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Vyatchin IG, Shevchenko UV, Dyachuk VA. Does muscle-type myosin have ADPase activity? Biochem Biophys Res Commun 2024; 693:149371. [PMID: 38096615 DOI: 10.1016/j.bbrc.2023.149371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024]
Abstract
Adenosine diphosphate (ADP) is a nucleotide that is structurally very similar to ATP but lacks one of the two high-energy bonds due to hydrolysis. In muscle studies, ADP is usually considered exclusively as a product formed during myosin cross-bridge cycling and is not otherwise involved in this process. In our study, we question the widely held view of ADP as a final product formed during muscle contraction. Using biophysical and biochemical methods, we managed to show that ADP can act as a substrate for myosins in at least three types of muscles: smooth and striated adductor muscles of bivalves (Mytilidae and Pectinidae), and also vertebrate skeletal muscles. According to our data, the differences in the effect of ATP and ADP on the optical, biochemical, and structural properties of actomyosins are exclusively quantitative. We explain the previous ideas about ADP as a compound capable of inhibiting the ATPase activity of actomyosin by the ability of ATP and ADP to depolymerize the polymeric myosin when the concentration in the medium reaches more than 0.3 mM.
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Affiliation(s)
- Ilya G Vyatchin
- Laboratory of Cell Biophysics, A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Ul. Palchevskogo 17, Vladivostok, 690041, Russia.
| | - Ulyana V Shevchenko
- Laboratory of Cell Biophysics, A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Ul. Palchevskogo 17, Vladivostok, 690041, Russia
| | - Vyacheslav A Dyachuk
- Laboratory of Cell Biophysics, A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Ul. Palchevskogo 17, Vladivostok, 690041, Russia
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2
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Li H, Zhao J, Li Y, Dong Z, Lin S, Guo B, Qi P. Transcriptome analysis reveals tissue-specific responses of Mytilus unguiculatus to Vibrio alginolyticus infection. Fish Shellfish Immunol 2024; 144:109301. [PMID: 38110106 DOI: 10.1016/j.fsi.2023.109301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/27/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023]
Abstract
Mytilus unguiculatus is an important economic bivalve species with wide consumption and aquaculture value. Disease is one of the primary limiting factors in mussel aquaculture, thus understanding the response of different tissues of M. unguiculatus to pathogens is crucial for disease prevention and control. In this study, we investigated the physiological and transcriptomic responses of the gills, adductor muscle, and mantle of M. unguiculatus infected with Vibrio alginolyticus. The results showed that V. alginolyticus infection caused inflammation and tissue structure changes in the gill, adductor muscle and mantle of M. unguiculatus. Meanwhile, the activities of superoxide dismutase and catalase in the three tissues increased, while the total antioxidant capacity decreased, suggesting that M. unguiculatus have an activated defense mechanism against infection-induced oxidative stress, despite a compromised total antioxidant capacity. Transcriptomic studies reveal that infected M. unguiculatus exhibits upregulation of endocytosis, lysosome activity, cellular apoptosis, and immune-related signaling pathways, indicating that M. unguiculatus responds to pathogen invasion by upregulating efferocytosis. Compared with the gill and adductor muscle, the mantle had a higher level of mytimycin, mytilin and myticin, and the three tissues also increased the expression of mytimycin to cope with the invasion of pathogens. In addition, the analysis of genes related to taste transduction pathways and muscle contraction and relaxation found that after infection with V. alginolyticus, M. unguiculatus may reduce appetite by inhibiting taste transduction in the gill, while improving muscle contraction of the adductor muscle and keeping the shell closed, to resist further invasion of pathogens and reduce the risk of pathogen transmission in the population.
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Affiliation(s)
- Hongfei Li
- Donghai Laboratory, Zhoushan, Zhejiang, 316021, China; National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China.
| | - Jiemei Zhao
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China
| | - Yaru Li
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China
| | - Zhenyu Dong
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China
| | - Shuangrui Lin
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China
| | - Baoying Guo
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China
| | - Pengzhi Qi
- Donghai Laboratory, Zhoushan, Zhejiang, 316021, China; National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316004, China.
