Objective To discuss the acute toxicity of abamectin to several aquatic animals,it can provide reference for formulating safety concentration value of abamectin on fresh-water aquatic animals. Methods The method of changing solution was used for Cladocera crustacea with 48 h,and Allogynogenetic crucian carp fingerling (fry),Gambusia affinis,Hypophthal michthys molitrix fry,Macrobrachium nipponense,Eriocheir sinensis,Cipangopaludina chincasis with 96 h in this experiment. For the experimental animals,every kind of animal was randomly divided into 11 groups(495 animals in each),including nine treatment groups,one control group and one ethanol (hydrotropy agent) group (15 animals in each). The clinic symptoms were observed and mortalities were recorded;median-lethal concentration with 24,48,72,96 h and safety concentration were calculated. Results During the experiment,the mortalities of all animals increased with increase of time and concentration of abamectin. As for Cladocera crustacea,48 h LC50 and safety concentration were 0.000 37 and 0.000 037 mg/L,for Allogynogenetic crucian carp fry, Allogynogenetic crucian carp fingerling,Gambusia affinis,Hypophthal michthys molitrix fry,Macrobrachium nipponense, Eriocheir sinensis,Cipangopaludina chincasis,the values of 96 h LC50 were 0.018,0.06,0.08,0.02,0.52,0.25,0.57 mg/L and safety concentrations were 0.001 8,0.006,0.008,0.002,0.052,0.025,0.057 mg/L,respectively. The results showed that the toxicity of abamectin to seven fresh-water aquatic animals ranked as Cladocera crustacea,Allogynogenetic crucian carp fry,Hypophthal michthys molitrix fry,Allogynogenetic crucian carp fingerling,Gambusia affinis,Eriocheir sinensis,Macrobrachium nipponense, Cipangopaludina chincasis. Conclusion Abamectin has higher toxicity to fresh-water aquatic animals.

Objective To observe and analyze the effect of neoadjuvant chemotherapy on locally advanced non-small cell lung cancer tumor markers and lymphocyte subsets of different pathological type .Methods A total number of 40 NSCLC patients which received neoadjuvant chemotherapy and 20 normal people were selected in our study .To compare the differences of CEA ,CA-125 , CYFRA21-1 and lymphocyte subset in NSCLC pantients with adenocarcinoma or squamous cell carcinoma and the the differences of CEA ,CA-125 ,CYFRA21-1 and lymphocyte subset in patients with different clinical effect .Results (1) The CEA ,CA-125 ,CY-FRA21-1 in pantients with adenocarcinoma or squamous cell carcinoma were both higher than normal people .The CEA level in pa-tients with adenocarcinoma was higher than squamous cell carcinoma ,while the CA-125 and CYFRA21-1 in squamous cell carcino-ma were higher than adenocarcinoma .The CD3+ ,CD4+ ,CD8+ ,CD4+ /CD8+ in pantients with adenocarcinoma or squamous cell carcinoma both had obvious differences with normal people .But there were no obvious differences between patients with adenocarci-noma and squamous cell carcinoma .(2)There were 18 cases of CR+ PR while 22 cases of SD+ PD .The CA-125 and CYFRA21-1 were decreased in patients of squamous cell carcinoma with clinical effective while the CEA and CYFRA 21-1 were decreased in ade-nocarcinoma with clinical effective .The CD3+ ,CD4+ ,CD4+ /CD8+ increased and CD8+ decreased in patients of squamous cell car-cinoma or adenocarcinoma with clinical effective .Conclusion The tumor marker and lymphocyte subsets values had obvious differ-ences in adenocarcinoma and squamous cell carcinoma .Both tumor marker and lymphocyte subsets were useful in diagnosis .

Objective To study lentinan’s promotion on XELOX regimen’s curative effects on advanced gastric cancer. Method Cases with advanced gastric cancer were divided into observation group and control group according their therapy method. The curative effects, side effects, WBC, lymphocyte subsets, NK cells and quality of life were compared. Results The difference of disease control rates in two groups were not significant (P=0.091). The incidences of side effects in observation group were significantlly lower than in control group (P<0.05). The observation group’s WBC, Lym, CD 3+, CD 4+, CD 8+, NK cells and quality of life were significantly higher than in control group(P<0.05). Conclusion Lentinan could significantly promote gastric cancer patients’immunity and lessen side effects. It can promote XELOX regimen’s curative effects on gastric cancer and improve quality of life.

