1.Role of fast-track recovery in pancreatic neoplasm surgery
International Journal of Surgery 2011;38(6):390-392
Fast-track recovery emphasize applicating a series of effective measures confirmed in the perioperative care of patients,the optimized combination generates synergy effect to maximize alleviating various physical and mental stress reaction in order to expedite patient recovery.Most successful example is the application of fast track colon surgery program.Its safety and effectiveness have been widely confirmed,but the report on pancreas surgery is limited.FTRP is aiming to improve medical and health work efficiency,reduce hospitalization time and hospitalization expenses,improve life quality of patients.Based on the application of FTRP in pancreatic cancer,the relation of morbidity,re-admission and peri-operative mortality rates and clinical significance are reviewed.
2.The design of anterior guidance for anterior prostheses
Journal of Practical Stomatology 2015;(6):877-881
This article systematically introduces the basic conception,classification and physiological significance of anterior guidance for anterior prostheses.A customized incisal guidance table was introduced to record and transfer the individual value of the patient to a virtual full-adjustable articulator system.The clinic effects of the individual value and average value were also compared.
3.Clinical significance of N-terminal pro-brain natriuretic peptide and D-dimer in patients with chronic obstructive pulmonary disease
Chinese Journal of Postgraduates of Medicine 2015;38(4):273-275
Objective To explore the clinical significance of serum N-terminal pro-brain natriuretic peptide (NT-proBNP) and plasma D-dimer (D-D) in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and stable chronic obstructive pulmonary disease (COPD).Methods The clinical data of 76 patients with AECOPD (AECOPD group) and 68 patients with stable COPD (stable COPD group) were analyzed retrospectively.Serum NT-proBNP,plasma D-D levels and arterial blood gas analysis were measured and compared.Results The levels of serum NT-proBNP and plasma D-D in AECOPD group were (918 ± 271) ng/L and (0.269 ±0.048) mg/L,in stable COPD group were (264 ± 32) ng/L and (0.223 ± 0.042) mg/L.The levels of serum NT-proBNP and plasma D-D in AECOPD group were significantly higher than those in stable COPD group (P < 0.01).The levels of serum NT-proBNP and plasma D-D were negatively correlated with arterial blood oxygen partial pressure (r =-0.181,P =0.030;r =-0.166,P =0.047),and were positively correlated with arterial blood carbon dioxide partial pressure (r =0.763,P < 0.01;r =0.424,P < 0.01).Conclusion Combined detection of serum NT-proBNP and plasma D-D has important clinical significance in evaluating severity of COPD,and may indicate AECOPD.
4.Pyrroloquinoline quinone promotes chondrocyte proliferation and inhibits interleukin-1beta-induced chondrocyte apoptosis
Chinese Journal of Tissue Engineering Research 2015;(15):2305-2309
BACKGROUND:Pyrroloquinoline quinone is found to accelerate Schwann cel proliferation and growth factor secretion, but there is no report addressing its role in articular cartilage and chondrocytes.
OBJECTIVE: To investigate the role of pyrroloquinoline quinone in chondrocyte proliferation and interleukin-1β-induced chondrocyte apoptosis in the articular cartilage of knee joints and to verify the protective mechanism involved.
METHODS: Chondrocytes were isolated from New Zealand white rabbits (1 month of age), digested under aseptic conditions, and cultured in DMEM/F12 in the presence of 10% fetal bovine serum to alow for proliferation until passage 2. Adherent chondrocytes were cultured in serum-free DMEM/F12 medium with 0, 6.25, 12.5, 25.0, 50.0 and 100.0 μmol/L pyrroloquinoline quinone, separately. Proliferation activity was determined by MTT at 48 hours of pyrroloquinoline quinone administration. Cel cycle was determined by flow cytometry at 30 hours after pyrroloquinoline quinone administration. Apoptosis was determined by flow cytometry folowing 24 hours of pyrroloquinoline quinone pretreatment and 15 hours of interleukin-1β induction.