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3
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Elkader HTAEA, Al-Shami AS. Microanatomy and behaviour of the date mussel's adductor and foot muscles after chronic exposure to bisphenol A, with inhibition of ATPase enzyme activities and DNA damage. Comp Biochem Physiol C Toxicol Pharmacol 2023:109684. [PMID: 37330179 DOI: 10.1016/j.cbpc.2023.109684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/06/2023] [Accepted: 06/11/2023] [Indexed: 06/19/2023]
Abstract
Environmental contaminants with estrogenic activity have recently received attention due to the potential harm they could cause to humans and wildlife. To assess the toxic effects of bisphenol A (BPA) on marine mussels, Lithophaga lithophaga were exposed for 4 weeks to 0, 0.25, 1, 2, and 5 μg/L BPA. Aside from DNA damage, a behavioural study including valve closure duration (VCD), valve opening duration (VOD), levels of malondialdehyde (MDA), and total glutathione, as well as superoxide dismutase (SOD) and ATPase activities in adductor muscle extracts, and histopathological examination of the adductor muscle and foot were performed. The behavioural response was marked by an increase in the percentage of VCD and a decrease in the percentage of VOD during 8 h. Furthermore, BPA treatments resulted in a significant concentration-dependent increase in muscle MDA and total glutathione levels. However, when compared to controls, SOD and ATPase activity was significantly reduced in the adductor muscles of BPA treatments. Histological examination of the adductor and foot muscles revealed qualitatively distinct abnormalities. DNA damage was strongly induced in a concentration-dependent manner. Our findings suggested that BPA exposure altered detoxification, antioxidation, ATPase activity, histopathological characteristics, and DNA damage, which resulted in behavioural changes. The multi-biomarker approach used suggests that clear relationships exist between genotoxic and higher-level effects in some cases, which could be used as an integrated tool to evaluate various long-term toxic effects of BPA.
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Affiliation(s)
| | - Ahmed S Al-Shami
- Zoology Department, Faculty of Science, Alexandria University, Alexandria, Egypt; Biotechnology Department, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
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4
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Park SJ, Choi YH. Relationship between Condition Index Values and Expression Levels of Gene and Protein in the Adductor Muscle of Diploid and Triploid Oysters Crassostrea gigas. Dev Reprod 2022; 26:165-174. [PMID: 36817354 PMCID: PMC9925188 DOI: 10.12717/dr.2022.26.4.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/07/2022] [Accepted: 12/16/2022] [Indexed: 01/18/2023]
Abstract
Three proteins [myosin heavy chain (MHC), filamin-C fragment (FIL-C), and actin 2 (ACT2)] were identified in adductor muscle from diploid and triploid Pacific oysters (Crassostrea gigas) and the relationship between the condition index (CI) and mRNA expression of these genes was investigated, together with the mRNA expression of molluscan insulin-related peptide (MIP), C. gigas insulin receptor-related receptor (CIR), and insulin-like growth factor binding protein complex acid labile subunit (IGFBP-ALS). Monthly changes in the CI were similar to the changes in the tissue weight rate in both groups. ACT2 and MHC mRNA expression was statistically higher in the triploid than the diploid, while FIL-C mRNA expression was significantly higher in the diploid (p<0.05). The MIP, CIR, and IGFBP-ALS mRNA expression of the diploid oysters were all significantly higher in July than in other months (p<0.05). The MIP, CIR, and IGFBP-ALS mRNA expression in the triploid oysters was high in July, but there were no significant differences (p>0.05). Changes in the expression levels of the genes investigated in this study could be used as intrinsic indicators of the annual growth, maturity, and spawning period of cultured diploid and triploid C. gigas in Tongyeong, Korea.
