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Articles by Li-Ping Wang
Total Records ( 2 ) for Li-Ping Wang
  Li-Ping Wang , Phillip A. Jackson , Xin Lu , Yuan-Hong Fan , John W. Foreman , Xue-Kuan Chen , Hai-Hua Deng , Cheng Fu , Li Ma and Karen S. Aitken
  Saccharum spontaneum L. has contributed important traits to modern sugarcane (S. spp. L.) cultivars such as adaptation to environmental stress and ratooning ability. There is interest in further use of S. spontaneum in sugarcane improvement for sugar or energy-from-biomass production systems. In this study, parents and progeny from 43 biparental crosses between sugarcane and S. spontaneum clones were evaluated in field trials in China and Australia, along with several commercial cultivars. The S. spontaneum clones were from diverse geographic origins in China. Measurements were made on biomass composition (% dry matter, brix and pol in juice and cane, purity, fiber content) and yield components. Moderate to high (>0.7) broad-sense heritabilities and high genetic variances were observed for most traits. About half the total genetic variance was retained as among-family variance for the biomass composition traits, but this proportion was generally <25% for biomass yields. Midparent values in an independent trial predicted biomass composition traits reasonably well (generally, r > 0.6), but less so for cane and biomass yield (0 < r < 0.4). Genetic correlations between performance of families evaluated in different countries were strong, providing preliminary evidence that results in one country could be used for identifying elite families in the other. Strategies for efficient development and selection of elite clones from S. spontaneum are suggested.
  Peng Wang , Teng-Fei Long , Li-Ping Wang and Jie Song
  Background and Objective: Epidemiological studies have shown admiring protective roles of phytochemicals on peripheral nervous system, while the prevalent use of hypotensive drugs directly impacts normal functioning of the nervous system. Hence, the present study was assessed the synergistic role of Asiatic Acid (AA) and Madecassic Acid (MA) against the antioxidant deficit induced by the metoprolol tartrate. Materials and Methods: Wistar male rats (150 mg kg1) were divided into 4 groups. Group 1 as control with no treatment, group 2 rats with metoprolol tartrate (150 mg kg1/day, orally), group 3 rats pre-treated with AA (50 mg kg1, IP) and MA (30 mg kg1, IP) for 2 weeks prior to metoprolol tartrate and group 4 with AA and MA combined as drug control for 28 days. Blood pressure (BP), heart rate (HR) and other antioxidant parameters were monitored and the blood samples were collected for endocrine and biochemistry analysis. Results: Metoprolol administration demonstrated a significant reduction in body weight, systolic BP, heart rate and food intake, while the levels of lipid peroxidation was increased significantly compared to control rats. Also, a significant decrease (p<0.01) in the antioxidant levels such as; SOD, catalase, glutathione peroxidase, reduced glutathione were evidenced in metoprolol group. On the other hand, the neuronal markers enzyme acetylcholinesterase were reduced while the activity of Nitric Oxide Synthase (NOS), Cytochrome P450 Reductase (CPR) and Carbonic anhydrase were increased in metoprolol group compared to control. However, rats received AA and MA pre-treatment elicited the improved antioxidant enzymes with restored physiological parameters, food intake and reduced the marker enzymes activity. Conclusion: The results of present study demonstrated the protective role of AA and MA against antioxidant deficit induced by the metoprolol tartrate by improving the physiological functions.
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