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Joint Measurements of Leukocyte Elastase and Myeloperoxidase Promote Identification of the State of Neutrophils in Diabetic Patients. 白细胞弹性酶和髓过氧化物酶的联合测量促进了糖尿病患者中性粒细胞状态的识别。
BioResearch Open Access Pub Date : 2020-08-20 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2020.0012
Michael Alexandrovski, Soimita Suciu, Jakob Alexandrovski
{"title":"Joint Measurements of Leukocyte Elastase and Myeloperoxidase Promote Identification of the State of Neutrophils in Diabetic Patients.","authors":"Michael Alexandrovski,&nbsp;Soimita Suciu,&nbsp;Jakob Alexandrovski","doi":"10.1089/biores.2020.0012","DOIUrl":"https://doi.org/10.1089/biores.2020.0012","url":null,"abstract":"<p><p>The clinic of diabetes mellitus (DM) offers a number of hypotheses about the leading role of polymorphonuclear neutrophils (PMNs) in both oxidative stress and diabetic complications. However, the results of numerous studies are extremely controversial. Why is it so? We appreciated the clinical significance of simultaneous measurement data of several PMN parameters, which must complement each other. For this purpose, myeloperoxidase (MPO) and elastase (EL) were jointly analyzed in the blood plasma from 160 type 2 diabetes mellitus patients with high levels of HbA<sub>1c</sub>. A weakly positive correlation (<i>r</i> ∼ 0.56) was observed between MPO and EL analytical data, and any correlation between the concentrations of MPO/EL and HbA<sub>1c</sub> was absent. Medians of 160 measurements of MPO/EL concentrations were ∼103/190 ng/mL, and 95% of all results were in the range below 320/1016 ng/mL, respectively. The share of DM patients whose concentrations of MPO, EL, or either of two parameters exceeded the corresponding reference values was 65%, 80%, and 82.5%, respectively. These findings-a high intensity of neutrophil degranulation process-indicated that some diabetic conditions promote the transfer of PMNs to an \"arousal\" or \"subactivation\" state, which is identical or similar to their activation, providing <i>in vivo</i> an almost inexhaustible source of extremely \"aggressive\" MPO and EL. Thus, the conjoint MPO/EL measurements confirm the leading role of PMNs in the development of various complications of diabetes. The paradox is that the diagnostic significance of MPO/EL as independent parameters in diabetic patients is unambiguous for a number of reasons.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2020.0012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38362030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Biobanking for Translational Diabetes Research in India. 印度转化型糖尿病研究的生物银行。
BioResearch Open Access Pub Date : 2020-08-19 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2019.0052
Charitha Gangadharan, Soniya Wills, Rajani Kanth Vangala, Alben Sigamani
{"title":"Biobanking for Translational Diabetes Research in India.","authors":"Charitha Gangadharan,&nbsp;Soniya Wills,&nbsp;Rajani Kanth Vangala,&nbsp;Alben Sigamani","doi":"10.1089/biores.2019.0052","DOIUrl":"https://doi.org/10.1089/biores.2019.0052","url":null,"abstract":"<p><p>India is declared as the diabetic capital of the world. Clinically well-annotated blood samples will advance diabetes research for better diagnostic and treatment methods. Building a disease-specific biobank with high-quality peripheral blood mononuclear cells (PBMCs) and clinical follow-up data system will serve as a good platform for clinical research in diabetes. Processing and storage of high-quality biospecimen for translational research in diabetes demand the implementation of good clinical laboratory practices. \"Certification or accreditation programs\" that improve biorepository processes and frameworks are lacking in Indian context. To sustain and translate the research into clinical practice, good governance of the biobank and financial resources is required. For ethical issues related to health needs of the people and participants in the research, issues related to research process, translational research, and commercialization, data sharing should be addressed. For India to be an innovation and sustainable country Indian government is supporting translational research facilities, including biobanks. India has developed biobanks for various diseases; however, diabetes-specific research biorepository is lacking. Given the dangers of diabetic burden, India should set up a diabetes disease-specific repository learning from the global organizations and customize to the needs of Indian context. It is important to have private agencies get involved to develop biobanks and future research as there are commercial goals to translate research into practice. New technologies of specimen storing and preservation, data management, and data sharing should be adopted for developing cost-effective long-standing disease-specific population biobank in India.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2019.0052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38362974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An Alginate-Based Hydrogel with a High Angiogenic Capacity and a High Osteogenic Potential. 一种海藻酸盐基水凝胶,具有高血管生成能力和高成骨潜能。
