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Suzuki S, Monno Y, Arai R, Miyaoka M, Toya Y, Esaki M, Wada T, Hatta W, Takasu A, Nagao S, Ishibashi F, Minato Y, Konda K, Dohmen T, Miki K, Okutomi M. Diagnostic performance of deep-learning-based virtual chromoendoscopy in gastric neoplasms. Gastric Cancer 2024; 27:539-547. [PMID: 38240891 DOI: 10.1007/s10120-024-01469-7] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 01/09/2024] [Indexed: 04/15/2024]
Abstract
BACKGROUNDS Cycle-consistent generative adversarial network (CycleGAN) is a deep neural network model that performs image-to-image translations. We generated virtual indigo carmine (IC) chromoendoscopy images of gastric neoplasms using CycleGAN and compared their diagnostic performance with that of white light endoscopy (WLE). METHODS WLE and IC images of 176 patients with gastric neoplasms who underwent endoscopic resection were obtained. We used 1,633 images (911 WLE and 722 IC) of 146 cases in the training dataset to develop virtual IC images using CycleGAN. The remaining 30 WLE images were translated into 30 virtual IC images using the trained CycleGAN and used for validation. The lesion borders were evaluated by 118 endoscopists from 22 institutions using the 60 paired virtual IC and WLE images. The lesion area concordance rate and successful whole-lesion diagnosis were compared. RESULTS The lesion area concordance rate based on the pathological diagnosis in virtual IC was lower than in WLE (44.1% vs. 48.5%, p < 0.01). The successful whole-lesion diagnosis was higher in the virtual IC than in WLE images; however, the difference was insignificant (28.2% vs. 26.4%, p = 0.11). Conversely, subgroup analyses revealed a significantly higher diagnosis in virtual IC than in WLE for depressed morphology (41.9% vs. 36.9%, p = 0.02), differentiated histology (27.6% vs. 24.8%, p = 0.02), smaller lesion size (42.3% vs. 38.3%, p = 0.01), and assessed by expert endoscopists (27.3% vs. 23.6%, p = 0.03). CONCLUSIONS The diagnostic ability of virtual IC was higher for some lesions, but not completely superior to that of WLE. Adjustments are required to improve the imaging system's performance.
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Affiliation(s)
- Sho Suzuki
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, 6-1-14, Konodai, Ichikawa-Shi, Chiba, 272-0827, Japan.
| | - Yusuke Monno
- Department of Systems and Control Engineering, School of Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Ryo Arai
- Department of Systems and Control Engineering, School of Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Masaki Miyaoka
- Department of Endoscopy, Fukuoka University Chikushi Hospital, Chikushino, Japan
| | - Yosuke Toya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
| | - Mitsuru Esaki
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukouka, Japan
- Department of Gastroenterology, Harasanshin Hospital, Fukuoka, Japan
| | - Takuya Wada
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Waku Hatta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ayaka Takasu
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Shigeaki Nagao
- Medical Examination Center, Showa General Hospital, Tokyo, Japan
| | - Fumiaki Ishibashi
- Department of Gastroenterology, International University of Health and Welfare Ichikawa Hospital, 6-1-14, Konodai, Ichikawa-Shi, Chiba, 272-0827, Japan
- Endoscopy Center, Koganei Tsurukame Clinic, Tokyo, Japan
| | - Yohei Minato
- Department of Gastrointestinal Endoscopy, NTT Medical Center Tokyo, Tokyo, Japan
| | - Kenichi Konda
- Division of Gastroenterology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Takahiro Dohmen
- Department of Gastroenterology, Yuri Kumiai General Hospital, Yurihonjo, Japan
| | - Kenji Miki
- Department of Internal Medicine, Tsujinaka Hospital Kashiwanoha, Kashiwa, Japan
| | - Masatoshi Okutomi
- Department of Systems and Control Engineering, School of Engineering, Tokyo Institute of Technology, Tokyo, Japan
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Peng S, Rempakos A, Mastrodemos OC, Rangan BV, Alexandrou M, Allana S, Al-Ogaili A, Mutlu D, Karacsonyi J, Bergstedt S, Khalid MS, Stanberry L, Brilakis ES. Use of the Indigo CAT RX aspiration system during percutaneous coronary intervention. Catheter Cardiovasc Interv 2024; 103:695-702. [PMID: 38419416 DOI: 10.1002/ccd.30994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 01/30/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND The use of the Indigo CAT RX Aspiration System (Penumbra Inc.) during percutaneous coronary intervention has received limited study. METHODS We retrospectively examined the clinical, angiographic, and procedural characteristics, outcomes, and follow-up of patients who underwent mechanical aspiration thrombectomy with the Indigo CAT RX system (Penumbra Inc.) at a large tertiary care hospital between January 2019 and April 2023. RESULTS During the study period, 83 patients (85 lesions) underwent thrombectomy with the Indigo CAT RX. Mean patient age was 64.9 ± 14.48 years and 31.2% were women. The most common presentations were ST-segment elevation myocardial infarction (MI) (66.2%) and non-ST-segment elevation MI (26.5%). A final thrombolysis in MI flow grade of 3 and final myocardial blush grade of 3 were achieved in 76% and 46% of the cases, respectively. Technical success was achieved in 88.9% of the cases that included Indigo CAT RX treatment only, compared with 57.1% of the cases that also included manual aspiration. There were no device-related serious adverse events. At 30-day postprocedure, the incidence of major adverse cardiac events (composite of cardiovascular death, recurrent MI, cardiogenic shock, new or worsening New York Heart Association Class IV heart failure, stroke) was 8.5%: 1.3% stroke (postprocedure, in-hospital), 1.3% MI, 6.1% cardiac death, and 7.5% developed cardiogenic shock. CONCLUSIONS Use of the Indigo CAT RX system is associated with high technical success and acceptable risk of complications, including stroke.
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Affiliation(s)
- Sydney Peng
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Athanasios Rempakos
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Olga C Mastrodemos
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Bavana V Rangan
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Michaella Alexandrou
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Salman Allana
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Ahmed Al-Ogaili
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Deniz Mutlu
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Judit Karacsonyi
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Seth Bergstedt
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Muhmmad S Khalid
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Larissa Stanberry
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
| | - Emmanouil S Brilakis
- Allina Health Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
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Rendón-Castrillón L, Ramírez-Carmona M, Ocampo-López C, González-López F, Cuartas-Uribe B, Mendoza-Roca JA. Efficient bioremediation of indigo-dye contaminated textile wastewater using native microorganisms and combined bioaugmentation-biostimulation techniques. Chemosphere 2024; 353:141538. [PMID: 38428533 DOI: 10.1016/j.chemosphere.2024.141538] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 01/18/2024] [Accepted: 02/23/2024] [Indexed: 03/03/2024]
Abstract
In this work, the bioremediation of wastewater from the textile industry with indigo dye content was carried out using combined bioaugmentation, bioventilation, and biostimulation techniques. Initially, the inoculum was prepared by isolating the microorganisms from the textile wastewater in a 2 L bioreactor. Then, the respirometry technique was implemented to determine the affinity of the microorganisms and the substrate by measuring CO2 and allowed the formulation of an empirical mathematical model for the growth kinetics of the microorganism. Finally, the bioremediation was carried out in a 3 L bioreactor obtaining an indigo dye removal efficiency of 20.7 ± 1.2%, 24.0 ± 1.5%, and 29.7 ± 1.1% for equivalent wavelengths of 436 nm, 525 nm, and 620 nm. The chemical oxygen demand showed an average reduction of 88.9 ± 2.5%, going from 470.7 ± 15.6 to 52.3 ± 10.7 ppm after 30 days under constant agitation and aeration. A negative generalized exponential model was fitted to assess the affinity of the microorganism with the wastewater as a substrate by evaluating the production of CO2 during the bioremediation. Bioremediation techniques improve water discharge parameters compared to chemical treatments implemented in the industry, reducing the use of substances that can generate secondary pollution. Bioaugmentation, biostimulation, and bioventing of the textile wastewater in this study demonstrate the potential of these combined techniques to serve as an efficient alternative for indigo-contaminated wastewater in the textile industry.
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Affiliation(s)
- Leidy Rendón-Castrillón
- Centro de Estudios y de Investigación en Biotecnología (CIBIOT), Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Circular 1(a) No. 70-01, Medellín, 050031, Colombia
| | - Margarita Ramírez-Carmona
- Centro de Estudios y de Investigación en Biotecnología (CIBIOT), Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Circular 1(a) No. 70-01, Medellín, 050031, Colombia
| | - Carlos Ocampo-López
- Centro de Estudios y de Investigación en Biotecnología (CIBIOT), Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Circular 1(a) No. 70-01, Medellín, 050031, Colombia.
| | - Federico González-López
- Centro de Estudios y de Investigación en Biotecnología (CIBIOT), Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Circular 1(a) No. 70-01, Medellín, 050031, Colombia
| | - Beatriz Cuartas-Uribe
- Instituto de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, 46022, Valencia, Spain
| | - José Antonio Mendoza-Roca
- Instituto de Seguridad Industrial, Radiofísica y Medioambiental, Universitat Politècnica de València, 46022, Valencia, Spain
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Takabayashi K, Sugimoto S, Nanki K, Yoshimatsu Y, Kiyohara H, Mikami Y, Sujino T, Kato M, Hosoe N, Shimoda M, Yahagi N, Ogata H, Iwao Y, Kanai T. Characteristics of flat-type ulcerative colitis-associated neoplasia on chromoendoscopic imaging with indigo carmine dye spraying. Dig Endosc 2024; 36:446-454. [PMID: 37389858 DOI: 10.1111/den.14628] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/27/2023] [Indexed: 07/01/2023]
Abstract
OBJECTIVES Despite recent advances in endoscopic equipment and diagnostic techniques, early detection of ulcerative colitis-associated neoplasia (UCAN) remains difficult because of the complex background of the inflamed mucosa of ulcerative colitis and the morphologic diversity of the lesions. We aimed to describe the main diagnostic patterns for UCAN in our cohort, including lateral extension surrounding flat lesions. METHODS Sixty-three lesions in 61 patients with flat-type dysplasia that were imaged with dye chromoendoscopy (DCE) were included in this analysis. These DCE images were analyzed to clarify the dye-chromoendoscopic imaging characteristics of flat dysplasia, and the lesions were broadly classified into dysplastic and nondysplastic mucosal patterns. RESULTS Dysplastic mucosal patterns were classified into two types: small round patterns with round to roundish structures, and mesh patterns with intricate mesh-like structures. Lesions with a nondysplastic mucosal pattern were divided into two major types: a ripple-like type and a gyrus-like type. Of note, 35 lesions (55.6%) had a small round pattern, and 51 lesions (80.9%) had some type of mesh pattern. About 70% of lesions with small round patterns and 49% of lesions with mesh patterns were diagnosed as high-grade dysplasia or carcinoma, while about 30% of lesions with small round patterns and 51% of lesions with mesh patterns were diagnosed as low-grade dysplasia. CONCLUSION When a characteristic mucosal pattern, such as a small round or mesh pattern, is found by DCE, the possibility of UCAN should be considered.
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Affiliation(s)
- Kaoru Takabayashi
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Shinya Sugimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kosaku Nanki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yusuke Yoshimatsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroki Kiyohara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yohei Mikami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tomohisa Sujino
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Motohiko Kato
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hosoe
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Masayuki Shimoda
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Naohisa Yahagi
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan
| | - Yasushi Iwao
- Center for Preventive Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Shimada F, Yoshimatsu Y, Sujino T, Fukuda T, Aoki Y, Hayashi Y, Tojo A, Kawaguchi T, Kiyohara H, Sugimoto S, Nanki K, Mikami Y, Miyamoto K, Takabayashi K, Hosoe N, Kato M, Ogata H, Naganuma M, Kanai T. Clinical outcomes of patients with remitting ulcerative colitis after discontinuation of indigo naturalis. Sci Rep 2024; 14:5778. [PMID: 38459203 PMCID: PMC10923923 DOI: 10.1038/s41598-024-56543-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/07/2024] [Indexed: 03/10/2024] Open
Abstract
Indigo naturalis is an effective treatment for ulcerative colitis. However, long-term use of indigo naturalis causes adverse events, such as pulmonary hypertension. The natural history of patients with ulcerative colitis who discontinued indigo naturalis after induction therapy is unknown. Moreover, the clinical features of patients who relapsed within 52 weeks after the discontinuation of indigo naturalis are unclear. This study aimed to assess the clinical outcomes of patients with ulcerative colitis after discontinuation of indigo naturalis and to identify potential markers responsible for relapse. This single-center retrospective study investigated the follow-up of 72 patients who achieved a clinical response 8 weeks after indigo naturalis treatment. We observed relapse in patients with ulcerative colitis after the discontinuation of indigo naturalis. We analyzed the factors predicting long-term outcomes after discontinuation of indigo naturalis. Relapse was observed in 24%, 57%, and 71% of patients at 8, 26, and 52 weeks, respectively. There were no predictive markers in patients who relapsed within 52 weeks after the discontinuation of indigo naturalis. The ulcerative colitis relapse rate after indigo naturalis discontinuation was high. Follow-up treatment is required after the discontinuation of indigo naturalis in patients with ulcerative colitis.
