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Mehla S, Singh Y, Kumar U, Balyan P, Singh KP, Dhankher OP. Overexpression of rice lectin receptor-like kinase, OsLec-RLK, confers salinity stress tolerance and increases seed yield in pigeon pea (Cajanus cajan (L.) Millsp.). PLANT CELL REPORTS 2024; 43:230. [PMID: 39251423 DOI: 10.1007/s00299-024-03314-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 08/10/2024] [Indexed: 09/11/2024]
Abstract
KEY MESSAGE OsLec-RLK overexpression enhances cell signalling and salt stress tolerance in pigeon pea, enhancing seed yield and harvest index and thus, enabling marginal lands to increase food and nutritional security. Lectin Receptor-like kinases (Lec-RLKs) are highly effective cell signaling molecules that counteract various stresses, including salt stress. We engineered pigeon pea by overexpressing OsLec-RLK gene for enhancing salt tolerance. The OsLec-RLK overexpression lines demonstrated superior performance under salt stress, from vegetative to reproductive phase, compared to wild types (WT). The overexpression lines had significantly higher K+/Na+ ratio than WT exposed to 100 mM NaCl. Under salt stress, transgenic lines showed higher levels of chlorophyll, proline, total soluble sugars, relative water content, and peroxidase and catalase activity than WT plants. Membrane injury index and lipid peroxidation were significantly reduced in transgenic lines. Analysis of phenological and yield attributes confirmed that the OsLec-RLK pigeon pea lines maintain plant vigor, with 10.34-fold increase in seed yield (per plant) and 4-5-fold increase in harvest index of overexpression lines, compared to wild type. Meanwhile, the overexpression of OsLec-RLK up-regulated the expression levels of histone deacetylase1, acyl CoA, ascorbate peroxidase, peroxidase, glutathione reductase and catalase, which were involved in the K+/Na+ homeostasis pathway. This study showed the potential of OsLec-RLK gene for increasing crop productivity and yields under salt stress and enabling the crops to be grown on marginal lands for increasing food and nutritional security.
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Affiliation(s)
- Sheetal Mehla
- Department of Molecular Biology and Biotechnology, College of Biotechnology, CCS Haryana Agricultural University, Hisar, 125004, India
| | - Yogita Singh
- Department of Molecular Biology and Biotechnology, College of Biotechnology, CCS Haryana Agricultural University, Hisar, 125004, India
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
| | - Upendra Kumar
- Department of Molecular Biology and Biotechnology, College of Biotechnology, CCS Haryana Agricultural University, Hisar, 125004, India.
- Department of Plant Science, Mahatma Jyotiba Phule Rohilkhand University, Bareilly, 243006, India.
| | - Priyanka Balyan
- Department of Botany, Deva Nagri P.G. College, CCS University, Meerut, 245206, India
| | - Krishna Pal Singh
- Biophysics Unit, College of Basic Sciences & Humanities, GB Pant University of Agriculture & Technology, Pantnagar, 263145, India
- Vice-Chancellor's Secretariat, Mahatma Jyotiba Phule Rohilkhand University, Bareilly, 243001, India
| | - Om Parkash Dhankher
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA.
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Vosoughi AR, Akbarzadeh A, Brevis S, Kordi Yoosefinejad A. Clinical and biomechanical comparison of suture-external button versus interference screw associated with V-Y advancement or turndown flaps for flexor hallucis longus transfer in chronic Achilles tendon rupture. Musculoskelet Surg 2024:10.1007/s12306-024-00857-7. [PMID: 39251541 DOI: 10.1007/s12306-024-00857-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 07/29/2024] [Indexed: 09/11/2024]
Abstract
PURPOSE Surgical treatment of chronic Achilles tendon rupture is a technically challenging procedure. We aimed to compare the clinical outcomes, range of motion, and strength of ankle plantar- and dorsiflexors between two techniques for fixation of flexor hallucis longus tendon to the calcaneus: interference screw and suture-external button. METHODS Twenty-five patients participated in this retrospective comparative study. All patients underwent short harvest FHL tendon transfer for chronic AT rupture were asked for a follow-up visit, at least one year following surgery. The outcomes were evaluated by visual analog scale (VAS), AOFAS ankle-hindfoot score, and VISA-A questionnaire. Ankle ROM with possible restriction in addition to isokinetic strength of ankle plantar- and dorsiflexors was assessed. RESULTS No statistically significant difference was observed between the groups for pain (P = 0.81), AOFAS ankle-hindfoot scale (P = 0.97), and VISA-A (P = 0.44). Notably, more decrease in ankle dorsiflexion was seen in interference screw group in comparison with suture-external button group (4.4 ± 6.6 vs. 9.5 ± 6.1 degrees, P = 0.06). The difference of active dorsiflexion between operated and non-operated side in interference screw group was statistically significant (P = 0.02). Biotenodesis screw imposed more limb asymmetry in comparison with suture-external button technique. CONCLUSIONS Fixation of transcalcaneal FHL tendon transfer for chronic AT either by interference screw or suture-external button has encouraging postoperative clinical results. Although ROM of the ankle joint reduced in both techniques, interference screw may result in more reduction in dorsiflexion of the ankle.
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Affiliation(s)
- A R Vosoughi
- Orthopedic & Rehabilitation Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Orthopedic Surgery, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Akbarzadeh
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S Brevis
- Orthopedic & Rehabilitation Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Kordi Yoosefinejad
- Orthopedic & Rehabilitation Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
- Physical Therapy Department, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
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Banadaki MD, Rummel NG, Backus S, Butterfield DA, St Clair DK, Campbell JM, Zhong W, Mayer K, Berry SM, Chaiswing L. Extraction of redox extracellular vesicles using exclusion-based sample preparation. Anal Bioanal Chem 2024:10.1007/s00216-024-05518-z. [PMID: 39243301 DOI: 10.1007/s00216-024-05518-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 08/18/2024] [Accepted: 08/21/2024] [Indexed: 09/09/2024]
Abstract
Studying specific subpopulations of cancer-derived extracellular vesicles (EVs) could help reveal their role in cancer progression. In cancer, an increase in reactive oxygen species (ROS) happens which results in lipid peroxidation with a major product of 4-hydroxynonenal (HNE). Adduction by HNE causes alteration to the structure of proteins, leading to loss of function. Blebbing of EVs carrying these HNE-adducted proteins as a cargo or carrying HNE-adducted on EV membrane are methods for clearing these molecules by the cells. We have referred to these EVs as Redox EVs. Here, we utilize a surface tension-mediated extraction process, termed exclusion-based sample preparation (ESP), for the rapid and efficient isolation of intact Redox EVs, from a mixed population of EVs derived from human glioblastoma cell line LN18. After optimizing different parameters, two populations of EVs were analyzed, those isolated from the sample (Redox EVs) and those remaining in the original sample (Remaining EVs). Electron microscopic imaging was used to confirm the presence of HNE adducts on the outer leaflet of Redox EVs. Moreover, the population of HNE-adducted Redox EVs shows significantly different characteristics to those of Remaining EVs including smaller size EVs and a more negative zeta potential EVs. We further treated glioblastoma cells (LN18), radiation-resistant glioblastoma cells (RR-LN18), and normal human astrocytes (NHA) with both Remaining and Redox EV populations. Our results indicate that Redox EVs promote the growth of glioblastoma cells, likely through the production of H2O2, and cause injury to normal astrocytes. In contrast, Remaining EVs have minimal impact on the viability of both glioblastoma cells and NHA cells. Thus, isolating a subpopulation of EVs employing ESP-based immunoaffinity could pave the way for a deeper mechanistic understanding of how subtypes of EVs, such as those containing HNE-adducted proteins, induce biological changes in the cells that take up these EVs.
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Affiliation(s)
| | - Nicole G Rummel
- Department of Chemistry, University of Kentucky, Lexington, KY, 40506, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
| | - Spencer Backus
- Department of Mechanical Engineering, University of Kentucky, Lexington, KY, 40506, USA
| | - David Allan Butterfield
- Department of Chemistry, University of Kentucky, Lexington, KY, 40506, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
| | - Daret K St Clair
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536, USA
| | - James M Campbell
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536, USA
| | - Weixiong Zhong
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Kristy Mayer
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Scott M Berry
- Department of Mechanical Engineering, University of Kentucky, Lexington, KY, 40506, USA.
| | - Luksana Chaiswing
- Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA.
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536, USA.
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Jha A, Parihar AKS, Sahu U, Kaushik Y, Inchulkar SR, Chauhan NS. Development of a simple and reproducible HPTLC method on protective effect induced by bark of Acacia nilotica on poisoning caused by use of nicotine containing tobacco products. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1247:124295. [PMID: 39270421 DOI: 10.1016/j.jchromb.2024.124295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 08/24/2024] [Accepted: 08/29/2024] [Indexed: 09/15/2024]
Abstract
Tobacco (Nicotiana tobacum) and tobacco products are the most critical public health challenges today across the globe. Nicotine is the main chemical composition of tobacco and is associated with withdrawal syndrome. A laboratory animal is commonly employed as a model to investigate nicotine toxicity, drug dependence, reinforcing effects, and the protective effects of samples against nicotine-induced toxicity. The first in-vitro model was developed to prove the protective effect of Babbul (Acacianilotica Linn.) against nicotine poisoning caused by consumption of tobacco products. The HPTLC method for estimating the protective effect against nicotine poisoning was performed by taking the solvent systems dichloromethane, methanol, and liquid ammonia (25 %)(9:1:0.04v/v/v). This in-vitro approach was done by treating the bark of the Acacia nilotica extract with a standard solution of nicotine, which reduced the concentration of nicotine by 39.12 %. The prescribed HPTLC method can be used successfully to assess Acacia nilotica's protective impact against nicotine toxicity caused by intake of nicotine containing tobacco products.
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Affiliation(s)
- Avijit Jha
- Shri N.P.A. Government Ayurvedic Collage, Raipur, Chhattisgarh 402010, India.
| | - Arun K S Parihar
- Drugs Testing Laboratory Avam Anusandhan Kendra, Raipur, Chhattisgarh 402010, India.
| | - Umakant Sahu
- Drugs Testing Laboratory Avam Anusandhan Kendra, Raipur, Chhattisgarh 402010, India; University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India.
| | - Yuvraj Kaushik
- Shri N.P.A. Government Ayurvedic Collage, Raipur, Chhattisgarh 402010, India.
| | - S R Inchulkar
- Shri N.P.A. Government Ayurvedic Collage, Raipur, Chhattisgarh 402010, India.
| | - N S Chauhan
- Drugs Testing Laboratory Avam Anusandhan Kendra, Raipur, Chhattisgarh 402010, India.
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Ratsch A, Burmeister EA, Bird AV, Bonner AJ, Miller UG, Speedy AM, Douglas G, Ober S, Woolcock Nee Geary-Laverty A, Blair Nee Murdoch S, Weng MT, Miles JA, Steadman KJ. Tobacco, nicotine, and cannabis use and exposure in an Australian Indigenous population during pregnancy: A protocol to measure parental and foetal exposure and outcomes. PLoS One 2024; 19:e0300406. [PMID: 39240849 PMCID: PMC11379133 DOI: 10.1371/journal.pone.0300406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 07/17/2024] [Indexed: 09/08/2024] Open
Abstract
BACKGROUND The Australian National Perinatal Data Collection collates all live and stillbirths from States and Territories in Australia. In that database, maternal cigarette smoking is noted twice (smoking <20 weeks gestation; smoking >20 weeks gestation). Cannabis use and other forms of nicotine use, for example vaping and nicotine replacement therapy, are nor reported. The 2021 report shows the rate of smoking for Australian Indigenous mothers was 42% compared with 11% for Australian non-Indigenous mothers. Evidence shows that Indigenous babies exposed to maternal smoking have a higher rate of adverse outcomes compared to non-Indigenous babies exposed to maternal smoking (S1 File). OBJECTIVES The reasons for the differences in health outcome between Indigenous and non-Indigenous pregnancies exposed to tobacco and nicotine is unknown but will be explored in this project through a number of activities. Firstly, the patterns of parental and household tobacco, nicotine and cannabis use and exposure will be mapped during pregnancy. Secondly, a range of biological samples will be collected to enable the first determination of Australian Indigenous people's nicotine and cannabis metabolism during pregnancy; this assessment will be informed by pharmacogenomic analysis. Thirdly, the pharmacokinetic and pharmacogenomic findings will be considered against maternal, placental, foetal and neonatal outcomes. Lastly, an assessment of population health literacy and risk perception related to tobacco, nicotine and cannabis products peri-pregnancy will be undertaken. METHODS This is a community-driven, co-designed, prospective, mixed-method observational study with regional Queensland parents expecting an Australian Indigenous baby and their close house-hold contacts during the peri-gestational period. The research utilises a multi-pronged and multi-disciplinary approach to explore interlinked objectives. RESULTS A sample of 80 mothers expecting an Australian Indigenous baby will be recruited. This sample size will allow estimation of at least 90% sensitivity and specificity for the screening tool which maps the patterns of tobacco and nicotine use and exposure versus urinary cotinine with 95% CI within ±7% of the point estimate. The sample size required for other aspects of the research is less (pharmacokinetic and genomic n = 50, and the placental aspects n = 40), however from all 80 mothers, all samples will be collected. CONCLUSIONS Results will be reported using the STROBE guidelines for observational studies. FORWARD We acknowledge the Traditional Custodians, the Butchulla people, of the lands and waters upon which this research is conducted. We acknowledge their continuing connections to country and pay our respects to Elders past, present and emerging. Notation: In this document, the terms Aboriginal and Torres Strait Islander and Indigenous are used interchangeably for Australia's First Nations People. No disrespect is intended, and we acknowledge the rich cultural diversity of the groups of peoples that are the Traditional Custodians of the land with which they identify and with whom they share a connection and ancestry.
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Affiliation(s)
- Angela Ratsch
- Wide Bay Hospital and Health Service, Hervey Bay, Australia
- Rural Clinical School, The University of Queensland, Brisbane, Australia
| | - Elizabeth A Burmeister
- Wide Bay Hospital and Health Service, Hervey Bay, Australia
- Rural Clinical School, The University of Queensland, Brisbane, Australia
| | | | | | - Uncle Glen Miller
- Butchulla Aboriginal Corporation, Fraser Coast, Australia
- Butchulla Mens Business Association, Fraser Coast, Australia
| | | | - Graham Douglas
- Galangoor Duwalami Primary Healthcare Service, Fraser Coast, Australia
| | - Stevan Ober
- Galangoor Duwalami Primary Healthcare Service, Fraser Coast, Australia
| | | | | | - Min-Tz Weng
- School of Pharmacy, The University of Queensland, Brisbane, Australia
| | - Jared A Miles
- School of Pharmacy, The University of Queensland, Brisbane, Australia
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106
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Shih CP, Tang WC, Chen P, Chen BC. Applications of Lightsheet Fluorescence Microscopy by High Numerical Aperture Detection Lens. J Phys Chem B 2024; 128:8273-8289. [PMID: 39177503 PMCID: PMC11382282 DOI: 10.1021/acs.jpcb.4c01721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
This Review explores the evolution, improvements, and recent applications of Light Sheet Fluorescence Microscopy (LSFM) in biological research using a high numerical aperture detection objective (lens) for imaging subcellular structures. The Review begins with an overview of the development of LSFM, tracing its evolution from its inception to its current state and emphasizing key milestones and technological advancements over the years. Subsequently, we will discuss various improvements of LSFM techniques, covering advancements in hardware such as illumination strategies, optical designs, and sample preparation methods that have enhanced imaging capabilities and resolution. The advancements in data acquisition and processing are also included, which provides a brief overview of the recent development of artificial intelligence. Fluorescence probes that were commonly used in LSFM will be highlighted, together with some insights regarding the selection of potential probe candidates for future LSFM development. Furthermore, we also discuss recent advances in the application of LSFM with a focus on high numerical aperture detection objectives for various biological studies. For sample preparation techniques, there are discussions regarding fluorescence probe selection, tissue clearing protocols, and some insights into expansion microscopy. Integrated setups such as adaptive optics, single objective modification, and microfluidics will also be some of the key discussion points in this Review. We hope that this comprehensive Review will provide a holistic perspective on the historical development, technical enhancements, and cutting-edge applications of LSFM, showcasing its pivotal role and future potential in advancing biological research.
