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Objective:To investigate the expressions and significances of autophagy-related genes Beclin-1, LC3 and p62 in esophageal squamous cell carcinoma (ESCC).Methods:The clinical data of 112 patients with primary ESCC who underwent surgery at the 81st Group Army Hospital of Chinese PLA from January 2015 to December 2016 were retrospectively analyzed. Immunohistochemistry was used to examine the expressions of Beclin-1, p62 and LC3 proteins in 112 ESCC tissues and 31 adjacent normal esophageal mucosa tissues. Furthermore, the expressions of the above three autophagy-related markers in ESCC and the relationship between their expressions and the clinicopathological characteristics of patients were analyzed.Results:The positive expression rates of Beclin-1, LC3 and p62 in ESCC tissues were 32.14% (36/112), 37.50% (42/112) and 63.39% (71/112), The positive expression rates of Beclin-1, LC3 and p62 in adjacent normal esophageal mucosa tissues were 61.29% (19/31), 64.52% (20/31) and 32.26% (10/31), and the differences were statistically significant ( χ2 values ??were 8.715, 7.216 and 9.584, all P < 0.01). The positive expression rates of Beclin-1 and LC3 in ESCC were lower than those in adjacent normal esophageal mucosa tissues, and the positive expression rate of p62 in ESCC was higher than that in adjacentnormal esophageal mucosa tissues. In ESCC patients, the expression of Beclin-1 was related to histological grade, infiltration depth, TNM staging and lymph node metastasis (all P < 0.05); the expression of LC3 was related to infiltration depth and TNM staging (both P < 0.01); the expression of p62 was related to lymph node metastasis ( P < 0.01). In ESCC, the expression of LC3 was positively correlated with the expression of Beclin-1 ( r = 0.731, P = 0.001), and negatively correlated with the expression of p62 ( r = -0.215, P = 0.023). Conclusions:Autophagy plays a certain role in the occurrence and development of ESCC. Combined detection of autophagy-related genes Beclin-1, p62 and LC3 can assist clinical diagnosis and guide follow-up comprehensive treatment.
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Objective To investigate the expression of TRIM28 and p16 in esophageal squamous cell car-cinoma(ESCC)and explore the possible correlation with them and clinicopathological characteristics. Methods The expression level of TRIM28 and p16 were measured by immunohistochemistry S-P in 136 cases with ESCC and 37 cases with normal esophageal mucosa,selected from the First Affiliated Hospital of Hebei North University De-partment of Pathology.The relationship between them and the clinical-pathological features was also analyzed.The localization of TRIM28 and p16 protein in ESCC was detected by immunofluorescence. Results(1)The positive rates of TRIM28 and p16 in ESCC were 91.2%and 32.4%,respectively,whereas in normal esophageal mucosa the corresponding rates were 24% and 57%,respectively.(2)Immunofluorescence results showed that TRIM28 and p16 protein were all mainly distributed in the nucleus of ESCC.(3)The abnormal expression of TRIM28 and p16 protein were all related to the invasion depth,TNM staging and lymph node metastasis in ESCC(P < 0.05).(4) The expression of TRIM28 was negatively correlated to the expression of p16 in ESCC(r =-0.284,P = 0.001). Conclusions The abnormal expression of TRIM28 and p16 may have synergistic effect on the initiation and devel-opment of ESCC.Co-detection of the expression of them may be useful for diagnosis of ESCC and guiding the clini-cal therapy.
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Objective To study the expression of ASPP2 and P16INK4a in esophageal carcinoma and their relationship to the apoptosis and related clinicopathological characteristics. Methods Immunohistochemistry S-P method was used to examine the expression of ASPP2 and P16INK4a in the pathological specimens of 112 esophageal carcinoma cases and 31 cases of normal esophageal mucosa. TUNEL was also employed to detect the rate of apopto-sis in 37 esophageal carcinoma cases and 12 cases of normal esophageal mucosa. Results The difference between the expression of ASPP2 and P16INK4a in esophageal carcinoma and normal esophageal mucosa was statistically signif-icant(P < 0.05). Their abnormal expressions were all related to lymph node metastasis and differentiation degree (P < 0.05). The difference between the positive rate of apoptosis in esophageal carcinoma and normal esophageal mucosa was statistically significant(P < 0.05). The abnormal expression of ASPP2 and P16INK4a was all related to apoptosis in esophageal carcinoma. Conclusions The different expression of ASPP2 and P16INK4a may cooperatively play a role in differentiation degree ,lymph nodes metastasis and apoptosis in esophageal carcinoma. Co-examina-tion of them may be useful for the diagnosis and guiding the clinical treatment in esophageal carcinoma.
