1.The clinical application of cross-leg flaps for coverage of bone exposure on the leg.
Chinese Journal of Plastic Surgery 2002;18(6):346-347
OBJECTIVETo evaluate the cross-leg flap for repairing the soft tissue defect of the leg.
METHODSTwenty-tree patients with exposure wounds on the leg were selected for the treatment by using different kinds of the cross-leg flaps, including 5 in medial knee skin flap, 12 in gastrocnemius myo-cutaneous flap and 6 in posterior calf fascial skin flap.
RESULTSThe patients were successfully treated with the complete survival of the flaps. No infection occurred. The results were good with the long-term follow-ups.
CONCLUSIONThe method of the cross-leg flap is a safe and good way for repairing the soft tissue defects of the leg with the advantages such as color and texture of the transplanted tissue to be matched the recipient well.
Adolescent ; Adult ; Child ; Child, Preschool ; Female ; Humans ; Leg Injuries ; surgery ; Male ; Middle Aged ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps ; Transplantation, Autologous ; Treatment Outcome ; Wound Healing
2.Effect of pulsed magnetic fields on endogenous neural stem cell factors in the brain after craniocerebral injury
Xiao GAN ; Dongbo ZHANG ; Xiangye LIU ; Liupeng FU ; Xinxue BAI ; Nanli WU
Chinese Journal of Tissue Engineering Research 2017;21(21):3376-3381
BACKGROUND:Studies have shown that pulsed electromagnetism has a good effect in promoting peripheral nerve regeneration after cerebral infarction and spinal cord injury, and improving memory function in patients with neurological disorders. OBJECTIVE: To investigate the impact of pulsed magnetic field on brain function and endogenous neural stem cell factor in the brain tissue of rats with brain injury. METHODS: Totally 320 adult male Sprague-Dawley rats were randomly divided into model group, pulsed magnetic field 0.1 mT group, pulsed magnetic field 0.3 mT group and pulsed magnetic field 0.5 mT group (n=80 per group). After brain injury models were established using lateral hydraulic strike method, rats in the latter three groups were exposed to pulsed magnetic fields 0.1, 0.3, 0.5 mT, respectively. After electromagnetic radiation 1, 3, 7, 14 days, the motor function of rats was evaluated by beam-walking test and water maze test. Rats were intraperitoneally injected 5-deoxy-uridine (BrdU) at 1 day prior to different radiation time points, and BrdU and nestin expressions in the cerebral cortex were measured by immunohistochemical method. RESULTS AND CONCLUSION: (1) The time of water maze test and the beam-walking test at 1, 3 and 7 days after irradiation was ranked as follows: pulse magnetic field 0.5 mT < pulse magnetic field 0.3 mT < pulse magnetic field 0.1 mT < model group, and there were significant differences between groups (P < 0.05). (2) The expressions of BrdU and nestin at 1, 3 and 7 days after irradiation were highest in the pulse magnetic field 0.5 mT group, successively followed by pulse magnetic field 0.3 mT group, pulse magnetic field 0.1 mT group and model group (P < 0.05). In summary, the pulse magnetic field exhibits remarkable protective effects on the brain function of rats with craniocerebral injury in an intensity-dependent manner. The possible mechanism is related to the activation of neural stem cells and the proliferation of neural stem cells in the brain tissue of rats with craniocerebral injury.
3.Construction and screening of a cDNA expresssion library of Clonorchis sinensis adult worm
Xiuping WU ; Liqang GAO ; Ling ZHANG ; Hongkuan DENG ; Xiangye LIU ; Chunyan YE ; Zijian WANG ; Xuelin WANG ; Feng WANG ; Mingyuan LIU
Chinese Journal of Veterinary Science 2009;29(7):868-872
In order to screen antigenic genes of Clonorchis sinensis (C.sinensis).Firstly,a cDNA expression library from adult worms of C.sinensis was successfully constructed with lambda ZAP express vector.Total RNA of C.sinensis adult worms were extracted by the Trizol reagent and mRNA were further purified through oligo-dT cellulose.The first strand eDNA was synthesized by using MMLV reverse transcriptase.After the synthesis of the second strand,the cDNA were purified by CHROMA SPIN-400 kit and then ligated with lambda ZAP express vector,then packaged in vitro and amplified.The original library contained 1.5 × 106 pfu cDNA clones,the titer of amplified library reached 1.5 × 1010 pfu/mL,in which about 99% clones were recombinants and most of insert DNA fragments were 0.4-2.0 kb.Secondly,immunoscreened using the naturely infected man serum from C.sinensis.The positive clones were sequenced and analyzed.From 2.0 × 105 recombinant clones of the eDNA library,41 positive clones were obtained.Sequence analysis indicated that the cDNAs encoded proteins including glycine rich antigen 2,proline rich antigen 2 and antigen Cs44 from C.sinensis,anothers were lower similarity to predicted protein from Nematostella vectensis,transcription elongation factor GreA from Bartonella quintana str.Toulouse and NM_132090 CG3446 gene product in Drosophila melanogaster from Schistosoma japonicum.These data may form a foundation for identifying recombinant antigens that can be used in the diagnosis or vaccination against clonorchiasis.