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Affiliation(s)
- Chun-Pei Shih
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
- Department of Chemistry, National Taiwan University, Taipei 106319, Taiwan
- Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan University, Taipei 11529, Taiwan
| | - Wei-Chun Tang
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Peilin Chen
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Bi-Chang Chen
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
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Chow DJX, Schartner EP, Corsetti S, Upadhya A, Morizet J, Gunn-Moore FJ, Dunning KR, Dholakia K. Quantifying DNA damage following light sheet and confocal imaging of the mammalian embryo. Sci Rep 2024; 14:20760. [PMID: 39237572 PMCID: PMC11377761 DOI: 10.1038/s41598-024-71443-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 08/28/2024] [Indexed: 09/07/2024] Open
Abstract
Embryo quality assessment by optical imaging is increasing in popularity. Among available optical techniques, light sheet microscopy has emerged as a superior alternative to confocal microscopy due to its geometry, enabling faster image acquisition with reduced photodamage to the sample. However, previous assessments of photodamage induced by imaging may have failed to measure more subtle impacts. In this study, we employed DNA damage as a sensitive indicator of photodamage. We use light sheet microscopy with excitation at a wavelength of 405 nm for imaging embryo autofluorescence and compare its performance to laser scanning confocal microscopy. At an equivalent signal-to-noise ratio for images acquired with both modalities, light sheet microscopy reduced image acquisition time by ten-fold, and did not induce DNA damage when compared to non-imaged embryos. In contrast, imaging with confocal microscopy led to significantly higher levels of DNA damage within embryos and had a higher photobleaching rate. Light sheet imaging is also capable of inducing DNA damage within the embryo but requires multiple cycles of volumetric imaging. Collectively, this study confirms that light sheet microscopy is faster and safer than confocal microscopy for imaging live embryos, indicating its potential as a label-free diagnostic for embryo quality.
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Affiliation(s)
- Darren J X Chow
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, Australia
- Centre of Light for Life, The University of Adelaide, Adelaide, Australia
| | - Erik P Schartner
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, Australia
| | - Stella Corsetti
- SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, UK.
| | - Avinash Upadhya
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, Australia
- School of Biological Sciences, The University of Adelaide, Adelaide, Australia
- Centre of Light for Life, The University of Adelaide, Adelaide, Australia
| | - Josephine Morizet
- SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, UK
| | - Frank J Gunn-Moore
- School of Biology, University of St Andrews, North Haugh, St Andrews, Fife, UK
| | - Kylie R Dunning
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, Australia
- Centre of Light for Life, The University of Adelaide, Adelaide, Australia
| | - Kishan Dholakia
- School of Biological Sciences, The University of Adelaide, Adelaide, Australia.
- Centre of Light for Life, The University of Adelaide, Adelaide, Australia.
- SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, UK.
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Li J, Wu H, Zhou Y, Liu M, Zhou Y, Chu J, Kamili E, Wang W, Yang J, Lin L, Zhang Q, Yang S, Xu Y. Characterization and trans-generation dynamics of mitogene pool in the silver carp (Hypophthalmichthys molitrix). G3 (BETHESDA, MD.) 2024; 14:jkae101. [PMID: 38922124 DOI: 10.1093/g3journal/jkae101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 04/29/2024] [Accepted: 05/08/2024] [Indexed: 06/27/2024]
Abstract
Multicopied mitogenome are prone to mutation during replication often resulting in heteroplasmy. The derived variants in a cell, organ, or an individual animal constitute a mitogene pool. The individual mitogene pool is initiated by a small fraction of the egg mitogene pool. However, the characteristics and relationship between them has not yet been investigated. This study quantitatively analyzed the heteroplasmy landscape, genetic loads, and selection strength of the mitogene pool of egg and hatchling in the silver carp (Hypophthalmichthys molitrix) using high-throughput resequencing. The results showed heteroplasmic sites distribute across the whole mitogenome in both eggs and hatchlings. The dominant substitution was Transversion in eggs and Transition in hatching accounting for 95.23%±2.07% and 85.38%±6.94% of total HP sites, respectively. The total genetic loads were 0.293±0.044 in eggs and 0.228±0.022 in hatchlings (P=0.048). The dN/dS ratio was 58.03±38.98 for eggs and 9.44±3.93 for hatchlings (P=0.037). These results suggest that the mitogenomes were under strong positive selection in eggs with tolerance to variants with deleterious effects, while the selection was positive but much weaker in hatchlings showing marked quality control. Based on these findings, we proposed a trans-generation dynamics model to explain differential development mode of the two mitogene pool between oocyte maturation and ontogenesis of offspring. This study sheds light on significance of mitogene pool for persistence of populations and subsequent integration in ecological studies and conservation practices.
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Affiliation(s)
- Jinlin Li
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Hengshu Wu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Yingna Zhou
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Manhong Liu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Yongheng Zhou
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Jianing Chu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Elizabeth Kamili
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Wenhui Wang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Jincheng Yang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Lijun Lin
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Qi Zhang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
| | - Shuhui Yang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Yanchun Xu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
- National Forestry and Grassland Administration Research Center of Engineering Technology for Wildlife Conservation and Utilization, Harbin 150040, China
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Whitfield R, Tipton CD, Diaz N, Ancira J, Landry KS. Clinical Evaluation of Microbial Communities and Associated Biofilms with Breast Augmentation Failure. Microorganisms 2024; 12:1830. [PMID: 39338504 PMCID: PMC11434069 DOI: 10.3390/microorganisms12091830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 08/21/2024] [Accepted: 08/24/2024] [Indexed: 09/30/2024] Open
Abstract
The incidence of breast implant illness (BII) and BII-related explant procedures has not decreased with current surgical and treatment techniques. It is speculated the main underlying cause of BII complications is the result of chronic, sub-clinical infections residing on and around the implant. The infection, and subsequent biofilm, produce antagonistic compounds that drive chronic inflammation and immune responses. In this study, the microbial communities in over 600 consecutive samples of infected explant capsules and tissues were identified via next-generation sequencing to identify any commonality between samples. The majority of the bacteria identified were Gram-positive, with Cutibacterium acnes and Staphylococcus epidermidis being the dominant organisms. No correlation between sample richness and implant filling was found. However, there was a significant correlation between sample richness and patient age. Due to the complex nature, breast augmentation failures may be better addressed from a holistic approach than one of limited scope.
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Affiliation(s)
| | - Craig D. Tipton
- RTL Genomics, MicroGen DX, Lubbock, TX 79424, USA (N.D.); (J.A.)
| | - Niccole Diaz
- RTL Genomics, MicroGen DX, Lubbock, TX 79424, USA (N.D.); (J.A.)
| | - Jacob Ancira
- RTL Genomics, MicroGen DX, Lubbock, TX 79424, USA (N.D.); (J.A.)
| | - Kyle S. Landry
- Department of Health and Rehabilitation Sciences, Boston University, Boston, MA 02215, USA
- Delavie Sciences LLC, Worcester, MA 01606, USA
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Aikelamu K, Bai J, Zhang Q, Huang J, Wang M, Zhong C. Self-Assembled Nanoparticles of Silicon (IV)-NO Donor Phthalocyanine Conjugate for Tumor Photodynamic Therapy in Red Light. Pharmaceutics 2024; 16:1166. [PMID: 39339203 PMCID: PMC11435187 DOI: 10.3390/pharmaceutics16091166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 08/17/2024] [Accepted: 08/23/2024] [Indexed: 09/30/2024] Open
Abstract
The combination of photodynamic therapy (PDT) and pneumatotherapy is emerging as one of the most effective strategies for increasing cancer treatment efficacy while minimizing side effects. Photodynamic forces affect nitric oxide (NO) levels as activated photosensitizers produce NO, and NO levels in the tumor and microenvironment directly impact tumor cell responsiveness to PDT. In this paper, 3-benzenesulfonyl-4-(1-hydroxy ether)-1,2,5-oxadiazole-2-oxide NO donor-silicon phthalocyanine coupling (SiPc-NO) was designed and prepared into self-assembled nanoparticles (SiPc-NO@NPs) by precipitation method. By further introducing arginyl-glycyl-aspartic acid (RGD) on the surface of nanoparticles, NO-photosensitizer delivery systems (SiPc-NO@RGD NPs) with photo-responsive and tumor-targeting properties were finally prepared and preliminarily evaluated in terms of their formulation properties, NO release, and photosensitizing effects. Furthermore, high reactive oxygen species (ROS) generation efficiency and high PDT efficiency in two breast cancer cell lines (human MCF-7 and mouse 4T1) under irradiation were also demonstrated. The novel SiPc-NO@RGD NPs show great potential for application in NO delivery and two-photon bioimaging-guided photodynamic tumor therapy.
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Affiliation(s)
- Kadireya Aikelamu
- Xinjiang Key Laboratory of Natural Medicines Active Components and Drug Release Technology, Ministry of Education, Engineering Research Center of Xinjiang and Central Asian Medicine Resources, College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China
| | - Jingya Bai
- Xinjiang Key Laboratory of Natural Medicines Active Components and Drug Release Technology, Ministry of Education, Engineering Research Center of Xinjiang and Central Asian Medicine Resources, College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China
| | - Qian Zhang
- Xinjiang Key Laboratory of Natural Medicines Active Components and Drug Release Technology, Ministry of Education, Engineering Research Center of Xinjiang and Central Asian Medicine Resources, College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China
| | - Jiamin Huang
- Xinjiang Key Laboratory of Natural Medicines Active Components and Drug Release Technology, Ministry of Education, Engineering Research Center of Xinjiang and Central Asian Medicine Resources, College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China
| | - Mei Wang
- Xinjiang Key Laboratory of Natural Medicines Active Components and Drug Release Technology, Ministry of Education, Engineering Research Center of Xinjiang and Central Asian Medicine Resources, College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China
| | - Chunhong Zhong
- Xinjiang Key Laboratory of Natural Medicines Active Components and Drug Release Technology, Ministry of Education, Engineering Research Center of Xinjiang and Central Asian Medicine Resources, College of Pharmacy, Xinjiang Medical University, Urumqi 830017, China
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111
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Bartsch T, Lütz S, Rosenthal K. Cell-free protein synthesis with technical additives - expanding the parameter space of in vitro gene expression. Beilstein J Org Chem 2024; 20:2242-2253. [PMID: 39286794 PMCID: PMC11403795 DOI: 10.3762/bjoc.20.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 08/22/2024] [Indexed: 09/19/2024] Open
Abstract
Biocatalysis has established itself as a successful tool in organic synthesis. A particularly fast technique for screening enzymes is the in vitro expression or cell-free protein synthesis (CFPS). The system is based on the transcription and translation machinery of an extract-donating organism to which substrates such as nucleotides and amino acids, as well as energy molecules, salts, buffer, etc., are added. After successful protein synthesis, further substrates can be added for an enzyme activity assay. Although mimicking of cell-like conditions is an approach for optimization, the physical and chemical properties of CFPS are not well described yet. To date, standard conditions have mainly been used for CFPS, with little systematic testing of whether conditions closer to intracellular conditions in terms of viscosity, macromolecules, inorganic ions, osmolarity, or water content are advantageous. Also, very few non-physiological conditions have been tested to date that would expand the parameter space in which CFPS can be performed. In this study, the properties of an Escherichia coli extract-based CFPS system are evaluated, and the parameter space is extended to high viscosities, concentrations of inorganic ion and osmolarity using ten different technical additives including organic solvents, polymers, and salts. It is shown that the synthesis of two model proteins, namely superfolder GFP (sfGFP) and the enzyme truncated human cyclic GMP-AMP synthase fused to sfGFP (thscGAS-sfGFP), is very robust against most of the tested additives.
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Affiliation(s)
- Tabea Bartsch
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Stephan Lütz
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Katrin Rosenthal
- School of Science, Constructor University, Campus Ring 6, 28759 Bremen, Germany
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Sharma M, Pal P, Gupta SK. Deciphering the role of miRNAs in Alzheimer's disease: Predictive targeting and pathway modulation - A systematic review. Ageing Res Rev 2024; 101:102483. [PMID: 39236856 DOI: 10.1016/j.arr.2024.102483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 08/12/2024] [Accepted: 08/29/2024] [Indexed: 09/07/2024]
Abstract
Alzheimer's Disease (AD), a multifaceted neurodegenerative disorder, is increasingly understood through the regulatory lens of microRNAs (miRNAs). This review comprehensively examines the pivotal roles of miRNAs in AD pathogenesis, shedding light on their influence across various pathways. We delve into the biogenesis and mechanisms of miRNAs, emphasizing their significant roles in brain function and regulation. The review then navigates the complex landscape of AD pathogenesis, identifying key genetic, environmental, and molecular factors, with a focus on hallmark pathological features like amyloid-beta accumulation and tau protein hyperphosphorylation. Central to our discussion is the intricate involvement of miRNAs in these processes, highlighting their altered expression patterns in AD and subsequent functional implications, from amyloid-beta metabolism to tau pathology, neuroinflammation, oxidative stress, and synaptic dysfunction. The predictive analysis of miRNA targets using computational methods, complemented by experimental validations, forms a crucial part of our discourse, unraveling the contributions of specific miRNAs to AD. Moreover, we explore the therapeutic potential of miRNAs as biomarkers and in miRNA-based interventions, while addressing the challenges in translating these findings into clinical practice. This review aims to enhance understanding of miRNAs in AD, offering a foundation for future research directions and novel therapeutic strategies.
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Affiliation(s)
- Monika Sharma
- Department of Pharmacy, Banasthali Vidyapith, Rajasthan, India
| | - Pankaj Pal
- IIMT College of Pharmacy, IIMT Group of Colleges, Greater Noida, Uttar Pradesh, India.
| | - Sukesh Kumar Gupta
- KIET School of Pharmacy, KIET Group of Institutions, Ghaziabad, Uttar Pradesh, India; Department of Ophthalmology, Visual and Anatomical Sciences (OVAS), School of Medicine, Wayne State University, USA.
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Lai G, Malavolta M, Marcozzi S, Bigossi G, Giuliani ME, Casoli T, Balietti M. Late-onset major depressive disorder: exploring the therapeutic potential of enhancing cerebral brain-derived neurotrophic factor expression through targeted microRNA delivery. Transl Psychiatry 2024; 14:352. [PMID: 39227372 PMCID: PMC11371930 DOI: 10.1038/s41398-024-02935-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 09/05/2024] Open
Abstract
Major depressive disorder (MDD) is a severe psychiatric condition that significantly impacts the overall quality of life. Although MDD can occur across all age groups, it is notably prevalent among older individuals, with the aggravating circumstance that the clinical condition is frequently overlooked and undertreated. Furthermore, older adults often encounter resistance to standard treatments, experience adverse events, and face challenges associated with polypharmacy. Given that late-life MDD is associated with heightened rates of disability and mortality, as well as imposing a significant economic and logistical burden on healthcare systems, it becomes imperative to explore novel therapeutic approaches. These could serve as either supplements to standard guidelines or alternatives for non-responsive patients, potentially enhancing the management of geriatric MDD patients. This review aims to delve into the potential of microRNAs targeting Brain-Derived Neurotrophic Factor (BDNF). In MDD, a significant decrease in both central and peripheral BDNF has been well-documented, raising implications for therapy response. Notably, BDNF appears to be a key player in the intricate interplay between microRNA-induced neuroplasticity deficits and neuroinflammation, both processes deeply implicated in the onset and progression of the disease. Special emphasis is placed on delivery methods, with a comprehensive comparison of the strengths and weaknesses of each proposed approach. Our hypothesis proposes that employing multiple microRNAs concurrently, with the ability to directly influence BDNF and activate closely associated pathways, may represent the most promising strategy. Regarding vehicles, although the perfect nanoparticle remains elusive, considering the trade-offs, liposomes emerge as the most suitable option.
