2.Effect of Tpo and/or IL-11 gene modified stromal cells on the expansion of CD34+ CD38- hematopoietic primitive progenitor cells.
Ling-ling LU ; Guang YANG ; Liang LI ; Xue-tao PEI ; Ya-de ZHOU ; Kai FENG ; Ci-xian BAI
Chinese Journal of Hematology 2003;24(11):589-592
OBJECTIVETo investigate the effects of Tpo and/or IL-11 gene modified stromal cells on the expansion of CD(34)(+) hematopoietic stem/progenitor cells in cord blood.
METHODSRetroviral vectors containing Tpo or IL-11 gene were constructed and used to transfect the stromal cell line HFCL. Tpo and/or IL-11 mRNA was assayed by Northern blot. Non-modified stromal cells were used, CD(34)(+) hematopoietic stem/progenitor cells from cord blood were expanded on gene-modified stromal cells for 7 days. The phenotype of CD(34)(+)CD(38)(-) primitive progenitors was detected by flow cytometry.
RESULTSHFCL expressed Tpo and/or IL-11 mRNA after transfected by the retroviral vectors. The percentages of CD(34)(+)CD(38)(-) primitive progenitors in the cultures of Tpo, IL-11 and Tpo + IL-11 modified HFCL were (1.8 +/- 0.24)%, (1.62 +/- 0.23)%, and (2.45 +/- 0.28)%, respectively, which were higher than that in the control [(0.8 +/- 0.23)%].
CONCLUSIONThe stromal cells modified by Tpo and/or IL-11 gene were able to enhance ex vivo expansion of CD(34)(+) and CD(34)(+)CD(38)(-) hematopoietic stem/progenitor cells from cord blood.
ADP-ribosyl Cyclase ; analysis ; ADP-ribosyl Cyclase 1 ; Antigens, CD ; analysis ; Antigens, CD34 ; analysis ; Fetal Blood ; cytology ; Hematopoietic Stem Cells ; physiology ; Humans ; Infant, Newborn ; Interleukin-11 ; genetics ; Membrane Glycoproteins ; Stromal Cells ; physiology ; Thrombopoietin ; genetics
3.Fresh amniotic membraneversus acellular amniotic membrane for repair of the tendon sheath and prevention of tendon adhesion
bo Jiang BAI ; fang Hong ZHAO ; jiao Rui GAO ; Bing ZHANG ; lun Kun YU ; tao Yan YANG ; Tao MA ; hu De TIAN
Chinese Journal of Tissue Engineering Research 2017;21(30):4842-4846
BACKGROUND: Amniotic membrane has a unique structure that can block the penetration of certain substances, to ensure normal nutrition supply for the surrounded tissues, and is also characterized by anti-adhesion, good tissue compatibility, mild inflammatory reaction, few fibers and biodegradability. OBJECTIVE: To compare the effects of fresh amniotic membrane and acellular amniotic membrane to prevent adhesion and promote tendon healing during the repair of tendon sheath defects. METHODS: Sixty healthy male leghorn chickens were selected, and the model of tendon injury and tendon sheath defects was established at the third toes. The animal models were then randomly divided into three groups and underwent repair with fresh amniotic membrane (group A), acellular amniotic membrane (group B), and no treatment in control group (group C), respectively. Histological observation and biomechanical analysis of the third toes were performed after repair. RESULTS AND CONCLUSION: (1) Histological observation. Congestive edema and inflammatory response were found in all animals at 2 weeks after repair, but mildest in the group A and severest in the group C. These inflammatory responses gradually alleviated over time in the three groups. At 12 weeks after repair, the new tendon sheath formed in all the animals, which was more mature than that at 4 weeks after repair. The synovial cells on the surface of the tendon sheath were arrayed tidily with dense structure in the groups A and B, but in the group C, the synovial cells were distributed disorderly with loose structure and prominent fibrous tissues. (2) Biomechanical analysis. Tendon sliding distance in the groups A and B was significantly larger than that in the group C at 4, 8, 12 weeks after repair (P < 0.05), but there were no significant difference in the distance between the groups A and B (P > 0.05). At 4 and 8 weeks after repair, the maximum tensile strength was largest in the group A, sequentially followed by group B and group C (P < 0.05), but there were no significant difference among the three groups at 12 weeks after repair (P > 0.05). To conclude, both fresh amniotic membrane and acellular amniotic membrane can promote tendon healing and prevent the adhesion of tendon through tendon sheath reconstruction, but the fresh amniotic membrane is preferred to promote early tendon healing compared with acellular amniotic membrane.
4.Reliability and validity of the Chinese version of The Premature Ejaculation Diagnostic Tool.
