Objective To study the effects of Fructus ligustri lucidi and its monomers, tyrosol and oleanotic acid, on the migration of mouse melanoblast cell line (NCCmelb4M5). Methods Cultured NCCmelb4M5 cells were treated with Fructus ligustri lucidi (0.0625, 0.125, 0.25, 0.5, 2 mg/mL), tyrosol (0.02, 0.04, 0.08, 0.16, 0.8 mg/mL) and oleanolic acid (0.0625, 0.125, 0.25, 0.5, 2.5 mg/mL), respectively,for 48 hours followed by the detection of cell proliferation with MTT assay. The working concentration of the three drugs was determined according to the results of MTT assay. Scratch and transwell assays were performed to observe the effect of Fructus ligustri lucidi and its monomers at working concentration on the migration of NCCmelb4M5 cells. Results Based on the results of MTT assay, the working concentration of Fructus ligustri lucidi, tyrosol and oleanolic acid was determined at 0.125 mg/mL, 0.08 mg/mL and 0.0625 mg/mL respectively, and at these concentrations, these drugs exhibited a cytotoxity lower than that of absolute alcohol with no obvious stimulation of cell proliferation. Scratch and transwell assay revealed a promoting effect of both Fructus ligustri lucidi and tyrosol on melanoblast migration (P<0.05), while oleanolic acid had little effect on melanoblast migration. Conclusions The extract of Fructus ligustri lucidi has a significant stimulatory effect on the migration of mouse melanoblasts, and tyrosol may be an active component of Fructus ligustri lucidi associated with confirmative effect on migration of mouse melanoblasts.

Objective To compare the timeliness, success and mortality rates between the modified carotid artery puncture method ( MCAPM) and standard suture method ( SSM) in the establishment of rat model of a middle cerebral ar?tery occlusion ( MCAO) . Methods Thirty?two male rats were randomly and equally assigned into MCAPM group and SSM group. The MCAO models were established by inserting a thread into the common carotid artery ( CCA) . 24 h after modeling, the rats of the two groups were evaluated with Bederson neurological scores, and the modeling success rate and mortality rate were analyzed. Results The suture insertion times, success rates and mortality rates of the MCAPM vs. SSM groups were (82?3 ±17?4) s versus (164?6 ± 22?0) s (P<0?01), 87?5% versus 68?75% (P>0?05), and 6?25% versus 18?75% (P>0?05). Conclusions MCAPM can be used to establish the rat model of MCAO due to its simplicity, mild wound and feasibility.

Objective To objectively evaluate the endpoint ot transcatheter arterial chemoembolization (TACE) using two dimensional color-coded digital subtraction angiography (2D-ccDSA).Methods Retrospective analysis of twenty-four patients diagnosed with hepatocellular carcinoma (HCC),treated by TACE and evaluated by post-processed 2D-ccDSA.All patients were examined by DSA before and after TACE procedure,all these DSA series were converted into color-code images,the time density curve (TDC) was derived from the 2D-ccDSA imaging.Time-to-peak (TTP) was measured for the ostia of the catheter,the origin of the tumor feeding artery (TFA) and the embolized site of the TFA; maximal TDC enhancement was measured for selected spots of the tumor parenchyma.The tumor blood supply time (TBST) for pre and post-TACE was calculated accordingly.Data were interpreted with paired t test using SPSS.Results The TTP of the ostia of the catheter and the origin of the tumor feeding artery (TFA) before TACE were (3.47 ± 0.96) and (4.09 ± 1.09) s,after the TACE were (3.49 ± 1.02) and (3.78 ± 1.05) s,respectively.There was no statistical difference between the pre-and post-procedural TTP of the two landmarks (t values were 0.10 and 1.15,P values were 0.92 and 0.26).TTP at the embolized site of the main TFA were [(4.62± 1.16) and (5.59± 1.57)s]for pre and post-TACE,the tumor blood supply time (TBST) was greatly delayed compared with that after the TACE procedure [(1.82± 1.10)s and (0.52±0.41)s].The mean maximal TDC enhancements of the tumor parenchyma areas were (3.03±0.88)units before TACE and (1.10±0.67)units after TACE.The differences were all statistically significant (t values were 3.32,6.04 and 8.93,respectively,P＜0.01) Conclusion It is feasible to use 2D-ccDSA to objectively assess the endpoint of TACE procedures.