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Affiliation(s)
- Fumie Shimada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yusuke Yoshimatsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tomohisa Sujino
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Tomohiro Fukuda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Division of Gastroenterology, Yokohama Municipal Citizen's Hospital, 1-1, Nishimachi, Mitsuzawa, Kanagawaku, Yokohama, Kanagawa, 221-0855, Japan
| | - Yasuhiro Aoki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yukie Hayashi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Anna Tojo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takaaki Kawaguchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hiroki Kiyohara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shinya Sugimoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kosaku Nanki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yohei Mikami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kentaro Miyamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Miyarisan Pharmaceutical Co., Ltd., 1-10-3, Kaminakazato, Kita-ku, Tokyo, 114-0016, Japan
| | - Kaoru Takabayashi
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Naoki Hosoe
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Motohiko Kato
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Haruhiko Ogata
- Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Makoto Naganuma
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
- Department of Gastroenterology and Hepatology, Kansai Medical University, 2-3-1, Shinmachi, Maikatashi, Osaka, 573-1191, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
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Yin S, Li Y, Hou J. Expression of the two-component regulator StyS/StyR enhanced transcription of the styrene monooxygenase gene styAB and indigo biosynthesis in Escherichia coli. Enzyme Microb Technol 2024; 174:110381. [PMID: 38134734 DOI: 10.1016/j.enzmictec.2023.110381] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
Indigo, an economically important dye, could be biosynthesized from indole by catalysis of the styrene monooxygenase StyAB. To enhance indigo biosynthesis, the styAB gene and its transcription regulator gene styS/styR in styrene catabolism were cloned from Pseudomonas putida and coexpressed in Escherichia coli. The presence of the intact regulator gene styS/styR dramatically increased the transcriptional levels of styA and styB by approximately 120-fold in the recombinant strain SRAB2 with coexpression of styS/styR and styAB compared to the control strain ABST with solo expression of styAB. A yield of 67.6 mg/L indigo was detected in strain SRAB2 after 24 h of fermentation with 120 μg/mL indole, which was approximately 14-fold higher than that in the control strain ABST. The maximum yield of indigo was produced from 160 μg/mL indole in fermentation of strain SRAB2. However, the addition of styrene to the media significantly inhibited the transcription of styA and styB and consequent indigo biosynthesis in recombinant E. coli strains. Furthermore, the substitution of indole with tryptophan as the fermentation substrate remarkably boosted indigo production, and the maximal yield of 565.6 mg/L was detected in strain SRAB2 in fermentation with 1.2 mg/mL tryptophan. The results revealed that the regulation of styAB transcription by the two-component regulator StyS/StyR in styrene catabolism in P. putida was effective in E. coli, which provided a new strategy for the development of engineered E. coli strains with the capacity for highly efficient indigo production.
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Affiliation(s)
- Sheng Yin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University, Beijing 100048, China; Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University, Beijing 100048, China; School of Food & Health, Beijing Technology & Business University, Beijing 100048, China.
| | - Yujie Li
- School of Food & Health, Beijing Technology & Business University, Beijing 100048, China
| | - Jialing Hou
- School of Food & Health, Beijing Technology & Business University, Beijing 100048, China
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7
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Maldonado TS, Powell A, Wendorff H, Rowse J, Nagarsheth KH, Dexter DJ, Dietzek AM, Muck PE, Arko FR, Chung J. Safety and efficacy of mechanical aspiration thrombectomy for patients with acute lower extremity ischemia. J Vasc Surg 2024; 79:584-592.e5. [PMID: 37931885 DOI: 10.1016/j.jvs.2023.10.062] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/17/2023] [Accepted: 10/22/2023] [Indexed: 11/08/2023]
Abstract
OBJECTIVE Acute limb ischemia (ALI) is associated with high rates of amputation and consequent morbidity and mortality. The objective of this study is to report on the safety and efficacy of aspiration thrombectomy using the Indigo Aspiration System in patients with lower extremity (LE) ALI. METHODS The STRIDE study was an international, multicenter, prospective, study that enrolled 119 participants presenting with LE-ALI. Patients were treated firstline with mechanical thrombectomy using the Indigo Aspiration System, before stenting or angioplasty, or other therapies as determined by treating physician. The primary end point was target limb salvage at 30 days after the procedure. Secondary end points within 30 days included technical success, defined as core laboratory-adjudicated Thrombolysis in Myocardial Infarction (TIMI) 2/3 flow rate immediately after the procedure, changes in modified Society for Vascular Surgery runoff score, improvement of Rutherford classification compared with before the procedure, patency, rate of device-related serious adverse events, and major periprocedural bleeding. Secondary end points that will be evaluated at 12 months include target limb salvage and mortality. RESULTS Of the 119 participants enrolled at 16 sites, the mean age was 66.3 years (46.2% female). At baseline (n = 119), ischemic severity was classified as Rutherford I in 10.9%, Rutherford IIa in 54.6%, and Rutherford IIb in 34.5%. The mean target thrombus length was 125.7 ± 124.7 mm. Before the procedure, 93.0% (of patients 107/115) had no flow (TIMI 0) through the target lesion. The target limb salvage rate at 30 days was 98.2% (109/111). The rate of periprocedural major bleed was 4.2% (5/119) and device-related serious adverse events was 0.8% (1/119). Restoration of flow (TIMI 2/3) was achieved in 96.3% of patients (105/109) immediately after the procedure. The median improvement in the modified Society for Vascular Surgery runoff score (before vs after the procedure) was 6.0 (interquartile range, 0.0-11.0). Rutherford classifications also improved after discharge in 86.5% of patients (83/96), as compared with preprocedural scores. Patency at 30 days was achieved in 89.4% of patients (101/113). CONCLUSIONS In the STRIDE (A Study of Patients with Lower Extremity Acute Limb Ischemia to Remove Thrombus with the Indigo Aspiration System) study, aspiration thrombectomy with the Indigo System provided a safe and effective endovascular treatment for patients with LE-ALI, resulting in a high rate (98.2%) of successful limb salvage at 30 days, with few periprocedural complications.
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Affiliation(s)
| | | | | | - Jarrad Rowse
- University of Alabama at Birmingham, Birmingham, AL
| | | | | | | | | | - Frank R Arko
- Sanger Heart and Vascular Institute, Charlotte, NC
| | - Jayer Chung
- Division of Vascular Surgery & Endovascular Therapy, Baylor College of Medicine, Houston, TX
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Lu YB, Lu SC, Li FD, Le PH, Zhang KH, Sun ZZ, Huang YN, Weng YC, Chen WT, Fu YW, Qian JB, Hu B, Xu H, Chiu CT, Xu QW, Gong W. Artificial intelligence-aided diagnostic imaging: A state-of-the-art technique in precancerous screening. J Gastroenterol Hepatol 2024; 39:544-551. [PMID: 38059883 DOI: 10.1111/jgh.16429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND AND AIM Chromoendoscopy with the use of indigo carmine (IC) dye is a crucial endoscopic technique to identify gastrointestinal neoplasms. However, its performance is limited by the endoscopist's skill, and no standards are available for lesion identification. Thus, we developed an artificial intelligence (AI) model to replace chromoendoscopy. METHODS This pilot study assessed the feasibility of our novel AI model in the conversion of white-light images (WLI) into virtual IC-dyed images based on a generative adversarial network. The predictions of our AI model were evaluated against the assessments of five endoscopic experts who were blinded to the purpose of this study with a staining quality rating from 1 (unacceptable) to 4 (excellent). RESULTS The AI model successfully transformed the WLI of polyps with different morphologies and different types of lesions in the gastrointestinal tract into virtual IC-dyed images. The quality ratings of the real IC-dyed and AI images did not significantly differ concerning surface structure (AI vs IC: 3.08 vs 3.00), lesion border (3.04 vs 2.98), and overall contrast (3.14 vs 3.02) from 10 sets of images (10 AI images and 10 real IC-dyed images). Although the score depended significantly on the evaluator, the staining methods (AI or real IC) and evaluators had no significant interaction (P > 0.05) with each other. CONCLUSION Our results demonstrated the feasibility of employing AI model's virtual IC staining, increasing the possibility of being employed in daily practice. This novel technology may facilitate gastrointestinal lesion identification in the future.
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Affiliation(s)
- Yang-Bor Lu
- Department of Digestive Disease, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
- Endoscopy Center, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
| | - Si-Cun Lu
- Departmemt of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
- The Third School of Clinical Medicine, Southern Medical University, Shenzhen, China
| | - Fu-Dong Li
- Department of Gastroenterology and Endoscopy Center, First Hospital of Jilin University, Jilin, China
| | - Puo-Hsien Le
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
| | - Kai-Hua Zhang
- School of Computer, Nanjing University of Information Science and Technology, Nanjing, China
| | - Zi-Zheng Sun
- School of Computer, Nanjing University of Information Science and Technology, Nanjing, China
| | - Yung-Ning Huang
- Department of Digestive Disease, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
- Endoscopy Center, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
| | - Yu-Chieh Weng
- Department of Digestive Disease, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
- Endoscopy Center, Xiamen Chang Gung Hospital, Hua Qiao University, Xiamen, China
| | - Wei-Ting Chen
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
| | - Yi-Wei Fu
- Department of Gastroenterology, Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing, China
| | - Jun-Bo Qian
- Department of Gastroenterology, The Second Hospital affiliated to Nantong University, Nantong, China
| | - Bin Hu
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Xu
- Department of Gastroenterology and Endoscopy Center, First Hospital of Jilin University, Jilin, China
| | - Cheng-Tang Chiu
- Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
| | - Qin-Wei Xu
- Endoscopy Center, Department of Gastroenterology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Wei Gong
- Departmemt of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
- The Third School of Clinical Medicine, Southern Medical University, Shenzhen, China
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9
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Duan X, Pi Q, Tang L. pH-dependent and whole-cell catalytic decolorization of dyes using recombinant dye-decolorizing peroxidase from Rhodococcus jostii. Bioprocess Biosyst Eng 2024; 47:355-366. [PMID: 38326513 DOI: 10.1007/s00449-024-02968-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 01/15/2024] [Indexed: 02/09/2024]
Abstract
Dyes in wastewater have adverse effects on the environment and human health. Dye-decolorizing peroxidase (DyP) is a promising biocatalyst to dyes degradation, but the decolorization rates varied greatly which influencing factors and mechanisms remain to be fully disclosed. To explore an effective decolorizing approach, we have studied a DyP from Rhodococcus jostii (RhDyPB) which was overexpressed in Escherichia coli to decolorize four kinds of dyes, Reactive blue 19, Eosin Y, Indigo carmine, and Malachite green. We found the decolorization rates of the dyes by purified RhDyPB were all pH-dependent and the highest one was 94.4% of Malachite green at pH 6.0. ESI-MS analysis of intermediates in the decolorization process of Reactive blue 19 proved the degradation was due to peroxidase catalysis. Molecular docking predicated the interaction of RhDyPB with dyes, and a radical transfer reaction. In addition, we performed decolorization of dyes with whole E. coli cell with and without expressing RhDyPB. It was found that decolorization of dyes by E. coli cell was due to both cell absorption and degradation, and RhDyPB expression improved the degradation rates towards Reactive blue 19, Indigo carmine and Malachite green. The effective decolorization of Malachite green and the successful application of whole DyP-overexpressed cells in dye decolorization is conducive to the bioremediation of dye-containing wastewaters by DyPs.
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Affiliation(s)
- Xiaoyan Duan
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, No 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, China
| | - Qian Pi
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, No 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, China
| | - Lei Tang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, No 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, China.
- School of Biotechnology, Jiangnan University, No 1800 Lihu Avenue, Wuxi, 214122, Jiangsu, China.
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10
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Bidart GN, Teze D, Jansen CU, Pasutto E, Putkaradze N, Sesay AM, Fredslund F, Lo Leggio L, Ögmundarson O, Sukumara S, Qvortrup K, Welner DH. Chemoenzymatic indican for light-driven denim dyeing. Nat Commun 2024; 15:1489. [PMID: 38413572 PMCID: PMC10899603 DOI: 10.1038/s41467-024-45749-3] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 02/01/2024] [Indexed: 02/29/2024] Open
Abstract
Blue denim, a billion-dollar industry, is currently dyed with indigo in an unsustainable process requiring harsh reducing and alkaline chemicals. Forming indigo directly in the yarn through indican (indoxyl-β-glucoside) is a promising alternative route with mild conditions. Indican eliminates the requirement for reducing agent while still ending as indigo, the only known molecule yielding the unique hue of blue denim. However, a bulk source of indican is missing. Here, we employ enzyme and process engineering guided by techno-economic analyses to develop an economically viable drop-in indican synthesis technology. Rational engineering of PtUGT1, a glycosyltransferase from the indigo plant, alleviated the severe substrate inactivation observed with the wildtype enzyme at the titers needed for bulk production. We further describe a mild, light-driven dyeing process. Finally, we conduct techno-economic, social sustainability, and comparative life-cycle assessments. These indicate that the presented technologies have the potential to significantly reduce environmental impacts from blue denim dyeing with only a modest cost increase.
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Affiliation(s)
- Gonzalo Nahuel Bidart
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark
| | - David Teze
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark
| | - Charlotte Uldahl Jansen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, DK-2800, Kgs. Lyngby, Denmark
| | - Eleonora Pasutto
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark
| | - Natalia Putkaradze
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark
| | - Anna-Mamusu Sesay
- Lab for Sustainability and Design, Designskolen Kolding, Ågade 10, DK-6000, Kolding, Denmark
| | - Folmer Fredslund
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark
| | - Leila Lo Leggio
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen, Denmark
| | - Olafur Ögmundarson
- Faculty of Food Science and Nutrition, University of Iceland, Aragata 14, 102, Reykjavík, Iceland
| | - Sumesh Sukumara
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark
| | - Katrine Qvortrup
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, DK-2800, Kgs. Lyngby, Denmark.
| | - Ditte Hededam Welner
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Kemitorvet 220, DK-2800, Kgs. Lyngby, Denmark.