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Affiliation(s)
- Su-Jin Park
- Department of Fisheries Biology, Pukyong
National University, Busan 48513,
Korea
| | - Youn Hee Choi
- Department of Fisheries Biology, Pukyong
National University, Busan 48513,
Korea,Major in Aquaculture and Applied Life
Sciences, Division of Fisheries Life Sciences, Pukyong National
University, Busan 48513, Korea,Corresponding author Youn Hee
Choi, Department of Fisheries Biology, Pukyong National University, Busan 48513,
Korea, Tel: +82-51-629-5915, E-mail:
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5
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Sun X, Zhang T, Li L, Tu K, Yu T, Wu B, Zhou L, Tian J, Liu Z. MicroRNA expression signature in the striated and smooth adductor muscles of Yesso scallop Patinopecten yessoensis. Genomics 2022; 114:110409. [PMID: 35714827 DOI: 10.1016/j.ygeno.2022.110409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/25/2022] [Accepted: 06/10/2022] [Indexed: 11/18/2022]
Abstract
Increasing evidences point to the potential role of microRNAs (miRNAs) in muscle growth and development in animals. However, knowledge on the identity of miRNAs and their targets in molluscs remains largely unknown. Scallops have one large adductor muscle, composed of fast (striated) and slow (smooth) muscle types, which display great differences in muscle fibers, meat quality, cell types and molecular components. In the present study, we performed a comprehensive investigation of miRNA transcriptomes in fast and slow adductor muscles of Yesso scallop Patinopecten yessoensis. As a result, 47 differentially expressed miRNAs representing ten miRNA families were identified between the striated and smooth adductor muscles. The KEGG enrichment analysis of their target genes were mainly associated with amino acid metabolism, energy metabolism and glycan biosynthesis. The target genes of miR-133 and miR-71 were validated by the dual-luciferase reporter assays and miRNA antagomir treatment in vivo. The identification and functional validation of these different miRNAs in scallops will greatly help our understanding of miRNA regulatory mechanism that achieves the unique muscle phenotypes in scallops. The present findings provide the direct evidences for muscle-specific miRNAs involved in muscle growth and differentiation in molluscs.
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Affiliation(s)
- Xiujun Sun
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China
| | - Tianshi Zhang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China
| | - Li Li
- National Oceanographic Center, Qingdao 266104, China
| | - Kang Tu
- Putian Institute of Aquaculture Science of Fujian Province, Putian 351100, China
| | - Tao Yu
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Changdao, China
| | - Biao Wu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China
| | - Liqing Zhou
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China
| | - Jiteng Tian
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China
| | - Zhihong Liu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao 266071, China.
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6
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Song H, Wei L, Zhong M, Chen X, Xie C, Chen X, Wang X, Huang B, Liu Y, Zhang M, Qi Y, Wang X. Ambient ultraviolet B radiation induced valve behavioral acclimation of Pacific oyster which resulted from the different response strategies of smooth and striated adductor muscles. Ecotoxicol Environ Saf 2021; 228:113035. [PMID: 34863076 DOI: 10.1016/j.ecoenv.2021.113035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/18/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Light not only conveys image-forming vision but also has an impact on various physiological functions. In particular, ultraviolet B (UVB) radiation has the closest relationship with living organisms. For Pacific oysters (Crassostrea gigas), alteration of valve behavior is one of the most important ways responding to ambient UVB. In the present study, the response of adult C. gigas to sunlight (especially UVB) was evaluated by monitoring valve activity and further elucidated at the physiological and metabolomic levels. After exposure, the valve activity of C. gigas demonstrated flexible acclimation to the ambient conditions. The potential adjustment of osmoregulation and oxidative stress might be related to ambient UVB radiation. Mycosporine-like amino acids might contribute to the protection of C. gigas against UVB, while precursors of β-alanine and degradation products of 5-hydroxytryptamine might adjust the contraction of the adductor muscles. The different responses of the adductor muscles (smooth and striated) were manifested in signal transduction and metabolisms of energy and nucleotide. This study not only indicated the correlation between the valve behavioral changes in oysters and light radiation, especially UVB, but illustrated the acclimation strategies of oysters to ambient light (UVB) environment.
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Affiliation(s)
- Hongce Song
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Lei Wei
- School of Agriculture, Ludong University, Yantai 264025, PR China.
| | - Mingyu Zhong
- Ocean School, Yantai University, Yantai 264005, PR China
| | - Xi Chen
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Chaoyi Xie
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Xiao Chen
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Xiaona Wang
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Baoyu Huang
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Yaqiong Liu
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Meiwei Zhang
- School of Agriculture, Ludong University, Yantai 264025, PR China
| | - Yitao Qi
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an 710119, PR China
| | - Xiaotong Wang
- School of Agriculture, Ludong University, Yantai 264025, PR China.