BioResearch Open Access Pub Date : 2020-06-05 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2020.0010
Anaïs Barre, Marie Naudot, Fanny Colin, Henri Sevestre, Louison Collet, Bernard Devauchelle, Stéphane Lack, Jean-Pierre Marolleau, Sophie Le Ricousse
{"title":"An Alginate-Based Hydrogel with a High Angiogenic Capacity and a High Osteogenic Potential.","authors":"Anaïs Barre,&nbsp;Marie Naudot,&nbsp;Fanny Colin,&nbsp;Henri Sevestre,&nbsp;Louison Collet,&nbsp;Bernard Devauchelle,&nbsp;Stéphane Lack,&nbsp;Jean-Pierre Marolleau,&nbsp;Sophie Le Ricousse","doi":"10.1089/biores.2020.0010","DOIUrl":"https://doi.org/10.1089/biores.2020.0010","url":null,"abstract":"<p><p>In bone tissue engineering, autologous cells are combined with osteoconductive scaffolds and implanted into bone defects. The major challenge is the lack of post-implantation vascular growth into biomaterial. The objective of the present study was to develop a new alginate-based hydrogel that enhances the regeneration of bone defects after surgery. The viability of human bone marrow-derived mesenchymal stem cells (BM-MSCs) or human endothelial cells (ECs) cultured alone or together on the hydrogel was analyzed for 24 and 96 h. After seeding, the cells self-assembled and aggregated to form clusters. For functional validation, empty or cellularized hydrogel matrices were implanted ectopically at subcutaneous sites in <i>nude</i> mice. After 2 months, the matrices were explanted. Transplanted human cells were present, and we observed vessels expressing human von Willebrand factor (resulting from the incorporation of transplanted ECs into neovessels and/or the differentiation of BM-MSCs into ECs). The addition of BM-MSCs improved host vascularization and neovessel formation from human cells, relative to ECs alone. Although we did not observe bone formation, the transplanted BM-MSCs were able to differentiate into osteoblasts. This new biomaterial provided an appropriate three-dimensional environment for transplanted cells and has a high angiogenic capacity and an osteogenic potential.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2020.0010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38133113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Electrical Stimulation Decreases Dental Pulp Stem Cell Osteo-/Odontogenic Differentiation. 电刺激会降低牙髓干细胞的骨性/牙源性分化
BioResearch Open Access Pub Date : 2020-05-27 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2020.0002
Karla Mychellyne Costa Oliveira, Liudmila Leppik, Khyati Keswani, Sreeraj Rajeev, Mit B Bhavsar, Dirk Henrich, John H Barker
{"title":"Electrical Stimulation Decreases Dental Pulp Stem Cell Osteo-/Odontogenic Differentiation.","authors":"Karla Mychellyne Costa Oliveira, Liudmila Leppik, Khyati Keswani, Sreeraj Rajeev, Mit B Bhavsar, Dirk Henrich, John H Barker","doi":"10.1089/biores.2020.0002","DOIUrl":"10.1089/biores.2020.0002","url":null,"abstract":"<p><p>Dental pulp stem cells (DPSCs) have great potential for use in tissue engineering (TE)-based dental treatments. Electrical stimulation (EStim) has been shown to influence cellular functions that could play an important role in the success of TE treatments. Despite many recent studies focused on DPSCs, few have investigated the effect EStim has on these cells. The aim of this research was to investigate the effects of direct current (DC) EStim on osteo-/odontogenic differentiation of DPSCs. To do so cells were isolated from male Sprague Dawley rats (7-8 weeks old), and phenotype characterization and multilineage differentiation analysis were conducted to verify their \"stemness.\" Different voltages of DC EStim were administrated 1 h/day for 7 days, and the effect of EStim on DPSC osteo-/odontogenic differentiation was assessed by measuring calcium and collagen deposition, alkaline phosphatase (ALP) activity, and expression of osteo- and odontogenic marker genes at days 7 and 14 of culture. We found that while 10 and 50 mV/mm of EStim had no effect on cell number or metabolic activity, 100 mV/mm caused a significant reduction in cell number, and 150 mV/mm resulted in cell death. Despite increased gene expression of osteo-/odontogenic gene markers, <i>Osteocalcin</i>, <i>RunX2</i>, <i>BSP</i>, and <i>DMP1</i>, at day 7 in EStim treated cells, 50 mV/mm of EStim decreased collagen deposition and ALP activity at both time points, and calcium deposition was found to be lower at day 14. In conclusion, under the conditions tested, EStim appears to impair DPSC osteo-/odontogenic differentiation. Additional studies are needed to further characterize and understand the mechanisms involved in DPSC response to EStim, with an eye toward its potential use in TE-based dental treatments.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7337168/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38133112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Movement Analysis with Inertial Measurement Unit Sensor After Surgical Treatment for Distal Radius Fractures. 惯性测量单元传感器在桡骨远端骨折手术后的运动分析。
