Anesthetics are drugs that reversibly relieve pain, decrease body movements and suppress neuronal activity. Most drugs only cover one of these effects; for instance, analgesics relieve pain but fail to block primary fiber responses to noxious stimuli. Alternately, paralytic drugs block synaptic transmission at neuromuscular junctions, thereby effectively paralyzing skeletal muscles. Thus, both ...

RATIONALE Stable isotope analysis is a critical tool for understanding ecological food webs; however, results can be sensitive to sample preparation methods. To limit the possibility of sample contamination, freezing is commonly used to euthanize invertebrates and preserve non-lethal samples from vertebrates. For destructive sampling of vertebrates, more humane euthanasia methods are preferred ...

In recent years, use of lumpfish (Cyclopterus lumpus L.) as cleaner-fish to remove sea-lice have been chosen by many salmon farmers in Europe and Canada as an alternative to medical treatment, which has led to large scale production of lumpfish. At present, there is limited knowledge of how lumpfish respond upon anaesthesia, which anaesthetics and concentrations that are efficient and condition...

A case is reported in which a patient developed methemoglobinemia-induced cyanosis while under general anesthesia during surgery for multiple fascial space infections. The cause of methemoglobinemia was 20% benzocaine spray used for local anesthesia before intubation. Acutely developing methemoglobinemia is infrequently encountered in clinical practice. When confronted with cyanosis in the abse...

PURPOSE The purpose of this investigation was to compare the pain responses of children during local anesthetic infiltration at bilateral palatal sites prepared with the topical application of benzocaine 20% oral adhesive (Orabase-B) versus benzocaine 20% gel (Hurricaine) or EMLA 5% oral adhesive (EMLA 5% cream in Orabase Plain). METHODS Forty subjects, aged 7-15 years old, received bilateral...

According to the classic modulated receptor hypothesis, local anesthetics (LAs) such as benzocaine and lidocaine bind preferentially to fast-inactivated Na channels with higher affinities. However, an alternative view suggests that activation of Na channels plays a crucial role in promoting high-affinity LA binding and that fast inactivation per se is not a prerequisite for LA preferential bind...

the hydroalcoholic extracts of dried ligulate florets of calendula officinalis l., dried leaves of plantago major l., and dried aerial parts of vinca major l. were prepared and used as the main active ingredients of two types of anti-anorectal disease ointments and suppositories. benzocaine was used in one of the formulations, while a mixture of belladonna dry extract and ephedrine sulfate was ...

Compounding formulations, including semi-solid medication forms, must meet criteria related to specific stability and quality, during a period of their use. In suspension-type ointments, one the for assessment correct manufacturing is particle size, which in compounding preparation cannot exceed 90 µm. An appropriate level disintegration can be achieved via selection technological parameters qu...

The immediate environment of a molecule can have a profound influence on its properties. Benzocaine, the ethyl ester of para-aminobenzoic acid that finds an application as a local anesthetic, is found to adopt in its protonated form at least two populations of distinct structures in the gas phase, and their relative intensities strongly depend on the properties of the solvent used in the electr...

Both local anaesthetics and calcium antagonists depress cardiac function. Therefore, we have studied the interaction of these compounds in the isolated myocardium of guineapigs. The negative inotropic effect of various local anaesthetics was investigated in left atria in the absence or presence of nitrendipine 10(-7) mol litre-1 (n = 7-8 in each group). In addition, the effect of bupivacaine wa...