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He K, Chen X, Shi Z, Shi S, Tian Q, Hu X, Song R, Bai K, Shi W, Wang J, Li H, Ding J, Geng S, Sheng X. Relationship of resting heart rate and blood pressure with all-cause and cardiovascular disease mortality. Public Health 2022; 208:80-88. [PMID: 35728416 DOI: 10.1016/j.puhe.2022.03.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 10/13/2021] [Revised: 01/21/2022] [Accepted: 03/30/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVES This study aimed to investigate associations of resting heart rate (RHR) and blood pressure (BP) with all-cause and cardiovascular disease (CVD) mortality. STUDY DESIGN A retrospective cohort study. METHODS A total of 67,028 Chinese participants aged ≥60 years were included in the analysis. RHR, systolic blood pressure (SBP), and diastolic blood pressure (DBP) were evaluated according to quartiles ([41-69, 70-74, 75-79, 80-127 beats/min], [80-119, 120-129, 130-139, 140-238 mm Hg], and [40-70, 71-79, 80-84, 85-133 mm Hg]). Cox proportional hazard models were used to estimate the hazard ratios (HRs) and 95% confidence intervals (CIs) of all-cause and CVD mortality with RHR, SBP, and DBP. Restricted cubic splines were used to evaluate the dose-response association. RESULTS During the 361,975 person-year follow-up, 9326 deaths were recorded, of which 5039 deaths were due to CVD. The risk of all-cause mortality was increased by 25% with the quartiles four vs quartile one of RHR (HR [95% CI]:1.25 [1.17-1.33]), and CVD mortality was increased by 32% (HR [95% CI]: 1.32 [1.22-1.44]). Similar results were observed when comparing the quartiles four vs quartile one of SBP with the risk of all-cause and CVD mortality (HRs [95% CIs]: 1.14 [1.07, 1.22] and 1.23 [1.12. 1.34]) and DBP with the risk of all-cause and CVD mortality (HRs [95% CIs]: 1.17 [1.11. 1.24] and 1.36 [1.26. 1.47]). We found linear associations of RHR, SBP, and DBP with all-cause and CVD mortality (Pnon-linearity >0.05), except for the approximately J-shaped association between DBP and all-cause mortality (Pnon-linearity = 0.008). There was a significant interaction of RHR and SBP with all-cause and CVD mortality (Pinteraction <0.05). CONCLUSIONS RHR and BP increased the risk of all-cause and CVD mortality, especially fast RHR combined with high SBP.
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Affiliation(s)
- K He
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - X Chen
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Z Shi
- Department of Pharmacy, Zhengzhou People's Hospital, Zhengzhou, Henan, People's Republic of China
| | - S Shi
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China.
| | - Q Tian
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - X Hu
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - R Song
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - K Bai
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - W Shi
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - J Wang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - H Li
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - J Ding
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - S Geng
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - X Sheng
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, People's Republic of China
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Bai K, Liao X, Zhang Q, Jia X, Liu S. Survey of Learning Based Single Image Super-Resolution Reconstruction Technology. Pattern Recognit Image Anal 2021. [DOI: 10.1134/s1054661820040045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Hong B, He J, Fan C, Tang C, Le Q, Bai K, Niu S, Xiao M. Synthesis and Biological Evaluation of Analogues of Butyrolactone I as PTP1B Inhibitors. Mar Drugs 2020; 18:md18110526. [PMID: 33114258 PMCID: PMC7690921 DOI: 10.3390/md18110526] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 12/30/2022] Open
Abstract
In recent years, a large number of pharmacologically active compounds containing a butenolide functional group have been isolated from secondary metabolites of marine microorganisms. Butyrolactone I was found to be produced by Aspergillus terreus isolated from several marine-derived samples. The hypoglycemic activity of butyrolactone I has aroused our great interest. In this study, we synthesized six racemic butenolide derivatives (namely BL-1–BL-6) by modifying the C-4 side chain of butyrolactone I. Among them, BL-3 and BL-5 improved the insulin resistance of HepG2 cells and did not affect the proliferation of RIN-m5f cell line, which indicated the efficacy and safety of BL-3 and BL-5. Furthermore, BL-3, BL-4, BL-5, and BL-6 displayed a significant protein tyrosine phosphatase 1B (PTP1B) inhibitory effect, while the enantiomers of BL-3 displayed different 50% percentage inhibition concentration (IC50) values against PTP1B. The results of molecular docking simulation of the BLs and PTP1B explained the differences of biological consequences observed between the enantiomers of BL-3, which supported BLs as PTP1B inhibitors, and also indicated that the chirality of C-4 might influence the inhibitory effect of the BLs. Our findings provide a novel strategy for the development of butyrolactone derivatives as potential PTP1B inhibitors for the treatment of type 2 diabetes mellitus.
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Affiliation(s)
- Bihong Hong
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (C.T.); (Q.L.); (K.B.); (S.N.)
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
- Correspondence: (B.H.); (M.X.); Tel.: +86-0592-2195265 (B.H.); +86-0592-6162300 (M.X.)
| | - Jianlin He
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (C.T.); (Q.L.); (K.B.); (S.N.)
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
| | - Chaochun Fan
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Chao Tang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (C.T.); (Q.L.); (K.B.); (S.N.)
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
| | - Qingqing Le
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (C.T.); (Q.L.); (K.B.); (S.N.)
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
| | - Kaikai Bai
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (C.T.); (Q.L.); (K.B.); (S.N.)
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
| | - Siwen Niu
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (C.T.); (Q.L.); (K.B.); (S.N.)
- Technical Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China;
| | - Meitian Xiao
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
- Correspondence: (B.H.); (M.X.); Tel.: +86-0592-2195265 (B.H.); +86-0592-6162300 (M.X.)