Hui JIANG ; De-feng LIU ; Chun-hua DENG ; Xue-jun SHANG ; Kai HONG ; Jun-hong DENG ; Zeng-jun WANG ; Huai YANG ; Yi-chao SHI ; Yong-han HUANG ; Pei-tao WANG ; Yan ZHANG ; Ji-hong LIANG ; Bai-hua SHEN ; Fu-biao LI ; Chun-ying ZHANG
National Journal of Andrology 2015;21(7):598-603
OBJECTIVETo translate the English version of The Premature Ejaculation Diagnostic Tool (PEDT) into Chinese, evaluate its reliability and validity, and analyze its feasibility in the diagnosis of premature ejaculation (PE).
METHODSFollowing the forward-backward translation procedure, we developed the Chinese version of PEDT, which was then revised by andrologists and bilingual linguists. We enrolled subjects with or without PE from 15 urological or andrological clinics in China and obtained the information about their demographic characteristics, PEDT scores, and intra-vaginal ejaculation latency time (IELT). We evaluated the internal consistency of PEDT using Cronbach alpha, was examined its reliability and stability by test-retest analysis, analyzed its correlation with IELT by Spearman correlation analysis, and tested its sensitivity and specificity by receiver operating characteristic ( ROC) analysis.
RESULTSTotally, 570 PE patients (aged [30.66 ± 7.11] years) and 226 non-PE men (aged [33.01 ± 5.41] years) were recruited, with the mean IELT of (1.34 ± 0.54) min in the former and (11.09 ± 7.5) min in the latter group. The Cronbach's alpha of the Chinese version of PEDT was 0.79, and the test-retest correlation coefficient was 0.75 (P < 0.01). The PEDT score was negatively correlated with IELT (Spearman's p = -0.52, P < 0.01). When the cutoff value of PE diagnosis was defined as 7.5, the sensitivity and specificity of PEDT were 0.80 and 0.78, and when as 8.5, they were 0.72 and 0.89, respectively.
CONCLUSIONThe Chinese version of PEDT was demonstrated to have good internal consistency, reliability, and validity, as well as a high predictability for PE. It can be used as a reliable and convenient tool to screen PE among Chinese men.
Adult ; Aged ; Asian Continental Ancestry Group ; China ; Ejaculation ; Feasibility Studies ; Humans ; Language ; Male ; Middle Aged ; Premature Ejaculation ; diagnosis ; ROC Curve ; Reaction Time ; Reproducibility of Results ; Sensitivity and Specificity ; Translations
5.Development and Comparison of Determination of Staphylococcus aureus in Different Processed Products of Angelicae Sinensis Radix Based on Real-time PCR Technique
Wei-Hua YAN ; Hong-hong CAO ; Shuang GUO ; De-tao BAI ; Jie CHEN ; Chun-qin MAO ; Lin LI ; Tu-lin LU
Chinese Journal of Experimental Traditional Medical Formulae 2020;26(23):137-144
Objective:To quantitatively analyze the changes of
6.Investigation of Ecological Environment of Mountain Cultivated Panax ginseng and Their Associated Plants
Lian-lian ZHU ; Yan MA ; Liang XU ; Hao-yu HU ; Bo HE ; Xiao-bo ZHANG ; Wei-min XU ; Su-tao BAI ; De-qiang DOU
Chinese Journal of Experimental Traditional Medical Formulae 2020;26(21):202-209
Objective:To investigate the ecological environment and associated plants of mountain cultivated
7.Effect of Transplanting Densities on Growth, Development, Yield and Quality of Astragalus membranaceus var. mongholicus
Bo-qiong XU ; Yuan CHEN ; Feng-xia GUO ; De-tao BAI ; Duo-xu ZHOU
Chinese Journal of Experimental Traditional Medical Formulae 2020;26(2):135-143
Objective::Astragali Radix is an important medicinal and edible herb. To achieve standardized cultivation of Astragali Radix and improve cultivation results,
8.Optimal surgical timing and treatment of thumb duplication in children.
Zhong-Wei JIA ; De-Ming BAI ; Jiang-Tao LONG ; Xue-Song GUO ; Yu TIAN ; Li-Qiang ZHANG ; Bin-Bin LIU ; Liang REN
Chinese Journal of Plastic Surgery 2013;29(5):336-340
OBJECTIVETo investigate the optimal surgical timing and treatment of congenital duplication of the thumb in children.