BioResearch Open Access Pub Date : 2020-05-21 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2019.0035
Benedetta Zucchi, Massimiliano Mangone, Francesco Agostini, Marco Paoloni, Luisa Petriello, Andrea Bernetti, Valter Santilli, Ciro Villani
{"title":"Movement Analysis with Inertial Measurement Unit Sensor After Surgical Treatment for Distal Radius Fractures.","authors":"Benedetta Zucchi,&nbsp;Massimiliano Mangone,&nbsp;Francesco Agostini,&nbsp;Marco Paoloni,&nbsp;Luisa Petriello,&nbsp;Andrea Bernetti,&nbsp;Valter Santilli,&nbsp;Ciro Villani","doi":"10.1089/biores.2019.0035","DOIUrl":"https://doi.org/10.1089/biores.2019.0035","url":null,"abstract":"<p><p>Inertial measurement unit (IMU) has recently been used to evaluate a movement of a body segment to provide accurate information of movement's characteristics. IMU systems have been validated to successfully measure joint angle during upper limb range of motion (ROM). The study aimed to retrospectively evaluate, using an IMU, the ROM recovery of the wrist after surgical treatment for distal-radius fractures with Kirschner wire fixation (KWF) or with volar plate fixation (VPF) and screws. To assess pain in the wrist joint, muscle-fatigue (MF), and functional difficulties in activities of daily living, we evaluated the patients through patient-related wrist evaluation questionnaire (PRWE) scale, disability of the arm, shoulder and hand (DASH) scale, Hand Grip Strength (HGS), and surface electromyography (EMG). We used a single IMU composed of three-axis gyroscope, a three-axis accelerometer, and a magnetometer. We calculated the value of ROM as a percentage with respect to the unaffected wrist. We also recorded surface-EMG signals over biceps brachialis, flexor carpi radialis (FCR), extensor carpi radialis (ECR), and pronator teres muscles. Forty patients were recruited for our study. Ulnar deviation (UD) was significantly higher for VPF than for KWF (<i>p</i> = 0.017); supination was significantly higher for VPF than for KWF (<i>p</i> = 0.031). The percentage of decay of the median frequency of FCR of volar plate was significantly higher than KWF. The HGS of KWF was significantly higher than VPF. In literature, there were no significant differences between the two types of treatment at long-term follow-up. Our results demonstrate a superior efficacy of VPF in terms of ROM improvement in UD and supination, but for these patients, muscle fatigue is greater than the KWF group. Based on the data available, VPF is similar to KWF for the treatment of distal radius fractures. The IMU sensor could be used in the future to evaluate ROM after surgery during patient's rehabilitation and to compare the effects with stratified analysis regarding age and fracture type, paralleled with cost-effectiveness analysis.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2019.0035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37980562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Crimean-Congo Hemorrhagic Fever Virus: Advances in Vaccine Development. 克里米亚-刚果出血热病毒:疫苗开发进展。
BioResearch Open Access Pub Date : 2020-05-12 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2019.0057
Thomas Tipih, Felicity Jane Burt
{"title":"Crimean-Congo Hemorrhagic Fever Virus: Advances in Vaccine Development.","authors":"Thomas Tipih,&nbsp;Felicity Jane Burt","doi":"10.1089/biores.2019.0057","DOIUrl":"10.1089/biores.2019.0057","url":null,"abstract":"<p><p>Crimean-Congo hemorrhagic fever (CCHF) is a severe human disease with mortality rates of up to 30%. The disease is widespread in Africa, Asia, the Middle East and Eastern Europe. The last few years have seen disease emergence in Spain for the first time and disease re-emergence in other regions of the world after periods of inactivity. Factors, such as climate change, movement of infected ticks, animals, and changes in human activity, are likely to broaden endemic foci. There are therefore concerns that CCHF might emerge in currently nonendemic regions. The absence of approved vaccines or therapies heightens these concerns; thus Crimean-Congo hemorrhagic fever virus (CCHFV) is listed by the World Health Organization as a priority organism. However, the current sporadic nature of CCHF cases may call for targeted vaccination of risk groups as opposed to mass vaccinations. CCHF vaccine development has accelerated in recent years, partly because of the discovery of CCHF animal models. In this review, we discuss CCHF risk groups who are most likely to benefit from vaccine development, the merits and demerits of available CCHF animal models, and the various approaches which have been explored for CCHF vaccine development. Lastly, we present concluding remarks and research areas which can be further explored to enhance the available CCHFV vaccine data.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2019.0057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37980561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 35
