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Chen XL, Ge F, Wan MQ, Qi SM, Qi ZL. [Lactate promotes HMGB1 phosphorylation and release via Akt signaling pathway in gastric cancer cells HGC-27]. Zhonghua Zhong Liu Za Zhi 2023; 45:919-925. [PMID: 37968076 DOI: 10.3760/cma.j.cn112152-20220901-00590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Objective: To investigate the molecular mechanism of how lactate induces high mobility group box 1 (HMGB1) release. Methods: Gastric cancer HGC-27 cells were divided into the control group and the lactate group (The cells were treated with lactate for 6 h). The level of HMGB1 in the cell culture medium was detected by enzyme-linked immunosorbent assay (ELISA), the localization of HMGB1 was detected using laser confocal microscopy, and the nuclear translocation of HMGB1 was detected using the nucleoplasmic separation assay. The phosphorylation and acetylation levels of HMGB1 were determined by co-immunoprecipitation, and Western blot was used to measure the phosphorylation of Akt and protein kinase C (PKC). HGC-27 cells were first treated with lactate and LY294002, the inhibitor of Akt, and then the phosphorylation of HMGB1 and Akt was analyzed by co-immunoprecipitation and Western blot, respectively. The localization of HMGB1 in cells was detected by laser confocal microscopy. EdU and Transwell assays were used to detect the proliferation and migration abilities of HGC-27 cells, respectively. HGC-27 cells were then injected into the BALB/C null mice for subcutaneous tumor implantation. Mice in the lactate group were intraperitoneally injected with lactate (0.2 g/kg/2 d), while those in the control group were intraperitoneally injected with an equal amount of PBS for 20 consecutive days. ELISA was used to detect the HMGB1 levels in the blood samples taken from the medial canthus vein of the mice, while co-immunoprecipitation and Western blot were used to detect the phosphorylation of HMGB1 and Akt in tumor tissue proteins, respectively. Results: The release levels of HMGB1 in the lactate group were (2 995.00±660.91) pg/ml and (696.33±22.03) pg/ml, after lactate treatment for 6 h and 12 h, respectively, both higher than those in the control group (485.00±105.83) pg/ml (P<0.001 and P=0.028, respectively). After lactate treatment for 6 h, the relative expression of HMGB1 protein in the cytoplasm of HGC-27 cells was 1.13±0.09, higher than that of the control group (0.83±0.07, P=0.001), while the relative expression of HMGB1 in the nucleus was 0.79±0.06, lower than that of the control group (1.07±0.06, P=0.007). The phosphorylation level of HMGB1 reached 1.41±0.09, which was higher than that of the control group (0.97±0.10, P=0.031). The phosphorylation level of Akt was 11.16±0.06, higher than that of the control group (0.91±0.022, P=0.002). The phosphorylation level and nuclear translocation of HMGB1 induced by lactate decreased obviously after Akt inhibition; the proliferation and migration abilities induced by lactate were also obviously inhibited after Akt inhibition. In vivo, the HMGB1 level in the peripheral blood was (1 280.70±389.66) pg/ml in the lactate group, which was obviously higher than that in the control group (595.11±44.75) pg/ml (P=0.008), and the phosphorylation levels of HMGB1 and Akt in tumor tissues in the lactate group were obviously enhanced compared with the control group. Conclusion: Lactate induces HMGB1 release through enhancing HMGB1 phosphorylation via the Akt signaling pathway.
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Affiliation(s)
- X L Chen
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China
| | - F Ge
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - M Q Wan
- School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - S M Qi
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China
| | - Z L Qi
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China
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Lin J, Ji XJ, Wang AY, Liu JF, Liu P, Zhang M, Qi ZL, Guo DC, Bellomo R, Bagshaw SM, Wald R, Gallagher M, Duan ML. Corrigendum to "Timing of continuous renal replacement therapy in severe acute kidney injury patients with fluid overload: A retrospective cohort study" [J Crit Care. 2021 Aug; 64: 226-236]. J Crit Care 2021; 66:191. [PMID: 34274206 DOI: 10.1016/j.jcrc.2021.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- J Lin
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - X J Ji
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - A Y Wang
- The George Institute for Global Health, Newtown, UNSW, Australia; Concord Clinical School, The University of Sydney, Australia; Department of Renal Medicine, Concord Repatriation General Hospital, Australia.
