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Biomedical subjects

B H Ali

Publications and source records attributed to B H Ali.

At least 109 records · Page 6Linked to original sources
PubMed1990

Effect of dimethylsulphoxide on cysteamine-induced duodenal ulceration in rats.

1. Rats were pretreated with dimethylsulphoxide (DMSO) at concentrations of 2, 4 and 6% v/v in the drinking water for 7 days, then injected with a single subcutaneous dose of cysteamine (28 mg/100 g bodyweight) to induce duodenal ulceration. 2. DMSO reduced, in a dose-dependent manner, the incidence and extent of the ulceration. 3. Mucus duodenal content was not significantly affected by either DMSO or cysteamine treatments.

Animals↗
PubMed1990

Glutathione and ascorbic acid concentrations in the duodenum of rats with cysteamine-induced ulcers: influence of cysteine and ascorbic acid pretreatments.

Duodenal ulceration in rats was induced by a single subcutaneous injection of cysteamine at doses of 7, 28, 42 and 65 mg/100 g body weight 24 h before killing. Duodenal ulceration induced by cysteamine was dose-dependent. However, at 65 mg/100 g body weight, 5 of 6 animals died within 24 h. The concentrations of reduced glutathione (GSH) and ascorbic acid were measured in the duodenal homogenates of cysteamine-treated rats. The ulcerogen, at doses of 28 and 42 mg/100 g body weight, significantly reduced the GSH concentration. At a dose of 28 mg/100 g body weight, however, it did not significantly affect the duodenal ascorbic acid concentration. Pretreatment of rats with daily intramuscular injections of cysteine at 25, 50 and 100 mg/kg or ascorbic acid at 50, 100 and 200 mg/kg for 7 days had no significant effect on the duodenal ulceration produced by cysteamine (28 mg/100 g body weight), although each pretreatment significantly raised the duodenal concentrations of GSH and ascorbic acid respectively, in control rats, and to a lesser extent in cysteamine-treated animals.

Animals↗
PubMed1989

Effect of furazolidone and nitrofurazone on brain gamma-amino butyric acid and glutamate concentrations in chickens.

1. The concentrations of gamma-amino butyric acid (GABA) and glutamate were measured in the brains of chickens which were treated with furazolidone (FZ) or nitrofurazone (NF) at oral doses of 12.5, 25 or 50 mg/kg for 5 days. 2. At the end of the treatment, the birds lost about 9% of their bodyweight when on the small dose of FZ or NF and about 18% when on the high doses. 3. Both drugs produced dose-dependent increases in the concentrations of GABA and glutamate which were statistically significant at doses of 25 and 50 mg/kg of NF, and 50 mg/kg of FZ.

Animals↗
PubMed1989

Protective effect of dimethylsulphoxide in stress- and indometacin-induced gastrointestinal ulceration in rats.

The protective effect of dimethylsulphoxide (DMSO) against stress- and indometacin-induced gastrointestinal ulcers was assessed in rats. It was found that stress (restraint at 4 degrees C for 3 h) produced mucosal lesions in the stomach antrum and corpus, and the small intestine. DMSO given in the drinking water at concentrations of 1, 2, 4 or 6% (v/v) 7 days before the application of stress produced dose-dependent decreases in both the number of ulcers and the ulcer index (UI). These decreases were significant at doses of 4 and 6% (v/v). Indometacin was effective in producing ulcers in the gastric antrum and small intestine, but not in the corpus of the stomach, when it was given to rats fasted for 24 h and fed for 1 h before drug administration. Again, pretreatment with DMSO, at doses of 4 and 6% (v/v) for 7 days was effective in reducing significantly the number of ulcers and the UI in the indometacin-treated rats. At all doses of DMSO there were no significant changes in the haemogram or in the histological (light microscopic) picture of the organs examined. A small reduction (6%) in the body weight was observed in rats on the higher dose of DMSO, probably due to decreased feed intake (10%) in this group. Further pharmacological and toxicological studies on DMSO seem warranted.

Animals↗
PubMed1989

Some clinical, haematological and biochemical effects of four tranquilizers in camels (Camelus dromedarius).

Six healthy camels were treated with the tranquilizers propionyl promazine (Combelen), xylazine (Rompun), acepromazine (Calmivet) or chlorpromazine (Largactil) at single intramuscular doses of 0.5, 0.25, 0.1, or 3 mg/kg, respectively; and the onset, duration and degree of sedation produced by each drug was assessed for six hours. The effect of the treatments on some haematological and biochemical parameters was also studied. The onset and duration of action of the tranquilizers were 10 min and 2.1 +/- 0.5 h for propionyl promazine, 4 min and 3.1 +/- 0.4 h for xylazine, 5 min and 2.3 +/- 0.5 h for acepromazine, 7 min and 2.5 +/- 0.4 h for chlorpromazine, respectively. It was observed that 5-10 min after the administration of the four drugs, camels showed slight irritability, dropping of the lower lips and scratching of the nostrils against objects. During the first hour after medication camels showed frequent urination, defaecation and lacrimation. Xylazine seemed to be superior to the other three drugs in producing sedation. No significant effect on the rectal temperature or the respiratory rates of treated camels was seen after the administration of the four drugs. There were consistent, but statistically insignificant decreases (about 10 p. 100) in the haemoglobin concentration and erythrocyte counts of camels one hour after treatment with the tranquilizers. The four drugs, particularly xylazine and propionyl promazine produced significant hyperglycaemia, but did not alter significantly the plasma concentration of urea or activity of aspartate aminotransferase.

