1
|
Zhang Y, Zhang Z, Qu Z. Curvature-mediated source and sink effects on the genesis of premature ventricular complexes in long QT syndrome. Am J Physiol Heart Circ Physiol 2024; 326:H1350-H1365. [PMID: 38551483 DOI: 10.1152/ajpheart.00004.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 05/08/2024]
Abstract
Premature ventricular complexes (PVCs) are spontaneous excitations occurring in the ventricles of the heart that are associated with ventricular arrhythmias and sudden cardiac death. Under long QT conditions, PVCs can be mediated by repolarization gradient (RG) and early afterdepolarizations (EADs), yet the effects of heterogeneities or geometry of the RG or EAD regions on PVC genesis remain incompletely understood. In this study, we use computer simulation to systematically investigate the effects of the curvature of the RG border region on PVC genesis under long QT conditions. We show that PVCs can be either promoted or suppressed by negative or positive RG border curvature depending on the source and sink conditions. When the origin of oscillation is in the source region and the source is too strong, a positive RG border curvature can promote PVCs by causing the source area to oscillate. When the origin of oscillation is in the sink region, a negative RG border curvature can promote PVCs by causing the sink area to oscillate. Furthermore, EAD-mediated PVCs are also promoted by negative border curvature. We also investigate the effects of wavefront curvature and show that PVCs are promoted by convex but suppressed by concave wavefronts; however, the effect of wavefront curvature is much smaller than that of RG border curvature. In conclusion, besides the increase of RG and occurrence of EADs caused by QT prolongation, the geometry of the RG border plays important roles in PVC genesis, which can greatly increase the risk of arrhythmias in cardiac diseases.NEW & NOTEWORTHY The effects of the curvature or geometry of the repolarization gradient region and wavefront curvature on the genesis of premature ventricular complexes are systematically investigated using computer modeling and simulation. Premature ventricular complexes can be promoted by either positive or negative curvature of the gradient region depending on the source and sink conditions. The underlying mechanisms of the curvature effects are revealed, which provides mechanistic insights into arrhythmogenesis in cardiac diseases.
Collapse
Affiliation(s)
- Yuhao Zhang
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, People's Republic of China
| | - Zhaoyang Zhang
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, People's Republic of China
| | - Zhilin Qu
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, United States
| |
Collapse
|
2
|
Shin BG, Oh HM, Bae JJ, Song YJ, Lee YH. Charged Exciton Generation by Curvature-Induced Band Gap Fluctuations in Structurally Disordered Two-Dimensional Semiconductors. ACS Nano 2024; 18:10156-10164. [PMID: 38551612 DOI: 10.1021/acsnano.4c00026] [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] [Indexed: 04/10/2024]
Abstract
Curvature is a general factor for various two-dimensional (2D) materials due to their flexibility, which is not yet fully unveiled to control their physical properties. In particular, the effect of structural disorder with random curvature formation on excitons in 2D semiconductors is not fully understood. Here, the correlation between structural disorder and exciton formation in monolayer MoS2 on SiO2 was investigated by using photoluminescence (PL) and Raman spectroscopy. We found that the curvature-induced charge localization along with band gap fluctuations aid the formation of the localized charged excitons (such as trions). In the substrate-supported region, the trion population is enhanced by a localized charge due to the microscopic random bending strain, while the trion is suppressed in the suspended region which exhibits negligible bending strain, anomalously even though the dielectric screening effect is lower than that of the supported region. The redistribution of each exciton by the bending strain leads to a huge variation (∼100-fold) in PL intensity between the supported and suspended regions, which cannot be fully comprehended by external potential disorders such as a random distribution of charged impurities. The peak position of PL in MoS2/SiO2 is inversely proportional to the Raman peak position of E12g, indicating that the bending strain is correlated with PL. The supported regions exhibit an indirect portion that was not shown in the suspended regions or atomically flat substrates. The understanding of the structural disorder effect on excitons provides a fundamental path for optoelectronics and strain engineering of 2D semiconductors.
Collapse
Affiliation(s)
- Bong Gyu Shin
- Department of Nano Science and Technology, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
| | - Hye Min Oh
- Department of Physics, Kunsan National University, Gunsan, Jeonbuk 54150, Republic of Korea
| | - Jung Jun Bae
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
| | - Young Jae Song
- Department of Nano Science and Technology, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Nano Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Young Hee Lee
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department of Energy Science (DOES), Sungkyunkwan University, Suwon 16419, Republic of Korea
| |
Collapse
|
3
|
Schamberger B, Ehrig S, Dechat T, Spitzer S, Bidan CM, Fratzl P, Dunlop JWC, Roschger A. Twisted-plywood-like tissue formation in vitro. Does curvature do the twist? PNAS Nexus 2024; 3:pgae121. [PMID: 38590971 PMCID: PMC10999733 DOI: 10.1093/pnasnexus/pgae121] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/23/2024] [Indexed: 04/10/2024]
Abstract
Little is known about the contribution of 3D surface geometry to the development of multilayered tissues containing fibrous extracellular matrix components, such as those found in bone. In this study, we elucidate the role of curvature in the formation of chiral, twisted-plywood-like structures. Tissues consisting of murine preosteoblast cells (MC3T3-E1) were grown on 3D scaffolds with constant-mean curvature and negative Gaussian curvature for up to 32 days. Using 3D fluorescence microscopy, the influence of surface curvature on actin stress-fiber alignment and chirality was investigated. To gain mechanistic insights, we did experiments with MC3T3-E1 cells deficient in nuclear A-type lamins or treated with drugs targeting cytoskeleton proteins. We find that wild-type cells form a thick tissue with fibers predominantly aligned along directions of negative curvature, but exhibiting a twist in orientation with respect to older tissues. Fiber orientation is conserved below the tissue surface, thus creating a twisted-plywood-like material. We further show that this alignment pattern strongly depends on the structural components of the cells (A-type lamins, actin, and myosin), showing a role of mechanosensing on tissue organization. Our data indicate the importance of substrate curvature in the formation of 3D tissues and provide insights into the emergence of chirality.
Collapse
Affiliation(s)
- Barbara Schamberger
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020 Salzburg, Austria
| | - Sebastian Ehrig
- Laboratory of Systems Biology of Gene Regulatory Elements, Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Hannoversche Str. 28, 10115 Berlin, Germany
| | - Thomas Dechat
- Ludwig Boltzmann Institute of Osteology of OEGK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, 1140 Vienna, Austria
| | - Silvia Spitzer
- Ludwig Boltzmann Institute of Osteology of OEGK and AUVA Trauma Centre Meidling, 1st Medical Department, Hanusch Hospital, 1140 Vienna, Austria
| | - Cécile M Bidan
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| | - John W C Dunlop
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020 Salzburg, Austria
| | - Andreas Roschger
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020 Salzburg, Austria
| |
Collapse
|
4
|
Bencic M, Bizic M, Joksic I, Stojanovic B, Djordjevic ML. Isolated Male Epispadias Repair: Long-Term Outcomes. Life (Basel) 2024; 14:446. [PMID: 38672717 PMCID: PMC11050961 DOI: 10.3390/life14040446] [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] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
Isolated male epispadias is one of the most severe congenital genital anomalies that require surgical correction. The goals of the surgery are to reach good aesthetic and functional outcomes. The aim of this retrospective study was to analyze the long-term outcomes of surgical reconstruction of male epispadias. A total of 31 patients with a mean age of 17 years, who underwent surgical repair of isolated male epispadias from January 2000 to January 2015, were involved. The main outcome measures were defined as: aesthetic outcome, continence, postoperative complications, sexual function, and quality of life. The follow-up period ranged from 8 to 23 years, with an average of 14.4 years. Each patients underwent an average of 2.2 surgical procedures in this period. The most common postoperative complications were urethral fistula and residual curvature, in 22.6% and 12.9%, respectively. Satisfactory aesthetic outcome was reported in 71.4% of cases. The repair of male epispadias usually includes more than two procedures with satisfactory aesthetic outcome. Unsolved urinary incontinence remains a significant issue and has a high impact on the quality of life. Follow-up should be extended even after complete sexual maturity. Comprehensive long-term evaluation is necessary for proper treatment of isolated epispadias.
Collapse
Affiliation(s)
- Marko Bencic
- Belgrade Center for Genitourinary Reconstructive Surgery, 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Marta Bizic
- Belgrade Center for Genitourinary Reconstructive Surgery, 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Ivana Joksic
- Department of Genetics, Gynecology and Obstetrics Clinic “Narodni Front”, 11000 Belgrade, Serbia
| | - Borko Stojanovic
- Belgrade Center for Genitourinary Reconstructive Surgery, 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Miroslav L. Djordjevic
- Belgrade Center for Genitourinary Reconstructive Surgery, 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| |
Collapse
|
5
|
Huynh T, Cang Z. Topological and geometric analysis of cell states in single-cell transcriptomic data. Brief Bioinform 2024; 25:bbae176. [PMID: 38632952 PMCID: PMC11024518 DOI: 10.1093/bib/bbae176] [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: 09/09/2023] [Revised: 01/29/2024] [Accepted: 03/24/2024] [Indexed: 04/19/2024] Open
Abstract
Single-cell RNA sequencing (scRNA-seq) enables dissecting cellular heterogeneity in tissues, resulting in numerous biological discoveries. Various computational methods have been devised to delineate cell types by clustering scRNA-seq data, where clusters are often annotated using prior knowledge of marker genes. In addition to identifying pure cell types, several methods have been developed to identify cells undergoing state transitions, which often rely on prior clustering results. The present computational approaches predominantly investigate the local and first-order structures of scRNA-seq data using graph representations, while scRNA-seq data frequently display complex high-dimensional structures. Here, we introduce scGeom, a tool that exploits the multiscale and multidimensional structures in scRNA-seq data by analyzing the geometry and topology through curvature and persistent homology of both cell and gene networks. We demonstrate the utility of these structural features to reflect biological properties and functions in several applications, where we show that curvatures and topological signatures of cell and gene networks can help indicate transition cells and the differentiation potential of cells. We also illustrate that structural characteristics can improve the classification of cell types.
Collapse
Affiliation(s)
- Tram Huynh
- Department of Mathematics and Center for Research in Scientific Computation, North Carolina State University, NC 27695, USA
| | - Zixuan Cang
- Department of Mathematics and Center for Research in Scientific Computation, North Carolina State University, NC 27695, USA
| |
Collapse
|
6
|
Jessop AL, Millsteed AJ, Kirkensgaard JJK, Shaw J, Clode PL, Schröder-Turk GE. Composite material in the sea urchin Cidaris rugosa: ordered and disordered micrometre-scale bicontinuous geometries. J R Soc Interface 2024; 21:20230597. [PMID: 38471532 PMCID: PMC10932713 DOI: 10.1098/rsif.2023.0597] [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: 10/13/2023] [Accepted: 02/12/2024] [Indexed: 03/14/2024] Open
Abstract
The sponge-like biomineralized calcite materials found in echinoderm skeletons are of interest in terms of both structure formation and biological function. Despite their crystalline atomic structure, they exhibit curved interfaces that have been related to known triply periodic minimal surfaces. Here, we investigate the endoskeleton of the sea urchin Cidaris rugosa that has long been known to form a microstructure related to the Primitive surface. Using X-ray tomography, we find that the endoskeleton is organized as a composite material consisting of domains of bicontinuous microstructures with different structural properties. We describe, for the first time, the co-occurrence of ordered single Primitive and single Diamond structures and of a disordered structure within a single skeletal plate. We show that these structures can be distinguished by structural properties including solid volume fraction, trabeculae width and, to a lesser extent, interface area and mean curvature. In doing so, we present a robust method that extracts interface areas and curvature integrals from voxelized datasets using the Steiner polynomial for parallel body volumes. We discuss these very large-scale bicontinuous structures in the context of their function, formation and evolution.
Collapse
Affiliation(s)
- Anna-Lee Jessop
- School of Mathematics, Statistics, Chemistry and Physics, Murdoch University, Murdoch, Australia
| | - Allan J. Millsteed
- School of Mathematics, Statistics, Chemistry and Physics, Murdoch University, Murdoch, Australia
| | - Jacob J. K. Kirkensgaard
- Niels Bohr Institute, University of Copenhagen, Kobenhavn, Denmark
- Department of Food Science, University of Copenhagen, Kobenhavn, Denmark
| | - Jeremy Shaw
- Centre for Microscopy, Characterisation, and Analysis, University of Western Australia, Perth, Australia
| | - Peta L. Clode
- Centre for Microscopy, Characterisation, and Analysis, University of Western Australia, Perth, Australia
- School of Biological Sciences, University of Western Australia, Perth, Australia
| | - Gerd E. Schröder-Turk
- School of Mathematics, Statistics, Chemistry and Physics, Murdoch University, Murdoch, Australia
- Research School of Physics, The Australian National University, Canberra, Australia
| |
Collapse
|
7
|
Hübner R. Golden spiral or Fibonacci spiral: Which is more beautiful and why? Iperception 2024; 15:20416695241243319. [PMID: 38600988 PMCID: PMC11005508 DOI: 10.1177/20416695241243319] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 03/15/2024] [Indexed: 04/12/2024] Open
Abstract
Spirals, with their widespread presence in both nature and culture, are universally admired. Although there are different types, such as the Archimedean, logarithmic, and golden spirals, they are indiscriminately considered as beautiful. This universal view might explain the lack of studies investigating aesthetic differences among spirals. To show that there are indeed differences, the beauty of the golden spiral was compared with that of the Fibonacci spiral in this empirical study. Since the curvature of the golden spiral changes continuously, whereas that of the Fibonacci spiral does so in steps, the golden spiral was predicted to be aesthetically preferred. The results clearly confirmed this prediction. That the difference in preference was really based on the continuity versus discontinuity of the curvature is supported by the further result that an Archimedean spiral was preferred over a Dürer spiral, which similarly differed in their continuity.