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Affiliation(s)
- Giovanni Lai
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, Ancona, Italy
| | - Marco Malavolta
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, Ancona, Italy.
| | - Serena Marcozzi
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, Ancona, Italy
| | - Giorgia Bigossi
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, Ancona, Italy
| | - Maria Elisa Giuliani
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, Ancona, Italy
| | - Tiziana Casoli
- Center of Neurobiology of Aging, IRCCS INRCA, Ancona, Italy
| | - Marta Balietti
- Center of Neurobiology of Aging, IRCCS INRCA, Ancona, Italy
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Shih PC, Wang YH, Chen SY, Tseng M, Hsu CA, Yang MY, Wang HY, Lee JA. Delta Immature Platelet Fraction Is Associated With Mortality in Bacteremia Patients. Int J Lab Hematol 2024. [PMID: 39222719 DOI: 10.1111/ijlh.14365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 08/05/2024] [Accepted: 08/17/2024] [Indexed: 09/04/2024]
Abstract
OBJECTIVES Immature platelet fraction (IPF) for differentiating bacteremia has been explored, whereas its prognostic correlation remains uncertain. This study aims to confirm the predictive capability of IPF for bacteremia and investigate its association with prognosis. METHODS Patients with complete blood count (CBC) on the blood culture day (D1) and the preceding day (D0) were retrospectively recruited and categorized into bacteremia and nonbacteremia groups. Immature platelet (IP) analysis, alongside CBC, was conducted. Delta IPF, defined by the absolute values of D1 minus D0 results was calculated. The ability to distinguish bacteremia from nonbacteremia patients, and the correlation with mortality were analyzed. RESULTS From February to December 2020, a total of 150 patients were enrolled, with 75 having bacteremia. The specificity for delta IPF ≥3.4% to predict bacteremia was 97.3% (95% confidence interval [CI]: 90.7-99.7). When delta IPF ≥3.4% combined with procalcitonin ≥0.5 (ng/mL), the sensitivity was 90.5% (95% CI: 69.6%-98.8%). Within the bacteremia group, delta IPF and the proportion of patients with delta IPF ≥1.5% were significantly higher in nonsurvival, while delta platelet levels did not. Furthermore, delta IPF ≥1.5% was independently associated with 30-day mortality (adjusted odds ratio: 3.88, 95% CI: 1.2%-11.4%; p = 0.020). The 30-day survival curve demonstrated a significant difference between patients with delta IPF ≥1.5% and those without (p < 0.001). CONCLUSIONS Delta IPF correlates with mortality in bacteremia patients. Our findings suggest IPF not only helps detect bacteremia but also predicts prognosis in the early stage.
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Affiliation(s)
- Pei-Chun Shih
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Hua Wang
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shey-Ying Chen
- Center for Quality Management, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Min Tseng
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Cheng-An Hsu
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming-Yan Yang
- Department of Medical Education, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsin-Yao Wang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital at Linkou, Taoyuan City, Taiwan
- School of Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Jia-Arng Lee
- Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
- Graduate Institute of Clinical Laboratory Sciences and Medical Biotechnology, National Taiwan University, Taipei, Taiwan
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Hasanzadeh A, Ebadati A, Saeedi S, Kamali B, Noori H, Jamei B, Hamblin MR, Liu Y, Karimi M. Nucleic acid-responsive smart systems for controlled cargo delivery. Biotechnol Adv 2024; 74:108393. [PMID: 38825215 DOI: 10.1016/j.biotechadv.2024.108393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
Stimulus-responsive delivery systems allow controlled, highly regulated, and efficient delivery of various cargos while minimizing side effects. Owing to the unique properties of nucleic acids, including the ability to adopt complex structures by base pairing, their easy synthesis, high specificity, shape memory, and configurability, they have been employed in autonomous molecular motors, logic circuits, reconfigurable nanoplatforms, and catalytic amplifiers. Moreover, the development of nucleic acid (NA)-responsive intelligent delivery vehicles is a rapidly growing field. These vehicles have attracted much attention in recent years due to their programmable, controllable, and reversible properties. In this work, we review several types of NA-responsive controlled delivery vehicles based on locks and keys, including DNA/RNA-responsive, aptamer-responsive, and CRISPR-responsive, and summarize their advantages and limitations.
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Affiliation(s)
- Akbar Hasanzadeh
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Arefeh Ebadati
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Molecular and Cell Biology, University of California, Merced, Merced, USA
| | - Sara Saeedi
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Neuroscience Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Babak Kamali
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamid Noori
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Behnam Jamei
- Neuroscience Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa
| | - Yong Liu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China.
| | - Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Oncopathology Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran; Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Applied Biotechnology Research Centre, Tehran Medical Science, Islamic Azad University, Tehran, Iran.
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Ettenger RB, Seifert ME, Blydt-Hansen T, Briscoe DM, Holman J, Weng PL, Srivastava R, Fleming J, Malekzadeh M, Pearl M. Detection of Subclinical Rejection in Pediatric Kidney Transplantation: Current and Future Practices. Pediatr Transplant 2024; 28:e14836. [PMID: 39147695 DOI: 10.1111/petr.14836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 07/19/2024] [Accepted: 07/22/2024] [Indexed: 08/17/2024]
Abstract
INTRODUCTION The successes in the field of pediatric kidney transplantation over the past 60 years have been extraordinary. Year over year, there have been significant improvements in short-term graft survival. However, improvements in longer-term outcomes have been much less apparent. One important contributor has been the phenomenon of low-level rejection in the absence of clinical manifestations-so-called subclinical rejection (SCR). METHODS Traditionally, rejection has been diagnosed by changes in clinical parameters, including but not limited to serum creatinine and proteinuria. This review examines the shortcomings of this approach, the effects of SCR on kidney allograft outcome, the benefits and drawbacks of surveillance biopsies to identify SCR, and new urine and blood biomarkers that define the presence or absence of SCR. RESULTS Serum creatinine is an unreliable index of SCR. Surveillance biopsies are the method most utilized to detect SCR. However, these have significant drawbacks. New biomarkers show promise. These biomarkers include blood gene expression profiles and donor derived-cell free DNA; urine gene expression profiles; urinary cytokines, chemokines, and metabolomics; and other promising blood and urine tests. CONCLUSION Specific emphasis is placed on studies carried out in pediatric kidney transplant recipients. TRIAL REGISTRATION ClinicalTrials.gov: NCT03719339.
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Affiliation(s)
- Robert B Ettenger
- Division of Nephrology, Department of Pediatrics, UCLA Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Michael E Seifert
- Division of Pediatric Nephrology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Tom Blydt-Hansen
- Multi-Organ Transplant Program, British Columbia Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - David M Briscoe
- Division of Nephrology, Department of Pediatrics Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - John Holman
- Transplant Genomics Inc., Framingham, Massachusetts, USA
| | - Patricia L Weng
- Division of Nephrology, Department of Pediatrics, UCLA Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Rachana Srivastava
- Division of Nephrology, Department of Pediatrics, UCLA Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - James Fleming
- Transplant Genomics Inc., Framingham, Massachusetts, USA
| | - Mohammed Malekzadeh
- Division of Nephrology, Department of Pediatrics, UCLA Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Meghan Pearl
- Division of Nephrology, Department of Pediatrics, UCLA Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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Ng BW, Kaukonen MK, McClements ME, Shamsnajafabadi H, MacLaren RE, Cehajic-Kapetanovic J. Genetic therapies and potential therapeutic applications of CRISPR activators in the eye. Prog Retin Eye Res 2024; 102:101289. [PMID: 39127142 DOI: 10.1016/j.preteyeres.2024.101289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 08/05/2024] [Accepted: 08/06/2024] [Indexed: 08/12/2024]
Abstract
Conventional gene therapy involving supplementation only treats loss-of-function diseases and is limited by viral packaging sizes, precluding therapy of large genes. The discovery of CRISPR/Cas has led to a paradigm shift in the field of genetic therapy, with the promise of precise gene editing, thus broadening the range of diseases that can be treated. The initial uses of CRISPR/Cas have focused mainly on gene editing or silencing of abnormal variants via utilising Cas endonuclease to trigger the target cell endogenous non-homologous end joining. Subsequently, the technology has evolved to modify the Cas enzyme and even its guide RNA, leading to more efficient editing tools in the form of base and prime editing. Further advancements of this CRISPR/Cas technology itself have expanded its functional repertoire from targeted editing to programmable transactivation, shifting the therapeutic focus to precise endogenous gene activation or upregulation with the potential for epigenetic modifications. In vivo experiments using this platform have demonstrated the potential of CRISPR-activators (CRISPRa) to treat various loss-of-function diseases, as well as in regenerative medicine, highlighting their versatility to overcome limitations associated with conventional strategies. This review summarises the molecular mechanisms of CRISPRa platforms, the current applications of this technology in vivo, and discusses potential solutions to translational hurdles for this therapy, with a focus on ophthalmic diseases.
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Affiliation(s)
- Benjamin Wj Ng
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK; Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK
| | - Maria K Kaukonen
- Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK; Department of Medical and Clinical Genetics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Michelle E McClements
- Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK
| | - Hoda Shamsnajafabadi
- Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK
| | - Robert E MacLaren
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK; Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK
| | - Jasmina Cehajic-Kapetanovic
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK; Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK.
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Schloßhauer JL, Tholen L, Körner A, Kubick S, Chatzopoulou S, Hönow A, Zemella A. Promoting the production of challenging proteins via induced expression in CHO cells and modified cell-free lysates harboring T7 RNA polymerase and mutant eIF2α. Synth Syst Biotechnol 2024; 9:416-424. [PMID: 38601208 PMCID: PMC11004649 DOI: 10.1016/j.synbio.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/12/2024] [Accepted: 03/16/2024] [Indexed: 04/12/2024] Open
Abstract
Chinese hamster ovary (CHO) cells are crucial in biopharmaceutical production due to their scalability and capacity for human-like post-translational modifications. However, toxic proteins and membrane proteins are often difficult-to-express in living cells. Alternatively, cell-free protein synthesis can be employed. This study explores innovative strategies for enhancing the production of challenging proteins through the modification of CHO cells by investigating both, cell-based and cell-free approaches. A major result in our study involves the integration of a mutant eIF2 translation initiation factor and T7 RNA polymerase into CHO cell lysates for cell-free protein synthesis. This resulted in elevated yields, while eliminating the necessity for exogenous additions during cell-free production, thereby substantially enhancing efficiency. Additionally, we explore the potential of the Rosa26 genomic site for the integration of T7 RNA polymerase and cell-based tetracycline-controlled protein expression. These findings provide promising advancements in bioproduction technologies, offering flexibility to switch between cell-free and cell-based protein production as needed.
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Affiliation(s)
- Jeffrey L. Schloßhauer
- Fraunhofer Project Group PZ-Syn of the Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Institute for Chemistry and Biochemistry, Laboratory of Protein Biochemistry, Freie Universität Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Lena Tholen
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
| | - Alexander Körner
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Institute of Biotechnology, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Stefan Kubick
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
- Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus –Senftenberg, The Brandenburg Medical School Theodor Fontane, University of Potsdam, Potsdam, Germany
- Institute for Chemistry and Biochemistry, Laboratory of Protein Biochemistry, Freie Universität Berlin, Thielallee 63, 14195, Berlin, Germany
| | - Sofia Chatzopoulou
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
| | - Anja Hönow
- New/era/mabs GmbH, August-Bebel-Str. 89, 14482, Potsdam, Germany
| | - Anne Zemella
- Fraunhofer Institute for Cell Therapy and Immunology-IZI, Branch Bioanalytics and Bioprocesses-IZI-BB, Am Mühlenberg, Potsdam, Germany
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Dias MKHM, Jayathilaka EHTT, De Zoysa M. Isolation, characterization, and immunomodulatory effects of extracellular vesicles isolated from fish pathogenic Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2024; 152:109787. [PMID: 39047924 DOI: 10.1016/j.fsi.2024.109787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 07/09/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
Bacterial extracellular vesicles (BEVs) are natural nanocarriers that have shown great potential for biomedical applications such as biomarkers, cancer therapy, immunomodulators, vaccines, wound healing, tissue engineering, and drug carriers. In the present study, BEVs were isolated from the gram-negative bacterium, Aeromonas hydrophila using the ultracentrifugation method and denoted as AhEVs. Using transmission electron microscopy imaging, we confirmed the ultrastructure and spherical shape morphology of AhEVs. Nanoparticle-tracking analysis results showed a mean particle size of 105.5 ± 2.0 nm for AhEVs. Moreover, the particle concentration of AhEVs was 2.34 ± 0.12 × 1011 particles/mL of bacterial supernatant. AhEV-treated fathead minnow (FHM) cells did not show cytotoxicity effects up to 50 μg/mL with no significant decrease in cells. Moreover, no mortality was observed in larval zebrafish up to 50 μg/mL which indicates that the AhEVs are biocompatible at this concentration. Furthermore, fluorescent-labeled AhEVs were internalized into FHM cells. Results of qRT-PCR analysis in FHM cells revealed that cellular pro-inflammatory cytokines such as nuclear factor (NF)-κB, interferon (Ifn), Irf7, interleukin (Il) 8, and Il11 were upregulated while downregulating the expression of anti-inflammatory Il10 in a concentration-dependent manner. AhEV-treated adult zebrafish (5 μg/fish) induced toll-like receptor (tlr) 2 and tlr4; tumor necrosis factor-alpha (tnfα); heat shock protein (hsp) 70; and il10, il6, and il1β in kidney. Protein expression of NF-κB p65 and Tnfα presented amplified levels in the spleen of AhEVs-treated zebrafish. Based on the collective findings, we conclude that AhEVs exhibited morphological and physicochemical characteristics to known EVs of gram (-)ve bacteria. At biocompatible concentrations, the immunomodulatory activity of AhEVs was demonstrated by inducing different immune response genes in FHM cells and zebrafish. Hence, we suggest that AhEVs could be a novel vaccine candidate in fish medicine due to their ability to elicit strong immune responses.
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Affiliation(s)
| | - E H T Thulshan Jayathilaka
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon, 34134, Republic of Korea.
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Sharma K, Puri NK, Singh B. Fabrication of rGO-decorated hBNNS hybrid nanocomposite via organic-inorganic interfacial chemistry for enhanced electrocatalytic detection of carcinoembryonic antigen. Anal Bioanal Chem 2024; 416:4789-4805. [PMID: 38878180 DOI: 10.1007/s00216-024-05379-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/12/2024] [Accepted: 05/15/2024] [Indexed: 08/10/2024]
Abstract
Organic-inorganic hybrid nanocomposites (OIHN), with tailored surface chemistry, offer ultra-sensitive architecture capable of detecting ultra-low concentrations of target analytes with precision. In the present work, a novel nano-biosensor was fabricated, acquainting dynamic synergy of reduced graphene oxide (rGO) decorated hexagonal boron nitride nanosheets (hBNNS) for detection of carcinoembryonic antigen (CEA). Extensive spectroscopic and microscopic analyses confirmed the successful hydrothermal synthesis of cross-linked rGO-hBNNS nanocomposite. Uniform micro-electrodes of rGO-hBNNS onto pre-hydrolyzed ITO were obtained via electrophoretic deposition (EPD) technique at low DC potential (15 V). Optimization of antibody incubation time, pH of supporting electrolyte, and immunoelectrode preparation was thoroughly investigated to enhance nano-biosensing efficacy. rGO-modified hBNNS demonstrated 29% boost in electrochemical performance over bare hBNNS, signifying remarkable electro-catalytic activity of nano-biosensor. The presence of multifunctional groups on the interface facilitated stable crosslinking chemistry, increased immobilization density, and enabled site-specific anchoring of Anti-CEA, resulting in improved binding affinity. The nano-biosensor demonstrated a remarkably low limit of detection of 5.47 pg/mL (R2 = 0.99963), indicating exceptional sensitivity and accuracy in detecting CEA concentrations from 0 to 50 ng/mL. The clinical evaluation confirmed its exceptional shelf life, minimal cross-reactivity, and robust recovery rates in human serum samples, thereby unraveling the potential for early, highly sensitive, and reliable CEA detection.
