Proposal of Model for Curation Digital Objects of an Oncology Research Center

Author(s):  
Josiane Mello ◽  
Angel Freddy Godoy Viera
Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 4950-4950 ◽  
Author(s):  
Iraj Asvadi Kermani ◽  
Babak Hajipour ◽  
Atabak Asvadi Kermani ◽  
Naser Ahmadi Asl ◽  
Leila Roshanghar ◽  
...  

Abstract Abstract 4950 Methotrexate (MTX), a folic acid antagonist, is widely used as a treatment for malignancies as well as in the treatment of various inflammatory and autoimmune disorders. Nephrotoxicity is an important side-effect of this drug. Prevention and treatment of MTX-induced renal dysfunction are essential to prevent potentially life-threatening MTX-associated toxicities, Pentoxifylline(PTX) is an anti-inflammatory and anti-oxidant agent and we hypothesized that pentoxifylline may affords renal protection by down regulating TNF-α as well as by improving cellular anti-oxidant activity. Forty five male wistar rats were assigned to 3 groups of 15 animals each: Group 1: control group (0.9% saline). Group 2: MTX; injected with 20mg/kg MTX intra peritoneal. Group 3: MTX+PA; injected intraperitoneally (i.p.) MTX (20 mg/kg) + PTX (50mg/kg) intraperitoneally. PTX was administered since 3 days before MTX administration and continued for 6 days. After 6 days rats were anesthetized and serum sampled and renal tissue removed for biochemical and histological evaluation. Data showed that glutathione peroxidase (GPx), superoxide dismutase (SOD)activities were lower in PTX+NTX group comparing to MTX group significantly(p<0.05). Renal tissue injury index and percent of TUNEL positive cells, renal tissue malondialdehyde (MDA) levels and plasma BUN(Blood Urea Nitrogen) and creatinine (Cr) and Tumor necrosis factor- Alpha(TNF-α) levels were higher in MTX group comparing to MTX+PTX group significantly (p<0.05). In conclusions, it has been suggested that PTX may be a promising drug against MTX-induced renal damage and oxidative renal stress. Further studies are warranted to define the exact mechanism of the protecting effect of PTX on MTX-induced nephrotoxicity and the optimum dosage of this compound. In addition, these data indicate that the activities of GPX and SOD enzymes content in rat kidneys may play a role in the pathogenesis of MTX-damage. In our study, the increased level of tissue MDA and serum TNF-α level together may be suggested that the underlying mechanism is related to direct toxicity of MTX rather than blockage in folate synthesis in rat kidneys. PTX administration also attenuated renal tissue injury and number of apoptic cells and suppressed elevation of BUN and Cr levels; however, further studies are essential to elucidate the exact mechanisms of MTX-induced renal toxicity, and protection and the effect of PTX. Disclosures: Kermani: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Employment, Membership on an entity's Board of Directors or advisory committees, Research Funding. Hajipour: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding. Kermani: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding. Ahmadi Asl: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding. Roshanghar: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding. Khodadadi: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding.


Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 3662-3662
Author(s):  
Roya Dolatkhah ◽  
Manouchehr Khoshbaten ◽  
Iraj Asvadi Kermani ◽  
Zohreh Sanaat ◽  
Mohammad Reza Bonyadi ◽  
...  

Abstract Abstract 3662 Background: Upper Gastro Intestinal (UGI) Bleeding is one of the most life-threatening complications, and occurs in up to 25% of persons with Hemophilia (PWH).Recurrent bleeding is common and can be caused by the Helicobacter Pylori (H.Pylori) infection. Our aim was to evaluate the role of H.Pylori infection in UGI bleeding in PWH, using Serology and Stool antigen tests. Methods: Ninety patients with hereditary bleeding disorders, 30 patients(group A) with and 60 patients(group B) without a history of UGI bleeding, who were admitted to our Hemophilia Treatment Center, were included in the study. The prevalence of H.Pylori infection was investigated by stool antigen test, as well as serum serologic tests including IgG and anti-CagA. Results: Among 90 patients (81 men,16 women, mean age 31 ± 11 years), 66 patients with Hemophilia A,10 patients with Hemophilia B, 6 patients with VWD, and 3 patients with other factor deficiencies were evaluated for H.Pylori infection. About 46.7% of patients in group A, and 23.3% of patients in group B were anti-Cag A – positive in serum (P=0.02), while 76.7% of patients in group A and 51.7% of patients in group B had H.Pylori IgG antibodies in serum (P= 0.02). H.Pylori antigen in stool was positive in 76.7% in group A and 55% in group B (P=0.03). Gastro endoscopy was done to find the bleeding focus and further evaluations, in 19 patients with acute UGI bleeding. No statistically significant difference was found between type and severity of diseases and risk of UGI. Conclusion: There was a statistically significant differences in H.Pylori infection between patients with and without UGI bleeding history. So, H.Pylori infection should be considered as an important cause of UGI bleeding in PWH. We would recommend stool antigen test as a new and none-invasive screening test for diagnosis of H.Pylori infection in all patients with hereditary hemorrhagic disorders. Disclosures: Dolatkhah: Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Employment, Research Funding. Khoshbaten:Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding. Kermani:Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Employment, Membership on an entity's Board of Directors or advisory committees, Research Funding. Sanaat:Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Employment, Research Funding. Bonyadi:Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Employment, Research Funding. Ghojazadeh:Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Employment, Research Funding. Kermani:Hematology and Oncology Research Center, Tabriz University of Medical Sciences: Research Funding.


Author(s):  
Loraine K. Obler

The focus of this article is on the study of bilingual and multilingual adults at the Howard Goodglass Aphasia Research Center and the Language in the Aging Brain Laboratory by Drs. Obler and Albert along with former students and colleagues. Summaries of studies examining research in healthy bilingual adults, healthy monolingual older adults, and monolingual and bilingual individuals with aphasia are presented.


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