Collapse
Affiliation(s)
- Ronald Hübner
- Department of Psychology, University of Konstanz, Konstanz, Germany
| |
Collapse
|
8
|
Liu W, Zhang C, Zhang H, Ma S, Deng J, Wang D, Chang Z, Yang J. Molecular basis for curvature formation in SepF polymerization. Proc Natl Acad Sci U S A 2024; 121:e2316922121. [PMID: 38381790 PMCID: PMC10907229 DOI: 10.1073/pnas.2316922121] [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: 10/08/2023] [Accepted: 11/20/2023] [Indexed: 02/23/2024] Open
Abstract
The self-assembly of proteins into curved structures plays an important role in many cellular processes. One good example of this phenomenon is observed in the septum-forming protein (SepF), which forms polymerized structures with uniform curvatures. SepF is essential for regulating the thickness of the septum during bacteria cell division. In Bacillus subtilis, SepF polymerization involves two distinct interfaces, the β-β and α-α interfaces, which define the assembly unit and contact interfaces, respectively. However, the mechanism of curvature formation in this step is not yet fully understood. In this study, we employed solid-state NMR (SSNMR) to compare the structures of cyclic wild-type SepF assemblies with linear assemblies resulting from a mutation of G137 on the β-β interface. Our results demonstrate that while the sequence differences arise from the internal assembly unit, the dramatic changes in the shape of the assemblies depend on the α-α interface between the units. We further provide atomic-level insights into how the angular variation of the α2 helix on the α-α interface affects the curvature of the assemblies, using a combination of SSNMR, cryo-electron microscopy, and simulation methods. Our findings shed light on the shape control of protein assemblies and emphasize the importance of interhelical contacts in retaining curvature.
Collapse
Affiliation(s)
- Wenjing Liu
- National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan430071, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing100049, People’s Republic of China
| | - Chang Zhang
- National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan430071, People’s Republic of China
| | - Huawei Zhang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen518055, People’s Republic of China
- Southern University of Science and Technology, Shenzhen518055, People’s Republic of China
| | - Shaojie Ma
- National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan430071, People’s Republic of China
| | - Jing Deng
- National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan430071, People’s Republic of China
| | - Daping Wang
- Southern University of Science and Technology, Shenzhen518055, People’s Republic of China
- Department of Orthopedics, Shenzhen Intelligent Orthopaedics and Biomedical Innovation Platform, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen518000, People’s Republic of China
| | - Ziwei Chang
- National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan430071, People’s Republic of China
| | - Jun Yang
- National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan430071, People’s Republic of China
- Interdisciplinary Institute of NMR and Molecular Sciences, School of Chemistry and Chemical Engineering, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan430081, People’s Republic of China
| |
Collapse
|
9
|
Hirashima T, Matsuda M. ERK-mediated curvature feedback regulates branching morphogenesis in lung epithelial tissue. Curr Biol 2024; 34:683-696.e6. [PMID: 38228149 DOI: 10.1016/j.cub.2023.12.049] [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: 07/14/2022] [Revised: 11/06/2023] [Accepted: 12/14/2023] [Indexed: 01/18/2024]
Abstract
Intricate branching patterns emerge in internal organs due to the recurrent occurrence of simple deformations in epithelial tissues. During murine lung development, epithelial cells in distal tips of the single tube require fibroblast growth factor (FGF) signals emanating from their surrounding mesenchyme to form repetitive tip bifurcations. However, it remains unknown how the cells employ FGF signaling to convert their behaviors to achieve the recursive branching processes. Here, we show a mechano-chemical regulatory system underlying lung branching morphogenesis, orchestrated by extracellular signal-regulated kinase (ERK) as a downstream driver of FGF signaling. We found that tissue-scale curvature regulated ERK activity in the lung epithelium using two-photon live cell imaging and mechanical perturbations. ERK activation occurs specifically in epithelial tissues exhibiting positive curvature, regardless of whether the change in curvature was attributable to morphogenesis or perturbations. Moreover, ERK activation accelerates actin polymerization preferentially at the apical side of cells, mechanically contributing to the extension of the apical membrane, culminating in a reduction of epithelial tissue curvature. These results indicate the existence of a negative feedback loop between tissue curvature and ERK activity that transcends spatial scales. Our mathematical model confirms that this regulatory mechanism is sufficient to generate the recursive branching processes. Taken together, we propose that ERK orchestrates a curvature feedback loop pivotal to the self-organized patterning of tissues.
Collapse
Affiliation(s)
- Tsuyoshi Hirashima
- Mechanobiology Institute, National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 2 Medical Drive MD9, Singapore 117593, Singapore; The Hakubi Center, Kyoto University, Yoshida-honmachi, Kyoto 606-8501, Japan; Graduate School of Biostudies, Kyoto University, Yoshidakone-cho, Kyoto 606-8501, Japan; Japan Science and Technology Agency, PRESTO, 4-1-8 Honchō, Kawaguchi 332-0012, Japan.
| | - Michiyuki Matsuda
- Graduate School of Biostudies, Kyoto University, Yoshidakone-cho, Kyoto 606-8501, Japan; Graduate School of Medicine, Kyoto University, Yoshidakone-cho, Kyoto 606-8501, Japan; Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida-honmachi, Kyoto 606-8317, Japan
| |
Collapse
|
10
|
Wang Y, Liu F, Zhu X, Liu Y, He JC, Zhou X, Qu X. Effects on radius of curvature and refractive power of the cornea and crystalline lens by atropine 0.01% eye drops. Acta Ophthalmol 2024; 102:e69-e77. [PMID: 37143398 DOI: 10.1111/aos.15679] [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: 11/03/2022] [Revised: 03/02/2023] [Accepted: 04/21/2023] [Indexed: 05/06/2023]
Abstract
PURPOSE The morphological changes in the cornea and crystalline lens have not been closely evaluated after the administration of atropine 0.01%. This study aims to evaluate the radii of curvature and refractive power of the cornea and lens in myopic eyes during atropine 0.01% treatment. METHODS Children aged 6-14 years with myopia <-6.0 D were randomized to receive atropine 0.01% once nightly with single vision lenses or simply wear single vision lenses. Ocular biometric parameters were measured using the IOLMaster 700 biometry and the radii of corneal and lenticular curvature were simulated using a customized program. RESULTS At the 9-month visit, 69 atropine-treated eyes and 50 control eyes were included in the final analyses. In atropine-treated eyes, the posterior corneal surface steepened (-0.05 ± 0.13 mm) and the anterior lenticular surface flattened (0.20 ± 0.69 mm) significantly within 3-6 months, whereas the posterior corneal surface and anterior lenticular surface gradually flattened (0.07 ± 0.23 and 0.32 ± 0.80 mm respectively) in the control eyes over 9 months. The difference in the change of corneal refractive power was significant between groups (-0.03 ± 0.18 D vs. 0.11 ± 0.24 D, p = 0.001), while that in the change of lenticular refractive power was statistically insignificant (0.01 ± 0.92 D vs. -0.22 ± 0.86 D, p = 0.161). CONCLUSIONS The administration of atropine 0.01% exhibited a clinically short and subtle impact on the cornea and lens, which may shed light on new targets of action for atropine in inhibiting myopia.
Collapse
Affiliation(s)
- Yuliang Wang
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Fang Liu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Xingxue Zhu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Yujia Liu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Ji C He
- Department of Vision Science, New England College of Optometry, Boston, Massachusetts, USA
| | - Xingtao Zhou
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Xiaomei Qu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| |
Collapse
|
11
|
Rice PS, Lee G, Schwartz B, Autrey T, Ginovska B. Leveraging Curvature on N-Doped Carbon Materials for Hydrogen Storage. Small 2024:e2310162. [PMID: 38221703 DOI: 10.1002/smll.202310162] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/25/2023] [Indexed: 01/16/2024]
Abstract
Carbon sorbent materials have shown great promise for solid-state hydrogen (H2 ) storage. Modification of these materials with nitrogen (N) dopants has been undertaken to develop materials that can store H2 at ambient temperatures. In this work density functional theory (DFT) calculations are used to systematically probe the influence of curvature on the stability and activity of undoped and N-doped carbon materials toward H binding. Specifically, four models of carbon materials are used: graphene, [5,5] carbon nanotube, [5,5] D5d -C120, and C60 , to extract and correlate the thermodynamic properties of active sites with varying degrees of sp2 hybridization (curvature). From the calculations and analysis, it is found that graphitic N-doping is thermodynamically favored on more pyramidal sites with increased curvature. In contrast, it is found that the hydrogen binding energy is weakly affected by curvature and is dominated by electronic effects induced by N-doping. These findings highlight the importance of modulating the heteroatom doping configuration and the lattice topology when developing materials for H2 storage.
Collapse
Affiliation(s)
- Peter S Rice
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
| | - Gabriel Lee
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
| | - Brayden Schwartz
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
| | - Tom Autrey
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
| | - Bojana Ginovska
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
| |
Collapse
|
12
|
Nan X, Kuru Çolak T, Akçay B, Xie H, Zhao L, Borysov M. Results of Gensingen Bracing in Patients With Adolescent Idiopathic Scoliosis: Retrospective Cross-Sectional Feasibility Study. JMIR Rehabil Assist Technol 2024; 11:e50299. [PMID: 38198197 PMCID: PMC10809064 DOI: 10.2196/50299] [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] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/10/2023] [Accepted: 12/11/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Bracing is an essential part of scoliosis treatment. The standard of brace treatment for patients with scoliosis today is still very variable in terms of brace quality and outcome. The Gensingen brace is a further developed Chêneau brace derivative with individual design, which can be adapted through computer-aided design. OBJECTIVE This study aims to generate a template to obtain a database for prospective multicenter studies study to analyze the results of high-corrective asymmetric Gensingen brace treatment for patients with adolescent idiopathic scoliosis (AIS). METHODS A template for the database was created, which contains the patients' basic data (age, menarcheal status, Risser Sign, curve pattern, and daily brace wearing time), the Cobb angles of curvature, and the cosmetically relevant angles of trunk rotation (ATR). A retrospective review of medical records of patients with AIS, who met the Scoliosis Research Society's inclusion criteria for brace studies, was performed to test the feasibility of the template. Template items were filled in by the researchers. RESULTS Out of 115 patients between 2014 and 2018, the complete data of 33 patients followed up at least 3 months after complete Gensingen brace weaning could be analyzed. The mean age was 12 years, the mean Cobb angle was 33.6°, and the mean Risser value was 0.7 at the beginning of the treatment. The mean improvement in the Cobb angle on in-brace x-ray imaging was -26.1० (80% of in-brace correction). The Cobb angle of the major curvature changed as follows: curve stabilization was achieved in 7 (21.2%) cases, and curve improvement was achieved in 26 (78.8%) cases. None of the patients showed a curve progression. The Cobb angle was significantly reduced in the brace at the end of treatment and at follow-up evaluation (P<.001). ATR improved significantly for thoracic (P<.001) and lumbar curves (P<.001). CONCLUSIONS The database proved to be informative in the assessment of radiological and clinical outcome parameters. The example data set we have generated can be a helpful tool for professionals who work in clinics but do not store regular patient data. Especially with regard to different patient collectives worldwide, different results may be achieved with the same standards of care. In addition, the results of this study suggest that above-average correction effects with a full-time brace application lead to significant improvements in the Cobb angle after brace treatment has been completed.
Collapse
Affiliation(s)
- Xiaofeng Nan
- Nan Xiaofeng's Spinal Orthopedic Workshop, Xi'an Shaanxi, China
| | - Tuğba Kuru Çolak
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Marmara University, İstanbul, Turkey
| | - Burçin Akçay
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Bandırma Onyedi Eylül University, Balıkesir, Turkey
| | - Hua Xie
- Schroth Health Technology, Chongqing, China
| | - Liwei Zhao
- National Research Centre for Rehabilitation Technical Aids, Schroth Health Technology, Beijing, China
| | | |
Collapse
|
13
|
Tian M, Tennyson WD, Yoon M, Puretzky AA, Geohegan DB, Duscher G, Eres G. Role of Curvature in Stabilizing Boron-Doped Nanocorrugated Graphene. ACS Appl Mater Interfaces 2024; 16:1276-1282. [PMID: 38109559 DOI: 10.1021/acsami.3c10664] [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] [Indexed: 12/20/2023]
Abstract
Boron-doped carbon nanostructures have attracted great interest recently because of their remarkable electrocatalytic performance comparable to or better than that of conventional metal catalysts. In a previous work (Carbon 123, 605 (2017)), we reported that along with significant performance improvement, B doping enhances the oxidation resistance of few-layer graphene (FLG) that provides increased structural stability for intermediate-temperature fuel-cell electrodes. In general, detailed characterization of the atomic and electronic structure transformations that occur in B-doped carbon nanostructures during fuel-cell operation is lacking. In this work, we use aberration-corrected scanning transmission electron microscopy, nanobeam electron diffraction, and electron energy-loss spectroscopy (EELS) to characterize the atomic and electronic structures of B-doped FLG before and after fuel-cell operation. These data point to the nanoscale corrugation of B-doped FLGs as the key factor responsible for increased stability and high corrosion resistance. The similarity of the 1s to π* and σ* transition features in the B K-edge EELS to those in B-doped carbon nanotubes provides an estimate for the curvature of nanocorrugation in B-FLG.