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Affiliation(s)
- Kanika Sharma
- Nanomaterials Research Laboratory (NRL), Department of Applied Physics, Delhi Technological University (DTU), Shahbad Daulatpur, Bawana Road, Delhi, 110042, India
| | - Nitin K Puri
- Nanomaterials Research Laboratory (NRL), Department of Applied Physics, Delhi Technological University (DTU), Shahbad Daulatpur, Bawana Road, Delhi, 110042, India.
| | - Bharti Singh
- Nanomaterials Research Laboratory (NRL), Department of Applied Physics, Delhi Technological University (DTU), Shahbad Daulatpur, Bawana Road, Delhi, 110042, India
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Huang Y, Chen G, Fu B, Si Y, Li P, Cao Y, Rong L, Zhao C. Rapid determination of germanium in lignite coal and coal-related solid byproducts by graphite furnace digestion inductively coupled plasma emission spectroscopy. Talanta 2024; 277:126429. [PMID: 38879947 DOI: 10.1016/j.talanta.2024.126429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 06/10/2024] [Accepted: 06/13/2024] [Indexed: 06/18/2024]
Abstract
This study developed a rapid and efficient graphite furnace digestion combined with inductively coupled plasma emission spectrometry (ICP-OES) method, enabling precise quantification of germanium (Ge) in coal and various coal-derived metallurgical byproducts across a broad concentration level (∼ppm-n%). The graphite furnace digestion conditions were examined intensively as a function of the acid amounts of HNO3 and HF (5-10 mL), temperature (80-180 °C), time (1-5 h), and acid drive methods (H3BO3 neutralization versus heating). Coal references including SARM 19, SARM 20, NIST SRM 1632e, and fly ash standard NIST SRM 2689 were tested. The optimum recovery of germanium was obtained when the HNO3 dosage, HF dosage, solid sample mass, temperature, and duration time were 10 mL, 5 mL, 0.1 g, 80 °C and 1 h. Agreement of 95.15-96.54 % between the measured and certified value was obtained under the optimum conditions. The spiked recovery was 103.23-103.54 %, indicating the matrix-analytes interactions were negligible. Boric acid neutralization reduced the recovery rates to 47.2-49.3 % and was not be appropriate for driving HF. The optimal spectral line for determining Ge is at a wavelength of 265.117 nm, at which the limit of detect and the limit of quantification were 0.46 μg L-1 and 1.53 μg L-1, respectively. The applicability of the method was validated by quantifying Ge in Ge-rich lignite, fly ashes (FA), and chlorinated distillation residue (CR) samples. The concentration of Ge in coals was 44.75-225.41 μg g-1, the content in FA was 0.68%-2.3 %, and the content in CR was 0.18 %, with the uncertainty of the method obtained being less than 0.5 %. X-ray fluorescence spectrometer (XRF) was used to verify the results. The difference between XRF data and ICP-OES data was less than 5 %, confirming the accuracy and reproductivity of the analytical method.
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Affiliation(s)
- Yukun Huang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; ZhongYuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Critical Metals Minerals Supernormal Enrichment and Extraction of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Guangyu Chen
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; ZhongYuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Critical Metals Minerals Supernormal Enrichment and Extraction of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Biao Fu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; ZhongYuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Critical Metals Minerals Supernormal Enrichment and Extraction of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China.
| | - Yingfu Si
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; ZhongYuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Critical Metals Minerals Supernormal Enrichment and Extraction of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Peng Li
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; ZhongYuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Critical Metals Minerals Supernormal Enrichment and Extraction of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Yijun Cao
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; ZhongYuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou, 450001, China; Key Laboratory of Critical Metals Minerals Supernormal Enrichment and Extraction of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Lingkun Rong
- School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia, 014010, China
| | - Chunjie Zhao
- Department of Economics, Clark University, 950 Main Street, Worcester, MA, 01610, USA
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Thornton EL, Paterson SM, Stam MJ, Wood CW, Laohakunakorn N, Regan L. Applications of cell free protein synthesis in protein design. Protein Sci 2024; 33:e5148. [PMID: 39180484 PMCID: PMC11344276 DOI: 10.1002/pro.5148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/26/2024] [Accepted: 08/02/2024] [Indexed: 08/26/2024]
Abstract
In protein design, the ultimate test of success is that the designs function as desired. Here, we discuss the utility of cell free protein synthesis (CFPS) as a rapid, convenient and versatile method to screen for activity. We champion the use of CFPS in screening potential designs. Compared to in vivo protein screening, a wider range of different activities can be evaluated using CFPS, and the scale on which it can easily be used-screening tens to hundreds of designed proteins-is ideally suited to current needs. Protein design using physics-based strategies tended to have a relatively low success rate, compared with current machine-learning based methods. Screening steps (such as yeast display) were often used to identify proteins that displayed the desired activity from many designs that were highly ranked computationally. We also describe how CFPS is well-suited to identify the reasons designs fail, which may include problems with transcription, translation, and solubility, in addition to not achieving the desired structure and function.
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Affiliation(s)
- Ella Lucille Thornton
- Centre for Engineering Biology, Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Sarah Maria Paterson
- Centre for Engineering Biology, Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Michael J. Stam
- Centre for Engineering Biology, Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Christopher W. Wood
- Centre for Engineering Biology, Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Nadanai Laohakunakorn
- Centre for Engineering Biology, Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Lynne Regan
- Centre for Engineering Biology, Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological SciencesUniversity of EdinburghEdinburghUK
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Deng F, Morales-Sosa P, Bernal-Rivera A, Wang Y, Tsuchiya D, Javier JE, Rohner N, Zhao C, Camacho J. Establishing Primary and Stable Cell Lines from Frozen Wing Biopsies for Cellular, Physiological, and Genetic Studies in Bats. Curr Protoc 2024; 4:e1123. [PMID: 39228233 PMCID: PMC11378949 DOI: 10.1002/cpz1.1123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Bats stand out among mammalian species for their exceptional traits, including the capacity to navigate through flight and echolocation, conserve energy through torpor/hibernation, harbor a multitude of viruses, exhibit resistance to disease, survive harsh environmental conditions, and demonstrate exceptional longevity compared to other mammals of similar size. In vivo studies of bats are challenging for several reasons, such as difficulty in locating and capturing them in their natural environments, limited accessibility, low sample size, environmental variation, long lifespans, slow reproductive rates, zoonotic disease risks, species protection, and ethical concerns. Thus, establishing alternative laboratory models is crucial for investigating the diverse physiological adaptations observed in bats. Obtaining quality cells from tissues is a critical first step for successful primary cell derivation. However, it is often impractical to collect fresh tissue and process the samples immediately for cell culture due to the resources required for isolating and expanding cells. As a result, frozen tissue is typically the starting resource for bat primary cell derivation, but cells in frozen tissue are usually damaged and have low integrity and viability. Isolating primary cells from frozen tissues thus poses a significant challenge. Herein, we present a successfully developed protocol for isolating primary dermal fibroblasts from frozen bat wing biopsies. This protocol marks a significant milestone, as this is the first protocol specifically focused on fibroblast isolation from bat frozen tissue. We also describe methods for primary cell characterization, genetic manipulation of primary cells through lentivirus transduction, and the development of stable cell lines. © 2024 Wiley Periodicals LLC. Basic Protocol 1: Bat wing biopsy collection and preservation Support Protocol 1: Blood collection from bat venipuncture Basic Protocol 2: Isolation of primary fibroblasts from adult bat frozen wing biopsy Support Protocol 2: Primary fibroblast culture and subculture Support Protocol 3: Determination of growth curve and doubling time Support Protocol 4: Cell banking and thawing of primary fibroblasts Basic Protocol 3: Lentiviral transduction of bat primary fibroblasts Basic Protocol 4: Bat stable fibroblast cell line development Support Protocol 5: Bat fibroblast validation by immunofluorescence staining Basic Protocol 5: Chromosome counting.
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Affiliation(s)
- Fengyan Deng
- Stowers Institute for Medical Research, Kansas City, Missouri
| | | | | | - Yan Wang
- Stowers Institute for Medical Research, Kansas City, Missouri
| | - Dai Tsuchiya
- Stowers Institute for Medical Research, Kansas City, Missouri
| | | | - Nicolas Rohner
- Stowers Institute for Medical Research, Kansas City, Missouri
- Department of Cell Biology & Physiology, University of Kansas Medical Center, Kansas City, Missouri
| | - Chongbei Zhao
- Stowers Institute for Medical Research, Kansas City, Missouri
| | - Jasmin Camacho
- Stowers Institute for Medical Research, Kansas City, Missouri
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124
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He L, Wang X, Chen X. Unveiling the role of microRNAs in metabolic dysregulation of Gestational Diabetes Mellitus. Reprod Biol 2024; 24:100924. [PMID: 39013209 DOI: 10.1016/j.repbio.2024.100924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/26/2024] [Accepted: 06/05/2024] [Indexed: 07/18/2024]
Abstract
Gestational Diabetes Mellitus (GDM) presents a significant health concern globally, necessitating a comprehensive understanding of its metabolic intricacies for effective management. MicroRNAs (miRNAs) have emerged as pivotal regulators in GDM pathogenesis, influencing glucose metabolism, insulin signaling, and lipid homeostasis during pregnancy. Dysregulated miRNA expression, both upregulated and downregulated, contributes to GDM-associated metabolic abnormalities. Ethnic and temporal variations in miRNA expression underscore the multifaceted nature of GDM susceptibility. This review examines the dysregulation of miRNAs in GDM and their regulatory functions in metabolic disorders. We discuss the involvement of specific miRNAs in modulating key pathways implicated in GDM pathogenesis, such as glucose metabolism, insulin signaling, and lipid homeostasis. Furthermore, we explore the potential diagnostic and therapeutic implications of miRNAs in GDM management, highlighting the promise of miRNA-based interventions for mitigating the adverse consequences of GDM on maternal and offspring health.
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Affiliation(s)
- Ling He
- Department of Obstetrics, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoli Wang
- Department of Obstetrics, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangyi Chen
- Department of Obstetrics, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Raavi L, Isha S, Jonna S, Craver EC, Nataraja H, Jenkins A, Hanson AJ, Venkataraman AB, Balasubramanian P, Tekin A, Bansal V, Caples SM, Khan SA, Jain NK, LaNou AT, Kashyap R, Cartin-Ceba R, Patel BM, Milian RD, Venegas CP, Shapiro AB, Bhattacharyya A, Chaudhary S, Kiley SP, Erben YM, Quinones QJ, Patel NM, Guru PK, Franco PM, Roy A, Sanghavi DK. Association of antibiotics with the outcomes in COVID-19 pneumonia patients with elevated PCT levels. Respir Med 2024; 231:107697. [PMID: 38857810 DOI: 10.1016/j.rmed.2024.107697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/29/2024] [Accepted: 06/05/2024] [Indexed: 06/12/2024]
Abstract
OBJECTIVE To assess antibiotics impact on outcomes in COVID-19 pneumonia patients with varying procalcitonin (PCT) levels. METHODS This retrospective cohort study included 3665 COVID-19 pneumonia patients hospitalized at five Mayo Clinic sites (March 2020 to June 2022). PCT levels were measured at admission. Patients' antibiotics use and outcomes were collected via the Society of Critical Care Medicine (SCCM) Viral Infection and Respiratory Illness Universal Study (VIRUS) registry. Patients were stratified into high and low PCT groups based on the first available PCT result. The distinction between high and low PCT was demarcated at both 0.25 ng/ml and 0.50 ng/ml. RESULTS Our cohort consisted of 3665 patients admitted with COVID-19 pneumonia. The population was predominantly male, Caucasian and non-Hispanic. With the PCT cut-off of 0.25 ng/ml, 2375 (64.8 %) patients had a PCT level <0.25 ng/mL, and 1290 (35.2 %) had PCT ≥0.25 ng/ml. While when the PCT cut off of 0.50 ng/ml was used we observed 2934 (80.05 %) patients with a PCT <0.50 ng/ml while 731(19.94 %) patients had a PCT ≥0.50 ng/ml. Patients with higher PCT levels exhibited significantly higher rates of bacterial infections (0.25 ng/ml cut-off: 4.2 % vs 7.9 %; 0.50 ng/ml cut-off: 4.6 % vs 9.2 %). Antibiotics were used in 66.0 % of the cohort. Regardless of the PCT cutoffs, the antibiotics group showed increased hospital length of stay (LOS), intensive care unit (ICU) admission rate, and mortality. However, early de-escalation (<24 h) of antibiotics correlated with reduced hospital LOS, ICU LOS, and mortality. These results were consistent even after adjusting for confounders. CONCLUSION Our study shows a substantial number of COVID-19 pneumonia patients received antibiotics despite a low incidence of bacterial infections. Therefore, antibiotics use in COVID pneumonia patients with PCT <0.5 in the absence of clinical evidence of bacterial infection has no beneficial effect.
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Affiliation(s)
- Lekhya Raavi
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Shahin Isha
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Sadhana Jonna
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Emily C Craver
- Department of Quantitative Health Sciences, Mayo Clinic in Florida, USA
| | | | - Anna Jenkins
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Abby J Hanson
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | | | | | - Aysun Tekin
- Department of Critical Care Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Vikas Bansal
- Department of Critical Care Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Sean M Caples
- Division of Pulmonary and Critical Care, Mayo Clinic, Rochester, Minnesota, USA
| | - Syed Anjum Khan
- Department of Critical Care Medicine, Mayo Clinic Health System in Mankato, USA
| | - Nitesh K Jain
- Department of Critical Care Medicine, Mayo Clinic Health System in Mankato, USA
| | - Abigail T LaNou
- Emergency Medicine and Critical Care, Mayo Clinic Health System, Eau Claire, WI, USA
| | - Rahul Kashyap
- Department of Anesthesia and Critical Care Medicine, Mayo Clinic Rochester, Minnesota, USA
| | | | - Bhavesh M Patel
- Department of Critical Care Medicine, Mayo Clinic, Arizona, USA
| | | | - Carla P Venegas
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Anna B Shapiro
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | | | - Sanjay Chaudhary
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Sean P Kiley
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Young M Erben
- Division of Vascular and Endovascular Surgery, Mayo Clinic, Jacksonville, FL, USA
| | | | - Neal M Patel
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | - Pramod K Guru
- Department of Critical Care Medicine, Mayo Clinic in Florida, USA
| | | | - Archana Roy
- Division of Hospital Internal Medicine, Mayo Clinic, Jacksonville, FL, USA
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Tuominen RK, Renko JM. Biomarkers of Parkinson's disease in perspective of early diagnosis and translation of neurotrophic therapies. Basic Clin Pharmacol Toxicol 2024; 135:271-284. [PMID: 38973499 DOI: 10.1111/bcpt.14042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 04/15/2024] [Accepted: 05/28/2024] [Indexed: 07/09/2024]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disorder characterized by progressive loss of dopamine neurons and aberrant deposits of alpha-synuclein (α-syn) in the brain. The symptomatic treatment is started after the onset of motor manifestations in a late stage of the disease. Preclinical studies with neurotrophic factors (NTFs) show promising results of disease-modifying neuroprotective or even neurorestorative effects. Four NTFs have entered phase I-II clinical trials with inconclusive outcomes. This is not surprising because the preclinical evidence is from acute early-stage disease models, but the clinical trials included advanced PD patients. To conclude the value of NTF therapies, clinical studies should be performed in early-stage patients with prodromal symptoms, that is, before motor manifestations. In this review, we summarize currently available diagnostic and prognostic biomarkers that could help identify at-risk patients benefiting from NTF therapies. Focus is on biochemical and imaging biomarkers, but also other modalities are discussed. Neuroimaging is the most important diagnostic tool today, but α-syn imaging is not yet viable. Modern techniques allow measuring various forms of α-syn in cerebrospinal fluid, blood, saliva, and skin. Digital biomarkers and artificial intelligence offer new means for early diagnosis and longitudinal follow-up of degenerative brain diseases.