Objective To analyze features of the lateral leg peroneal artery perforator free flap,and study the clinical application of free peroneal artery perforator flap transplantation for repairing forefoot defects.Methods Retrospectively analyzed 9 patients with forefoot defects which had been repaired with free lateral leg peroneal artery perforator flap transplantation.In this group,the skin and soft tissue defects size were 4.5 cm ×4.0 cm-13.5 cm × 6.5 cm,Focused on analyzing the features of forefoot skin and soft tissue defects,the design and harvesting of lateral leg peroneal artery perforator flap,and vascular anastomosis and vessel matching,meanwhile,follow-up the survival condition and appearance of the flap,the function of foot and ankle after operation.Results In the 9 cases,the larger myocutaneous perforator arising from peroneal artery,accompanying 2 vena comitans,were found slightly above the midpoint of the line between fibula head and lateral malleolus in lateral leg.The flaps transfered to repair forefoot defects,artery end-end anastomosis:in 5 cases cutaneous branch of peroneal artery to dorsal artery of foot,in 4 cases by cutaneous branch of peroneal artery to dorsal metatarsal artery;vein end-end anastomosis:in 1 case 2 accompanying veins of peroneal artery cutaneous branch to 2 accompanying veins of dorsal artery of foot,in 5 cases 1 accompanying vein of peroneal artery cutaneous branch to 1 accompanying vein of dorsal artery of foot or metatarsal,in 3 cases 1 accompanying vein of peroneal artery cutaneous branch to 1 accompanying vein of dorsal artery of foot or metatarsal,simultaneously,the another accompanying vein of peroneal artery cutaneous branch to 1 dorsal superficial vein of the foot.All the 9 flaps survived,and no vessel articulo happened.The venous return of flaps had no significant difference between repairing 1 vein and 2 veins in gross appearance.All wounds healed in one-period.Followed-up 2-6 months postoperative,1 patient was performed flap reshaping due to flap fat and clumsy at 5 months postoperative,others,the skin texture and appearance of the flaps were good and satisfactive.Conclusion Free transplantation of the lateral leg peroneal artery perforator flap broke away from the bondage of pedicled flap,had more freedom in flap design,and effectively controlled the trauma of donor and recipient site.The flap have the merits,blood vessel anatomy is relatively stable,blood supply is reliable,harvesting is simple,skin texture is similar to the forefoot and the effect is better,operation of the donor and recipient sites can accomplish under a identical anaesthesia and tourniquet.Thus,the lateral leg peroneal artery perforator free flap is an effective metheod in reparation of the forefoot defects.

Objective To explore the mechanism of Xiaoying decoction on experimental autoimmune thyroiditis (EAT) rats in view of regulatory T cells and Th17 cells.Methods SD rats were divided into five groups,normal control group,model control group,tripterygium glycoside group,Xiaoying decoction low and high dose groups.Except for normal control group,the other groups were established the model of EAT.Rats in the Xiaoying decoction low,and high dose groups were given Xiaoying decoction of 17.24 and 68.95 g·kg-1;rats in the tripterygium glycoside group were given tripterygium glycoside 6.25 mg·kg-1.The serum free triiodothyronine(FT3),free thyrocyte(FT4) and thyroglobulin antibody were detected by RIA method.Thyrocyte morphology was observed under optical microscope.The expression levels of Foxp3 mRNA and IL-17 mRNA were detected by real-time PCR.The changes of Treg cells and Th17 cells were analyzed by flow cytometry.Results Compared with the normal control group,FT3,FT4 and TgAb were increased in the model control group (P ＜0.01,P ＜0.01,P ＜0.05).Compared with the model control group,FT3,FT4 and TgAb were decreased in tripterygium glycoside group and Xiaoying decoction high dose group (P ＜ 0.05).The infiltration score in the normal control group,model control group,tripterygium glycoside group,Xiaoying decoction low and high dose groups were 0,4,4,3.5,2.Compared with model control group,the infiltration was improved (P ＜0.01).Foxp3 mRNA expression was decreased while IL-17 mRNA increased in the model control group as compared with the normal control group(P ＜ 0.01).In contrast,the expression of Foxp3 mRNA was increased and IL-17 mRNA expression was decreased in Xiaoying decoction low and high dose groups,tripterygium glycoside group as compared with the model control group (P ＜0.05).Compared with the normal control group,rats in the model control group had fewer Treg cells and more Th17 cells (P ＜0.01).Compared with the model control group,the percentage of Treg cells was elevated and Th17 cells was reduced in tripterygium glycoside group and Xiaoying decoction high dose groups (P ＜ 0.01).Conclusion The therapeutic mechanism of Xiaoying decoction on EAT rats may be related to changing the percentage of regulatory T cells and Th17 cells with up-regulating the expression of Foxp3 mRNA and down-regulating the expression of IL17mRNA.

Objective To study the antagonistic effect of N-acetylcysteine(NAC)on the damage of hepatic mitochondria of rats induced by cadmium in vitro.Methods The mitochondria were prepared from the clean Wistar rats' whole liver by using differ ential centfifugation.The mitochondria were incubated in the assay buffer containing different concentration of CdCl_2 (10,100,1 000,10 000 ?mol/L)at 37 ℃ for 1 h.The effect of NAC(500 ?mol/L)was studied at a CdCl_2 concentration of 1 000 ?mol/L.The incubation buffer was collected and the level of GSH,cytochrome C and the activity of Mn-SOD were determined. Results Compared with the control group,the level of GSH and Mn-SOD in 100,1 000,10 000 ?mol/L CdCl_2 groups were significantly decreased,the content of cytochrome C in 1 000,10 000 ?mol/L CdCl_2 groups were significantly increased(P

