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   1978| April-June  | Volume 10 | Issue 2  
 
 
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RESEARCH PAPER
Cholinergic effect of tetramisole upon Ascaridia galli
AK Chakraborty, RK Mehta, PN Shrivastava, IC Dutta
April-June 1978, 10(2):121-125
. Tetramisole elicited marked contraction of Ascaridia galli, potentiated the contractile action of acetylcholine and at a higher concentration produced persistent contraction of the worm leading to its paralysis. The contractile response to tetramisole was blocked by atropine but not by promethazine, which indicates that histamine receptors are not involved. Barium chloride had no effect upon the parasite. These suggest an acetylcholine type depolarizing effect of tetramisole cm Ascarodoa galli,
[ABSTRACT]   Full text not available  [PDF]
  1,622 87 -
RESEARCH PAPER
Studies on the sympathomimetic effects of debrisoquine on smooth muscle of rat
MP Patel, PK Trivedi, KG Hemavathi, DS Shah
April-June 1978, 10(2):127-133
. The adrenergic neurone blocking and sympathomimetic effects of debrisoquin (DBQ) were studied on anococcygeus and vas deferens preparation of rat to find out correlation between the two effects and the mechanism of action of the latter. DBQ (5.71 x IO-9 M) caused a reversible neurone blocking effect as well as potentiated responses to noradrenaline (NA) on anococcygeus muscle. Higher concentrations of DBQ(1.17 x10-6 M) caused similar effects on vas deferens. Reserpinization abolished contractile responses due to DBQ a s well as its potent- iating effect of NA responses in anococcygeus muscle, while it failed to modify the potentiation of NA responses by DBQ in vas deferens. Phentolamine (1 x 10-7 M) completely antagonised the contractions due to DBQ on anococcygeus muscle of rat. Nialamide (3.35 x 10-5 M) completely antagonised the potentiating effect of DBQ on NA responses in anococcygeus muscle, while antagonism of pontentiating effect of DBQ by nialamide in vas deferens was partial but significant. There is a significant correlation between the neuronal blocking and sympathomimetic effects of DBQ. The mechanism of the sympathomimetic effect of DBQ is probably different in the two preparations.
[ABSTRACT]   Full text not available  [PDF]
  1,331 78 -
REVIEW ARTICLE
Some recent advances in the biochemical Pharmacology of GABA
R Naik, UK Sheth
April-June 1978, 10(2):105-113
Full text not available  [PDF]
  1,139 140 -
SHORT COMMUNICATION
Antifilarial activity of mebendazole against Setaria cervi
KC Singhal, BR Madan, PN Saxena
April-June 1978, 10(2):163-166
. Mebendazole administered orally upto a dose of 500 mg/kg was ineffective either in eradicating microfilariae from the peripheral circulation of rats infected with Setaria cervi or in affecting the implanted adult worms. The lack of effect of mebendazole is likely due to its low absorption from the alimentary tract. Mebendazole was also ineffective in reducing the survival time of microfilariae in vitro. Mebendazole in low doses produced stimulation of the movements of adult worm and nerve-muscle complex which was not blocked by prior addition of d-tubocurarine. This suggests that acetyl-choline is not involved in bringing about the stimulant effect. At higher concentrations, the drug caused complete irreversible paralysis of the whole worm as well as the nerve-muscle complex of S. cervi. The dose required to produce an equivalent effect in the nerve-muscle complex was 1/10th of that required for the whole worm suggesting the existence of a cuticular barrier.
[ABSTRACT]   Full text not available  [PDF]
  1,140 100 -
Effect of cyproheptadine on ascorbic acid uptake by bone in vitro
SL Sarkar, KV Jogi, A Mohimen
April-June 1978, 10(2):171-173
. Ascorbic acid uptake of homogenised long bone of rats was estimated after 21/2h incubation in Ringer phosphate bicarbonate buffer (pH 7.4) containing 0,1,25,50,100,200 ng/ml cyproheptadine. In a similar experiment, ascorbic acid uptake was estimated in the presence of 25 ng/ml serotonin and a combination of 25 ng/ml each of serotonin and eyproheptadine. Cyproheptadine 25, 50 and 100 ng/ml significantly increased ascorbic acid uptake. while with 200 ng/ml the uptake was significantly reduced. Although serotonin per se did not affect the uptake of ascorbic acid, it inhibited cyproheptadine induced increase in ascorbic acid uptake.