METHODSA clinical study was performed on 154 fingers of the 132 patients (including 85 males, 47 females;mean age (1.53 +/- 2.47) years; ranged from 2 months to 13 years). Duplicated thumbs were surgically treated from December 2007 to February 2012. All patients underwent detailed physical examination and radiological assessment. Surgical methods should be selected according to the age, Wassel classification and deformity. The operation steps included resection of the most hypoplastic thumb, followed by skin flap plasty, tendon shift (transplantation) , reconstruction of collateral ligament and articular capsule. 11 cases over the age of 6 underwent osteotomy discretion as appropriate.
RESULTSA total of 117 fingers of the 104 patients were followed up for an average 36. 7 months (range,6-55 months). We adopted upgrade Tada standard to evaluate the follow-up results as excellent in 77 thumbs, good in 21 thumbs, fair in 15 thumbs and poor in 4 thumbs. Three thumbs appeared secondary angular deformity 2 years after operation and one thumb appeared residual osteoepiphysis in the radial side of metacarpophalangeal joint 3 years after operation. The appearance and the function were almost normal after second operation.
CONCLUSIONSThe optimal surgical timing of congenital duplication of thumb should be based on the appearance of thumb ossification center. The surgical timing of Wassel type- I and II should be chosen at 1. 5 years old when the ossification center of distal phalanx appears, Wassel type-III and IV should be chosen at 1 year old when the ossification center of proximal phalanx appears, Wassel type-V and VI should be chosen at 2. 5 years old when the ossification center of metacarpal appears, and Wassel type-VII should be chosen at 2. 5 years old. The surgical method should be selected on individualized principle. The key points are reconstruction of collateral ligament, tendon and articular capsule and correction of ulnar deviation (or radial deviation).
Adolescent ; Child ; Child, Preschool ; Female ; Hand Deformities ; surgery ; Humans ; Infant ; Male ; Polydactyly ; surgery ; Reconstructive Surgical Procedures ; methods ; Thumb ; abnormalities ; surgery
9.Mechanism study of prescription to treat Xiaoke based on the property and flavor theory of Chinese medicine and network pharmacology
Jin TAO ; Min JIANG ; Lu-ying CHEN ; Yuan-yuan HOU ; De-qin ZHANG ; Feng QIU ; Gang BAI
Acta Pharmaceutica Sinica 2017;52(2):236-244
Property and flavor theory of traditional Chinese medicine (TCM) is the core base for clinical treatment of diseases. However, few research about its chemical and biological characterization was performed. In this paper, network pharmacology was adopted to review patterns around the theory of TCM. "Xiaoke" prescription database, which combinations of herb medicines for diabetes therapy, was firstly built to explore prescription regularity and screen core paired-components. The prescription regularity and molecular mechanism of flavor composition were explored through the relationship of "drug-compound-target-pathway-function" by ChEMBL, CTD and KEGG datebase. As a result, the tastes of "Gan" (sweetish taste) and "Ku" (bitter taste) were the popular therapeutic flavor to regulate the disorder of glucose and lipid metabolisms. The mechanism of Xiaoke was summarized from representative traditional Chinese medicine partner "Zhimu-Huangbai" and "Huangqi-Gegen". The key components of "Gan", including saponins stimulated insulin secretion, improve insulin resistance and promote glucose utilization. The components of "Ku", including flavonoids and alkaloids regulate inflammatory cytokines, promoted the utilization of glucose, improve endocrine and metabolism through MAPK, PI3K-Akt, PPAR signal pathway. The TCM therapeutic mechanism about "Xiaoke" was preliminarily summarized to clear "heat" by anti-inflammation and immunoregulation, to regulate glucolipid metabolism for removing the satiation of digestion, and to improve the utilization of insulin and diabetes complications for endocrine adjusting. The results demonstrate that therapeutic principle of TCM for "Xiaoke" is comprehensive via multi pathway. This study provides a new research method and strategy for exploring the mechanism of TCM for diabetes therapy.
10.Role and mechanism of histone deacetylases in mouse neuronal development.
Yu-Wei BAI ; Meng-Long GUAN ; Tao ZHENG ; Shi-Ping LI ; Yi QU ; De-Zhi MU
Chinese Journal of Contemporary Pediatrics 2021;23(3):294-299
OBJECTIVE:
To study the role and mechanism of histone deacetylase 1 (HDAC1) and histone deacetylase 2 (HDAC2) in mouse neuronal development.
METHODS:
The mice with Synapsin1-Cre recombinase were bred with
RESULTS:
The mice with
CONCLUSIONS
Deletion of
Animals
;
Blotting, Western
;
Histone Deacetylase 1/genetics*
;
Histone Deacetylase 2
;
Histone Deacetylases/genetics*
;
Immunohistochemistry
;
Mice
;
Neurons/metabolism*
;
Signal Transduction