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Objective:To compare the efficacy of 3D-printed guide plate assisted versus freehand placement of cannulated screws for the treatment of Sanders type II and III calcaneal fractures.Methods:A retrospective cohort study was conducted to analyze the clinical data of 29 patients with Sanders type II and III calcaneal fractures admitted to Chonggang General Hospital from June 2020 to October 2022. Among them, there were 18 males and 11 females, with an age range of 22-69 years [(40.1±11.5)years]. Nineteen patients were treated with individualized 3D-printed guide plate assisted placement of cannulated screws (3D-printed group) and 10 were treated with freehand placement of cannulated screws (freehand group). The surgical time, fluoroscopy times, postoperative 6-month calcaneal morphology (length, width, height, B?hler angle and Gissane angle), and American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score and Maryland functional score assessed at 3, 6 months after operation and at the final follow-up were compared between the two groups. The incision healing and complications were observed.Results:The patients were followed up for 6-24 months [(11.3±2.5)months]. The surgical time and fluoroscopy times in the 3D-printed group were (53.4±9.1)minutes and (7.3±1.1)times, respectively, which were shorter than (90.2±16.0)minutes and (16.0±3.2)times in the freehand group (all P<0.01). At 6 months after operation, there was no significant difference in calcaneal length between the two groups ( P>0.05); the calcaneal width, height, B?hler angle and Gissane angle in the 3D-printed group [(34.0±1.8)mm, (47.2±1.6)mm, (27.8±1.0)°, (129.2±2.8)°] were superior than those in the freehand group [(37.5±2.0)mm, (43.0±2.7)mm, (25.8±1.5)°, (125.9±2.5)°] (all P<0.01). At 3, 6 months after operation and at the final follow-up, the values of AOFAS ankle-hindfoot score in the 3D-printed group [(72.2±2.3)points, (79.7±2.3)points, (86.5±4.4)points] were higher than those in the freehand group [(64.2±6.9)points, (73.4±4.2)points, (81.8±3.1)points] (all P<0.05); the values of Maryland score in the 3D-printed group [(71.4±7.7)points, (84.7±2.6)points, (91.5±2.5)points] were higher than those in the freehand group [(65.2±5.6)points, (79.1±3.8)points, (87.1±2.9)points] (all P<0.05). All surgical incisions were healed in stage I. In the 3D-printed group, there were no complications regarding infection, iatrogenic vascular or nerve injury, or fixation failure after surgery. In the freehand group, one patient with lateral sural cutaneous nerve injury was resolved spontaneously without specific treatment. Conclusion:Compared with freehand placement of cannulated screws, 3D-printed guide plate assisted placement of percutaneous placement has the advantages of shorter surgical time, fewer fluoroscopy times, lower reduction loss, better ankle joint function recovery, and less complications in treating Sanders type II and III calcaneal fractures.
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Objective To investigate the clinical efficacy of penicillin combined with ceftriaxone in early syphilis patients.Methods60 patients with early syphilis treated from February 2014 to February 2016 were included in the study,according to the random number table method,the patients were divided into control group (simple penicillin treatment) and treatment group (Penicillin and ceftriaxone sodium), 30 cases in each group.The skin lesions subsided within one week of two groups were recorded.The toluidine red blood serum test (TRUST) was carried out at 3 months, 6 months, 9 months and 12 months after treatment, and the serum fixation rate of the patients in the two groups were observed.ResultsThe rate of pain relief within one week in the treatment group was 90.0% (27/30), which was significantly higher than that in the control group (66.7%, 20/30), (χ2=4.81, P=0.02);TRUST negative rates of the treatment group after treatment for 3 months, 6 months, 9 months and 12 months were 36.7%(11/30), 70.0% (21/30), 86.7% (26/30), 90.0% (27/30),the control group was 13.3%(4/30), 26.7% (8/30), 50.0% (15/30), 63.3% (19/30), [χ2=(4.35,11.27,9.31,5.96), P=(0.00,0.00,0.00, 0.01)].The serum fixation rate in the treatment group was 3.3%(1/30), which was significantly lower than that in the control group (20.0%, 6/30),(χ2=4.04, P=0.04).ConclusionPenicillin combined with ceftriaxone sodium in the treatment of early syphilis patients can help to promote the disappearance of skin lesions, accelerate the patients with syphilis serum negative and reduce serum fixation rate, the effect is significant, to be further studied to promote.
