Effect of meloxicam coadministration on the anaesthetic potency of thiopental sodium in a chick model

Few studies have dealt with thiopental sodium-induced anaesthetic action and the effect of combining meloxicam (a high plasma protein-bound) in 10–15 day old chicks. First, the analgesic median effective dose (ED50) was determined as 35.85 mg/kg, IM by up-and-down routine, while the hypnotic ED50 value was 34.40 mg/kg, IM in the chick model. A thiopental sodium injection (18, 36 and 72 mg/kg, IM) produces a significant dose-responsive hypnotic effect in chicks, determined by the beginning of the lack of a righting reflex, duration and recovery time. Thiopental sodium and meloxicam (72 and 1 mg/kg, IM) in combination shortened the beginning of hypnosis, and significantly extended its duration, with a significant increase in recovery time from the hypnotic effect when compared to the group receiving only thiopental sodium. The same combination also elicited a significant increase in the analgesic percentage and efficacy, and significant increase in the voltage current estimated via using electrical stimulation to induce the ache feeling. No significant changes were found in the concentrations of serum glutamate pyruvate trans-aminase (GPT), glutamate oxalo-acetate trans-aminase (GOT) with body temperature between the two groups, with the exception of a significant change in respiratory rate. The outcomes of this study support the prospect of using thiopental sodium as an anaesthetic agent for veterinary surgical procedures in the chicks, in combination with meloxicam, to produce worthy, consistent, and proficient anaesthesia.

Peculiarities of cytolytic syndrome development with associated injury of the abdominal organs and massive blood loss in the experiment

The function of the organs responsible for detoxification processes, in particular the liver, deserves a special role in the conditions of combined trauma. It is proved that ischemia-reperfusion of the limb caused by the imposition of a tourniquet, is the cause of significant toxemia. Under such conditions, it becomes clear that the detoxification function may be impaired, especially against the background of blunt combined trauma to the abdominal organs complicated by massive bleeding. Changes in the detoxification function of the liver are indicated by markers of the cytolytic syndrome. However, there is no clear understanding of how ischemia - limb reperfusion affects the development of cytolytic syndrome.Objective of research: to study the effect of massive blood loss associated with ischemia-reperfusion of the limb on the cytolytic syndrome indicators in case of injury of the abdominal organs. Materials and methods. 100 mature albino male Wistar rats with the body weight of 190-220 grams kept on standard vivarium forage were used in the experiment. The animals were divided into the control and 3 research groups (containing 10 animals each). Arresting bleeding tourniquet was applied proximally on the lower limbs of rats from the first research group for 120 minutes under thiopental-sodium anesthesia (40 mg/kg-1), which caused development of ischemic-reperfusion. Closed abdominal injury was simulated by means of delivering two dosed blows in the region of the abdominal cavity in the second research group; massive blood loss was simulated by means of cutting the femoral vessels and bloodletting from 25 to 30 % of the circulating blood volume in the group. Injuries from the first two groups were combined in the third group. The control group of animals received anesthesia without formation of any injuries. With the aim to determine alterations of cytolytic syndrome the activity of enzymes – markers of cytolytic syndrome ALT and AST were determined by means of a unified method. The animals of the research groups were removed from the experiment under thiopental-sodium anesthesia by means of the total bloodletting from the heart.Results. Analysis of the results of the study found that cytolytic syndrome develops irrespective of the kind of injuries simulated. Thus, even during a day of post-traumatic period ALT and AST activity increases which is clearly registered in all the three research groups. Further destruction of cellular membranes increases till the 3rd day, which is manifested by a considerable increase of ALT and AST activity in the blood serum. This process continues till the 7th day. A tendency to ALT and AST decrease is observed only in the 1st group on the 7th day. Comparison of the 2nd and 3rd research groups within the time interval enables to understand that application of tourniquets on the limbs of animals with closed abdominal injury and massive bleeding deteriorates cytolytic processes.Conclusions: Simulated injuries in the research groups were associated with the occurrence of cytolytic processes possessing a tendency to develop in the period of early signs of traumatic disease. Ischemic-reperfusion syndrome of the limbs accelerates considerably the development of systemic changes with abdominal injuries and hypovolemic shock, which was manifested by a considerable increase of ALT and AST parameters in the group with abdominal trauma and massive blood loss and becoming higher than that of the control in end of the experiment.

Alterations of bile secretion indicators with blunt multiple abdominal injury and underlying ischemia-reperfusion of the limbs

