1.Advances in the treatment of Orthopaedic diseases with Bone Marrow Mesenchymal Stem Cells
Chinese Journal of Orthopaedics 2017;37(2):121-128
Bone Marrow Mesenchymal Stem Cells (BMSCs) are ideal seed cells for cell therapy,which have been through many long-term studies of in vitro and animal disease model treatment and have been widely used in preventing and treating a variety of clinical diseases caused by aging and other damage,including bone injury and regeneration,neural degenerative and injury,myocardial injury,liver cirrhosis,diabetes,lung disease and so on.BMSCs application in the treatment of orthopaedic disease is the most common and effective.By retrospective literature review,we summarize the BMSCs transplantation application in Orthopaedic disease treatment.As an ideal cell source,BMSCs was first applied in bone tissue engineering,mainly used in the treatment of long bone defect and bone nonunion;Recently,the research trends of clinical BMSCs application turned to treat degenerative diseases and genetic disorders because of its great potential,including osteoarthrits,femoral head necrosis,disc degeneration,spinal cord injury,knee varus,osteogenesis hypoplasia,hypophosphatasia and so on.The safety and efficacy of BMSCs treatment are the key issues in clinical cell therapy.There is no side effects and complications after BMSCs treatment,prove its clinical application is safe.But due to type and degree of disease and individual differences,therapeutic methods including injection method,effective concentrations,treatment window selection,cycle and therapeatic effects have a bigger difference.There is still no uniform of recognized operation standards for the treatment of the same type of disease.So BMSCs transplantation requires effective control during whole medical process and its application in orthopedic diseases is still lack of large-scale multicenter clinical study.Therefore,this review focuses on induction,summary and analysis in the research status of BMSCs in bone disease treatment,and provide new ideas and methods for BMSCs transplantation in orthopaedic disease prevention and treatment.
2.Analysis on main death causes and potential life lost among residents in Chongqing Wansheng Economic Development Zone during 2014
Chongqing Medicine 2016;45(18):2528-2531
Objective To understand the death level and main death causes among residents in the Wansheng Economic De‐velopment Zone to provide the basis for comprehensive prevention and control .Methods According to the ICD‐10 international classification of diseases ,the death causes were classified and coded for statistically analyzing the crude mortality rate ,standardized mortality rate and the death causes constituents in this surveyed population .Results The crude mortality rate of residents in Wan‐sheng Economic Development Zone during 2014 was 650 .57/100 000 and the standardized mortality rate was 413 .35/100 000 .The sequence of death causes was circulatory system disease ,respiratory system disease ,tumor ,injury and poisoning and digestive sys‐tem diseases .The death number for these 5 kinds of death causes accounted for 93 .21% of the total death number .The top five of potential life loss years were injury and poisoning ,tumor ,circulatory system disease ,respiratory system disease and digestive system diseases .The rates of potential years of life loss were 13 .76‰ ,10 .19‰ ,8 .35‰ ,4 .84‰ and 2 .69‰ respectively .Conclusion Chronic noncommunicable diseases ,injury and poisoning become the main causes of death in the Wansheng Economic Development Zone and disease burden .
3.Advances in mechanisms for inflammation-associated colon carcinogenesis and chemoprevention
Acta Pharmaceutica Sinica 2022;57(5):1273-1281
Colorectal cancer is a common malignant tumor of digestive tract, and the risk of inflammatory bowel disease developing into colorectal cancer is significantly increased. Immune signaling pathways NF-
4.Clinical effects of arthroscopic reconstruction of anterior cruciate ligament and minimally invasive reconstruction of posteromedial corner.
Mia WEI ; Yi-jie LIU ; Yang LIU
China Journal of Orthopaedics and Traumatology 2016;29(5):464-467
OBJECTIVETo evaluate the clinical effects of arthroscopic reconstruction of anterior cruciate ligament (ACL) and minimally invasive reconstruction of posteromedial corner (PMC).
METHODSThere were 22 cases of ACL and PMC tear were performed with reconstruction from March 2012 to February 2014. The patients were 29.4 years old on average, including 8 males and 14 females. ACL reconstruction was performed under arthroscopy and PMC reconstruction was performed minimally invasively through the ACL incision. The stability of knee was assessed by anterior drawer test,Lachman test,vulgus stress test and Slocum test. The function of knee was assessed by Lysholm score and Tegner activity rating. MRI of knee was checked 12 months after operation.
RESULTSThe stability tests of all patients were negative at 2 and 6 months after operation, and there was one positive case in anterior drawer test and another positive case in vulgus stress test at 12 months after operation. Lysholm score of all patients 12 months after operation was 96.8 +/- 6.8, which was significantly better than 32.0 +/- 11.2 before operation. Tegner activity rating of all patients at 12 months postoperatively was 6.1 +/- 0.9, which was significantly better than 0.9 +/- 0.5 before operation. It showed the grafts were very well in the MRI 12 months postoperatively.
CONCLUSIONArthroscopic ACL reconstruction and minimally invasive PMC reconstruction can restore the stability of knee.