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7
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Sun X, Li L, Wu B, Ge J, Zheng Y, Yu T, Zhou L, Zhang T, Yang A, Liu Z. Cell type diversity in scallop adductor muscles revealed by single-cell RNA-Seq. Genomics 2021; 113:3582-3598. [PMID: 34425225 DOI: 10.1016/j.ygeno.2021.08.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 07/26/2021] [Accepted: 08/18/2021] [Indexed: 11/28/2022]
Abstract
Studies on cell atlas in marine invertebrates provide a better understanding of cell types, stem cell maintenance, and lineages of cell differentiation. To investigate the molecular features of various cell types in molluscan muscles, we performed single-cell RNA sequencing (scRNA-seq) to map cell types in scallop adductor muscles. We uncovered the cell type-specific features of 20 cell clusters defined by the expression of multiple specific molecular markers. These cell clusters are mainly classified into four broad classes, including mesenchymal stem cells, muscle cells, neurons, and haemolymph cells. In particular, we identified a diverse repertoire of neurons in the striated adductor muscle, but not in the smooth muscle. We further reconstructed the cell differentiation events using all the cell clusters by single-cell pseudotemporal trajectories. By integrating dual BrdU-PCNA immunodetection, neuron-specific staining and electron microscopy observation, we showed the spatial distribution of mesenchymal stem cells and neurons in striated adductor muscle of scallops. The present findings will not only be useful to address the cell type-specific gene expression profiles in scallop muscles, but also provide valuable resources for cross-species comparison of marine organisms.
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Affiliation(s)
- Xiujun Sun
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Li Li
- Marine Biology Institute of Shandong Province, Qingdao 266104, China
| | - Biao Wu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Jianlong Ge
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Yanxin Zheng
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yantai 265800, China
| | - Tao Yu
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Yantai 265800, China
| | - Liqing Zhou
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Tianshi Zhang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Aiguo Yang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Zhihong Liu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China.
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8
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Castro-Claros JD, Checa A, Lucena C, Pearson JR, Salas C. Shell- adductor muscle attachment and Ca 2+ transport in the bivalves Ostrea stentina and Anomia ephippium. Acta Biomater 2021; 120:249-262. [PMID: 33035693 DOI: 10.1016/j.actbio.2020.09.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 09/14/2020] [Accepted: 09/28/2020] [Indexed: 11/15/2022]
Abstract
Among bivalve muscles, the adductors are particularly important for animal survival because they control valve closure. Most studies have addressed the type and morphology of this muscle in bivalves but few have focused on the mechanism that anchors it to the shell myostracum layer. Moreover, the possible calcium transport mechanism through the adductor muscle cells to the myostracum shell layer, which is necessary for bivalve biomineralisation, has never been addressed. Our results indicate that the muscle cell-shell attachment is mediated by the outer mantle epithelial cell layer, here termed tendon cells. These cells are modified at the muscle scar zone by the presence of actin cytoskeletal bundles, which anchor cells to the extracellular matrix via focal adhesion (or focal contact) junctions at the basal side and to extrapallial matrix at the apical side, both rich in collagen. From apical focal adhesions, bundles of collagen-rich fibres cross the extrapallial space and penetrate the myostracum shell layer. The latter constitutes one of the strongest anchoring structures among invertebrates. Numerous vesicles protrude from the tendon cells into the extrapallial space. TEM-EDX analysis reveals the presence of Ca2+ inside some of these vesicles both in tendon cells and in the extrapallial space. This suggests a potential mechanism for calcium transport from cells to the myostracum. STATEMENT OF SIGNIFICANCE: The interfaces between bivalve shells and muscular attachments are unique and of special interest as adhesive functional biomaterials, being one of the strongest invertebrate anchoring structures. We present an updated ultrastructural model of the adductor muscle-shell attachment. Muscle cells connect with the shell through epithelial `tendon cells`, which have a cytoskeleton of actin microfilaments that connect to the extracellular matrix via focal adhesions. Collagen-rich fibres arise from apical focal adhesions, cross the nanometric extrapallial space and penetrate the myostracum where they form an organic network. Calcium is present inside vesicles that are released into the extrapallial space. The lack of direct cellular control on secretion restricts the myostracal microstructure to prismatic aragonitic similar to its inorganic counterpart.
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Affiliation(s)
- Juan Diego Castro-Claros
- Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; Departamento de Biología Animal, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga Spain.
| | - Antonio Checa
- Instituto Andaluz de Ciencias de la Tierra, CSIC-Universidad de Granada, 18100 Armilla, Spain.
| | - Cristina Lucena
- Servicios Centrales de Apoyo a la Investigación (SCAI), Universidad de Málaga, 29071 Málaga, Spain.
| | - John R Pearson
- Andalusian Centre for Nanomedicine and Biotechnology (BIONAND), Campanillas, Málaga, Spain.
| | - Carmen Salas
- Instituto de Biotecnología y Desarrollo Azul (IBYDA), Universidad de Málaga, 29071 Málaga, Spain.
