Objective To compare the clinical effect of two ways of the closed reduction internal fixation and open reduction internal fixation in the treatment of joint injury.Methods According to the digital table,84 patients with joint injury were randomly divided into control group and treatment group,42 cases in each group.The control group was given closed reduction and internal fixation,and the treatment group was given open reduction and internal fixation.Results The total time of operation,postoperative hospitalization time,postoperative joint function recovery time of the treatment group were (78.51 ±10.20)min,(13.35 ±2.46)d,(88.43 ±5.27)d,those of the control group were (118.73 ±25.71)min,(19.72 ±3.57)d,(107.42 ±10.33)d,the differences were statistically signifi-cant(t =9.424,9.522,10.613;P =0.000,0.000,0.000).The excellent and good rate of the treatment group was 90.48%,which was higher than 71.43% of the control group,the difference was statistically significant(χ2 =4.941, P =0.026).The treatment group had 1 case of adverse reaction,the control group had 8 cases of adverse reaction, there was statistically significant difference between the two groups(χ2 =6.098,P =0.014).After treatment,the VAS pain score in the treatment group was (2.11 ±0.68)points,which was lower than (4.98 ±1.35)points in the control group,the difference was statistically significant(t =12.305,P =0.000).Conclusion The application effect of closed reduction and internal fixation for patients with joint injury disease is very obvious.

Objective To establish an animal model for study on early oral fluid resuscitation of burn shock so as to provide experimental basis for oral fluid resuscitation of burn shock in wars, accidents or disasters. Methods Male Beagle dogs weighing 11-13 kg were used in the study and the carotis, jugular and duodenum were cannulated respectively for measurement of homodynamics, tissue perfusion and gastrointestinal function. Dogs were subjected to a 35% TBSA full thickness flame injury with 10-mi-nute anesthesia by intravenous injection of propofol 24 hours later, and then randomly and equally divided into two groups(8 dogs in each group) : no fluid resuscitation group (NR group) undergoing no treatment in the first 24 hours post burn and oral fluid resuscitation group ( OR group) undergoing gastric infusion of glucose electrolyte solution (GES) according to Parkland formula. From the second 24 hours post burn, animals in two groups were given delayed Ⅳ fluid resuscitation, and then intravenous nutritional support was initiated at the 72nd hour. The mean arterial pressures (MAP), cardiac output (CO), dp/dt max of left ventricular contractility (dp/dtmax) and plasma volume (PV) were monitored continuously. The pa-rameters of gastrointestinal tissue peffusion, the rates of gastric emptying and intestinal absorption of GES were determined, the morbidity was also recorded at the end of 5-day experiment. Results After 35% TBSA burn injury, MAP, CO,dp/dt max and PV dropped markedly and gastrointestinal tissue perfusion reduced obviously. CO and PV in OR group were significantly higher than those in NG group at 4, 8 and 24 hours after burn. Homodynamic parameters and gastrointestinal tissue perfusion in OR group were pro-moted to pre-injury level at 48 and 72 hours respectively, while homodynamic parameters in NR group did not return to pre-injury level till 72 hours, and gastrointestinal tissue perfusion kept lower than pre-injury till 120 hours post burn. Rates of gastric emptying and intestinal absorption of GES significantly reduced to the lowest level (42% and 37% of pre-injury) at about 4 hours post bum, but did not return to pre-in-jury level till eight hours post bum. Over five days, two out of eight dogs (25%) died in NG group but none in OR group. Conclusions The animal model can exactly simulate the actual circumstance, where oral resuscitation is superior to Ⅳ resuscitation in some aspects in treating early bum shock in wars, accidents and disasters, and provide practical and reliable method for measurement of homodynamic parameters, tissue perfusion, gastric emptying and intestinal absorptive function.

