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Kim Y, Lee D, Seo Y, Jung HG, Jang JW, Park D, Kim I, Kim J, Lee G, Hwang KS, Kim SH, Lee SW, Lee JH, Yoon DS. Caco-2 cell-derived biomimetic electrochemical biosensor for cholera toxin detection. Biosens Bioelectron 2023; 226:115105. [PMID: 36746024 DOI: 10.1016/j.bios.2023.115105] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 12/30/2022] [Accepted: 01/24/2023] [Indexed: 01/30/2023]
Abstract
Cholera is a highly contagious and lethal waterborne disease induced by an infection with Vibrio cholerae (V. cholerae) secreting cholera toxin (CTx). Cholera toxin subunit B (CTxB) from the CTx specifically binds with monosialo-tetra-hexosyl-ganglioside (GM1) found on the exterior cell membrane of an enterocyte. Bioinspired by the pathological process of CTx, we developed an electrochemical biosensor with GM1-expressing Caco-2 cell membrane (CCM) on the electrode surface. Briefly, the electrode surface was functionalized with CCM using the vesicle fusion method. We determined the CTxB detection performances of Caco-2 cell membrane-coated biosensor (CCB) using electrochemical impedance spectroscopy (EIS). the CCB had an excellent limit of detection of ∼11.46 nM and a detection range spanning 100 ng/mL - 1 mg/mL. In addition, the CCB showed high selectivity against various interfering molecules, including abundant constituents of intestinal fluid and various bacterial toxins. The long-term stability of the CCBs was also verified for 3 weeks using EIS. Overall, the CCB has excellent potential for practical use such as point-of-care and cost-effective testing for CTxB detection in developing countries.
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Affiliation(s)
- Yonghwan Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Dongtak Lee
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Center for Nanomedicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, 02115, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Youngjun Seo
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Hyo Gi Jung
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Jae Won Jang
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Dongsung Park
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Insu Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea
| | - Jaeheung Kim
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea
| | - Gyudo Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, South Korea; Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong, 30019, South Korea
| | - Kyo Seon Hwang
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Seung-Hyun Kim
- School of Engineering, Brown University, Providence, RI, 02912, USA
| | - Sang Won Lee
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Department of Electrical Engineering and Computer Science, University of California, Irvine, CA, 92697, USA.
| | - Jeong Hoon Lee
- Department of Electrical Engineering, Kwangwoon University, Seoul, 01897, South Korea.
| | - Dae Sung Yoon
- School of Biomedical Engineering, Korea University, Seoul, 02841, South Korea; Interdisciplinary Program in Precision Public Health, Korea University, Seoul, 02841, South Korea; Astrion Inc, Seoul, 02841, South Korea.
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Faruk M, Ibrahim S, Adamu A, Rafindadi AH, Ukwenya Y, Iliyasu Y, Adamu A, Aminu SM, Shehu MS, Ameh DA, Mohammed A, Ahmed SA, Idoko J, Ntekim A, Suleiman AM, Shah KZ, Adoke KU. An analysis of dietary fiber and fecal fiber components including pH in rural Africans with colorectal cancer. Intest Res 2018; 16:99-108. [PMID: 29422804 PMCID: PMC5797278 DOI: 10.5217/ir.2018.16.1.99] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/18/2017] [Accepted: 09/03/2017] [Indexed: 01/08/2023] Open
Abstract
Background/Aims Colorectal cancer (CRC) is now a major public health problem with heavy morbidity and mortality in rural Africans despite the lingering dietary fiber-rich foodstuffs consumption. Studies have shown that increased intake of dietary fiber which contribute to low fecal pH and also influences the activity of intestinal microbiota, is associated with a lowered risk for CRC. However, whether or not the apparent high dietary fiber consumption by Africans do not longer protects against CRC risk is unknown. This study evaluated dietary fiber intake, fecal fiber components and pH levels in CRC patients. Methods Thirty-five subjects (CRC=21, control=14), mean age 45 years were recruited for the study. A truncated food frequency questionnaire and modified Goering and Van Soest procedures were used. Results We found that all subjects consumed variety of dietary fiber-rich foodstuffs. There is slight preponderance in consumption of dietary fiber by the control group than the CRC patients. We also found a significant difference in the mean fecal neutral detergent fiber, acid detergent fiber, hemicellulose, cellulose and lignin contents from the CRC patients compared to the controls (P<0.05). The CRC patients had significantly more fecal pH level than the matched apparently healthy controls (P=0.017). Conclusions The identified differences in the fecal fiber components and stool pH levels between the 2 groups may relate to CRC incidence and mortality in rural Africans. There is crucial need for more hypothesis-driven research with adequate funding on the cumulative preventive role of dietary fiber-rich foodstuffs against colorectal cancer in rural Africans “today.”