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Ghaly RF, Perciuleac Z, Candido KD, Knezevic NN. Athletic pubalgia misdiagnosed as lumbar radiculopathy - A case report. Surg Neurol Int 2019; 10:224. [PMID: 31819818 PMCID: PMC6884954 DOI: 10.25259/sni_505_2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 10/31/2019] [Indexed: 12/29/2022] Open
Abstract
Background: Athletic pubalgia is a painful complex syndrome encountered by many athletes involved in sports. Multiple pathologies often coexist, and many systems can refer pain to the groin. The current case reflects the failure to distinguish pubalgia from lumbar radiculopathy. Case Description: Originally, a 47-year-old male with left-sided inner thigh pain was diagnosed as having a L3-4-disc herniation and spinal stenosis; he underwent a L3-4 and L4-5 laminectomy/discectomy. For 2 years postoperatively, the pain persisted. Ultimately, he underwent surgical reinsertion of the adductor muscle and experienced immediate and sustained pain relief. Conclusion: This case report highlights how pubalgia may be misdiagnosed as a lumbar disc herniation and may inadvertently lead to unnecessary lumbar surgery.
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Affiliation(s)
- Ramsis F Ghaly
- Department of Anesthesiology, Advocate Illinois Masonic Medical Center, Chicago, Illinois, USA.,Ghaly Neurosurgical Associates, Aurora, Illinois, USA.,Department of Anesthesiology, University of Illinois, Chicago, Illinois, USA
| | - Zinaida Perciuleac
- Department of Anesthesiology, Advocate Illinois Masonic Medical Center, Chicago, Illinois, USA
| | - Kenneth D Candido
- Department of Anesthesiology, Advocate Illinois Masonic Medical Center, Chicago, Illinois, USA.,Department of Anesthesiology, University of Illinois, Chicago, Illinois, USA
| | - Nebojsa Nick Knezevic
- Department of Anesthesiology, Advocate Illinois Masonic Medical Center, Chicago, Illinois, USA.,Department of Anesthesiology, University of Illinois, Chicago, Illinois, USA
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10
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Sun X, Zheng Y, Yu T, Wu B, Liu Z, Zhou L, Tian J, Yang A. Developmental dynamics of myogenesis in Yesso Scallop Patinopecten yessoensis. Comp Biochem Physiol B Biochem Mol Biol 2018; 228:51-60. [PMID: 30496816 DOI: 10.1016/j.cbpb.2018.11.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 11/16/2018] [Indexed: 10/27/2022]
Abstract
The development of bivalves has been extensively studied over the last 150 years. Despite this, the developmental dynamics of myogenesis in bivalves remains largely unknown, particularly at the early developmental stages. In the present study, we investigate the characteristics of muscle development of Yesso scallop Patinopecten yessoensis by phalloidin staining, light, electron and confocal microscopy. Myoblasts containing chaotic myofilaments are initially found in the blastocoel of trochophore, and become more organized during the transformation from trochophore into veliger. This is followed by a well-structured musculature including an anterior adductor, velum retractors and ventral retractors at the early veliger stage. With development into late veliger, larval muscle system is composed of the branched velum retractors and ventral retractors, anterior and posterior adductors. The most striking change for pediveliger is the development of foot retractor and mantle related muscles at this stage. During metamorphosis, the retractor muscles and anterior adductor undergo the irreversible shrink until vanishing completely towards the end of larval life, which coincide with the growth of foot retractor and mantle margin. All retractor muscles are found to be composed of striated fibres, whereas the adductor muscles have both smooth and striated components. The present study provides new evidences on the dynamic pattern of myogenesis during embryonic and larval development in scallops, which will greatly improve our understanding of scallop myogenesis and provide the basis for comparative analysis of muscle development in bivalves.
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Affiliation(s)
- Xiujun Sun
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Yanxin Zheng
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Changdao, China
| | - Tao Yu
- Changdao Enhancement and Experiment Station, Chinese Academy of Fishery Sciences, Changdao, China
| | - Biao Wu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Zhihong Liu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Liqing Zhou
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Jiteng Tian
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Aiguo Yang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China.