Collapse
Affiliation(s)
- Mengkun Tian
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Wesley D Tennyson
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Mina Yoon
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Alexander A Puretzky
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - David B Geohegan
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Gerd Duscher
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Gyula Eres
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| |
Collapse
|
14
|
Ozanne H, Moubri L, Abou-Nassif L, Thoumire O, Echalard A, Morin-Grognet S, Atmani H, Ladam G, Labat B. Active Osteoblasts or Quiescent Bone Lining Cells? Preosteoblasts Fate Orchestrated by Curvature and Stiffness of an In Vitro 2.5D Biomimetic Culture System. Adv Healthc Mater 2024; 13:e2302222. [PMID: 37929897 DOI: 10.1002/adhm.202302222] [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: 07/15/2023] [Indexed: 11/07/2023]
Abstract
Biomimetic cell culture systems are required to provide more physiologically relevant microenvironments for bone cells. Here, a simple 2.5D culture platform is proposed, combining adjustable stiffness and surface features that mimic bone topography by using sandpaper grits as master molds with two stiffness formulations of polydimethylsiloxane (PDMS). The subsequent replicas perfectly conform the grits and reproduce the corresponding negative relief with cavities separated by convex edges. Biomimicry is also provided by an extracellular matrix (ECM)-like thin film coating, using the layer-by-layer (LbL) method. The topographical features, alternating concave, and convex structures drive preosteoblasts organization and morphology. Strikingly, curvature orchestrates the commitment of preosteoblasts, with i) maturation to active osteoblasts able to produce a dense collagenous matrix that ultimately mineralizes in the cavities, and ii) edges hosting quiescent cells that synthetize a very thin immature collagen layer with no mineralization. In summary, the present in vitro culture system model offers a cell-instructive 2.5D microenvironment that controls preosteoblasts fate, leading to two coexisting subpopulations: mature osteoblasts and bone lining cells (BLC). This promising culture system opens new avenues to advanced tissue-engineered modeling and can be applied to precellularized bone biomaterials.
Collapse
Affiliation(s)
- Hélène Ozanne
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | - Loïc Moubri
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | - Léa Abou-Nassif
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | - Olivier Thoumire
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | - Aline Echalard
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | | | - Hassan Atmani
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | - Guy Ladam
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| | - Béatrice Labat
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, PBS UMR 6270, Evreux, F-27000, France
| |
Collapse
|
15
|
Xiao A, Du J, Ling Q, Chen Y, Gu Z, Chen H, Yu Z, Mao BM, Guan Z, Chen D. Angularly Cascaded Long-Period Fiber Grating for Curvature and Temperature Detection. Sensors (Basel) 2023; 24:184. [PMID: 38203045 PMCID: PMC10781333 DOI: 10.3390/s24010184] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/05/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024]
Abstract
A high-sensitivity curvature sensor with dual-parameter measurement ability based on angularly cascaded long-period fiber grating (AC-LPFG) is proposed and experimentally demonstrated, which consists of two titled LPFGs (TLPFGs) with different tilt angles and the same grating period. AC-LPFG was fabricated by using a deep ultraviolet laser and an amplitude-mask in our laboratory. The experimental results show that simultaneous measurement of curvature and temperature can be achieved by monitoring the wavelengths of two resonant peaks for different TLPFGs. The two peaks show opposite shifts with increasing curvature and has a maximum curvature sensitivity of 16.392 nm/m-1. With the advantages of low cost, high sensitivity, and dual-parameter measurements, our sensor has more potential for engineering applications.
Collapse
Affiliation(s)
- Anping Xiao
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China
| | - Jie Du
- Laboratory of Photo-Electric Functional Films, College of Science, University of Shanghai for Science and Technology, 516 Jun Gong Road, Shanghai 200093, China
| | - Qiang Ling
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China
- Futong Group Co., Ltd., Hangzhou 311499, China
- College of Science, Zhejiang University of Technology, Hangzhou 310023, China
| | - Yao Chen
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China
| | - Zhengtian Gu
- Laboratory of Photo-Electric Functional Films, College of Science, University of Shanghai for Science and Technology, 516 Jun Gong Road, Shanghai 200093, China
| | - Haiyun Chen
- Key Laboratory of Optical Information Detection and Display Technology of Zhejiang, Zhejiang Normal University, Jinhua 321004, China
| | - Zhangwei Yu
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China
- Key Laboratory of Optical Information Detection and Display Technology of Zhejiang, Zhejiang Normal University, Jinhua 321004, China
| | | | - Zuguang Guan
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China
- Key Laboratory of Optical Information Detection and Display Technology of Zhejiang, Zhejiang Normal University, Jinhua 321004, China
| | - Daru Chen
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China
- Key Laboratory of Optical Information Detection and Display Technology of Zhejiang, Zhejiang Normal University, Jinhua 321004, China
| |
Collapse
|
16
|
Tzitzimpasis P, Zachiu C, Raaymakers BW, Ries M. SOLID: a novel similarity metric for mono-modal and multi-modal deformable image registration. Phys Med Biol 2023; 69:015020. [PMID: 38048629 DOI: 10.1088/1361-6560/ad120e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/04/2023] [Indexed: 12/06/2023]
Abstract
Medical image registration is an integral part of various clinical applications including image guidance, motion tracking, therapy assessment and diagnosis. We present a robust approach for mono-modal and multi-modal medical image registration. To this end, we propose the novel shape operator based local image distance (SOLID) which estimates the similarity of images by comparing their second-order curvature information. Our similarity metric is rigorously tailored to be suitable for comparing images from different medical imaging modalities or image contrasts. A critical element of our method is the extraction of local features using higher-order shape information, enabling the accurate identification and registration of smaller structures. In order to assess the efficacy of the proposed similarity metric, we have implemented a variational image registration algorithm that relies on the principle of matching the curvature information of the given images. The performance of the proposed algorithm has been evaluated against various alternative state-of-the-art variational registration algorithms. Our experiments involve mono-modal as well as multi-modal and cross-contrast co-registration tasks in a broad variety of anatomical regions. Compared to the evaluated alternative registration methods, the results indicate a very favorable accuracy, precision and robustness of the proposed SOLID method in various highly challenging registration tasks.
Collapse
Affiliation(s)
- Paris Tzitzimpasis
- Department of Radiotherapy, UMC Utrecht, Heidelberglaan 100, 3508 GA, Utrecht, The Netherlands
| | - Cornel Zachiu
- Department of Radiotherapy, UMC Utrecht, Heidelberglaan 100, 3508 GA, Utrecht, The Netherlands
| | - Bas W Raaymakers
- Department of Radiotherapy, UMC Utrecht, Heidelberglaan 100, 3508 GA, Utrecht, The Netherlands
| | - Mario Ries
- Imaging Division, UMC Utrecht, Heidelberglaan 100, 3508 GA, Utrecht, The Netherlands
| |
Collapse
|
17
|
Li X, Wang Y, Wu J, Tong L, Wang S, Li X, Li C, Wang M, Li M, Fan W, Chen X, Chen Q, Wang G, Chen Y. Engineering contact curved interface with high-electronic-state active sites for high-performance potassium-ion batteries. Proc Natl Acad Sci U S A 2023; 120:e2307477120. [PMID: 38134195 PMCID: PMC10756288 DOI: 10.1073/pnas.2307477120] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 10/02/2023] [Indexed: 12/24/2023] Open
Abstract
Potassium-ion batteries (PIBs) have attracted ever-increasing interest due to the abundant potassium resources and low cost, which are considered a sustainable energy storage technology. However, the graphite anodes employed in PIBs suffer from low capacity and sluggish reaction kinetics caused by the large radius of potassium ions. Herein, we report nitrogen-doped, defect-rich hollow carbon nanospheres with contact curved interfaces (CCIs) on carbon nanotubes (CNTs), namely CCI-CNS/CNT, to boost both electron transfer and potassium-ion adsorption. Density functional theory calculations validate that engineering CCIs significantly augments the electronic state near the Fermi level, thus promoting electron transfer. In addition, the CCIs exhibit a pronounced affinity for potassium ions, promoting their adsorption and subsequently benefiting potassium storage. As a result, the rationally designed CCI-CNS/CNT anode shows remarkable cyclic stability and rate capability. This work provides a strategy for enhancing the potassium storage performance of carbonaceous materials through CCI engineering, which can be further extended to other battery systems.
Collapse
Affiliation(s)
- Xuan Li
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Yaxin Wang
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Junxiong Wu
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Lijuan Tong
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Shuling Wang
- Hebei International Joint Research Center for Computational Optical Imaging and Intelligent Sensing, School of Mathematics and Physics Science and Engineering, Hebei University of Engineering, Handan, Hebei056000, China
| | - Xiaoyan Li
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Chuanping Li
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Manxi Wang
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Manxian Li
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Weiwei Fan
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA02139
| | - Xiaochuan Chen
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Qinghua Chen
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| | - Guoxiu Wang
- Center for Clean Energy Technology, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW2007, Australia
| | - Yuming Chen
- College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou, Fujian350000, China
| |
Collapse
|
18
|
Mucci D, Saracco A. Weak elastic energy of irregular curves. Phil Trans R Soc A 2023; 381:20220370. [PMID: 37926207 DOI: 10.1098/rsta.2022.0370] [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: 12/22/2022] [Accepted: 03/24/2023] [Indexed: 11/07/2023]
Abstract
A weak notion of elastic energy for (not necessarily regular) rectifiable curves in any space dimension is proposed. Our [Formula: see text]-energy is defined through a relaxation process, where a suitable [Formula: see text]-rotation of inscribed polygons is adopted. The discrete [Formula: see text]-rotation we choose has a geometric flavour: a polygon is viewed as an approximation to a smooth curve, and hence its discrete curvature is spread out into a smooth density. For any exponent [Formula: see text] greater than 1, the [Formula: see text]-energy is finite if and only if the arc-length parametrization of the curve has a second-order summability with the same growth exponent. In that case, moreover, the energy agrees with the natural extension of the integral of the [Formula: see text]th power of the scalar curvature. Finally, a comparison with other definitions of discrete curvature is provided. This article is part of the theme issue 'Foundational issues, analysis and geometry in continuum mechanics'.
Collapse
Affiliation(s)
- D Mucci
- Dipartimento di Scienze Matematiche, Fisiche ed Informatiche, Università di Parma, Parco Area delle Scienze 53/A, Parma I-43124, Italy
| | - A Saracco
- Dipartimento di Scienze Matematiche, Fisiche ed Informatiche, Università di Parma, Parco Area delle Scienze 53/A, Parma I-43124, Italy
| |
Collapse
|
19
|
Capogrosso P, Pozzi E, Russo GI, Hatzichristodoulou G, Cocci A, Falcone M, Martinez-Salamanca JI, Fernández-Pascual E, Candela L, Schifano N, Dehò F, Salonia A. Patients' attitude with surgery for Peyronie's disease: results from a multicentric European study. J Sex Med 2023; 21:54-58. [PMID: 37973410 DOI: 10.1093/jsxmed/qdad145] [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: 06/27/2023] [Revised: 09/26/2023] [Accepted: 10/01/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Despite the existence of conservative therapies for Peyronie's disease (PD), surgery is commonly utilized for the treatment of bothersome curvatures due to its potential effectiveness, although it carries intrinsic risks and may not universally lead to satisfactory outcomes. AIM To explore the rate and factors influencing patients' willingness to undergo surgery for PD. METHODS Data were prospectively collected in 5 European academic centers between 2016 and 2020. Data included age, time from PD onset, penile pain, curvature degree, difficulty at penetration, hourglass deformity, erectile dysfunction (ED), and previous treatments. All patients were offered conservative treatments, either medications or injections. Tunical shortening or lengthening procedures were offered as an alternative to conservative treatments, when indicated. Penile prosthesis was offered to those with concomitant ED. Patients' attitudes with surgery were recorded. Logistic regression analyses tested the profile of patients who were more likely to be willing to undergo surgery. OUTCOMES Patients' willingness to undergo surgery for PD. RESULTS This study included 343 patients with a median age of 57.3 years (IQR, 49.8-63.6) and a median penile curvature of 40.0° (IQR, 30.0°-65.0°). Overall, 161 (47%) experienced penetration difficulties and 134 (39%) reported ED. Additionally, hourglass deformity and penile shortening were reported by 48 (14%) and 157 (46%), respectively. As for previous treatments, 128 (37%) received tadalafil once daily; 54 (16%) and 44 (13%), intraplaque verapamil and collagenase injections; and 30 (9%), low-intensity shock wave therapy. Significant curvature reduction (≥20°) was observed in 69 (20%) cases. Only 126 (37%) patients were open to surgery for PD when suggested. At logistic regression analysis after adjusting for confounders, younger age (odds ratio [OR], 0.97; 95% CI, 0.95-1.00; P = .02), more severe curvatures (OR, 1.04; 95% CI, 1.03-1.06; P < .0001), and difficulty in penetration (OR, 1.88; 95% CI, 1.04-3.41; P = .03) were associated with a greater attitude to consider surgical treatment. CLINICAL IMPLICATIONS The need for effective nonsurgical treatments for PD is crucial, as is comprehensive patient counseling regarding surgical risks and benefits, particularly to younger males with severe curvatures. STRENGTHS AND LIMITATIONS Main limitations are the cross-sectional design and the potential neglect of confounding factors. CONCLUSIONS Patients with PD, having a lower inclination toward surgery, emphasize the need for effective nonsurgical alternatives and accurate counseling on the risks and benefits of PD surgery, particularly for younger men with severe curvatures.
