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EN
Tumour markers are substances produced by malignant cells or by the organism as a response to cancer development. Determination of their levels can, therefore, be used to monitor the risk, presence and prognosis of a cancer disease or to monitor the therapeutic response or early detection of residual disease. Time-consuming imaging methods, examination of cerebrospinal fluid or tumour tissue and assays for hormones and tumour markers have been used for cancer diagnosis. However, no specific marker for diagnosis of childhood solid tumours has been discovered yet. In this study, metallothionein (MT) was evaluated as a prospective marker for such diseases. Serum metallothionein levels of patients with childhood solid tumours were determined using differential pulse voltammetry - Brdicka reaction. A more than 5-fold increase in the amount of metallothionein was found in sera of patients suffering from cancer disease, compared with those in sera of healthy donors. The average metallothionein level in the sera of healthy volunteers was 0.5 ± 0.2 μmol · dm-3 and was significantly different (p<0.05, determined using the Schefe test) from the average MT level found in serum samples of patients suffering from childhood solid tumours (3.4 ± 0.8 μmol · dm-3). Results found in this work indicate that the MT level in blood serum can be considered as a promising marker for diagnostics, prognosis and estimation of therapy efficiency of childhood tumours.
EN
Introduction: The presence of metallothionein in both the endometrium and decidua is associated with the resis- tance of both endometrial and decidual cells to immune-mediated apoptosis. Consequently, the aim of the pres- ent study has been to typify metallothionein immunoreactivity within the molar lesions of both the patients who were treated with surgery alone and those who were also given chemotherapy. Methods: We analyzed the immu- noreactivity of metallothionein in both the trophoblast and decidual cells derived from patients on whom curet- tage was performed due to a diagnosis of complete molar pregnancy. These patients were then divided into two subgroups according to whether or not they required chemotherapy following the surgical procedure. Results: We observed a statistically significantly lower metallothionein immunoreactivity levels within the trophoblast cells derived from the complete hydatidiform mole patients who had had surgery alone in comparison to the levels found in those patients for whom surgery was followed by chemotherapy. Conclusion: Resistance to apoptosis linked with metallothionein intracellular immunoreactivity may influence the clinical course of hydatidiform mole.
PL
Wprowadzenie: Obecność metalotioneiny w endometrium i doczesnej, czynnika antyapoptotycznego, jest zwią- zana z opornością na apoptozę zarówno komórek endometrium, jak i komórek doczesnej zależną od aktywności komórek układu odpornościowego. Celem niniejszego badania była ocena immunoreaktywności metalotioneiny w ogniskach zaśniadu u pacjentek leczonych wyłącznie operacyjnie i u chorych, u których dodatkowo zastosowa- no chemioterapię. Metoda: Analizowano immunoreaktywność metalotioneiny zarówno w komórkach trofoblastu, jak i w komórkach błony doczesnej uzyskanych w wyniku łyżeczkowania jamy macicy przeprowadzonego z powo- du rozpoznania ciąży zaśniadowej całkowitej. Pacjentki podzielono na dwie podgrupy: chorych, które wymaga- ły dodatkowej chemioterapii po zabiegu operacyjnym, oraz chorych, u których takiego leczenia nie zastosowano. Wyniki: Stwierdzono statystycznie znamienny niższy poziom immunoreaktywności metalotioneiny w obrębie ko- mórek trofoblastu pochodzących od pacjentek z zaśniadem groniastym całkowitym leczonych wyłącznie operacyj- nie w porównaniu z pacjentkami, u których leczenie operacyjne uzupełniono chemioterapią. Wniosek: Oporność na apoptozę może zależeć od wewnątrzkomórkowej obecności metalotioneiny, co prawdopodobnie ma wpływ na przebieg kliniczny zaśniadu groniastego.
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