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Objective To study the expression of ASPP2 and P16INK4a in esophageal carcinoma and their relationship to the apoptosis and related clinicopathological characteristics. Methods Immunohistochemistry S-P method was used to examine the expression of ASPP2 and P16INK4a in the pathological specimens of 112 esophageal carcinoma cases and 31 cases of normal esophageal mucosa. TUNEL was also employed to detect the rate of apopto-sis in 37 esophageal carcinoma cases and 12 cases of normal esophageal mucosa. Results The difference between the expression of ASPP2 and P16INK4a in esophageal carcinoma and normal esophageal mucosa was statistically signif-icant(P < 0.05). Their abnormal expressions were all related to lymph node metastasis and differentiation degree (P < 0.05). The difference between the positive rate of apoptosis in esophageal carcinoma and normal esophageal mucosa was statistically significant(P < 0.05). The abnormal expression of ASPP2 and P16INK4a was all related to apoptosis in esophageal carcinoma. Conclusions The different expression of ASPP2 and P16INK4a may cooperatively play a role in differentiation degree ,lymph nodes metastasis and apoptosis in esophageal carcinoma. Co-examina-tion of them may be useful for the diagnosis and guiding the clinical treatment in esophageal carcinoma.
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ObjectiveTo observe the influence of lipopolysaccharide (LPS) on collagen metabolism of normal human skin fibroblasts and its biological role in the formation of hypertrophic scar.Methods Fibroblasts were isolated and cultured in vitro,and then exposed to different doses of LPS (0.005,0.01,0.05,0.1,0.5,1.0 μg/ml) from E.coli.055:B5 respectively.The expression of proccllagen type Ⅰ,Ⅲand collagenase mRNAs was tested by RT -PCR.Fibroblasts from hypertrophic scar tissue obtained from the same patients in the same culture passage were used as control.ResultsCompared with control group,the expression of procollagen typeⅠ,Ⅲ mRNAs in normal skin fibroblasts increased (0.323 ± 0.041,0.303 ± 0.063,0.391 ± 0.071,0.344 ± 0.086,0.488 ± 0.059,0.401 ± 0.087,0.616 ± 0.107,0.434 ±0.084,0.823 ±0.092,0.542 ± 0.082),while the expression of collagenase mRNAs of normal skin fibroblasts depressed(0.598 ± 0.068,0.556 ± 0.049,0.441 ± 0.043,0.372 ± 0.083,0.260 ± 0.027 ).When LPS was set to the concentration of 0.005 μg/ml,it showed a concentration dependent manner.However,when the concentration of LPS was set to 0.5 μg/ml,the expression of procollagen type Ⅰ,Ⅲ and collagenase mRNAs of normal skin fibroblasts began to decrease (0.451 ± 0.063,0.374 ± 0.072,0.360 ± 0.062).When the concentration of LPS was set to 1.0 μg/ml,the expression of procollagen type Ⅰ,Ⅲ mRNAs (0.162 ± 0.025,0.171 ± 0.061 )were inhibited and the expression of collagenase mRNAs began to increase (0.444 ±0.114).When the concentration of LPS was set to 0.1 μg/ml,the expression of procollagen type Ⅰ,Ⅲ and collagenase mRNAs of normal skin fibroblasts(0.823 ±0.092,0.542 ±0.082,0.260 ±0.027)was similar to that of hypertrophic scar tissue fibroblasts(0.829 ±0.049,0.569 ±0.038,0.277 ±0.059).ConclusionsThis result supported that LPS may be an important factor in collagen metabolism of normal skin fibroblasts and it plays an important role in hypertrophic scar formation.
