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- 저자 : Peter D. Chang (검색결과 2 건)
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Lee, D.N.,Chang, W.F.,Yu, I.T.,Chiou, Peter W.S.,Weng, C.F. Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.4
This study attempted to determine effects of recombinant porcine epidermal growth factor (pEGF) and glutamine (Gln) supplement on the growth performance and intestinal development of piglets weaned at 14 days of age. A total of ninety-six piglets were allotted to one of four dietary treatments which comprised inclusion of 1.0 mg pEGF supernatant/kg diet or 0.5% Gln both alone and in combination. Each treatment consisted of four replicates with six pigs per pen for a 28 days experimental period. Two pigs per replicate were sacrificed and gastrointestinal tract samples were collected on day 14. Data showed that dietary treatment failed to promote growth performance. On day 14, diets supplemented with pEGF elevated pancreatic chymotrypsin, jejunal alkaline phosphatase, sucrase, lactase and maltase activities (p<0.05), but failed to alter the small intestinal villus morphology, DNA, or protein content of gastrointestinal mucosa. Diets supplemented with Gln increased pancreatic chymotrypsin activity, tended to enhance the protein contents of gastric (p = 0.08) and jejunal mucosa (p = 0.09) but did not influence the serum IgA level or the enzyme activity in the gastrointestinal tract. On day 28, the diets supplemented with Gln increasedt (p<0.05) serum IgA and the proliferation of peripheral blood mononuclear cells by PHA stimulation. However, a combination of pEGF and Gln did not have a synergistic effect on these biomarkers in early-weaned piglets. The results demonstrate that diets supplemented with recombinant pEGF supernatant indeed improve intestinal digestive enzyme activity and diets supplemented with Gln increases the immune response in early-weaned piglets.
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Jun Mo Kim,Sukhyung Kang,Steve Sungwon Cho,Peter D. Chang,Jinseo Yang,Jin Pyeong Jeon,Hyuk Jai Choi 대한신경손상학회 2022 Korean Journal of Neurotrauma Vol.18 No.2
Objective: We present how to perform radiofrequency sensory stimulation (RFSS) and whether RFSS could be helpful in identifying symptomatic injured roots in multilevel lumbar stenosis. Methods: Consecutive patients who underwent RFSS from 2010 to 2012 were enrolled. To identify pathologic lesions, RFSS was performed for suspicious roots, as determined using lumbar magnetic resonance imaging (MRI). The RFSS procedure resembled transforaminal root block. During RFSS of the suspicious root, patients could indicate whether stimulation induced their usual pain and/or sensory changes and could indicate whether the same leg area was affected. The number of possible symptomatic roots on MRI was evaluated before and after RFSS. Based on the RFSS results, we confirmed the presence of symptomatic nerve root(s) and performed surgical decompression. Surgical results, such as numeric rating scale (NRS) scores for low back pain (LBP) and leg pain (LP), and Oswestry disability index (ODI), were evaluated. Results: Ten patients were enrolled in the study. Their mean age was 70.1±9.7 years. Clinically, NRS-LBP, NRS-LP, and ODI before surgery were 5.1%, 7.5%, and 53.2%, respectively. The mean number of suspicious roots was 2.6±0.8. After RFSS, the mean number of symptomatic roots was 1.6±1.0. On average, 1.4 lumbar segments were decompressed. The follow-up period was 35.3±12.8 months. At the last follow-up, NRS-LBP, NRS-LP, and ODI were 3.1%, 1.5%, and 35.3%, respectively. There was no recurrence or need for further surgical treatment for lumbar stenosis. Conclusion: RFSS is a potentially helpful diagnostic tool for verifying and localizing symptomatic injured root lesions, particularly in patients with multilevel spinal stenosis.
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