Adult ; Anterior Cruciate Ligament ; physiopathology ; surgery ; Anterior Cruciate Ligament Injuries ; Anterior Cruciate Ligament Reconstruction ; Female ; Humans ; Knee Injuries ; physiopathology ; surgery ; Knee Joint ; physiopathology ; surgery ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; Treatment Outcome ; Young Adult
5.Expression of T cell factor-4 gene in dermal papilla cells of hair follicles
Yi LIU ; Fei HAO ; Xichuan YANG
Chinese Journal of Dermatology 2008;41(4):248-250
Objective To investigate the expression of T cell factor-4 (TCF4) gene in dermal papilla cells of hair follicles.Methods The expression of TCF4 gene was examined by in situ hybridization in scalp tissues of patients with alopecia areata and normal human controls,The protein and mRNA exprcssions of TCF4 were detected by immunochemistry and RT-PCR method,respectively,in aggregated and non-aggregated human dermal papilla cells.ResultsAs shown by in situ hybridization,TCF4 gene was expressed in the dermal papilla cells from healthy controls,but not in those from patients with alopecia areata.Both cell immunochemistry and RT-PCR showed that TCF4 gene expressed in aggregated dermal papilla cells,but not in non-aggregated dermal papilla cells.ConclusionsTCF4 gene is expressed in dermal papilla cells.The growth cycle Of follicles may be related to wnt signal.
6.Effect of treatment of chronic periodontitis on level of serum inflammatory markers in elderly patients
Yang HONG ; Liu CONG ; Jiang YI
Chinese Journal of Geriatrics 2011;30(5):413-415
Objective To ascertain serum inflammatory markers could be modified following treatment of periodontal disease in elderly patients. Methods The probing depth (PD), clinical attachment level (AL), C-reactive protein (CRP), interleukin-6 (IL-6) were determined. And then fifty-two elderly periodontitis patients underwent a standard phase of non-surgical periodontitis treatment (consisting of oral hygiene instructions and subgingival scaling and root planning). After three and six months, PD, AL, CRP and IL-6 were determined again and compared to the baseline. Results Six months after treatment, significant reductions in PD [(5.9±1.1) mm vs. (6.8±1.0) mm, P<0.05], AL [(1.3±0.9) mm vs.(8.4±1.1) mm, P<0.05], CRP [(1.5±0.2) mg/L vs. (2.0±0.3) mg/L, P<0.01] and IL-6 [(1.6±0.5) ng/L vs. (1.9±0.4) ng/L, P<0.05] were observed. Conclusions Treatment of chronic periodontitis can decrease the levels of serum inflammatory markers in elderly patients.
7.Preparation and performance of chitosan-gelatin sponge-like wound-healing dressing
Lanzhen HE ; Yi LIU ; Dan YANG
Chinese Journal of Tissue Engineering Research 2007;11(26):5252-5256
BACKGROUND:Chitosan has good filming and viscosity, it contains free amido, and can coordinate and cross-link with gelatin, thus natural semi-interpentrating polymer network structure can be formed among molecules through hydrogen bonds.OBJECTIVE: To prepare sponge-like wound-healing dressing of good porosity, hydrophilia and air permeability by means of frozen chitosan-gelatin mixture induced phase separation.DESIGN: A comparative observation.SETTING: Laboratory of the College of Science, Guangdong Ocean University. MATERIALS: Chitosan was deacetylated by 97.55%, Mη=1.85×106; Gelatin (CP grade) was produced by Shanghai Chemical Dispensing Factory; Glacial acetic acid, NaOH, formaldehyde and glycerin were all CP grade. XL30-EDAX scanning electron microscope (Philips, Dutch); 3365-type universal material testing machine. METHODS: ① By means of frozen chitosan-gelatin mixture induced phase separation chitosan solution of 0.2, 0.4, 0.5, 0.6 and 0.8 (mass fraction) was mixed with gelatin solution, then a small amount of glycerin to prepare sponge-like wound-healing dressing of good porosity, hydrophilia and air permeability. then a small amount of glycerin, and stayed quietly to deaerate. The samples were plated with gold as routine methods, and then the surface and sectional structures were observed under the scanning electron microscope. The effects of different proportion of chitosan and gelatin on the performance parameters (water retention, moisture absorption, avulsion intensity, air permeability rate) of the sponge-like materials were observed. ② Chitosan-gelatin mixtures of 18, 20, 22, 25, 24, 26 and 28 g/L (mass fraction) were used to prepare sponge-like materials, and the effects of different contents on the performances of the materials were observed. ③ The effects of cross-linking agent (formaldehyde) of different dosages (0.002, 0.004, 0.006, 0.008, 0.010, 0.012 and 0.014 in volume fraction) on the avulsion intensity of the materials were observed.MAIN OUTCOME MEASURES: ① Surface and sectional structures of the sponge-like wound-healing dressing; ② Effects of different proportion of chitosan and gelatin on the performance parameters of the sponge-like materials; ③ Effects of different contents on the performances of the chitosan-gelatin sponge-like materials; ④ Effects of cross-linking agent of different dosages on the avulsion intensity of the materials.RESULTS: ① It could be clearly seen from the surface that the chitosan-gelatin sponge-like materials were porous structure, whereas seen from the section, the pores were honey-comb formation or three-dimensional lamellar structure accumulated by porous lamellars. ② When the content of chitosan was greater, the section looked like honey comb;Whereas as the content