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4
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Mallipattu SK, Jawa R, Moffitt R, Hajagos J, Fries B, Nachman S, Gan TJ, Saltz M, Saltz J, Kaushansky K, Skopicki H, Abell-Hart K, Chaudhri I, Deng J, Garcia V, Gayen S, Kurc T, Bolotova O, Yoo J, Dhaliwal S, Nataraj N, Sun S, Tsai C, Wang Y, Abbasi S, Abdullah R, Ahmad S, Bai K, Bennett-Guerrero E, Chua A, Gomes C, Griffel M, Kalogeropoulos A, Kiamanesh D, Kim N, Koraishy F, Lingham V, Mansour M, Marcos L, Miller J, Poovathor S, Rubano J, Rutigliano D, Sands M, Santora C, Schwartz J, Shroyer K, Spitzer S, Stopeck A, Talamini M, Tharakan M, Vosswinkel J, Wertheim W, Mallipattu SK, Jawa R, Moffitt R, Hajagos J, Fries B, Nachman S, Gan TJ, Saltz M, Saltz J, Kaushansky K, Skopicki H, Abell-Hart K, Chaudhri I, Deng J, Garcia V, Gayen S, Kurc T, Bolotova O, Yoo J, Dhaliwal S, Nataraj N, Sun S, Tsai C, Wang Y, Abbasi S, Abdullah R, Ahmad S, Bai K, Bennett-Guerrero E, Chua A, Gomes C, Griffel M, Kalogeropoulos A, Kiamanesh D, Kim N, Koraishy F, Lingham V, Mansour M, Marcos L, Miller J, Poovathor S, Rubano J, Rutigliano D, Sands M, Santora C, Schwartz J, Shroyer K, Spitzer S, Stopeck A, Talamini M, Tharakan M, Vosswinkel J, Wertheim W. Geospatial Distribution and Predictors of Mortality in Hospitalized Patients With COVID-19: A Cohort Study. Open Forum Infect Dis 2020; 7:ofaa436. [PMID: 33117852 PMCID: PMC7543608 DOI: 10.1093/ofid/ofaa436] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 09/09/2020] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND The global coronavirus disease 2019 (COVID-19) pandemic offers the opportunity to assess how hospitals manage the care of hospitalized patients with varying demographics and clinical presentations. The goal of this study was to demonstrate the impact of densely populated residential areas on hospitalization and to identify predictors of length of stay and mortality in hospitalized patients with COVID-19 in one of the hardest hit counties internationally. METHODS This was a single-center cohort study of 1325 sequentially hospitalized patients with COVID-19 in New York between March 2, 2020, to May 11, 2020. Geospatial distribution of study patients' residences relative to population density in the region were mapped, and data analysis included hospital length of stay, need and duration of invasive mechanical ventilation (IMV), and mortality. Logistic regression models were constructed to predict discharge dispositions in the remaining active study patients. RESULTS The median age of the study cohort (interquartile range [IQR]) was 62 (49-75) years, and more than half were male (57%) with history of hypertension (60%), obesity (41%), and diabetes (42%). Geographic residence of the study patients was disproportionately associated with areas of higher population density (r s = 0.235; P = .004), with noted "hot spots" in the region. Study patients were predominantly hypertensive (MAP > 90 mmHg; 670, 51%) on presentation with lymphopenia (590, 55%), hyponatremia (411, 31%), and kidney dysfunction (estimated glomerular filtration rate < 60 mL/min/1.73 m2; 381, 29%). Of the patients with a disposition (1188/1325), 15% (182/1188) required IMV and 21% (250/1188) developed acute kidney injury. In patients on IMV, the median (IQR) hospital length of stay in survivors (22 [16.5-29.5] days) was significantly longer than that of nonsurvivors (15 [10-23.75] days), but this was not due to prolonged time on the ventilator. The overall mortality in all hospitalized patients was 15%, and in patients receiving IMV it was 48%, which is predicted to minimally rise from 48% to 49% based on logistic regression models constructed to project disposition in the remaining patients on ventilators. Acute kidney injury during hospitalization (odds ratioE, 3.23) was the strongest predictor of mortality in patients requiring IMV. CONCLUSIONS This is the first study to collectively utilize the demographics, clinical characteristics, and hospital course of COVID-19 patients to identify predictors of poor outcomes that can be used for resource allocation in future waves of the pandemic.
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Affiliation(s)
| | - S K Mallipattu
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - R Jawa
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - R Moffitt
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Hajagos
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - B Fries
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Nachman
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - T J Gan
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Saltz
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Saltz
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Kaushansky
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - H Skopicki
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Abell-Hart
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - I Chaudhri
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Deng
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - V Garcia
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Gayen
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - T Kurc
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - O Bolotova
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Yoo
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Dhaliwal
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - N Nataraj
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Sun
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - C Tsai
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - Y Wang
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Abbasi
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - R Abdullah
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Ahmad
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Bai
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - E Bennett-Guerrero
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - A Chua
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - C Gomes
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Griffel
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - A Kalogeropoulos
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - D Kiamanesh
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - N Kim
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - F Koraishy
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - V Lingham
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Mansour
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - L Marcos
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Miller
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Poovathor
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Rubano
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - D Rutigliano
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Sands
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - C Santora
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Schwartz
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Shroyer
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Spitzer
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - A Stopeck
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Talamini
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Tharakan
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Vosswinkel
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - W Wertheim
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S K Mallipattu
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - R Jawa
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - R Moffitt
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Hajagos
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - B Fries
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Nachman
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - T J Gan
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Saltz
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Saltz
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Kaushansky
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - H Skopicki
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Abell-Hart
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - I Chaudhri
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Deng
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - V Garcia
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Gayen
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - T Kurc
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - O Bolotova
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Yoo
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Dhaliwal
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - N Nataraj
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Sun
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - C Tsai
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - Y Wang
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Abbasi
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - R Abdullah
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Ahmad
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Bai
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - E Bennett-Guerrero
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - A Chua
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - C Gomes
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Griffel
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - A Kalogeropoulos
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - D Kiamanesh
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - N Kim
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - F Koraishy
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - V Lingham
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Mansour
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - L Marcos
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Miller
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Poovathor
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Rubano
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - D Rutigliano
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Sands
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - C Santora
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Schwartz
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - K Shroyer
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - S Spitzer
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - A Stopeck
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Talamini
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - M Tharakan
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - J Vosswinkel
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
| | - W Wertheim
- Renaissance School of Medicine at Stony Brook University, Stony Brook University, Stony Brook, New York, USA
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5
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He J, Hong B, Lu R, Zhang R, Fang H, Huang W, Bai K, Sun J. Separation of saturated fatty acids from docosahexaenoic acid-rich algal oil by enzymatic ethanolysis in tandem with molecular distillation. Food Sci Nutr 2020; 8:2234-2241. [PMID: 32405380 PMCID: PMC7215222 DOI: 10.1002/fsn3.1462] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/10/2020] [Accepted: 01/17/2020] [Indexed: 01/15/2023] Open
Abstract
Algal oil, rich in docosahexaenoic acid (DHA) and an environmentally sustainable source of ω-3 fatty acids, is receiving increasing attention. In the present study, a novel approach combining ethanolysis with a 1,3-specific immobilized lipase (Lipozyme® TL IM) and molecular distillation was investigated to increase the DHA content of algal oil. Algal oil with a 45.94% DHA content was mixed with ethanol, pumped into a column filled with Lipozyme® TL IM, and then circulated for 4 hr at room temperature. The ethanol was then recycled by vacuum distillation. At an evaporator temperature of 150°C, the residue was separated by molecular distillation into a heavy component enriched with DHA glycerides (in the form of triglyceride (TG), diglyceride (DG), and monoglyceride (MG)) and a light component enriched with palmitic acid (PA) and DHA ethyl ester (EE). As a result, 76.55% of the DHA from the algal oil was present in the heavy component, whose DHA content was 70.27%. DHA-MG was collected in the heavy component mostly in the form of 1-MG. Lipozyme® TL IM appeared to specifically target PA rather than DHA at the sn-1(3) position. The Lipozyme® TL IM allowed 90.03% of the initial DHA yield to be retained after seven reaction cycles. Therefore, an eco-friendly and simple method for increasing the DHA content in algal oil has been developed.