Objective To investigate the role of autophagy in radiation-induced death process of human esophageal squamous carcinoma Eca-109 cells.Methods Esophageal carcinoma cell line Eca-109 was divided into 6 groups of control,5 mmol/L 3-Methyladenine treatment,10 mmol/L treatment,6 Gy irradiation,irradiation + 5 mmol/L drug,and irradiation + 10 mmol/L drug.Some cells were transferred with GFP-LC3 plasmid and the changes of autophagosome were obserred.After each treatment,the expression of autophagy marker LC3B was measured by Western Blot,cell viability was detected by MTT,morphological characteristics of apoptosis cells were stained with a fluorescein of Hoechst 33342 and the percentage of apoptotic cells and cell cycle distribution were measured by flow cytometry.Clonogenic survival were used to evaluate the cell radiosensitivity.Results Autophagy level was increased after radiation,and the LC3B Ⅱ expression and LC3B Ⅱ/LC3B Ⅰ ratio were significantly decreased by autophagy inhibitor 3-Methyladenine (F =25.64,P ＜ 0.05).The number of autophagosome fluorescent foci were significantly increased in the GFP-LC3 transfected cells after radiation,but reduced by 3-Methyladenine (F =127.36,P ＜ 0.05).Compared with radiation alone group,autophagy inhibition combined with radiation significantly decreased cell viability (F =129.54,P ＜ 0.05) and colony formation,increased apoptosis and the percentage of G2/M-phase cells.Conclusions 3-Methyladenine enhances the radiosensitivity of esophageal squamous carcinoma Eca-109 cells,suggesting that inhibition of autophagy could be used as an adjuvant treatment of radiotherapy in esophageal squamous carcinoma.

Objective To determine the effect of transcription and translation in telomeric related proteins,and synergism of progressive telomere shortening and cell cycle alteration in human lung adenocarcinoma A549 cell line,which is induced by antisense tankyrase oligonucleotide(asTANKS) combinated with antisense human telomerase reverse transcriptase(ashTERT) oligonucleotide.Methods A549 cells were randomly assigned as 3 test groups: ashTERT,ashTERT + asTANKS and asTANKS,three control groups(shTERT,sTANKS and blank).With individual intervention for different hours,the effect of transcription in hTERT mRNA was evaluated by RT-PCR,and telomerase activity was tested by ELISA-PCR,tankyrase activity was tested by Western blot as well.Moreover,telomere average length was analyzed by Q-FISH,and duration of proliferation was observed by population double test.Results Transcription in hTERT mRNA and telomerase activity for 48 hrs was inhibited obviously by ashTERT,but not by asTANKS.Progressive telomere shortening in A549 cells for 48 hrs was induced by either asTANKS or ashTERT(vs control,P

Objective:To investigate the expression of MKK 4 protein in the nasopharyngeal carcinoma and its clinical significance.Methods:Immunohistochemical methods were employed to analyze MKK 4 positive expression intensity and positive cells in freshly collected nasopharyngeal carcinoma of both 90nasopharyngeal carcinoma cases and 20 chronic nasopharyngitis control.The clinical pathological characteristic were analyzed.Results:The data obtained by MKK4 immunohistochemistry showed that the MKK 4 positive rate was higher in control group than in the NPC group (95.5%vs 75.6%,P<0.05).The expression of MKK4 was related to tumor differentiation and lymph node metastasis ( P<0.05 ) , but not to gender , age, tumor volum and TNM stage ( P>0.05 ) . Conclusion:Positive rate of MKK4 protein in nasopharyngeal carcinoma tissues is lower than in chronic nasopharyngitis.MKK4 protein expressions in nasopharyngeal carcinoma tissues negatively correlated with lymph node metastasis ,clincal stage ,invasive depth ,and TTP (Time to progression),but not with age,gender,location and tumor volume.

OBJECTIVE: To investigate the association between-1304T/G polymorphism in the promoter of MKK4 gene and the susceptibility in sporadic nasopharyngeal carcinoma. METHOD: MKK4-1304T/G genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 90 NPC cases and 30 healthy controls. RESULT: The number of nasopharyngeal carcinoma patients carrying with TG+GG genotype was much higher than those of controls (82.2% vs 66.7%, χ² =10.076, P < 0.05). Analysis showed that compared with the-1304TT genotype, -1304TG heterozygous reduced risk of nasopharyngeal carcinoma 0.56 fold (95% CI = 0.164-1.178, P < 0.01) and-1304GG lower 0.58 fold (95% CI = 0.126-1.381, P < 0.01), TG+ GG genotype variation risk of nasopharyngeal carcinoma decreased 0.72 fold (95% CI = 0.105-0.753, P < 0.01). CONCLUSION MKK4 gene-1304TG genotype can reduce risk of nasopharyngeal carcinoma, and it may be an independent protection factor in sporadic nasopharyngeal carcinoma.
Carcinoma ; Genetic Predisposition to Disease ; Genotype ; Heterozygote ; Humans ; MAP Kinase Kinase 4 ; genetics ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; genetics ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Promoter Regions, Genetic