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11
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Yang D, Liang S, Yang Q, Liu D, Qin Z, Zhang Z. Expression characteristics and functional analysis of Krüppel-like factor 4 in adductor muscle and mantle of Zhikong scallop Chlamys farreri. Dev Genes Evol 2018; 228:95-103. [PMID: 29502185 DOI: 10.1007/s00427-018-0606-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 02/06/2018] [Indexed: 11/25/2022]
Abstract
Krüppel-like factor 4 (KLF4) is an important transcription factor involving in formation and maintenance of muscles in mammals. However, no data are available on KLF4 function in shellfish muscles which play vital roles in the movement, stress response, and physiology in shellfish. In the present study, we revealed that the Klf4 mRNA of Zhikong scallop Chlamys farreri was expressed in most tissues, which has high level in adductor muscle, mantle, kidney, and testis. Positive signals of the Klf4 mRNA and protein were visible in all skeletal muscle fibers of adductor muscle, and all the cells of C. farreri mantle. Furthermore, the knockdown of Klf4 mRNA in adductor muscle and mantle by means of in vivo RNA interference led to some different phenotypes, including disordered arrangement of muscle fibers in adductor muscle and mantle, abnormal structures of skeletal muscles, and reduced muscle fibers under endepidermis of mantle. Our findings demonstrated that Klf4 plays important roles in maintenance of muscle functions in C. farreri adductor muscle and mantle, and suggested that its regulatory way in skeletal muscle may be different from the smooth muscle in shellfish.
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Affiliation(s)
- Dandan Yang
- Key Laboratory of Marine Genetics and Breeding, (Ocean University of China), Ministry of Education, Qingdao, 266003, China
| | - Shaoshuai Liang
- Key Laboratory of Marine Genetics and Breeding, (Ocean University of China), Ministry of Education, Qingdao, 266003, China
| | - Qiankun Yang
- Key Laboratory of Marine Genetics and Breeding, (Ocean University of China), Ministry of Education, Qingdao, 266003, China
| | - Danwen Liu
- Key Laboratory of Marine Genetics and Breeding, (Ocean University of China), Ministry of Education, Qingdao, 266003, China
| | - Zhenkui Qin
- Key Laboratory of Marine Genetics and Breeding, (Ocean University of China), Ministry of Education, Qingdao, 266003, China.
| | - Zhifeng Zhang
- Key Laboratory of Marine Genetics and Breeding, (Ocean University of China), Ministry of Education, Qingdao, 266003, China.
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12
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Berik N, Çankırılıgil EC, Gül G. Mineral content of smooth scallop (Flexopecten glaber) caught Canakkale, Turkey and evaluation in terms of food safety. J Trace Elem Med Biol 2017; 42:97-102. [PMID: 28595798 DOI: 10.1016/j.jtemb.2017.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 03/19/2017] [Accepted: 04/24/2017] [Indexed: 12/13/2022]
Abstract
In this research, one of the most promising scallop species, smooth scallop (Flexopecten glaber) was studied. According to our findings, smooth scallop has beneficial micro and macro minerals, fat and carbohydrate just before the spawning. While the ratios protein, ash and water decreased from autumn to summer, ratio of crude fat increased till reproduction season in late spring and decreased in summer (P<0.05). In digestive glands, aluminum, bromine, cadmium, calcium, chromium, copper, iron, manganese, nickel, and zinc were detected more compared to adductor muscles (P<0.05). However; boron, magnesium and potassium were found more in adductor muscles (P<0.05) and there were no significant statistically differences in cobalt and lead (P>0.05). Most of the elements in the both tissues except K and Mg increased till summer. On the other hand, two of the most toxic metals, cadmium and aluminum were mostly accumulated in the digestive gland of smooth scallop. It is recommended that; digestive gland of scallops should be removed before consuming in terms of food safety. Besides, scallops are convenient to be processed, because of easy removal muscle tissue from internal organs.
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Affiliation(s)
- Nermin Berik
- Department of Fisheries and Processing Technology, Faculty of Marine Sciences and Technology, Canakkale Onsekiz Mart University, 17100 Canakkale, Turkey
| | - Ekrem Cem Çankırılıgil
- Central Fisheries Research Institute, Vali Adil Yazar Cad., No: 14, 61250 Yomra, Trabzon, Turkey.
| | - Güzin Gül
- Institute of Marine Sciences and Management, Istanbul University, Vefa, 34134 Istanbul, Turkey
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