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Affiliation(s)
- Jianlin He
- Third Institute of OceanographyMinistry of Natural ResourcesXiamenChina
- Technical Innovation Center for Utilization of Marine Biological ResourcesMinistry of Natural ResourcesXiamenChina
| | - Bihong Hong
- Third Institute of OceanographyMinistry of Natural ResourcesXiamenChina
- Technical Innovation Center for Utilization of Marine Biological ResourcesMinistry of Natural ResourcesXiamenChina
| | - Rong Lu
- Department of Laboratory MedicineThe First Affiliated Hospital of Xiamen UniversityXiamenChina
| | - Ruoqi Zhang
- School of PharmacyChengdu University of Traditional Chinese MedicineChengduChina
| | - Hua Fang
- Third Institute of OceanographyMinistry of Natural ResourcesXiamenChina
- Technical Innovation Center for Utilization of Marine Biological ResourcesMinistry of Natural ResourcesXiamenChina
| | - Wenwen Huang
- Third Institute of OceanographyMinistry of Natural ResourcesXiamenChina
- Technical Innovation Center for Utilization of Marine Biological ResourcesMinistry of Natural ResourcesXiamenChina
| | - Kaikai Bai
- Third Institute of OceanographyMinistry of Natural ResourcesXiamenChina
- Technical Innovation Center for Utilization of Marine Biological ResourcesMinistry of Natural ResourcesXiamenChina
| | - Jipeng Sun
- Zhejiang Marine Development Research InstituteZhoushanChina
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6
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Bai K, Hong B, He J, Huang W. Antioxidant Capacity and Hepatoprotective Role of Chitosan-Stabilized Selenium Nanoparticles in Concanavalin A-Induced Liver Injury in Mice. Nutrients 2020; 12:nu12030857. [PMID: 32210138 PMCID: PMC7146609 DOI: 10.3390/nu12030857] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/17/2020] [Accepted: 03/20/2020] [Indexed: 12/28/2022] Open
Abstract
Selenium nanoparticles (SeNPs) have attracted wide attention for their use in nutritional supplements and nanomedicine applications. However, their potential to protect against autoimmune hepatitis has not been fully investigated, and the role of their antioxidant capacity in hepatoprotection is uncertain. In this study, chitosan-stabilized SeNPs (CS-SeNPs) were prepared by means of rapid ultra-filtration, and then their antioxidant ability and free-radical scavenging capacity were evaluated. The hepatoprotective potential of a spray-dried CS-SeNPs powder against autoimmune liver disease was also studied in the concanavalin A (Con A)-induced liver injury mouse model. CS-SeNPs with size of around 60 nm exhibited acceptable oxygen radical absorbance capacity and were able to scavenge DPPH, superoxide anion, and hydroxyl radicals. The CS-SeNPs powder alleviated Con A-caused hepatocyte necrosis and reduced the elevated levels of serum alanine transaminase, aspartate transaminase, and lactic dehydrogenase in Con A-treated mice. These results suggest that the CS-SeNPs powder protected the mice from Con-A-induced oxidative stress in the liver by retarding lipid oxidation and by boosting the activities of superoxide dismutase, glutathione peroxidase, and catalase, partly because of its ability to improve Se retention. In conclusion, SeNPs present potent hepatoprotective potential against Con A-induced liver damage by enhancing the redox state in the liver; therefore, they deserve further development.
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Affiliation(s)
- Kaikai Bai
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (B.H.); (J.H.); (W.H.)
- Technology Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
- Correspondence: ; Tel.: +86-592-2195309
| | - Bihong Hong
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (B.H.); (J.H.); (W.H.)
- Technology Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Jianlin He
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (B.H.); (J.H.); (W.H.)
- Technology Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Wenwen Huang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (B.H.); (J.H.); (W.H.)