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Objective:To explore the improvement effect of rhein lysinate (RHL)on the insulin resistance in the KK/HlJ diabetes mellitus (DM ) mice induced by streptozotocin (STZ ), and to elucidate its mechanism. Methods:The KK/HlJ diabetic mouse models were made by intraperitoneal injection of STZ (50 mg· kg-1 )and fed with DM diet.A total of 48 mice were divided into normal control group,model group,low dose of RHL group (25 mg·kg-1 )and high dose of RHL group (50 mg·kg-1 ) (n= 12).All the mice were treated for 16 weeks. The levels of fasting glucose (FBG),total cholesterol (TC)and triglyceride (TG)of the mice were measured by glucose oxidase method.HE staining was used to observe the morphology of pancreas tissue of the mice.The insulin level in pancreas islet tissue was detected by immunohistochemistry method.The levels of insulin and of C reactive protein (CRP)in serum and tumor necrosis factorα(TNF-α)and interleukin 6 (IL-6)in liver tissue of the mice were detected by enzyme linked immunosorbent assay (ELISA)method.The expression levels of glycogen synthesis related genes (PI3K,AKT and GSK-3β)phosphorylation were detected by Western blotting method. Results:Compared with model group,the levels of FBG,TG and TC of the mice in low and high doses of RHL groups were significantly decreased (P < 0.05),but there was no significant difference in the insulin level (P >0.05).Compared with model group,the levels of CRP in serum and the levels of TNF-αand IL-6 in liver tissue of the mice in low and high doses of RHL groups were significantly decreased (P <0.01).The HE staining results showed that compared with model group,the islet morphology of the mice in low and high doses of RHL groups was partially restored,and the occasional inflammatory infiltration was observed.The immunohistochemical staining results showed that compared with model group,the brown granular substance in the islets of the mice in low dose of RHL group was significantly reduced,which was disappeared in high dose of RHL group.Compared with model group,the expression levels of glycogen synthesis related genes (PI3K,AKT and GST-3β)phosphorylation of the mice in low and high doses of RHL groups were increased (P <0.01).Conclusion:RHL has improvement effect on the insulin resistance in the KK/HlJ DM mice induced by STZ,and the mechanism may be related to promoting the glycogen synthesis.
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Objective To investigate the protective effects of rhein lysinate ( RHL) on cardiac tissue damage in-duced by paraquat in experimental mice , and to clarify its mechanism .Methods In this study mice were assigned to the following three groups: control, paraquat model, and RHL-treated groups.The model of oxidative damage mice was established by intraperitoneal injection of paraquat .RHL-treated group was given RHL ( 50 mg/kg ) by gavage for one week before performing model .The other two groups were given equal volume of distilled water .For making model , paraquat was intraperitoneally injected in the paraquat model and RHL-treated group .The content of MDA was detected by thiobarbituric acid assay .The activities of SOD and GSH-Px were detected by biphenyl three phenolic autoxidation assay and NADPH coupling method respectivly .The pathological profile of cardiac tis-sue was observed by hematoxylin and eosin ( HE) staining and reactive oxygen species was observed by DCFH-DA staining .The change of proteins related to myocardial damage detected by Western blot .Results Compared with control group, the activities of SOD and GSH-Px decreased (P<0.05) and the content of MDA increased (P<0.05) in paraquat model group .However , these changes were attenuated byr RHL treatmen ( P<0.05 ) .The pathologi-cal examination indicated the structure of cardiac tissue was damaged and reactive oxygen species of cardiac tissue was increased after paraquat was given , however , these changes were attenuated after RHL treatmen .It was shown in western blot analysis that compared with control group , the expression of SIRT1 decreased, the acetylation of P53 and the expression of P 53 and P66 increased in paraquat-treated group .These changes were attenuated by RHL treatmen ( P<0.05 ) .Conclusions RHL may attenuate paraquat-induced cardiac injury in mice .
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Objective To investigate the effects of rhein lysinate (RHL)on the expressions of TNF-α,IL-6 and NF-κB in the kidney tissue of senescence accelerated mouse prone 10 (SAMP 10)mice.Methods We selected 1 8 male mice (SAMP 1 0 )aged 7 months for the study and randomly divided them into blank control group and groups of different concentrations of RHL;six senescence accelerated mouse resistance 1 (SAMR 1 )served as the young control group.After 6 weeks’ treatment,HE staining was used to detect the pathological changes of the kidney.The expressions of TNF-α,IL-6 and NF-κB at the protein level were detected by immunohistochemistry and Western blotting.Results RHL treatment did not affect the body weight of SAMP 10 mice (P>0.05 ). Compared with SAMR 1 mice, contracted and destroyed renal glomeruli and infiltration of mononuclear macrophages were observed in control SAMP10 mice.However,this pathological process was blocked by RHL (25 mg/kg and 50 mg/kg ) treatments. In addition, the overexpressions of TNF-α, IL-6 and NF-κB and the phosphorylation of NF-κB in the kidney tissue of SAMP 10 mice could be inhibited by RHL treatments (P<0.05). Conclusion RHL inhibits the inflammatory reaction of the kidney tissue,which may be one of the mechanisms by which RHL exerts its kidney-protecting and anti-aging effects.
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ObjectiveTo discuss the mechanism of the growth inhibitory effects of berberine on human osteosarcoma cell MG63.MethodsMG63 cells were divided into a control group and a processing group.The inhibition ratio of two groups was measured by CCK-8 assay,and the mechanism of the growth inhibitory effect was studied by Western Blot assay.ResultsThe inhibition ratio of MG63 cells,which were respectively treated with berberine at 0 (control group),1,5,10,20,50 μg/ml,were (99.37± 1.13) ％,(91.37±4.25)％,(72.44 ± 2.89)％,(57.33 ± 1.37)％,(50.14 ± 4.05)％ and(37.53 ± 4.14)％ after 48h.The semiquantitative expression of Bcl-2 in MG63 treated with berberine at 0 (control group),20,50 μg/ml after 48h was (0.4167±0.0115),(0.3458±0.0146),(0.2987±0.0207),while the Bax and caspase-9 was (0.4327±0.0206),(0.5007±0.0089),(0.7115±0.0214) and (0.1459±0.0107),(0.2416±0.0098),(0.2584±0.0330).Compared with the control group there was statistically significance (P＜0.05).ConclusionBerberine had inhibitory effects of on MG63.The mechanism lied in its regulating the expression of apoptosis gene Bcl-2 and Bax,activating caspases-9,and inducing cell apoptosis.