RESULTS AND CONCLUSION: Pyrroloquinoline quinone enhanced chondrocyte proliferation activity, increased percentage of S phase and G2/M phase in a dose dependent manner and reached the peak when the concentration of pyrroloquinoline quinone was 12.5-25.0 μmol/L (P< 0.05). Pyrroloquinoline quinone also inhibited interleukin-1β-induced chondrocyte apoptosis in early and late stage, and 25.0 μmol/L pyrroloquinoline quinone had the best effects (P < 0.05). These findings suggest pyrroloquinoline quinone can promote chondrocyte division and proliferation, and protect the cels from interleukin-1β-induced apoptosis.
5.Inhibition of growth and metastasis of implanted human gastric cancer in nude mice by SU5416
Guofeng ZHANG ; Yuanhe WANG ; Qiang WANG
Chinese Journal of Digestion 2001;0(04):-
Objective To study the effects of angiogenesis inhibitor SU5416 on the growth and metastasis to the liver of gastric cancer and to investigate its effect on the apoptosis of gastric cancer cells. Methods Metastatic model simulating human gastric cancer was established by orthotopic implantation of histologically intact human tumor tissue into gastric wall of nude mice. Mice were randomly divided into 4 groups: control group (saline solution), 5 FU group (fluorouracil 30 mg?kg -1 ?d -1 i.p.), SU5416 group (SU5416 15 mg?kg -1 ?d -1 i.p.), and combined treatment of both 5 FU and SU5416 group. Eight weeks after implantation, the tumor weight, inhibition rates, intratumoral microvessel density (MVD), apoptotic index (AI), and the presence of metastasis were evaluated respectively after the mice were sacrificed. Results Compared with the control group, the growth of the orthotopically implanted tumor was significantly inhibited due to the reduced weight and the inhibition rate of tumor was 44.5%, 79.3%, and 84.4% respectively in mice treated with 5 FU, SU5416 and both. The incidences of liver metastases were also significantly decreased in the 5 FU group, SU5416 group, and combined group compared with those in control group (36.4%, 25.0%, and 0% vs 90.0%). The MVD was decreased significantly in the treated mice ( 14.6 ? 5.8 vs 13.1?4.7, 3.9? 1.8 , and 2.1?1.5). The AI was increased significantly in the treated mice [(3.76?2.25)% vs (6.81? 4.92 )%, (9.82?3.76)% and (17.65?9.85)%]. The growth and liver metastasis of human gastric cancer implanted in nude mice were more significantly inhibited in the SU5416 group and combined group than in control group and 5 FU group ( P
6.Effects of monosialoganglioside on adrenal medulla grafts in the rat model of Parkinson's disease
Yi QING ; Jiazheng SU ; Guofeng ZHANG
Chinese Journal of Organ Transplantation 1997;18(1):28-30
Rat's adrenal medulla(AT group)or adrenal medulla soaked with monosialogan-glioside(AGT group)were transplanted into the head of striatum of rat model of Parkinsonism.Apomorphine induced greater improverment in rotational behavior in AGT group than in AT group with significant difference.Immunocytochemical staining with Chromagranin A showed that a lot of positively stained cells were distributed in the graft area and some cells developed process in AGT group. Our results showed that the monosialoganglioside had effects of increasing the survival of chromaffin cells and inducing the cells to develop processes.