Collapse
Affiliation(s)
- Paolo Capogrosso
- Department of Urology, Circolo & Fondazione Macchi Hospital-ASST Sette Laghi, Varese 28001, Italy
| | - Edoardo Pozzi
- Vita-Salute San Raffaele University, Milan 20151, Italy
- Division of Experimental Oncology, Unit of Urology, URI, IRCCS Ospedale San Raffaele, Milan 20151, Italy
| | - Giorgio I Russo
- Urology Section, Department of Surgery, University of Catania, Catania 95100, Italy
| | | | - Andrea Cocci
- Department of Urology, University of Florence, Careggi Hospital, Florence 50100, Italy
| | - Marco Falcone
- Division of Urology, Department of Surgical Sciences, Molinette Hospital, University of Turin, Turin 10024, Italy
| | | | | | - Luigi Candela
- Vita-Salute San Raffaele University, Milan 20151, Italy
- Division of Experimental Oncology, Unit of Urology, URI, IRCCS Ospedale San Raffaele, Milan 20151, Italy
| | - Nicolò Schifano
- Department of Urology, Circolo & Fondazione Macchi Hospital-ASST Sette Laghi, Varese 28001, Italy
| | - Federico Dehò
- Department of Urology, Circolo & Fondazione Macchi Hospital-ASST Sette Laghi, Varese 28001, Italy
| | - Andrea Salonia
- Vita-Salute San Raffaele University, Milan 20151, Italy
- Division of Experimental Oncology, Unit of Urology, URI, IRCCS Ospedale San Raffaele, Milan 20151, Italy
| |
Collapse
|
20
|
Almsaoud NA, Safar O, Alshahrani ST, Alwadai R, Alkhaldi SM, Almurayyi M, Alrweili HH, Assiri HM, Al Jubran A, Hakami B, Alzahrani MA. The effect of penile traction device in men with Peyronie's disease on penile curvature, penile length, and erectile dysfunction: a systematic review and meta-analysis. Transl Androl Urol 2023; 12:1673-1685. [PMID: 38106680 PMCID: PMC10719764 DOI: 10.21037/tau-23-310] [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: 05/27/2023] [Accepted: 10/20/2023] [Indexed: 12/19/2023] Open
Abstract
Background Peyronie's disease (PD) results in curvature, pain, and erectile dysfunction (ED). Penile traction devices (PTDs) are a non-invasive treatment option for PD by applying mechanical forces to elicit biochemical responses that reduce curvature and improve penile function. In the present study, we systematically reviewed and analyzed the literature investigating the use of PTD to treat PD. Methods We have conducted electronic and manual search strategies within the databases and included articles to find relevant studies. A total of Five studies met all the predefined inclusion criteria and were selected for inclusion in the review. Outcomes assessed are penile length, penile curvature, and erectile function (EF). The study population consisted of patients with PD, the intervention was penile traction therapy (PTT), the comparison was matched placebo or follow-up, and the study design was randomized controlled trials (RCTs) or cohort studies. The Cochrane risk of bias assessed the studies' quality for randomized studies and the Newcastle-Ottawa scale (NOS) for non-randomized observational studies. All statistical analyses were performed using R software. Results were considered statistically significant for P<0.05. Results Only five studies met inclusion and exclusion criteria and were published between 2014 and 2021. The sample sizes range [51-110], totaling 419, with a mean of 83.8 patients-the follow-up with a mean of 6.75 months. This meta-analysis evaluated the efficacy of PTD on curvature degree, penile length, and EF in patients. There is a significant positive effect on the curvature degree (P=0.0373), while there is no significant effect on penile length and EF (P=0.5315 and 0.1010), respectively. They are Indicating low heterogeneity with an estimated total heterogeneity of 0. Overall, the available evidence does not support the efficacy of the intervention for penile length or EF. Conclusions The current evidence suggests that PTDs can be a safe and effective treatment option for men with PD to reduce penile curvature. However, further research, including more RCTs with extended follow-up periods, is needed to fully understand their efficacy and determine the ideal timing and patient subtypes that would benefit from PTD.
Collapse
Affiliation(s)
- Nazal A. Almsaoud
- Urology Department, Prince Mutaib Bin Abdulaziz Hospital, Sakaka, Al-Jouf Region, Saudi Arabia
| | - Omar Safar
- Urology Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia
| | | | - Raed Alwadai
- Urology Department, King Abdullah Hospital, Bishah, Assir, Saudi Arabia
| | - Sulaiman M. Alkhaldi
- Urology Department, Prince Mutaib Bin Abdulaziz Hospital, Sakaka, Al-Jouf Region, Saudi Arabia
| | - Muath Almurayyi
- Urology Department, King Khaled University Medical city-Abha, Assir, Saudi Arabia
| | - Hana Hazi Alrweili
- Urology Department, Prince Mutaib Bin Abdulaziz Hospital, Sakaka, Al-Jouf Region, Saudi Arabia
| | - Hassan M. Assiri
- Urology Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia
| | - Abdulkareem Al Jubran
- Urology Department, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudi Arabia
| | - Basel Hakami
- Urology Department, King Faisal Medical City for Southern Region (KFMCity), Abha, Saudi Arabia
- Urology Department, King Fahad Central Hospital, Jazan, Saudi Arabia
| | - Meshari A. Alzahrani
- Urology Department, College of Medicine, Majmaah University, Al-Majmaah, Saudi Arabia
| |
Collapse
|
21
|
Bittencourt GHR, Carvalho-Santos VL, Altbir D, Chubykalo-Fesenko O, Moreno R. Tuning domain wall oscillation frequency in bent nanowires through a mechanical analogy. Nanotechnology 2023; 35:065709. [PMID: 38009501 DOI: 10.1088/1361-6528/ad0a4b] [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: 06/19/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023]
Abstract
In this work, we present a theoretical model for domain wall (DW) oscillations in a curved magnetic nanowire with a constant curvature under the action of a uniaxial magnetic field. Our results show that the DW dynamics can be described as that of the mechanical pendulum, and both the NW curvature and the external magnetic field influence its oscillatory frequency. A comparison between our theoretical approach and experimental data in the literature shows an excellent agreement. The results presented here can be used to design devices demanding the proper control of the DW oscillatory motion in NWs.
Collapse
Affiliation(s)
- G H R Bittencourt
- Departamento de Física, Universidade Federal de Viçosa, Av. PH Rolfs s/n, 36570-900, Viçosa, Brazil
| | - V L Carvalho-Santos
- Departamento de Física, Universidade Federal de Viçosa, Av. PH Rolfs s/n, 36570-900, Viçosa, Brazil
| | - D Altbir
- Universidad de Santiago de Chile, CEDENNA, 9170124, Santiago, Chile
- Universidad Diego Portales, Ejército 441, Santiago, Chile
| | - O Chubykalo-Fesenko
- Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, E-28049 Madrid, Spain
| | - R Moreno
- Instituto de Física Enrique Gaviola, IFEG (UNC-CONICET), Medina Allende s/n, Ciudad Universitaria, 5000 Córdoba, Argentina
| |
Collapse
|
22
|
Nelson BR, Kirkpatrick BE, Skillin NP, Di Caprio N, Lee JS, Hibbard LP, Hach GK, Khang A, White TJ, Burdick JA, Bowman CN, Anseth KS. Facile Physicochemical Reprogramming of PEG-Dithiolane Microgels. Adv Healthc Mater 2023:e2302925. [PMID: 37984810 DOI: 10.1002/adhm.202302925] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/06/2023] [Indexed: 11/22/2023]
Abstract
Granular biomaterials have found widespread applications in tissue engineering, in part because of their inherent porosity, tunable properties, injectability, and 3D printability. However, the assembly of granular hydrogels typically relies on spherical microparticles and more complex particle geometries have been limited in scope, often requiring templating of individual microgels by microfluidics or in-mold polymerization. Here, we use dithiolane-functionalized synthetic macromolecules to fabricate photopolymerized microgels via batch emulsion, and then harness the dynamic disulfide crosslinks to rearrange the network. Through unconfined compression between parallel plates in the presence of photoinitiated radicals, we transform the isotropic microgels are transformed into disks. Characterizing this process, we find that the areas of the microgel surface in contact with the compressive plates are flattened while the curvature of the uncompressed microgel boundaries increases. When cultured with C2C12 myoblasts, cells localize to regions of higher curvature on the disk-shaped microgel surfaces. This altered localization affects cell-driven construction of large supraparticle scaffold assemblies, with spherical particles assembling without specific junction structure while disk microgels assemble preferentially on their curved surfaces. These results represent a unique spatiotemporal process for rapid reprocessing of microgels into anisotropic shapes, providing new opportunities to study shape-driven mechanobiological cues during and after granular hydrogel assembly.
Collapse
Affiliation(s)
- Benjamin R Nelson
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Bruce E Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Nathaniel P Skillin
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Nikolas Di Caprio
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Joshua S Lee
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Lea Pearl Hibbard
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Grace K Hach
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Alex Khang
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Timothy J White
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Jason A Burdick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Christopher N Bowman
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, 80303, USA
| |
Collapse
|
23
|
Liu Y, Morozovska AN, Ghosh A, Kelley KP, Eliseev EA, Yao J, Liu Y, Kalinin S. Stress and Curvature Effects in Layered 2D Ferroelectric CuInP 2S 6. ACS Nano 2023; 17:22004-22014. [PMID: 37917122 DOI: 10.1021/acsnano.3c08603] [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] [Indexed: 11/03/2023]
Abstract
Nanoscale ferroelectric 2D materials offer the opportunity to investigate curvature and strain effects on materials functionalities. Among these, CuInP2S6 (CIPS) has attracted tremendous research interest in recent years due to combination of room temperature ferroelectricity, scalability to a few layers thickness, and ferrielectric properties due to coexistence of 2 polar sublattices. Here, we explore the local curvature and strain effect on polarization in CIPS via piezoresponse force microscopy and spectroscopy. To explain the observed behaviors and decouple the curvature and strain effects in 2D CIPS, we introduce the finite element Landau-Ginzburg-Devonshire model, revealing strong changes in hysteresis characteristics in regions subjected to tensile and compressive strain. The piezoresponse force microscopy (PFM) results show that bending induces ferrielectric domains in CIPS, and the polarization-voltage hysteresis loops differ in bending and nonbending regions. These studies offer insights into the fabrication of curvature-engineered nanoelectronic devices.
Collapse
Affiliation(s)
- Yongtao Liu
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Anna N Morozovska
- Institute of Physics, National Academy of Sciences of Ukraine, 46, pr. Nauky, 03028 Kyiv, Ukraine
| | - Ayana Ghosh
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Kyle P Kelley
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Eugene A Eliseev
- Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3, Krjijanovskogo, 03142 Kyiv, Ukraine
| | - Jinyuan Yao
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ying Liu
- Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Sergei Kalinin
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
24
|
Wang Y, Liu Y, Zhu X, Zhou X, He JC, Qu X. Corneal and lenticular biometry in Chinese children with myopia. Clin Exp Optom 2023; 106:836-844. [PMID: 36045001 DOI: 10.1080/08164622.2022.2116269] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 08/15/2022] [Indexed: 10/14/2022] Open
Abstract
CLINICAL RELEVANCE The measurement and simulation of corneal and lenticular curvature radii using a single swept-source biometry device enables a more thorough evaluation of the shape and refractive power of the cornea and lens during emmetropization or myopia progression in children. BACKGROUND This study aimed to evaluate the distribution characteristics of corneal and lenticular parameters in Chinese children with myopia and explored their association with other ocular components. METHODS In this cross-sectional study, all ocular biometric parameters were measured using a Zeiss IOLMaster 700 Biometry. Simulations of the corneal and lenticular curvature radii were implemented using a customised MATLAB program based on cross-sectional swept-source optical coherence tomography images obtained from the same device. The associations of the calculated and simulated refractive powers of the cornea and lens with other ocular parameters were evaluated. RESULTS In total, 119 children with myopia were recruited. Boys had a deeper anterior chamber and longer axial length (AL) than girls, while girls had steeper anterior corneal and lenticular curvatures and greater corneal and lenticular power. Children aged 10 years and older showed a larger anterior lenticular radius of curvature (sRal) and less lenticular power (PL,OCT) than younger participants. There was a significant positive correlation between AL and the anterior corneal radius of curvature, regardless of sex or age. The sRal exhibited a significant increasing trend, and PL,OCT exhibited a declining trend with a longer AL only in children younger than 10 years. CONCLUSION AL is the most influential factor in the determination of spherical equivalent refractive error, while decreases in both corneal and crystalline lens power are significantly inversely correlated with axial elongation.
