Induction of branchial enzymes in snake head (Channa striatus) by oxydemeton-methyl     

G.M. Natarajan 《Pesticide biochemistry and physiology》1985,23(1):41-46

The effects of acute and chronic exposures to a sublethal concentration (1.7 mg/liter) of oxydemeton-methyl (Metasystox) on the activities of branchial enzymes Na, K-ATPase, Mg-ATPase, alkaline phosphatase, acid phosphatase, aspartate aminotransferase, and alanine aminotransferase were determined. While chronic and acute treatments inhibited Na, K-ATPase and Mg-ATPase concentrations, an insignificant rise in the activities of alkaline and acid phosphatases was noticed in the acute treatment. However, both chronic exposures decreased the activities of these phosphatases. A progressive accumulation of AAT and AlAT, with a maximum occurring after 30 days, was recorded. The significance of the results are discussed.  相似文献   

Reassessment Campaign on Veterinary Resuscitation (RECOVER) Initiative small animal CPR registry report 2016–2021     

Sabrina N. Hoehne  Anusha Balakrishnan  Deborah C. Silverstein  Armi M. Pigott  Kelly M. Tart  Elizabeth A. Rozanski  Lisa L. Powell  Manuel Boller  Reassessment Campaign on Veterinary Resuscitation CPR Registry Subcommittee 《Journal of Veterinary Emergency and Critical Care》2023,33(2):143-155

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Fabrication and characterization of nano Al<Subscript>2</Subscript>O<Subscript>3</Subscript> filled PVA:NH<Subscript>4</Subscript>SCN electrolyte nanofibers by electrospinning     

Navin Chand  Neelesh Rai  T. S. Natarajan  S. L. Agrawal 《Fibers and Polymers》2011,12(4):438-443

Present paper reports a method of preparing polymer composite electrolyte nanofiber mat using polyvinyl alcohol (PVA), ammonium thiocynate (NH₄SCN) salt, and aluminium oxide (Al₂O₃) nano particles based on electrospinning technique. Two-stage process of preparation of nanofibers, namely, preparation of nano particles filled PVA electrolyte gel solution followed by its electrospinning has been used. The so obtained nanofibers have been characterized by XRD, DSC, SEM, and Conductivity measurements. XRD patterns affirm the formation of nanocomposite while SEM pictures reveal formation of fibers on a nano scale format (300–800 nm). Fibers of the electrolytes are seen to be thermally stable. Ionic conductivity of electrolyte fiber is seen to improve in the presence of nano filler at room temperature with a maximum at 5.31×10⁻³ Scm⁻¹ for 4 wt% filler concentration, which is comparable to that for corresponding dried gel electrolyte films.  相似文献   

Fabrication of electrospun Poly L-lactide and Curcumin loaded Poly L-lactide nanofibers for drug delivery     

Elakkiya Thangaraju  Natarajan Thirupathur Srinivasan  Ramadhar Kumar  Praveen Kumar Sehgal  Sheeja Rajiv 《Fibers and Polymers》2012,13(7):823-830

The present work reports the preparation of Poly L-Lactide (PLLA) and Curcumin loaded Poly L-Lactide (CPLLA) nanofibers by electrospinning. A series of PLLA solution (12 wt %) and C-PLLA (12 wt % PLLA) solution containing Curcumin (0.5 wt % and 1 wt %)) were electrospun into nanofibers. SEM images showed the average diameter of PLLA and C-PLLA in the range of 50?C200 nm. The TEM images showed the dispersion of Curcumin on C-PLLA nanofibers. The XRD pattern indicated decreases of crystallinity with the increase in the amount of Curcumin. The characteristic peak of Curcumin was confirmed by FTIR. The TGA results showed the degradation of PLLA and C-PLLA close to 300 °C. The percentage porosity and the contact angle of PLLA were found to be 90.2 % and 115±3 ° with deionised water, respectively. The water uptake percentage was found to be 17.6 %. The percentage cumulative release of Curcumin at the end of 8th day for 0.5 and 1.0 wt % formulations was 81.4±1.3 and 86.7±1.7 % respectively. The in-vitro biological cytotoxicity studies were performed using C6 glioma cells and NIH 3T3 fibroblast by MTT assay and SEM analysis.  相似文献   

Chemical composition and antioxidant capacity of the aqueous extract of <Emphasis Type="Italic">Phellodendron amurense</Emphasis>     

Natarajan Velmurugan  Duraisamy Kalpana  Jae Young Cho  Yang Soo Lee 《林业研究》2018,29(4):1041-1048

