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Jul 2020 DOI 10.14302/issn.2377-2549.jndc-20-3413
M.A. Shihata AhmedCorresponding author
Forensic Medicine Authority, Chemical Lab, Egypt
Two analgesic were determined opium (morphine) and tramadol and comparison between two methods of extractions from biological samples. Opium and its derivatives and tramadol are the most commonly used medications for treatment of acute and chronic pain. opium was used as a sedative and hypnotic, but it was determined to be addictive and tramadol prescribed narcotic analgesic; main metabolite of opium is morphine and tramadol overdose was reported old male 40 years. Morphine and tramadol isolated by two methods of extraction, Stas Otto and ammonium sulfate extraction from liver tissues and comparison between efficiency of the two methods. Liver extractions have morphine and tramadol was quantified by GC-MS. Morphine was determined in liver concentration 176 u/g in Stas Otto. Liver concentration of morphine 267 u/g in ammonium sulfate extraction. Tramadol was determined in liver concentration 26.18 u/g in Stas Otto. Liver concentration of tramadol 22.41 u/g in ammonium sulfate extraction.
Feb 2019 DOI 10.14302/issn.2578-8590.ipj-19-2623
Hinzpeter JaimeCorresponding author
Department of Orthopaedic Surgery, Clinical Hospital, University of Chile, Santos Dumontt # 999, Independencia, Zip Code: 8380456, Santiago, Chile.
Neosaxitoxin (NeoSTX) is a specific high-affinity inhibitor of voltage-dependent sodium channels, which has shown excellent results as a local anesthetic in various pathologies and post-operative protocols, since it effect is long-lasting and have virtually no side effects.The aim of this study was to analyze the effect of NeoSTX as an epidural anesthetic in female cats, undergoing ovariohysterectomy, compared to Lidocaine in a randomized and double-blind study. Two groups of 11 female cats were randomly in the NeoSTX group and the lidocaine group. They were administered, respectively, a single dose of NeoSTX (0.5 μg / kg) or lidocaine (4 mg / kg, 2%) by epidural via. Using the UNESP-Botucatu pain assessment scale, which considers multiple behavioral and physiological factors, the epidural anesthetic effect of NeoSTX and lidocaine was evaluated, up to 240 min after the ovariohysterectomy procedure. NeoSTX no altered the peripheral blood pressure during the cut of uterine cervix, and generated lower values on the pain scale as compared to the lidocaine treatment. None of the cats anesthetized with NeoSTX required an extra dose of pain-relieving drugs (2 mg / kg of tramadol) during the first 150 min after surgery, whereas nine cats from the lidocaine group did need an extra dose of analgesic. NeoSTX is a powerful pain blocker, with a long-lasting anesthetic effect when administered by an epidural procedure. Therefore, NeoSTX emerges as a promising alternative to conventional anesthetics for the treatment of postoperative pain.
Oct 2016 DOI 10.14302/issn.2572-5424.jgm-16-1170
Majid Khan GulCorresponding author
Department of Pharmacy, Quaid-i-Azam University, Islamabad 45320, Pakistan
Background: Skin is one the most important sites for administration of drugs to obtain desired pharmacological effects either locally or through systemic bioavailability; and this has placed the transdermal route of drug delivery as an attractive and as one of the most innovative areas for conducting drug delivery research. However the stratum corneum in skin creates hurdles and acts as significant barrier for the permeation of drugs through skin. Penetration enhancers play a pivotal role to overcome such barriers and help enhance the permeation of drug through skin. However, penetration enhancement technology is challenging development and needs to be properly and skillfully addressed. Objective: The present investigation aimed to study the penetration enhancing effect of a newly synthesized alcohol derivative of an acyclic monoterpene (Tetrahydrogeraniol-THG). Methodology: The new derivative, 5,9-Dimethyl-1-Decanol (DIMDOL), has been synthesized by a chemical reaction of the THG with Grignard reagent and ethylene oxide. Permeation enhancing effect of the synthesized derivative was explored for better transdermal penetration of the two model drugs viz. tramadol hydrochloride and 5-fluorouracil (5-FU) through the excised rat skin by conducting in-vitro permeation experiments employing Franz diffusion cells apparatus. The standard enhancers Azone and THG were used to compare penetration enhancing effect of the enhancers. Results: It was revealed that DIMDOL could effectively enhance the permeability of both the drugs by 18.60 and 73.19 folds across the skin used with a lag time of 3.35 and 1.20 h, respectively. The newly synthesized derivative was found to significantly increase the partition coefficient and diffusion coefficient values. Conclusion: The results obtained suggest that DIMDOL can more effectively enhance the permeation of these model drugs, expectedly by affecting the stratum corneum and interacting with both lipid-rich layers and keratin-rich layers of the excised rat skin.