Collapse
Affiliation(s)
- Yuliang Wang
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Yujia Liu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Xingxue Zhu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Xingtao Zhou
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| | - Ji C He
- Department of Vision Sciences, New England College of Optometry, Boston, MA, USA
| | - Xiaomei Qu
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai, China
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China
| |
Collapse
|
25
|
Czerpak CA, Ling YTT, Jefferys JL, Quigley HA, Nguyen TD. The Curvature, Collagen Network Structure, and Their Relationship to the Pressure-Induced Strain Response of the Human Lamina Cribrosa in Normal and Glaucoma Eyes. J Biomech Eng 2023; 145:101005. [PMID: 37382629 PMCID: PMC10405282 DOI: 10.1115/1.4062846] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 06/30/2023]
Abstract
The lamina cribrosa (LC) is a connective tissue in the optic nerve head (ONH). The objective of this study was to measure the curvature and collagen microstructure of the human LC, compare the effects of glaucoma and glaucoma optic nerve damage, and investigate the relationship between the structure and pressure-induced strain response of the LC in glaucoma eyes. Previously, the posterior scleral cups of 10 normal eyes and 16 diagnosed glaucoma eyes were subjected to inflation testing with second harmonic generation (SHG) imaging of the LC and digital volume correlation (DVC) to calculate the strain field. In this study, we applied a custom microstructural analysis algorithm to the maximum intensity projection of SHG images to measure features of the LC beam and pore network. We also estimated the LC curvatures from the anterior surface of the DVC-correlated LC volume. Results showed that the LC in glaucoma eyes had larger curvatures p≤0.03), a smaller average pore area (p = 0.001), greater beam tortuosity (p < 0.0001), and more isotropic beam structure (p = 0.01) than in normal eyes. The difference measured between glaucoma and normal eyes may indicate remodeling of the LC with glaucoma or baseline differences that contribute to the development of glaucomatous axonal damage.
Collapse
Affiliation(s)
- Cameron A Czerpak
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218
| | - Yik Tung Tracy Ling
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218
| | - Joan L Jefferys
- Wilmer Ophthalmological Institute, School of Medicine, The Johns Hopkins University, Baltimore, MD 21287
| | - Harry A Quigley
- Wilmer Ophthalmological Institute, School of Medicine, The Johns Hopkins University, Baltimore, MD 21287
| | - Thao D Nguyen
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218; Wilmer Ophthalmological Institute, School of Medicine, The Johns Hopkins University, Baltimore, MD 21287
| |
Collapse
|
26
|
Rodríguez-Lorenzo JL, Martín-Gómez JJ, Juan A, Tocino Á, Cervantes E. Quantitative Analysis of Seed Surface Tubercles in Silene Species. Plants (Basel) 2023; 12:3444. [PMID: 37836184 PMCID: PMC10574879 DOI: 10.3390/plants12193444] [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: 08/21/2023] [Revised: 09/14/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023]
Abstract
In the Caryophyllaceae, seed surfaces contain cell protrusions, of varying sizes and shapes, called tubercles. Tubercles have long been described in many species, but quantitative analyses with measurements of size and shape are lacking in the literature. Based on optical photography, the seeds of Silene were classified into four types: smooth, rugose, echinate and papillose. Seeds in each of these groups have characteristic geometrical properties: smooth seeds lack tubercles and have the highest values of circularity and solidity in their lateral views, while papillose seeds have the largest tubercles and lowest values of circularity and solidity both in lateral and dorsal views. Here, tubercle width, height and slope, maximum and mean curvature values and maximum to mean curvature ratio were obtained for representative seeds of a total of 31 species, 12 belonging to Silene subg. Behenantha and 19 to S. subg. Silene. The seeds of the rugose type had lower values of curvature. Additionally, lower values of curvature were found in species of S. subg. Silene in comparison with S. subg. Behenantha. The seeds of S. subg. Behenantha had higher values of tubercle height and slope and higher values of maximum and average curvature and maximum to mean curvature ratio.
Collapse
Affiliation(s)
- José Luis Rodríguez-Lorenzo
- Plant Developmental Genetics, Institute of Biophysics v.v.i, Academy of Sciences of the Czech Republic, Královopolská 135, 612 65 Brno, Czech Republic;
| | - José Javier Martín-Gómez
- Instituto de Recursos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, Cordel de Merinas 40, 37008 Salamanca, Spain;
| | - Ana Juan
- Departamento de Ciencias Ambientales y Recursos Naturales, Universidad de Alicante, 03690 Alicante, Spain;
| | - Ángel Tocino
- Departamento de Matemáticas, Facultad de Ciencias, Universidad de Salamanca, Plaza de la Merced 1-4, 37008 Salamanca, Spain;
| | - Emilio Cervantes
- Instituto de Recursos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, Cordel de Merinas 40, 37008 Salamanca, Spain;
| |
Collapse
|
27
|
Dougill G, Brassey CA, Starostin EL, Andrews H, Kitchener A, van der Heijden GHM, Goss VGA, Grant RA. Describing whisker morphology of the Carnivora. J Morphol 2023; 284:e21628. [PMID: 37585221 DOI: 10.1002/jmor.21628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/18/2023] [Accepted: 07/24/2023] [Indexed: 08/17/2023]
Abstract
One of the largest ecological transitions in carnivoran evolution was the shift from terrestrial to aquatic lifestyles, which has driven morphological diversity in skulls and other skeletal structures. In this paper, we investigate the association between those lifestyles and whisker morphology. However, comparing whisker morphology over a range of species is challenging since the number of whiskers and their positions on the mystacial pads vary between species. Also, each whisker will be at a different stage of growth and may have incurred damage due to wear and tear. Identifying a way to easily capture whisker morphology in a small number of whisker samples would be beneficial. Here, we describe individual and species variation in whisker morphology from two-dimensional scans in red fox, European otter and grey seal. A comparison of long, caudal whiskers shows inter-species differences most clearly. We go on to describe global whisker shape in 24 species of carnivorans, using linear approximations of curvature and taper, as well as traditional morphometric methods. We also qualitatively examine surface texture, or the presence of scales, using scanning electron micrographs. We show that gross whisker shape is highly conserved, with whisker curvature and taper obeying simple linear relationships with length. However, measures of whisker base radius, length, and maybe even curvature, can vary between species and substrate preferences. Specifically, the aquatic species in our sample have thicker, shorter whiskers that are smoother, with less scales present than those of terrestrial species. We suggest that these thicker whiskers may be stiffer and able to maintain their shape and position during underwater sensing, but being stiffer may also increase wear.
Collapse
Affiliation(s)
- Gary Dougill
- Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| | - Charlotte A Brassey
- Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| | - Eugene L Starostin
- School of Engineering, London South Bank University, London, UK
- Department of Civil, Environmental and Geomatic Engineering, University College London, London, UK
| | - Hayley Andrews
- Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| | - Andrew Kitchener
- Department of Natural Sciences, National Museums Scotland, Edinburgh, UK
| | - Gert H M van der Heijden
- Department of Civil, Environmental and Geomatic Engineering, University College London, London, UK
| | - Victor G A Goss
- School of Engineering, London South Bank University, London, UK
| | - Robyn A Grant
- Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, UK
| |
Collapse
|
28
|
Park S, On SY, Kim J, Lee J, Kim TS, Wardle BL, Kim SS. Reducing Bonding Temperature and Energy Consumption in Electronic Packaging Using Flash Electro-Thermal Carbon Fiber Heating Elements. ACS Appl Mater Interfaces 2023; 15:38750-38758. [PMID: 37535803 PMCID: PMC10436241 DOI: 10.1021/acsami.3c06145] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/16/2023] [Indexed: 08/05/2023]
Abstract
Semiconductor packaging based on an epoxy molding compound (EMC) currently has several disadvantages including warpage, limited processing area, and variability that all negatively affect cost and production yield. We propose a facile EMC molding process method using a flash electro-thermal carbon fiber heating (FE-CH) device based on carbon fiber-based papers to manufacture an EMC molded to a copper substrate (EMC/Cu bi-layer package) via Joule heating, and using this device, a modified cure cycle that combines the conventional cure cycle (CCC) with rapid cooling was performed using FE-CH to reduce the curvature of the EMC/Cu bi-layer package. Compared to the conventional hot press process, which uses 3.17 MW of power, the FE-CH process only uses 32.87 kW, resulting in a power consumption reduction of over 100 times when following the CCC. Furthermore, the FE-CH-cured EMC/Cu bi-layer package exhibits mechanical properties equivalent to those of a hot press-cured specimen, including the degree of cure, elastic modulus, curvature, bonding temperature, residual strain, and peel strength. The modified cure cycle using the FE-CH results in a 31% reduction in residual strain, a 32% reduction in curvature, and a 47% increase in peel strength compared to the CCC, indicating that this new process method is very promising for reducing a semiconductor package's price by reducing the process cost and warpage.
Collapse
Affiliation(s)
- Seong
Yeon Park
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Seung Yoon On
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Junmo Kim
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Jeonyoon Lee
- Department
of Aerospace Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Taek-Soo Kim
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Brian L. Wardle
- Department
of Aeronautics and Astronautics, Massachusetts
Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department
of Mechanical Engineering, Massachusetts
Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Seong Su Kim
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| |
Collapse
|
29
|
Shang Q, Liu F. Reconfiguration Error Correction Model for an FBG Shape Sensor Based on the Sparrow Search Algorithm. Sensors (Basel) 2023; 23:7052. [PMID: 37631588 PMCID: PMC10459899 DOI: 10.3390/s23167052] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/01/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023]
Abstract
A reconfiguration error correction model for an FBG shape sensor (FSS) is proposed. The model includes curvature, bending direction error correction, and the self-correction of the FBG placement angle and calibration error based on an improved sparrow search algorithm (SSA). SSA could automatically correct the placement angle and calibration direction of the FBG, and then use the corrected placement angle and calibration direction to correct the curvature and bending direction of the FSS, thereby improving the accuracy of shape reconfiguration. After error correction, the tail point reconfiguration errors of different shapes were reduced from 2.56% and 4.96% to 1.12% and 2.45%, respectively. This paper provides a new reconfiguration error correction method for FSS that does not require a complicated experimental calibration process, is simpler, more efficient, and more operable than traditional methods, and has great potential in FSS application scenarios.
Collapse
Affiliation(s)
- Qiufeng Shang
- Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, China;
- Hebei Key Laboratory of Power Internet of Things Technology, Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, China
- Baoding Key Laboratory of Optical Fiber Sensing and Optical Communication Technology, Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, China
| | - Feng Liu
- Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, China;
| |
Collapse
|
30
|
Cervantes E, Rodríguez-Lorenzo JL, Martín-Gómez JJ, Tocino Á. Curvature Analysis of Seed Silhouettes in Silene L. Plants (Basel) 2023; 12:2439. [PMID: 37447000 DOI: 10.3390/plants12132439] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/13/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023]
Abstract
The application of seed morphology to descriptive systematics requires methods for shape analysis and quantification. The complexity of lateral and dorsal views of seeds of Silene species is investigated here by the application of the Elliptic Fourier Transform (EFT) to representative seeds of four morphological types: smooth, rugose, echinate and papillose. The silhouettes of seed images in the lateral and dorsal views are converted to trigonometric functions, whose graphical representations reproduce them with different levels of accuracy depending on the number of harmonics. A general definition of seed shape in Silene species is obtained by equations based on 40 points and 20 harmonics, while the detailed representation of individual tubercles in each seed image requires between 100 and 200 points and 60-80 harmonics depending on their number and complexity. Smooth-type seeds are accurately represented with a low number of harmonics, while rugose, echinate and papillose seeds require a higher number. Fourier equations provide information about tubercle number and distribution and allow the analysis of curvature. Further estimation of curvature values in individual tubercles reveals differences between seeds, with higher values of curvature in S. latifolia, representative of echinate seeds, and lower in S. chlorifolia with rugose seeds.
