Cardiovascular effects of yellow oleander ingestion.

Yellow oleander (Thevetia neriifolia) is a commonly grown tree found widely in Eastern India. The seeds of yellow oleander are highly poisonous and contain three glycosides--thevetin, thevetoxin and peruvoside. Yellow oleander seed ingestion is usually with suicidal intent in Eastern India. Manifestations range from mild to potentially fatal. It has significant cardiovascular effects with varying rhythm abnormalities. Effects of yellow oleander seed ingestion (YOI) were studied in 300 patients from 1986 to 1990 at BS Medical College, Bankura. Majority i.e., 246 (82%) were females and 226 (75.33%) were young in the age group 11-20 years. Most reported for treatment 6 to 8 hours after ingestion of seeds. The number of seeds swallowed varied from half to fifteen. Two hundred and ninety-two (97.33%) ingested seeds in the crushed form; 156 (52%) were asymptomatic, 92 (30.66%) had vomiting and 36 (12%) had palpitation. In electrocardiogram (ECG), 138 (46%) revealed varying types of arrhythmias including sinus bradycardia in 68 cases (49.27%). Ischaemic changes were present in 118 cases (39.33%). Number of seeds ingested did not bear any relationship with ECG changes in YOI. All 14 cases of death were autopsied. Subendocardial and perivascular haemorrhage with focal myocardial oedema was present in all. Median hospital stay was 5 days (range 2 to 24). During discharge, 256 (85.33%) had normal ECG, 14 (4.66%) had sinus bradycardia and 16 (5.33%) demonstrated ischaemic changes.

Role of sublingual administration of tablet buprenorphine hydrochloride on relief of labour pain.

Tablet buprenorphine hydrochloride when administered to 34 primigravida women sublingually in a dose of 6 micrograms/kg body weight during the first stage of labour, the analgesic action started 30 minutes after administration of drug and the analgesic action increased gradually and reached its peak level 3 hours after administration of drug. Analgesic action continued throughout the first stage of labour when the duration after administration of drug was 9 hours. In one case maximum analgesic action did not persist after 9 hours. The average time of delivery was 5.88 hours having cervical dilatation of 3.1 (+/- 0.13) cm and the progress of labour was not delayed by the drug. There was no cardiorespiratory depression of the subjects. None complained of nausea or vomiting. There was no change in foetal heart rate and Apgar scoring of neonates revealed the average value of 9.71 at 1 minute and 9.94 at 5 minutes.

The induction of grain size and colour mutations in rice (Oryza sativa L.) by radioisotopes.

Seven mutants with changes in grain size and in pigmentation of various organs were isolated in the M 2 and M 3 generations of the Patnai variety of winter rice after treatment with (32) P and (35) S. Some of these could be useful for breeding.The narrow grain mutant, isolated in the M 3 generation after treatment with (32) P, was high-yielding and had fine grains and an increased number of long panicles.Two short grain mutants with changed husk colour were obtained in the M 2 generation after treatment with (32) P. One was also early maturing.One purple apiculus and three purple husk mutants were isolated in the M 2 generation after treatment with (35) S. Some of these also had reduced plant height and short grains. The purple apiculus mutant bred true for stigma and apiculus colour, but segregated for leaf sheath colour. In purple husk mutants the segregation of mutant characteristics was unusual and there was manifestation of new characters.