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Biomedical subjects

L C Fuith

Publications and source records attributed to L C Fuith.

At least 19 recordsLinked to original sources
PubMed1991

CA 125 in breast milk.

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Antigens, Tumor-Associated, Carbohydrate↗
PubMed1991

Neopterin as a marker for activated cell-mediated immunity: application in malignant disease.

A review is presented on studies concerning neopterin determination in patients with malignant neoplastic diseases. Neopterin is produced chiefly by human macrophages through their activation by T-cell-derived interferon gamma. In vivo, determinationof neopterin in various body fluids provides a convenient way to monitor early events that are involved in cell-mediated immune responses. In malignant neoplasia, elevation of neopterin concentrations in body fluids depends on tumor type. Within a given type of tumor, more advanced stages are generally associated with higher levels than early disease. In a variety of different tumor types and sites, a significantly poorer prognosis was associated with high pretherapeutic neopterin concentrations. This predictive value is independent of several possible confounders such as stage or therapy. During follow-up malignant disease, neopterin elevations may predict deterioration of the clinical status of the patients and thereby provide a valuable additional marker for monitoring such patients. Possible immunobiological implications of the results are discussed.

Biomarkers, Tumor↗
PubMed1990

Urinary neopterin excretion in patients with uterine sarcomas.

Neopterin, a pyrazinopyrimidine compound, is a marker of activation of cell-mediated immunity. Urinary neopterin concentrations were measured in a total of 44 patients with uterine sarcomas. Pretherapeutic neopterin excretions were elevated in 78% (14/18). The mean neopterin concentration of patients with sarcomas was significantly higher (P less than 0.0001) than that obtained in women with benign myomas and healthy controls. Furthermore, a significant correlation of normal or raised neopterin concentrations with the clinical course of disease was found. These data suggest that urinary neopterin measurement might be a useful immunologic marker for women with uterine sarcomas.

Adolescent↗
PubMed1990

CA 125 levels analyzed.

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Antigens, Tumor-Associated, Carbohydrate↗
PubMed1990

[Modulation of hCG synthesis by alpha tumor necrosis factor in JAR choriocarcinoma cells].

The tumour necrosis factor (TNF) stimulates in cultured JAR choriocarcinoma cells the biosynthesis of hCG, including the free alpha and beta chain and the holo-hCG. Although elevated serum TNF levels have been shown by Balkwill et al. (1987) in about 50% of tumour patients, we were unable to confirm these data in the 10 examined patients, who had a choriocarcinoma. Despite its excellent in-vitro action, INF could not be confirmed to exercise an influence on the regulation of hCG in choriocarcinoma patients.

Cell Line↗
PubMed1990

[Prognostically relevant factors in malignant mixed Müllerian tumor].

In a retrospective analysis of 429 endometrial carcinoma and 29 malignant mixed Müllerian tumour (MMMT) patients, the prognostic factors were evaluated. More than 80% of endometrial carcinomata were staged as I or II, whereas about 30% of MMMT's already in stage III or IV (p less than 0.05). MMMT patients were 10 years older than the carcinoma group (73a vs 63a; p less than 0.001). The risk factors parity, adipositas, and diabetes were equally distributed in the two groups, the survival was worse in MMMT (p less than 0.0001). Applying univariate analysis stage, grading, myometrial invasion and type of therapy significantly affected the survival of endometrial carcinoma patients. After a Cox regression, only stage and grading remained significantly associated with the prognosis. For MMMT's, the survival was also influenced by stage, myometrial invasion, and kind of therapy. Moreover, the parity was found to affect markedly the course of disease. Cox regression of our data excluded all but stage and parity. The beneficial influence of parity on the prognosis of MMMTs, despite a latency of more than 20 years from the last birth to tumour appearance, is unique in oncology.

Adenocarcinoma↗
PubMed1989

Modulation of ovarian carcinoma tumor marker CA-125 by gamma-interferon.

Interferons are known to modulate several cellular functions by the induction of different proteins. In our study a gamma-interferon-mediated presentation of one of the most important ovarian tumor markers (CA-125) on the cell surface was demonstrated using two ovarian carcinoma cell lines in vitro (HTB-77 and SKOV-3). This induction was found to be dependent on an intact protein biosynthesis. The gamma-interferon effect reached a maximum on the third day of treatment. Under such conditions the CA-125 concentration was increased intracellularly, on the cell surface, and in the supernatant culture medium. The surface antigen was shed rapidly with a half-life of 1 day. The addition of dexamethasone to gamma-interferon treated HTB-77 cells improved CA-125 expression synergistically. HLA-DR and CA-125 expression was found to be regulated by interferons in different ways. The demonstration of CA-125 expression provides an important insight into the potential regulatory mechanism governing this tumor marker. Since interferons are naturally occurring substances as well as therapeutically administered agents, it seems necessary to pay attention to possible tumor marker modulation.

Antigens, Tumor-Associated, Carbohydrate↗