Collapse
Affiliation(s)
- Emilio Cervantes
- Instituto de Recursos Naturales y Agrobiología (Consejo Superior de Investigaciones Científicas), Cordel de Merinas 40, 37008 Salamanca, Spain
| | - José Luis Rodríguez-Lorenzo
- Plant Developmental Genetics, Institute of Biophysics v.v.i, Academy of Sciences of the Czech Republic, Královopolská 135, 612 65 Brno, Czech Republic
| | - José Javier Martín-Gómez
- Instituto de Recursos Naturales y Agrobiología (Consejo Superior de Investigaciones Científicas), Cordel de Merinas 40, 37008 Salamanca, Spain
| | - Ángel Tocino
- Departamento de Matemáticas, Facultad de Ciencias, Universidad de Salamanca, Plaza de la Merced 1-4, 37008 Salamanca, Spain
| |
Collapse
|
31
|
Lee W, Ng B, Mangala MM, Perry MD, Subbiah RN, Vandenberg JI, Hill AP. Action Potential Morphology Accurately Predicts Proarrhythmic Risk for Drugs With Potential to Prolong Cardiac Repolarization. Circ Arrhythm Electrophysiol 2023:e011574. [PMID: 37334695 DOI: 10.1161/circep.122.011574] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
BACKGROUND Drug-induced or acquired long QT syndrome occurs as a result of the unintended disruption of cardiac repolarization due to drugs that block cardiac ion channels. These side effects have been responsible for the withdrawal of a range of drugs from market and are a common reason for termination of the development of new drugs in the preclinical stage. Existing approaches to risk prediction are expensive and overly sensitive meaning that recently there have been renewed efforts, largely driven by the comprehensive proarrhythmic assay initiative, to develop more accurate methods for allocation of proarrhythmic risk. METHODS In this study, we aimed to quantify changes in the morphology of the repolarization phase of the cardiac action potential as an indicator of proarrhythmia, supposing that these shape changes might precede the emergence of ectopic depolarizations that trigger arrhythmia. To do this, we describe a new method of quantifying action potential morphology by measuring the radius of curvature of the repolarization phase both in simulated action potentials, as well as in action potentials measured from induced pluripotent stem cell-derived cardiomyocytes. Features derived from the curvature signal were used as inputs for logistic regressions to predict proarrhythmic risk. RESULTS Optimal risk classifiers based on morphology were able to correctly classify risk to drugs in the comprehensive proarrhythmic assay initiative panels with very high accuracy (0.9375) and outperformed conventional metrics based on action potential duration at 90% repolarization, triangulation, and charge movement (qNet). CONCLUSIONS Analysis of action potential morphology in response to proarrhythmic drugs improves prediction of torsadogenic risk. Furthermore, morphology metrics can be measured directly from the action potential, potentially eliminating the burden of undertaking complex screens of potency and drug-binding kinetics against multiple cardiac ion channels. As such, this method has the potential to improve and streamline regulatory assessment of proarrhythmia in preclinical drug development.
Collapse
Affiliation(s)
- William Lee
- School of Clinical Medicine, Faculty of Medicine and Health (W.L., B.N., M.M.M., R.N.S., J.I.V., A.P.H.)
| | - Ben Ng
- Victor Chang Cardiac Research Institute, Darlinghurst (B.N., M.M.M., M.D.P., R.N.S., J.I.V., A.P.H.)
- School of Clinical Medicine, Faculty of Medicine and Health (W.L., B.N., M.M.M., R.N.S., J.I.V., A.P.H.)
| | - Melissa M Mangala
- Victor Chang Cardiac Research Institute, Darlinghurst (B.N., M.M.M., M.D.P., R.N.S., J.I.V., A.P.H.)
- School of Clinical Medicine, Faculty of Medicine and Health (W.L., B.N., M.M.M., R.N.S., J.I.V., A.P.H.)
| | - Matthew D Perry
- Victor Chang Cardiac Research Institute, Darlinghurst (B.N., M.M.M., M.D.P., R.N.S., J.I.V., A.P.H.)
- Department of Pharmacology, School of Medical Sciences, The University of New South Wales, Sydney, Australia (M.D.P.)
| | - Rajesh N Subbiah
- Victor Chang Cardiac Research Institute, Darlinghurst (B.N., M.M.M., M.D.P., R.N.S., J.I.V., A.P.H.)
- School of Clinical Medicine, Faculty of Medicine and Health (W.L., B.N., M.M.M., R.N.S., J.I.V., A.P.H.)
| | - Jamie I Vandenberg
- Victor Chang Cardiac Research Institute, Darlinghurst (B.N., M.M.M., M.D.P., R.N.S., J.I.V., A.P.H.)
- School of Clinical Medicine, Faculty of Medicine and Health (W.L., B.N., M.M.M., R.N.S., J.I.V., A.P.H.)
| | - Adam P Hill
- Victor Chang Cardiac Research Institute, Darlinghurst (B.N., M.M.M., M.D.P., R.N.S., J.I.V., A.P.H.)
- School of Clinical Medicine, Faculty of Medicine and Health (W.L., B.N., M.M.M., R.N.S., J.I.V., A.P.H.)
| |
Collapse
|
32
|
Henry AJ, Holler JT, Lui J, Breyer BN, Ziegelmann M, Cohen T, Smith RP, Yeaman C, Winkelman AJ, Villanueva C, Kern NG. Do patients with Peyronie's disease perceive penile curvature in adults and children differently than the general population? J Sex Med 2023:7188837. [PMID: 37279444 DOI: 10.1093/jsxmed/qdad073] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/03/2023] [Accepted: 05/05/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND As perception of penile curvature varies widely, we sought to understand how adults perceive curvature and how these opinions compare with those of patients with curvature, specifically Peyronie's disease (PD). AIM To investigate the perspectives of curvature correction from adults with and without PD, as well as differences within demographics. METHODS A cross-sectional survey was administered to adult patients and nonpatient companions in general urology clinics at 3 institutions across the United States. Men, women, and nonbinary participants were recruited. Patients were grouped as having PD vs andrology conditions without PD vs general urology conditions plus companions. The survey consisted of unlabeled 2-dimensional images of penis models with varying degrees of curvature. Participants selected images that they would want surgically corrected for themselves and their children. Univariable and multivariable analyses were performed to identify demographic variables associated with willingness to correct. OUTCOMES Our main outcome was to detect differences in threshold to correct curvature between those with and without PD. RESULTS Participants were grouped as follows: PD (n = 141), andrology (n = 132), and general (n = 302) . Respectively, 12.8%, 18.9%, and 19.9% chose not to surgically correct any degree of curvature (P = .17). For those who chose surgical correction, the mean threshold for correction was 49.7°, 51.0°, and 51.0° (P = .48); for their children, the decision not to correct any degree of curvature was 21.3%, 25.4%, and 29.3% (P = .34), which was significantly higher than correction for themselves (P < .001). The mean threshold for their children's correction was 47.7°, 53.3°, and 49.4° for the PD, andrology, and general groups (P = .53), with thresholds no different vs themselves (P = .93). On multivariable analysis, no differences were seen in demographics within the PD and andrology groups. In the general group, participants aged 45 to 54 years and those who identified as LGBTQ (lesbian, gay, bisexual, transgender, queer) had a higher threshold for correction as compared with their counterparts when factoring other demographic variables (63.2° vs 48.8°, P = .001; 62.1° vs 50.4°, P = .05). CLINICAL IMPLICATIONS With changing times and viewpoints, this study stresses the importance of shared decision making and balancing risks and benefits to correction of penile curvature. STRENGTHS AND LIMITATIONS Strengths include the broad population surveyed. Limitations include the use of artificial models. CONCLUSION No significant differences were seen in the decision to surgically correct curvature between participants with and without PD, with participants being less likely to choose surgical correction for their children.
Collapse
Affiliation(s)
- Alexander J Henry
- Department of Urology, University of Virginia, Charlottesville, VA, 22908, United States
| | - Jordan T Holler
- Department of Urology and Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, 94143, United States
| | - Jason Lui
- Department of Urology and Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, 94143, United States
| | - Benjamin N Breyer
- Department of Urology and Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, 94143, United States
| | | | - Tal Cohen
- Department of Urology, Mayo Clinic, Rochester, MN, 55905, United States
| | - Ryan P Smith
- Department of Urology, University of Virginia, Charlottesville, VA, 22908, United States
| | - Clinton Yeaman
- Department of Urology, University of Virginia, Charlottesville, VA, 22908, United States
| | - Andrew J Winkelman
- Department of Urology, University of Virginia, Charlottesville, VA, 22908, United States
| | - Carlos Villanueva
- Department of Urology, Phoenix Children's Hospital, Phoenix, AZ, 033302, United States
| | - Nora G Kern
- Department of Urology, University of Virginia, Charlottesville, VA, 22908, United States
| |
Collapse
|
33
|
Kucher M, Dannemann M, Modler N, Böhm R, Hannig C, Kühne MT. Determination of a Representative and 3D-Printable Root Canal Geometry for Endodontic Investigations and Pre-Clinical Endodontic Training-An Ex Vivo Study. Dent J (Basel) 2023; 11:dj11050133. [PMID: 37232784 DOI: 10.3390/dj11050133] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023] Open
Abstract
Models of artificial root canals are used in several fields of endodontic investigations and pre-clinical endodontic training. They allow the physical testing of dental treatments, the operating of instruments used and the interaction between these instruments and the tissues. Currently, a large number of different artificial root canal models exist whose geometry is created either on the basis of selected natural root canal systems or to represent individual geometrical properties. Currently, only a few geometric properties such as the root canal curvature or the endodontic working width are taken into consideration when generating these models. To improve the representational capability of the artificial root canal models, the aim of the current study is therefore to generate an artificial root canal based on the statistical evaluation of selected natural root canals. Here, the approach introduced by Kucher for determining the geometry of a root canal model is used, which is based on the measurement and statistical evaluation of the root canal center line's curvatures and their cross-sectional dimensions. Using the example of unbranched distal root canals of mandibular molars (n = 29), an artificial root canal model representing the mean length, curvature, torsion and cross-sectional dimensions of these teeth could be derived.
Collapse
Affiliation(s)
- Michael Kucher
- Faculty of Engineering, Leipzig University of Applied Sciences, 04277 Leipzig, Germany
| | - Martin Dannemann
- Faculty of Automotive Engineering, Institute of Energy and Transport Engineering, Westsächsische Hochschule Zwickau, 08056 Zwickau, Germany
| | - Niels Modler
- Institute of Lightweight Engineering and Polymer Technology (ILK), Technische Universität Dresden, 01307 Dresden, Germany
| | - Robert Böhm
- Faculty of Engineering, Leipzig University of Applied Sciences, 04277 Leipzig, Germany
| | - Christian Hannig
- Clinic of Operative and Pediatric Dentistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Marie-Theres Kühne
- Clinic of Operative and Pediatric Dentistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| |
Collapse
|
34
|
Shu S, Wang Z, Chen P, Zhong J, Tang W, Wang ZL. Machine-Learning Assisted Electronic Skins Capable of Proprioception and Exteroception in Soft Robotics. Adv Mater 2023; 35:e2211385. [PMID: 36750731 DOI: 10.1002/adma.202211385] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/01/2023] [Indexed: 05/05/2023]
Abstract
Inspired by natural biological systems, soft robots have recently been developed, showing tremendous potential in real-world applications because of their intrinsic softness and deformability. The confluence of electronic skins and machine learning is extensively studied to create effective biomimetic robotic systems. Based on a differential piezoelectric matrix, this study presents a shape-sensing electronic skin (SSES) that can recognize surface conformations with minimal interference from pressing, stretching, or other surrounding stimuli. It is then integrated with soft robots to reconstruct their shape during movement, serving as a proprioceptive sense. Additionally, the robot can utilize machine learning to identify various terrains, demonstrating exteroception and pointing toward more advanced autonomous robots capable of performing real-world tasks in challenging environments.
Collapse
Affiliation(s)
- Sheng Shu
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ziming Wang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Pengfei Chen
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Junwen Zhong
- Department of Electromechanical Engineering, Centre for Artificial Intelligence and Robotics University of Macau, Macao, 999078, China
| | - Wei Tang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhong Lin Wang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| |
Collapse
|
35
|
Ali Moussa HY, Shin KC, Ponraj J, Kim SJ, Ryu JK, Mansour S, Park Y. Requirement of Cholesterol for Calcium-Dependent Vesicle Fusion by Strengthening Synaptotagmin-1-Induced Membrane Bending. Adv Sci (Weinh) 2023; 10:e2206823. [PMID: 37058136 DOI: 10.1002/advs.202206823] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/09/2023] [Indexed: 05/27/2023]
Abstract
Cholesterol is essential for neuronal activity and function. Cholesterol depletion in the plasma membrane impairs synaptic transmission. However, the molecular mechanisms by which cholesterol deficiency leads to defects in vesicle fusion remain poorly understood. Here, it is shown that cholesterol is required for Ca2+ -dependent native vesicle fusion using the in vitro reconstitution of fusion and amperometry to monitor exocytosis in chromaffin cells. Purified native vesicles are crucial for the reconstitution of physiological Ca2+ -dependent fusion, because vesicle-mimicking liposomes fail to reproduce the cholesterol effect. Intriguingly, cholesterol has no effect on the membrane binding of synaptotagmin-1, a Ca2+ sensor for ultrafast fusion. Cholesterol strengthens local membrane deformation and bending induced by synaptotagmin-1, thereby lowering the energy barrier for Ca2+ -dependent fusion to occur. The data provide evidence that cholesterol depletion abolishes Ca2+ -dependent vesicle fusion by disrupting synaptotagmin-1-induced membrane bending, and suggests that cholesterol is an essential lipid regulator for Ca2+ -dependent fusion.