It is known that ischemia-reperfusion has a significant negative impact on combined trauma. It is clear that there is an impression and dysfunction of internal organs against the background of activation of systemic pathological processes, especially those responsible for detoxification processes. However, these processes are little studied in detail, in particular regarding the violation of bile secretion. There is no clear data, and evidence of exactly how ischemia-reperfusion affects liver function in the case of blunt combined trauma to the abdominal organs and how much bile production deteriorates. This is what has become the subject of research.Objective of research: to study dynamic peculiarities of the liver bile secreting function in response to abdominal injury complicated by hypovolemic shock and ischemic-reperfusion syndrome. Materials and methods. 80 mature albino male Wistar rats with the body weight of 190-220 grams kept on standard vivarium forage were used in the experiment. The animals were divided into the control and 3 research groups (containing 8 animals each). Arresting bleeding tourniquet was applied proximally on the lower limbs of rats from the first research group for 120 minutes under thiopental-sodium anesthesia (40 mg/kg-1), which caused development of ischemic-reperfusion syndrome. Closed abdominal injury was simulated by means of delivering two dosed blows in the region of the abdominal cavity in the second research group; hypovolemic shock was simulated by means of cutting the femoral vessels and bloodletting from 20 to 22 % of the circulating blood volume in the group. Injuries from the first two groups were combined in the third group. The control group of animals received anesthesia without formation of any injuries. Bile secreting function of the liver was studied on the basis of identification of the content of total, conjugated/direct and unconjugated/indirect bilirubin in bile, and the volume of bilirubin conjugation degree in bile. The animals of the research groups were removed from the experiment under thiopental-sodium anesthesia by means of the total bloodletting from the heart.Results. A considerable disorder of the bile secreting function of the liver was found in response to simulated injuries: bile secretion rate in the first research group in comparison with the control one achieves minimal values in 3 days and remains on the same level till the seventh day of the post-traumatic period. In the second group the parameter does not change during 1-3 days, though it decreases sharply in seven days. Unidirectional decrease was found in the third group till the seventh day of the experiment.The data obtained are clearly indicative of a negative effect of ischemic-reperfusion syndrome on the bile-forming and bile secreting functions of the liver. Effect of the liver function was found both with isolated action and with multiple injuries of the abdominal organs, when bilateral compromised syndrome is observed. Conclusions: The study proved that the combined blunt trauma of the abdominal organs negatively affects the process of bile formation. Also, in the presence of ischemia-reperfusion of the limb, pathological processes are characterized by a tendency to increase significantly.

Effect of General Anesthesia with Thiopental Sodium and Propofol on the 1- and 5 minute Apgar newborns by Cesarean

Background: The Apgar score of newborn babies is a determining factor involved with mortality of newborns after birth. Regarding the disagreement on advantages and possible disadvantages of propofol and thiopental in the available references, the study was triggered with the aim of analyzing effects of two mentioned drugs on babies’ Apgar score. Methods: In this double-blind clinical trial, a total of 100 healthy women who volunteered to undertake cesarean operation were selected and then divided randomly into two equal groups using statistical blocking. One group was treated by propofol while other one was treated by thiopental. The prescribed drugs for both groups were identical. Babies’ Apgar score 1 and 5 minutes after birth and recovery period and some of the critical maternal parameters after operation were recorded. The obtained data were analyzed by SPSS 19 software. Results: Apgar score I minute 1 (p=0.317) and Apgar score in minute 5 (p=1.00) for propofol group were not different meaningfully. The groups had significant differences in the indices such as first systolic (P=0.00) and diastolic (P=0.00) pressure in recovery, last diastolic pressure in recovery (P=0.001) and duration of postoperative recovery (P=0.001). Statistical analysis of nausea and vomit in both groups showed that they are lower in propofol group rather than the thiopental group (p=0.000). Conclusion: Propofol and thiopental did not differ significantly in Apgar score, but it seems that propofol can be a better option to induce anesthesia for an elective cesarean operation.

In vitro and in vivo evaluation of pharmacological potential of Begonia barbata Wall

Background Begonia barbata Wall is an important medicinal plant in Bangladesh used to treat several human diseases. The intention of the existing work was to determine in vitro and in vivo pharmacological properties of petroleum-ether, dichloromethane, and ethyl acetate soluble fractions of methanol extract of B. barbata whole plant (MEBB). The total phenolic content (TPC) was determined by Folin-Ciocalteu test while antioxidant activity assay was performed by DPPH radical quenching process. Tail immersion and acetic acid-induced writhing methods were utilized to evaluate analgesic effect in albino mice. To evaluate the hypoglycemic potential, glucose tolerance test is used. Castor oil-induced diarrhea method is utilized to figure out the anti-diarrheal action in mice. Thiopental-sodium-induced sleeping time test was exploited for the appraisal of CNS antidepressant action. Results Antioxidant activities of the test materials followed the order: dichloromethane fraction (DCMF) > ethyl acetate fraction (EAF) > petroleum-ether fraction (PEF). The EAF yielded maximum amount of phenolic compounds (12.47 mg of GAE/g of sample). The DMF was most effective in terms of thrombolytic activity while the EAF protected the membrane integrity of erythrocyte by 63.47% inhibition of hemolysis induced by heat. Among all fractions, the PEF (400 mg/kg body weight) demonstrated highest analgesic activity in both tail immersion test (maximum elongations as 262.053%) and acetic acid-induced writhing method (66.02% writhing inhibition). During anti-diarrheal test, the plant samples significantly diminished the frequency of diarrheal episodes in mice. Similarly, the plant samples decreased the sleeping duration induced by thiopental sodium. Conclusion The above outcome exposed that B. barbata possesses significant pharmacological potential, which validates its use in Bangladesh folk medicinal practices.