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Investigation on the Influencing Factors Related to Quality of Life of Adult Epilepsy Patients in Wenzhou, China, Based on Structural Equation Model. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:4336622. [PMID: 36212244 PMCID: PMC9534719 DOI: 10.1155/2022/4336622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/17/2022] [Accepted: 08/04/2022] [Indexed: 11/17/2022]
Abstract
Objective. The aim of the study is to investigate the influencing factors of quality of life in adult patients with epilepsy in Wenzhou in China. Methods. A total of 190 patients who visited our hospital from July 2019 to February 2021 were included in the study. Demographic data and disease status were collected. Moreover, QOLIE-31, PSQI, ESS, HAMD-17, and GAD-7 were used in the questionnaire survey. Structural equation model fitting was used to analyze the influencing factors of quality of life in adult patients with epilepsy. Results. The scores of the dimension of onset worry in men were greater than those of women (P = 0.049), and the scores of the dimension of life satisfaction were lower than women (P = 0.047). The scores of cognitive function decreased with age (P = 0.047). The scores of quality of life of unemployed and drinking patients significantly decreased
. The score of quality of life positively correlated with good economic status and family relations
. The score of emotional health increased first and then decreased with the course of the disease. With the decrease in seizure frequency and the extension of months without a seizure, the score of quality of life gradually increased. Furthermore, the structural equation model showed that health status was directly correlated to the quality of life of patients with epilepsy. Conclusion. Male, unemployment, drinking, older age, and disease are negatively related to the quality of life in patients with epilepsy. However, good economic status, good family relations, and good colleague relationships are positively related to the quality of life.
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Yuan Z, Qu Z, Duan B, Wang T, Xu J, Xia B. Is amyloid fibrillation related to 3D domain swapping for the C-terminal domain of SARS-CoV main protease? Int J Biol Macromol 2021; 197:68-76. [PMID: 34953805 PMCID: PMC8694786 DOI: 10.1016/j.ijbiomac.2021.12.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/02/2021] [Accepted: 12/12/2021] [Indexed: 12/02/2022]
Abstract
The C-terminal domain of SARS-CoV main protease (Mpro-C) can form 3D domain-swapped dimer by exchanging the α1-helices fully buried inside the protein hydrophobic core, under non-denaturing conditions. Here, we report that Mpro-C can also form amyloid fibrils under the 3D domain-swappable conditions in vitro, and the fibrils are not formed through runaway/propagated domain swapping. It is found that there are positive correlations between the rates of domain swapping dimerization and amyloid fibrillation at different temperatures, and for different mutants. However, some Mpro-C mutants incapable of 3D domain swapping can still form amyloid fibrils, indicating that 3D domain swapping is not essential for amyloid fibrillation. Furthermore, NMR H/D exchange data and molecular dynamics simulation results suggest that the protofibril core region tends to unpack at the early stage of 3D domain swapping, so that the amyloid fibrillation can proceed during the 3D domain swapping process. We propose that 3D domain swapping makes it possible for the unpacking of the amyloidogenic fragment of the protein and thus accelerates the amyloid fibrillation process kinetically, which explains the well-documented correlations between amyloid fibrillation and 3D domain swapping observed in many proteins.
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Affiliation(s)
- Zhiliang Yuan
- Beijing Nuclear Magnetic Resonance Center, Peking University, Beijing 100871, China; School of Life Sciences, Peking University, Beijing 100871, China
| | - Zhi Qu
- Beijing Nuclear Magnetic Resonance Center, Peking University, Beijing 100871, China; College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Bo Duan
- Beijing Nuclear Magnetic Resonance Center, Peking University, Beijing 100871, China; College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Tianyi Wang
- Beijing Nuclear Magnetic Resonance Center, Peking University, Beijing 100871, China; College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jiajun Xu
- Beijing Nuclear Magnetic Resonance Center, Peking University, Beijing 100871, China; School of Life Sciences, Peking University, Beijing 100871, China
| | - Bin Xia
- Beijing Nuclear Magnetic Resonance Center, Peking University, Beijing 100871, China; School of Life Sciences, Peking University, Beijing 100871, China; College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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Abstract
A rapid-acting insulin lispro and long-acting insulin glargine are commonly used for the treatment of diabetes. Clinical cases have described the formation of injectable amyloidosis with these insulin analogues, but their amyloid core regions of fibrils were unknown. To reveal these regions, we have analysed the hydrolyzates of insulin fibrils and its analogues using high-performance liquid chromatography and mass spectrometry methods and found that insulin and its analogues have almost identical amyloid core regions that intersect with the predicted amyloidogenic regions. The obtained results can be used to create new insulin analogues with a low ability to form fibrils. Abbreviations a.a., amino acid residues; HPLC-MS, high-performance liquid chromatography/mass spectrometry; m/z, mass-to-charge ratio; TEM, transmission electron microscopy.