Animals↗
PubMed1989

Childhood and youth in a population of the Shendi area (Sudan).

This report provides actual information on birth, infancy childhood, and puberty, as well as the development until the marriageable age with respect to customs, ethnic, religious, and social factors of a population in the Shendi area (Sudan) sampled in the village of Umm'Ali: Informations of this nature might be important in view of planning, performance, and efficiency of medical and other measures of health policy directed on special populations.

Adolescent↗
PubMed1988

A survey of some drugs commonly used in the camel.

Specific recommendations for drug dosages for the camel are rare and doses for this species are usually extrapolated from those recommended for other species. The pharmacology and toxicity of drugs likely to be used in the camel needs to be further studied to ensure the efficacy and safety of these drugs in this species. Most of the reported work is on the chemotherapeutic efficacy of a few drugs long in use in other species against trypanosomiasis, mange and gastrointestinal nematodes. Areas of study most deficient are pharmacodynamics, pharmacokinetics and drug metabolism. The anatomical, physiological and biochemical peculiarities of the camel warrant more pharmacological and toxicological studies in this species. This article surveys the literature on the pharmacology, toxicity and therapeutic uses of some antiparasitic and antibacterial drugs and central nervous system depressants commonly used in the camel. It appears that camels are more susceptible to the toxic action of some trypanocidal drugs than other species. In certain cases they may metabolize some drugs differently. In general, the camel appears to be a good subject for analgesics and anaesthetics.

Analgesics↗
PubMed1988

Some effects of water deprivation on dorcas gazelle (Gazella dorcas) in the Sudan.

1. The effects of dehydration for 10 days and subsequent rehydration for 2 days on some physiological and biochemical parameters were studied in the Dorcas gazelle. 2. At the end of the 10 days of dehydration, feed intake and body weight were decreased by 42 and 29% of the control values, respectively. Rehydration restored most of the loss in feed intake and body weight. 3. Dehydration decreased the water content in the faeces of the gazelles by 41%. Rehydration restored 36% of the lost faecal water. Urine volume in dehydrated animals decreased by 66%, an effect which was readily reversed by rehydration. 4. Blood haemoglobin of dehydrated gazelles decreased by 22% but this effect was not reversed by rehydration for 2 days. 5. Dehydration for 10 days decreased the concentration of serum glucose by 34% and increased that of urea and albumin by 34 and 18%, respectively. Dehydration for 2 days reversed these effects completely. 6. The serum concentrations of sodium, potassium and chloride were increased by dehydration by 23, 44 and 18% respectively. After 2 days of rehydration the values returned to normal. 7. No change in the heart rate, pulse or temperature was found during the dehydration period. 8. The gazelles survived the 10 days of dehydration, although they tended to be drowsy, weak and emaciated during the last 2 days of dehydration. The animals appeared normal after rehydration.

Animals↗
PubMed1988

Effects of furazolidone or nitrofurazone on the concentrations of hypothalamic amines and plasma luteinizing hormone (LH) and prolactin (PRL), levels in young turkeys.

1. Furazolidone (30 mg/kg) given orally for 14 days produced significant increases in the hypothalamic concentrations of noradrenaline, adrenaline and dopa. The amine concentrations returned to normal one week after withdrawal of the drug. 2. Nitrofurazone (30 mg/kg) given orally for 14 days did not affect significantly the hypothalamic amine concentrations. 3. Nitrofurazone (30 mg/kg, 14 days) increased significantly the plasma concentration of prolactin (PRL) and decreased luteinizing hormone (LH). The concentrations of the two hormones returned to normal one week after the drug withdrawal. Furazolidone (7.5, 15 or 30 mg/kg) did not influence the concentrations of either hormone. 4. Furazolidone (30 mg/kg, 14 days) did not influence the release of LH or PRL after treatment of LHRH or TRH, respectively. Nitrofurazone at the same dose, however, reduced the increases in LH and PRL concentrations induced by LHRH and TRH, respectively.

Amines↗
PubMed1988

The activities of aminopyrine N-demethylase, aniline 4-hydroxylase and UDP-glucuronyltransferase in tissues of camels, desert sheep and Nubian goats.