Collapse
Affiliation(s)
- Houda Yasmine Ali Moussa
- Neurological Disorders Research Center, Qatar Biomedical Research Institute (QBRI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
| | - Kyung Chul Shin
- Neurological Disorders Research Center, Qatar Biomedical Research Institute (QBRI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
| | | | - Soo Jin Kim
- Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea
| | - Je-Kyung Ryu
- Department of Physics & Astronomy, Seoul National University. 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Said Mansour
- HBKU Core Labs, Hamad Bin Khalifa University (HBKU), Doha, Qatar
| | - Yongsoo Park
- Neurological Disorders Research Center, Qatar Biomedical Research Institute (QBRI), Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
- College of Health & Life Sciences (CHLS), Hamad Bin Khalifa University (HBKU), Qatar Foundation, Doha, Qatar
| |
Collapse
|
36
|
Zhou J, Zhan Z, Zhu F, Han Y. Preparation of Flexible Wavelength-Selective Metasurface for Infrared Radiation Regulation. ACS Appl Mater Interfaces 2023; 15:21629-21639. [PMID: 37094293 DOI: 10.1021/acsami.3c01452] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Perpetual advancements in modern detection techniques have augmented the requirement of infrared camouflage; however, its development is impeded by multiband compatible regulation and curved application targets. Here, a flexible wavelength-selective metasurface based on two metal-dielectric-metal resonators is experimentally demonstrated for infrared radiation regulation with thermal management utilizing magnetic polariton. Low emissivity in atmosphere windows (infrared stealth) and high emissivity in the wavelength of 5-8 μm nonatmospheric window (radiative cooling) are simultaneously achieved. In comparison with conventional hard substrates, it is for the first time the composite wavelength-length metasurface is successfully prepared directly on a flexible polyimide film via applying polyimide double-sided tapes and S1805/LOR5A bilayer stack lift-off technology. Not only does this method successfully overcome the debonding problem of photoresist on the flexible substrate, but it also solves the bulging problem of the substrate as well as the limitation of high temperature. Besides, the temperature and infrared radiation distributions of flexible wavelength-selective metasurfaces with different curvatures are first investigated. The compared results reveal that the metasurface with larger curvature has a better infrared camouflage performance. Furthermore, the cycle stability of the flexible metasurface is tested, and the results show that the infrared radiation regulation is stable after 30 cycles with essentially no change. This study provides a guideline for preparing flexible composite metasurfaces and avoids the trouble of replacing the metal/dielectric material of the initial structure with a flexible material to improve the structure for application to curved surfaces, thus broadening implications in enhancing the effective bonding of metasurfaces to target surfaces.
Collapse
Affiliation(s)
- Jiangrong Zhou
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Zhigang Zhan
- Kuang-Chi Institute of Advanced Technology, Shenzhen 518000, China
| | - Feiding Zhu
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yuge Han
- MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| |
Collapse
|
37
|
Matsuyama K, Shimizu T, Kato T. Systematic Classification of Curvature and Feature Descriptor of 3D Shape and Its Application to "Complexity" Quantification Methods. Entropy (Basel) 2023; 25:e25040624. [PMID: 37190412 PMCID: PMC10137503 DOI: 10.3390/e25040624] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 05/17/2023]
Abstract
Generative design is a system that automates part of the design process, but it cannot evaluate psychological issues related to shapes, such as "beauty" and "liking". Designers therefore evaluate and choose the generated shapes based on their experience. Among the design features, "complexity" is considered to influence "aesthetic preference". Although feature descriptors calculated from curvature can be used to quantify "complexity", the selection guidelines for curvature and feature descriptors have not been adequately discussed. Therefore, this study aimed to conduct a systematic classification of curvature and a feature descriptor of 3D shapes and to apply the results to the "complexity" quantification. First, we surveyed the literature on curvature and feature descriptors and conducted a systematic classification. To quantify "complexity", we used five curvatures (Gaussian curvature, mean curvature, Casorati curvature, shape index, and curvature index) and a feature descriptor (entropy of occurrence probability) obtained from the classification and compared them with the sensory evaluation values of "complexity". The results showed that the determination coefficient between the quantified and sensory evaluation values of "complexity" was highest when the mean curvature was used. In addition, the Casorati curvature tended to show the highest signal-to-noise ratio (i.e., a high determination coefficient irrespective of the parameters set in the entropy calculation). These results will foster the development of generative design of 3D shapes using psychological evaluation.
Collapse
Affiliation(s)
- Kazuma Matsuyama
- School of Integrated Design Engineering, Graduate School of Keio University, Yokohama 223-8522, Japan
| | - Takahiro Shimizu
- School of Integrated Design Engineering, Graduate School of Keio University, Yokohama 223-8522, Japan
| | - Takeo Kato
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
| |
Collapse
|
38
|
Bogdanov M. The power and challenge of lipid (a)symmetry across the membrane and cell. Emerg Top Life Sci 2023; 7:1-6. [PMID: 36988943 PMCID: PMC10725184 DOI: 10.1042/etls20220088] [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: 01/29/2023] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 03/30/2023]
Abstract
Membrane asymmetry means that the two sides of membrane are structurally, physically and functionally different. Membrane asymmetry is largely related to the lipid sidedness and particularly to compositional (lipid head and acyl group) and physical (lipid packing order, charge, hydration and H-bonding interactions) differences in the inner and outer leaflets of lipid bilayer. Chemically, structurally and conformationally different non-covalent bound lipid molecules are physically fluid and deformable and enable to interact dynamically to form transient arrangements with asymmetry both perpendicular and parallel to the plane of the lipid bilayer. Although biological membranes are almost universally asymmetric however the asymmetry is not absolute since only drastic difference in the number of lipids per leaflet is found and symmetric arrangements are possible. Asymmetry is thought to direct and influence many core biological functions by altering the membrane's collective biochemical, biophysical and structural properties. Asymmetric transbilayer lipid distribution is found across all lipid classes, cells and near all endomembrane compartments. Why cell membranes are (a)symmetric and adopt almost exclusively highly entropically disfavored asymmetric state?
Collapse
Affiliation(s)
- Mikhail Bogdanov
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX 77030, U.S.A
| |
Collapse
|
39
|
Cho I. Principle and Mechanism of Double Eyelid Formation. Arch Plast Surg 2023; 50:142-147. [PMID: 36999142 PMCID: PMC10049822 DOI: 10.1055/s-0042-1751100] [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] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/16/2021] [Indexed: 03/30/2023] Open
Abstract
Some of Asian eyelids have double fold and some do not. Many people tend to prefer double eyelid in aesthetic and functional reasons. Since the mechanism of double eyelid is bonding the eyelid skin to the eye-opening tissue, the principle of double eyelid surgery is also connecting the eyelid skin to levator component. Double eyelids are differentiated by their shape according to the height and curvature. The double eyelid surgery procedure is divided into incision method and nonincision method. And the incision method is subdivided into double fold line design, skin and oculi muscle incision or excision, pretarsal or preaponeurotic soft tissue excision, fixation of posterior lamella to anterior lamella, and skin suture. The nonincision method is to connect the posterior lamella and the anterior lamella as a thread only without an incision. A successful double eyelid surgery creates a fold well-balanced in height, curvature, and depth of the fold based on patient's preference. In this article, the author's own methods of performing surgery are described, with a step-by-step guide and surgical tips.
Collapse
Affiliation(s)
- Inchang Cho
- BIO Plastic Surgery Clinic, Seoul, Korea
- Address for correspondence Inchang Cho, MD, PhD BIO Plastic Surgery ClinicSYH Tower, 107 Dosan-daero, Gangnam-gu, Seoul 16035Korea
| |
Collapse
|
40
|
Park S, On SY, Kim J, Lee J, Kim TS, Wardle BL, Kim SS. Electronic Packaging Enhancement Engineered by Reducing the Bonding Temperature via Modified Cure Cycles. ACS Appl Mater Interfaces 2023; 15:11024-11032. [PMID: 36696132 PMCID: PMC9982811 DOI: 10.1021/acsami.2c21229] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Semiconductor packaging continues to reduce in thickness following the overall thinning of electronic devices such as smartphones and tablets. As the package becomes thinner, the warpage of the semiconductor package becomes more important due to the reduced bending stiffness and driven by thermal residual stresses and thermal expansion mismatch during the epoxy molding compound (EMC) curing to create the package. To address this packaging reliability issue, in this study, we developed a modified cure cycle that adds a rapid cooling step to the conventional cure cycle (CCC) to enhance the reliability of the EMC molded to a copper substrate (EMC/Cu bi-layer package) by lowering the bonding temperature of the EMC/Cu bi-layer package. Modeling of the package via Timoshenko theory including effective cure shrinkage allowed the rapid cooling step to be quantified and confirmed via experiments. The modified cure cycle resulted in a 26% reduction in residual strain, a 27% reduction in curvature, and a 40% increase in peel strength compared to the CCC, suggesting that this is an effective new method for managing warping effects in such packaged structures.
Collapse
Affiliation(s)
- Seong
Yeon Park
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon305-701, Republic of Korea
| | - Seung Yoon On
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon305-701, Republic of Korea
| | - Junmo Kim
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon305-701, Republic of Korea
| | - Jeonyoon Lee
- Department
of Aerospace Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon305-701, Republic of Korea
| | - Taek-Soo Kim
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon305-701, Republic of Korea
| | - Brian L. Wardle
- Department
of Aeronautics and Astronautics, Massachusetts
Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts02139, United States
- Department
of Mechanical Engineering, Massachusetts
Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts02139, United States
| | - Seong Su Kim
- Department
of Mechanical Engineering, Korea Advanced
Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon305-701, Republic of Korea
| |
Collapse
|
41
|
Wilcox RR, Rousselet GA. An Updated Guide to Robust Statistical Methods in Neuroscience. Curr Protoc 2023; 3:e719. [PMID: 36971417 DOI: 10.1002/cpz1.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
There is a vast array of new and improved methods for comparing groups and studying associations that offer the potential for substantially increasing power, providing improved control over the probability of false positives, and yielding a deeper and more nuanced understanding of data. These new techniques effectively deal with four insights into when and why conventional methods can be unsatisfactory. But for the non-statistician, this vast array of techniques for comparing groups and studying associations can seem daunting. This article briefly reviews when and why conventional methods can have relatively low power and yield misleading results. The main goal is to suggest guidelines regarding the use of modern techniques that improve upon classic approaches such as Pearson's correlation, ordinary linear regression, ANOVA, and ANCOVA. This updated version includes recent advances dealing with effect sizes, including situations where there is a covariate. The R code, figures, and accompanying notebooks have been updated as well. © 2023 The Authors. Current Protocols published by Wiley Periodicals LLC.
Collapse
Affiliation(s)
- Rand R Wilcox
- Department of Psychology, University of Southern California, Los Angeles, California
| | - Guillaume A Rousselet
- School of Psychology and Neuroscience, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| |
Collapse
|
42
|
Zhai X, Hu P, Wang Y, Zhang H, Cao L, Huang T, Lu J, Luo Y. Association of local solid mechanical, hemodynamic and morphological characteristics with ruptured intracranial aneurysm. Int J Numer Method Biomed Eng 2023; 39:e3674. [PMID: 36541137 DOI: 10.1002/cnm.3674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 10/31/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
The rupture of intracranial aneurysms (IAs) is a complicated phenomenon of which the mechanism is not fully understood. The purpose of this study is to associate local solid mechanical, hemodynamic, and morphological characteristics with rupture regions through statistical means, in an attempt to identify the parameters that are indicative of rupture propensity for IAs. Twenty patient-specific ruptured IA models were reconstructed from digital subtraction angiography (DSA), and applied in the analysis of wall tension, wall shear stress (WSS) and curvature. The precise rupture locations were marked out through intraoperative videos. Pearson correlation analysis was employed to investigate the correlations of these three parameters with patient characteristics and global geometric features. Univariate and multivariate logistic regression analysis were further performed on wall tension, WSS and curvature with regards to rupture and nonrupture regions. Receiver operating characteristic (ROC) analysis defining area under the curve (AUC) was performed on these three parameters. The univariate model of wall tension (AUC, 0.9750), WSS (AUC, 0.9300), curvature (0.8150) and their combined multivariate model (AUC, 0.9875) all present high AUC values. The wall tension, WSS and curvature are acceptable parameters relating to rupture regions. The rupture odd is more sensitive to the wall tension and WSS than curvature. Each logistic model is capable in discriminating ruptures from nonrupture regions, while the multivariate model is the most efficient.