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Lanman TA, Cao TQ, Miller JJ, Nagpal S. Ready to INDIGO: Vorasidenib Ushers in the Era of Isocitrate Dehydrogenase Inhibition in Low-Grade Glioma. Int J Radiat Oncol Biol Phys 2024; 118:334-336. [PMID: 38220256 DOI: 10.1016/j.ijrobp.2023.10.045] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 01/16/2024]
Affiliation(s)
- Tyler A Lanman
- Pappas Center for Neuro-Oncology, Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| | - Toni Q Cao
- Department of Neurology, Stanford University, Palo Alto, California
| | - Julie J Miller
- Pappas Center for Neuro-Oncology, Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts
| | - Seema Nagpal
- Department of Neurology, Stanford University, Palo Alto, California.
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12
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Jana G, Sing S, Das A, Basu A. Interaction of food colorant indigo carmine with human and bovine serum albumins: A multispectroscopic, calorimetric, and theoretical investigation. Int J Biol Macromol 2024; 259:129143. [PMID: 38176484 DOI: 10.1016/j.ijbiomac.2023.129143] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/06/2024]
Abstract
In this work we have studied the interaction of the food dye Indigo-Carmine (IndC) with the most studied model transport proteins i.e. human and bovine serum albumin (HSA & BSA). A multispectroscopic approach was used to analyze the details of the binding process. The intrinsic fluorescence of both the albumins was significantly quenched by IndC and the quenching was both static and dynamic in nature with the former being dominant. The HSA-lndC and BSA-IndC distance after complexation was determined by Förster resonance energy transfer (FRET) method which suggested efficient energy transfer from the albumins to IndC. Thermodynamics of serum protein-IndC complexation was estimated by isothermal titration calorimetry (ITC) which revealed that the binding was enthalpy driven. Circular dichroism (CD) and FTIR spectroscopy revealed that the binding of IndC induced secondary structural changes in both the serum proteins. Synchronous and 3D fluorescence spectroscopy revealed that the binding interaction caused microenvironmental changes of protein fluorophores. Molecular docking analysis suggested that hydrogen bonding and hydrophobic interactions are the major forces involved in the complexation process.
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Affiliation(s)
- Gouranga Jana
- Department of Chemistry, Vidyasagar University, Midnapore 721 102, India
| | - Shukdeb Sing
- Department of Chemistry, Vidyasagar University, Midnapore 721 102, India
| | - Arindam Das
- Department of Chemistry, Vidyasagar University, Midnapore 721 102, India
| | - Anirban Basu
- Department of Chemistry, Vidyasagar University, Midnapore 721 102, India.
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13
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Xu X, Taha R, Chu C, Xiao L, Wang T, Wang X, Huang X, Jiang Z, Sun L. Indirubin mediates adverse intestinal reactions in guinea pigs by downregulating the expression of AchE through AhR. Xenobiotica 2024; 54:83-94. [PMID: 38164702 DOI: 10.1080/00498254.2023.2297745] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Indirubin is the main component of the traditional Chinese medicine Indigo naturalis (IN), a potent agonist of aryl hydrocarbon receptors (AhRs). In China, IN is used to treat psoriasis and ulcerative colitis, and indirubin is used for the treatment of chronic myelogenous leukaemia. However, IN and indirubin have adverse reactions, such as abdominal pain, diarrhoea, and intussusception, and their specific mechanism is unclear.The purpose of our research was to determine the specific mechanism underlying the adverse effects of IN and indirubin. By tracking the modifications in guinea pigs after the intragastric administration of indirubin for 28 days.The results demonstrate that indirubin could accelerate bowel movements and decrease intestinal acetylcholinesterase (AchE) expression. Experiments with NCM460 cells revealed that indirubin significantly reduced the expression of AchE, and the AchE levels were increased after the silencing of AhR and re-exposure to indirubin.This study showed that the inhibition of AchE expression by indirubin plays a key role in the occurrence of adverse reactions to indirubin and that the underlying mechanism is related to AhR-mediated AchE downregulation.
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Affiliation(s)
- Xiaoting Xu
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
| | - Reham Taha
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
| | - Chenghan Chu
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
| | - Li Xiao
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou, China
| | - Tao Wang
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
| | - Xinzhi Wang
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
| | - Xin Huang
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
| | - Zhenzhou Jiang
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
| | - Lixin Sun
- Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical University, Nanjing, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing, China
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14
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Lepor H, Wiegand L, Patel K, Du W, Gagnon S. A Randomized Clinical Trial Evaluating Indigo Carmine as a Visualization Aid for Evaluating Ureteral Patency. Urology 2024; 184:105-111. [PMID: 38061609 DOI: 10.1016/j.urology.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/17/2023] [Indexed: 12/30/2023]
Abstract
OBJECTIVE To determine whether intravenous indigo carmine provides a visualization advantage compared to saline in the evaluation of ureteral patency in a randomized, controlled clinical trial. METHODS Patients undergoing urological or gynecological surgical procedures in which the patency of the ureter was to be assessed received a saline injection and were randomized to receive 2.5 mL or 5.0 mL of indigo carmine. Blinded video assessments were conducted by independent reviewers using a conspicuity scale ranked 1 (poorest) to 5 (best), and subjects with scores ≥3 and at least a + 1-point difference from saline were considered responders. Time to visualization was recorded for indigo carmine. A responder analysis evaluated whether indigo carmine showed improved visualization. RESULTS There were 96 ureters evaluated with the 5.0 mL dose of indigo carmine, 92 with the 2.5 mL dose, and 180 with saline. Most ureters were scored a 4 or higher on the conspicuity scale following indigo carmine; both doses were significantly better than saline (P < .0001). Overall, 92.3% of patients were rated as a responder for either ureter. The median time to visualization of blue color was not significantly different (6.0 minutes in the 5.0 mL group and 5.9 minutes in the 2.5 mL group). There were no adverse events related to indigo carmine use. CONCLUSION Both dose levels of indigo carmine were significantly better than saline as a visualization aid for ureter patency.
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Affiliation(s)
- Herbert Lepor
- Department of Urology, New York University Grossman School of Medicine, New York, NY
| | - Lucas Wiegand
- Department of Urology, University of South Florida College of Medicine, Tampa, FL
| | | | - Wei Du
- Clinical Statistics Consulting, Blue Bell, PA
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15
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Ge M, Deng W, Wang Z, Weng C, Yang Y. Effective Decolorization and Detoxification of Single and Mixed Dyes with Crude Laccase Preparation from a White-Rot Fungus Strain Pleurotus eryngii. Molecules 2024; 29:669. [PMID: 38338413 PMCID: PMC10856677 DOI: 10.3390/molecules29030669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/27/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
To fully harness the potential of laccase in the efficient decolorization and detoxification of single and mixed dyes with diverse chemical structures, we carried out a systematic study on the decolorization and detoxification of single and mixed dyes using a crude laccase preparation obtained from a white-rot fungus strain, Pleurotus eryngii. The crude laccase preparation showed efficient decolorization of azo, anthraquinone, triphenylmethane, and indigo dyes, and the reaction rate constants followed the order Remazol Brilliant Blue R > Bromophenol blue > Indigo carmine > New Coccine > Reactive Blue 4 > Reactive Black 5 > Acid Orange 7 > Methyl green. This laccase preparation exhibited notable tolerance to SO42- salts such as MnSO4, MgSO4, ZnSO4, Na2SO4, K2SO4, and CdSO4 during the decolorization of various types of dyes, but was significantly inhibited by Cl- salts. Additionally, this laccase preparation demonstrated strong tolerance to some organic solvents such as glycerol, ethylene glycol, propanediol, and butanediol. The crude laccase preparation demonstrated the efficient decolorization of dye mixtures, including azo + azo, azo + anthraquinone, azo + triphenylmethane, anthraquinone + indigo, anthraquinone + triphenylmethane, and indigo + triphenylmethane dyes. The decolorization kinetics of mixed dyes provided preliminary insight into the interactions between dyes in the decolorization process of mixed dyes, and the underlying reasons and mechanisms were discussed. Importantly, the crude laccase from Pleurotus eryngii showed efficient repeated-batch decolorization of single-, two-, and four-dye mixtures. This crude laccase demonstrated high stability and reusability in repeated-batch decolorization. Furthermore, this crude laccase was efficient in the detoxification of different types of single dyes and mixed dyes containing different types of dyes, and the phytotoxicity of decolorized dyes (single and mixed dyes) was significantly reduced. The crude laccase efficiently eliminated phytotoxicity associated with single and mixed dyes. Consequently, the crude laccase from Pleurotus eryngii offers significant potential for practical applications in the efficient decolorization and management of single and mixed dye pollutants with different chemical structures.
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Affiliation(s)
| | | | | | | | - Yang Yang
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan 430079, China
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16
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Hirata K, Yamada Y, Hamamoto Y, Tsunoda K, Muramatsu H, Horie S, Sukawa Y, Naganuma M, Nakagawa T, Kanai T. Prospective feasibility study of indigo naturalis ointment for chemotherapy-induced oral mucositis. BMJ Support Palliat Care 2024; 13:e1001-e1007. [PMID: 34649840 PMCID: PMC10850637 DOI: 10.1136/bmjspcare-2021-003199] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/28/2021] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Indigo naturalis, a herbal medicine effective against ulcerative colitis, exhibits anti-inflammatory effects and induces interleukin-22-mediated antimicrobial peptide production. Anti-inflammatory activity and the prevention of secondary infection are essential for the management of chemotherapy-induced oral mucositis (CIOM); therefore, we developed an indigo naturalis ointment to be administered topically for CIOM and evaluated its feasibility. METHODS We performed a single-centre, open-label, prospective feasibility study from March 2017 to December 2018. The key eligibility criteria for the subjects were as follows: (1) receiving chemotherapy for a malignant tumour; (2) grade 1 or 2 CIOM and (3) receiving continuous oral care. The treatment protocol comprised topical indigo naturalis ointment application three times a day for 7 days. The primary endpoint assessed was feasibility. The secondary endpoints assessed were the changes in oral findings, oral cavity pain and safety. RESULTS Nineteen patients with CIOM were enrolled. The average feasibility (the proportion of prescribed applications that were carried out) observed in this study was 94.7%±8.9% (95% CI 90.5% to 99.0%), which was higher than the expected feasibility. The revised oral assessment guide scores of the mucous membrane domain and total scores were significantly improved. All patients reported a reduction in oral cavity pain, with a median pain resolution duration of 6 days. No serious adverse events were observed. CONCLUSIONS The indigo naturalis ointment was feasible, and showed the potential for efficacy and safety. Larger randomised controlled trials are needed to further assess the efficacy and safety of indigo naturalis compared with a placebo. TRIAL REGISTRATION NUMBER UMIN000024271.
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Affiliation(s)
- Kenro Hirata
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yuka Yamada
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yasuo Hamamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kazuyuki Tsunoda
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | | | - Sara Horie
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yasutaka Sukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Naganuma
- The Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan
| | - Taneaki Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Chandel N, Singh BB, Dureja C, Yang YH, Bhatia SK. Indigo production goes green: a review on opportunities and challenges of fermentative production. World J Microbiol Biotechnol 2024; 40:62. [PMID: 38182914 DOI: 10.1007/s11274-023-03871-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/11/2023] [Indexed: 01/07/2024]
Abstract
Indigo is a widely used dye in various industries, such as textile, cosmetics, and food. However, traditional methods of indigo extraction and processing are associated with environmental and economic challenges. Fermentative production of indigo using microbial strains has emerged as a promising alternative that offers sustainability and cost-effectiveness. This review article provides a critical overview of microbial diversity, metabolic pathways, fermentation strategies, and genetic engineering approaches for fermentative indigo production. The advantages and limitations of different indigo production systems and a critique of the current understanding of indigo biosynthesis are discussed. Finally, the potential application of indigo in other sectors is also discussed. Overall, fermentative production of indigo offers a sustainable and bio-based alternative to synthetic methods and has the potential to contribute to the development of sustainable and circular biomanufacturing.
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Affiliation(s)
- Neha Chandel
- School of Medical and Allied Sciences, GD Goenka University, Gurugram, Haryana, 122103, India
| | - Bharat Bhushan Singh
- Department of Genomic Medicine, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Chetna Dureja
- Center for Inflammatory and Infectious Diseases, Texas A&M Health Science Center, Institute of Bioscience and Technology, Houston, TX, USA
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea
- Institute for Ubiquitous Information Technology and Applications, Seoul, 05029, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea.
- Institute for Ubiquitous Information Technology and Applications, Seoul, 05029, Republic of Korea.
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18
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Zhang S, Khan S, Naz F, Noman A, Nawaz A, Ali S, Saeed K, Ali N, Ge M. Robust iron-doped manganese oxide nanoparticles from facile fabrication to photo-catalytic degradation application of binary dyes mixture. Environ Res 2024; 240:117384. [PMID: 37858685 DOI: 10.1016/j.envres.2023.117384] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
The manganese oxide (MnO2 and iron-doped manganese oxide (Fe-MnO2) nanoparticles (NPs) with reduced band gap (Eg) were fabricated through the co-precipitation process. They used to degrade Indigo Carmine (IC) and Rhodamine B (RB) binary mixture in an aqueous medium under solar light irradiation. From FT-IR, the twisting modes of the Mn-O bond and the stretching vibrations of the Fe-Mn-O2 bond were confirmed from the peaks observed at 480 cm-1,584 cm-1,675 cm-1, and 900 cm-1, 1150 cm-1, and 1200 cm-1 respectively. The MnO2 has an optical band gap of 3.2 eV, which was decreased to 3 eV in Fe-MnO2. The zero charge (PZC) point was 8 for Fe-MnO2 and 7 for MnO2. The BET surface area for Fe-MnO2 was 398 m2/g, relatively higher than MnO2 particles, having a surface area of 384 m2/g. The average crystallite sizes calculated from Scherer formulae were 37 nm for MnO2 and 31 nm for Fe-MnO2 NPs. SEM confirmed the irregular morphology of the prepared particles. It was analyzed that agglomeration occurs in MnO2 than the Fe-MnO2. The maximum degradation of IC dye was 99%, and that of RB was 98% at the optimum conditions. The data were best fitted to second-order kinetics.