7.Inhibition of growth and metastasis of human colon cancer by SU6668 in a nude mouse model
Guofeng ZHANG ; Yuanhe WANG ; Qiang WANG
Chinese Journal of General Surgery 2001;0(07):-
ObjectiveTo study the effects of angiogenesis inhibitor SU6668 on the growth and metastasis of colon cancer in vivo. MethodsMetastatic model of human colon cancer was established by orthotopic implantation of human tumor tissue into colon wall of nude mice. Mice were randomly divided into control, 5 Fu, SU6668, and combined treatment group (both 5 Fu and SU6668 i.p.) respectively. After six weeks tumor weight, inhibition rates, intratumoral microvessel density (MVD), apoptotic index (AI) and metastasis were evaluated. ResultsCompared with control, tumor growth was significantly inhibited in mice treated respectively with 5 Fu, SU6668 and 5Fu plus SU 6668 with an inhibition rate of 0%, 42 6%, 80 9% and 87 2% respectively. MVD decreased significantly in treated groups \[(13 8?5 2)?(12 3?4 5), (2 4?1 5) and (0 9?0 5)\]. AI increased significantly in treated groups \[(3 6?2 4)%? (7 1?5 7)%, (11 9?3 9)% and (19 9?8 6)%\]. The incidences of peritoneal and liver metastases was significantly inhibited in 5 Fu, SU6668 and combined treatment group (100%? 45 5%, 16 7% and 0; 75 0%? 36 4%, 16 7% and 0). The growth and metastasis of human colon cancer implanted in nude mice were significantly inhibited in the SU6668 group and combined group than that in control group and 5 Fu group ( P
8.Establishment of orthotopic implantation tumor and metastasis model of human colon cancer in nude mice
Guofeng ZHANG ; Yuanhe WANG ; Qiang WANG
Chinese Journal of General Surgery 2000;0(11):-
Objective To establish an orthotopic implantation and metastasis model of human colon cancer in nude mice. Methods Tumor cell line SW1116 of human colon adenocarcinoma was inoculated subcutaneously into nude mice to develop implantation tumor.Histologically intact tumor tissue was then harvested and implanted to the colon wall of nude mice to set up a model similar to human colon cancer.The formation of implanted tumor rate, local tumor growth characteristics,and metastasis rates were examined. Results A 100% lymphatic metastasis rate was obtained in this model. The incidences of local lymphatic metastasis, peritoneal and liver metastases were 100%, 91.7% and 75.0% respectively.Emacication and exhaustion of the nude mice were presented in late stage of the experimentation. The median survival time of the tumor-bearing nude mice was 10 weeks. Conclusions The orthotopic implantation tumor and metastasis model provide useful tools for the study of mechanism of metastasis and its treatment of human colon cancer.
9.Mutation Analysis for Mitochondrial DNA in a Chinese Pedigree with Maternally Inherited Aminoglycoside Antibiotic-Induced Deafness
Shayan WANG ; Guofeng GAO ; Ruanzhang ZHANG
Journal of Chinese Physician 2001;0(02):-
Objective To detect mutation of mitochondrial DNA in a chinese pedgree with maternally inherited aminoglycoside antibiotic-induced deafness. Methods The mutation of mitochondrial DNA from all 18 family members of a chinese pedigree with maternally inherited aminoglycoside antibiotic-induced deafness was detected by PCR and DNA sequencing. Results Nine individuals in this pedigree carried A→G mutation at the 1555th bp of mitochondrial 125 rRNA, and the others did not have this mutation. Conclusion Mitochondrial DNA mutation may be one of major factors resulted in aminoglycoside antibiotic-induced deafness in this pedigree.
10.Development and application of a perioral force measurement system for infants with cleft lip and palate
Yaqi ZHENG ; Lixian ZHANG ; Guofeng WU
Journal of Practical Stomatology 2016;32(4):490-494
Objective:To develop a perioral force measurement system for the infants with cleft lip and palate.Methods:The peri-oral force measurement system of infant with cleft lip and palate is composed of hardware and software.The sensor is metal cantilever. The measurement ranges are 0 -20 and 0 -1 00 g/cm2 ,and the precision is 0.1 g/cm2 .The system was used in 4 cases of infants with unilateral cleft lip and palate before and after cheiloplasty.The results were analyzed by SPSS 1 9.0 software.Results:Before cheilo-plasty the perioral force of labial frenum area was (1 .79 ±0.94)g/cm2 ,that of angulus oris area of normal side and cleft side was (5. 41 ±1 .01 )g/cm2 and (3.1 2 ±1 .55)g/cm2 (P <0.05);after cheiloplasty:the perioral force of labial frenum area was (1 2.73 ±3. 51 )g/cm2 ,that of angulus oris area of normal side and cleft side was (7.64 ±1 .64)g/cm2 and (7.27 ±1 .89)g/cm2 .Conclusion:The perioral force measurement system can be used to measure the perioral force of the infants with cleft lip and palate.