- Technology Innovation Center for Exploitation of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
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7
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Bai K, Hong B, Tan R, He J, Hong Z. Selenium Nanoparticles-Embedded Chitosan Microspheres and Their Effects Upon Alcohol-Induced Gastric Mucosal Injury in Rats: Rapid Preparation, Oral Delivery, and Gastroprotective Potential of Selenium Nanoparticles. Int J Nanomedicine 2020; 15:1187-1203. [PMID: 32110016 PMCID: PMC7036990 DOI: 10.2147/ijn.s237089] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/26/2020] [Indexed: 12/11/2022] Open
Abstract
Background Selenium (Se) is an indispensable trace element required for animals and human beings, whereas Se-deficiency can accelerate the development of acute gastric injury induced by over-consumption of alcohol. Selenium nanoparticles (SeNPs), as a special Se-supplement with favorable properties and unique bioactivities, are expected to play a passive role in gastroprotection. To the best of our knowledge, the gastroprotective potential of SeNPs is unknown and also, a rapid preparation of orally stable SeNPs available for prospective commercial application in the clinic is needed. Thus, SeNPs-embedded chitosan microspheres (SeNPs-CM) were developed to deliver SeNPs, and their gastroprotective potential was evaluated. Results Herein, a rapid, eco-friendly and economic preparation process, composed of synthesis of SeNPs decorated by chitosan (CS), purification of CS-SeNPs by ultra-filtration (UF) and spray-drying of the purified CS-SeNPs, was introduced to prepare SeNPs-CM. The uniformly distributed SeNPs with a nanosize range of 60 nm were loaded into CS-microspheres, and they could be released from the microspheres in gastric conditions. In addition, SeNPs-CM were safer than selenite in terms of Se dose, with a LD50 of around 8-fold of that of selenite, and it could efficiently enhance the Se retention in Se-deficient Wistar rats. Furthermore, SeNPs-CM pre-treatment might significantly attenuate the ethanol-induced gastric mucosal damage, based on histological evaluation. It might be partly attributed to the systematic antioxidant activities of SeNPs-CM, reflected by the reduction in lipid peroxidation, the augmentation in antioxidant enzymatic activity as well as decreasing aggressive nitric oxides (NO). Conclusion SeNPs-CM could be taken into consideration as a prospective Se-supplement for the oral delivery of SeNPs, with prominent gastroprotective effect against ethanol-induced mucosal injury.
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Affiliation(s)
- Kaikai Bai
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Republic of China.,Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
| | - Bihong Hong
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Republic of China.,Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
| | - Ran Tan
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Republic of China.,Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
| | - Jianlin He
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Republic of China.,Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
| | - Zhuan Hong
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, Republic of China.,Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
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8
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Hong B, He J, Le Q, Bai K, Chen Y, Huang W. Combination Formulation of Tetrodotoxin and Lidocaine as a Potential Therapy for Severe Arrhythmias. Mar Drugs 2019; 17:md17120685. [PMID: 31817438 PMCID: PMC6949965 DOI: 10.3390/md17120685] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 11/30/2019] [Accepted: 12/03/2019] [Indexed: 11/16/2022] Open
Abstract
Severe arrhythmias-such as ventricular arrhythmias-can be fatal, but treatment options are limited. The effects of a combined formulation of tetrodotoxin (TTX) and lidocaine (LID) on severe arrhythmias were studied. Patch clamp recording data showed that the combination of LID and TTX had a stronger inhibitory effect on voltage-gated sodium channel 1.5 (Nav1.5) than that of either TTX or LID alone. LID + TTX formulations were prepared with optimal stability containing 1 μg of TTX, 5 mg of LID, 6 mg of mannitol, and 4 mg of dextran-40 and then freeze dried. This formulation significantly delayed the onset and shortened the duration of arrhythmia induced by aconitine in rats. Arrhythmia-originated death was avoided by the combined formulation, with a decrease in the mortality rate from 64% to 0%. The data also suggests that the anti-arrhythmic effect of the combination was greater than that of either TTX or LID alone. This paper offers new approaches to develop effective medications against arrhythmias.
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Affiliation(s)
- Bihong Hong
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (Q.L.); (K.B.); (Y.C.); (W.H.)
- Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
- Correspondence: ; Tel.: +86-0592-2195265
| | - Jianlin He
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (Q.L.); (K.B.); (Y.C.); (W.H.)
- Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Qingqing Le
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (Q.L.); (K.B.); (Y.C.); (W.H.)
- Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Kaikai Bai
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (Q.L.); (K.B.); (Y.C.); (W.H.)
- Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
| | - Yongqiang Chen
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (Q.L.); (K.B.); (Y.C.); (W.H.)
- College of Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Wenwen Huang
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (J.H.); (Q.L.); (K.B.); (Y.C.); (W.H.)
- Technical Innovation Center for Utilization of Marine Biological Resources, Ministry of Natural Resources, Xiamen 361005, China
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9
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Träber N, Uhlmann K, Girardo S, Kesavan G, Wagner K, Friedrichs J, Goswami R, Bai K, Brand M, Werner C, Balzani D, Guck J. Polyacrylamide Bead Sensors for in vivo Quantification of Cell-Scale Stress in Zebrafish Development. Sci Rep 2019; 9:17031. [PMID: 31745109 PMCID: PMC6864055 DOI: 10.1038/s41598-019-53425-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/23/2019] [Indexed: 11/09/2022] Open
Abstract
Mechanical stress exerted and experienced by cells during tissue morphogenesis and organ formation plays an important role in embryonic development. While techniques to quantify mechanical stresses in vitro are available, few methods exist for studying stresses in living organisms. Here, we describe and characterize cell-like polyacrylamide (PAAm) bead sensors with well-defined elastic properties and size for in vivo quantification of cell-scale stresses. The beads were injected into developing zebrafish embryos and their deformations were computationally analyzed to delineate spatio-temporal local acting stresses. With this computational analysis-based cell-scale stress sensing (COMPAX) we are able to detect pulsatile pressure propagation in the developing neural rod potentially originating from polarized midline cell divisions and continuous tissue flow. COMPAX is expected to provide novel spatio-temporal insight into developmental processes at the local tissue level and to facilitate quantitative investigation and a better understanding of morphogenetic processes.
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Affiliation(s)
- N Träber
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, 01069, Dresden, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47/49, 01307, Dresden, Germany
| | - K Uhlmann
- Chair of Continuum Mechanics, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - S Girardo
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47/49, 01307, Dresden, Germany
- Center for Regenerative Therapies Dresden, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Fetscherstr. 105, 01307, Dresden, Germany
- Max Planck Institute for the Science of Light, Staudtstraße 2, 91058, Erlangen, Germany
| | - G Kesavan
- Center for Regenerative Therapies Dresden, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Fetscherstr. 105, 01307, Dresden, Germany
| | - K Wagner
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47/49, 01307, Dresden, Germany
| | - J Friedrichs
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, 01069, Dresden, Germany
| | - R Goswami
- Center for Regenerative Therapies Dresden, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Fetscherstr. 105, 01307, Dresden, Germany
- Max Planck Institute for the Science of Light, Staudtstraße 2, 91058, Erlangen, Germany
| | - K Bai
- Center for Regenerative Therapies Dresden, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Fetscherstr. 105, 01307, Dresden, Germany
| | - M Brand
- Center for Regenerative Therapies Dresden, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Fetscherstr. 105, 01307, Dresden, Germany
| | - C Werner
- Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Str. 6, 01069, Dresden, Germany
| | - D Balzani
- Chair of Continuum Mechanics, Ruhr-Universität Bochum, Universitätsstraße 150, 44801, Bochum, Germany.
| | - J Guck
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47/49, 01307, Dresden, Germany.