AIM: To investigate 1) the role of transforming growth factor-?_1(TGF-?_1) and macrophage infiltration during the development of myocardial fibrosis(MF) in rats after myocardial infarction(MI);and 2) mechanisms of MF post-MI and the inhibitory effect of angelica.METHODS: Sprague-Dawley(SD) rats were subjected to MI by ligating the left anterior descending coronary artery.The animals were randomly divided into three groups: sham,MI and MI+angelica.After 24 hours of ligation,rats received angelica(20 mL?kg~(-1)?d~(-1),ip) or saline.Left ventricular hemodynamics were measured and rats were killed at week 1,week 2 and week 4, respectively.Collagen content,macrophage infiltration and TGF-?_1 expression were examined in the non-infarcted area.RESULTS: ① In MI group,the numbers of macrophage and TGF-?_1 expression were significantly upregulated compared to sham at week 1 post-MI and remained elevated at week 4(P

BACKGROUND:Cel co-culture can maximize the simulation ofin vivomicroenvironment. Cel scratch test and interleukin-1β can destroy the balance between matrix metaloproteinases (MMPs) and matrix metaloproteinase inhibitors (TIMPs), resulting in extracelular matrix degradation of the articular cartilage, functional disorders of chondrocytes and articular cartilage degeneration. OBJECTIVE:To study the effect of interleukin-1β on migration, MMP and TIMP expression of chondrocytes co-cultured with osteoblast supernatantin vitro. METHODS:There were three groups: chondrocyte monoculture group, osteoblast+chondrocyte group (co-culture group), osteoblast+chondrocyte+interleukin-1β group (interleukin-1β group). Cel scratch test was conducted to observe the migration of chondrocytes within 24 hours. Semi-quantitative PCR test was used to detect the changes in expressions of MMP-1, MMP-2, MMP-3, MMP-9, TIMP-1, TIMP-2, TIMP-3, TIMP-9 in chondrocytes within 24 hours. RESULTS AND CONCLUSION:Compared with the monoculture group, cel migration rate of the other two groups were increased significantly (P< 0.01). Compared with the monoculture group, the gene expressions of MMP-1, MMP-2, MMP-3 and MMP-9 were increased significantly in the coculture group (P < 0. 05); the gene expressions of MMP-1, MMP-3, MMP-9 were increased significantly in the interleukin-1β group (P< 0. 01). Compared with monoculture group, the gene expression of TIMP-1 was increased significantly (P < 0. 01), but the gene expressions of TIMP-3 and TIMP-4 were declined significantly (P < 0. 05) in the other two groups. These findings indicate that co-culture of chondrocytes with osteoblasts can promote chondrocytes migration, enhance gene expression of chondrocytes MMP-1, MMP-2, MMP-3, MMP-9 and regulate gene expression of TIMPs family. Interleukin-1β inhibitsthe migration of chondrocytes co-cultured with osteoblasts and gene expression of TIMPs family.

Objective To research the relation between the time-dependent appearances of myofibroblasts during the repair of contused skeletal muscle in rat and wound age determination. Methods A total of 35 SD male rats were divided into the control and six injured groups according to wound age as fol-lows: 12 h, 1 d, 5 d, 7 d, 10 d and 14 d after injury. The appearances of myofibroblasts were detected by HE staining, immunohistochemistry and confocal laser scanning microscopy. Masson’s trichrome staining was utilized to examine collagen accumulation in the contused areas. Results Immunohistochemical stain-ing showed that α-SMA+ myofibroblasts were initially observed at 5 d post-injury. The average ratio of myofibroblasts was highest at 14 d post-injury, with all samples, ratios more than 50%. In the other five groups, the average of α-SMA positive ratios were less than 50%. The collagen stained areas in the contused zones, concomitant with myofibroblast appearance, were increasingly augmented along with ad-vances of posttraumatic interval. Conclusion The immunohistochemical detection of myofibroblasts can be applied to wound age determination. The myofibroblasts might be involved in collagen deposition during the repair of contused skeletal muscle in rat.

To assess the correlation between thyroid function and glucolipid metabolism in type 1 diabetic adults. A retrospective analysis was conducted in 230 type 1 diabetic adults who were hospitalized in the Department of Endocrinology of Shandong Provincial Hospital Affiliated to Shandong University from January 2008 to January 2020. It showed that thyroid stimulating hormone(TSH) was significantly positively correlated with total cholesterol (TC) ( r=0.239), triglycerides (TG) ( r=0.166) and low-density lipoprotein cholesterol (LDL-C) ( r=0.249), respectively (all P<0.05). Free triiodothyronine (FT 3) was significantly negatively correlated with fasting plasma glucose (FPG) ( r=-0.272), glycated hemoglobin (HbA1c) ( r=-0.240), TC ( r=-0.197) and LDL-C ( r=-0.220), respectively (all P<0.05). Free thyroxine (FT 4) was negatively correlated with TC ( r=-0.171) and LDL-C ( r=-0.170), respectively (all P<0.05). TC was an independent predictor of TSH, FT 3 and FT 4, FT 3 and FT 4 were independent predictors of HbA1c. TSH was an independent predictor of TC, TG and LDL-C. Thyroid function is closely related to glucolipid metabolism in type 1 diabetic adults.