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Biomedical subjects

Y N Gupta

Publications and source records attributed to Y N Gupta.

At least 19 recordsLinked to original sources
PubMed1996

Combination chemotherapy for breast carcinoma using a combination of cyclophosphamide, methotrexate and 5-fluorouracil (CMF) causes a platelet aggregation defect.

Various coagulation parameters including platelet aggregation were evaluated during the course of treatment in 25 patients with breast carcinoma receiving a combination of cyclophosphamide, methotrexate and 5-fluorouracil (CMF). No significant changes were found in whole blood clotting time (WBCT), prothrombin time (PT), kaolin cephalin clotting time (KCCT), platelet count (PC) and prothrombin consumption index (PCI). The CMF combination induced a significant reduction in platelet factor-3 (PF3) availability and reduction in platelet aggregation to ADP and adrenaline. These defects occurred without development of thrombocytopenia. The changes occurred on the 8th day of chemotherapy and a progressive suppression in platelet aggregation was noted during subsequent follow-up. This acquired abnormality in platelet aggregation and PF3 availability may be responsible for various hemorrhagic manifestations such as mucositis, epistaxis and hemorrhagic cystitis following CMF therapy. Further, these changes precede the onset of life-threatening complication of thrombocytopenia. The study of platelet aggregation should be considered besides platelet counting in patients on CMF combination to assess bleeding diathesis.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed1988

Serum lactic dehydrogenase isoenzymes alteration in carcinoma cervix uteri.

Serum LDH-isoenzyme studies revealed that in carcinoma cervix, the principal activity was confined to LDH-2 and LDH-3 with a significant rise in LDH-2 fraction when compared with the control values (P less than 0.001). Radiotherapy caused significant lowering of LDH-2 and LDH-3 (P less than 0.001 in each case). There was no relation of LDH-isoenzyme distribution in different clinical stages and morphological distribution within the tumor. Further, LDH-2 and LDH-3 were found to be lowered significantly in good and moderate clinical radiation response (CRR) groups (P less than 0.001 in each case) but in poor CRR group no significant change in LDH-2 and LDH-3 was observed following radiotherapy. LDH-isoenzyme determination in carcinoma cervix is very helpful in assessing the treatment response following radiotherapy and thus may be an important prognostic parameter.

Female↗
PubMed1987

Sequential radiation changes in cytology of vaginal smears in carcinoma of cervix uteri during radiotherapy.

The study deals with acute/immediate radiation changes in 2020 sequential vaginal smears in 101 patients of carcinoma of the cervix uteri, 97 were of squamous cell carcinoma and 4 of adenocarcinoma. The smears were collected after 12-14 days, 15-24 days and 25 days to 6 weeks following radiotherapy. The pretreatment vaginal smears were collected and examined for percentage of cancer cells. Subsequent smears were studied for radiation changes in benign and malignant cells, such as cell size, vacuolation of cytoplasm, multinucleation and nuclear changes, etc. A gradual and linear decline in cancer cells was observed until the end of therapy; 41.6% of patients had less than 10% cancer cells within 12-14 days of therapy, 63.4% of patients between 15 and 24 days and 74.6% after 25 days to 6 weeks following radiation. Eighty three percent of the patients attained zero level at the end of therapy.

Adenocarcinoma↗
PubMed1984

Qualitative platelet dysfunction following cancer chemotherapy: a case report.

A case of qualitative platelet dysfunction following cancer chemotherapy is documented. Besides the numerical reduction defect, there appear to be functional changes in the platelets leading to bleeding diathesis. The present case was thoroughly evaluated, and it was observed that there is suppression of the platelet functions in a patient receiving cancer chemotherapy, a combination of cyclophosphamide, methotrexate, and 5-fluorouracil.

Adult↗
PubMed1982

Radiation changes in vaginal and cervical cytology in carcinoma of the cervix uteri.

Radiation changes are observed in all postirradiated smears of squamous cell carcinoma of the cervix from 56 females, although to a variable degree. After 1 year the changes subside gradually. A high cornification index is a good guide for recurrence. The significance of dysplastic cells as premonition for recurrence is debatable. The presence of malignant cells at any stage was considered of grave significance, and indicates poor radiation response or recurrence.

Carcinoma, Squamous Cell↗
PubMed1982

Desquamation of malignant cells in carcinoma of the uterine cervix: its role in prognosis.

Percentage of malignant cell exfoliation in relation to that of benign epithelial cells was studied in pretreatment vaginal smears of 251 patients of squamous cell carcinoma of the cervix. The rate of exfoliation did not increase with increasing clinical severity. Also, the various cell types of squamous cell carcinoma and clinical radiation response were independent of number of malignant cells shed in the vagina. However, the group of patients having a fewer number of malignant cells in their vaginal smears had a statistically significantly better five-year survival.

Female↗
PubMed1981

Tissue isoantigens A, B, and H in carcinoma of the cervix uteri: their clinical significance.

A specific red cell adhesion test was done in 243 patients with carcinoma of the cervix uteri and showed the presence of isoantigens in only 27.16% of the patients with infiltrating squamous cell carcinoma. There was a gradual loss of isoantigens during the development of carcinoma. The test can be usefully employed in studying the evolution of the disease. The negativity of the test was found to increase as clinical severity of the disease increases. Also, the highest percentage (57.57%) of retained isoantigen was found in large-cell nonkeratinizing carcinoma, a well-differentiated type for the cervix. Follow-up studies suggest that the loss of antigen indicates probably metastasis and a poor prognosis.

ABO Blood-Group System↗
PubMed1981

Histiocytes in vaginal smears: as prognostic parameter in carcinoma of the uterine cervix.

Pretreatment vaginal smears of 251 patients with carcinoma of the cervix were counted for the percentage of histiocyte count in relation to benign squamous epithelial cells. No correlation was found between the percentage of histiocyte count and the age of the patient, clinical stage, cell type of squamous cell carcinoma, and clinical radiation response. Also a high histiocyte count is found to be unrelated to 5-year survival, recurrence, metastasis, or death of these patients. The present study indicates that the histiocyte number appears to have no relationship with immediate or remote prognosis in patients with carcinoma of cervix uteri.

Carcinoma, Squamous Cell↗
PubMed1981

Blood group specific substances in saliva of patients with cervical carcinoma.

Secretion of blood group specific substances in saliva of 380 patients with carcinoma of the cervix was studied, along with age-matched controls. The study shows that carcinoma of the uterine cervix is much more common in non-secretors (55.0%) than in secretors (45.0%). Statistically, this difference was found to be highly significant (P less than 0.001).+

Blood Group Antigens↗