- Max Planck Institute for the Science of Light, Staudtstraße 2, 91058, Erlangen, Germany.
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10
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Chen J, Li M, Yi R, Bai K, Wang G, Tan R, Sun S, Xu N. Electrodialysis Extraction of Pufferfish Skin ( Takifugu flavidus): A Promising Source of Collagen. Mar Drugs 2019; 17:E25. [PMID: 30621157 PMCID: PMC6356396 DOI: 10.3390/md17010025] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 12/12/2018] [Accepted: 12/27/2018] [Indexed: 01/12/2023] Open
Abstract
Collagen is widely used in drugs, biomaterials, foods, and cosmetics. By-products of the fishing industry are rich sources of collagen, which can be used as an alternative to collagen traditionally harvested from land mammals. However, commercial applications of fish-based collagen are limited by the low efficiency, low productivity, and low sustainability of the extraction process. This study applied a new technique (electrodialysis) for the extraction of Takifugu flavidus skin collagen. We found electrodialysis to have better economic and environmental outcomes than traditional dialysis as it significantly reduced the purification time and wastewater (~95%) while maintaining high extraction yield (67.3 ± 1.3 g/100 g dry weight, p < 0.05). SDS-PAGE, amino acid composition analysis, and spectrophotometric characterization indicated that electrodialysis treatment retained the physicochemical properties of T. flavidus collagen. Heavy metals and tetrodotoxin analyses indicated the safety of T. flavidus collagen. Notably, the collagen had similar thermal stability to calf skin collagen, with the maximum transition temperature and denaturation temperature of 41.8 ± 0.35 and 28.4 ± 2.5 °C, respectively. All evidence suggests that electrodialysis is a promising technique for extracting collagen in the fishing industry and that T. flavidus skin collagen could serve as an alternative source of collagen to meet the increasing demand from consumers.
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Affiliation(s)
- Junde Chen
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Min Li
- Plants for Human Health Institutes, North Carolina State University, Kannapolis, NC 28081, USA.
| | - Ruizao Yi
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Kaikai Bai
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Guangyu Wang
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Ran Tan
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Shanshan Sun
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Nuohua Xu
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, The Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
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11
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Chen J, Liu Y, Wang G, Sun S, Liu R, Hong B, Gao R, Bai K. Processing Optimization and Characterization of Angiotensin-Ι-Converting Enzyme Inhibitory Peptides from Lizardfish ( Synodus macrops) Scale Gelatin. Mar Drugs 2018; 16:md16070228. [PMID: 29973522 PMCID: PMC6071053 DOI: 10.3390/md16070228] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/25/2018] [Accepted: 06/29/2018] [Indexed: 12/17/2022] Open
Abstract
Hypertension can cause coronary heart disease. Synthetic angiotensin-converting enzyme (ACE) inhibitors are effective antihypertensive drugs but often cause side effects. The aim of this study was to prepare potential ACE inhibitors from scales. Gelatin was extracted from lizardfish scales. Then, scale gelatin was enzymolyzed to prepare ACE inhibitory peptides using response surface methodology. Proteolytic conditions after optimization were as follows: pH 7.0, enzyme substrate ratio 3.2%, temperature 47 °C, and proteolysis lasting 2 h and 50 min. The experimental ACE inhibitory activity under optimal conditions was 86.0 ± 0.4%. Among the 118 peptides identified from gelatin hydrolysates, 87.3% were hydrophilic and 93.22% had a molecular weight <2000 Da. Gelatin peptides had high stability upon exposure to high temperature and pH as well as gastrointestinal tract enzymes. Gelatin peptides showed an antihypertensive effect in spontaneously hypertensive rats at a dosage of 2 g/kg in the long-term experiments. A new ACE inhibitory peptide was isolated from gelatin hydrolysates, and was identified as AGPPGSDGQPGAK with an IC50 value of 420 ± 20 μM. In this way, ACE inhibitory peptides derived from scale gelatin have the potential to be used as healthy ACE-inhibiting drug raw materials.
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Affiliation(s)
- Junde Chen
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Ying Liu
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Guangyu Wang
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Shanshan Sun
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Rui Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China.
| | - Bihong Hong
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Ran Gao
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
| | - Kaikai Bai
- Marine Biological Resource Comprehensive Utilization Engineering Research Center of the State Oceanic Administration, the Third Institute of Oceanography of the State Oceanic Administration, Xiamen 361005, China.
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12
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Hong B, Sun J, Zheng H, Le Q, Wang C, Bai K, He J, He H, Dong Y. Effect of Tetrodotoxin Pellets in a Rat Model of Postherpetic Neuralgia. Mar Drugs 2018; 16:E195. [PMID: 29874779 PMCID: PMC6025269 DOI: 10.3390/md16060195] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 05/23/2018] [Accepted: 06/01/2018] [Indexed: 12/11/2022] Open
Abstract
Postherpetic neuralgia (PHN) is nerve pain caused by a reactivation of the varicella zoster virus. Medications are used to reduce PHN but their use is limited by serious side effects. Tetrodotoxin (TTX) is a latent neurotoxin that can block neuropathic pain, but its therapeutic index is only 3⁻5 times with intravenous or intramuscular injection. Therefore, we prepared oral TTX pellets and examined their effect in a rat model of PHN induced by resiniferatoxin (RTX). Oral TTX pellets were significantly effective at preventing RTX-induced mechanical and thermal allodynia, and similar to pregabalin. Moreover, oral administration of TTX pellets dose-dependently inhibited RTX-induced PHN compared with intramuscular administration of TTX injection. We also studied the pharmacokinetic profile of TTX pellets. Our results showed that the blood concentration of TTX reached a maximum plasma concentration (Cmax) at around 2 h, with an elimination half-life time (t1/2) of 3.23 ± 1.74 h after intragastric administration. The median lethal dose (LD50) of TTX pellets was 517.43 μg/kg via oral administration to rats, while the median effective dose (ED50) was approximately 5.85 μg/kg, and the therapeutic index was 88.45. Altogether, this has indicated that oral TTX pellets greatly enhance safety when compared with TTX injection.