The aqueous extract of Phellodendron amurense Rupr. (Amur Cork Tree) provides a rich source of antioxidants and chemical compounds, and can be used for food and wood preservative materials. In this study, we characterized the chemical composition of this extract by GC and GC/MS. The antioxidant capacity was evaluated using a variety of antioxidant assays (superoxide radical, hydroxyl radical, nitric oxide radical, and DPPH radical scavenging activity). Additionally, total polyphenolic content was determined. Phenolic acids and acetone derivatives were major compounds of the extract capable of scavenging the DPPH free radical and reducing ferric ions. DPPH and ferric ion reduction results were strongly correlated with total phenolic content of the extract which also exhibited strong nitric oxide, hydroxyl radical scavenging and superoxide anion radical scavenging activities.  相似文献   

Retrospective evaluation of the prevalence,risk factors,management, outcome,and necropsy findings of acute lung injury and acute respiratory distress syndrome in dogs and cats: 29 cases (2011–2013)          下载免费PDF全文

Anusha Balakrishnan BVSc  DACVECC  Kenneth J. Drobatz DVM  DACVECC  DACVIM  MSCE  Deborah C. Silverstein DVM  DACVECC 《Journal of Veterinary Emergency and Critical Care》2017,27(6):662-673

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Prolonged Coagulopathy,Ecchymoses, and Microangiopathic Hemolytic Anemia Following Hump-Nosed Pit Viper (Hypnale hypnale) Bite in Sri Lanka     

Rathnayaka Mudiyanselage M.K. Namal Rathnayaka  Senanayake A.M. Kularatne  Anusha Nishanthi Ranathunga  Mahinda Kumarasinghe  Jayantha Rajapakse  Shirani Ranasinghe 《The Forestry Chronicle》2017,28(3):253-258

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Chemical composition and antioxidant capacity of the aqueous extract of Phellodendron amurense     

Natarajan Velmurugan  Duraisamy Kalpana  Jae Young Cho  Yang Soo Lee 《林业研究》2018,(4)

The aqueous extract of Phellodendron amurense Rupr.(Amur Cork Tree) provides a rich source of antioxidants and chemical compounds, and can be used for food and wood preservative materials.In this study, we characterized the chemical composition of this extract by GC and GC/MS.The antioxidant capacity was evaluated using a variety of antioxidant assays(superoxide radical,hydroxyl radical, nitric oxide radical, and DPPH radical scavenging activity).Additionally, total polyphenolic content was determined.Phenolic acids and acetone derivatives were major compounds of the extract capable of scavenging the DPPH free radical and reducing ferric ions.DPPH and ferric ion reduction results were strongly correlated with total phenolic content of the extract which also exhibited strong nitric oxide, hydroxyl radical scavenging and superoxide anion radical scavenging activities.  相似文献   

Microangiopathic Hemolytic Anemia Following Three Different Species of Hump-Nosed Pit Viper (Genus: Hypnale) Envenoming in Sri Lanka     

Rathnayaka Mudiyanselage M.K. Namal Rathnayaka  Anusha Nishanthi Ranathunga  Senanayake A.M. Kularatne  Jayanthe Rajapakse  Shirani Ranasinghe  Radha Jayathunga 《The Forestry Chronicle》2018,29(1):94-101

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Limited contribution of water availability in genotype-by-environment interaction in sugarcane yield and yield components     

Sijesh Natarajan  Jaya Basnayake  Prakash Lakshmanan  Shu Fukai 《Journal of Agronomy and Crop Science》2020,206(6):665-678

Water deficit is an important abiotic stress factor limiting sugarcane production. Understanding the effect of water deficit on cane yield, yield components and genotype × environment (G × E) interaction can aid in selecting genotypes that are adapted to water deficit conditions. In this study, response of cane yield and yield components of 10 sugarcane genotypes grown under 3 irrigation treatments—fully irrigated, semi-irrigated and rainfed—was examined across 3 locations and 3 crop-years within each location. Cane yield reduced by 32% and 9% in the rainfed and semi-irrigated treatments, respectively, compared to the fully irrigated treatment. Genotypic variation was highly significant for cane yield and yield components in all three irrigation regimes. Cane yield in the rainfed treatment showed significant genetic correlation with stalk diameter (r_g = 0.68), leaf number (r_g = 0.64), node number (r_g = 0.67) and stalk number (r_g = 0.68). Genotype × irrigation variance was negligible compared to genotype, genotype × location and genotype × crop-year variances. Commercial genotypes had higher yield in most environments except in low-yield potential environments, which caused a significant genotype × location × irrigation effect, suggesting opportunities for improving sugarcane productivity in these environments.  相似文献