Objective:Discussion MKK4 protein expression in nasopharyngeal carcinoma and -1044 A/T polymorphism correlation.Methods:90 patients with nasopharyngeal carcinoma , MKK4 protein expression was determined by immunohistochemical staining,polymerase chain reaction-restriction fragment length polymorphism ( PCR-RFLP ) to detect the gene -1044A/T sites monocytes nucleotide polymorphism.Results:MKK4 protein expression in nasopharyngeal carcinoma (-) was 24.4%(22/90),(+) was 15.6%(14/90),(++) was 34.4%(31/90),(+++) was 25.6% (23/90).Low expression (-/+) patients with a total of 36 cases,-1044AA genotype accounted for 22 cases (61.11%),AT genotype accounted for 12 cases (33.33%),TT genotype accounted for two cases (5.56%),AT+TT gene type accounted for 14 cases (38.89%).The patients with high MKK4 expression of 54 cases,of which accounted for 38 cases of AA genotype (70.37%),AT genotype accounted with 15 cases (27.78%),TT genotype accounted for one case (1.85%),AT +TT genotype accounted for 16 cases (29.63%).Low expression and high expression of T gene mutation occurs no significant ( Z=0.323 , P=0.747 ) .Conclusion: MKK4 protein expression correlated with -1044 A/T gene promoter polymorphisms was no significant correlation .

Objective To explore the inhibitory effect and possible mechanisms of lianhuaqingwen capsules on radiation-induced acute lung injury in rats. Methods Rats were randomly divided into control group, radiation group and radiation plus lianhuaqingwen group, the control group and the radiation group rats were given 0. 9% sodium chloride solution, the radiation plus lianhuaqingwen group rats were given lianhuaqingwen 0. 9% chlorine sodium solution. HE staining was applied to test the lung tissue inflammation; quantitative RT-PCR and ELISA were used to measure the content of IL-6, TNF-α and MCP-1 in rats;immunohistochemical assay was taken to detect the infiltration of macrophage in lung tissues. Results The relative mRNA expression of IL-6, TNF-α and MCP-1 in the control, radiation model control and radiation plus Lianhuaqingwen groups were (0. 002 1±0. 000 20),(0. 006 6±0. 000 32),(0. 003 9±0. 000 22); (0. 003 7±0. 000 16),(0. 007 4±0. 000 33),(0. 005 5± 0.000 24);(0.001 4±0.000 15),(0.005 4±0.000 72),(0.003 2±0.000 17),respectively; the concentration (pg·mL-1) of IL-6,TNF-αand MCP-1 in the serum were (35. 2±10. 9),(111. 8±26. 1),(68. 2±15. 2); (229. 3±28. 5),(837. 5±57. 6), (566. 9±39. 8);(96. 85±8. 20),(314. 53±12. 76),(191. 32±10. 97),respectively; and the macrophages at high magnification field in each group were (59. 5±4. 3),(503. 9±25. 8)and (106. 2±12. 6), respectively. Lianhuaqingwen capsules significantly alleviated the lung inflammation in rats with radiation-induced acute lung injury,inhibited the accumulation of macrophage in lung tissue,reduced the expression of IL-6 and TNF-α,and decreased the content of MCP-1 in lung tissues and sera(P<0. 05). Conclusion Lianhuaqingwen capsules attenuated the lung inflammation developed in rats with radiation-induced acute lung injury through inhibiting the expression of MCP-1 and reducing the accumulation of macrophage in lung tissues.

Objective To investigate the radioprotective function of lianhuaqingwen (LHQW) in rat acute radiation-induced lung injury.Methods Totally 36 female Wistar rats were randomized into 3 groups as administered group (treated by LHQW plus radiation),radiation group irradiated with a single of 20 Gy in 6 MV X-ray by Elekta Synergy VMAT,and blank control group without radiation.Performance status (PS) was estimated during 31 d of LHQW instragastric administration.After rats being sacrificed at 1,14,28 d of LHQW adminstration,the pathomorphological changes were observed in trauma lung tissue,the cell number in BALF (Bronchoalveolar lavage fluid) was counted,the levels of TNF-α and IL-6 in serum were measured by ELISA,and TNF-α and IL-6 mRNA expressions in lung tissue were assayed by RT-PCR.Results After LHQW treatment,the PS of rat was significantly elevated with less inflammation in morphous,and the cell number in BALF was markedly decreased in compare with radiation alone group.Furthermore,the serum levels of TNF-α and IL-6 were obviously reduced (tTNF-α =7.372,2.891,tIL-6 =6.335,3.257,P ＜ 0.05) and the TNF-α and IL-6 mRNA levels in lung tissue were also decreased (tTNF-αmRNA =3.714,2.144,tIL-6mRNA =3.589,2.883,P＜0.05).Conclusions LHQW plays a protective role against acute radiation-induced lung injury in rats and the down-expressions of TNF-α and IL-6 may be involved.