Collapse
Affiliation(s)
- Xiaodong Zhai
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Peng Hu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Yadong Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Hongqi Zhang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Lan Cao
- Boea Wisdom (Hangzhou) Network Technology Co., Ltd., Hangzhou, Zhejiang, China
| | - Tianming Huang
- Boea Wisdom (Hangzhou) Network Technology Co., Ltd., Hangzhou, Zhejiang, China
| | - Jia Lu
- Department of Mechanical Engineering, The University of Iowa, Iowa City, Iowa, USA
| | - Yuanming Luo
- Department of Mechanical Engineering, The University of Iowa, Iowa City, Iowa, USA
| |
Collapse
|
43
|
Acevedo-Salas U, Croes B, Zhang Y, Cregut O, Dorkenoo KD, Kirbus B, Singh E, Beccard H, Rüsing M, Eng LM, Hertel R, Eliseev EA, Morozovska AN, Cherifi-Hertel S. Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls. Nano Lett 2023; 23:795-803. [PMID: 36668991 DOI: 10.1021/acs.nanolett.2c03579] [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] [Indexed: 06/17/2023]
Abstract
Ferroelectric domain boundaries are quasi-two-dimensional functional interfaces with high prospects for nanoelectronic applications. Despite their reduced dimensionality, they can exhibit complex non-Ising polarization configurations and unexpected physical properties. Here, the impact of the three-dimensional (3D) curvature on the polarization profile of nominally uncharged 180° domain walls in LiNbO3 is studied using second-harmonic generation microscopy and 3D polarimetry analysis. Correlations between the domain-wall curvature and the variation of its internal polarization unfold in the form of modulations of the Néel-like character, which we attribute to the flexoelectric effect. While the Néel-like character originates mainly from the tilting of the domain wall, the internal polarization adjusts its orientation due to the synergetic upshot of dipolar and monopolar bound charges and their variation with the 3D curvature. Our results show that curved interfaces in solid crystals may offer a rich playground for tailoring nanoscale polar states.
Collapse
Affiliation(s)
- Ulises Acevedo-Salas
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| | - Boris Croes
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| | - Yide Zhang
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| | - Olivier Cregut
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| | - Kokou Dodzi Dorkenoo
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| | - Benjamin Kirbus
- Institute of Applied Physics, Technische Universität Dresden, 01062Dresden, Germany
| | - Ekta Singh
- Institute of Applied Physics, Technische Universität Dresden, 01062Dresden, Germany
| | - Henrik Beccard
- Institute of Applied Physics, Technische Universität Dresden, 01062Dresden, Germany
| | - Michael Rüsing
- Institute of Applied Physics, Technische Universität Dresden, 01062Dresden, Germany
| | - Lukas M Eng
- Institute of Applied Physics, Technische Universität Dresden, 01062Dresden, Germany
- ct.qmat: Würzburg-Dresden Cluster of Excellence - EXC 2147, TU Dresden, https://www.ctqmat.de/
| | - Riccardo Hertel
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| | - Eugene A Eliseev
- Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Krjijanovskogo 3, 03142Kyiv, Ukraine
| | - Anna N Morozovska
- Institute of Physics, National Academy of Sciences of Ukraine, 46, pr. Nauky, 03028Kyiv, Ukraine
| | - Salia Cherifi-Hertel
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504, 67034Strasbourg, France
| |
Collapse
|
44
|
Lottermoser JA, Dittman JS. Complexin Membrane Interactions: Implications for Synapse Evolution and Function. J Mol Biol 2023; 435:167774. [PMID: 35931110 PMCID: PMC9807284 DOI: 10.1016/j.jmb.2022.167774] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 06/23/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 02/04/2023]
Abstract
The molecules and mechanisms behind chemical synaptic transmission have been explored for decades. For several of the core proteins involved in synaptic vesicle fusion, we now have a reasonably detailed grasp of their biochemical, structural, and functional properties. Complexin is one of the key synaptic proteins for which a simple mechanistic understanding is still lacking. Living up to its name, this small protein has been associated with a variety of roles differing between synapses and between species, but little consensus has been reached on its fundamental modes of action. Much attention has been paid to its deeply conserved SNARE-binding properties, while membrane-binding features of complexin and their functional significance have yet to be explored to the same degree. In this review, we summarize the known membrane interactions of the complexin C-terminal domain and their potential relevance to its function, synaptic localization, and evolutionary history.
Collapse
Affiliation(s)
| | - Jeremy S Dittman
- Department of Biochemistry, Weill Cornell Medicine, New York, NY, United States.
| |
Collapse
|
45
|
Li S, Wang Y, Ge W, Zhang W, Lu B, Feng F, Ni C, Xiao SJ. Tuning the Roundabout of Four-Point-Star Tiles with the Core Arm Length of Three Half-Turns for 2D DNA Arrays. Chemistry 2023; 29:e202202863. [PMID: 36251733 DOI: 10.1002/chem.202202863] [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] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Indexed: 11/05/2022]
Abstract
By rationally adjusting the weaving modes of point-star tiles, the curvature inherent in the tiles can be changed, and various DNA nanostructures can be assembled, such as planar wireframe meshes, perforated wireframe tubes, and curved wireframe polyhedra. Based on the weaving and tiling architectures for traditional point-star tiles with the core arm length at two DNA half-turns, we improved the weaving modes of our newly reported four-point-star tiles with the core arm length at three half-turns to adjust their curvature and rigidity for assembling 2D arrays of DNA grids and tubes. Following our previous terms and methods to analyze the structural details of E-tiling tubes, we used the chiral indices (n,m) to describe the most abundant tube of typical assemblies; especially, we applied both one-locus and/or dual-locus biotin/streptavidin (SA) labelling strategies to define the configurations of two specific tubes, along with the absolute conformations of their component tiles. Such structural details of the DNA tubes composed of tiles with addressable concave and convex faces and packing directions should help us understand their physio-chemical and biological properties, and therefore promote their applications in drug delivery, biocatalysis, biomedicine, etc.
Collapse
Affiliation(s)
- Shijie Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Yantong Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Wei Ge
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Wei Zhang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Biao Lu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Feiyang Feng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Caihong Ni
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| | - Shou-Jun Xiao
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, P.R. China
| |
Collapse
|
46
|
Chandrashekar A, Handa A, Lapolla P, Shivakumar N, Ngetich E, Grau V, Regent Lee. Prediction of Abdominal Aortic Aneurysm Growth Using Geometric Assessment of Computerized Tomography Images Acquired During the Aneurysm Surveillance Period. Ann Surg 2023; 277:e175-83. [PMID: 33630463 DOI: 10.1097/SLA.0000000000004711] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE We investigated the utility of geometric features for future AAA growth prediction. BACKGROUND Novel methods for growth prediction of AAA are recognized as a research priority. Geometric feature have been used to predict cerebral aneurysm rupture, but not examined as predictor of AAA growth. METHODS Computerized tomography (CT) scans from patients with infra-renal AAAs were analyzed. Aortic volumes were segmented using an automated pipeline to extract AAA diameter (APD), undulation index (UI), and radius of curvature (RC). Using a prospectively recruited cohort, we first examined the relation between these geometric measurements to patients' demographic features (n = 102). A separate 192 AAA patients with serial CT scans during AAA surveillance were identified from an ongoing clinical database. Multinomial logistic and multiple linear regression models were trained and optimized to predict future AAA growth in these patients. RESULTS There was no correlation between the geometric measurements and patients' demographic features. APD (Spearman r = 0.25, P < 0.05), UI (Spearman r = 0.38, P < 0.001) and RC (Spearman r =-0.53, P < 0.001) significantly correlated with annual AAA growth. Using APD, UI, and RC as 3 input variables, the area under receiver operating characteristics curve for predicting slow growth (<2.5 mm/yr) or fast growth (>5 mm/yr) at 12 months are 0.80 and 0.79, respectively. The prediction or growth rate is within 2 mm error in 87% of cases. CONCLUSIONS Geometric features of an AAA can predict its future growth. This method can be applied to routine clinical CT scans acquired from patients during their AAA surveillance pathway.
Collapse
|
47
|
Muacevic A, Adler JR, Vishak M, John J, Srinivasan RG, Mirunalini G. Factors Influencing the Time of Intubation Using C-MAC D-Blade® Video Laryngoscope: An Observational Cross-Sectional Study. Cureus 2023; 15:e34050. [PMID: 36824542 PMCID: PMC9942010 DOI: 10.7759/cureus.34050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2023] [Indexed: 01/23/2023] Open
Abstract
Purpose C-MAC D-Blade® (Karl Storz, Tuttlingen, Germany) video laryngoscope (VL) has proved to be of immense utility in difficult intubation. But unfortunately, in an urgent situation, the predictable correct curvature of the endotracheal tube for effortless intubation is not met. We hypothesized that expertise is the most important variable in intubation and that novice students will be unable to intubate if the angle of curvature is incorrect. Methods An observational cross-sectional study was planned with 30 anesthesia residents, categorized into three groups based on their expertise in laryngoscopy. Students had to intubate an airway mannequin using the C-MAC D-Blade® VL with three different stylet angulations. The curvatures were 80, 100, and 120 degrees, which are commonly encountered in routine day-to-day practice. The time to get a stable glottic view, time to intubate, and ease of intubation were measured. Results The mean time to intubate was the least with 100-degree angulation in group C (19.60 ± 0.97) while the maximum time was in group A with 80-degree angulation (61.49 ± 3.69). A significant difference was noted in time to get a stable glottic view when compared between the groups. There was no difference in time to intubate with different stylet angulations when compared between groups. Conclusions Novices and experts could intubate even if the angle of curvature was incorrect taking more time. The time to laryngoscopy is significantly dependent on experience, but the time to intubate is influenced by the angle of curvature of the stylet.
Collapse
|
48
|
Hübner R, Ufken ES. On the beauty of vases: Birkhoff's aesthetic measure versus Hogarth's line of beauty. Front Psychol 2023; 14:1114793. [PMID: 37151333 PMCID: PMC10159058 DOI: 10.3389/fpsyg.2023.1114793] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/31/2023] [Indexed: 05/09/2023] Open
Abstract
Vases continue to be important aesthetic objects in almost all developed cultures. Nevertheless, there is little to no systematic research on the shape characteristics that determine their beauty. A famous exception is Birkhoff, who in his 1933 book used the geometric ratios of vases to calculate their beauty. One form factor that he discussed theoretically but did not include in his aesthetic measure is the outline curvature of vases. This is despite the fact that William Hogarth recognized curvature as relevant to the aesthetic evaluation of forms as early as 1753, demonstrating this with his Line of Beauty. Given the great influence of these two ideas, the aim of the present study was to examine their contribution to the aesthetics of vases. For this objective, we designed a set of symbolic vases by systematically varying width and curvature, and asked participants to rate their beauty in an online experiment. The results show that both geometric ratios and curvature contribute to the beauty of the vases.
Collapse
|
49
|
Li Q, Ji MG, Chapagain A, Cho IH, Kim J. Curvature-Adjustable Polymeric Nanolens Fabrication Using UV-Controlled Nanoimprint Lithography. Micromachines (Basel) 2022; 13:2183. [PMID: 36557482 PMCID: PMC9783668 DOI: 10.3390/mi13122183] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Nanolenses are gaining importance in nanotechnology, but their challenging fabrication is thwarting their wider adoption. Of particular challenge is facile control of the lens' curvature. In this work, we demonstrate a new nanoimprinting technique capable of realizing polymeric nanolenses in which the nanolens' curvature is optically controlled by the ultraviolet (UV) dose at the pre-curing step. Our results reveal a regime in which the nanolens' height changes linearly with the UV dose. Computational modeling further uncovers that the polymer undergoes highly nonlinear dynamics during the UV-controlled nanoimprinting process. Both the technique and the process model will greatly advance nanoscale science and manufacturing technology.
Collapse
Affiliation(s)
- Qiang Li
- Department of Electrical & Computer Engineering, Iowa State University, Ames, IA 50011, USA
| | - Myung Gi Ji
- Department of Electrical & Computer Engineering, Iowa State University, Ames, IA 50011, USA
| | - Ashish Chapagain
- Department of Civil, Construction & Environmental Engineering, Iowa State University, Ames, IA 50011, USA
| | - In Ho Cho
- Department of Civil, Construction & Environmental Engineering, Iowa State University, Ames, IA 50011, USA
| | - Jaeyoun Kim
- Department of Electrical & Computer Engineering, Iowa State University, Ames, IA 50011, USA
| |
Collapse
|
50
|
Dong N, Sun Y, Sun G, Zhang L, Sun S. Chiral DNA Nanotubes Self-Assembled from Building Blocks with Tailorable Curvature and Twist. Small 2022; 18:e2204996. [PMID: 36287092 DOI: 10.1002/smll.202204996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/04/2022] [Indexed: 06/16/2023]
Abstract
DNA nanotubes with prescribed geometry could allow for nanomaterial organization with designed optical or electrical function. As one of the dominating driving forces for DNA nanotube assembly, intrinsic curvature and twist of building blocks can be induced by bending deformation and twisting deformation. However, it is still unknown that how bending and twisting design on nanoscale building blocks affects the geometry of DNA tubes with micrometer length. Here, through targeted base pair deletion or insertion, the amount of bending deformation in building blocks is modulated by length gradient and the amount of twisting deformation is modulated by average twist density. This work systematically explores the independent effect and synergistic effect of two types of deformation on tube geometry, including diameter, chirality, and helical angles, via a streptavidin-labeling technique. The design rules enable the construction of DNA nanotubes with prescribed chirality and tailored diameters.
Collapse
Affiliation(s)
- Niuniu Dong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
| | - Yishan Sun
- School of Clinical Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
| | - Geng Sun
- The College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Lei Zhang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Sha Sun
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, China
| |
Collapse
|