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Affiliation(s)
- Raimo K Tuominen
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Juho-Matti Renko
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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127
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Khera HK, Mishra R. Nucleic Acid Based Testing (NABing): A Game Changer Technology for Public Health. Mol Biotechnol 2024; 66:2168-2200. [PMID: 37695473 DOI: 10.1007/s12033-023-00870-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 08/21/2023] [Indexed: 09/12/2023]
Abstract
Timely and accurate detection of the causal agent of a disease is crucial to restrict suffering and save lives. Mere symptoms are often not enough to detect the root cause of the disease. Better diagnostics applied for screening at a population level and sensitive detection assays remain the crucial component of disease surveillance which may include clinical, plant, and environmental samples, including wastewater. The recent advances in genome sequencing, nucleic acid amplification, and detection methods have revolutionized nucleic acid-based testing (NABing) and screening assays. A typical NABing assay consists of three modules: isolation of the nucleic acid from the collected sample, identification of the target sequence, and final reading the target with the help of a signal, which may be in the form of color, fluorescence, etc. Here, we review current NABing assays covering the different aspects of all three modules. We also describe the frequently used target amplification or signal amplification procedures along with the variety of applications of this fast-evolving technology and challenges in implementation of NABing in the context of disease management especially in low-resource settings.
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Affiliation(s)
- Harvinder Kour Khera
- Tata Institute for Genetics and Society, New inStem Building NCBS Campus, GKVK Post, Bellary Road, Bengaluru, 560065, India.
| | - Rakesh Mishra
- Tata Institute for Genetics and Society, New inStem Building NCBS Campus, GKVK Post, Bellary Road, Bengaluru, 560065, India.
- CSIR-Centre for Cellular and Molecular Biology, Uppal Rd, IICT Colony, Habsiguda, Hyderabad, Telangana, 500007, India.
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Chauhan K, Yashavarddhan MH, Gogia A, Ranjan V, Parakh U, Makhija A, Nanavaty V, Ganguly NK, Rana R. Unraveling the genetic landscape of pulmonary arterial hypertension in Indian patients: A transcriptome study. Respir Med 2024; 231:107716. [PMID: 38914209 DOI: 10.1016/j.rmed.2024.107716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 05/13/2024] [Accepted: 06/13/2024] [Indexed: 06/26/2024]
Abstract
BACKGROUND Pulmonary hypertension (PH) is the abnormal elevation of pressure in the pulmonary vascular system, with various underlying causes. A specific type of PH is pulmonary arterial hypertension (PAH), a severe condition characterized by high pulmonary arterial pressure resulting from structural changes in distal pulmonary vessels, altered arterial tone, and inflammation. This leads to right ventricular hypertrophy and heart failure. The molecular mechanisms behind PAH are not well understood. This manuscript aims to elucidate these mechanisms using the genetic tool, aiding in diagnosis and treatment selection. METHOD In our present study, we have obtained blood samples from both patients with pulmonary arterial hypertension (PAH) and healthy individuals. We conducted a comparative transcriptome analysis to identify genes that are either upregulated or downregulated in PAH patients when compared to the control group. Subsequently, we carried out a validation study focusing on the log2-fold downregulated genes in PAH, employing Quantitative Real-Time PCR for confirmation. Additionally, we quantified the proteins encoded by the validated genes using the ELISA technique. RESULTS The results of the transcriptome analysis revealed that 97 genes were significantly upregulated, and 6 genes were significantly downregulated. Among these, we chose to focus on and validate only four of the downregulated genes, as they were directly or indirectly associated with the hypertension pathway. We also conducted validation studies for the proteins encoded by these genes, and the results were consistent with those obtained in the transcriptome analysis. CONCLUSION In conclusion, the findings of this study indicate that the four validated genes identified in the context of PAH can be further explored as potential targets for both diagnostic and therapeutic applications.
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Affiliation(s)
- Kirti Chauhan
- Department of Biotechnology and Research, Sir Ganga Ram Hospital, New Delhi, 110060, India
| | - M H Yashavarddhan
- Department of Biotechnology and Research, Sir Ganga Ram Hospital, New Delhi, 110060, India
| | - Atul Gogia
- Department of Internal Medicine, Sir Ganga Ram Hospital, New Delhi, 110060, India
| | - Vivek Ranjan
- Department of Blood Transfusion Medicine, Sir Ganga Ram Hospital, New Delhi, 110060, India
| | - Ujjawal Parakh
- Department of Chest Medicine, Sir Ganga Ram Hospital, New Delhi, India
| | - Aman Makhija
- Department of Cardiology, Sir Ganga Ram Hospital, New Delhi, India
| | - Vishal Nanavaty
- Neuberg Center for Genomic Medicine, Neuberg Diagnostic Pvt. Ltd. Ahmedabad, 380006, India
| | - Nirmal Kumar Ganguly
- Department of Biotechnology and Research, Sir Ganga Ram Hospital, New Delhi, 110060, India
| | - Rashmi Rana
- Department of Biotechnology and Research, Sir Ganga Ram Hospital, New Delhi, 110060, India.
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Štěpánková T, Quittková A, Čech Z, Machač S. Sonographic measurement of deep fascia parameters - Interrater reliability. Surg Radiol Anat 2024; 46:1481-1489. [PMID: 39014213 DOI: 10.1007/s00276-024-03423-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 06/17/2024] [Indexed: 07/18/2024]
Abstract
PURPOSE The deep fascia has recently been a current topic in many medical fields, including rehabilitation. Some research has already focused on assessing deep fascia, however results of individual authors differ in certain aspects. This study focuses on the inter-rater reliability of ultrasound (US) measurement of the thickness of deep fascia and loose connective tissue (LCT). The aim was to define the causes of any discrepancies in measurement that could contribute to the unification of management of evaluating fascia. METHODS An observational study was performed including 20 healthy individuals in whom fascia lata of the anterior thigh was examined by US imaging and then measured in Image J software. Three raters participated in this study: the first with 6 years of US imaging experience, other two were newly trained. The measurement of fascial parameters was conducted in two phases with special consultation between them resulting in an agreement of the research team on the more precise way of measurement. RESULTS Results revealed the value of inter-rater reliability ICC3,1 = 0.454 for deep fascia thickness and ICC3,1 = 0.265 for LCT thickness in the first phase and any significant difference in the second phase. This poor inter-rater reliability led to a search for possible causes of discrepancies, which authors subsequently highlighted. CONCLUSION The findings of the study show the main pitfalls of deep fascia measurement that should contribute to the unification of evaluation.
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Affiliation(s)
- Tereza Štěpánková
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic.
| | - Adéla Quittková
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Zdeněk Čech
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Stanislav Machač
- Department of Rehabilitation and Sports Medicine, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
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Gandy A, Maussion G, Al-Habyan S, Nicouleau M, You Z, Chen CXQ, Abdian N, Aprahamian N, Krahn AI, Larocque L, Durcan TM, Deneault E. An Inducible Luminescent System to Explore Parkinson's Disease-Associated Genes. Int J Mol Sci 2024; 25:9493. [PMID: 39273438 PMCID: PMC11395715 DOI: 10.3390/ijms25179493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 08/23/2024] [Accepted: 08/26/2024] [Indexed: 09/15/2024] Open
Abstract
With emerging genetic association studies, new genes and pathways are revealed as causative factors in the development of Parkinson's disease (PD). However, many of these PD genes are poorly characterized in terms of their function, subcellular localization, and interaction with other components in cellular pathways. This represents a major obstacle towards a better understanding of the molecular causes of PD, with deeper molecular studies often hindered by a lack of high-quality, validated antibodies for detecting the corresponding proteins of interest. In this study, we leveraged the nanoluciferase-derived LgBiT-HiBiT system by generating a cohort of tagged PD genes in both induced pluripotent stem cells (iPSCs) and iPSC-derived neuronal cells. To promote luminescence signals within cells, a master iPSC line was generated, in which LgBiT expression is under the control of a doxycycline-inducible promoter. LgBiT could bind to HiBiT when present either alone or when tagged onto different PD-associated proteins encoded by the genes GBA1, GPNMB, LRRK2, PINK1, PRKN, SNCA, VPS13C, and VPS35. Several HiBiT-tagged proteins could already generate luminescence in iPSCs in response to the doxycycline induction of LgBiT, with the enzyme glucosylceramidase beta 1 (GCase), encoded by GBA1, being one such example. Moreover, the GCase chaperone ambroxol elicited an increase in the luminescence signal in HiBiT-tagged GBA1 cells, correlating with an increase in the levels of GCase in dopaminergic cells. Taken together, we have developed and validated a Doxycycline-inducible luminescence system to serve as a sensitive assay for the quantification, localization, and activity of HiBiT-tagged PD-associated proteins with reliable sensitivity and efficiency.
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Affiliation(s)
- Anelya Gandy
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Gilles Maussion
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Sara Al-Habyan
- Centre for Oncology, Radiopharmaceuticals and Research (CORR), Biologic and Radiopharmaceutical Drugs Directorate (BRDD), Health Products and Food Branch (HPFB), Health Canada, Ottawa, ON K1A 0K9, Canada
| | - Michael Nicouleau
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Zhipeng You
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Carol X-Q Chen
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Narges Abdian
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Nathalia Aprahamian
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Andrea I Krahn
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Louise Larocque
- Centre for Oncology, Radiopharmaceuticals and Research (CORR), Biologic and Radiopharmaceutical Drugs Directorate (BRDD), Health Products and Food Branch (HPFB), Health Canada, Ottawa, ON K1A 0K9, Canada
| | - Thomas M Durcan
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Eric Deneault
- Centre for Oncology, Radiopharmaceuticals and Research (CORR), Biologic and Radiopharmaceutical Drugs Directorate (BRDD), Health Products and Food Branch (HPFB), Health Canada, Ottawa, ON K1A 0K9, Canada
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131
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Sinetova MA, Kupriyanova EV, Los DA. Spirulina/Arthrospira/Limnospira-Three Names of the Single Organism. Foods 2024; 13:2762. [PMID: 39272527 PMCID: PMC11395459 DOI: 10.3390/foods13172762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/20/2024] [Accepted: 08/21/2024] [Indexed: 09/15/2024] Open
Abstract
Recent advances in research techniques have enabled rapid progress in the study of spirulina, an ancient edible cyanobacteria. Nowadays, spirulina species are classified into three genera: Spirulina, Arthrospira, and Limnospira. The latter now refers to industrially manufactured spirulina strains. Whole-genome sequencing revealed gene clusters involved in metabolite production, and the physiology of spirulina. Omics technologies demonstrated the absence of hazardous compounds in spirulina cells, confirming the safety of this biomass as a food product. Spirulina is a good source of different chemicals used in food manufacturing, food supplements, and pharmaceuticals. Spirulina's enrichment with inherent biologically active substances makes it a potential supplier of natural products for dietary and pharmaceutical applications. Spirulina is also a prospective component of both terrestrial and space-based life support systems. Here, we review current breakthroughs in spirulina research and clarify fallacies that can be found in both professional literature and public media.
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Affiliation(s)
- Maria A Sinetova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Elena V Kupriyanova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
| | - Dmitry A Los
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, 127276 Moscow, Russia
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132
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Martín-Gómez B, Valverde S, Bernal J, Ares AM. Development and validation of an analytical methodology based on solvent microextraction and UHPLC-MS/MS for determining bisphenols in honeys from different botanical origins. Food Chem 2024; 450:139358. [PMID: 38631201 DOI: 10.1016/j.foodchem.2024.139358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/03/2024] [Accepted: 04/11/2024] [Indexed: 04/19/2024]
Abstract
A new analytical methodology was proposed to determine fourteen bisphenols in honeys from different botanical origins using ultra-high performance liquid chromatography-tandem mass spectrometry. A fast, efficient, environmentally-friendly and simple sample treatment (recoveries between 81% and 116%; matrix effect <20% for all studied compounds except for bisphenol E, F and S) was proposed, which involved a solvent microextraction with acetone and a small volume/amount of 1-hexanol. Chromatographic analysis (< 15 min) was performed in a Kinetex EVO C18 column under gradient elution mode. The method was validated in terms of selectivity, limits of detection (0.2-1.5 μg/kg) and quantification (0.5-4.7 μg/kg), linearity, matrix effect, trueness, and precision (relative standard deviation <17%). Finally, thirty honey samples were analyzed, revealing the presence of residues of nine bisphenols in some of them. However, quantification was possible only in two cases for bisphenol A, with a concentration of approximately 13 μg/kg.
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Affiliation(s)
- Beatriz Martín-Gómez
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - Silvia Valverde
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - José Bernal
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain
| | - Ana María Ares
- Analytical Chemistry Group (TESEA), I. U. CINQUIMA, Faculty of Sciences, University of Valladolid, 47011 Valladolid, Spain.
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133
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Afzal S, Dürrast N, Hassan I, Soleimanpour E, Tsai PL, Dieterich DC, Fendt M. Probing cognitive flexibility in Shank2-deficient mice: Effects of D-cycloserine and NMDAR signaling hub dynamics. Prog Neuropsychopharmacol Biol Psychiatry 2024; 134:111051. [PMID: 38849086 DOI: 10.1016/j.pnpbp.2024.111051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/31/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Neurodevelopmental disorders such as autism spectrum disorder (ASD) have a heterogeneous etiology but are largely associated with genetic factors. Robust evidence from recent human genetic studies has linked mutations in the Shank2 gene to idiopathic ASD. Modeling these Shank2 mutations in animal models recapitulates behavioral changes, e.g. impaired social interaction and repetitive behavior of ASD patients. Shank2-deficient mice exhibit NMDA receptor (NMDAR) hypofunction and associated behavioral deficits. Of note, NMDARs are strongly implicated in cognitive flexibility. Their hypofunction, e.g. observed in schizophrenia, or their pharmacological inhibition leads to impaired cognitive flexibility. However, the association between Shank2 mutations and cognitive flexibility is poorly understood. Using Shank2-deficient mice, we explored the role of Shank2 in cognitive flexibility measured by the attentional set shifting task (ASST) and whether ASST performance in Shank2-deficient mice can be modulated by treatment with the partial NMDAR agonist D-cycloserine (DCS). Furthermore, we investigated the effects of Shank2 deficiency, ASST training, and DCS treatment on the expression level of NMDAR signaling hub components in the orbitofrontal cortex (OFC), including NMDAR subunits (GluN2A, GluN2B, GluN2C), phosphoglycerate dehydrogenase and serine racemase. Surprisingly, Shank2 deficiency did not affect ASST performance or alter the expression of the investigated NMDAR signaling hub components. Importantly, however, DCS significantly improved ASST performance, demonstrating that positive NMDAR modulation facilitates cognitive flexibility. Furthermore, DCS increased the expression of GluN2A in the OFC, but not that of other NMDAR signaling hub components. Our findings highlight the potential of DCS as a pharmacological intervention to improve cognitive flexibility impairments downstream of NMDAR modulation and substantiate the key role of NMDAR in cognitive flexibility.
