Celastrus paniculatus seed oil and organic extracts attenuate hydrogen peroxide- and glutamate-induced injury in embryonic rat forebrain neuronal cells

Phytomedicine ◽  
2006 ◽  
Vol 13 (1-2) ◽  
pp. 29-36 ◽  
Author(s):  
P.B. Godkar ◽  
R.K. Gordon ◽  
A. Ravindran ◽  
B.P. Doctor
2011 ◽  
Vol 8 (2) ◽  
pp. 33
Author(s):  
Norfaezah Mazalan ◽  
Mazatulikhma Mat Zain ◽  
Nor Saliyana Jumali ◽  
Norhanim Mohalid ◽  
Zurina Shaameri ◽  
...  

Recently, research and development in the field of drug delivery systems (DDS) facilitating site-specific therapy has reached significant progression. DDS based on polymer micelles, coated micro- and nanoparticles, and various prodrug systems including water-soluble polymer have been prepared and extensively studied as novel drugs designed for cancer chemotherapy and brain delivery. Since polymers are going to be used in human, this study has the interest of testing two types of polymer, polyimides (PI) and polyphenylenevinylene (PPV) on neuronal cells. The objective of this study was to determine the possible neurotoxicity and potential neuroprotective effects of PI and PPV towards SH-SY5Y neuronal cells challenged by hydrogen peroxide (H2O2) as an oxidant. Cells were pretreated with either PI or PPV for 1 hour followed by incubation for 24 hour with 100 µM of H2O2. MTS assay was used to assess cell viability. Results show that PI and PPV are not harmful within the concentration up to 10 µM and 100 µM, respectively. However, PI and PPV do not protect neuronal cells against toxicity induced by H2O2 or further up the cell death.


2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Jirapa Chetsawang ◽  
Piyarat Govitrapong ◽  
Banthit Chetsawang

It has been reported that overproduction of reactive oxygen species occurs after brain injury and mediates neuronal cells degeneration. In the present study, we examined the role of Ras signaling on hydrogen peroxide-induced neuronal cells degeneration in dopaminergic neuroblastoma SH-SY5Y cells. Hydrogen peroxide significantly reduced cell viability in SH-SY5Y cultured cells. An inhibitor of the enzyme that catalyzes the farnesylation of Ras proteins, FTI-277, and a competitive inhibitor of GTP-binding proteins, GDP-beta-S significantly decreased hydrogen peroxide-induced reduction in cell viability in SH-SY5Y cultured cells. The results of this study might indicate that a Ras-dependent signaling pathway plays a role in hydrogen peroxide-induced toxicity in neuronal cells.


Toxicology ◽  
2008 ◽  
Vol 250 (2-3) ◽  
pp. 109-115 ◽  
Author(s):  
Hyo Jung Lee ◽  
Hong-Suk Cho ◽  
Euteum Park ◽  
Seung Kim ◽  
Sook-Young Lee ◽  
...  

Author(s):  
BHARAT MISHRA ◽  
ELEZABETH JOHN ◽  
KRUPAMOL JOY ◽  
BADMANABAN R ◽  
ALEESHA R

Objective: The objective of the study was to evaluate the toxicity profile of Celastrus paniculatus (CP) by performing a preclinical study on Swiss albino mice and demonstrate a safety description through monitoring their autonomic, neurological, behavioral, physical, and biochemistry profiles. Methods: The toxicity profiles (acute and subacute) of CP were evaluated using Swiss albino mice in which they were divided into four groups: Group I received 1% Tween 20 and dimethyl sulfoxide. Group II, III, and IV received CP seed oil orally, at doses of 300, 2000, and 5000 mg/kg body weight for both acute and subacute toxicity studies in accordance with Organization for Economic Cooperation and Development guidelines No. 423. Special attention was given during the first 4 h and daily thereafter for a total of 14 days. Behavioral profile, physical state changes, and other parameters such as tremors, convulsion, lethargy were noted. Clinical signs were observed daily during the 28 days of the treatment period. Body weights were measured once a week. On the 29th day, the animals were kept to overnight and blood samples were collected through retro-orbital puncture for biochemical analysis. Results: In both acute and subacute toxicity studies, the treatment with CP did not affect the normal health status of animals. It is suggestive that CP is considered practically non-toxic. Conclusion: The toxicity profile of CP seed oil was evaluated and found to be safe until 2000 mg/kg dose.


1997 ◽  
Vol 57 (4) ◽  
pp. 793-799 ◽  
Author(s):  
Mahanandeeshwar Gattu ◽  
Kenneth L Boss ◽  
Alvin V Terry ◽  
Jerry J Buccafusco

2013 ◽  
Vol 549 ◽  
pp. 163-167 ◽  
Author(s):  
Koji Nomura ◽  
Mercede Lee ◽  
Christina Banks ◽  
Graham Lee ◽  
Brian J. Morris

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