6 results on '"Kechang HUANG"'
Number of results to display per page
Search Results
2. Preparation Technology and Antioxidant Activities of Different Molecular Weight Macadamia Nut Polypeptides
- Author
-
Jiarong FU, Xiaojing HU, Shangxuan MA, Fang WANG, Gangjun GUO, Kechang HUANG, Yuexue YANG, and Xiyong HE
- Subjects
macadamia nut ,peptides ,different molecular weight ,preparation ,antioxidant activity ,Food processing and manufacture ,TP368-456 - Abstract
Macadamia nut polypeptides were prepared by enzymatic hydrolysis of macadamia nut meal, and suitable proteases for the preparation of macadamia antioxidant polypeptides were screened with ABTS+ radical scavenging effects as evaluation indicators. Four constituents (MNAP-1, MNAP-2, MNAP-3, MNAP-4) were obtained by DA201-C macroporous resin and dialysis technology. The scavenging capacity against 1,1-diphenyl-2-picrylhydrazyl radical (DPPH·), hydroxyl radical and 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulfonate radicals) radical (ABTS+·), and reducing power were investigated by comparing with glutathione as controls. The results showed that the suitable protease was complex protease for the preparation of macadamia antioxidant polypeptides, which was better than neutral protease, acid protease, alkaline protease, papain and bromelain at the same concentration. Antioxidant activities of different molecular weight macadamia nut polypeptides were different, which all had strong scavenging capacity against DPPH and ABTS+ radicals, and also had certain scavenging capacity against hydroxyl radical and reducing power. MNAP-4 (molecular weight less than 1000 Da) had the strongest scavenging capacity against DPPH, ABTS+ and hydroxyl radicals and the highest reducing power with half maximal inhibitory concentration (IC50) of 0.36, 6.75, 0.08 and 3.19 mg/mL, respectively, which was lower than other molecular weight polypeptides. Correlation analysis showed different molecular weight macadamia nut polypeptides had good correlations with their DPPH, hydroxyl and ABTS+ radicals scavenging capacity and reducing power with r values of 0.947, 0.964, 0.948 and 0.856 (P
- Published
- 2023
- Full Text
- View/download PDF
3. Sedation with a 1:1 mixture of etomidate and propofol for gastroscopy in hypertensive elderly patients
- Author
-
Yanpeng Liu, Yiping Huang, Ruoguo Wang, Yongji Zhai, Kechang Huang, and Zhanjie Ren
- Subjects
elderly ,etomidate ,gastroscopy ,hypertension ,propofol ,sedation ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract We hypothesized that the combined use of etomidate and propofol for endoscopic sedation in elderly hypertensive patients could reduce adverse reactions while providing ideal sedation. To validate our hypothesis, we conducted a prospective, randomized, controlled, double‐blinded study. A total of 360 elderly hypertensive patients scheduled for gastroscopy at our hospital were enrolled in the study, of whom 328 completed the trial. The patients were randomly assigned to one of three groups: the propofol group (group P), the etomidate group (group E), or the propofol‐etomidate combination group (mixed at a ratio of 1:1, group PE). We collected and analyzed the cardiopulmonary effects and side effects in each group. Regardless of the sedation drug used, the systolic blood pressure, mean blood pressure, and heart rate of involved patients were significantly affected. Oxygen desaturation and injection pain were more common in group P compared to groups E (33.6% vs. 14.8%, 31.8% vs. 2.7%, both P
- Published
- 2023
- Full Text
- View/download PDF
4. Short-term Load Forecasting Considering Demand Response
- Author
-
Kechang, Huang, primary and Jingjiao, Li, additional
- Published
- 2021
- Full Text
- View/download PDF
5. The Distance from Skin to Cervical and High Thoracic Epidural Space on Chinese Adults as Read from MRI
- Author
-
Jian-Xiong An, John P. Williams, Doris K. Cope, Kechang Huang, Hui Wen, Xiao-Yan Qian, Qian-Qian Zhao, and Qi-Wu Fang
- Subjects
medicine.medical_specialty ,education.field_of_study ,medicine.diagnostic_test ,business.industry ,Population ,Magnetic resonance imaging ,Epidural space ,Sagittal plane ,Anesthesiology and Pain Medicine ,medicine.anatomical_structure ,Anesthesiology ,Thoracic vertebrae ,medicine ,Nuclear medicine ,business ,Prospective cohort study ,education ,Cervical vertebrae - Abstract