| | - J F Liu
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - P Liu
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - M Zhang
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - Z L Qi
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - D C Guo
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - R Bellomo
- The George Institute for Global Health, Newtown, UNSW, Australia; Department of Intensive Care, Austin Hospital, Australia
| | - S M Bagshaw
- Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - R Wald
- Division of Nephrology, St. Michael's Hospital, University of Toronto, Li Ka Shing Knowledge Institute, Toronto, ON, Canada
| | - M Gallagher
- The George Institute for Global Health, Newtown, UNSW, Australia; Concord Clinical School, The University of Sydney, Australia; Department of Renal Medicine, Concord Repatriation General Hospital, Australia
| | - M L Duan
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China.
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Lin J, Ji XJ, Wang AY, Liu JF, Liu P, Zhang M, Qi ZL, Guo DC, Bellomo R, Bagshaw SM, Wald R, Gallagher M, Duan ML. Timing of continuous renal replacement therapy in severe acute kidney injury patients with fluid overload: A retrospective cohort study. J Crit Care 2021; 64:226-236. [PMID: 34034218 DOI: 10.1016/j.jcrc.2021.04.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 01/20/2023]
Abstract
PURPOSE We aimed to evaluate the association of early versus late initiation of Continuous renal replacement therapy (CRRT) with mortality in patients with fluid overload. METHODS This was a retrospective cohort study of patients with fluid overload (FO) treated with CRRT due to severe acute kidney injury (AKI) between January 2015 and December 2017 in a mixed medical intensive care unit of a teaching hospital in Beijing, China. Patients were divided into early (≤15 h) and late (>15 h) groups based on the median time from ICU admission to CRRT initiation. The primary outcome was all-cause mortality at day 60. Multivariable Cox model analysis was used for analysis. RESULTS The study patients were male predominant (84/150) with a mean age of 64.8 ± 16.7 years. The median FO value before CRRT initiation was 10.1% [6.2-16.1%]. The 60-day mortality rates in the early vs the late CRRT groups were 53.9% and 73%, respectively. On multivariable Cox modelling, the late initiation of CRRT was independently associated with an increased risk of death at 60 days (HR 1.75, 95% CI 1.11-2.74, p = 0.015). CONCLUSIONS Early initiation of CRRT was independently associated with survival benefits in severe AKI patients with fluid overload.
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Affiliation(s)
- J Lin
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - X J Ji
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - A Y Wang
- The George Institute for Global Health, Newtown, Australia; Concord Clinical School, The University of Sydney, Australia; Department of Renal Medicine, Concord Repatriation General Hospital, Australia.
| | - J F Liu
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - P Liu
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - M Zhang
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - Z L Qi
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - D C Guo
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China
| | - R Bellomo
- The George Institute for Global Health, Newtown, Australia; Department of Intensive Care, Austin Hospital, Australia
| | - S M Bagshaw
- Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - R Wald
- Division of Nephrology, St. Michael's Hospital, University of Toronto, Li Ka Shing Knowledge Institute, Toronto, ON, Canada
| | - M Gallagher
- The George Institute for Global Health, Newtown, Australia; Concord Clinical School, The University of Sydney, Australia; Department of Renal Medicine, Concord Repatriation General Hospital, Australia
| | - M L Duan
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, China.
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Chen ML, Qi ZL, Jin WT, Xu Z, Cheng YH, Zhou ZH. Cation exchange in a fluorescent zinc-based metal–organic framework for cadmium ion detection. CrystEngComm 2021. [DOI: 10.1039/d1ce00931a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A Zn metal–organic framework with a large aperture shows remarkable fluorescence characteristics for the detection of cadmium ions in aqueous solution and can adsorb CO2 and O2 selectively.