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Affiliation(s)
- Alexey K Surin
- Institute of Protein Research, Russian Academy of Sciences , Pushchino, Russian Federation.,State Research Center for Applied Microbiology and Biotechnology , Obolensk, Russian Federation.,The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences , Pushchino, Russian Federation
| | - Sergei Yu Grishin
- Institute of Protein Research, Russian Academy of Sciences , Pushchino, Russian Federation
| | - Oxana V Galzitskaya
- Institute of Protein Research, Russian Academy of Sciences , Pushchino, Russian Federation.,Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences , Pushchino, Russian Federation
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The effect of three polyphenols and some other antioxidant substances on amyloid fibril formation by Human cystatin C. Neurochem Int 2020; 140:104806. [DOI: 10.1016/j.neuint.2020.104806] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/26/2020] [Accepted: 07/07/2020] [Indexed: 01/24/2023]
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Katina NS, Suvorina MY, Grigorashvili EI, Marchenkov VV, Ryabova NA, Nikulin AD, Surin AK. Identification of Regions in Apomyoglobin that Form Intermolecular Interactions in Amyloid Aggregates Using High-Performance Mass Spectrometry. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934817130056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Katina NS, Grigorashvili EI, Suvorina MY, Ilyina NB, Ryabova NA, Selivanova OM, Surin AK. Amyloid Core Wild-Type Apomyoglobin and Its Mutant Variants Is Formed by Different Regions of the Polypeptide Chain. Mol Biol 2018. [DOI: 10.1134/s0026893318010089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Perlenfein TJ, Mehlhoff JD, Murphy RM. Insights into the mechanism of cystatin C oligomer and amyloid formation and its interaction with β-amyloid. J Biol Chem 2017; 292:11485-11498. [PMID: 28487367 DOI: 10.1074/jbc.m117.786558] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/21/2017] [Indexed: 01/12/2023] Open
Abstract
Cystatin C (CysC) is a versatile and ubiquitously-expressed member of the cysteine protease inhibitor family that is present at notably high concentrations in cerebrospinal fluid. Under mildly denaturing conditions, CysC forms inactive domain-swapped dimers. A destabilizing mutation, L68Q, increases the rate of domain-swapping and causes a fatal amyloid disease, hereditary cystatin C amyloid angiopathy. Wild-type (wt) CysC will also aggregate into amyloid fibrils under some conditions. Propagated domain-swapping has been proposed as the mechanism by which CysC fibrils grow. We present evidence that a CysC mutant, V57N, stabilized against domain-swapping, readily forms fibrils, contradicting the propagated domain-swapping hypothesis. Furthermore, in physiological buffer, wt CysC can form oligomers without undergoing domain-swapping. These non-swapped oligomers are identical in secondary structure to CysC monomers and completely retain protease inhibitory activity. However, unlike monomers or dimers, the oligomers bind fluorescent dyes that indicate they have characteristics of pre-amyloid aggregates. Although these oligomers appear to be a pre-amyloid assembly, they are slower than CysC monomers to form fibrils. Fibrillation of CysC therefore likely initiates from the monomer and does not require domain-swapping. The non-swapped oligomers likely represent a dead-end offshoot of the amyloid pathway and must dissociate to monomers prior to rearranging to amyloid fibrils. These prefibrillar CysC oligomers were potent inhibitors of aggregation of the Alzheimer's-related peptide, β-amyloid. This result illustrates an example where heterotypic interactions between pre-amyloid oligomers prevent the homotypic interactions that would lead to mature amyloid fibrils.
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Affiliation(s)
- Tyler J Perlenfein
- From the Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706
| | - Jacob D Mehlhoff
- From the Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706
| | - Regina M Murphy
- From the Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706
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Jurczak P, Groves P, Szymanska A, Rodziewicz-Motowidlo S. Human cystatin C monomer, dimer, oligomer, and amyloid structures are related to health and disease. FEBS Lett 2016; 590:4192-4201. [DOI: 10.1002/1873-3468.12463] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/10/2016] [Accepted: 10/14/2016] [Indexed: 12/17/2022]
Affiliation(s)
| | - Patrick Groves
- Department of Biomedical Chemistry; University of Gdansk; Poland
| | - Aneta Szymanska
- Department of Biomedical Chemistry; University of Gdansk; Poland
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Breydo L, Uversky VN. Structural, morphological, and functional diversity of amyloid oligomers. FEBS Lett 2015; 589:2640-8. [PMID: 26188543 DOI: 10.1016/j.febslet.2015.07.013] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 07/08/2015] [Accepted: 07/11/2015] [Indexed: 12/19/2022]
Abstract
Protein misfolding and aggregation are known to play a crucial role in a number of important human diseases (Alzheimer's, Parkinson's, prion, diabetes, cataracts, etc.) as well as in a multitude of physiological processes. Protein aggregation is a highly complex process resulting in a variety of aggregates with different structures and morphologies. Oligomeric protein aggregates (amyloid oligomers) are formed as both intermediates and final products of the aggregation process. They are believed to play an important role in many protein aggregation-related diseases, and many of them are highly cytotoxic. Due to their instability and structural heterogeneity, information about structure, mechanism of formation, and physiological effects of amyloid oligomers is sparse. This review attempts to summarize the existing information on the major properties of amyloid oligomers.
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Affiliation(s)
- Leonid Breydo
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA.
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; Institute for Biological Instrumentation, Russian Academy of Sciences, Pushchino, Moscow Region, Russian Federation; Department of Biology, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
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