Objective To investigate the effect of carbachol on local gut inflammation during entetal resuscitation of rats with bum shock. Method Thirty-eight Wistar rats were subjected to 35%TBSA full thickness scald injury, and enteral fluid was infused into animal intestines via duodenal stomas 30 minutes post bum. The animals were randomly divided into four groups: no resuscitation (Control, n = 8), enteral resuscitation using either a glucose electrolyte solution (GES, n = 10) or GES plus carbachol (60 μg·kg-1,GES/CAR, n = 10), or carbachol alone (CAR, n = 10) .The volumeof GES infusion was based on the Parkland formula (4 ml· 1% TB-SA-1·Kg-1) - All animals were sacrificed 4 hours post bum, and specimens of jejunal tissue were collected to determine the levels of tumor necrosis factor (TNF)-α, nitric oxide (NO), nitric oxide synthase (NOS) and myeloperoxidase (MPO). Serum assays for plasma diamine oxidase (DAO) activities were also performed. Results There were no statistical differences in the intestinal levels of NOS, NO, TNF-α and MPO, and plasma OAO activities, between the GES group and the control group. Compared to the GES group, the GES/CAR group showed significantly lowered levels of intestinal NOS (1.276 ±0.391 vs. 1.818 ±0.436, P＜0.05), NO (0.925 ±0.402 vs. 1.561 ±0.190, P ＜ 0.05, TNF-α (0.87±0.13 vs. 1.94±0.47, P ＜0.01) and MPO (0.465 ±0.092 vs. 0.832±0.214, P＜0.05),and reduction in plasma DAO activites (0.732±0.192 vs. 1.381 ±0.564, P ＜0.05). The CAR group also showed significantly lowered levels of intestinal NOS, NO, TNF-α and MPO and reduced plasma DAO activites, compared to the GES group. Conclusions Theses results suggest that carbachol significantly inhibits the release of proinflammatory mediator and attenuates local inflammation in gut during enteral fluid resuscitation of rats in rats with bum shock. We postulate that carbachol may exert its and-inflammatory effects via the cholinergic anti-inflammatory pathway.

In this study the treatment effect of combined implantation of autologous skin on pig dermis in injured rats was observed. Twenty-one Wistar rats were used, and the wounds were formed by excising a piece of full thickness skin on the back. After the pig dermis was implanted, the autologous skin was grafted on the dermis at 0.7 and 10 days. In the group with perforated pig dermis, the autograft skin was implanted on the day when the pig dermis was implanted. The healing effect was evaluated by measuring wound area, and by observing the growth of the autograft skin. Two weeks after the autograft skin was implanted, the skin securely adhered to the dermis, and the edge of autograft skin expanded clearly. The wound of the autograft skin implanted in the perforation of the dermis healed completely after 3 weeks, but the other 3 groups had remnant small wound. The autograft skin merged with the dermis and its surrounding tissue, but a clear dividing line still existed between autograft skin and dermis after implantation. The area of the implanted dermis and autograft skin varied from 51.8% to 65.9% compared to its original size. The results suggested that the time and the way of autologous skin grafting on xenogenous dermis may influence wound contraction and healing time.
Animals ; Dermis ; transplantation ; Female ; Graft Survival ; Male ; Rats ; Rats, Wistar ; Skin Transplantation ; methods ; Swine ; Swine, Miniature ; Transplantation, Autologous ; Transplantation, Heterologous

Objective To detect the blood parameter, blood biochemical and electrolyte indices of the F1 generation of Rongshui miniature pig ( RMP) .Methods The blood of 43 female and 42 male RMPs of 4 th month old, and 36 RMPs of 12th month old ( half male and female) were extracted from jugular vein.And the blood parameter, blood biochemical and electrolyte indices were detected by blood analyzer and automatic biochemical analyzer.Results In the same month-old RMP, no significant difference between male and female were found in most indices of blood parameter, blood biochemical and electrolyte indices.On the other hand, many indices were difference between 4th month old and 12th month old RMPs of same gender.Compared with the 4th month old RMP, the 12th month old RMP decreased significantly in WBC and PLT, increased in HGB ( P <0.05 ) while RBC was the same ( P >0.05 ) .Serum ALT, AST, ALP, CK (male), LDH(male), A/G, BUN, GLU (female), CHOL (male) and K+decreased significantly (P <0.05), while serum TP, TBIL, CR and Ca2+increased significantly (P <0.05),but serum CHOL, TG, HDL-C and LDL-C were not different.86.4%(19/22) biochemical and electrolyte indices in RMP were in/or close to the range of normal value of human.Conclusion Most of the blood parameter, blood biochemical and electrolyte indices of RMP were close to human’ s normal value.

Objective To estimate clinical application of multiplex ligation-dependent probe amplification (MLPA) for rapid prenatal detection of aneuploid abnormalities in amniotic fluid.Methods Totally 1229 amniotic fluid samples were collected from the pregnant women receving prenatal diagnosis for chromosomal abnormalities in Prenatal Diagnosis Center of Shenzhen Maternity and Child Healthcare Hospital from October 2009 to December 2010.All the samples were investigated independently with both MLPA and G-band karyotyping to detect aneuploidies of chromosomes X,Y,13,18 and 21.A comparison was followed the results acquired from two methods for evaluation of sensitivity and specificity of MLPA.ResultsThirtyeight aneuploidies were detected by G-band karyotyping,in which 34 were nonmosaic aneuploidies and 4were mosaic aneuploidies.MLPA and G-band karyotyping had consistent results in detecting the nonmosaic aneuploidies of chromosomes X,Y,13,18 and 21. Among 4 mosaic aneuploidies detected by G-band karyotyping,2 were confirmed by MLPA independently.Conclusions The sensitivity and specificity of MLPA in detecting the nonmosaic aneuploidies of chromosomes X,Y,13,18 and 21 were clinically acceptable.MLPA provides an efficient,reliable method for rapid detection of aneuploidies.