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Affiliation(s)
- Mao-Long Chen
- College of Chemistry and Food Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Zhen-Li Qi
- College of Chemistry and Food Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Wan-Ting Jin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Zhou Xu
- College of Chemistry and Food Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Yun-Hui Cheng
- College of Chemistry and Food Engineering, Changsha University of Science & Technology, Changsha, 410114, China
| | - Zhao-Hui Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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Guo L, Li R, Zhang YF, Qin TY, Li QS, Li XX, Qi ZL. A comparison of two sources of methionine supplemented at different levels on heat shock protein 70 expression and oxidative stress product of Peking ducks subjected to heat stress. J Anim Physiol Anim Nutr (Berl) 2017; 102:e147-e154. [PMID: 28503893 DOI: 10.1111/jpn.12722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 02/24/2017] [Indexed: 12/17/2022]
Abstract
The aim of this study was to examine the effects of different sources and levels of methionine (Met) on Heat shock proteins HSP70 expression and protein carbonylation in liver, HSP70 expression and malondialdehyde (MDA) concentration in intestine under heat stress conditions during summer. A total of 720 (4 days old) Peking ducks were placed 20 per pen into six replicates for each of the six treatments with a 2 × 3 factorial arrangement, such that two sources of Met (DL-methionine [DLM] and DL-2-hydroxy-4-methylthiobutyrate [HMTBA] were supplemented at three different levels (0.05%, 0.20%, or 0.35% on as-fed basis respectively). The experiment was divided into a starter (day 4-16) and a grower (day 17-35) period. Diet supplemented with 0.35% Met significantly up-regulated the HSP70 mRNA expression in duodenum, jejunum and ileum on day 16 and 35 as well as in liver on day 35 (p < .05) of ducks. HMTBA-supplemented diets increased the HSP70 mRNA expression in duodenum, jejunum, ileum and liver on day 35 (p < .01). An increased MDA concentration was detected in jejunum of birds in 0.35% DLM-supplemented treatment on day 16 (p < .05). And decreased protein carbonylation concentration was found in DLM-supplemented treatment on day 16 (p < .01). The birds fed with 0.35% Met supplemental diet displayed lower hepatic protein carbonylation on day 16 (p < .05). In conclusion, supplementation of 0.35% Met in the duck diet showed up-regulated HSP70 expression in small intestine and liver, which may provide new perspective to the mechanism of Met function. At the same time, DLM supplemented in diet may ameliorate oxidative status of liver, while HMTBA supplementation may partially improve the intestinal oxidative status of Peking ducks.
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Affiliation(s)
- L Guo
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - R Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Y F Zhang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - T Y Qin
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Q S Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - X X Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Z L Qi
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
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Wan HF, Chen W, Qi ZL, Peng P, Peng J. Prediction of true metabolizable energy from chemical composition of wheat milling by-products for ducks. Poult Sci 2008; 88:92-7. [PMID: 19096062 DOI: 10.3382/ps.2008-00160] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The present study was conducted to evaluate the effect of chemical composition of wheat by-products on the TME value to ducks and to establish the prediction models estimating TME. Seven representative samples were selected from 23 wheat by-products millings samples based on the neutral detergent fiber (NDF) content. According to the Sibbald method, male Cherry Valley ducks were chosen to assay the TME of 7 representative samples. Stepwise regression analysis was performed to establish the prediction equations of TME using CP, ether extract (EE), NDF, acid detergent fiber, crude fiber, and gross energy (GE) as independent variables. The NDF, CP, and DM of 23 samples of wheat by-product averaged to be 33.39 +/- 11.04%, 19.2 +/- 3.25%, 87.17 +/- 0.95%, respectively. The TME values of 7 representative samples averaged 12.02 MJ/kg, with much larger CV than GE (17.72 vs. 2.82%). The crude fiber, NDF, acid detergent fiber were highly but negatively correlated with TME (P < 0.01), in which the greatest correlation coefficient (r = -0.969) was observed between NDF and TME. No significant correlation of CP, EE, ash, and GE to TME was found among the 7 representative samples. The optimal equation in terms of R(2) from using a single chemical analysis was obtained in the total group: TME = -0.1564NDF + 17.4696 (R(2) = 0.94, P = 0.0003), and the TME prediction equation was improved by the addition of the EE and CP content to sequential analysis: TME = -0.17NDF + 0.98EE - 0.27CP + 19.31 (R(2) = 0.99, residual SD = 0.35, P < 0.01). The results of present study suggest that NDF could be used as an effective indicator for the prediction of the TME value of wheat by-products for ducks.
