the child was of independent genetic origin from the mother's tumor.
    Notes: Zusammenfassung. Hypervariable Regionen (HVR) als hochpolymorphe DNA-Sequenzen können als Marker in der molekular-genetischen Diagnostik in verschiedenen Gebieten der Medizin benutzt werden. Wir beschreiben die methodischen Grundlagen dieser Technik, die auf der Polymerasekettenreaktion (PCR) und der anschließenden elektrophoretischen Auftrennung der HVR-Amplifikationsprodukte basieren. An 2 Fällen wird gezeigt, wie diese molekulargenetische Methodik die konventionelle histopathologische Untersuchung ergänzen kann: 1. Im Fall eines 54jährigen Patienten trat 4,5 Monate nach einer Lebertransplantation, die wegen Leberversagens bei chronischer Hepatitis-C-Infektion durchgeführt worden war, ein hochmalignes Non-Hodgkin-Lymphom im Bereich der Leberpforte auf. Durch den Vergleich von Sequenzpolymorphismen im Spender- und Empfängergewebe sowie im Lymphom konnte das Lymphom dem Spendergewebe sicher genetisch zugeordnet werden. 2. In einem zweiten Fall fand sich bei einer schwangeren 27jährigen Patientin während der operativen Entbindung ein unreifes malignes Teratom des linken Ovars. Das reife Neugeborene verstarb 9 Wochen nach der Geburt an den Folgen eines intrakraniellen unreifen Teratoms. Aufgrund des simultanen Auftretens und der fast identischen Histologie beider Tumoren wurde der Ursprung des kindlichen Tumors zunächst als Metastase des mütterlichen Tumors vermutet. Der Nachweis unterschiedlicher Sequenzpolymorphismen im mütterlichen und kindlichen Tumor zeigte jedoch, daß beide verschiedener genetischer Herkunft waren.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 120 (1993), S. 91-94 
    ISSN: 1432-1335
    Keywords: Cardia carcinoma ; Infracardial gastric carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a part retrospective, part prospective study, 354 carcinomas of the cardia were compared with 1259 infracardial gastric carcinomas with regard to the age and sex of the patients, macroscopic classification, microscopic classifications, depth of invasion, and survival rates. Mortality rates are generally higher in cardia carcinoma than in stomach carcinoma. The difference is due to the significantly poorer survival of cardia carcinoma patients in stage I, while mortality rates in stages II, III, and IV of both types are approximately similar. Highly significant differences were also found with regard to sex ratio, incidence of macro- and microscopic subtypes, and invasive growth. The typical cardia carcinoma occurs preferentially in men, is mostly well-delineated, and is manifested as an ulcerated or polypoid, well-differentiated tumor of expansive growth, corresponding to Laurén's intestinal type. These results confirm the concepts of McPeak and Warren, MacDonald, and Siewert et al., that the carcinoma located in the cardia must be seen as a separate entity of gastric carcinoma.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-1335
    Keywords: Gastric cancer ; Inflammatory infiltrate ; Macrophages
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Using monoclonal antibody 25 F 9, which reacts with a determinant of mature macrophages, the inflammatory infiltrate of 66 gastric carcinomas was evaluated using a counting grid. The ratio tumor cells/macrophages was determined for every tumor. For a threshold value of 5, carcinomas with a better prognosis, such as the intestinal type according to Lauré, the expanding type according to Ming and the differentiated carcinomas according to the WHO had a significantly smaller relative content of 25 F 9-positive macrophages (a minimum of P〈0.05) than the diffuse type, infiltrative type, and undifferentiated carcinomas. Furthermore, the relative macrophage content tended to increase with the stage of carcinoma spread (P〈0.1). The results suggested that 25 F 9-positive macrophages in gastric carcinoma are of greater significance in tumor spread than in any defensive reaction against the tumor.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 120 (1993), S. 95-99 
    ISSN: 1432-1335
    Keywords: Adenocarcinoma ; Gastric carcinoma ; Esophagus ; Cardia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Since the carcinomas of the cardia and the adenocarcinomas of the esophagus show many similarities in their histological and morphological descriptions, a detailed comparative study was attempted on the basis of 66 esophageal carcinomas in adenoid differentiation, 359 carcinomas of the cardia, 1288 gastric carcinomas in infracardial localisation, and 492 squamous carcinomas of the esophagus. The evaluation yielded no significant differences between the adenocarcinomas of the esophagus and the cardia neither in age and sex distribution nor with regard to the classifications of Borrmann, WHO, Ming, and Laurén, but a significant discrimination was possible between esophageal and cardial adenocarcinoma together, on the one hand, and infracardial gastric carcinoma on the other. Furthermore, esophageal adenocarcinomas were localized preferentially in the lower third, unlike squamous carcinomas of the same organ. These results suggest that esophageal adenocarcinoma and carcinoma of the cardia must be considered as one separate entity, probably originating from a common stem cell. They further suggest that the cardia belongs to the esophagus rather than to the stomach.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 372 (1987), S. 868-868 
    ISSN: 1435-2451
    Keywords: Early gastric cancer ; Localization-adapted surgery ; Prognosis ; Five-year survival rate ; Magenfrühcarcinom ; Lokalisationsgerechte Chirurgie ; Prognose ; Fünfjahresheilung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Im Zeitraum von 1974 bis 1986 wurden an der Chirurgischen Universitätsklinik Münster 102 Patienten mit Magenfrühcarcinom operiert. Die Operationsstatistik basierte auf Tumortyp, Lokalisation, Flächenausdehnung des Carcinoms und einer evtl. Multizentrizität. Bei 48 Patienten überblicken wir das 5-Jahresintervall. Insgesamt 4 Patienten starben während der ersten 5 Jahre, davon 3 an einem Rezidivtumor. Wegen der guten 5-Jahres-Überlebensrate von 91,7% erscheint die Gastrektomie als Regeloperation nicht angezeigt.
    Notes: Summary Between 1974 and 1986, 102 patients with early gastric cancer were operated on in the Department of Surgery at the University Hospital of Miinster. In our statistics, the tumor type, tumor localization, and extension of the carcinoma, as well as possible multicentricity were taken into consideration. In 48 patients, 4 died within the first 5 years, 3 of them from tumor recurrence. Because of the good 5-year survival rate, gastrectomy as a standard operation is not indicated.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...