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Affiliation(s)
- Shizhong Zhang
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Sohail Khan
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Falak Naz
- Department of Chemistry, Bacha Khan University, Charsadda, 24420, KPK, Pakistan.
| | - Ayesha Noman
- Department of Chemistry, Bacha Khan University, Charsadda, 24420, KPK, Pakistan
| | - Arif Nawaz
- Department of Chemistry, Bacha Khan University, Charsadda, 24420, KPK, Pakistan
| | - Sajid Ali
- Department of Chemistry, Bacha Khan University, Charsadda, 24420, KPK, Pakistan
| | - Khalid Saeed
- Department of Chemistry, Bacha Khan University, Charsadda, 24420, KPK, Pakistan
| | - Nisar Ali
- National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Ming Ge
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226001, China
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Cavalcante RN, Nishinari K, Centofanti G, Krutman M, De Fina B, Sato VH, de Oliveira ES, Pereira LVB, Mohrbacher S, Bales AM, Ferreira BMC, Neves PDMDM, Chocair PR, Cuvello Neto AL. The role of vacuum-assisted mechanical thrombectomy in the management of acutely thrombosed arteriovenous fistulas and grafts. J Vasc Access 2024; 25:113-118. [PMID: 35633069 DOI: 10.1177/11297298221099469] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
PURPOSE The purpose of this study is to evaluate the safety and efficacy of the mechanical thrombectomy with the Indigo System in the treatment of thrombosed arteriovenous fistulas and grafts. METHODS A retrospective search of endovascular procedures performed from November 2018 to June 2020 was conducted. Inclusion criteria were: acute arteriovenous fistula or graft thrombosis that underwent endovascular mechanical thrombectomy with Indigo System. The following information was collected from each case: sex, age, fistula modality, fistula location, treatment modality, and outcomes. Endpoints evaluated were: technical and clinical success rates; primary, assisted primary, and secondary patency rates; complication rates. RESULTS Twenty-six mechanical thrombectomy procedures for declotting of arteriovenous fistula thrombosis, using the Indigo System, were performed in 22 patients. Technical and clinical success was achieved in 23/26 cases (88%). Mean follow-up was 9 months (range 11-539 days). The 6-month primary, primary assisted, and secondary patency rates were 71%, 86%, 93% and the 12-month primary, primary assisted, and secondary patency rates were 71%, 72%, 80%, respectively. No technical or device-related complications were observed during thrombectomy, however two venous ruptures occurred on the angioplasty of the underlying stenosis. CONCLUSION In conclusion, vacuum-assisted thrombectomy of acutely thrombosed arteriovenous fistulas and grafts with Indigo System is safe and effective, providing good short term patency rates.
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Affiliation(s)
| | - Kenji Nishinari
- Hospital Alemão Oswaldo Cruz, Vascular and Endovascular Surgery, São Paulo, Brazil
| | - Guiherme Centofanti
- Hospital Alemão Oswaldo Cruz, Vascular and Endovascular Surgery, São Paulo, Brazil
| | - Mariana Krutman
- Hospital Alemão Oswaldo Cruz, Vascular and Endovascular Surgery, São Paulo, Brazil
| | - Bruna De Fina
- Hospital Alemão Oswaldo Cruz, Vascular and Endovascular Surgery, São Paulo, Brazil
| | | | | | | | - Sara Mohrbacher
- Hospital Alemão Oswaldo Cruz, Nephrology and Dialysis Center, São Paulo, Brazil
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20
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Zhao X, Ren Z, Hu Z, Li Y, Zhang C, Yang Q, An L, Zhu B, Wang H, Liu J. Study on the simultaneous release of microfiber and indigo dye in denim fabric home washing. Ecotoxicol Environ Saf 2024; 269:115735. [PMID: 38039852 DOI: 10.1016/j.ecoenv.2023.115735] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/15/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
In recent years, with the increasing global focus on environmental protection, the issue of microfiber release from denim during the washing process has gained attention. In this study, a programmable washing device simulating household drum washing was designed and developed, microfibers and indigo dyes released from denim washing were quantitatively detected, and we have also developed a novel method for estimating the release of microfibers during washing. The effects of washing time, washing temperature, and washing load on microfiber and indigo dye release from denim were explored. The results showed that the effect of washing load on microfiber and indigo dye release was greater than washing temperature and washing time. The research findings indicate that with an increase in washing time (35-95 min) and washing load (100-250 g), the shedding of microfibers and indigo dye significantly increases, reaching peak release levels of 343.6 μg/g fabric and 0.027 mg/L, respectively. However, there is a decreasing trend in the release of microfibers and indigo dye when the washing temperature exceeds 50 °C. Furthermore, our data suggests that an increase in washing load leads to a significant change in the number of microfibers (from 978 items/g fabric to 1997 items/g fabric) and their mass (from 156.87 μg/g fabric to 343.56 μg/g fabric). The influence of washing time, washing temperature, and washing load on microfiber length shows relatively small fluctuations within the range of 600-900 µm. This study provides new ideas and methods for estimating the release of microfiber and indigo dye in denim washing around the world.
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Affiliation(s)
- Xu Zhao
- School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China
| | - Zehua Ren
- School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China
| | | | - Yinghua Li
- Faculty of Education, Huaibei Institute of Technology, Huaibei 235000, China
| | - Chaoyu Zhang
- School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China
| | | | - Lihui An
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Bo Zhu
- School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China
| | - Hongbo Wang
- School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China.
| | - Jianli Liu
- School of Textile Science and Engineering, Jiangnan University, Wuxi 214021, China.
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21
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Xie J, Huang Q, Xie H, Liu J, Tian S, Cao R, Yang M, Lin J, Han L, Zhang D. Hyaluronic acid/inulin-based nanocrystals with an optimized ratio of indigo and indirubin for combined ulcerative colitis therapy via immune and intestinal flora regulation. Int J Biol Macromol 2023; 252:126502. [PMID: 37625742 DOI: 10.1016/j.ijbiomac.2023.126502] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Indigo (IND) and indirubin (INB) have demonstrated a synergistic effect in treating ulcerative colitis at a ratio of 7.5:1. However, the colon mucus layer, a critical physiological barrier against external threats, is also a biological barrier, limiting the potential for effective drug delivery to the lamina propria for regulating inflammatory cells. Inspired by the potential of Hyaluronic acid (HA), to enhance cellular uptake by inflammatory cells, and Pluronic® F127 (F127), known for overcoming the mucus barrier, this study innovatively developed INB/IND nanosuspensions by co-modifying with F127 and HA. Moreover, inulin serves a dual purpose as a spray protective agent and a regulator of intestinal flora. Therefore, it was incorporated into INB/IND nanosuspensions for subsequent spray drying, resulting in the preparation of INB/IND nanocrystals (INB/IND-NC). The mucus penetration of INB/IND-NC was 24.30 times that of the control group. Besides, INB/IND-NC exhibited enhanced cellular uptake properties proximately twice that of Raw INB/IND. Importantly, INB/IND-NC exhibited improved therapeutic efficacy in DSS-induced mice by regulating the expression of cytokines, regulating immune responses via downregulating the expression of macrophages, neutrophils, and dendritic cells and maintaining intestinal flora homeostasis. Our study provides a new perspective for applying natural products for treating inflammatory diseases.
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Affiliation(s)
- Jin Xie
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qi Huang
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Huijuan Xie
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jun Liu
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Shimin Tian
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Ruiyi Cao
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Ming Yang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Junzhi Lin
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China.
| | - Li Han
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Dingkun Zhang
- State Key Laboratory of Characteristic Chinese Drug Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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Sato R, Matsumoto K, Kinugasa H, Uchida D, Horiguchi S, Kato H, Otsuka M. Usefulness of the artificial intelligence-mediated virtual chromoendoscopy in peroral cholangioscopy. Endoscopy 2023; 55:E971-E972. [PMID: 37604438 PMCID: PMC10442202 DOI: 10.1055/a-2142-4555] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Affiliation(s)
- Ryosuke Sato
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
| | - Kazuyuki Matsumoto
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
| | - Hideaki Kinugasa
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
| | - Daisuke Uchida
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
| | - Shigeru Horiguchi
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
| | - Hironari Kato
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
| | - Motoyuki Otsuka
- Department of Gastroenterology and Hepatology, Okayama University Hospital, Okayama, Japan
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23
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Shi DD, Kaelin WG. The INDIGO trial: Precision medicine finally comes to glioma. Neuro Oncol 2023; 25:1918-1919. [PMID: 37698505 PMCID: PMC10628926 DOI: 10.1093/neuonc/noad162] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Indexed: 09/13/2023] Open
Affiliation(s)
- Diana D Shi
- Department of Radiation Oncology, Dana-Farber/Brigham and Women’s Cancer Center, Boston, Massachusetts, USA
| | - William G Kaelin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
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24
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Sendogdular ST, Sendogdular L. Ce-doped TiO 2-zeolite fibers: visible light-driven photocatalysts for indigo dye degradation. Environ Sci Pollut Res Int 2023; 30:113688-113703. [PMID: 37851264 DOI: 10.1007/s11356-023-30406-x] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 10/08/2023] [Indexed: 10/19/2023]
Abstract
Indigo dye is a poisonous dye that threatens human health by polluting the environment. Therefore, we prepared a visible light-sensitive photocatalyst to eliminate indigo dye especially from water sources. In this study, sol-gel and electrospinning methods have been performed to synthesize Ce-doped TiO2-zeolite fibers for indigo degradation. The structural and optical properties of the synthesized fibers were investigated by XRD, SEM, EDX, and UV-Vis spectrophotometer techniques. It has been shown that 3% Ce-doped TiO2/zeolite fibers have the highest photocatalytic activity with 100% degradation after 150 h, showing that the light absorption of TiO2 expands into the visible light area by Ce doping and absorption into the zeolite. The recyclability analyses of the spent photocatalyst exhibited 87.0% degradation of indigo after four cycles, demonstrating the stability of the fiber. An effective photocatalyst has been obtained by improving the photocatalytic and electrochemical properties thanks to the fibers' high surface area and the zeolite's porous structure. Based on these findings, the study reveals the significant potential of Ce-doped TiO2/zeolite fibers for the purification of wastewater under visible light.
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Affiliation(s)
- Selda Topcu Sendogdular
- Department of Materials Science and Engineering, Faculty of Engineering, Erciyes University, Kayseri, 38039, Turkey.
- ERNAM-Erciyes University Nanotechnology Application and Research Center, Kayseri, 38039, Turkey.
| | - Levent Sendogdular
- Department of Materials Science and Engineering, Faculty of Engineering, Erciyes University, Kayseri, 38039, Turkey
- ERNAM-Erciyes University Nanotechnology Application and Research Center, Kayseri, 38039, Turkey
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25
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Paiva RA, Queiroz FL, França Neto PR, Costa BXMDA, Cardoso LAB, Estrada DML, Mota FFDA, Lacerda Filho A. Polyp detection in the cecum and ascending colon by dye based chromoendoscopy - Is its routine use justified? Rev Col Bras Cir 2023; 50:e20233562. [PMID: 37851759 PMCID: PMC10519701 DOI: 10.1590/0100-6991e-20233562-en] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/02/2023] [Indexed: 10/20/2023] Open
Abstract
INTRODUCTION colonoscopy is the best method for detecting polyps, with a reduction in colorectal cancer mortality of 29% and reaching 47% for distal tumors. However, it fails to demonstrate a significant reduction in proximal colon cancer mortality, and is the most common segment with interval neoplasm. The present study aimed to evaluate the impact on detection of polyps of a second sequential evaluation of cecum and ascending colon, with or without the use of indigo carmine chromoendoscopy. METHODS prospective, non-randomized clinical trial. Patients were divided into two groups. The first (G1) underwent a routine colonoscopy, followed by a second endoscopy assessment of ascending colon and cecum. The second group (G2) underwent a routine colonoscopy, followed by a second assessment of the ascending colon and cecum with indigo carmine chromoendoscopy. RESULTS In total, 203 patients were analyzed, 101 in the G1 and 102 in the G2. Newer polyps were identified in both groups after the second assessment with a significantly higher number of polyps detected in the patients in the G2 (p=0.0001). The number of patients who had at least one polyp in the two endoscopic assessments was significantly higher in the G2 (53 or 52% vs 27 or 26.7%, p=0.0002). In the second endoscopic assessment, the number of polyps found was also significantly higher in the G2 (50 or 76.9%) compared to the G1 (15 or 23.1%), p<0.0001. CONCLUSIONS the second assessment with dye-based chromoendoscopy increases the detection of polyps in the ascending colon and cecum.