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Affiliation(s)
- Bihong Hong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Jipeng Sun
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Hongzhi Zheng
- School of pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - Qingqing Le
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Changsen Wang
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China.
| | - Kaikai Bai
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Jianlin He
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Huanghuang He
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Yanming Dong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
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13
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Bai K, Hong B, Hong Z, Sun J, Wang C. Selenium nanoparticles-loaded chitosan/citrate complex and its protection against oxidative stress in D-galactose-induced aging mice. J Nanobiotechnology 2017; 15:92. [PMID: 29262862 PMCID: PMC5738782 DOI: 10.1186/s12951-017-0324-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 11/27/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Selenium (Se) is an indispensable trace element required for animals and humans, and extra Se-supplement is necessary, especially for those having Se deficiency. Recently, selenium nanoparticles (SeNPs), as a special form of Se supplement, have attracted worldwide attention due to their distinguished properties and excellent bioactivities. In this present study, an eco-friendly and economic way to prepare stable SeNPs was introduced. SeNPs were synthesized in the presence of chitosan (CTS) and then embedded into chitosan/citrate gel, generating selenium nanoparticles-loaded chitosan/citrate complex (SeNPs-C/C). Additionally, the clinical potential of SeNPs-C/C was evaluated by using D-galactose (D-gal)-induced aging mice model. RESULTS SeNPs in high uniform with an average diameter of around 50 nm were synthesized in the presence of chitosan, and reversible ionic gelation between chitosan and citrate was utilized to load SeNPs. Subsphaeroidal SeNPs-C/C microspheres of 1-30 μm were obtained by spay-drying. Single SeNPs were physically separated and embedded inside SeNPs-C/C microparticles, with excellent stability and acceptable release. Acute fetal test showed SeNPs-C/C was safer than selenite, with a median lethal dose (LD50) of approximately 4-fold to 11-fold of that of selenite. Oral administration of SeNPs-C/C remarkably retarded the oxidative stress of D-gal in Kunming mice by enhancing the activity of antioxidase, as evidenced by its significant protection of the growth, liver, Se retention and antioxidant bio-markers of mice against D-gal. CONCLUSIONS The design of SeNPs-C/C opens a new path for oral delivery of SeNPs with excellent stability, energy-conservation and environment-friendliness. SeNPs-C/C, as a novel supplement of Se, could be further developed to defend the aging process induced by D-gal.
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Affiliation(s)
- Kaikai Bai
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, People's Republic of China. .,Engineering Research Center of Marine Biological Resource Comprehensive Utilization, State Oceanic Administration, Xiamen, 361005, People's Republic of China.
| | - Bihong Hong
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, People's Republic of China.,Engineering Research Center of Marine Biological Resource Comprehensive Utilization, State Oceanic Administration, Xiamen, 361005, People's Republic of China
| | - Zhuan Hong
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, People's Republic of China.,Engineering Research Center of Marine Biological Resource Comprehensive Utilization, State Oceanic Administration, Xiamen, 361005, People's Republic of China
| | - Jipeng Sun
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, People's Republic of China.,Engineering Research Center of Marine Biological Resource Comprehensive Utilization, State Oceanic Administration, Xiamen, 361005, People's Republic of China
| | - Changsen Wang
- Third Institute of Oceanography, State Oceanic Administration, Xiamen, 361005, People's Republic of China
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He J, Bai K, Hong B, Zhang F, Zheng S. Docosahexaenoic acid attenuates carbon tetrachloride-induced hepatic fibrosis in rats. Int Immunopharmacol 2017; 53:56-62. [PMID: 29035816 DOI: 10.1016/j.intimp.2017.09.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 06/18/2017] [Revised: 09/15/2017] [Accepted: 09/15/2017] [Indexed: 02/07/2023]
Abstract
Fish oil containing docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) has been reported to exert beneficial health effects, including hepatoprotection. However, the effect of DHA alone has not been well studied, and the mechanism is not fully understood. In the present study, we reported the protective effect of DHA on carbon tetrachloride (CCl4) induced hepatic fibrosis. Compared with the control group, the CCl4 group showed hepatic damage as evidenced by histological changes and elevation in serum transaminase activity, fibrosis, inflammation and oxidative stress levels. These pathophysiological changes were attenuated by chronic DHA supplementation. The anti-fibrotic effect of DHA was accompanied by reductions in gene and protein expression of α-smooth muscle actin (α-SMA), fibronectin, and collagen in the liver tissue. DHA also attenuated CCl4-induced elevation of lipid peroxidation (LPO) and decrease of glutathione (GSH)/oxidized GSH (GSSG) ratio. The upregulated inflammatory cytokines tumor necrosis factor (TNF)-α, interferon (IFN)-γ and interleukin (IL)-6 by CCl4 were also ameliorated by DHA. Peroxisome proliferator-activated receptor (PPAR)-γ upregulation and type I and II receptors for transforming growth factor (TGF)-β (Tβ-RI and Tβ-RII) and platelet-derived growth factor (PDGF)-β receptor (PDGF-βR) downregulation on both mRNA and protein levels were observed by DHA treatment compared to CCl4 group. Moreover, in vitro study showed that DHA inhibited HSC activation, being associated with elevating PPARγ level and reducing the phosphorylation levels of Smad2/3 and ERKs, which are downstream intermediates of TGFβ and PDGF receptors, respectively. Taken together, the hepatoprotective, anti-inflammatory and anti-fibrotic effects of DHA appeared to be multifactorial. Further, one of the mechanisms of the anti-fibrotic effect of chronic DHA supplementation is probably through PPARγ signaling to interrupt TGFβ/Smad and PDGF/ERK pathways in HSCs.
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Affiliation(s)
- Jianlin He
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029, PR China; Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, PR China
| | - Kaikai Bai
- Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, PR China
| | - Bihong Hong
- Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, PR China
| | - Feng Zhang
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Shizhong Zheng
- Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029, PR China.