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Affiliation(s)
- Samia Afzal
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany.
| | - Nora Dürrast
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany
| | - Iman Hassan
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany
| | - Elaheh Soleimanpour
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany
| | - Pei-Ling Tsai
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany
| | - Daniela C Dieterich
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany; Center of Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany
| | - Markus Fendt
- Institute for Pharmacology and Toxicology, Otto-von-Guericke University, Magdeburg, Germany; Center of Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, Germany
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134
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de Souza PA, dos Santos MCS, de Miranda RVDSL, da Costa LV, da Silva RPP, de Miranda CAC, da Silva APR, Forsythe SJ, Bôas MHSV, Brandão MLL. Evaluation of Antimicrobial Resistance Patterns of Pseudomonas aeruginosa Strains Isolated among COVID-19 Patients in Brazil Typed by Fourier-Transform Infrared Spectroscopy. Life (Basel) 2024; 14:1079. [PMID: 39337864 PMCID: PMC11433527 DOI: 10.3390/life14091079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 08/15/2024] [Accepted: 08/16/2024] [Indexed: 09/30/2024] Open
Abstract
This study aimed to characterize Pseudomonas aeruginosa strains isolated from hospitalized patients during the COVID-19 pandemic. This was achieved using phenotypic and molecular techniques, including their antimicrobial resistance profile and biofilm formation. Eighteen strains were isolated from a hospital in Rio de Janeiro, Brazil, and identified by VITEK®2, MALDI-TOF/MS (VITEK MS® and MALDI Biotyper®), and 16S rRNA sequencing. Fourier-transform infrared (FTIR) spectroscopy, antimicrobial susceptibility testing, and biofilm formation and disinfectant tolerance tests were applied to evaluate the virulence characteristics of the strains. VITEK®2 (≥99%), VITEK MS® (≥82.7%), and MALDI Biotyper® (score ≥ 2.01) accurately identified the P. aeruginosa strains, but 16S rRNA sequencing did not differentiate the species P. aeruginosa from P. paraeruginosa. FTIR typing identified three different clusters, but no correlation between the phenotypical or antimicrobial susceptibility testing patterns was found. Most strains exhibited resistance to various antimicrobials. The exceptions were sensitivity to amikacin and norfloxacin, and consequently, these could be considered potential treatment options. Most strains (n = 15, 83.3%) produced biofilms on polystyrene. Sodium hypochlorite treatment (0.5%/15 min) was shown to be the most effective disinfectant for biofilm elimination. P. aeruginosa biofilm formation and tolerance to disinfectants demonstrate the need for effective cleaning protocols to eliminate contamination by this organism in the hospital environment and medical equipment.
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Affiliation(s)
- Paula Araujo de Souza
- Laboratory of Microbiology of Food and Sanitizes, INCQS/Fiocruz, Rio de Janeiro 21040-900, Brazil;
- Laboratory of Microbiological Control, Bio-Manguinhos/Fiocruz, Rio de Janeiro 21040-900, Brazil; (M.C.S.d.S.); (R.V.d.S.L.d.M.); (L.V.d.C.); (M.L.L.B.)
| | - Milena Cristina Silva dos Santos
- Laboratory of Microbiological Control, Bio-Manguinhos/Fiocruz, Rio de Janeiro 21040-900, Brazil; (M.C.S.d.S.); (R.V.d.S.L.d.M.); (L.V.d.C.); (M.L.L.B.)
| | | | - Luciana Veloso da Costa
- Laboratory of Microbiological Control, Bio-Manguinhos/Fiocruz, Rio de Janeiro 21040-900, Brazil; (M.C.S.d.S.); (R.V.d.S.L.d.M.); (L.V.d.C.); (M.L.L.B.)
| | | | | | - Ana Paula Roque da Silva
- Analytical Indicators and Data Systems Section, Bio-Manguinhos/Fiocruz, Rio de Janeiro 21040-900, Brazil;
| | | | | | - Marcelo Luiz Lima Brandão
- Laboratory of Microbiological Control, Bio-Manguinhos/Fiocruz, Rio de Janeiro 21040-900, Brazil; (M.C.S.d.S.); (R.V.d.S.L.d.M.); (L.V.d.C.); (M.L.L.B.)
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135
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Vaxevanis C, Bachmann M, Seliger B. Immune modulatory microRNAs in tumors, their clinical relevance in diagnosis and therapy. J Immunother Cancer 2024; 12:e009774. [PMID: 39209767 PMCID: PMC11367391 DOI: 10.1136/jitc-2024-009774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2024] [Indexed: 09/04/2024] Open
Abstract
The importance of the immune system in regulating tumor growth by inducing immune cell-mediated cytotoxicity associated with patients' outcomes has been highlighted in the past years by an increasing life expectancy in patients with cancer on treatment with different immunotherapeutics. However, tumors often escape immune surveillance, which is accomplished by different mechanisms. Recent studies demonstrated an essential role of small non-coding RNAs, such as microRNAs (miRNAs), in the post-transcriptional control of immune modulatory molecules. Multiple methods have been used to identify miRNAs targeting genes involved in escaping immune recognition including miRNAs targeting CTLA-4, PD-L1, HLA-G, components of the major histocompatibility class I antigen processing machinery (APM) as well as other immune response-relevant genes in tumors. Due to their function, these immune modulatory miRNAs can be used as (1) diagnostic and prognostic biomarkers allowing to discriminate between tumor stages and to predict the patients' outcome as well as response and resistance to (immuno) therapies and as (2) therapeutic targets for the treatment of tumor patients. This review summarizes the role of miRNAs in tumor-mediated immune escape, discuss their potential as diagnostic, prognostic and predictive tools as well as their use as therapeutics including alternative application methods, such as chimeric antigen receptor T cells.
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Affiliation(s)
- Christoforos Vaxevanis
- Institute for Medical Immunology, Martin Luther University Halle Wittenberg, Halle, Germany
| | - Michael Bachmann
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Barbara Seliger
- Institute for Medical Immunology, Martin Luther University Halle Wittenberg, Halle, Germany
- Institute for Translational Immunology, Brandenburg Medical School Theodor Fontane, Brandenburg, Germany
- Fraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany
- Institute of Translational Immunology, Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, Brandenburg, Germany
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136
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Chen B, Zhu Q, Xie D, Lao Y, Li H. Policy design and implementation: a quantitative evaluation and empirical study of China's rural sports policy based on the PMC index model. Front Public Health 2024; 12:1430173. [PMID: 39290413 PMCID: PMC11406341 DOI: 10.3389/fpubh.2024.1430173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 08/09/2024] [Indexed: 09/19/2024] Open
Abstract
The formulation and implementation of a rural sports policy is an important means of promoting rural sports, improving the physical wellbeing of farmers, and enhancing the cohesion of rural communities. However, introducing such a policy faces problems in the process of specific policy practices, such as poor effective implementation, a lagging implementation effect, and goal cognitive bias. How to look at the current rural sports policy implementation blockage problem and the governance of the blockage, in order to improve the level of rural sports public service, is the focus of this paper's research. On this basis, this paper selects 56 policy texts, issued from 2002 to 2023, that are highly relevant to rural sports and have high timeliness and authority from the sports policies issued in China. Also, ROST CM6 software is used to count high-frequency words; this study then draws keyword social network mapping for the visual analysis of policy preferences and selects 20 rural sports policy texts as typical samples. Finally, a policy modeling research consistency (PMC) index model is used to evaluate the texts comprehensively and quantitatively. The results show that the overall design of China's rural sports policies is relatively reasonable. However, the consistency and effectiveness of their implementation need to be improved. Twenty representative policy texts have an average PMC index score of 5.96, with a concave index of 3.04 (which is good overall), with the highest mean value for rural sports policies at the national level. This is followed by the second highest value at the municipal and county levels, and the smallest at the provincial level. Therefore, in the future formulation and implementation of rural sports policies, a multi-dimensional rural sports policy system should be constructed. This would help to strengthen the consistency and effectiveness of the implementation of the policy system and promote the high-quality development of rural sports.
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Affiliation(s)
- Baibing Chen
- School of Public Policy And Management, Guangxi University, Nanning, China
- School of Physical Education, Guangxi University, Nanning, China
| | - Qizhi Zhu
- School of Physical Education, Guangxi University, Nanning, China
| | - Dongfang Xie
- School of Physical Education, Guangxi University, Nanning, China
| | - Yaoxian Lao
- School of Physical Education, Guangxi University, Nanning, China
| | - Hong Li
- College of Physical Education And Health, Guangxi Science & Technology Normal University, Laibin, China
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137
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Anderson JR, Jensen A. Study design synopsis: 'Omics' terminologies-A guide for the equine clinician. Equine Vet J 2024. [PMID: 39210537 DOI: 10.1111/evj.14404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024]
Affiliation(s)
- James Ross Anderson
- Department of Veterinary Anatomy, Physiology and Pathology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - Anders Jensen
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
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138
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Veloso AD, Videira RA, Oliveira MC. Carbon Nanomaterials with SOD-like Activity: The Effect of the Ionic Strength. Molecules 2024; 29:4098. [PMID: 39274946 PMCID: PMC11397398 DOI: 10.3390/molecules29174098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/12/2024] [Accepted: 08/22/2024] [Indexed: 09/16/2024] Open
Abstract
Electrogenerated hydrophilic carbon (EHC) nanomaterials emerge as a highly attractive option for mimicking the activity of the superoxide dismutase enzyme (SOD) due to their exceptional water solubility and electron-transfer reversibility. Motivated by these properties, the EHC nanomaterials were utilized to assess the effect of ionic strength on the SOD-like activity. Superoxide anion radicals (O2•-) were generated using the hypoxanthine-xanthine oxidase system, with nitro blue tetrazolium chloride serving as the detecting system. A significant boost in the SOD-like activity was found via the addition of an electrolyte to the as-prepared nanomaterial solution. The effect of the electrolyte cation (Na+ and K+), as well as its counterion (Cl-, CH3COO-, and H2PO4-/HPO42-) were analyzed. Based on these studies, a new formulation for the preparation of the carbon-based nanomaterial was established. It was demonstrated that the SOD-like activity follows an enzyme-type catalytic activity rather than the stoichiometric scavenging of the superoxide anion radical. It was concluded that 12.71 µg/mL of the EHC nanomaterial exhibits catalytic activity comparable to 15.46 µg/mL of the native Cu/Zn-SOD enzyme. This study provides a starting point for the development of a new nanotool to fight the oxidative stress associated with pathophysiological conditions where SOD activity is depleted.
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Affiliation(s)
- Andreia D Veloso
- Centro de Química-Vila Real (CQ-VR) and Chemistry Department, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
| | - Romeu A Videira
- REQUIMTE/LAQV, Laboratory of Pharmacognosy, Chemistry Department, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Maria C Oliveira
- Centro de Química-Vila Real (CQ-VR) and Chemistry Department, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
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139
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Gonca M, Gul BB, Sert MF. How successful is the CatBoost classifier in diagnosing different dental anomalies in patients via sella turcica and vertebral morphologic alteration? BMC Med Inform Decis Mak 2024; 24:237. [PMID: 39210331 PMCID: PMC11360316 DOI: 10.1186/s12911-024-02643-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND To investigate how successfully the classification of patients with and without dental anomalies was achieved through four experiments involving different dental anomalies. METHODS Lateral cephalometric radiographs (LCRs) from 526 individuals aged between 14 and 22 years were included. Four experiments involving different dental anomalies were created. Experiment 1 included the total dental anomaly group and control group (CG). Experiment 2 only had dental agenesis and a CG. Experiment 3 consisted of only palatally impacted canines and the CG. Experiment 4 comprised patients with various dental defects (transposition, hypodontia, agenesis-palatally affected canine, peg-shaped laterally, hyperdontia) and the CG. Twelve sella measurements and assessments of the ponticulus posticus and posterior arch deficiency were given as input. The target was to distinguish between anomalies and controls. The CatBoost algorithm was applied to classify patients with and without dental anomalies. RESULTS In order from lowest to highest, the predictive accuracies of the experiments were as follows: experiment 4 < experiment 2 < experiment 3 < experiment 1. The sella area (SA) (mm2) was the most important variable in experiment 1. The most significant variable in prediction model of experiment 2 was sella height posterior (SHP) (mm). Sella area (SA) (mm2) was again the most relevant variable in experiment 3. The most important variable in experiment 4 was sella height median (SHM) (mm). CONCLUSIONS Every prediction model from the four experiments prioritized different variables. These findings may suggest that related research should focus on specific traits from a diagnostic perspective.
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Affiliation(s)
- Merve Gonca
- Faculty of Dentistry, Department of Orthodontics, Recep Tayyip Erdoğan University, Rize, Turkey.
| | - Busra Beser Gul
- Faculty of Dentistry, Department of Orthodontics, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Mehmet Fatih Sert
- Department of Business Administration (Quantitative Methods), Gaziantep University, Gaziantep, Turkey
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140
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Dias IRSB, Costa RGA, Rodrigues ACBDC, Silva SLR, Oliveira MDS, Soares MBP, Dias RB, Valverde LF, Gurgel Rocha CA, Cairns LV, Mills KI, Bezerra DP. Bithionol eliminates acute myeloid leukaemia stem-like cells by suppressing NF-κB signalling and inducing oxidative stress, leading to apoptosis and ferroptosis. Cell Death Discov 2024; 10:390. [PMID: 39209810 PMCID: PMC11362533 DOI: 10.1038/s41420-024-02148-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 08/09/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024] Open
Abstract
Acute myeloid leukaemia (AML) is a lethal bone marrow neoplasm caused by genetic alterations in blood cell progenitors. Leukaemic stem cells (LSCs) are responsible for the development of AML, drug resistance and relapse. Bithionol is an old anthelmintic drug with potential antibacterial, antiviral, antifungal, anti-Alzheimer, and antitumour properties. In this work, we focused on the anti-AML LSC properties of bithionol. This compound inhibited the viability of both solid and haematological cancer cells, suppressed AML stem-like cells, and inhibited AML growth in NSG mice at a dosage of 50 mg/kg, with tolerable systemic toxicity. Bithionol significantly reduced the levels of phospho-NF-κB p65 (Ser529) and phospho-NF-κB p65 (Ser536) and nuclear NF-κB p65 translocation in AML cells, indicating that this molecule can suppress NF-κB signalling. DNA fragmentation, nuclear condensation, cell shrinkage, phosphatidylserine externalisation, loss of transmembrane mitochondrial potential, caspase-3 activation and PARP-(Asp 214) cleavage were detected in bithionol-treated AML cells, indicating the induction of apoptosis. Furthermore, this compound increased mitochondrial superoxide levels, and bithionol-induced cell death was partially prevented by cotreatment with the selective ferroptosis inhibitor ferrostatin-1, indicating the induction of ferroptosis. In addition, bithionol synergised with venetoclax in AML cells, indicating the translational potential of bithionol to enhance the effects of venetoclax in patients with AML. Taken together, these data indicate that bithionol is a potential new anti-AML drug.
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Affiliation(s)
- Ingrid R S B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
| | - Rafaela G A Costa
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
| | | | - Suellen L R Silva
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
| | - Maiara de S Oliveira
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
| | - Milena B P Soares
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
- SENAI Institute for Innovation in Advanced Health Systems, SENAI CIMATEC, Salvador, BA, Brazil
| | - Rosane B Dias
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
- Department of Propaedeutics, Faculty of Dentistry of the Federal University of Bahia (UFBA), Salvador, Bahia, Brazil
- Department of Biological Sciences, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
| | - Ludmila F Valverde
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
- Department of Dentistry, Federal University of Sergipe, Lagarto, Sergipe, Brazil
| | - Clarissa A Gurgel Rocha
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil
- Department of Propaedeutics, Faculty of Dentistry of the Federal University of Bahia (UFBA), Salvador, Bahia, Brazil
- Center for Biotechnology and Cell Therapy, D'Or Institute for Research and Education (IDOR), Salvador, Bahia, Brazil
| | - Lauren V Cairns
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Ken I Mills
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Daniel P Bezerra
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Salvador, Bahia, Brazil.