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26
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Du J, Li Y, Huang Y, Zhang D, Li L. Characterization of a novel monooxygenase originating from a deep-sea sediment metagenomic library. Appl Microbiol Biotechnol 2023; 107:6237-6249. [PMID: 37581624 DOI: 10.1007/s00253-023-12719-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 07/12/2023] [Accepted: 08/01/2023] [Indexed: 08/16/2023]
Abstract
Oxygenases are important biocatalysts to produce many industrially important biomolecules. Here, a novel oxygenase, named MoxA, was identified through screening of a deep-sea sediment metagenomic library. Sequence analysis showed MoxA contains 424 amino acid residues with a predicated molecular mass of 46.9 kDa. Multiple sequence alignment and phylogenetic analysis indicated the sequence might be a new member of monooxygenase subfamily. A recombinant MoxA was obtained through the functional expression of moxA gene in Escherichia coli. Characterization of the purified MoxA indicated that it is an alkaline oxygenase showing maximal activity at pH 8.0. The optimal temperature of MoxA was 37 ℃, and it retained more than 70% of its initial activity after 1 h at 20-50 ℃ exhibiting good thermostability. Furthermore, effect of metal ions and organic solvents on enzymatic activity was investigated, and the results showed that the activity of MoxA was enhanced by Cu2+, Zn2+, Co2+ and Mg2+ at 1 mM, and by Co2+, Ca2+ and Mg2+ at 5 mM. Moreover, the recombinant strain harboring MoxA was used as a whole-cell biocatalyst for the efficient biosynthesis of indigo showing promising conversion efficiency. The biochemical properties of MoxA indicated that it would provide great contribution for the indigo bioproduction. KEY POINTS: • A novel monooxygenase from a metagenomic library was characterized. • The activity of MoxA was enhanced by metal ions at 1 mM and 5 mM. • MoxA has an optimal temperature of 37 ℃ and exhibited high conversion capacity.
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Affiliation(s)
- Jikun Du
- Central Research Laboratory, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, 518104, China.
| | - Yuanhua Li
- Central Research Laboratory, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Shenzhen, 518104, China
- Traditional Chinese Medicine and New Drug Research Institute, Department of Pharmacology, Guangdong Medical University, Dongguan, 523808, China
| | - Yali Huang
- College of Fundamental Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Dawei Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Li Li
- Traditional Chinese Medicine and New Drug Research Institute, Department of Pharmacology, Guangdong Medical University, Dongguan, 523808, China.
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27
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Yang X, Tang J, Su J, Yang X, Yang M, Yang X, Ji Q, He Y, Han L, Zhang D. High-Quality Indigo Naturalis Obtained with Automatic Foam Separation. ACS Appl Mater Interfaces 2023; 15:43272-43281. [PMID: 37669429 DOI: 10.1021/acsami.3c04112] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Indigo Naturalis is not only an ancient plant dye but also a famous herbal medicine with antibacterial, anti-inflammatory, and anticancer properties. In traditional processes, thousands of manual stirring separate the high-quality Indigo Naturalis from the crude pulp system. However, this method is time-consuming and labor-intensive, resulting in an unstable quality and low yield, which cannot meet the requirements of modern industrial production. In this study, foam-separation technology was used to increase the industrial applicability of high-quality Indigo Naturalis. The process parameters were optimized based on the content of active ingredients, skin irritation effects, and antioxidative stress activity. The results showed that the optimal process of the foam separation achieved the liquid level difference of 40 cm and the foaming intensity of 0.35 MPa. Compared with the original sample, the indigo and indirubin contents in purified Indigo Naturalis were 1.6 and 3 times higher, the total ash content decreased from 86 to 70%, the pH value decreased from 12.18 to 9.71, and the leachate doubled. Animal experiments suggested the significantly reduced irritation (p < 0.01) and enhanced antioxidative stress activity (p < 0.01) of Indigo Naturalis after foam separation. Therefore, the foam-separation equipment developed in this study enabled the refinement of active ingredients in Indigo Naturalis, which greatly improved the production efficiency and quality.
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Affiliation(s)
- Xin Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Jun Tang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Juan Su
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xin Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Ming Yang
- State Key Laboratory of Innovation Medicine and High Efficiency and Energy Saving Pharmaceutical Equipment, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, PR China
| | - Xiangbo Yang
- Yaan Xunkang Pharmaceutical Co., Ltd, Yaan, Sichuan 625000, PR China
| | - Qisen Ji
- Yaan Xunkang Pharmaceutical Co., Ltd, Yaan, Sichuan 625000, PR China
| | - Yanan He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Li Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Dingkun Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
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Kumar R, Janbandhu SY, Sukhadeve GK, Gedam RS. Visible light assisted surface plasmon resonance triggered Ag/ZnO nanocomposites: synthesis and performance towards degradation of indigo carmine dye. Environ Sci Pollut Res Int 2023; 30:98619-98631. [PMID: 36053425 DOI: 10.1007/s11356-022-22745-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
Water pollution caused by organic compounds, generated from different industries, has gained attention worldwide today. In this regard, significant efforts have been made for a suitable dye degradation technology. Zinc oxide (ZnO)-based photocatalysts are considered novel materials to degrade organic effluents in contaminated water. The facile synthesis of Ag/ZnO nanocomposites and its application for the enhanced degradation of indigo carmine (IC) dye under visible light irradiation is reported in this paper. The prepared photocatalysts were characterized using various analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron (XPS) spectroscopy, FTIR, Raman, impedance study, UV-Vis, and photoluminescence (PL). Prepared Ag/ZnO nanocomposites were tested for degradation of IC dye in visible light. The degradation efficiency of IC dye was found to be 95.71% in 120 min, with a rate constant of 0.02021 min-1. This improved photocatalytic activity of Ag/ZnO nanocomposites was mainly due to the absorption of visible light caused by surface plasmon resonance (SPR) derived from Ag nanoparticles (NPs) and electron-hole separation. Radical trapping experiments suggest that holes (h+) and superoxide radical (O2•-) are the key factors in photocatalytic IC dye degradation.
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Affiliation(s)
- Rahul Kumar
- Department of Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India
| | | | - Gaurav K Sukhadeve
- Department of Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India
| | - Rupesh S Gedam
- Department of Physics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.
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Cessur A, Albayrak İ, Demirci T, Göktürk Baydar N. Silver and salicylic acid-chitosan nanoparticles alter indole alkaloid production and gene expression in root and shoot cultures of Isatis tinctoria and Isatis ermenekensis. Plant Physiol Biochem 2023; 202:107977. [PMID: 37639984 DOI: 10.1016/j.plaphy.2023.107977] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/24/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Isatis spp. are well-known for their industrial significance due to natural sources of indigotin and indirubin, important indole alkaloids, used in the dye and pharmaceutical industries. In this study, silver nanoparticles (AgNP) and salicylic acid-chitosan nanoparticles (SA-CNP) were synthesized and applied to enhance the production of indigotin and indirubin in shoot and root cultures of Isatis tinctoria and Isatis ermenekensis. Different doses of AgNP and SA-CNP were administered to three-week-old shoot and root cultures, and the effects were assessed at 12, 24, and 48 h. The harvested samples were analyzed to quantify indigotin and indirubin levels. Furthermore, the expression levels of It-TSA and CYP79B2 genes, known to be involved in indole alkaloid biosynthesis, were determined. In I. tinctoria roots, the highest levels of indigotin and indirubin were observed after applying 150 mg L-1 of SA-CNP for 48 h while in I. ermenekensis shoots, indigotin and indirubin reached the maximum levels with the application of 8 mg L-1 AgNP for 48 h. NP application had no remarkable effects on the accumulation of indigotin and indirubin in I. tinctoria shoots and I. ermenekensis roots compared to controls. Additionally, shoot cultures demonstrated superior indirubin production, which significantly increased with AgNP applications. The gene expression analysis also exhibited significant correlations with the changes in indigotin and indirubin levels. The findings of this study lay the groundwork for enhancing in vitro production of indigotin and indirubin in Isatis species through NP applications, and for developing high-capacity production strategies by determining optimal dosages in scale-up studies.
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Affiliation(s)
- Alper Cessur
- Department of Agricultural Biotechnology, Faculty of Agriculture, Isparta University of Applied Sciences, 32270, Isparta, Turkey
| | - İlknur Albayrak
- Department of Agricultural Biotechnology, Faculty of Agriculture, Isparta University of Applied Sciences, 32270, Isparta, Turkey
| | - Tunahan Demirci
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Süleyman Demirel University, 32260, Isparta, Turkey.
| | - Nilgün Göktürk Baydar
- Department of Agricultural Biotechnology, Faculty of Agriculture, Isparta University of Applied Sciences, 32270, Isparta, Turkey
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Jacomini D, Bussler L, da-Conceição Silva JL, Maller A, Kadowaki MK, Simão RDCG. Biopolishing of denim by the recombinant xylanase II of Caulobacter crescentus. Braz J Microbiol 2023; 54:1559-1564. [PMID: 37440124 PMCID: PMC10484820 DOI: 10.1007/s42770-023-01056-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 06/28/2023] [Indexed: 07/14/2023] Open
Abstract
Denim, also known as jeans, is a fabric made up of braided cotton threads dyed indigo blue, whose fibers contain approximately 10% of non-cellulosic impurities that reduce its commercial value. Microbial enzymes can act in the cleaning and desizing processes of jeans, improving their color, softness, and covering capacity. The recombinant Xylanase II (XynA2) from the aquatic bacterial Caulobacter crescentus (C. crescentus), previously characterized in terms of its biochemical features, was applied to the biotreatment of jeans to clean and degum it. The biotreatment performance was evaluated in terms of tissue weight loss, amount of reducing sugars released and analysis of the images obtained by scanning electron microscopy (SEM). Biotreated tissues, at 12 and 24 h, showed a dry weight loss of 4.9 and 6.6%, respectively. The reducing sugars amount released after XynA2 action over the jean's fibers showed statistically significant values when compared with each other and with their respective controls. SEM images clearly shown that the fabric treated for 12 h presented a smooth and polished surface, while the fabric treated for 24 h showed the cotton fibers broken, displaying severe damage to the textile. The best treatment for the jeans was in the presence of 1 U mg-1 XynA2 at pH 8 and 60 °C during 12 h. In conclusion, XynA2 of C. crescentus was satisfactorily applied for the biopolishing of denim jeans being a more sustainable alternative to the use of chemical and abrasive processes to obtain the same effects.
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Affiliation(s)
- Débora Jacomini
- Centro de Ciências Médicas e Farmacêuticas - CCMF, Laboratório de Bioquímica Molecular - LaBioqMol, Universidade Estadual do Oeste do Paraná- UNIOESTE, Rua Universitária, 2069 -, Cascavel, PR, 85814-110, Brazil
| | - Larissa Bussler
- Centro de Ciências Exatas e Tecnológicas, Laboratório de Bioquímica Molecular- LaBioqMol, Universidade Estadual do Oeste do Paraná, Paraná, Cascavel, Brazil
| | - José Luis da-Conceição Silva
- Centro de Ciências Médicas e Farmacêuticas - CCMF, Laboratório de Bioquímica Molecular - LaBioqMol, Universidade Estadual do Oeste do Paraná- UNIOESTE, Rua Universitária, 2069 -, Cascavel, PR, 85814-110, Brazil
| | - Alexandre Maller
- Centro de Ciências Médicas e Farmacêuticas - CCMF, Laboratório de Bioquímica Molecular - LaBioqMol, Universidade Estadual do Oeste do Paraná- UNIOESTE, Rua Universitária, 2069 -, Cascavel, PR, 85814-110, Brazil
| | - Marina Kimiko Kadowaki
- Centro de Ciências Médicas e Farmacêuticas - CCMF, Laboratório de Bioquímica Molecular - LaBioqMol, Universidade Estadual do Oeste do Paraná- UNIOESTE, Rua Universitária, 2069 -, Cascavel, PR, 85814-110, Brazil
| | - Rita de Cássia Garcia Simão
- Centro de Ciências Médicas e Farmacêuticas - CCMF, Laboratório de Bioquímica Molecular - LaBioqMol, Universidade Estadual do Oeste do Paraná- UNIOESTE, Rua Universitária, 2069 -, Cascavel, PR, 85814-110, Brazil.
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Mandjewil A, Ngueagni PT, Siewe JM, Fadimatou NM, Vieillard J, Dotto GL, Fotsing PN, Woumfo ED. Correlation between cocoa shell modifications by CTAB and its dye adsorption properties. Environ Sci Pollut Res Int 2023; 30:94474-94484. [PMID: 37535279 DOI: 10.1007/s11356-023-28671-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 07/03/2023] [Indexed: 08/04/2023]
Abstract
Cocoa shell was modified whit sodium hydroxide (NaOH) and cationic surfactant cetyltrimethylammonium bromide (CTAB) to increase surface functionality, surface area, and positive charge density. The prepared adsorbent CC-OH-CTAB was used to remove indigo carmine (IC) and bromocresol green (BCG) dyes from water. The optimal pH for IC and BCG adsorption were 2 and 4, respectively. The equilibrium was attained after a contact time of 30 min for IC and 120 min for BCG. The maximum adsorption capacity (Qmax) of IC and BCG obtained was 85.1 mg g-1 and 192.7 mg g-1, respectively. The Liu isotherm model best described the equilibrium results. The adsorption kinetics model showed that IC and BCG adsorption onto CC-OH-CTAB followed the pseudo-first-order and pseudo-second-order model, respectively. The regeneration and reusability experiments indicated that CC-OH-CTAB had much stability and excellent performance meanwhile repeatedly used. Finally, the insertion of CTAB on the CC-OH surface proved to be an excellent way to improve the adsorption performance of this material concerning dyes.
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Affiliation(s)
- Albert Mandjewil
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
| | - Patrick Tsopbou Ngueagni
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
| | - Jean Mermoz Siewe
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
| | | | - Julien Vieillard
- Université de Rouen Normandie, 55, rue Saint Germain, 27000, Rouen, Evreux, France
| | - Guilherme Luiz Dotto
- Université de Rouen Normandie, 55, rue Saint Germain, 27000, Rouen, Evreux, France
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 97105-900, Santa Maria, RS, 1000-7, Brazil
| | - Patrick Nkuigue Fotsing
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
- Université de Rouen Normandie, 55, rue Saint Germain, 27000, Rouen, Evreux, France
| | - Emmanuel Djoufac Woumfo
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon.
