Objective:To observe the ultrastructure of biological living skin equivalent in vitro.Methods:Keratinocytes and fibroblasts were sourced from the back skin of legally aborted human foetus.Fibroblasts were seeded into bovine type I collagen gel and cultured for 3 days.Keratinocytes were seeded on the surface of collagen gel and cultured for another 2 days,then the equivalent skin was exposed to air-liquid interface to form a protective cornified layer.Histological structure and ultrastructure of the equivalent skin were observed by light microscope and transmission electron microscope.Results:The morphogy of equivalent skin of full thickness consisted of epithlium and dermis.Epithelium was made up of stratum basale,stratum spinosum,stratum granulosum and stratum corneum.lntercellular bridge existed within the cells of different layers.Some ultrastructures in epithelium such as desmosome,Lamelle,tonofibrils and lipid droplet were found in the equivalent skin.Conclusion:Tissue-engineered skin may have the features of natural skin.

To clarify the origin and development of the traditional Chinese medicine "Duhuo" and "Qianghuo" with medicinal literatures. Medical literatures of past dynasties were analysed and combined with the modern material. The "Duhuo" in Herbal writing Shen Nong Ben Cao Jing include traditional Chinese medicine "Duhuo" and "Qianghuo", "Qianghuo" was separated from "Duhuo" due to the distinguish of clinical application. The origin of "Qianghuo" is Notopterygium incisum and N. forbesii, However, The origin of "Duhuo" is very complex, Angelica pubescens f. biserrata as authentic "Duhuo" was used from Song Dynasty. "Qianghuo" was originated from "Duhuo".
Angelica ; chemistry ; growth & development ; Apiaceae ; chemistry ; growth & development ; China ; Drugs, Chinese Herbal ; isolation & purification ; Geography ; Humans ; Medicine, Chinese Traditional ; Research ; Species Specificity

Through the investigation of Phellodendron Cortex on the market, and 28 batches of samples were collected. By using spectrophotometer the color values of outer surface, inner surface and cross - section of these samples were measured. These measured color data was translated into 3D structure diagram by using the Lab color space tool. The level difference value, the mean value and the threshold value were calculated based the measured color data of these different batches of samples. All 28 groups measured data was analyzed using the methods of Ward linkage and average Euclidean distance. At the same time, we invited Professor Jin Shiyuan, the "Chinese medicine master", to identify, quality-evaluate and grade these 28 batches of Phellodendron Cortex samples base on the traditional experience, then compared the traditional empirical results with the spectrophotometer measurement results. The result showed that, the Phellodendron Cortex could be divided into Phellodendri Amurensis Cortex and Phellodendri Chinensis Cortex by color numerical clustering, and classified according to quality. The classification result has a high degree of consistency with the traditional experience.
China ; Color ; Herbal Medicine ; economics ; Phellodendron ; chemistry ; classification ; Plants, Medicinal ; chemistry ; classification ; Quality Control ; Spectrophotometry

Animals ; Arsenic ; toxicity ; Comet Assay ; DNA Damage ; drug effects ; Lymphocytes ; drug effects ; metabolism ; Male ; Malondialdehyde ; metabolism ; Rats ; Rats, Wistar ; Tobacco Smoke Pollution ; adverse effects

Objective To isolate and culture sweat gland epithelial cells in vitro,and to study the effects of acetylcholine (ACh) on intracellular flee calcium concentration ([Ca~(2+)]i) of cultured sweat gland epithelial cells.Methods Sweat glands epithelial cells were collected by enzymatic digestion.After ACh was added to the primary and first passage cells,[Ca~(2+)]i was examined using confocal laser scanning microscopy (CLSM) and the Ca~(2+) sensitive dye Fura 3/AM.Results The primary and first passage epithe- lial cells grew well.After ACh was added,opening of the calcium channel and significant [Ca~(2+)]i increase were observed when the primary and first passage cells were incubated with high concentration of calcium (2 mmol/L);no significant [Ca~(2+)]i increase was observed in those cultured without calcium.Conclusion Upon stimulation with ACh,calcium channels of cultured primary and first passage sweat gland epithelial cells would open,influx of extracellular Ca~(2+) occurred,which resulted in an increase of [Ca~(2+)]i.Extracellular bound calcium was therefore converted into intracellular free calcium.