[ABSTRACT]   Full text not available  [PDF]
  1,076 69 -
Effect of glucose and epinephrine on pentobarbital anaesthesia in dogs
SP Sinha, G Achari
April-June 1978, 10(2):159-161
. Glucose and epinephrine significantly (P < 0.01) prolonged the duration of pentobarbital anaegthasia by 51.9% and 40.5% respectively. But when given together, the duration of anaesthesis was reduced by 7.8%. Tha we of glucose and epinephrine together can therefore be made without any danger of potentiation of barbiturate anaesthesia In spite of potentiation by glucose and epinephrine, the dose of pentobarbital cannot be reduced.
[ABSTRACT]   Full text not available  [PDF]
  1,075 66 -
Phenformin on blood lactate in dogs
RB Patel, TP Gandhi, GF Shah, VC Patel, RN Gilbert
April-June 1978, 10(2):167-169
. Administration of phenformin 10-20 mg/kg, chlorpropamide 20 mg/kg and their combination 10 mg/kg and 20 mg/kg respectively p.o. daily to normal dogs for 12 weeks were studied for the. effect on resting blood lactic acid level. Phenformine 10 mg/kg daily either alone or in combination with chlorpropamide does not increase the blood lactate level. Administration of a high dose (50 mg/kg) of phenformin in a slow i.v. drip for 4 consecutive days to normal healthy dogs does not induce hyperlactacidaemia.
[ABSTRACT]   Full text not available  [PDF]
  1,033 62 -
RESEARCH PAPER
Effect of alpreonolol and N-isopropylmthoxamine on the pacemaker of the isolated rabbit atria accelerated by isoprenaline or histamine
Pal Singh Kushal
April-June 1978, 10(2):139-145
In order to determine the selectivity of alprenolol and N-isopropylmethoxamine (IMA) as specific beta adrenergic receptor blocking agents on the cardiac pacemaker, their effects against two rate accelerating agents i.e. isoprenaline and histamine were studied on the isolated rabbit right atria. Isoprenaline acts through cardiac beta adrenergic receptors. Where as histamine effect is neither through these receptors nor through cardiac norepinephrine stores. Alprenolol selectively antagonized the rate accelerating effect of isoprenaline without having any significant effect against the rate accelerating effect of histamine; whereas IMA antagonized the rate accelerating effects of both isoprenaline and histamine. These results suggest that antagonism produced by alprenolol is related to its beta adrenergic receptor blocking action; while the antagonism produced by IMA is of nonspecific nature.
[ABSTRACT]   Full text not available  [PDF]
  1,035 56 -
RESEARCH PAPER
O-ethyl-S, S-diphenyl phosphorodithioate induced hyperglycaemia and hyperlactacidaemia in buffalo calves
JK Malik, BD Garg, A Ahmad
April-June 1978, 10(2):153-158
. The effect of single oral doses (30,45 and 60 mg/kg) of O-ethyl-S, S-diphenyl phosphorodithioate (Hinosan) on Mood glucose and lactic acid levels were studied in healthy male buffalo calves. A significant (P<0.01) increase in the blood glucose and lactic acid levels was observed with all the doses of Hinosan. The increase in both the parameters was found to be dose dependent and the peak effect was observed between 12 and 24 h. The elevated values of blood glucose and lactic acid of survivors returned to almost pretreatment levels within 48 h of Hinosan administration. A correlation of these biochemical alterations with adrenal medullary and cortical activities is discussed.
[ABSTRACT]   Full text not available  [PDF]
  1,011 65 -
RESEARCH PAPER
Interaction of oxotremorine and drugs inhibiting transmitter release of skeletal myoneural junction
SK Chaudhuri
April-June 1978, 10(2):115-120
Full text not available  [PDF]
  951 83 -
RESEARCH PAPER
Hypercholesterolemic effect of angiotensin
KN Singh, RK Mittal, V Mishra, V Chandra
April-June 1978, 10(2):135-138
. Angiotensin II administered i.c.v. resulted in a significant increase in blood cholesterol level in dogs. The hypercholesterolemic effect of angiotensin was not observed in bilaterally vagotomized or in hepatectomized dogs. It is suggested that centrally administered angiotensin exerts its effect on liver through vague. It is possible that i.c.v. administration of angiotensin inhibits the vagal centre in the CNS which brings about an increase in blood cholesterol level.
[ABSTRACT]   Full text not available  [PDF]
  939 67 -
Effect of propranolol on ethanol induced narcosis in albino mice
AP Saraf, GV Joglekar
April-June 1978, 10(2):147-152
Full text not available   
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