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Articles by F Ma
Total Records ( 3 ) for F Ma
  L Zhang , X Jia , X Peng , Q Ou , Z Zhang , C Qiu , Y Yao , F Shen , H Yang , F Ma , J Wang and Z. Yuan
 

This paper presents an liquid chromatography (LC)/mass spectrometry (MS)-based metabonomic platform that combined the discovery of differential metabolites through principal component analysis (PCA) with the verification by selective multiple reaction monitoring (MRM). These methods were applied to analyze plasma samples from liver disease patients and healthy donors. LC–MS raw data (about 1000 compounds), from the plasma of liver failure patients (n = 26) and healthy controls (n = 16), were analyzed through the PCA method and a pattern recognition profile that had significant difference between liver failure patients and healthy controls (P < 0.05) was established. The profile was verified in 165 clinical subjects. The specificity and sensitivity of this model in predicting liver failure were 94.3 and 100.0%, respectively. The differential ions with m/z of 414.5, 432.0, 520.5, and 775.0 were verified to be consistent with the results from PCA by MRM mode in 40 clinical samples, and were proved not to be caused by the medicines taken by patients through rat model experiments. The compound with m/z of 520.5 was identified to be 1-Linoleoylglycerophosphocholine or 1-Linoleoylphosphatidylcholine through exact mass measurements performed using Ion Trap–Time-of-Flight MS and METLIN Metabolite Database search. In all, it was the first time to integrate metabonomic study and MRM relative quantification of differential peaks in a large number of clinical samples. Thereafter, a rat model was used to exclude drug effects on the abundance of differential ion peaks. 1-Linoleoylglycerophosphocholine or 1-Linoleoylphosphatidylcholine, a potential biomarker, was identified. The LC/MS-based metabonomic platform could be a powerful tool for the metabonomic screening of plasma biomarkers.

  S Prodanovich , R. S Kirsner , J. D Kravetz , F Ma , L Martinez and D. G. Federman
 

Objective  To examine the cardiovascular risk factors in patients with psoriasis and the association between psoriasis and coronary artery, cerebrovascular, and peripheral vascular diseases.

Design  Observational study.

Setting  Large Department of Veterans Affairs hospital.

Patients  The study included 3236 patients with psoriasis and 2500 patients without psoriasis (controls).

Main Outcome Measures  Using International Classification of Diseases, Ninth Revision, Clinical Modification, codes, we compared the prevalence of traditional cardiovascular risk factors and other vascular diseases as well as mortality between patients with psoriasis and controls.

Results  Similar to previous studies, we found a higher prevalence of diabetes mellitus, hypertension, dyslipidemia, and smoking in patients with psoriasis. After controlling for these variables, we found a higher prevalence not only of ischemic heart disease (odds ratio [OR], 1.78; 95% confidence interval [CI], 1.51-2.11) but also of cerebrovascular (OR, 1.70; 95% CI, 1.33-2.17) and peripheral vascular (OR, 1.98; 95% CI, 1.32-2.82) diseases in patients with psoriasis compared with controls. Psoriasis was also found to be an independent risk factor for mortality (OR, 1.86; 95% CI, 1.56-2.21).

Conclusions  Psoriasis is associated with atherosclerosis. This association applies to coronary artery, cerebrovascular, and peripheral vascular diseases and results in increased mortality.

  S Hu , Y Parmet , G Allen , D. F Parker , F Ma , P Rouhani and R. S. Kirsner
 

Objective  To examine and compare the temporal trends in melanoma incidence and stage at diagnosis among whites, Hispanics, and blacks in Florida from 1990 to 2004.

Design  Cross-sectional and retrospective analysis.

Setting  Florida Cancer Data System.

Patients  Melanoma cases with known stage and race/ethnicity reported from 1990 to 2004.

Main Outcome Measures  Age-adjusted melanoma incidence and stage at diagnosis.

Results  Of 41 072 cases of melanoma, 39 670 cases were reported for white non-Hispanics (WNHs), 1148 for white Hispanics (WHs), and 254 for blacks. Melanoma incidence rates increased by 3.0% per year among WNH men (P < .001), 3.6% among WNH women (P < .001), 3.4% among WH women (P = .01), and 0.9% among WH men (P = .52), while remaining relatively stable among black men and women. Both WHs and blacks had significantly more advanced melanoma at presentation: 18% of WH and 26% of black patients had either regional or distant-stage melanoma at diagnosis compared with 12% of WNH patients. The proportion of distant-stage melanoma diagnosed among WHs and blacks changed little from 1990 to 2004, compared with a steady decrease in the percentage of melanoma cases diagnosed at distant stage among WNHs (P < .001). Such differences in the time trends of the proportion of distant-stage melanoma remained after excluding in situ cases.

Conclusions  The rising melanoma incidence among WNHs and WHs emphasizes the need for primary prevention. The persistence of disparity in melanoma stage at diagnosis among WHs, blacks, and WNHs warrants closer examination of secondary prevention efforts in minority groups.

 
 
 
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