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141
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Piva G, Storari A, Battaglia Y, Manfredini F, Lamberti N. Exercise, Dialysis, and Environment: A Narrative Review in an Ecological Perspective. Kidney Blood Press Res 2024; 49:773-786. [PMID: 39197432 DOI: 10.1159/000540910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Accepted: 08/11/2024] [Indexed: 09/01/2024] Open
Abstract
BACKGROUND Patient empowerment and environmental sustainability may contribute to creating efficient and resilient healthcare models. Chronic kidney diseases call for a sustainable approach aimed at improving physical function and mental health of patients and possibly contributing to the slowing down of the evolution toward the end stage of renal disease (ESRD) with a reduction of the environmental and economic impact. SUMMARY Multidisciplinary interventions should be implemented particularly, at the final stages when patients are exposed to sedentariness, reduced health-related quality of life (HR-QoL), high cardiovascular morbidity and mortality, and the healthcare services to high costs, and participation in environmental pollution. Ecological strategies based on specific nutritional approaches, exercise, and environment should be designed and tested. In particular, the introduction to physical exercise represents a useful replacement therapy to counteract the hazards derived from the sedentary behavior of ESRD patients, with low physical function associated with poor clinical outcomes. A more active and healthy lifestyle, particularly in the natural environment, could impact HR-QoL, mental and physical well-being but also on socialization, with lower anxiety and fatigue stress levels. Otherwise, combining sustainable exercise models into the patient's daily routine can be enhanced by the biophilic design called to reproduce a natural environment in the dialysis center. Finally, the involvement of the personnel and the health professionals in properly managing the exercise interventions and the related factors (location, modality, dose, intensity, and duration) might improve the patients' participation. In particular, ecological programs should be broadly inclusive and aimed to target the lowest performing populations through minimal feasible doses of exercise. KEY MESSAGES Moving toward an ecological framework of lifestyle change in the very advanced stages of kidney disease, the potential synergies between environment, diet, and exercise may improve the physical and mental health of the patients and reduce the impact of dialysis.
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Affiliation(s)
- Giovanni Piva
- Unit of Nephrology, University Hospital of Ferrara, Ferrara, Italy
| | - Alda Storari
- Unit of Nephrology, University Hospital of Ferrara, Ferrara, Italy
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Yuri Battaglia
- Department of Medicine, University of Verona, Verona, Italy
- Nephrology and Dialysis Unit, Pederzoli Hospital, Peschiera del Garda, Italy
| | - Fabio Manfredini
- Program of Vascular Rehabilitation and Exercise Medicine, University Hospital of Ferrara, Ferrara, Italy
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Nicola Lamberti
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy,
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142
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Gracheva E, Wang Y, Zhu J, Wang F, Matt A, Fishman M, Liang H, Zhou C. Dual color optogenetic tool enables heart arrest, bradycardic, and tachycardic pacing in Drosophila melanogaster. Commun Biol 2024; 7:1056. [PMID: 39191986 DOI: 10.1038/s42003-024-06703-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 08/08/2024] [Indexed: 08/29/2024] Open
Abstract
In order to facilitate cardiovascular research to develop non-invasive optical heart pacing methods, we have generated a double-transgenic Drosophila melanogaster (fruit fly) model suitable for optogenetic pacing. We created a fly stock with both excitatory H134R-ChR2 and inhibitory eNpHR2.0 opsin transgenes. Opsins were expressed in the fly heart using the Hand-GAL4 driver. Here we describe Hand > H134R-ChR2; eNpHR2.0 model characterization including bi-directional heart control (activation and inhibition) upon illumination of light with distinct wavelengths. Optical control and real-time visualization of the heart function were achieved non-invasively using an integrated light stimulation and optical coherence microscopy (OCM) system. OCM produced high-speed and high-resolution imaging; simultaneously, the heart function was modulated by blue (470 nm) or red (617 nm) light pulses causing tachycardia, bradycardia and restorable cardiac arrest episodes in the same animal. The irradiance power levels and illumination schedules were optimized to achieve successful non-invasive bi-directional heart pacing in Drosophila larvae and pupae.
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Affiliation(s)
- Elena Gracheva
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Yuxuan Wang
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Jiantao Zhu
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Fei Wang
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Abigail Matt
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Matthew Fishman
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
- Department of Computer Science and Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Hongwu Liang
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA
| | - Chao Zhou
- Department of Biomedical Engineering, Washington University in St Louis, 1 Brookings Dr, St Louis, MO, USA.
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Meldrum K, Hornby-Turner Y, Wallace V, Russell SG, Quigley R, Strivens E. Health promotion for dementia risk reduction in Indigenous populations of Canada, Aotearoa New Zealand, United States of America, and Australia: Scoping review protocol. PLoS One 2024; 19:e0309195. [PMID: 39186720 PMCID: PMC11346915 DOI: 10.1371/journal.pone.0309195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 08/06/2024] [Indexed: 08/28/2024] Open
Abstract
Health promotion programs and strategies have the potential to support people to live healthier lives. Dementia, a collective name for brain disorders that impact thinking and memory, affects over 55 million people worldwide. Currently, there is no cure for dementia, so prevention is critical. Health promotion has the potential to reduce dementia by targeting the twelve potentially modifiable risk factors. A project currently being undertaken by the research team aims to strengthen the quality of clinical care and health services that specifically address dementia risk for Australian Aboriginal and Torres Strait Islander peoples. One of the intended strategies supporting the project's aim is the need for appropriate and safe health promotion programs and resources that support dementia risk reduction. Consequently, the aim of this scoping review is to identify and determine the quality and appropriateness of existing health promotion programs and resources aimed at dementia risk reduction developed or modified for Indigenous populations of Canada, the USA, Aotearoa New Zealand, and Australia that could be incorporated into the broader project. The Joanna Briggs Institute method for scoping reviews will be used to identify programs and resources focussed on dementia risk reduction for Indigenous peoples. Searches will be limited to the English language and literature published since January 2010. Databases to be searched include: CINAHL, Medline, PsychInfo, PubMed, Scopus and Google. Data that answers the research questions will be extracted from the literature and recorded on a data charting form. A combination of quantitative and qualitative methods will be used to analyse the findings of the scoping review. Dissemination of the findings through continuing community engagement, conference presentations and publications will be led by Aboriginal and Torres Strait Islander members of the research team.
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Affiliation(s)
- Kathryn Meldrum
- College of Medicine and Dentistry and Australian Institute of Health and Tropical Medicine, Cairns, Queensland, Australia
| | - Yvonne Hornby-Turner
- College of Medicine and Dentistry and Australian Institute of Health and Tropical Medicine, Cairns, Queensland, Australia
| | - Valda Wallace
- College of Medicine and Dentistry and Australian Institute of Health and Tropical Medicine, Cairns, Queensland, Australia
| | - Sarah G. Russell
- College of Medicine and Dentistry and Australian Institute of Health and Tropical Medicine, Cairns, Queensland, Australia
- Queensland Health, Cairns and Hinterland Hospital and Health Service, Cairns, Queensland, Australia
| | - Rachel Quigley
- College of Medicine and Dentistry and Australian Institute of Health and Tropical Medicine, Cairns, Queensland, Australia
- Queensland Health, Cairns and Hinterland Hospital and Health Service, Cairns, Queensland, Australia
| | - Edward Strivens
- College of Medicine and Dentistry and Australian Institute of Health and Tropical Medicine, Cairns, Queensland, Australia
- Queensland Health, Cairns and Hinterland Hospital and Health Service, Cairns, Queensland, Australia
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Ferreira AO, Azevedo OM, Barroso C, Duarte S, Egas C, Fontes JT, Ré P, Santos AMP, Costa FO. Multi-marker DNA metabarcoding for precise species identification in ichthyoplankton samples. Sci Rep 2024; 14:19772. [PMID: 39187534 PMCID: PMC11347574 DOI: 10.1038/s41598-024-69963-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Accepted: 08/12/2024] [Indexed: 08/28/2024] Open
Abstract
Ichthyoplankton monitoring is crucial for stock assessments, offering insights into spawning grounds, stock size, seasons, recruitment, and changes in regional ichthyofauna. This study evaluates the efficiency of multi-marker DNA metabarcoding using mitochondrial cytochrome c oxidase subunit I (COI), 12S rRNA and 16S rRNA gene markers, in comparison to morphology-based methods for fish species identification in ichthyoplankton samples. Two transects with four coastal distance categories were sampled along the southern coast of Portugal, being each sample divided for molecular and morphological analyses. A total of 76 fish species were identified by both approaches, with DNA metabarcoding overperforming morphology-75 versus 11 species-level identifications. Linking species-level DNA identifications with higher taxonomic morphological identifications resolved several uncertainties associated with traditional methods. Multi-marker DNA metabarcoding improved fish species detection by 20-36% compared to using a single marker/amplicon, and identified 38 species in common, reinforcing the validity of our results. PERMANOVA analysis revealed significant differences in species communities based on the primer set employed, transect location, and distance from the coast. Our findings underscore the potential of DNA metabarcoding to assess ichthyoplankton diversity and suggest that its integration into routine surveys could enhance the accuracy and comprehensiveness of fish stock assessments.
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Affiliation(s)
- André O Ferreira
- Centre of Molecular and Environmental Biology (CBMA) and ARNET-Aquatic Research Network Associated Laboratory, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
| | - Olga M Azevedo
- Centre of Marine Sciences (CCMAR), University of Algarve, 8005-139, Faro, Portugal
- Division of Ecology and Evolution, Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia
| | - Cristina Barroso
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504, Coimbra, Portugal
- Biocant-Transfer Technology Association, 3060-197, Cantanhede, Portugal
| | - Sofia Duarte
- Centre of Molecular and Environmental Biology (CBMA) and ARNET-Aquatic Research Network Associated Laboratory, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Conceição Egas
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, 3004-504, Coimbra, Portugal
- Biocant-Transfer Technology Association, 3060-197, Cantanhede, Portugal
| | - João T Fontes
- Centre of Molecular and Environmental Biology (CBMA) and ARNET-Aquatic Research Network Associated Laboratory, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Pedro Ré
- MARE-Marine and Environmental Sciences Centre and ARNET-Aquatic Research Network Associated Laboratory, Faculdade de Ciências da Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - A Miguel P Santos
- Centre of Marine Sciences (CCMAR), University of Algarve, 8005-139, Faro, Portugal
- Portuguese Institute for the Sea and the Atmosphere (IPMA), 1749-077, Lisboa, Portugal
| | - Filipe O Costa
- Centre of Molecular and Environmental Biology (CBMA) and ARNET-Aquatic Research Network Associated Laboratory, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
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Yang Y, Hartmann P, Schnabl B. Fecal gelatinase does not predict mortality in patients with alcohol-associated hepatitis. MICROBIAL CELL (GRAZ, AUSTRIA) 2024; 11:328-338. [PMID: 39206205 PMCID: PMC11350238 DOI: 10.15698/mic2024.08.836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 08/09/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024]
Abstract
Alcohol-associated liver disease is highly prevalent worldwide, with alcohol-associated hepatitis as a severe form characterized by substantial morbidity, mortality, and economic burden. Gut bacterial dysbiosis has been linked to progression of alcohol-associated hepatitis. Fecal cytolysin secreted by the pathobiont Enterococcus faecalis (E. faecalis) is associated with increased mortality in patients with alcohol-associated hepatitis. Although gelatinase is considered a virulence factor in E. faecalis, its prevalence and impact on alcohol-associated hepatitis patient outcomes remains unclear. In this study, 20 out of 65 (30.8%) patients with alcohol-associated hepatitis tested positive for gelatinase in their stool. There were no significant differences in 30-day and 90-day mortality between gelatinase-positive and gelatinase-negative patients (p=0.97 and p=0.48, respectively). Fecal gelatinase had a low discriminative ability for 30-day mortality (area under the curve [AUC] 0.50 vs fibrosis-4 Index (FIB-4) 0.75) and 90-day mortality compared with other established liver disease markers (AUC 0.57 vs FIB-4 0.79 or 'age, serum bilirubin, INR, and serum creatinine' (ABIC) score 0.78). Furthermore, fecal gelatinase was not an important feature for 30-day or 90-day mortality per random forest analysis. Finally, gelatinase-positive patients with alcohol-associated hepatitis did not exhibit more severe liver disease compared with gelatinase-negative patients. In conclusion, fecal gelatinase does not predict mortality or disease severity in patients with alcohol-associated hepatitis from our cohort.
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Affiliation(s)
- Yongqiang Yang
- Department of Medicine, University of California San DiegoCA, 92093USA
| | - Phillipp Hartmann
- Department of Pediatrics, University of California San DiegoCA, 92093USA
- Division of Gastroenterology, Hepatology & Nutrition, Rady Children's Hospital San DiegoCA, San Diego, 92123USA
| | - Bernd Schnabl
- Department of Medicine, University of California San DiegoCA, 92093USA
- Department of Medicine, VA San Diego Healthcare SystemCA, San Diego, 92161USA
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146
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Messori A, Romeo MR, Rivano M, Trippoli S. Real-world data on the effectiveness of TYRX and TauroPace for preventing CIED infections. AMERICAN JOURNAL OF CARDIOVASCULAR DISEASE 2024; 14:220-229. [PMID: 39309111 PMCID: PMC11410787 DOI: 10.62347/dshg1684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Accepted: 08/19/2024] [Indexed: 09/25/2024]
Abstract
BACKGROUND The implantation of cardiac implantable electronic devices (CIEDs) carries a known risk of infection. Two devices (TYRX and TauroPace) have been proposed to reduce this risk. METHODS The aim of our study was to compare the effectiveness of TauroPace and TYRX. Real-world comparative studies were included. Data analysis was based on reconstruction of individual patient data from Kaplan-Meier curves using an artificial intelligence algorithm. The endpoint was CIED infection or systemic infection. Statistical tests included heterogeneity assessment, superiority testing, and non-inferiority testing. The primary outcome measure was the hazard ratio (HR) with confidence interval (CI). RESULTS Our literature search identified two real-world studies suitable for our analysis. Follow-up was 12 months for TauroPace (654 patients) and 60 months for TYRX (872 patients), with a total of 2,083 controls. There was no heterogeneity among controls. Compared to the pooled control group, patients treated with TYRX or TauroPace had fewer CIED infections (HR, 0.3892; 95% CI, 0.2042-0.7419; P=0.00414; HR, 0.3313; 95% CI, 0.1005-1.0925; P=0.06958, respectively). When testing for non-inferiority of TauroPace vs. TYRX, the comparison yielded a HR of 0.8494 (in favor of TYRX) with a 90% CI of 0.27-2.63; this CI of TauroPace did not meet the non-inferiority criterion set at HR>0.75 (i.e., relative difference ≤25%). CONCLUSIONS Both treatments had some important drawbacks. Regarding TYRX, more selective use in higher-risk patients should be advocated to improve its cost-effectiveness, but robust evidence is still lacking. Regarding TauroPace, our analysis testing for a non-inferiority margin of ≤25% did not meet this demonstration.
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Affiliation(s)
- Andrea Messori
- Centro Operativo HTA, Regional Health ServiceRegione Toscana, Firenze, Italy
| | | | | | - Sabrina Trippoli
- Centro Operativo HTA, Regional Health ServiceRegione Toscana, Firenze, Italy
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147
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Roslund KJ, Ramsey JJ, Rutkowsky JM, Zhou Z, Slupsky CM. Two-month ketogenic diet alters systemic and brain metabolism in middle-aged female mice. GeroScience 2024:10.1007/s11357-024-01314-w. [PMID: 39180613 DOI: 10.1007/s11357-024-01314-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 08/07/2024] [Indexed: 08/26/2024] Open
Abstract
The ketogenic diet (KD) is a very low-carbohydrate, high-fat diet that reduces glucose catabolism and enhances β-oxidation and ketogenesis. While research in female rodents is limited, research in male rodents suggests that ketogenic interventions initiated at midlife may slow age-related cognitive decline, as well as preserve muscle mass and physical function later in life. This study aimed to investigate the effects of a KD on global metabolic changes in middle-aged females to inform potential mechanisms behind the anti-aging effects of this diet in an understudied sex. Targeted 1H-NMR metabolomics was conducted on serum, the liver, the kidney, and the gastrocnemius muscle, as well as the cortex and the hippocampal brain regions in 16-month-old female mice after a 2-month KD. Analysis of the serum and liver metabolome revealed that the 2-month KD resulted in increased concentrations of fatty acid catabolism metabolites, as well as system-wide elevations in ketones, consistent with the ketogenic phenotype. Metabolites involved in the glucose-alanine cycle were altered in the gastrocnemius muscle, serum and the liver. Other tissue-specific alterations were detected, including distinct effects on hepatic and renal one-carbon metabolism, as well as region specific differences in metabolism across hippocampal and cortical parts of the brain. Alterations to hippocampal metabolites involved in myelinogenesis could relate to the potential beneficial effects of a KD on memory.
