Objective To investigate the insulin sensitivity in children born small for gestational age without catch-up growth.Methods We investigated 439 outpatients in pediatric department of the Third Hospital of Peking University with diagnosis of short stature from August 2008 to August 2016.Two groups were divided based on their diagnosis as born small for gestational age group(SGA)with 218 patients and idiopathic short stature group(ISS)with 221 patients.Fasting blood-glucose,fasting insulin,fasting insulin/fasting blood-glucose,islet beta-cell function(HOMA%),homeostasis model assessment-insulin resistance(HOMA-IR)were analyzed in two groups.Results Hierarchy based on age and sex in SGA and ISS.No significant difference was observed in preadolescent boys with fasting blood-glucose(4.7±0.6 vs 4.8±0.6,P=0.678),fasting insulin(5.1±4.0 vs 4.3±4.7,P=0.345),fasting insulin/fasting blood-glucose,HOMA%,HOMA-IR.No significant difference was observed in preadolescent girls with fasting blood-glucose(4.5±0.5 vs 4.6±0.5,P=0.828),fasting insulin(4.7±3.5 vs 4.5±3.3,P=0.603),fasting insulin/fasting blood-glucose,HOMA%,HOMA-IR.No significant difference was observed in adolescent boys with fasting insulin(5.9±4.3 vs 6.0±4.5,P=0.958),fasting blood-glucose(5.0±0.8 vs 4.9±0.5,P=0.176),fasting insulin/fasting blood-glucose,HOMA%,HOMA-IR.No significant difference was observed in adolescent girls with fasting blood-glucose(4.9±0.6 vs 4.8±0.4,P=0.141),fasting insulin(7.5±6.4 vs 7.4±8.6,P=0.448),fasting insulin/fasting blood-glucose,HOMA%,HOMA-IR.Conclusion The insulin sensitivity were in good condition in children born small for gestational age without catch-up growth.

In this experiment, primary mixed culture cells of lung and liver derived from new born mouse was made use of target cells, 0.1 ?Ci 3~H-TdR per milliliter medium was added in the culture in order to induce malignant transformation of the cells in the culture. Results of the experiment was that the cells effected by 3~H-TdR had a unlimited growing and formed sarcoma after being inoculated into new born mice immunosuppressed with ATS. It suggested that they had became malignant transformation cells. Results of analysis of chromosome aberrations of the transformed cells, the long arm chromosome was observed in 5% of cells, the metacentric chromosome in 7% of cells, the acentric fregment in 8% of cells. It shows that DNA damage of the cells induced by 3~H-TdR causes their chromosome aberrations and, futhermore, development of malignant cells. The fact that unstable aberrations was Still in sight in the malignant transformation cells suggested that there have been a bit of 3~HTdR left in these cells which kept damaging DNA of the cells.

Animals ; Diabetic Neuropathies ; drug therapy ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Nerve Growth Factors ; drug effects ; Nerve Regeneration ; drug effects ; Peripheral Nervous System Diseases ; drug therapy ; Phytotherapy ; Schwann Cells ; drug effects

BACKGROUND:Bone marrow mesenchymal stem cells are rare in vivo. It is important to purify, proliferate and differentiate bone marrow mesenchymal stem cells in vitro for further research. OBJECTIVE:To evaluate the biological characteristics, phenotype and multiple differentiation potential cultivation of bone marrow mesenchymal stem cells that are isolated, cultured and purified using the whole bone marrow adherence method. METHODS:Bone marrow mesenchymal stem cells were isolated, purified and cultured by the whole bone marrow adherence method. Morphological observation and flow cytometry determination of cellsurface markers were performed. Osteogenic and adipogenic differentiation of bone marrow mesenchymal stem cells was induced. RESULTS AND CONCLUSION:We successful y purified and proliferated bone marrow mesenchymal stem cells with high cellviability and differentiation ability. Fibroblast-like cells were harvested, expressing CD29 and CD90, but not CD45. Fol owing osteogenic and adipogenic induction, cells were positive for oil red O staining and alizarin red staining. The whole bone marrow adherence method is easy to operate, has little impact on cellviability, and can be used to harvest high-purification bone marrow mesenchymal stem cells with high cellviability and differentiation ability.

Objective To investigate the pathological changes and pathogenesis of the MELAS syndrome (mitochondrial encephalopathy lactic acidosis strok-like episodes ) by using the method of immunohistochemical staining in the brain biopsy specimens with anti-mitochondrial antibody (AMA).Methods We performed immunohistochemical staining in 3 confirmed MELAS patients' paraffin-imbed brain biopsy specimens.Results Small vessel proliferation and the uneven thickness of the wall were found in the 3 MELAS patients.A lot of brown deposits was shown in the wall of small vessels and also noted in neurons.Conclusions The main pathological change in the MELAS brain biopsy immunohistochemical staining with AMA was the small vessel proliferation,indicating that abnormal mitochondria accumulated in the vascular smooth muscle,endothelial cell and neurons of the lesion sites.This finding was consistent with the electron microscopic discovery and valuable for the diagnosis of MELAS.