Objective To investigate the value of diffusion weighted magnetie resonance imaging and apparent diffusion coefficient (ADC) value in the diagnosis of pancreatic cancer.MethodsThe clinical data of 36 patients with pancreatie cancer who were admitted to the Wuxi No.2 People's Hospital from March 2009 to June 2011 were retrospectively analyzed,and the clinical data of 30 healthy volunteers were collected.All candidates received diffusion weighted magnetie resonance imaging examination.The signal intensity ratios ( SIRs ) of the cancer and the pericancerous tissues in the T1 weighted-images (T1WI),T2 weighted-images (T2WI)and diffusion weighted-images (DWI) were compared by using one-way analysis of variance.The ADC values of the cancer and the paricancerous tissues were compared using the paired t test.The differences of the ADC values of the cancer and pericancerous tissues compared with those of healthy individuals were analyzed using an independent sample t test.ResultsThe accuracy rate of preoperative magnetic resonance imaging examination was 92％.The relative SIRs were 0.203 ± 0.190 in the T2 WI,0.399 ± 0.201 in the T1 WI and 0.579 ± 0.291 in the DWI,respectively,with no significant differences across the 3 kinds of images (F=5.92,6.15,6.83,P ＜ 0.05 ),while SIRs of the T1 WI and DWI were significantly higher than that of the T2 WI ( P ＜ 0.05 ).There was no significant difference in SIRs when comparing T1 WI and DWI ( P ＞ 0.05 ).The mean ADC values of the cancer and pericancerous tissues of the pancreatic cancer patients and the pancreatic tissues of healthy individuals were (1.40±0.24) ×10 3 mm2/s,(1.71 ±0.10) ×10-3 mm2/s and (1.73±0.30) ×10-3 mm2/s,respectively,with significant differences across the 3 modes of images (t =10.54,12.08,P ＜ 0.05).ConclusionDWI can show high quality images of the lesions,and ADC value is helpful in the diagnosis of pancreatic cancer.

Objective To explore the effects of transcranial magnetic stimulation (TMS) on motor function in patients with Parkinson's disease (PD) using meta-analysis. Methods Eight comparative studies of the effects of TMS were meta-analyzed. Results The combined studies confirmed a significant difference before and after TMS treatment. Between the experimental and control groups the effect was also highly significant. Conclusion TMS may play an active role in the rehabilitation of motor function for patients with Parkinson's disease.

Migrant workers incur the challenges of linkage and compatibility of medical insurance systems for their migration across regions and change of identities. To identify a medical insurance system adaptable to their needs, the paper recommends the following: Take their medical insurance into the national account of medical insurance; build a linkage mechanism between cities and villages, and that between cities as well; make the medical insurance system more compatible and portable, in order to safeguard their right of health.

Objective To study curative efficacy of dezocine in treatment of receiving laparoscopic appendectomy and its effects on white blood cell count and c reactive protein.Methods 90 patients of laparoscopic appendectomy who received therapy from January 2015 to October 2016 in our hospital were selected as research objects,according to random number table,those patients were divided into the observation group and the control group,45 cases in each group.The control group was treated with sufentanil, while the observation group was treated with dezocine.Then operation index, T0 (preoperative),T1(extubation),T2(after extubation) mean arterial pressure(MAP),heart rate(HR), respiration rate(RR),isual analogue scale/score ( VAS) , ramsay score ( RSS) , white blood cell count and c reactive protein of two groups after treatment were compared .Results After treatment, MAP,HR in the observation group were significantly lower than control group [(78.30 ±6.20)mmHg vs.(86.08 ±6.09)mmHg,(76.45 ±5.90)mmHg vs.(80.48 ±5.80)mmHg,(90.82 ±9.50)time/min vs.(96.73 ±9.83)time /min,(87.21 ±8.15)time /min vs.(93.59 ±9.90)time /min](P<0.05); VAS, RSS score were significantly lower than the control group[(2.60 ±0.70)score vs.(5.29 ±0.83)score,(3.53 ±0.92)score vs.(6.38 ± 1.21)score](P<0.05); White blood cell count, c reactive protein were significantly lower than the control group[(7.92 ±2.01) ×109/L vs.(14.98 ±2.11) ×109/L,(7.90 ±2.30)mg/L vs(12.46 ±3.10)mg/L](P<0.05).Conclusion Dezocine is well for receiving laparoscopic appendectomy, obvious analgesic effect, can significantly reduce the white blood cell count and c reactive protein.

?Objective :To construct human skin with full thickness in vitro using tissue engineering techniques. Metheods: Epithelial cells and fibroblasts were isolated from the back skin of legally aborted human foetus. Fibroblasts were seeded into bovine type I collagen gel and cultured for 3 days. Epithelial cells were seeded on the surface of collagen gel and cultured for another 2 days, then the equivalent skin was exposed to air liquid interface to generate a protective cornified layer. 5 days later, equivalent skin was excised and observed under light microscope and transmission electron microscope. Results: Epithelium and dermis were observed in the equivalent skin,similar to those in normal human skin. Epithelium was made up of stratum basale, stratum spinosum, stratum granulosum and stratum corneum. The cells of different layers were connected with intercellular bridge. Horny pearl were also found in epithelium. Basement member was observed between epithelium and dermis. Epithelial spikes bristles of different length were existed in partial dermis. The results of TEM observation showed that desmosome existed between cells of different layer in epithelium. Conclusion: Human skin with full thickness can be tissue engineered with foetus back skin as the sources of epithelial cells and fibroblasts, and bovine I type collagen as carrier.