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Affiliation(s)
- Mohammed Faruk
- Department of Pathology, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Sani Ibrahim
- Department of Biochemistry, Ahmadu Bello University Faculty of Sciences, Zaria, Nigeria
| | - Ahmed Adamu
- Department of Surgery, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Surgery Zaria, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Abdulmumini Hassan Rafindadi
- Department of Pathology, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Yahaya Ukwenya
- Department of Surgery, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Surgery Zaria, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Yawale Iliyasu
- Department of Pathology, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Abdullahi Adamu
- Department of Radiotherapy, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Radiotherapy, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Surajo Mohammed Aminu
- Department of Haematology and Blood Transfusion, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Haematology and Blood Transfusion, Ahmadu Bello University Teaching Hospital, Shika Zaria, Nigeria
| | - Mohammed Sani Shehu
- Department of Pathology, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Danladi Amodu Ameh
- Department of Biochemistry, Ahmadu Bello University Faculty of Sciences, Zaria, Nigeria
| | - Abdullahi Mohammed
- Department of Pathology, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Saad Aliyu Ahmed
- Department of Pathology, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - John Idoko
- Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
| | - Atara Ntekim
- Department of Radiation Oncology, University of Ibadan, Ibadan, Nigeria.,Department of Radiation Oncology, University College Hospital, Ibadan, Nigeria
| | - Aishatu Maude Suleiman
- Department of Haematology and Blood Transfusion, Ahmadu Bello University Faculty of Medicine, Zaria, Nigeria.,Department of Haematology and Blood Transfusion, Ahmadu Bello University Teaching Hospital, Shika Zaria, Nigeria
| | - Khalid Zahir Shah
- Department of Biomedical Science, University of Wolverhampton, Wolverhampton, UK
| | - Kasimu Umar Adoke
- Department of Pathology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
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Nakaji S, Ishiguro S, Iwane S, Ohta M, Sugawara K, Sakamoto J, Fukuda S. The prevention of colon carcinogenesis in rats by dietary cellulose is greater than the promotive effect of dietary lard as assessed by repeated endoscopic observation. J Nutr 2004; 134:935-9. [PMID: 15051850 DOI: 10.1093/jn/134.4.935] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We developed a method which we used in the current study to observe the rat colon endoscopically. Our goal was to evaluate the entire course in the development of experimental large bowel tumors through serial observations in the same rat. We compared the effects of dietary lard and cellulose on rat colon tumorigenesis in a 2 x 3 factorial design. Sprague-Dawley rats (n = 90) were divided into 6 diet groups: rats were fed a diet without cellulose that contained 5, 10, and 15 g/100 g lard, or diets containing 15% cellulose diet (15 g cellulose/100 g diet) and the same concentrations of lard. The development of large bowel tumors induced by the administration of 1,2-dimethylhydrazine (25 mg/kg body weight) for 19 wk was examined endoscopically. Tumor induction rates in the 15% cellulose groups were lower than in the 0% cellulose groups (P = 0.008), independent of the lard concentration. These results suggest that the preventive effect of cellulose against large bowel tumorigenesis is greater than the promotive effect of fat under the current experimental conditions.
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Affiliation(s)
- Shigeyuki Nakaji
- Department of Hygiene, Hirosaki University School of Medicine, Hirosaki, 036-8562 Japan.
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Type and amount of individual dietary fibers on: Serum lipid profiles, serum glucose concentration and energy intake in rats. Nutr Res 1998. [DOI: 10.1016/s0271-5317(98)00142-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Larangeira LLS, Taha MO, Ferme A, Lemos R, Plapler H. LOCALIZAÇÃO DE LESÕES TUMORAIS INDUZIDAS PELA 1,2-DIMETILHIDRAZINA E SEU GRAU DE ATIPIA NO COLON DE RATOS. Acta Cir Bras 1998. [DOI: 10.1590/s0102-86501998000300008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
As diversas técnicas para o tratamento cirúrgico da Síndrome do Intestino Curto apresentam, ainda hoje, problemas de difícil resolução. De todas, as mais promissoras são o transplante de intestino delgado e o transplante de colo. Uma técnica intermediária que mostrou resultados controversos tanto clínicos como experimentais, é a interposição de segmentos de colo no trajeto do intestino delgado após extensas ressecções. Sua aplicação serve, todavia, como um meio de se estudar a adaptação do colo, inclusive visando os transplantes. Neste trabalho foi estudada a indução de tumores pela 1,2-dimetilhidrazina, sua localização e grau de atipia nos diferentes segmentos intestinais após ressecção de 80% do jejuno-íleo. Foram encontradas 24 lesões ao exame macroscópico após a décima sexta semana de pós-operatório. O número de lesões por animal variou de 0 a 9. Das 24 lesões encontradas, 20 estavam no colo (83,33%), sendo que 11 estavam localizadas no cólon proximal, 3 no cólon distal e 6 anorretais. No estudo histológico, a maioria das lesões era de grau III. Este trabalho mostrou que o método de indução de tumores pela 1,2-dimetilhidrazina é apropriado para o estudo de tumores intestinais em ratos.
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Cameron IL, Hardman WE, Heitman DW. The nonfermentable dietary fiber lignin alters putative colon cancer risk factors but does not protect against DMH-induced colon cancer in rats. Nutr Cancer 1997; 28:170-6. [PMID: 9290124 DOI: 10.1080/01635589709514571] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The effect of supplementation of the diet with autohydrolyzed lignin on 1,2-dimethylhydrazine (DMH)-induced colon carcinogenesis was studied using 112 male Sprague-Dawley rats. Rats received eight weekly injections of DMH (9.5 mg/kg s.c.) or the saline vehicle solution and then were maintained on a basal AIN-76 fiber-free diet or the basal fiber-free diet plus 5% or 10% (wt/wt) lignin for 24 weeks. Rats were killed 32 weeks after the start of the experiment. Colon tumor incidence, location, and multiplicity were determined. Body weight, caloric intake, fecal dry weight, gut transit time, pH of cecal contents, and total fecal bile acid excretion were measured. Supplementation of the diet with 5% or 10% lignin resulted in increased fecal dry weight and total fecal bile acid excretion and in decreased gut transit time, colon pH, and fecal bile acid concentration. Dietary lignin did not significantly affect colon tumor incidence or multiplicity compared with the fiber-free diet. Thus dietary supplementation with autohydrolyzed lignin, a food fiber with good bulking characteristics, had a significant effect on several factors that have previously been linked to reduction of colon cancer risk, but the consumption of high levels of lignin did not decrease the risk for colon cancer.
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Affiliation(s)
- I L Cameron
- Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio 78284-7762, USA
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