of chitosan decreased and gelatin content increased, the section tended to parallel lamellar structure, the water content and water retention of corresponding samples had an ascending trend, but the alvusion iintensity increased at first, and then decreased. The mass fraction of 0.5 was suitable for chitosan in the prepared solution by comprehensively analyzing the performance parameters. ③ The lower the total concentration of chitosan and gelatin, the higher the water content, the easier for the formation of bigger self-chips on the surface, the porosity of the prepared materials increased, hydrophilia and water retention ability were increased, but greater cracks formed on the material surface, and avulsion intensity was smaller. As the concentration became higher, the viscosity of the mixture became greater, the excessive viscosity was not good for mixing uniform, thus the material surface was not plain enough, and the porosity was smaller, the hydrophilia and water retention ability were relatively decreased, and the materials were harder. The total concentration should be 22-25 g/L. ④ Once the dosage of cross-linking agent was too low, very few cross-linking points generated, and the intensity was too low; Once the dosage of cross-linking agent was too high, too many cross-linking points generated, and the net space was reduced, then water content and water retention value were decreased; Whereas overdosage cross-linking agent could increase the fragility of the sponge-like materials, manifested as the decrease of avulsion intensity. When formaldehyde of 0.01 in volume fraction, the avulsion intensity was the maximal, thus the dosage of 0.01 in volume fraction was the most suitable.CONCLUSION: The main factors that affect the structures and performances of the sponge-like wound-healing dressing are the proportion of chitosan and gelatin in the mixture, total concentration of the prepared solution, amount of powder and dosage of cross-linkage agent, etc. The best matching iss chitosan of 0.05 (volume fraction)/gelatin of 0.05 (volume fraction), total mass concentration of 22-25 g/L, amount of chitosan-gelatin powder mixture is 1∶1, and the dosage of cross-linking agent is 0.01 (volume fraction).
8.Several surgical skills and the discussion to the question of primary retroperitoneal tumor
Jinlei YANG ; Jiacong CHANG ; Yi LIU
Clinical Medicine of China 2010;26(1):59-61
Objective To investigate the strategy and announcements of surgery in primary retroperitoneal. tumor for improving the rescetable rate and decreasing the surgical risk.Methods Clinical data of 50 cases undergoing surgery of retroperitoneal tumor in our hospital from January 2004 to December 2008 were retrospectively analyzed.Results Tumors were benign in 20 cases and malignant in 30 cages.Complete resection was achieved in 39 cases(78%).in which combined organ resection carried out in 10 cases(20%),3 cases(6%)underwent partial resection.non-resection and had biopsy only were performed in 8 cases(16%),so the rescetable rate of this clinical weTe 84%(42/50).Conclusions Abundant preoperative preparation,wide open operation field and distinct anatomical dissection were the essential condition of the resecting primary retroperitoneal tumor.The relevant surgical skill should decrease the surgical risk.The tumor should be completely reaeeted in principle,and invaded neighboring organs should be resected with the discretion at the gane time.Completely resected was the key 10 improving the surviral rate and the strategy to decreasing the reeurence rate for recurrent retroperitoneal tumor.
10.Asymmetric index analysis on the orthodontic-orthognathic treatment of facial asymmetry patients in skull positioning posterior-anterior radiographs.
West China Journal of Stomatology 2014;32(2):138-144
OBJECTIVETo analyze the asymmetry of measurements in facial asymmetry patients with skull positioning posterior-anterior radiographs after orthodontic-orthognathic treatment.
METHODSPosterior-anterior cephalometric radiography and cephalometric analysis were performed in forty-five patients with different degrees of facial asymmetry. A single sample t-test was conducted to compare the asymmetry of measurements before treatment and individual normal occlusion. The measurement and reference values in facial asymmetry patients who underwent orthodontic-orthognathic treatment were summated by analyzing the correlation coefficient. The paired t-test was employed to compare the difference between the two groups before and after the treatment.
RESULTSFourteen measurements were significantly different before the treatment and individual normal occlusion (P < 0.05). Me[X] exhibited a higher correlation index of Ag[X] in forty-five cases. Twenty-eight patients showed the main asymmetry in the mandibular body, whereas fifteen patients in the ramus. Two patients showed the main asymmetry in both mandibular body and ramus. Fifteen measurements were significantly different before and after the treatment (P < 0.05).
CONCLUSIONFacial asymmetry is mainly concentrated in one-third of the surface, primarily manifested in the mandibular body. Orthodontic-orthognathic treatment is preferred when Ag[X] is greater than the minimum reference value of 11.31%, Go[X] is greater than 9.79%, and Me[X] is greater than 5.2 mm.
Cephalometry ; Face ; abnormalities ; Facial Asymmetry ; congenital ; Humans ; Hyperplasia ; Mandible ; Skull