Induced Pluripotent Stem Cells: Reprogramming Platforms and Applications in Cell Replacement Therapy. 诱导多能干细胞:重编程平台及其在细胞替代治疗中的应用。
BioResearch Open Access Pub Date : 2020-04-28 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2019.0046
Akram Al Abbar, Siew Ching Ngai, Nadine Nograles, Suleiman Yusuf Alhaji, Syahril Abdullah
{"title":"Induced Pluripotent Stem Cells: Reprogramming Platforms and Applications in Cell Replacement Therapy.","authors":"Akram Al Abbar, Siew Ching Ngai, Nadine Nograles, Suleiman Yusuf Alhaji, Syahril Abdullah","doi":"10.1089/biores.2019.0046","DOIUrl":"10.1089/biores.2019.0046","url":null,"abstract":"<p><p>The generation of induced pluripotent stem cells (iPSCs) from differentiated mature cells is one of the most promising technologies in the field of regenerative medicine. The ability to generate patient-specific iPSCs offers an invaluable reservoir of pluripotent cells, which could be genetically engineered and differentiated into target cells to treat various genetic and degenerative diseases once transplanted, hence counteracting the risk of graft versus host disease. In this context, we review the scientific research streams that lead to the emergence of iPSCs, the roles of reprogramming factors in reprogramming to pluripotency, and the reprogramming strategies. As iPSCs serve tremendous correction potentials for various diseases, we highlight the successes and challenges of iPSCs in cell replacement therapy and the synergy of iPSCs and <i>clustered regularly interspaced short palindromic repeats</i> (CRISPR)/Cas9 gene editing tools in therapeutics research.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2019.0046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37901729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 39
Goshajinkigan, a Traditional Japanese Medicine, Suppresses Voltage-Gated Sodium Channel Nav1.4 Currents in C2C12 Cells. 日本传统药物goshajinkagan抑制C2C12细胞中电压门控钠通道Nav1.4电流。
BioResearch Open Access Pub Date : 2020-04-27 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2019.0034
Ryota Imai, Shoichiro Horita, Yuko Ono, Keisuke Hagihara, Masaru Shimizu, Yuko Maejima, Kenju Shimomura
{"title":"Goshajinkigan, a Traditional Japanese Medicine, Suppresses Voltage-Gated Sodium Channel Nav1.4 Currents in C2C12 Cells.","authors":"Ryota Imai,&nbsp;Shoichiro Horita,&nbsp;Yuko Ono,&nbsp;Keisuke Hagihara,&nbsp;Masaru Shimizu,&nbsp;Yuko Maejima,&nbsp;Kenju Shimomura","doi":"10.1089/biores.2019.0034","DOIUrl":"https://doi.org/10.1089/biores.2019.0034","url":null,"abstract":"<p><p>Goshajinkigan (GJG) is a traditional Japanese Kampo medicine used clinically to treat muscle pain in Japan. However, its underlying mechanism remains unclear. Since voltage-gated sodium channel (Nav) 1.4 is involved in skeletal muscle contraction, we investigated the possibility that GJG may affect Nav1.4 currents. By using an electrophysiological technique on skeletal muscle cell line C2C12, we found that GJG suppresses Nav1.4 currents in C2C12 cells. It is suggested that GJG may improve skeletal muscle stiffness or cramps by inhibiting abnormal Nav1.4 excitation. GJG may act as a Nav1.4 blocker and may be useful to treat muscle stiffness and clamps as well as easing the pain.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1089/biores.2019.0034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37901792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Klotho Pathways, Myelination Disorders, Neurodegenerative Diseases, and Epigenetic Drugs. Klotho 通路、髓鞘形成障碍、神经退行性疾病和表观遗传药物。
BioResearch Open Access Pub Date : 2020-03-31 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2020.0004
Walter H Moos, Douglas V Faller, Ioannis P Glavas, David N Harpp, Iphigenia Kanara, Anastasios N Mavrakis, Julie Pernokas, Mark Pernokas, Carl A Pinkert, Whitney R Powers, Konstantina Sampani, Kosta Steliou, Demetrios G Vavvas, Robert J Zamboni, Krishna Kodukula, Xiaohong Chen