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Objective To observe the influence of lipopolysaccharide (LPS) on the cell cycle and the mRNAs expression of procollagen type Ⅰ , Ⅲ of normal human skin fibroblasts. Methods Purified dermal fibroblasts were exposed to different doses of LPS(0. 005 ～ 1.0 μg/ml) from E. coli. Then the cell cycle of fibroblasts at logarithmic stage at day 7 after LPS administration was assayed with flow cytometry.The expression of procollagen type Ⅰ , Ⅲ and collagenase mRNAs was tested by RT-PCR. Results The percentage of S phase cells in cell cycle of normal human skin fibroblasts increased when LPS concentrations were changed from 0. 005 to 0. 1 μg/ml, and the increase showed a concentration dependent manner. However, when the concentration of LPS was 0. 5 μg/ml, the percentage of S phase cells began to decrease, but still higher than normal control. When LPS concentration reached 1.0 μg/ml, the percentage of S phase cells were lower than normal control. The expression of procollagen type Ⅰ , Ⅲ mRNAs of normal skin fibroblasts increased when LPS was challenged to the concentration of 0. 005 μg/ml, and the influence showed a concentration dependent manner. However, when the concentration of LPS was 0. 5 μg/ml, the influence of LPS on the expression of procollagen type Ⅰ , Ⅲ of normal skin fibroblasts began to decrease.When the concentration of LPS reached 1.0 μg/ml, the expression of procollagen type Ⅰ , Ⅲ mRNAs were inhibited. Conclusions LPS promoted the proliferation and collagen synthesis of normal human skin fibroblasts within a certain range of low doses, while high doses of LPS might inhibit the proliferation and collagen synthesis of normal human skin fibroblasts.
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Objective To explore the relationships among pulmonary function,DVH and acute radiation pneumonitis after three-dimensional conformal radiation treatment in patients with non-small-cell lung cancer.MethodsPulmonary function tests were conducted on 68 inoperable patients (male 42,female 26,median age 52,KPS≥80) before and after three months radiotherapy respectively.After 3 months of follow-up,radiation pneumonitis were graded,and V20,V30 and MLD were derived from dose volume histogram (DVH).ResultsAll patients were treated with radiotherapy at the irradiation dose of 60～70Gy.Acute radiation pneumonitis occurred in 24 patients with 11 Grade Ⅰ,7 Grade Ⅱ,3 Grade Ⅲ,3 Grade Ⅳ.There were no significant difference between the pre-irradiation and the three months after irradiation for FVC (P＞0.05).But there were significant different between pre-irradiation and three months after irradiation for FEV1.0 and DLCO (P＜0.05).V20,V30 and MLD were observed in patients treated with high radiation pneumonitis.ConclusionsThere were close relationships among pulmonary function,DVH and radiation pneumonitis in patients with non-small cell lung cancer.
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Objective To observe the effect of Yiqi Huexue Recipe on the expression of TGF-β1 and TNF-α on serum and lung of rots with radiation-induced lung injury in different radiation time,and discuss the preventative and curative effect and mechanisms of Yiqi Huoxue Recipe.Methods 66 Wistar rats were randomly allocated into irradiation with Yiqi Huoxue Recipe-treated group(A group)irradiation group(B group),and normal control group(C group).The first two groups were irradiated at right hemithorax with a dose of 30 Gy/6 fractions(in 6 weeks).The levels of TGF-β1,and TNF-α on rat serum and lung were measured by ELISA and immunohistochemistry at the end of the 4th,6th,8th,12th,and 26th week after the first irradiation.Results TGF-β1,and TNF-α level on rats serum and lung in irradiation group showed an increase from the 4th week after the first irradiation,peaking at the 12th week,and descending at the 26th week.In A group,the levels of TGF-β1 and TNF-α were significantly lower from the 4th week than those of B group.Conclusions Yiqi Huoxue Recipe could inhibit the excretion of TGF-β1,and TNF-α and might play an important role in the prevention and curation of radiation-induced lung injury,which might be related to inhibiting the expression of TGF-β1 and TNF-α.
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Objective To observe the effect of Yiqi Huoxue Recipe on the expression of TGF-?1 and ?-IFN in rats with radiation-induced lung injury in different radiation time, and discuss the prevention and curative effect of Yiqi Huoxue Recipe and its possible action mechanism. Methods One hundred and twenty Wistar rats were randomly allocated into irradiation group (n =30), irradiation with Yiqi Huoxue Recipe-treated group (n =30), irradiation with ambroxol-treated group (n =30) and normal control group (n =6). The former three groups were irradiated at right hemithorax with a dose of 30 Gy (5 Gy per week). Animals were followed for 26 weeks after the first irradiation. The levels of serum TGF-?1 and ?-IFN of 6 rats in each group were assayed by ELISA at the end of 4th, 6th, 8th, 12th and 26th week after the first irradiation. Results In Yiqi Huoxue Recipe-treated group, the levels of serum TGF-?1 were significantly lower from the 4th week than that of the irradiation group (P0.05). Conclusion Yiqi Huoxue Recipe can inhibit the excretion of TGF-?1 and promote the excretion of ?-IFN. It suggested that Yiqi Huoxue Recipe might play an important role in the prevention and curation of radiation-induced lung injury.
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0.05). The pulmonary function in M3 after radiotherapy were lower than that in M1 after radiotherapy of control group (P