Evaluation of acute toxicity of genabilic acid (menbutone 10%) in rabbits

[EN] A complete investigation of the acute toxicity of a choleretic compound, menbutone, was performed in rabbits, including lethal dose for 50% of rabbits determination, clinical signs observation and in vivo and post-mortem examinations. Haematological, biochemical and histopathological changes resulting from intramuscular injection of menbutone were also investigated at dose 400 mg/kg body weight. Acute toxicity of menbutone at dose of 400 mg/kg BW induced interstitial myocarditis and multifocal necrosis, whereas serum creatine phosphokinase, creatinine phosphokinase-MB isoenzyme and aspartate aminotransferase activities were significantly increased. Elevation of serum alanine aminotransferase and alkaline phosphatase activities and total bilirubin level associated with lowered albumin content was consistent with histopathological changes of hepatic tissues; hepatic necrosis and fatty infiltration were pronounced indicators of injuries. Renal tubular necrosis and interstitial nephritis were also observed in intoxicated rabbits. Menbutone also induced variations in some haematological parameters. We concluded that acute toxicity of menbutone in rabbits occurred at accidental high doses, as the lethal dose was about 50 fold over the recommended therapeutic dose for other animals. Cardiac muscle, liver and kidneys are the main target organs for menbutone toxicity. Menbutone is not recommended for use in rabbits suffering from any cardiacand hepatic disorders, especially in overdosing situations.El Okle, SO.; Tohamy, GH.; Lebda, AM. (2014). Evaluation of acute toxicity of genabilic acid (menbutone 10%) in rabbits. World Rabbit Science. 22(3):215-222. doi:10.4995/wrs.2014.1791.SWORD215222223Cardinale, D., Sandri, M. T., Colombo, A., Colombo, N., Boeri, M., Lamantia, G., … Cipolla, C. M. (2004). Prognostic Value of Troponin I in Cardiac Risk Stratification of Cancer Patients Undergoing High-Dose Chemotherapy. Circulation, 109(22), 2749-2754. doi:10.1161/01.cir.0000130926.51766.ccCulling C.F. 1983. Handbook of Histopathological and Histochemical Techniques, 3rd ed. London, Boston: Butterworth.De la Cruz-Hernández N.I., Argudín-Salomón O.A., Zertuche- Rodríguez J.L., Medellín-Ledezma J.A., Flores-Gutiérrez G.H. 2012. Case report: outbreak of sodium monensin intoxication in feedlot cattle from Mexico. Revue Med. Vet., 163: 60-63.Pershin G.N. 1971. Methods of experimental chemotherapy: Practical guidance, 2nd edition, Moscow. Russia: Medicina

Внедрение и принцип работы системы сейсмического мониторинга горного массива для работы в условиях ООО "Шахта "Усковская"

The status of the Silicon Microvertex Detector (SMD) and its installation into the LEP-L3 experiment are presented, highlighting novel features and sophisticated techniques. Preliminary results based on 1993 data are given and compared with Monte Carlo predictions, to understand the detector performances and its tracking capabilities

Histological, ultrastructural, and genetic investigatory comparison between different types of experimentally - Induced antemortem burns

Background: Burn is a cutaneous injury that is caused by heat, electricity, chemicals, freezing, and radiation. Aims and Objectives: This study aimed to differentiate between dry heat burn injury and other common cutaneous burn injuries. Materials and Methods: For this, different types of dermal burns were created experimentally in four groups of rats, 5 rats for each, as the following: dry heat burn model, scalding model, chemical burn model, and electrical burn model. The burnt skin and hair samples were subjected to scanning electron microscopic examination, molecular assay of aquaporin-3 (AQP-3) gene expression, and histopathological investigation. Results: There were crakes, holes, and cuticular irregularity in hairs exposed to both dry heat and sulfuric acid (chemical burn), while the major lesion observed in hairs exposed to boiling water (scald injury) was cuticular cell loss. On the other hand, dry burnt skin showed empty orifices of the hair and sebaceous gland with overlapped smooth lamella, while scald induced irregularity of collagen fibers. The sulfuric acid produces separation of the epidermis from the dermis and irregularity in collagen fiber. Rat skin exposed to electric current appears with fissure, lacerated edges, and erected broken hairs. Despite AQP-3 gene expression was significantly upregulated in the burnt skin of all experimental models in comparing with control rats, dry heat burned skin showed the highest upregulated level. In addition, the coagulation of the dermoepidermal cells and vesicles formation were the most pronounced lesions observed in all types of burns, while scald was distinguished by appearance of elongated cellular nuclei. Conclusion: These observations suggest the possibility to differentiate between dry thermal burn, scald injury, chemical burn, and electrical burn using the combination between scanning electron microscopic examination, analysis of cutaneous AQP-3 gene expression, and histological investigation

Nanocrystalline High-Entropy Alloys: A New Paradigm in High-Temperature Strength and Stability

Metals with nanometer-scale grains or nanocrystalline metals exhibit high strengths at ambient conditions, yet their strengths substantially decrease with increasing temperature, rendering them unsuitable for usage at high temperatures. Here, we show that a nanocrystalline high-entropy alloy (HEA) retains an extraordinarily high yield strength over 5 GPa up to 600 °C, 1 order of magnitude higher than that of its coarse-grained form and 5 times higher than that of its single-crystalline equivalent. As a result, such nanostructured HEAs reveal strengthening figures of merit–normalized strength by the shear modulus above 1/50 and strength-to-density ratios above 0.4 MJ/kg, which are substantially higher than any previously reported values for nanocrystalline metals in the same homologous temperature range, as well as low strain-rate sensitivity of ∼0.005. Nanocrystalline HEAs with these properties represent a new class of nanomaterials for high-stress and high-temperature applications in aerospace, civilian infrastructure, and energy sectors

Ginseng^® Alleviates Malathion-Induced Hepatorenal Injury through Modulation of the Biochemical, Antioxidant, Anti-Apoptotic, and Anti-Inflammatory Markers in Male Rats

This study aims to see if Ginseng® can reduce the hepatorenal damage caused by malathion. Four groups of forty male Wistar albino rats were alienated. Group 1 was a control group that got orally supplied corn oil (vehicle). Group 2 was intoxicated by malathion dissolved in corn oil orally at 135 mg/kg/day. Group 3 orally received both malathion + Panax Ginseng® (300 mg/kg/day). Group 4 was orally given Panax Ginseng® at a 300 mg/kg/day dose. Treatments were administered daily and continued for up to 30 consecutive days. Malathion’s toxic effect on both hepatic and renal tissues was revealed by a considerable loss in body weight and biochemically by a marked increase in liver enzymes, LDH, ACP, cholesterol, and functional renal markers with a marked decrease in serum TP, albumin, and TG levels with decreased AchE and Paraoxonase activity. Additionally, malondialdehydes, nitric oxide (nitrite), 8-hydroxy-2-deoxyguanosine, and TNFα with a significant drop in the antioxidant activities were reported in the malathion group. Malathion upregulated the inflammatory cytokines and apoptotic genes, while Nrf2, Bcl2, and HO-1 were downregulated. Ginseng® and malathion co-treatment reduced malathion’s harmful effects by restoring metabolic indicators, enhancing antioxidant pursuit, lowering the inflammatory reaction, and alleviating pathological alterations. So, Ginseng® may have protective effects against hepatic and renal malathion-induced toxicity on biochemical, antioxidant, molecular, and cell levels

The forward muon detector of L3

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