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Abstract
Selenium nanoparticles (SeNPs), as a special form of selenium (Se) supplement, have attracted worldwide attention due to their favorable properties and unique bioactivities. Herein, an eco-friendly and economic way to prepare stable SeNPs is introduced. SeNPs were synthesized in aqueous chitosan (CTS) and then embedded into CTS microspheres by spray-drying, forming selenium nanoparticles-loaded chitosan microspheres (SeNPs-M). The physicochemical properties including morphology, elemental state, size distribution and surface potential were investigated. Institute of Cancer Research mice were used as model animal to evaluate the bioactivities of SeNPs-M. Trigonal-phase SeNPs of ~35 nm were synthesized, and SeNPs-M physically embedding those SeNPs were successfully prepared. Amazingly, acute toxicity test indicated that SeNPs-M were much safer than selenite in terms of Se dose, with a LD50 of around 18-fold of that of selenite. In addition, SeNPs-M possessed powerful antioxidant activities, as evidenced by a dramatic increase of both Se retention and the levels of glutathione peroxidase, superoxide dismutase and catalase. The design of SeNPs-M can offer a new way for further development of SeNPs with a higher efficacy and better biosafety. Thus, SeNPs-M may be a potential candidate for further evaluation as an Se supplement with antioxidant properties and be used against Se deficiency in animals and human beings.
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Affiliation(s)
- Kaikai Bai
- Third Institute of Oceanography.,Engineering Research Center of Marine Biological Resource, Comprehensive Utilization, State Oceanic Administration, Xiamen, People's Republic of China
| | - Bihong Hong
- Third Institute of Oceanography.,Engineering Research Center of Marine Biological Resource, Comprehensive Utilization, State Oceanic Administration, Xiamen, People's Republic of China
| | - Jianlin He
- Third Institute of Oceanography.,Engineering Research Center of Marine Biological Resource, Comprehensive Utilization, State Oceanic Administration, Xiamen, People's Republic of China
| | - Zhuan Hong
- Third Institute of Oceanography.,Engineering Research Center of Marine Biological Resource, Comprehensive Utilization, State Oceanic Administration, Xiamen, People's Republic of China
| | - Ran Tan
- Third Institute of Oceanography.,Engineering Research Center of Marine Biological Resource, Comprehensive Utilization, State Oceanic Administration, Xiamen, People's Republic of China
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Hong B, Chen H, Han J, Xie Q, He J, Bai K, Dong Y, Yi R. A Study of 11-[³H]-Tetrodotoxin Absorption, Distribution, Metabolism and Excretion (ADME) in Adult Sprague-Dawley Rats. Mar Drugs 2017; 15:md15060159. [PMID: 28574462 PMCID: PMC5484109 DOI: 10.3390/md15060159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 05/19/2017] [Accepted: 05/25/2017] [Indexed: 11/16/2022] Open
Abstract
Tetrodotoxin (TTX) is a powerful sodium channel blocker that in low doses can safely relieve severe pain. Studying the absorption, distribution, metabolism and excretion (ADME) of TTX is challenging given the extremely low lethal dose. We conducted radiolabeled ADME studies in Sprague-Dawley rats. After a single dose of 6 μg/(16 μCi/kg) 11-[³H]TTX, pharmacokinetics of plasma total radioactivity were similar in male and female rats. Maximum radioactivity (5.56 ng Eq./mL) was reached in 10 min. [³H]TTX was below detection in plasma after 24 h. The area under the curve from 0 to 8 h was 5.89 h·ng Eq./mL; mean residence time was 1.62 h and t½ was 2.31 h. Bile secretion accounted for 0.43% and approximately 51% of the dose was recovered in the urine, the predominant route of elimination. Approximately 69% was recovered, suggesting that hydrogen tritium exchange in rats produced tritiated water excreted in breath and saliva. Average total radioactivity in the stomach, lungs, kidney and intestines was higher than plasma concentrations. Metabolite analysis of plasma, urine and feces samples demonstrated oxidized TTX, the only identified metabolite. In conclusion, TTX was rapidly absorbed and excreted in rats, a standard preclinical model used to guide the design of clinical trials.
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Affiliation(s)
- Bihong Hong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Hui Chen
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Jiacai Han
- Department of Inspection and Quarantine of Goods, Pingtan Entry-Exit Inspection & Quarantine Bureau of P.R.C, Pingtan 350400, China.
| | - Quanling Xie
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Jianlin He
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Kaikai Bai
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Yanming Dong
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China.
| | - Ruizao Yi
- Engineering Research Center of Marine Biological Resource Comprehensive Utilization, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
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17
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Bai K, Liu CJ, Fu YQ, Xu F. [Application of improved regional citrate anticoagulation in continuous hemofiltration in children]. Zhonghua Er Ke Za Zhi 2017; 55:334-337. [PMID: 28482382 DOI: 10.3760/cma.j.issn.0578-1310.2017.05.005] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To investigate the application of regional citrate anticoagulation with calcium hemofiltration basic solution in continuous hemofiltration in children. Method: The clinical data of 18 patients with citrate anticoagulation in continuous hemofiltration in children, excluding the hepatic failure and septic shock cases, were analyzed retrospectively, from September 2015 to August 2016 in Intensive Care Unit of the Children's Hospital of Chongqing Medical University.The commercial calcium hemofiltration basic solution was used as displacement liquid . The blood gas analysis, electrolyte, four coagulation tests during the treatment and the corresponding relations of quantity of blood flow(QB), quantity of citrate flow(QCi), quantity of sodium bicarbonate flow(QSB), quantity of calcium flow(QCa), quantity of filtered solution flow (Qf) were monitored. Meanwhile, the blood gas analysis, electrolyte, four coagulation tests, useful life of filter, bleeding and clotting events internal and external before, during and after the treatments were monitored, too. And the common complications of citrate anticoagulation, such as hypocalcaemia, metabolic alkalosis, citrate accumulation and hypernatremia were observed. Result: Continuous hemofiltration was applied in 18 patients for 734.5 hours, and the average useful life of filter was (25±11)h.There was no obvious clotting event. There were 168 groups of datum of the blood gas analysis, electrolyte, four coagulation tests during the treatment and the relationships of QB, QCi, QSB, QCa, Qf had been collected. The relationships of the initial parameter settings of QB, QCi, QSB, QCa and Qf were concluded as QCi=1.8×QB, QCa=0.12×QB, QSB=0.01×Qf . There were 150 times(89.3%)of extracorporeal ionized calcium(iCa(E)(2+)) and 162 times(96.4%) of intracorporal ionized calcium(iCa(I)(2+)) reached the anticoagulation target. Although all the comparisons of Na(+) ((136.2±4.1)vs.(138.2±2.4)vs.(138.5±3.9)mmol/L), iCa(2+) ((1.07±0.11)vs.(1.21±0.12)vs.(1.17±0.09)mmol/L), HCO(3)(-) ((22±4)vs.(28±5)vs. (26±4)mmol/L) among before, during and after treatment had significant difference(F=6.414, 18.950, 19.151; P=0.002, 0.000, 0.000). Each mean parameter was within the nearly normal range, except that the HCO(3)(-) increased slightly. High HCO(3)(-) was the most common complications, which happened 87 times (51.8%) during the treatment and 11 cases(37.9%) after the treatment. There was none with refractory hypocalcemia and total ionized calcium(TCa(2+) )/iCa(2+) above 2.5, which hints the accumulation of citrate. Conclusion: The commercialized displacement liquid containing calcium can be used in RCA-CHF in children safely and simply.