BACKGROUND:Bone marrow mesenchymal stem cel s from chickens are important cel models for embryonic developmental biology, immunology and oncology research. However, it is difficult to keep bone marrow mesenchymal stem cel s with good undifferentiated potential in a large-scale expansion system.
OBJECTIVE:To establish a culture system in vitro with laminin coating to expand bone marrow mesenchymal stem cel s from chickens.
METHODS:Isolated bone marrow mesenchymal stem cel s from chickens were seeded in laminin-coated plates and traditional two-dimensional plates, respectively. After expansion in vitro, the morphological characteristics, expression of surface markers, expansion characteristics and adipogenic differentiation of bone marrow mesenchymal stem cel s in both conditions were analyzed and compared.
RESULTS AND CONCLUSION:There were no statistical differences in the morphological characteristics and expression of surface markers of bone marrow mesenchymal stem cel s expanded by laminin-coated plates and traditional two-dimensional plates. But, the expansion characteristics and adipogenic differentiation of bone marrow mesenchymal stem cel s cultured in laminin-coated plates were better than those in traditional two-dimensional plates. Laminin culture system could quickly amplify out of a large number of chicken bone marrow mesenchymal stem cel s with better proliferation ability and undifferentiated performance. Al above results indicated that a more efficient expansion system with laminin coating is established.

OBJECTIVE:To provide reference for development and application of Korean medicine Atractylodes japonica. METHODS:Using"Guancangsu""Huaxue chengfen""Yaoli zuoyong""Atractylodes japonica""Chemical constituents""Pharmacological effects"as Chinese and English key words,relevant literatures published during 1983-2017 were retrieved from CNKI, PubMed, ScienceDirect full-text database, the chemical constituents and pharmacological effects of A. japonica were reviewed. RESULTS & CONCLUSIONS:As of June 21,2017,a total of 226 literatures were collected,including 43 valid literatures. A. japonica mainly contains terpenoids,aliphatic,aromatic in volatile oil,glycosides active constituents in roots,and shows anti-inflammatory and analgesic,cardio cerebral vascular protection,contianaphylaxis,antibacterial,antiviral and anti-ulcer effects. Currently,the research of A. japonica on the chemical constituents and pharmacological effects has achieved initial results, however, reports of its toxicity are rare. Therefore, the safety evaluation should be taken into account in the study of its pharmacological effects.

ObjectiveTo approach the taxonomy of polymer hydrogels prepared with composite material science methods.MethodsThe research results which have been obtained were synthesized and analysed in the light of multiscale design viewpoint,and the hydrogel composite materials were classified by the composite ways and its structural levels.Results and ConclusionA kind of taxonomy system was advanced in which new concepts of intermolecular composite,textural composite etc.were induced.Apply-ing these concepts and methods will be helpful to research on composite biomaterials.

OBJECTIVETo analyze the Chinese medicine (CM) syndrome pattern of patients with type 2 diabetes mellitus (DM2) and the relationship of CM patterns with the different blood glucose levels controlled and the incidences of diabetic chronic complications.

METHODSCM syndromes in 557 DM2 patients were sorted into 7 patterns, A: the Fei-Wei yin-deficiency with exuberant heat pattern; B: the Pi-qi deficiency pattern; C: the Shen-qi deficiency pattern; D: the Pi-Shen qi-deficiency pattern; E: the Gan-Shen yin-deficiency pattern; F: the both qi-yin deficiency pattern; and G: the both yin-yang deficiency pattern, the concurrent or accompanied excessive syndromes were not taken as the indication for sorting. The blood glucose level, duration of illness and incidence of diabetic chronic complications in patients of different patterns were compared.

RESULTSThe CM syndrome patterns commonly encountered in mostly of the 557 patients was pattern F (in 264 patients, accounting for 47.4%); the next was pattern C (95 patients, 17.1%) and E (92 patients, 16.5%). The concurrent syndromes appeared in most patients was blood stasis (501 patients, 89.9%), Gan-qi stagnation was the second (225 patients, 40.4%), and the portion of damp-heat syndrome was also rather large (180 patients, 32.3%). The duration of diabetes mellitus for patients with various patterns was significantly different (P < 0.01), the longest appeared in patients of pattern G, followed by pattern D, C, F, and E in sequence, and patients of pattern A and B had a rather shorter duration. Level of fasting blood glucose was rather higher in patients of pattern A, C, D, F, and G than in those of pattern B and E. Level of glycosylated hemoglobin in patients of pattern G was the highest and in pattern A the second, while in pattern B and E was rather lower. Incidences of diabetic chronic complications, including diabetic peripheral neuropathy, diabetic retinopathy, diabetic nephropathy, cerebral infarction, and atherosclerosis in patients of pattern A and B were lower than in those of other 5 patterns (P < 0.05); but the highest incidence of multiple chronic complications revealed in pattern D and G, and that of coronary heart disease revealed in pattern C and G, all showed significant different as compared with other patterns (P < 0.01).

CONCLUSIONThe most commonly encountered CM syndrome patterns in DM2 patients of early stage are pattern A and B; and those of middle stage are pattern C, D, E and F, various diabetic chronic complications may reveal in this stage; pattern G could be found in patients accompanied with multiple chronic complications and with uncontrolled blood glucose for a long time.

Adult ; Aged ; Aged, 80 and over ; China ; Diabetes Complications ; epidemiology ; Diabetes Mellitus, Type 2 ; classification ; diagnosis ; Diagnosis, Differential ; Female ; Humans ; Incidence ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Qi ; Yin Deficiency ; Young Adult

Lagerstroemia speciosa Pers,also known as banaba,belongs to Lythraceae and contains ursolic acid,corosolic ac?id,asiatic acid and 30 other kinds of effective components.It has multiple pharmacological activities,including hypoglycemic,hypo?lipidemic,anti-oxidant and anti-viral activities,and is mainly used for the treatment of obesity and diabetes in folk medcine.This re?view summarizes the recent advances in chemical composition and pharmacological effects of L.speciosa Pers,so as to provide the theo?retical basis and reference for its further research and application.