{"title":"Klotho Pathways, Myelination Disorders, Neurodegenerative Diseases, and Epigenetic Drugs.","authors":"Walter H Moos, Douglas V Faller, Ioannis P Glavas, David N Harpp, Iphigenia Kanara, Anastasios N Mavrakis, Julie Pernokas, Mark Pernokas, Carl A Pinkert, Whitney R Powers, Konstantina Sampani, Kosta Steliou, Demetrios G Vavvas, Robert J Zamboni, Krishna Kodukula, Xiaohong Chen","doi":"10.1089/biores.2020.0004","DOIUrl":"10.1089/biores.2020.0004","url":null,"abstract":"<p><p>In this review we outline a rationale for identifying neuroprotectants aimed at inducing endogenous Klotho activity and expression, which is epigenetic action, by definition. Such an approach should promote remyelination and/or stimulate myelin repair by acting on mitochondrial function, thereby heralding a life-saving path forward for patients suffering from neuroinflammatory diseases. Disorders of myelin in the nervous system damage the transmission of signals, resulting in loss of vision, motion, sensation, and other functions depending on the affected nerves, currently with no effective treatment. <i>Klotho</i> genes and their single-pass transmembrane Klotho proteins are powerful governors of the threads of life and death, true to the origin of their name, Fates, in Greek mythology. Among its many important functions, Klotho is an obligatory co-receptor that binds, activates, and/or potentiates critical fibroblast growth factor activity. Since the discovery of <i>Klotho</i> a little over two decades ago, it has become ever more apparent that when Klotho pathways go awry, oxidative stress and mitochondrial dysfunction take over, and age-related chronic disorders are likely to follow. The physiological consequences can be wide ranging, potentially wreaking havoc on the brain, eye, kidney, muscle, and more. Central nervous system disorders, neurodegenerative in nature, and especially those affecting the myelin sheath, represent worthy targets for advancing therapies that act upon Klotho pathways. Current drugs for these diseases, even therapeutics that are disease modifying rather than treating only the symptoms, leave much room for improvement. It is thus no wonder that this topic has caught the attention of biomedical researchers around the world.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7133426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37810301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cloning and Protein Expression of eccB5 Gene in ESX-5 System from Mycobacterium tuberculosis. 结核分枝杆菌 ESX-5 系统中 eccB5 基因的克隆和蛋白表达
BioResearch Open Access Pub Date : 2020-03-31 eCollection Date: 2020-01-01 DOI: 10.1089/biores.2019.0019
Siti Kurniawati, Ni Made Mertaniasih, Manabu Ato, Toshiki Tamura, Soedarsono Soedarsono, Aulanni'am Aulanni'am, Shigetarou Mori, Yumi Maeda, Tetsu Mukai
{"title":"Cloning and Protein Expression of <i>eccB<sub>5</sub></i> Gene in ESX-5 System from <i>Mycobacterium tuberculosis</i>.","authors":"Siti Kurniawati, Ni Made Mertaniasih, Manabu Ato, Toshiki Tamura, Soedarsono Soedarsono, Aulanni'am Aulanni'am, Shigetarou Mori, Yumi Maeda, Tetsu Mukai","doi":"10.1089/biores.2019.0019","DOIUrl":"10.1089/biores.2019.0019","url":null,"abstract":"<p><p><i>Mycobacterium tuberculosis</i> (<i>M. tuberculosis</i>) is the causative agent of tuberculosis in human. One of the major <i>M. tuberculosis</i> virulence factors is early secretory antigenic target of 6-kDa (ESAT-6), and EccB<sub>5</sub> protein encoded by <i>eccB<sub>5</sub></i> is one of its components. EccB<sub>5</sub> protein is a transmembrane protein in ESX-5 system. The aim of this study is to explore the characteristics of wild-type EccB<sub>5</sub> and its mutant form N426I. We expressed the EccB<sub>5</sub> protein by cloning the mutant and wild-type <i>eccB<sub>5</sub></i> gene in <i>Escherichia coli</i> (<i>E. coli</i>). We compared the protein structure of wild type and mutant form of EccB<sub>5</sub> and found changes in structure around Asn426 (loop structure) in wild type and around Ile426 (β-strand) in the mutant. The truncated recombinant protein of EccB<sub>5</sub> was successfully cloned and expressed using plasmid pCold I in <i>E. coli</i> DH5α and <i>E. coli</i> strain Rosetta-gami B (DE3) and purified as a 38.6 kDa protein by using the affinity column. There was no detectable adenosine triphosphatase activity in truncated forms of EccB<sub>5</sub> and its mutant. In conclusion, our study reveals successful cloning and protein expression of truncated form of eccB5 gene of <i>M. tuberculosis</i>. EccB<sub>5</sub> protein in ESX-5 system may be an important membrane component involved in the transport machinery of type VII secretion system, which is essential for growth and virulence.</p>","PeriodicalId":9100,"journal":{"name":"BioResearch Open Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7133456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37810298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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