1. The activities of the drug-metabolizing enzymes, aminopyrine N-demethylase, aniline 4-hydroxylase and UDP-glucuronyltransferase have been measured in vitro in the liver, kidney and duodenal mucosa of camels, sheep, goats and rats. 2. Enzyme activities were generally higher in the liver, followed by the duodenal mucosa, then the kidney in all species. 3. Male kids had much lower enzyme activity in the liver when compared to adult goats, and in the former animal, no measurable activity could be detected in the duodenal mucosa or kidney. 4. In general, goats seemed to have the highest and camels the lowest enzyme activity when compared to the other species. 5. Some sex differences were noted in the three enzymes studied. In sheep duodenal mucosa and rat liver and duodenal mucosa, males had higher aminopyrine N-demethylase than females. In rat liver and goat duodenal mucosa males had higher aniline 4-hydroxylase than females. Male rats had higher UDP-glucuronyltransferase in liver when compared to females.

Aminopyrine N-Demethylase↗
PubMed1988

Some effects of furazolidone on the testis and plasma levels of testosterone, luteinizing hormone and prolactin in mature male turkeys.

Adult male turkeys were treated orally with furazolidone at doses of 1, 2.5, 5 or 20 mg/kg for 14 days and their plasma analysed for luteinizing hormone (LH), testosterone and prolactin (PRL) concentrations before, during and after treatment. At 20 mg/kg the drug produced a significant decrease in the plasma levels of LH and testosterone at the end of treatment, whereas at 5 mg/kg the drug had no significant effect. Prolactin concentrations were unaffected by any of the drug doses used. Intramuscular injection of luteinizing hormone releasing hormone (LHRH) at a dose of 5 micrograms/kg produced after 30 min a significant rise in plasma levels of LH, an effect that was decreased significantly by treatment with 20 mg/kg furazolidone. Incubation of normal turkey semen with graded doses of furazolidone or nitrofurazone for up to 30 min resulted in a dose- and time-dependent decrease in sperm motility. At a concentration of 20 mg/ml a complete absence of sperm motility was observed after incubation with either drug, although, on the whole, nitrofurazone seemed more potent than furazolidone as a sperm-immobilizing agent. Histological changes occurred in the 20 mg/kg group and consisted of a decrease in spermatocyte production, corrugation of sperm cell nuclear envelopes and distention of the endoplasmic reticulum of elongate spermatids. It is concluded that furazolidone depresses pituitary LH output but may, in addition, directly affect spermatogenesis and sperm motility.

Animals↗
PubMed1988

Effect of furazolidone and nitrofurazone on brain gamma-amino butyric acid and glutamate concentrations in chickens.

1. The concentrations of gamma-amino butyric acid (GABA) and glutamate were measured in the brains of chickens which were treated with furazolidone (FZ) or nitrofurazone (NF) at oral doses of 12.5, 25 or 50 mg/kg for 5 days. 2. At the end of the treatment, birds on the small dose of FZ or NF lost about 9% of their bodyweight, and those on the high doses lost about 18%. 3. Both drugs produced dose-dependent increases in the concentrations of GAA and glutamate which were statistically significant at doses of 25 and 50 mg/kg of NF and 50 mg/kg of FZ.

Animals↗
PubMed1987

Influence of thiamin supplements on furazolidone-induced cardiomyopathy in turkey poults.

Furazolidone (700 ppm) was fed to turkey poults from 2 to 5 weeks of age. The drug produced a cardiomyopathy and reduced the feed intake and growth of the birds. Thiamin was concurrently injected into the furazolidone-fed poults to determine whether the vitamin would prevent or reduce the severity of the cardiotoxic effect of the drug. Supplemental injections of thiamin had no significant effect on feed consumption or growth of the birds nor did they protect the heart against the cardiotoxicity. The conclusion is that furazolidone-induced cardiomyopathy is not caused by a thiamin deficiency.

Animals↗
PubMed1987

The effect of thiamin supplementation on the thiamin status of turkey poults with ethanol-induced cardiomegaly.

1. Turkey poults were treated with graded doses (0-5% v/v) of ethanol for 6 weeks. Some birds were concomitantly injected intramuscularly with thiamin. 2. Erythrocyte transketolase (TK) activity was significantly decreased and the erythrocyte pyrophosphate (TPP) effect and blood concentrations of lactate and pyruvate were statistically greater in all ethanol-treated poults by 42 days. 3. Thiamin restored TK activity to normal levels and decreased the TPP effect and blood concentrations of lactate and pyruvate in ethanol poults. 4. Thiamin mitigated ethanol-induced cardiomyopathy in some 4-5% ethanol poults. 5. Thiamin had no significant effect on any of these parameters in control birds treated with thiamin.

Animals↗
PubMed1987

Ethanol-induced alteration in thiamin status of young turkey poults.

The effect of ethanol on thiamin status was determined in the turkey poult, a new animal model for alcohol-induced cardiomyopathy in humans. The poults were given ethanol (4 to 5% v/v) in the drinking water for six weeks post-hatch. This treatment decreased body weights and increased significantly the relative weights of the hearts. Ethanol consumption increased significantly the blood concentrations of pyruvate and lactate, decreased the activity of erythrocyte transketolase (TK), and increased the stimulation of TK activity of thiamin pyrophosphate (TPP) in lyzed blood cells (TPP effect). These findings indicate that ethanol treatment has an adverse effect on the thiamin status of the turkey poult.

Animals↗