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Affiliation(s)
- H F Wan
- College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
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Fang ZF, Liu ZL, Dai JJ, Qian HY, Qi ZL, Ma LB, Peng J. Effects of enzyme addition on the nutritive value of broiler diets containing hulled or dehulled Chinese double-low rapeseed meals. J Anim Physiol Anim Nutr (Berl) 2008; 93:467-76. [PMID: 18547364 DOI: 10.1111/j.1439-0396.2008.00829.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An in vitro and a feeding trial was conducted to investigate the effect of fibre-degrading enzymes A (xylanase + β-glucanase), B (xylanase) and C (xylanase + cellulase) on the nutritive value of broiler diets containing either hulled (22.5% and 23.5% for 4–21 days and 22–42 days of age, respectively) or dehulled (20% and 21.5%) Chinese double-low rapeseed meals (DLRM). Overall, in vitro digestibility of dry matter (DM) or neutral digestibility fibre (NDF) did not differ (p > 0.05) because of meal types; both crude protein (CP) and NDF digestibility was improved (p < 0.05) because of addition of enzymes B or C either to hulled or dehulled DLRM diets. Birds fed dehulled DLRM diets had a higher (p < 0.05) growth rate, feed efficiency and lower (p < 0.05) feed intake than those fed hulled DLRM diets during the overall phase. Enzyme C addition to dehulled DLRM diets resulted in improved (p < 0.05) growth rate and feed efficiency during 4–21 days of age. Enzymes A and B addition elicited a positive response in feed intake and weight gain (p < 0.05), respectively, but did not affect (p > 0.05) feed efficiency. It would appear that the nutritive value of broiler diets containing Chinese DLRM could be improved by appropriate xylanase-based enzymes. Responses of broilers to fibre-degrading enzymes could be highlighted by hull removal of fed DLRM.
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Affiliation(s)
- Z F Fang
- Department of Animal Nutrition, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
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Qi ZL, Huo X, Xu XJ, Zhang B, Du MG, Yang HW, Zheng LK, Li J, Shen ZY. Relationship between HPV16/18 E6 and 53, 21WAF1, MDM2, Ki67 and cyclin D1 expression in esophageal squamous cell carcinoma: comparative study by using tissue microarray technology. Exp Oncol 2006; 28:235-40. [PMID: 17080019 DOI: pmid/17080019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
AIM To investigate the role of human papillomavirus (HPV) HPV16/18 E6 oncogene in the carcinogenesis of esophageal cell carcinoma (ESCC). MATERIALS AND METHODS Tissue microarray (TMA) block was constructed from 60 cases of paraffin-embedded ESCC tissues and pair-matched controls (adjacent normal epithelium). Immunohistochemistry (IHC) methods were applied to detect the expression of HPV16/18 E6, p53, p21(WAF1), MDM2, Ki67 and cyclin D1 proteins on TMA slides. In situ hybridization (ISH) targeting HPV gene was also used. RESULTS In ESCC samples, 18.3% (11/60) were revealed HPV16/18 E6 positive by IHC, while 40.0% (24/60) HPV positive by ISH; HPV16/18 E6 expression was significantly higher than that of control samples. In ESCC samples, the expressions of p53, p21(WAF1), Cyclin D1, MDM2 and Ki67 were recorded in 60.0% (36/60), 40.0% (24/60), 51.7% (31/60), 65.0% (39/60) and 88.3% (53/60) cases respectively, In ESCC samples, p53, MDM2 and Ki67 expression correlated with the HPV16/18 E6 expression (p less, similar 0.01), p21(WAF1) expression - with these of MDM2 and cyclin D1 (p less, similar 0.01) whilst expression of Ki67 - with ESCC grade (p less, similar 0.01). CONCLUSION HPV might be one of etiological factor of esophageal carcinoma in Shantou, China. p53, MDM2 proteins may play important roles in the pathogenesis of HPV-associated ESCC.
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Affiliation(s)
- Z L Qi
- Laboratory Center and the Key Immunopathology Laboratory of Guangdong Province, Shantou University Medical College, Shantou, 515041, PR China.
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