Antineoplastic effect of new boron compounds against leukemic cell lines and cells from leukemic patients.

Three new boron compounds, dihydroxy (oxybiguanido) boron (iii) hydrochloride monohydrate (HB), guanidine biboric acid adduct (GB) and hydroxosalicyl hydroxomato boron (iii) (SHB) were studied to observe their antineoplastic effect, if any. Leukemic cells isolated from acute lymphatic leukaemia (ALL) patients and chronic myeloid leukaemia patients (CML) and myeloid leukemia cell lines (HL 60 and U-937) showed cell growth inhibition after treatment with the boron compounds. MTT assay showed that the growth of metabolically active cells was inhibited by treatment with these drugs. The molecular mechanism by which SHB induced apoptosis in immature blast cells was also investigated by ladder formation in gel electrophoresis.

The role of neoadjuvant and adjuvant chemotherapy regimens consisting of different combinations of drugs in the treatment of advanced oral cancer.

We performed a retrospective analysis on the effect of neoadjuvant chemotherapy with three cycles of methotrexate (100 mg/m2 on day 1), cisplatin (90 mg/m2 on day 1) and bleomycin (20mg/m2 on day 1-5) with 21 d gap between each cycle in 44 patients with advanced squamous cell carcinoma of the cheek, lip and tongue followed by surgery and adjuvant chemotherapy consisting of cisplatin (90 mg/m2 on day 1), Mitomycin C (6 mg/m2 on day 1) and 5-fluorouracil (1000 mg/m2 120 h continuous infusion from day 1) repeated every 3 weeks for three cycles. Following induction chemotherapy, complete response was observed in 11 out of 44 patients (25%), and a partial response in a further 28 patients (64%). The overall median survival of all patients was 29 months and those in stage III and stage IV were 30 and 15 months respectively (P< 0.001). The median duration of the time to relapse in patients who responded to adjuvant chemotherapy was 28 months. The main toxic effect was vomiting followed by hematological toxicity. No treatment-related deaths occurred. The regimen showed a significant response, encouraging median survival and a good tolerability profile.

Primary adenocarcinoma of the stomach associated with peripheral neurofibromatosis: report of a case.

A 55-year old man with von Recklinghausen's disease was admitted to our hospital for investigation of weight loss, anorexia, and abdominal discomfort. Endoscopy findings revealed impairment in the extendability of the stomach by air, and barium meal studies showed a well-contracted stomach. On exploratory laparotomy, the whole of the stomach was found to be grossly shrunken with thickening of the walls suggesting a "linitis plastica" stomach. Histological findings confirmed stage III poorly differentiated diffuse infiltrative adenocarcinoma of the stomach. This report describes a rare case of "linitis plastica" stomach in a patient with peripheral neurofibromatosis (NF-1) indicating that the NF-1 disorder does not spare an individual from other common neoplastic disorders.

A clinico-pathological study of cervical carcinoma through histopathology, SEM and tumour marker expression.

Carcinoma of the uterine cervix is the commonest tumour in India. Our study on the biological behaviour of cervical carcinoma was made with respect to oncofetoprotein expression, histopathology and scanning electron microscopy. A clinical picture was compared with the above three parameters to note the embryonic degeneration of the tumour. The objective of this study was to establish a new grading system of tumour pathology which might be an adjunct to clinical staging. This should be helpful for the formulation of different treatment protocols.

Cervical cytology screening in Calcutta and adjoining areas with special reference to carcinoma of the uterine cervix.

A total of 1232 female subjects including 100 prostitutes from Calcutta and adjoining areas in the age group of 21-70 years were screened for cervical pathology according to the method of Papanicolaou. Of 1232 examined, 815 were found to have smears with normal cellular cytology (66.15%). The others were grouped into dysplasia (18.4%) and inflammatory (15.4%) according to the cytomorphological characteristics of the exfoliated cells. The findings though revealed more cases of cervical dysplasia in women with early marriage, early childbirth, high parity and multiple sexual partners, it failed to support the smegma theory of cervical carcinoma. This study also showed a number of inflammatory cervical smears in women coming from low socio-economic group.

Surveillance of rabies in Dacca.

A total of 977 human and animal (including livestock) cases of rabies exposure attributed to the bite of a variety of animals during a period of one year in an area covering 22 thanas has been analysed. Dog-bite, mostly from stray dogs constituted the highest risk of exposure to rabies in humans and animals including livestock. Prophylactic vaccination of pet animals including livestock and elmination of stray dogs will considerably reduce the exposure to rabies.