OBJECTIVETo perform mutation analysis for a female with multiple epiphyseal dysplasia (MED) and provide pre-symptomatic and prenatal diagnosis.

METHODSMutation screening of cartilage oligomeric matrix protein (COMP) gene was carried out through targeted next-generation DNA sequencing and Sanger sequencing.

RESULTSA novel c.956 A>T resulting in substitution of Aspartic acid 319 for Valine (p.Asp319Val) has been identified in exon 9 of the COMP gene in the patient. As predicted by a SIFT software, above mutation can cause damage to the structure of COMP protein.

CONCLUSIONA novel c.956 A>T substitution mutation has been identified in a patient featuring MED.

Adult ; Base Sequence ; Cartilage Oligomeric Matrix Protein ; Exons ; Extracellular Matrix Proteins ; genetics ; Female ; Glycoproteins ; genetics ; Humans ; Matrilin Proteins ; Mutation ; Osteochondrodysplasias ; diagnosis ; genetics ; Polymorphism, Single Nucleotide ; Sequence Alignment

OBJECTIVETo use array comparative genomic hybridization (array-CGH) and multiplex ligation-dependent probe amplification (MLPA) to detect unbalanced rearrangements in 4 cases suspected to have chromosome disease but were undetected with conventional karyotype analysis, and to assess the applicability of array-CGH and MLPA for detection of unbalanced translocation.

METHODSGenomic DNA was extracted with standard procedures. All cases were analyzed by array-CGH and subtelomeric MLPA.

RESULTSAll of the cases were identified to have unbalanced translocations by array-CGH analysis, among which 3 were consistent with subtelomeric MLPA analysis. For the remaining one, its chromosomal abnormality was not detected by MLPA as the imbalance has occurred outside of target regions.

CONCLUSIONBoth array-CGH and MLPA techniques can complement conventional karyotyping for detecting unbalanced translocations. The combination features both high resolution and efficiency for clinical use.

Adult ; Child ; Chromosome Deletion ; Chromosome Duplication ; Comparative Genomic Hybridization ; Humans ; Infant ; Karyotyping ; Male ; Multiplex Polymerase Chain Reaction ; Phenotype ; Translocation, Genetic