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Liu X, Ye H, Huang H, Yang M, Han L, Xu R, Zhang D. Fast Inspection of Quality of Indigo Naturalis by Multiple Light Scattering. J Vis Exp 2023. [PMID: 37607092 DOI: 10.3791/64961] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023] Open
Abstract
Quality control of Chinese herbal medicine is a crucial component of Chinese herbal medicine research and development. Faced with the challenges of modernization and internationalization of Chinese herbal medicine, it is urgent to establish thorough and effective procedures for quality identification of Chinese herbal medicine, and there is an urgent need for new analytical and testing techniques that are efficient, accurate, and environmentally friendly. Multiple light scattering is a cutting-edge and analytical method that can accurately and rapidly assess the quality of Chinese herbal medicine without altering the nature or state of the sample or using organic reagents. Indigo Naturalis is considered a good remedy for pediatric hyperthermia, psoriasis, leukemia, and ulcerative colitis. In this study, the process of addition of Indigo Naturalis powder in water was recorded precisely using a multiple light scattering instrument. The qualitative and quantitative measurements of the instrument can be used to accurately capture the overall trajectory and sinking behavior of Indigo Naturalis powder into water and to establish a rapid evaluation method for the quality of Indigo Naturalis with the transmission and backscattering spectrograms of the sample as qualitative indicators and stability index as a quantitative indicator. The analytical technique based on multiple light scattering provides a fast, accurate, green, and environmentally friendly method for the quality evaluation of Indigo Naturalis and supports the development and transformation of high-quality Indigo Naturalis.
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Affiliation(s)
- Xuemei Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine
| | - Hui Ye
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine
| | - Haozhou Huang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine
| | - Ming Yang
- State Key Laboratory of Innovation Drug and Efficient Energy-saving Pharmaceutical Equipment, Jiangxi University of Traditional Chinese Medicine
| | - Li Han
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine
| | - Runchun Xu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine;
| | - Dingkun Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine;
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Raza HA, Horowitz J, Yuriditsky E. Indigo ® Aspiration System for thrombectomy in pulmonary embolism. Future Cardiol 2023; 19:469-475. [PMID: 37746827 DOI: 10.2217/fca-2022-0134] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023] Open
Abstract
Anticoagulation is mainstay therapy for patients with acute pulmonary embolism while systemic thrombolysis is reserved for those with hemodynamic instability. Over the last decade, percutaneous interventional options have entered the landscape aimed to achieve rapid pharmacomechanical pulmonary artery recanalization. The Penumbra Indigo® Aspiration System (Penumbra Inc., CA, USA) is a US FDA-approved large-bore aspiration thrombectomy device for the treatment of pulmonary embolism. Recent data has demonstrated improved radiographic end points with low rates of major adverse events in cases of intermediate-risk pulmonary embolism. In this review article, we outline device technology, applications, evidence and future directions.
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Affiliation(s)
- Hassan A Raza
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NYU Langone Health, Mineola, NY 11501, USA
| | - James Horowitz
- Department of Medicine, Division of Cardiology, NYU Langone Health, NY 10016, USA
| | - Eugene Yuriditsky
- Department of Medicine, Division of Cardiology, NYU Langone Health, NY 10016, USA
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Ghasemzadeh MS, Ahmadpour A. Design and synthesis of high performance magnetically separable exfoliated g-C 3N 4/γ-Fe 2O 3/ZnO yolk-shell nanoparticles: a novel and eco-friendly photocatalyst toward removal of organic pollutants from water. Environ Sci Pollut Res Int 2023; 30:80162-80180. [PMID: 37294493 DOI: 10.1007/s11356-023-28113-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Herein, a new visible-light active exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell nanoparticles (NPs) was synthesized as a magnetically separable photocatalyst. For an in-depth understanding of the magnetic photocatalyst's structural, morphological, and optical properties, the products were extensively characterized with FT-IR, XRD, TEM, HRTEM, FESEM, EDS, EDS-mapping, VSM, DRS, EIS, and photocurrent. The photocatalyst was then utilized to degrade Levofloxacin (LEVO) and Indigo Carmine (IC) by visible light at room temperature. The exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell NPs photocatalyst revealed 80% and 95.6% degradation efficiency for Levofloxacin and Indigo Carmine within 25 and 15 min, respectively. In addition, the optimal factors such as concentration, loading of photocatalyst, and pH were also assessed. Levofloxacin degradation mechanistic studies showed that electrons and holes significantly contribute to the photocatalytic process of photocatalyst degradation. In addition, after 5 times regeneration, exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell NPs remained as an excellent magnetic photocatalyst for the eco-friendly degradation of Levofloxacin and Indigo Carmine (76% and 90%), respectively. The superior photocatalytic performance of exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell nanoparticles (NPs) was mostly ascribed to the synergistic advantages of stronger visible light response, larger specific surface area, and the more effective separation and transfer of photogenerated charge carriers. Based on these results, the highly effective magnetic photocatalyst achieved better results than numerous studied catalysts in the literature. The degradation of Levofloxacin and Indigo Carmine under environmentally friendly conditions can be achieved using exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell NPs (V) as an efficient and green photocatalyst. The magnetic photocatalyst was characterized by spectroscopic and microscopic methods, revealing a spherical shape and particle size of 23 nm. Additionally, the magnetic photocatalyst could be separated from the reaction mixture by a magnet without significantly reducing its catalytic activity.
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Affiliation(s)
- Maryam Sadat Ghasemzadeh
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48944, Iran
- Industrial Catalysts, Adsorbents and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48974, Iran
| | - Ali Ahmadpour
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48944, Iran.
- Industrial Catalysts, Adsorbents and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48974, Iran.
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Spath P, Pasqui E, Angiletta D, Spinazzola A, Chegai F, Isernia G, Lepidi S, Silingardi R, de Donato G, Gargiulo M. Penumbra Indigo Percutaneous Aspiration Thrombectomy System in the treatment of Aortic Endograft Iliac Limb Occlusion: Results from an Italian Multicentre Registry. Eur J Vasc Endovasc Surg 2023; 66:77-84. [PMID: 37084878 DOI: 10.1016/j.ejvs.2023.04.008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 03/12/2023] [Accepted: 04/12/2023] [Indexed: 04/23/2023]
Abstract
OBJECTIVE This study aimed to evaluate the safety and effectiveness of the Penumbra Indigo percutaneous aspiration thrombectomy (PAT) system in the clinical presentation of iliac limb occlusion (ILO) after endovascular aortic repair (EVAR). METHODS A retrospective, observational, multicentre study conducted in eight Italian vascular centres. Consecutive patients presenting with ILO after EVAR were eligible. To assess vessel revascularisation, Thrombo-aspiration In Peripheral Ischaemia (TIPI) classification (score 0-3) was used at presentation (t1), after PAT (t2), and after adjunctive procedures (t3). Successful revascularisation was considered TIPI 2-3 (near complete or complete). Primary intra-operative outcomes were technical success (TS) of Indigo PAT and combined TS of PAT associated with adjunctive procedures when needed. Primary follow up outcomes were safety and effectiveness at one, six, and 12 months. RESULTS From September 2019 to December 2021, there were 48 ILO and 17 patients (35%) [median age 75 years, IQR 71, 83 years; male, 14 (82%); urgent, 8 (47%)] were treated and enrolled. The median time after primary EVAR was 24 months (IQR 0, 42 months). The median clot age from ILO diagnosis to PAT was three days (IQR 1, 12 days). Ten patients (59%) presented with limb threatening ischaemia. At t1, TIPI 0 and 1 was present in 13 (76%) and four (24%) cases, respectively. At t2, primary TS (TIPI 2-3) was achieved in 14 cases (82%) after Indigo PAT (p < .001). Fifteen patients (88%) required adjunctive procedures (14 re-linings, one surgical patch angioplasty). At t3, combined TS was achieved in 16 cases (94%). Intra-operative complication included one (6%) distal embolisation, treated successfully. The 30 day mortality was one case (6%) due to pneumonia. At one, six, and 12 months, clinical success was 100% without ILO recurrence. The median follow up was 23 months (IQR 11, 41 months): at 18 months, survival and freedom from re-intervention were 91 ± 8% and 90 ± 9%, respectively. CONCLUSION This study reports for the first time the efficacy and safety of Penumbra Indigo PAT for ILO after EVAR, with promising technical and clinical success up to one year.
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Affiliation(s)
- Paolo Spath
- Vascular Surgery, University of Bologna, DIMEC, Bologna, Italy; Department of Vascular Surgery, Hospital "Infermi" Rimini, AUSL Romagna, Rimini, Italy.
| | - Edoardo Pasqui
- Vascular Surgery, University of Siena, DSMCN, Siena, Italy
| | | | - Angelo Spinazzola
- Interventional Radiology, Unit of Radiology, ASST-Crema, Crema, Italy
| | - Fabrizio Chegai
- Vascular and Interventional Radiology, Unit of Radiology, Hospital Viterbo, Viterbo, Italy
| | - Giacomo Isernia
- Department of Vascular and Endovascular Surgery, University of Perugia, Perugia, Italy
| | - Sandro Lepidi
- Department of Vascular Surgery, University Hospital of Trieste, Trieste, Italy
| | - Roberto Silingardi
- Department Vascular Surgery of Modena, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Mauro Gargiulo
- Vascular Surgery, University of Bologna, DIMEC, Bologna, Italy; Bologna Metropolitan Vascular Surgery Unit, IRCCS Azienda Ospedaliero-Universitaria S. Orsola, Bologna, Italy
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Cho DH, Kim HJ, Oh SJ, Hwang JH, Shin N, Bhatia SK, Yoon JJ, Jeon JM, Yang YH. Strategy for efficiently utilizing Escherichia coli cells producing isobutanol by combining isobutanol and indigo production systems. J Biotechnol 2023; 367:62-70. [PMID: 37019156 DOI: 10.1016/j.jbiotec.2023.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/05/2023]
Abstract
Isobutanol is a potential biofuel, and its microbial production systems have demonstrated promising results. In a microbial system, the isobutanol produced is secreted into the media; however, the cells remaining after fermentation cannot be used efficiently during the isobutanol recovery process and are discarded as waste. To address this, we aimed to investigate the strategy of utilizing these remaining cells by combining the isobutanol production system with the indigo production system, wherein the product accumulates intracellularly. Accordingly, we constructed E. coli systems with genes, such as acetolactate synthase gene (alsS), ketol-acid reductoisomerase gene (ilvC), dihydroxyl-acid dehydratase (ilvD), and alpha-ketoisovalerate decarboxylase gene (kivD), for isobutanol production and genes, such as tryptophanase gene (tnaA) and flavin-containing monooxygenase gene (FMO), for indigo production. This system produced isobutanol and indigo simultaneously while accumulating indigo within cells. The production of isobutanol and indigo exhibited a strong linear correlation up to 72 h of production time; however, the pattern of isobutanol and indigo production varied. To our knowledge, this study is the first to simultaneously produce isobutanol and indigo and can potentially enhance the economy of biochemical production.
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Affiliation(s)
- Do Hyun Cho
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyun Jin Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Suk Jin Oh
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jeong Hyeon Hwang
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Nara Shin
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; Institute for Ubiquitous Information Technology and Applications, Konkuk University, Seoul, South Korea
| | - Jeong-Jun Yoon
- Green & Sustainable Materials R&D Department, Korea Institute of Industrial Technology (KITECH), Cheonan, Republic of Korea
| | - Jong-Min Jeon
- Green & Sustainable Materials R&D Department, Korea Institute of Industrial Technology (KITECH), Cheonan, Republic of Korea.
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; Institute for Ubiquitous Information Technology and Applications, Konkuk University, Seoul, South Korea.
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Chaudhary RG, Sonkusare V, Bhusari G, Mondal A, Potbhare A, Juneja H, Abdala A, Sharma R. Preparation of mesoporous ThO 2 nanoparticles: Influence of calcination on morphology and visible-light-driven photocatalytic degradation of indigo carmine and methylene blue. Environ Res 2023; 222:115363. [PMID: 36716808 DOI: 10.1016/j.envres.2023.115363] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/10/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
The present article reports the synthesis of thoria nanoparticles (ThO2 NPs) via sol-gel process and examines the effect of calcination temperature of ThO2 on the morphology and photocatalytic degradation of indigo carmine (IC) and methylene blue (MB) under visible-light. As-synthesized white crystals of ThO2 were subjected to calcination at different temperatures, viz. 700 °C (TH-700), 800 °C (TH-800), and 900 °C (TH-900). The effect of calcination temperature on the structural, morphological, thermal, surface area-porosity, and optical properties of ThO2 NPs were investigated by diverse analytical techniques. XRD patterns show the cubic-space group Fm-3m (225) with parameter a = 5.597 Å and reveals crystallite sizes increased with calcination temperature. The bandgap energy was found to be 1.85 eV, 2.33 eV, and 2.71 eV for TH-700, TH-800, and TH-900 NPs, respectively, calculated by Kubelka-Munk (KM) plot. SEM and TEM unveil that the sample TH-700 calcined at a low temperature of 700 °C yields assembled nanosheets, while at higher temperatures, i.e., 800 °C (TH-800) and 900 °C (TH-900), produces agglomerated nanomaterials. Further, TH-700 sample exhibits enhanced photocatalytic degradation within 120 min for both IC and MB dye than TH-800 and TH-900 counterparts. Among the dyes, IC shows improved photocatalytic efficiency than MB for TH-700, owing to the increased optical absorption and improved separation of photogenerated charge carriers. The reusability study of TH-700 reveals that the catalysts were stable up to four successive cycles with no drastic changes in photocatalytic efficiency. Also, systematic photodisintegration of IC was investigated by Liquid chromatography-mass spectrometry (LC-MS).
