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Agmatine protection against chlorpromazine-induced forebrain cortex injury in rats
Bratislav Dejanovic,Ivana Stevanovic,Milica Ninkovic,Ivana Stojanovic,Irena Lavrnja,Tatjana Radicevic,Milos Pavlovic 대한수의학회 2016 Journal of Veterinary Science Vol.17 No.1
This study was conducted to investigate whether agmatine (AGM) provides protection against oxidative stress induced by treatment with chlorpromazine (CPZ) in Wistar rats. In addition, the role of reactive oxygen species and efficiency of antioxidant protection in the brain homogenates of forebrain cortexes prepared 48 h after treatment were investigated. Chlorpromazine was applied intraperitoneally (i.p.) in single dose of 38.7 mg/kg body weight (BW) The second group was treated with both CPZ and AGM (75 mg/kg BW). The control group was treated with 0.9% saline solution in the same manner. All tested compounds were administered i.p. in a single dose. Rats were sacrificed by decapitation 48 h after treatment Treatment with AGM significantly attenuated the oxidative stress parameters and restored antioxidant capacity in the forebrain cortex. The data indicated that i.p. administered AGM exerted antioxidant action in CPZ-treated animals. Moreover, reactive astrocytes and microglia may contribute to secondary nerve-cell damage and participate in the balance of destructive vs. protective actions involved in the pathogenesis after poisoning.
The Coexistence of Myasthenia Gravis and Myotonic Dystrophy Type 2 in a Single Patient
Ana Nikolic,Vidosava Rakocevic Stojanovic,Stanka Romac,Dusanka Savic,Ivana Basta,Dragana Lavrnic 대한신경과학회 2013 Journal of Clinical Neurology Vol.9 No.2
Background Myasthenia gravis (MG) and myotonic dystrophy type 2 (DM2) are rare disorders individually, and their coexistence in the same patient is very rare. We present a patient in which these two diseases coexisted. Case Report The patient complained of diplopia, fluctuating limb weakness, and difficulties in swallowing and speaking. A neurological examination revealed diplopia, facial, weakness of the neck and proximal limb muscles, dysphagia, dysphonia, and myotonia. The patient’s mother had DM2 and her maternal grandfather had cataracts. MG was confirmed in our patient by positive results for neostigmine and a repetitive nerve stimulation test, and elevated serum antiacetylcholine-receptor antibodies, while DM2 was confirmed by electromyography and genetic testing. The patient improved remarkably after treatment with anticholinesterases, corticosteroids, and azathioprine. Conclusions This is the second reported case of the coexistence of DM2 and MG in the same patient. Since the symptoms of these two diseases overlap it is very important to keep in mind the possibility of their coexistence, so that MG is not overlooked in patients with a family history of myotonic dystrophy.
Marija Ðošic,Sanja Erakovic,Ana Jankovic,Maja Vukašinovic-Sekulic,Ivana Z. Matic,Jovica Stojanovic,이경엽,Vesna Miškovic-Stankovic,박수진 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.47 No.-
Graphene (Gr) and natural polymer chitosan (CS) were introduced to hydroxyapatite (HAP) to produce athree-component composite coating, which was fabricated by cathodic electrophoretic deposition on Tisubstrates in an ethanol suspension. These HAP/CS/Gr coatings were characterized by X-ray diffraction(XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-rayphotoelectron spectroscopy (XPS) and electrochemical measurements and found that the graphene intoHAP/CS composites significantly improves their morphology, thermal stability, and bioactivity. BothHAP/CS and HAP/CS/Gr composite coatings are classified as non-cytotoxic when tested against healthyperipheral blood mononuclear cells (PBMC), while antibacterial activity against Staphylococcus aureusand Escherichia coli could not be verified.