4.Hepatitis B Virus Core Protein Mediates the Upregulation of C5α Receptor 1 via NF-κB Pathway to Facilitate the Growth and Migration of Hepatoma Cells
Fanyun KONG ; Yukai TAO ; Dongchen YUAN ; Ning ZHANG ; Qi LI ; Tong YU ; Xiaoying YANG ; Delong KONG ; Xiaohui DING ; Xiangye LIU ; Hongjuan YOU ; Kuiyang ZHENG ; Renxian TANG
Cancer Research and Treatment 2021;53(2):506-527
Purpose:
C5α receptor 1 (C5ΑR1) is associated with the development of various human cancers. However, whether it is involved in the development of hepatitis B virus (HBV)–related hepatocellular carcinoma (HCC) is poorly understood. We explored the expression, biological role, and associated mechanisms of C5AR1 in HBV-related hepatoma cells.
Materials and Methods:
The expression of C5ΑR1 mediated by HBV and HBV core protein (HBc) was detected in hepatoma cells. The function of nuclear factor кB (NF-κB) pathway in HBc-induced C5AR1 expression was assessed. The roles of C5ΑR1 in the activation of intracellular signal pathways, the upregulation of inflammatory cytokines, and the growth and migration of hepatoma cells mediated by HBc, were investigated. The effect of C5α in the development of HCC mediated by C5AR1 was also measured.
Results:
C5ΑR1 expression was increased in HBV-positive hepatoma cells. Dependent on HBc, HBV enhanced the expression of C5ΑR1 at the mRNA and protein levels. Besides, HBc could promote C5ΑR1 expression via the NF-κB pathway. Based on the C5ΑR1, HBc facilitated the activation of JNK and ERK pathways and the expression and secretion of interleukin-6 in hepatoma cells. Furthermore, C5ΑR1 was responsible for enhancing the growth and migration of hepatoma cells mediated by HBc. Except these, C5α could promote the malignant development of HBc-positive HCC via C5AR1.
Conclusion
We provide new insight into the mechanisms of hepatocarcinogenesis mediated by HBc. C5ΑR1 has a significant role in the functional abnormality of hepatoma cells mediated by HBc, and might be utilized as a potential therapeutic target for HBV-related HCC.
5.Hepatitis B Virus Core Protein Mediates the Upregulation of C5α Receptor 1 via NF-κB Pathway to Facilitate the Growth and Migration of Hepatoma Cells
Fanyun KONG ; Yukai TAO ; Dongchen YUAN ; Ning ZHANG ; Qi LI ; Tong YU ; Xiaoying YANG ; Delong KONG ; Xiaohui DING ; Xiangye LIU ; Hongjuan YOU ; Kuiyang ZHENG ; Renxian TANG
Cancer Research and Treatment 2021;53(2):506-527
Purpose:
C5α receptor 1 (C5ΑR1) is associated with the development of various human cancers. However, whether it is involved in the development of hepatitis B virus (HBV)–related hepatocellular carcinoma (HCC) is poorly understood. We explored the expression, biological role, and associated mechanisms of C5AR1 in HBV-related hepatoma cells.
Materials and Methods:
The expression of C5ΑR1 mediated by HBV and HBV core protein (HBc) was detected in hepatoma cells. The function of nuclear factor кB (NF-κB) pathway in HBc-induced C5AR1 expression was assessed. The roles of C5ΑR1 in the activation of intracellular signal pathways, the upregulation of inflammatory cytokines, and the growth and migration of hepatoma cells mediated by HBc, were investigated. The effect of C5α in the development of HCC mediated by C5AR1 was also measured.
Results:
C5ΑR1 expression was increased in HBV-positive hepatoma cells. Dependent on HBc, HBV enhanced the expression of C5ΑR1 at the mRNA and protein levels. Besides, HBc could promote C5ΑR1 expression via the NF-κB pathway. Based on the C5ΑR1, HBc facilitated the activation of JNK and ERK pathways and the expression and secretion of interleukin-6 in hepatoma cells. Furthermore, C5ΑR1 was responsible for enhancing the growth and migration of hepatoma cells mediated by HBc. Except these, C5α could promote the malignant development of HBc-positive HCC via C5AR1.
Conclusion
We provide new insight into the mechanisms of hepatocarcinogenesis mediated by HBc. C5ΑR1 has a significant role in the functional abnormality of hepatoma cells mediated by HBc, and might be utilized as a potential therapeutic target for HBV-related HCC.