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Affiliation(s)
- Kirsten J Roslund
- Department of Nutrition, University of California Davis, Davis, CA, USA
| | - Jon J Ramsey
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Jennifer M Rutkowsky
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Zeyu Zhou
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Carolyn M Slupsky
- Department of Nutrition, University of California Davis, Davis, CA, USA.
- Department of Food Science & Technology, University of California Davis, Davis, CA, USA.
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148
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Jiang X, Zhang Z, Wu X, Li C, Sun X, Li Y, Chang A, Yang A, Yang C. Multiplex Expression Cassette Assembly: A flexible and versatile method for building complex genetic circuits in conventional vectors. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 39175411 DOI: 10.1111/pbi.14454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 07/22/2024] [Accepted: 08/09/2024] [Indexed: 08/24/2024]
Abstract
The manipulation of multiple transcription units for simultaneous and coordinated expression is not only key to building complex genetic circuits to accomplish diverse functions in synthetic biology, but is also important in crop breeding for significantly improved productivity and overall performance. However, building constructs with multiple independent transcription units for fine-tuned and coordinated regulation is complicated and time-consuming. Here, we introduce the Multiplex Expression Cassette Assembly (MECA) method, which modifies canonical vectors compatible with Golden Gate Assembly, and then uses them to produce multi-cassette constructs. By embedding the junction syntax in primers that are used to amplify functional elements, MECA is able to make complex constructs using only one intermediate vector and one destination vector via two rounds of one-pot Golden Gate assembly reactions, without the need for dedicated vectors and a coherent library of standardized modules. As a proof-of-concept, we modified eukaryotic and prokaryotic expression vectors to generate constructs for transient expression of green fluorescent protein and β-glucuronidase in Nicotiana benthamiana, genome editing to block monoterpene metabolism in tomato glandular trichomes, production of betanin in tobacco and synthesis of β-carotene in Escherichia coli. Additionally, we engineered the stable production of thymol and carvacrol, bioactive compounds from Lamiaceae family plants, in glandular trichomes of tobacco. These results demonstrate that MECA is a flexible, efficient and versatile method for building complex genetic circuits, which will not only play a critical role in plant synthetic biology, but also facilitate improving agronomic traits and pyramiding traits for the development of next-generation elite crops.
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Affiliation(s)
- Xun Jiang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Zhuoxiang Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Xiuming Wu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Changmei Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Xuan Sun
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Yiting Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Aixia Chang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Aiguo Yang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Changqing Yang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China
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Yalley AK, Ocran J, Cobbinah JE, Obodai E, Yankson IK, Kafintu-Kwashie AA, Amegatcher G, Anim-Baidoo I, Nii-Trebi NI, Prah DA. Advances in Malaria Diagnostic Methods in Resource-Limited Settings: A Systematic Review. Trop Med Infect Dis 2024; 9:190. [PMID: 39330879 PMCID: PMC11435979 DOI: 10.3390/tropicalmed9090190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/31/2024] [Accepted: 08/19/2024] [Indexed: 09/28/2024] Open
Abstract
Malaria continues to pose a health challenge globally, and its elimination has remained a major topic of public health discussions. A key factor in eliminating malaria is the early and accurate detection of the parasite, especially in asymptomatic individuals, and so the importance of enhanced diagnostic methods cannot be overemphasized. This paper reviewed the advances in malaria diagnostic tools and detection methods over recent years. The use of these advanced diagnostics in lower and lower-middle-income countries as compared to advanced economies has been highlighted. Scientific databases such as Google Scholar, PUBMED, and Multidisciplinary Digital Publishing Institute (MDPI), among others, were reviewed. The findings suggest important advancements in malaria detection, ranging from the use of rapid diagnostic tests (RDTs) and molecular-based technologies to advanced non-invasive detection methods and computerized technologies. Molecular tests, RDTs, and computerized tests were also seen to be in use in resource-limited settings. In all, only twenty-one out of a total of eighty (26%) low and lower-middle-income countries showed evidence of the use of modern malaria diagnostic methods. It is imperative for governments and other agencies to direct efforts toward malaria research to upscale progress towards malaria elimination globally, especially in endemic regions, which usually happen to be resource-limited regions.
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Affiliation(s)
- Akua K. Yalley
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Korle Bu, Accra P.O. Box KB 143, Ghana; (A.K.Y.); (A.A.K.-K.); (G.A.); (I.A.-B.)
| | - Joyous Ocran
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, PMB, Cape Coast, Ghana; (J.O.); (J.E.C.)
| | - Jacob E. Cobbinah
- Department of Biomedical Sciences, School of Allied Health Sciences, University of Cape Coast, PMB, Cape Coast, Ghana; (J.O.); (J.E.C.)
| | - Evangeline Obodai
- Department of Virology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra P.O. Box LG 581, Ghana;
| | - Isaac K. Yankson
- CSIR-Building and Road Research Institute, Kumasi P.O. Box UP40, Kumasi, Ghana;
| | - Anna A. Kafintu-Kwashie
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Korle Bu, Accra P.O. Box KB 143, Ghana; (A.K.Y.); (A.A.K.-K.); (G.A.); (I.A.-B.)
| | - Gloria Amegatcher
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Korle Bu, Accra P.O. Box KB 143, Ghana; (A.K.Y.); (A.A.K.-K.); (G.A.); (I.A.-B.)
| | - Isaac Anim-Baidoo
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Korle Bu, Accra P.O. Box KB 143, Ghana; (A.K.Y.); (A.A.K.-K.); (G.A.); (I.A.-B.)
| | - Nicholas I. Nii-Trebi
- Department of Medical Laboratory Sciences, School of Biomedical and Allied Health Sciences, University of Ghana, Korle Bu, Accra P.O. Box KB 143, Ghana; (A.K.Y.); (A.A.K.-K.); (G.A.); (I.A.-B.)
| | - Diana A. Prah
- West African Centre for Cell Biology of Infectious Pathogens, University of Ghana, Legon, Accra P.O. Box LG 54, Ghana
- Department of Science Laboratory Technology, Faculty of Applied Sciences, Accra Technical University, Barnes Road, Accra P.O. Box GP 561, Ghana
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Banks E, Francis V, Lin SJ, Kharfallah F, Fonov V, Lévesque M, Han C, Kulasekaran G, Tuznik M, Bayati A, Al-Khater R, Alkuraya FS, Argyriou L, Babaei M, Bahlo M, Bakhshoodeh B, Barr E, Bartik L, Bassiony M, Bertrand M, Braun D, Buchert R, Budetta M, Cadieux-Dion M, Calame DG, Cope H, Cushing D, Efthymiou S, Elmaksoud MA, El Said HG, Froukh T, Gill HK, Gleeson JG, Gogoll L, Goh ESY, Gowda VK, Haack TB, Hashem MO, Hauser S, Hoffman TL, Hogue JS, Hosokawa A, Houlden H, Huang K, Huynh S, Karimiani EG, Kaulfuß S, Korenke GC, Kritzer A, Lee H, Lupski JR, Marco EJ, McWalter K, Minassian A, Minassian BA, Murphy D, Neira-Fresneda J, Northrup H, Nyaga DM, Oehl-Jaschkowitz B, Osmond M, Person R, Pehlivan D, Petree C, Sadleir LG, Saunders C, Schoels L, Shashi V, Spillmann RC, Srinivasan VM, Torbati PN, Tos T, Zaki MS, Zhou D, Zweier C, Trempe JF, Durcan TM, Gan-Or Z, Avoli M, Alves C, Varshney GK, Maroofian R, Rudko DA, McPherson PS. Loss of symmetric cell division of apical neural progenitors drives DENND5A-related developmental and epileptic encephalopathy. Nat Commun 2024; 15:7239. [PMID: 39174524 PMCID: PMC11341845 DOI: 10.1038/s41467-024-51310-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 07/23/2024] [Indexed: 08/24/2024] Open
Abstract
Developmental and epileptic encephalopathies (DEEs) feature altered brain development, developmental delay and seizures, with seizures exacerbating developmental delay. Here we identify a cohort with biallelic variants in DENND5A, encoding a membrane trafficking protein, and develop animal models with phenotypes like the human syndrome. We demonstrate that DENND5A interacts with Pals1/MUPP1, components of the Crumbs apical polarity complex required for symmetrical division of neural progenitor cells. Human induced pluripotent stem cells lacking DENND5A fail to undergo symmetric cell division with an inherent propensity to differentiate into neurons. These phenotypes result from misalignment of the mitotic spindle in apical neural progenitors. Cells lacking DENND5A orient away from the proliferative apical domain surrounding the ventricles, biasing daughter cells towards a more fate-committed state, ultimately shortening the period of neurogenesis. This study provides a mechanism for DENND5A-related DEE that may be generalizable to other developmental conditions and provides variant-specific clinical information for physicians and families.
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Affiliation(s)
- Emily Banks
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Vincent Francis
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Sheng-Jia Lin
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Fares Kharfallah
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Vladimir Fonov
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Maxime Lévesque
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Chanshuai Han
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Gopinath Kulasekaran
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Marius Tuznik
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Armin Bayati
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | | | - Fowzan S Alkuraya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Loukas Argyriou
- Institute of Human Genetics, University Medical Center, Göttingen, Germany
| | - Meisam Babaei
- Department of Pediatrics, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Melanie Bahlo
- Walter and Eliza Hall Institute for Medical Research, Parkville, VIC, Australia
| | | | - Eileen Barr
- Department of Human Genetics, Emory University, Atlanta, GA, USA
| | - Lauren Bartik
- University of Missouri-Kansas City, School of Medicine, Kansas City, MO, USA
- Department of Pediatrics, Division of Clinical Genetics, Children's Mercy Hospital, Kansas City, MO, USA
| | | | - Miriam Bertrand
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Dominique Braun
- Department of Human Genetics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Rebecca Buchert
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Mauro Budetta
- Paediatric and Child Neurology Unit, Cava de' Tirreni AOU S. Giovanni di Dio e Ruggiero d'Aragona Hospital, Salerno, Italy
| | - Maxime Cadieux-Dion
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, MO, USA
| | - Daniel G Calame
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Heidi Cope
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Donna Cushing
- Laboratory Medicine and Genetics, Trillium Health Partners, Mississauga, ON, Canada
| | - Stephanie Efthymiou
- Department of Neuromuscular Diseases, University College London (UCL) Queen Square Institute of Neurology, London, UK
| | - Marwa Abd Elmaksoud
- Neurology Unit, Department of Pediatrics, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Huda G El Said
- Neurology Unit, Department of Pediatrics, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Tawfiq Froukh
- Department of Biotechnology and Genetic Engineering, Philadelphia University, Amman, Jordan
| | - Harinder K Gill
- Provincial Medical Genetics Program at BC Women's Health Centre, Vancouver, BC, Canada
| | - Joseph G Gleeson
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
- Rady Children's Institute for Genomic Medicine, San Diego, CA, USA
| | - Laura Gogoll
- Department of Human Genetics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Elaine S-Y Goh
- Laboratory Medicine and Genetics, Trillium Health Partners, Mississauga, ON, Canada
| | - Vykuntaraju K Gowda
- Department of Pediatric Neurology, Indira Gandhi Institute of Child Health, Bangalore, India
| | - Tobias B Haack
- Institute of Medical Genetics and Applied Genomics, University of Tübingen, Tübingen, Germany
| | - Mais O Hashem
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Stefan Hauser
- German Center of Neurodegenerative Diseases (DZNE), Tübingen, Germany
- Center for Neurology and Hertie Institute for Clinical Brain Research, University Tübingen, Tübingen, 72076, Germany
| | - Trevor L Hoffman
- Department of Regional Genetics, Southern California Kaiser Permanente Medical Group, Anaheim, CA, USA
| | | | - Akimoto Hosokawa
- Department of Paediatrics and Child Health, University of Otago, Wellington, New Zealand
| | - Henry Houlden
- Department of Neuromuscular Diseases, University College London (UCL) Queen Square Institute of Neurology, London, UK
| | - Kevin Huang
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Stephanie Huynh
- Provincial Medical Genetics Program at BC Women's Health Centre, Vancouver, BC, Canada
| | - Ehsan G Karimiani
- Molecular and Clinical Sciences Institute, St. George's, University of London, Cranmer Terrace, London, UK
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran
| | - Silke Kaulfuß
- Institute of Human Genetics, University Medical Center, Göttingen, Germany
| | - G Christoph Korenke
- Department of Neuropediatrics, University Children's Hospital, Klinikum Oldenburg, Oldenburg, Germany
| | - Amy Kritzer
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Hane Lee
- 3billion Inc, Seoul, South Korea
| | - James R Lupski
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | | | | | - Arakel Minassian
- Centre for Applied Genomics, Genetics, and Genome Biology, Hospital for Sick Children, Toronto, ON, Canada
| | - Berge A Minassian
- Department of Pediatrics and Neurology, UT Southwestern Medical Center, Dallas, TX, USA
| | - David Murphy
- Department of Clinical and Movement Neurosciences, University College London (UCL) Queen Square Institute of Neurology, London, UK
| | | | - Hope Northrup
- Department of Pediatrics, McGovern Medical School at the University of Texas Health Science Center at Houston (UTHealth) and Children's Memorial Hermann Hospital, Houston, TX, USA
| | - Denis M Nyaga
- Department of Paediatrics and Child Health, University of Otago, Wellington, New Zealand
| | | | - Matthew Osmond
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | | | - Davut Pehlivan
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Cassidy Petree
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Lynette G Sadleir
- Department of Paediatrics and Child Health, University of Otago, Wellington, New Zealand
| | - Carol Saunders
- University of Missouri-Kansas City, School of Medicine, Kansas City, MO, USA
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, MO, USA
- Center for Pediatric Genomic Medicine Children's Mercy, Kansas City, MO, USA
| | - Ludger Schoels
- German Center of Neurodegenerative Diseases (DZNE), Tübingen, Germany
- Center for Neurology and Hertie Institute for Clinical Brain Research, University Tübingen, Tübingen, 72076, Germany
| | - Vandana Shashi
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Rebecca C Spillmann
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | | | - Paria N Torbati
- Department of Medical Genetics, Next Generation Genetic Polyclinic, Mashhad, Iran
| | - Tulay Tos
- Department of Medical Genetics, University of Health Sciences, Zubeyde Hanim Research and Training Hospital of Women's Health and Diseases, Ankara, Turkey
| | - Maha S Zaki
- Human Genetics and Genome Research Institute, Clinical Genetics Department, National Research Centre, Cairo, Egypt
| | - Dihong Zhou
- University of Missouri-Kansas City, School of Medicine, Kansas City, MO, USA
- Department of Pediatrics, Division of Clinical Genetics, Children's Mercy Hospital, Kansas City, MO, USA
| | - Christiane Zweier
- Department of Human Genetics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jean-François Trempe
- Department of Pharmacology & Therapeutics and Centre de Recherche en Biologie Structurale, McGill University, Montréal, QC, Canada
| | - Thomas M Durcan
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Ziv Gan-Or
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
- Department of Human Genetics, McGill University, Montréal, QC, Canada
| | - Massimo Avoli
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
| | - Cesar Alves
- Division of Neuroradiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Gaurav K Varshney
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Reza Maroofian
- Department of Neuromuscular Diseases, University College London (UCL) Queen Square Institute of Neurology, London, UK
| | - David A Rudko
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada
- McConnell Brain Imaging Centre, the Neuro, Montréal, QC, Canada
- Department of Biomedical Engineering, McGill University, Montréal, QC, Canada
| | - Peter S McPherson
- Department of Neurology and Neurosurgery, the Neuro, McGill University, Montréal, QC, Canada.
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