To investigate the role of heat shock protein (HSP) on the chorionic villi of human placental cells and to compare the concentration of placental HSP70 & 90 in term deliveries and in missed ...miscarriages.
Fifty products of conception from women who experienced first trimester missed miscarriage and 50 placentas from women who gave birth at term were studied. An immunohistochemical investigation was carried out with which we marked the localization of heat shock proteins 70 and 90 on the syncytiotrophoblastic, cytotrophoblastic, stromal and blood vessel cells, using specific antibodies which can detect the presence of those proteins on light microscopy. We compared their expression with the normal placental tissue of term pregnancies and with material acquired from first trimester missed miscarriages. An indirect immunoperoxidase method was applied using polyclonal antibodies against HSP70 and HSP90 on formalin-fixed paraffin-embedded tissues.
Expression of HSP90B was increased in chorionic villi of first trimester missed miscarriages concerning syncytiotrophoblasts, cytotrophoblasts, vessel and stroma cells compared to full-term placentas. There was a statistically significant increase of HSP90A expression in chorionic villi of first trimester missed miscarriages, concerning only the cytotrophoblast cells, compared to full-term placentas. Expression of HSP70 cognate protein was significantly increased in chorionic villi of first trimester missed miscarriages, concerning syncytiotrophoblastic cells only, compared to full-term placentas. Finally, HSP70 inducible protein was significantly increased in chorionic villi of first trimester missed miscarriages concerning syncytiotrophoblasts, cytotrophoblasts, vessel and stroma cells compared to full-term placentas.
The results of the present study have sufficiently shown that there is an increase of HSP70 & 90 expression in chorionic villi of first trimester missed miscarriages compared to full-term placentas and this increase may have an important implication on the miscarriage process.
To investigate the possible benefits of erythroproietin ingestion in patients with various gynecological cancers with proven severe iron deficiency anemia.
Seven patients with gynecological cancer ...were included in the study. Nadir hematocrit values were found to be 20-24% before the initiation of recombinant human erythropoietin treatment. Initial therapy started at 50 units/kg/dose, three times weekly for a month. The dose was modified according to the rise of hemoglobin after a month's period. The dose was modified according to the rise of hemoglobin after a month's period. If the rise was greater than 2 g/dl the dose was changed to 25 units/kg two times weekly and if it was less than 2 g/dl it was changed to 25 units/kg three times weekly per month. Five patients were simultaneously given erythropoietin therapy and iron supplementation.
We confirmed a rise in the hematocrit values which averaged 0.5-1.5% weekly till the upper limit. Reticulocyte and hematocrit values were higher in the erythropoietin plus iron group (five cases).
In this small series, erythropoietin appeared to be effective in treating severe iron deficiency in gynecologic cancer patients. Further investigation is needed to confirm these results.