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Affiliation(s)
- K Bai
- Intensive Care Unit, the Children's Hospital, Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing; Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing 400014, China
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Chen S, Chen H, Xie Q, Hong B, Chen J, Hua F, Bai K, He J, Yi R, Wu H. Rapid isolation of high purity pepsin-soluble type I collagen from scales of red drum fish (Sciaenops ocellatus). Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.07.027] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Chen H, Di KQ, Hao EY, Ye M, Zha QC, Li LH, Bai K, Huang RL. Effects of exogenous melatonin and photoperiod on sexual maturation in pullets. J Anim Physiol Anim Nutr (Berl) 2015; 100:46-52. [DOI: 10.1111/jpn.12337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 03/31/2015] [Indexed: 11/30/2022]
Affiliation(s)
- H. Chen
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
| | - K.-Q. Di
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
- Hebei University; Baoding Hebei China
| | - E.-Y. Hao
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
| | - M. Ye
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
| | - Q.-C. Zha
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
| | - L.-H. Li
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
| | - K. Bai
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
| | - R.-L. Huang
- College of Animal Science and Technology; Agricultural University of Hebei; Baoding Hebei China
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Abstract
AIMS To investigate the microbicidal mechanisms of high-power microwave (2.0 kW) irradiation on Bacillus subtilis and to determine the effect of this procedure on the ultrastructure of the cell wall. METHODS AND RESULTS We performed viability test, examined cells using transmission electron microscopy (TEM), and measured the release of intracellular proteins and nucleic acids. The inactivation rate of B. subtilis by 2.0-kW microwave irradiation was higher than that of a domestic microwave (0.5 kW). Few proteins were released from either microwaved or boiled cells. However, the leakage of nucleic acids from 2.0-kW-microwaved cells was significantly higher than that of 0.5-kW-microwaved or boiled cells. Therefore, we examined ultrastructural alterations of microwaved or boiled cells to analyse the pattern of release of cytoplasmic contents. Although boiled cells did not show any ultrastructural changes on TEM, 2.0-kW-microwaved cells showed disruption of the cell wall. CONCLUSION The microbicidal mechanisms of 2.0-kW microwave irradiation include damage to the microbial cell wall, breakage of the genomic DNA, and thermal coagulation of cytoplasmic proteins. SIGNIFICANCE AND IMPACT OF THE STUDY TEM images showed that the cytoplasmic protein aggregation and cell envelope damage by microwave irradiation were different from the ultrastructural changes observed after boiling.
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Affiliation(s)
- S-Y Kim
- Department of Microbiology and Cancer Research Institute, College of Medicine, Chungnam National University, Daejeon, Korea
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Hai Y, Zou D, Ma H, Zhao J, Shao S, Bai K, Peng J. [Surgical treatment of single level unstable degeneration with foraminal stenosis]. Zhonghua Wai Ke Za Zhi 2000; 38:607-9. [PMID: 11832120] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVES Lumbar spine single level unstable degeneration with foraminal stenosis was treated with unilateral decompression, disc excision, posterolateral interbody fusion utilizing single BAK cage and count-lateral facet joint screw fixation. The short-term and mid-term clinical results were evaluated. METHODS There were thirty patients (13 male, 17 female) with an average age of 46.5 years. From posterior approach, all patients underwent unilateral decompression, disc excision, interbody fusion with posterolateral inserted single BAK cage, and count-lateral facet joint screw fixation. RESULTS All patients underwent surgery safely without severe complications occurred such as infection and neurological damages. The average follow-up time was 12 months (6 - 18 months) with complete relief of symptoms. Solid fusion was achieved in all but 2 patients at final follow-up. 90% of the patients obtained successful clinical outcome. CONCLUSIONS Complete decompression of the neural foramen can relief the symptoms, and interbody fusion utilizing threaded cage can restore the height of disc space and withstand axial loading of the spine. Addition of the facet joint fixation increased the postoperative segment stability and enhances solid fusion. With less invasive and preservation of part of the posterior elements of the lumbar spine and the solid fusion achieved, we consider it a sound procedure for the treatment of single level unstable degeneration with foraminal stenosis of lumbar spine. Long-term follow-up results needs to be observed.
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Affiliation(s)
- Y Hai
- Department of Orthopaedic, 306th Hospital, People's Liberation Army, Beijing 100101, China
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Bai K. The definition of death: the Japanese attitude and experience. Transplant Proc 1990; 22:991-2. [PMID: 2349728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- K Bai
- Faculty of Medicine, Kitasato University, Sagamiharashi, Japan
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23
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Bai K. [Legal aspects of the problems concerning life and death and the position of the nurse]. Kangogaku Zasshi 1972; 36:728-36. [PMID: 4625947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Ueda H, Sakakibara S, Sasamoto H, Okinaka S, Bai K. [Round table discussion: determination of death, information for clinicians]. Naika 1969; 23:870-87. [PMID: 4897013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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