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Affiliation(s)
- Ratiram Gomaji Chaudhary
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, And Science and Commerce, Kamptee, 441001, India.
| | - Vaishali Sonkusare
- Post Graduate Teaching Department of Chemistry, Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur, 440033, India.
| | - Ganesh Bhusari
- Research and Development Division, Solar Industries India Limited, Nagpur, 440023, India.
| | - Aniruddha Mondal
- Division of Materials Science, Lulea University of Technology, Lulea, 97187, Sweden.
| | - Ajay Potbhare
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, And Science and Commerce, Kamptee, 441001, India.
| | - Harjeet Juneja
- Post Graduate Teaching Department of Chemistry, Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur, 440033, India.
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A and M University at Qatar POB, 23784, Doha, Qatar.
| | - Rohit Sharma
- Department of Rasa Shastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India.
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Wang J, Wei J, Leng Y, Dai Y, Xie C, Zhang Z, Zhu M, Peng X. Rational Design of High-Performance Hemithioindigo-Based Photoswitchable AIE Photosensitizer and Enabling Reversible Control Singlet Oxygen Generation. Biosensors (Basel) 2023; 13:324. [PMID: 36979535 PMCID: PMC10046834 DOI: 10.3390/bios13030324] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
A photosensitizer furnishing with reversible control singlet oxygen generation (1O2) is highly desirable for precise photodynamic therapy (PDT), lessening non-specific harm to healthy tissues. Here, a novel photoswitchable aggregation-induced emission (AIE) photosensitizer based on a triarylamine (TPA)-modified hemithioindigo (HTI), 6Br-HTI-TPA-OMe, was rationally designed. The triarylamine AIE photosensitizing moiety and HTI switch unit were covalently linked in one molecule, permitting reversible regulation of 1O2 production. The photophysical evaluations revealed that 6Br-HTI-TPA-OMe possessed excellent AIE properties and Z/E photoswitch performance in different solvents. Additionally, the amphiphilic phospholipid-fabricated nanoparticles (NPs) also exhibited photochromic behavior in water. The Z-NPs initiated the generation of 1O2 upon 520 nm light-emitting diode (LED) irradiation, but after switching to E-NPs, the generation of 1O2 was inhibited by the competitive energy transfer, suggesting that reversible Z/E isomerization could photocontrol 1O2 generation. The in vitro anti-tumor experiment verified that the 6Br-HTI-TPA-OMe can act as a photoswitchable AIE photosensitizer. This is the first report on the photoswitchable AIE photosensitizer of HTI-based molecules, to the best of our knowledge.
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Affiliation(s)
- Junjie Wang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jianshuang Wei
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yuehong Leng
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yanfeng Dai
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Changqiang Xie
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Zhihong Zhang
- Britton Chance Center and MoE Key Laboratory for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
| | - Mingqiang Zhu
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xingzhou Peng
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou 570228, China
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Nguyen Tien H, Bui DN, Manh TD, Tram NT, Ngo VD, Mwazighe FM, Hoang HY, Le VT. Electrochemical degradation of indigo carmine, P-nitrosodimethylaniline and clothianidin on a fabricated Ti/SnO 2-Sb/Co-βPbO 2 electrode: Roles of radicals, water matrices effects and performance. Chemosphere 2023; 313:137352. [PMID: 36436577 DOI: 10.1016/j.chemosphere.2022.137352] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/22/2022] [Accepted: 11/20/2022] [Indexed: 06/16/2023]
Abstract
In this study, the kinetic degradation of several typical organic pollutants was performed on a synthetic electrode (Ti/SnO2-Sb/Co-βPbO2). The surface structure and the electrochemical properties of the prepared electrode were investigated, confirming the successful preparation of the electrode using an electrochemical deposition method. The outer layer (Co-βPbO2) played an important role in reducing the resistance of the electrode and improving its degradation efficiency. The results showed that indigo carmine (IC), p-nitrosodimethylaniline (RNO), and clothianidin (CLO) were effectively degraded within 20 min of electrolysis. Their degradation in the electrochemical process followed the first-order kinetic model with the degradation rate constant of IC being higher than that of RNO and CLO. This was proved by the difference in the reactivity of the target pollutants toward oxidizing radicals (i.e., •OH, SO4•-, and Cl•). Their second-order rate constant towards radicals were in the range of 109 - 1010 M-1 s-1 with the highest value being that for IC: k·OH,IC = 15.1 × 109 M-1 s-1 and [Formula: see text] = 7.4 × 109 M-1 s-1. The study calculated the contribution of some oxidizing species, including direct electron transfer (DET), •OH, SO4•-, and other reactive oxygen species (ROS). Solution pH, supporting electrolyte, and water matrix affected the degradation efficiency of pollutants and the contribution of the oxidizing species. Br- and I- ions enhanced the degradation rate of organic pollutants, while Fe2+, HCO3-, and humic acid (HA) reduced it. In addition, the toxicity, total organic carbon (TOC) removal, mineralization current efficiency (MCE), energy consumption, recyclability and stability of the prepared electrode were studied, suggesting that the prepared Ti/SnO2-Sb/Co-βPbO2 is a good candidate for treating organic pollutants using the electrochemical oxidation process.
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Affiliation(s)
- Hoang Nguyen Tien
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang St., Da Nang, Lien Chieu, 550000, Viet Nam.
| | - Dinh Nhi Bui
- Faculty of Chemical and Environmental Technology, Viet Tri University of Industry, Phu Tho, Viet Nam
| | - Tran Duc Manh
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang St., Da Nang, Lien Chieu, 550000, Viet Nam
| | - Nc Thuy Tram
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang St., Da Nang, Lien Chieu, 550000, Viet Nam
| | - Vu Dinh Ngo
- Faculty of Chemical and Environmental Technology, Viet Tri University of Industry, Phu Tho, Viet Nam
| | - Fredrick M Mwazighe
- Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P. O. Box 30197, 00100, Nairobi, Kenya
| | - Hien Y Hoang
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, 55000, Viet Nam; The Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang, 55000, Viet Nam
| | - Van Thuan Le
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, 55000, Viet Nam; The Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang, 55000, Viet Nam
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Poddar K, Sarkar D, Sarkar A. Construction of bacterial consortium for efficient degradation of mixed pharmaceutical dyes. Environ Sci Pollut Res Int 2023; 30:25226-25238. [PMID: 35066834 DOI: 10.1007/s11356-021-18217-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
Synthetic dyes are established colorants in the pharmaceutical industries for the coating and coloration of tablets, capsules, etc. to mark the specific formulation and dosage, improve the stability, and esthetic value. The pharmaceuticals manufacturing process releases large volumes of dye-containing wastewaters, contributing to eco-toxic concerns related to different health risks. In this study, biodegradation of amaranth, sunset yellow, tartrazine, indigo carmine, and quinoline yellow dyes was investigated in the mixed environment. Initially, 24 tolerant bacterial strains were isolated from pharmaceutical wastewater samples, among which 19 strains were found to be non-virulent. Five different consortia were constructed by considering the 19 strains among which C1 consisting of strains DY7, 10, 11, and 18 was found to be the most potential consortium with an overall efficiency of 96.65% dye degradation in the presence of glucose after 15 days. The strains DY7, 10, 11, and 18 were identified as members of the Klebsiella genus by 16S rRNA partial sequencing. The cell wall structure, carbohydrate utilization profile, and metabolic characterization were conducted on the selected strains of C1. Among the 25 different antibiotics, DY7 and DY11 exhibited the highest zone of growth inhibition in the presence of cefixime, and DY10 was restricted by chloramphenicol whereas DY18 was found sensitive to ceftazidime/tazobactam.
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Affiliation(s)
- Kasturi Poddar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India
| | - Debapriya Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India.
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Wakade G, Lin S, Saha P, Kumari U, Daniell H. Abatement of microfibre pollution and detoxification of textile dye - Indigo by engineered plant enzymes. Plant Biotechnol J 2023; 21:302-316. [PMID: 36208023 PMCID: PMC9884014 DOI: 10.1111/pbi.13942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/04/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Microfibres (diameter <5 mm) and textile dyes released from textile industries are ubiquitous, cause environmental pollution, and harm aquatic flora, fauna, animals and human life. Therefore, enzymatic abatement of microfibre pollution and textile dye detoxification is essential. Microbial enzymes for such application present major challenges of scale and affordability to clean up large scale pollution. Therefore, enzymes required for the biodegradation of microfibres and indigo dye were expressed in transplastomic tobacco plants through chloroplast genetic engineering. Integration of laccase and lignin peroxidase genes into the tobacco chloroplast genomes and homoplasmy was confirmed by Southern blots. Decolorization (up to 86%) of samples containing indigo dye (100 mg/L) was obtained using cp-laccase (0.5% plant enzyme powder). Significant (8-fold) reduction in commercial microbial cellulase cocktail was achieved in pretreated cotton fibre hydrolysis by supplementing cost effective cellulases (endoglucanases, ß-glucosidases) and accessory enzymes (swollenin, xylanase, lipase) and ligninases (laccase lignin peroxidase) expressed in chloroplasts. Microfibre hydrolysis using cocktail of Cp-cellulases and Cp-accessory enzymes along with minimal dose (0.25% and 0.5%) of commercial cellulase blend (Ctec2) showed 88%-89% of sugar release from pretreated cotton and microfibres. Cp-ligninases, Cp-cellulases and Cp-accessory enzymes were stable in freeze dried leaves up to 15 and 36 months respectively at room temperature, when protected from light. Use of plant powder for decolorization or hydrolysis eliminated the need for preservatives, purification or concentration or cold chain. Evidently, abatement of microfibre pollution and textile dye detoxification using Cp-enzymes is a novel and cost-effective approach to prevent their environmental pollution.
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Affiliation(s)
- Geetanjali Wakade
- Department of Basic and Translational Sciences, School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Shina Lin
- Department of Basic and Translational Sciences, School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Prasenjit Saha
- Department of Basic and Translational Sciences, School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Uma Kumari
- Department of Basic and Translational Sciences, School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Henry Daniell
- Department of Basic and Translational Sciences, School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
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Li Y, Lin Y, Wang F, Wang J, Shoji O, Xu J. Construction of Biocatalysts Using the P450 Scaffold for the Synthesis of Indigo from Indole. Int J Mol Sci 2023; 24:ijms24032395. [PMID: 36768714 PMCID: PMC9917246 DOI: 10.3390/ijms24032395] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023] Open
Abstract
With the increasing demand for blue dyes, it is of vital importance to develop a green and efficient biocatalyst to produce indigo. This study constructed a hydrogen peroxide-dependent catalytic system for the direct conversion of indole to indigo using P450BM3 with the assistance of dual-functional small molecules (DFSM). The arrangements of amino acids at 78, 87, and 268 positions influenced the catalytic activity. F87G/T268V mutant gave the highest catalytic activity with kcat of 1402 min-1 and with a yield of 73%. F87A/T268V mutant was found to produce the indigo product with chemoselectivity as high as 80%. Moreover, F87G/T268A mutant was found to efficiently catalyze indole oxidation with higher activity (kcat/Km = 1388 mM-1 min-1) than other enzymes, such as the NADPH-dependent P450BM3 (2.4-fold), the Ngb (32-fold) and the Mb (117-fold). Computer simulation results indicate that the arrangements of amino acid residues in the active site can significantly affect the catalytic activity of the protein. The DFSM-facilitated P450BM3 peroxygenase system provides an alternative, simple approach for a key step in the bioproduction of indigo.
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Affiliation(s)
- Yanqing Li
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
- Key Lab of Sustainable Development of Polar Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Lab for Marine Drugs and Byproducts of Pilot National Lab for Marine Science and Technology, Qingdao 266071, China
| | - Yingwu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Fang Wang
- Key Lab of Sustainable Development of Polar Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Lab for Marine Drugs and Byproducts of Pilot National Lab for Marine Science and Technology, Qingdao 266071, China
| | - Jinghan Wang
- Key Lab of Sustainable Development of Polar Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Lab for Marine Drugs and Byproducts of Pilot National Lab for Marine Science and Technology, Qingdao 266071, China
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Osami Shoji
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
- Correspondence: (O.S.); (J.X.)
| | - Jiakun Xu
- Key Lab of Sustainable Development of Polar Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Lab for Marine Drugs and Byproducts of Pilot National Lab for Marine Science and Technology, Qingdao 266071, China
- Correspondence: (O.S.); (J.X.)
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Jancik-Prochazkova A, Michalkova H, Heger Z, Pumera M. Hydrogen Bonding Nanoarchitectonics of Organic Pigment-Based Janus Microrobots with Entering Capability into Cancer Cells. ACS Nano 2023; 17:146-156. [PMID: 36538781 DOI: 10.1021/acsnano.2c05585] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Autonomous microrobots are at the forefront of biomedical research as they are expected to be applied for specific tasks at the intracellular level such as cargo delivery, sensing, molecular manipulation, among others. Here, we report on a preparation of microrobots based on quinacridone and indigo, which are members of the organic hydrogen-bonded pigment family. The microrobots were fabricated by asymmetric platinum deposition on corresponding quinacridone and indigo microparticles that possessed a homogeneous size and shape distribution. The microrobots exhibited autonomous locomotion in the presence of hydrogen peroxide, which was further supported by UV irradiation. The organic pigment-based microrobots were studied in the presence of mouse colorectal carcinoma cells, and it was observed that they were internalized into the cells. Internalization was visualized using confocal laser scanning microscopy. This study reveals the possibility of fabricating hydrogen-bonded organic pigment-based microrobots for biomedical applications by employing the principles of nanoarchitectonics.