Objective: To explore the influence of directed restrictive fluid management strategy (RFMS) on patients with serious burns complicated by severe inhalation injury. Methods: Sixteen patients with serious burns complicated by severe inhalation injury hospitalized in our department from December 2014 to December 2017, meeting the inclusion criteria and treated with RFMS, were enrolled in directed treatment group. Thirty-four patients with serious burns complicated by severe inhalation injury hospitalized in our department from December 2012 to December 2017, meeting the inclusion criteria and without RFMS, were enrolled in routine treatment group. Medical records of patients in 2 groups were retrospectively analyzed. Within post injury day 2, mean arterial pressure (MAP), central venous pressure (CVP), extravascular lung water index (ELWI), global end-diastolic volume index, and pulmonary vascular permeability index of patients in directed treatment group were monitored by pulse contour cardiac output monitoring technology, while MAP and CVP of patients in routine treatment group were monitored by routine method. On post injury day 3 to 7, patients in 2 groups were treated with routine fluid supplement therapy of our Department to maintain hemodynamic stability, and patients in directed treatment group were treated according to RFMS directed with goal of ELWI≤7 mL·kg^-1·m^-2. On post injury day 3 to 7, total fluid intake, total fluid output, and total fluid difference between fluid intake and output within 24 h, value of blood lactic acid, and oxygenation index of patients in 2 groups were recorded. Occurrence of acute respiratory distress syndrome (ARDS) on post injury day 3 to 7 and 8 to 28, mechanical ventilation time within post injury day 28, and occurrence of death of patients in 2 groups were counted. Data were processed with chi-square test, t test, and analysis of variance for repeated measurement. Results: The total fluid intakes within 24 h of patients in directed treatment group were close to those in routine treatment group on post injury day 3, 4, 5, 6, 7 (t=-0.835, -1.618, -2.463, -1.244, -2.552, P>0.05). The total fluid outputs and total fluid differences between fluid intake and output within 24 h of patients in 2 groups on post injury day 3 were close (t=0.931, -2.274, P>0.05). The total fluid outputs within 24 h of patients in directed treatment group were significantly higher than those in routine treatment group on post injury day 4, 5, 6, 7 (t=2.645, 2.352, 1.847, 1.152, P<0.05). The total fluid differences between fluid intake and output within 24 h of patients in directed treatment group were (2 928±768), (2 028±1 001), (2 186±815), and (2 071±963) mL, significantly lower than (4 455±960), (3 434±819), (3 233±1 022), and (3 453±829) mL in routine treatment group (t=-4.331, -3.882, -3.211, -4.024, P<0.05). The values of blood lactic acid of patients in directed treatment group and routine treatment group on post injury day 3, 4, 5, 6, 7 were close (t=0.847, 1.221, 0.994, 1.873, 1.948, P>0.05). The oxygenation indexes of patients in directed treatment group on post injury day 3 and 4 were (298±78) and (324±85) mmHg (1 mmHg=0.133 kPa ), which were close to (270±110) and (291±90) mmHg in routine treatment group (t=-1.574, 2.011, P>0.05). The oxygenation indexes of patients in directed treatment group on post injury day 5, 6, 7 were (372±88), (369±65), and (377±39) mmHg, significantly higher than (302±103), (313±89), and (336±78) mmHg in routine treatment group (t=3.657, 3.223, 2.441, P<0.05). On post injury day 3, 4, 5, 6, 7, patients with ARDS in directed treatment group were less than those in routine treatment group, but with no significantly statistical difference between the 2 groups (χ²=0.105, P>0.05). On post injury day 8 to 28, patients with ARDS in directed treatment group were significantly less than those in routine treatment group (χ²=0.827, P<0.05). The mechanical ventilation time within post injury day 28 of patients in directed treatment group was apparently shorter than that in routine treatment group (t=-2.895, P<0.05). Death of patients in directed treatment group within post injury day 28 was less than that in routine treatment group, but with no significantly statistical difference between the 2 groups (χ²=0.002, P>0.05). Conclusions Under the circumstance of hemodynamics stability, RFMS directed with goal of ELWI≤7 mL·kg^-1·m^-2 on post injury day 3 to 7 is an useful strategy, which can reduce occurrence rate of ADRS and shorten mechanical ventilation time of patients with serious burns complicated by severe inhalation injury at late stage of burns.

OBJECTIVETo explore the expression of collagen triple helix repeat containing 1 (CTHRC1) in colorectal cancer and study its role in regulating the biological behaviors of colorectal cancer LoVo cells in vitro.

METHODSReal-time PCR and Western blotting were used to detect the expressions of CTHRC1 in colorectal cancer tissue and paired adjacent nontumorous tissue and in 5 colorectal cancer cells. pGPU6-CTHRC1-shRNA was transfected into LoVo cells and the changes in cell proliferation was assessed using cell counting kit-8 (CCK8) assay; the changes in cell migration and invasion were investigated using Transwell assay; plate colony forming test was used to evaluate the adhesion and colony forming activity of the cells. Western blotting was used to analyze the changes in the expressions of the related pathway markers.

RESULTSThe relative expression of CTHRC1 mRNA in the cancer tissue specimens was 0.0411∓0.054, significantly higher than that in the adjacent tissues (P=0.016); this result was consistent with that of the protein assay. SW620 and LoVo cells showed obviously higher expressions of CTHRC1 than HT29 and SW480 cells at both mRNA and protein levels. LoVo cells transfected with CTHRC1 shRNA exhibited significantly suppressed proliferation, migration, invasion and colony-forming ability (P<0.05) and lowered expression of phosphorylated ERK1/2 (P-ERK1/2), but the expression of total ERK1/2 showed no obvious changes. CTHRC1 inhibition caused reverse epithelial-mesenchymal transition LoVo cells shown by increased E-cadherin expression and decreased expressions of N-cadherin, vimentin, and β-catenin.

CONCLUSIONCTHRC1 is up-regulated in colorectal cancer tissues and SW620 and LoVo cells to promote the cell proliferation, migration, invasion and colony formation. CTHRC1 can enhance epithelial-mesenchymal transition of colorectal cancer cells by activating ERK1/2 to promote tumor cell metastasis and invasion.

Cadherins ; metabolism ; Cell Line, Tumor ; Cell Movement ; Cell Proliferation ; Colorectal Neoplasms ; metabolism ; pathology ; Epithelial-Mesenchymal Transition ; Extracellular Matrix Proteins ; metabolism ; Humans ; RNA, Messenger ; RNA, Small Interfering ; Real-Time Polymerase Chain Reaction ; Transfection ; Vimentin ; metabolism ; beta Catenin ; metabolism