Background: A few studies on the depth from the skin to the cervical epidural space (DSES) have been reported from the United States, South Korea, Japan, and Taiwan. There are no published reports from mainland China. Objectives: The goal of this study was to collect standard data on Chinese adults from mainland China in a large medical center with a wide geographical range of patients. Study Design: A prospective study. Setting: Department of Anesthesiology, Pain Medicine, and Critical Care Medicine, Aviation General Hospital of China Medical University. Methods: The survey included 410 patients. Measurements were made of DSES, the dural sac, and the spinal cord by automatic measuring ruler on transverse and sagittal images of the cervical spine at the C5-6, C6-7, C7-T1, T1-2, and T2-3 intervertebral space obtained by magnetic resonance imaging (MRI). We also obtained the width of the epidural space by measuring the distance from the (LF) to the dural sac. Results: DSES at C5-6, C6-7, C7-T1, T1-2, and T2-3, respectively, was 4.69 ± 0.84 cm, 5.14 ± 0.98 cm, 5.56 ± 1.03 cm, 5.81 ± 0.94 cm, and 5.76 ± 0.86 cm on T2W (weighted) MRIs obtained in the sagittal plane (mean ± SD). The distance at C5-6, C6-7, and C7-T1 in transverse images was 4.67 ± 0.86 cm, 5.18 ± 1.02 cm, and 5.55 ± 0.97 cm, respectively. All measured distances from the skin to the epidural space were significantly greater in men than in women. Multivariate regression analysis revealed significant partial correlation between DSES and (BMI). Limitation: Limitations include the absence of healthy individuals as well as the influence of the difference in neck positioning during the MRI examination vs. active epidural puncture. Conclusion: DSES varied with the cervical intervertebral level in those patients studied from the population of mainland China. The greatest DSES was noted at C7-T1 in men and T1-2 in women, and the least was at C5-6 in both men and women. DSES had a significant relationship with neck circumference and BMI in both genders. We suggest that the DSES be measured with MRI before performing epidural puncture. The lower cervical and upper thoracic intervertebral spaces appear to provide a greater margin of safety for epidural puncture. Key words: Cervical epidural space, magnetic resonance imaging
- Published
- 2014
- Full Text
- View/download PDF
6. The distance from skin to cervical and high thoracic epidural space on chinese adults as read from MRI
- Author
-
Qianqian, Zhao, Kechang, Huang, Jianxiong, An, Qiwu, Fang, Hui, Wen, Xiaoyan, Qian, Doris K, Cope, and John P, Williams
- Subjects
Adult ,Aged, 80 and over ,Epidural Space ,Male ,China ,Adolescent ,Pain ,Middle Aged ,Magnetic Resonance Imaging ,Thoracic Vertebrae ,Cervical Vertebrae ,Humans ,Female ,Prospective Studies ,Aged ,Skin - Abstract
A few studies on the depth from the skin to the cervical epidural space (DSES) have been reported from the United States, South Korea, Japan, and Taiwan. There are no published reports from mainland China.The goal of this study was to collect standard data on Chinese adults from mainland China in a large medical center with a wide geographical range of patients.A prospective study.Department of Anesthesiology, Pain Medicine, and Critical Care Medicine, Aviation General Hospital of China Medical University.The survey included 410 patients. Measurements were made of DSES, the dural sac, and the spinal cord by automatic measuring ruler on transverse and sagittal images of the cervical spine at the C5-6, C6-7, C7-T1, T1-2, and T2-3 intervertebral space obtained by magnetic resonance imaging (MRI). We also obtained the width of the epidural space by measuring the distance from the (LF) to the dural sac.DSES at C5-6, C6-7, C7-T1, T1-2, and T2-3, respectively, was 4.69 ± 0.84 cm, 5.14 ± 0.98 cm, 5.56 ± 1.03 cm, 5.81 ± 0.94 cm, and 5.76 ± 0.86 cm on T2W (weighted) MRIs obtained in the sagittal plane (mean ± SD). The distance at C5-6, C6-7, and C7-T1 in transverse images was 4.67 ± 0.86 cm, 5.18 ± 1.02 cm, and 5.55 ± 0.97 cm, respectively. All measured distances from the skin to the epidural space were significantly greater in men than in women. Multivariate regression analysis revealed significant partial correlation between DSES and (BMI).Limitations include the absence of healthy individuals as well as the influence of the difference in neck positioning during the MRI examination vs. active epidural puncture.DSES varied with the cervical intervertebral level in those patients studied from the population of mainland China. The greatest DSES was noted at C7-T1 in men and T1-2 in women, and the least was at C5-6 in both men and women. DSES had a significant relationship with neck circumference and BMI in both genders. We suggest that the DSES be measured with MRI before performing epidural puncture. The lower cervical and upper thoracic intervertebral spaces appear to provide a greater margin of safety for epidural puncture.
- Published
- 2014
Catalog
Books, media, physical & digital resources
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.