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Affiliation(s)
- Anna Jancik-Prochazkova
- Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, Prague 166 28, Czech Republic
| | - Hana Michalkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1/1665, Brno 613 00, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1/1665, Brno 613 00, Czech Republic
| | - Martin Pumera
- Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, Prague 166 28, Czech Republic
- Faculty of Electrical Engineering and Computer Science, VSB - Technical University of Ostrava, 17. listopadu 2172/15, Ostrava 708 00, Czech Republic
- Department of Medical Research, China Medical University Hospital, China Medical University, No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
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Yuan X, Gong W, Hu B. Virtual indigo carmine dyeing: New artificial intelligence-based chromoendoscopy technique. Dig Endosc 2023; 35:e8-e10. [PMID: 36300847 DOI: 10.1111/den.14448] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 09/30/2022] [Indexed: 01/17/2023]
Affiliation(s)
- Xianglei Yuan
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Gong
- Department of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Bing Hu
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
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Kaplan G, Seferoğlu Z. The Synthetic Approaches for Preparation of Indigo and Applications in Denim Industry. Curr Org Synth 2023; 20:361-364. [PMID: 36043751 DOI: 10.2174/1570179419666220830091956] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/18/2022] [Accepted: 04/25/2022] [Indexed: 11/22/2022]
Abstract
This paper describes indigo chemistry and its brief scientific history beginning with the first characterization and chemical synthesis of indigo via various precursors such as isatin, cinnamic acid, 2-nitrobenzaldehyde, anthranilic acid, N-phenylglycine, aniline, and indole. Furthermore, alternative methods such as eco-friendly microbial synthesis of indigo using a variety of enzymes are reported: Cytochrome P450 monooxygenases, flavin-containing monooxygenases, and unspecific peroxygenases. Subsequently, the application of indigo in the denim industry, reduction methods (chemical, electrochemical, enzymatic and catalytic) and dyeing methods (all parameters in dyeing, ring dye) are discussed. In addition, the main reason for the use of indigo in the denim industry is briefly explained.
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Affiliation(s)
- Gökhan Kaplan
- Department of Chemistry, Faculty of Science, Gazi University, Yenimahalle, Ankara, 06560, Turkey
- Sanko Tekstil İşletmeleri Sanayi ve Ticaret A.Ş. Isko Sb, Bursa, 16400, Askanmor, Turkey
| | - Zeynel Seferoğlu
- Department of Chemistry, Faculty of Science, Gazi University, Yenimahalle, Ankara, 06560, Turkey
- Department of Chemistry and Biology, Siegen University, 57068 Siegen, Germany
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Huy BT, Nhi PT, Vy NTT, Khanh DNN, Tho NTM, Thang NQ, Sy DT, Minh BQ, Phuong NTK. Design of novel p-n heterojunction ZnBi 2O 4-ZnS photocatalysts with impressive photocatalytic and antibacterial activities under visible light. Environ Sci Pollut Res Int 2022; 29:84471-84486. [PMID: 35788474 DOI: 10.1007/s11356-022-21810-w] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Heterojunction structures have attracted considerable attention for enhancing electron migration across interfaces. In this report, ZnBi2O4-ZnS(12%) heterojunction photocatalysts was found to be capable of degrading over 94% of indigo carmine in a 15 mg/L solution within 90 min of visible light irradiation at a catalytic dose of 1.0 g/L and pH 4. Furthermore, more than 82% of the total organic carbon (TOC) was removed, confirming the almost complete mineralization of the indigo carmine by ZnBi2O4-ZnS(12%). Moreover, the photocatalyst exhibited high stability and retained its photocatalytic activity up to the 5th cycle of operation without photocorrosion. The dramatic enhancement in the visible-light photocatalytic performance of the ZnBi2O4-ZnS heterojunctions over pristine ZnBi2O4 and ZnS was due to the formation of a superior heterojunction between the n-type semiconductor, ZnS, and the p-type semiconductor, ZnBi2O4. This heterojunction facilitated the separation and transfer of the photoinduced electron at the interfaces of the two semiconductors. Furthermore, the ZnBi2O4-ZnS(12%) exhibited an inhibition zone of 15 mm against fecal Escherichia coli (ATCC 8739), with a minimum inhibitory concentration (MIC) of 150 μg/mL. These results demonstrated that the novel ZnBi2O4-ZnS p-n-type heterojunction is a promising visible-light active photo-catalyst for the degradation of organic pollutants and inhibition of fecal E. coli.
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Affiliation(s)
- Bui The Huy
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh, Vietnam
- Department of Chemistry, Changwon National University, Changwon, 51140, Korea
| | - Pham Tuan Nhi
- Hochiminh City Institute of Resources Geography, Tay Nguyen Institute of Scientific Research, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Ngo Thi Tuong Vy
- Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Dang Nguyen Nha Khanh
- Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Nguyen Thi Mai Tho
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh, Vietnam
| | - Nguyen Quoc Thang
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh, Vietnam
| | - Do Trung Sy
- Institute of Chemistry, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Bui Quang Minh
- Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Nguyen Thi Kim Phuong
- Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam.
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Mazzella A, Spaggiari L. Invited commentary: indigo carmine and lipiodol mixture marking in lung segmentectomy. Eur J Cardiothorac Surg 2022; 62:6711393. [PMID: 36135805 DOI: 10.1093/ejcts/ezac469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 09/21/2022] [Indexed: 11/14/2022] Open
Affiliation(s)
- Antonio Mazzella
- Division of Thoracic Surgery, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Lorenzo Spaggiari
- Division of Thoracic Surgery, IEO, European Institute of Oncology IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
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Li S, Shi Y, Huang H, Tong Y, Wu S, Wang Y. Fermentation Blues: Analyzing the Microbiota of Traditional Indigo Vat Dyeing in Hunan, China. Microbiol Spectr 2022; 10:e0166322. [PMID: 35708341 PMCID: PMC9430710 DOI: 10.1128/spectrum.01663-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 05/25/2022] [Indexed: 11/21/2022] Open
Abstract
Traditional indigo dyeing through anaerobic fermentation has recently gained worldwide attention in efforts to address concerns regarding the sustainability of industrial indigo dyeing and the impact of toxic reducing agents such as sodium dithionite (Na2S2O4) on human health and the ecological environment. Intriguingly, changes in the microbiota during indigo fermentation are known to potently affect the onset of indigo reduction, and thus elucidation of the microbial community transitions could help develop methods to control the initiation of indigo reduction. Here, we investigated the microbiota associated with the traditional indigo dyeing practiced in Hunan, China. Specifically, we identified the bacterial and fungal components of the microbiota at distinct stages in the indigo fermentation process by analyzing 16S rRNA gene and internal transcribed spacer sequences. Our analyses revealed two substantial changes in the microbiota during the traditional indigo fermentation process. The first change, which was probably caused by the introduction of Chinese liquor (featuring a high alcohol concentration), resulted in decreased bacterial diversity and increased proportions of Pseudomonas, Stenotrophomonas, and Bacillaceae family members. The second change, which could be attributed to the addition of specific plant species, led to an increase in the abundance of Alkalibacterium, Amphibacillus, the obligate anaerobe Turicibacter, the facultative anaerobe Enterococcus, and ZOR0006, as well as to a decrease in the pH and redox potential values. Our results indicate that the specific plant mixture included in the procedure here could be used as an effective additive to accelerate the initiation of indigo reduction during the fermentation process. To the best of our knowledge, this is the first report revealing the fungal diversity during the indigo fermentation process and, furthermore, showing that the fungal diversity has remained in transition despite the relatively stable bacterial diversity in the proper indigo fermentation process. Although traditional indigo fermentation in China is challenging to manage, we can benefit from local knowledge of the fermentation process, and understanding the scientific bases of traditional indigo fermentation will facilitate the development of environmentally friendly procedures. IMPORTANCE Chemical reducing agents included in modern indigo dyeing to initiate indigo reduction can be harmful to both human health and the environment. Given that traditional indigo dyeing involves natural fermentation in a dye vat using natural organic additives without the use of toxic chemicals and that changes in the microbiota during traditional indigo fermentation potently affect the onset of indigo reduction, elucidation of these microbial community transitions could help develop methods to control the initiation of indigo reduction. This study on the microbiota associated with the traditional indigo dyeing practiced in Hunan, China, has identified the bacterial and fungal communities at distinct stages of the indigo fermentation process. Notably, the addition of specific plant species might yield the desired microbial communities and appropriate fermentation conditions, which could be used as an effective additive to accelerate the initiation of indigo reduction. This study has also revealed the fungal diversity during the indigo fermentation process for the first time and shown that the fungal diversity has remained in transition despite the relatively stable bacterial diversity. Thus, this work provides new insights into the traditional indigo fermentation process used in China and substantially enhances current efforts devoted to designing environmentally friendly methods for industrial indigo dyeing.
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Affiliation(s)
- Shan Li
- Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, China
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Yuru Shi
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Hui Huang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Yan Tong
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Shaohua Wu
- Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming, China
| | - Yuhua Wang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
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Huang X, Chen R, Zhao L. Diagnostic Value of Endoscopic Narrow-Band Imaging Technique in Early Gastric Cancer and Precancerous Lesions. Scanning 2022; 2022:9205150. [PMID: 36111267 PMCID: PMC9448607 DOI: 10.1155/2022/9205150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/05/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Objective To investigate the diagnostic value of endoscopic narrow-band imaging technique in early gastric cancer and precancerous lesions. Methods A total of 100 patients with recurrent upper gastrointestinal symptoms in our hospital from January 2017 to January 2022 were selected and divided into group A and group B according to the random number table method, with 50 cases in each group. Group A received white light endoscopy, and group B received narrow-band imaging technology combined with endoscopy. Narrow-band imaging combined with magnifying endoscopy was used to stain the area with suspicious mucosal lesions with indigo carmine and magnified observation. Results The endoscopic image clarity of group B was significantly better than that of group A in terms of lesion outline, gastric pit, and microvascular morphology (P < 0.05). There were 10 cases of early gastric cancer, 18 cases of benign lesions, and 9 cases of gastric cancer (nonearly stage); 17 cases of precancerous lesions, 12 cases of early gastric cancer, 13 cases of benign lesions, and 6 cases of gastric cancer (nonearly stage) were diagnosed by ordinary white light endoscopy. Pathological results confirmed that among the 50 patients in group B, there were 15 cases of precancerous lesions, 11 cases of early gastric cancer, 17 cases of benign lesions, and 7 cases of gastric cancer (nonearly stage). Among the 50 patients in group A, 16 were precancerous lesions, 11 were early gastric cancer, 15 were benign lesions, and 8 were gastric cancer (non early stage). In the diagnosis of precancerous lesions and early gastric cancer, the diagnostic consistency, sensitivity, and specificity of group B were better than those of group A (P < 0.05); NBI combined with endoscopy in the diagnosis of precancerous lesions and early gastric cancer (kappa = 0.860, kappa = 0.883) was more consistent with pathological diagnosis than common white light endoscopy (kappa = 0.433, kappa = 0.535). Conclusion The value of narrow-band imaging technology combined with endoscopy in the diagnosis of precancerous lesions and early gastric cancer is better than that of ordinary white light endoscopy, and it can be widely used in clinical practice.
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Affiliation(s)
- Xianxin Huang
- Dongdong Medical Group Downtown Hospital, Huangshi, Hubei 435000, China
| | - Rong Chen
- Dongdong Medical Group Downtown Hospital, Huangshi, Hubei 435000, China
| | - Liang Zhao
- Dongdong Medical Group Downtown Hospital, Huangshi, Hubei 435000, China
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Ainiwaer A, Liang Y, Ye X, Gao R. Characterization of a Novel Fe 2+ Activated Non-Blue Laccase from Methylobacterium extorquens. Int J Mol Sci 2022; 23:ijms23179804. [PMID: 36077196 PMCID: PMC9456135 DOI: 10.3390/ijms23179804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 11/09/2022] Open
Abstract
Herein, a novel laccase gene, Melac13220, was amplified from Methylobacterium extorquens and successfully expressed in Escherichia coli with a molecular weight of approximately 50 kDa. The purified Melac13220 had no absorption peak at 610 nm and remained silent within electron paramagnetic resonance spectra, suggesting that Melac13220 belongs to the non-blue laccase group. Both inductively coupled plasma spectroscopy/optical emission spectrometry (ICP-OES) and isothermal titration calorimetry (ITC) indicated that one molecule of Melac13220 can interact with two iron ions. Furthermore, the optimal temperature of Melac13220 was 65 °C. It also showed a high thermolability, and its half-life at 65 °C was 80 min. Melac13220 showed a very good acid environment tolerance; its optimal pH was 1.5. Cu2+ and Co2+ can slightly increase enzyme activity, whereas Fe2+ could increase Melac13220′s activity five-fold. Differential scanning calorimetry (DSC) indicated that Fe2+ could also stabilize Melac13220. Unlike most laccases, Melac13220 can efficiently decolorize Congo Red and Indigo Carmine dyes even in the absence of a redox mediator. Thus, the non-blue laccase from Methylobacterium extorquens shows potential application value and may be valuable for environmental protection, especially in the degradation of dyes at low pH.
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Affiliation(s)
| | | | | | - Renjun Gao
- Correspondence: ; Tel.: +86-431-18604313058; Fax: +86-431-85155200
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