Увійти

Готові списки джерел за темами / Crawling motility

Добірка наукової літератури з теми "Crawling motility"

Автор: Grafiati

Опубліковано: 14 березня 2023

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Статті в журналах
Дисертації
Частини книг
Тези доповідей конференцій

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Crawling motility".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Crawling motility"

1

Recho, Pierre, Thibaut Putelat, and Lev Truskinovsky. "Mechanics of motility initiation and motility arrest in crawling cells." Journal of the Mechanics and Physics of Solids 84 (November 2015): 469–505. http://dx.doi.org/10.1016/j.jmps.2015.08.006.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Yamasaki, Akira, Michiyo Suzuki, Tomoo Funayama, Takahito Moriwaki, Tetsuya Sakashita, Yasuhiko Kobayashi, and Qiu-Mei Zhang-Akiyama. "High-Dose Irradiation Inhibits Motility and Induces Autophagy in Caenorhabditis elegans." International Journal of Molecular Sciences 22, no. 18 (September 10, 2021): 9810. http://dx.doi.org/10.3390/ijms22189810.

Повний текст джерела

Анотація:

Radiation damages many cellular components and disrupts cellular functions, and was previously reported to impair locomotion in the model organism Caenorhabditis elegans. However, the response to even higher doses is not clear. First, to investigate the effects of high-dose radiation on the locomotion of C. elegans, we investigated the dose range that reduces whole-body locomotion or leads to death. Irradiation was performed in the range of 0–6 kGy. In the crawling analysis, motility decreased after irradiation in a dose-dependent manner. Exposure to 6 kGy of radiation affected crawling on agar immediately and caused the complete loss of motility. Both γ-rays and carbon-ion beams significantly reduced crawling motility at 3 kGy. Next, swimming in buffer was measured as a motility index to assess the response over time after irradiation and motility similarly decreased. However, swimming partially recovered 6 h after irradiation with 3 kGy of γ-rays. To examine the possibility of a recovery mechanism, in situ GFP reporter assay of the autophagy-related gene lgg-1 was performed. The fluorescence intensity was stronger in the anterior half of the body 7 h after irradiation with 3 kGy of γ-rays. GFP::LGG-1 induction was observed in the pharynx, neurons along the body, and the intestine. Furthermore, worms were exposed to region-specific radiation with carbon-ion microbeams and the trajectory of crawling was measured by image processing. Motility was lower after anterior-half body irradiation than after posterior-half body irradiation. This further supported that the anterior half of the body is important in the locomotory response to radiation.

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Alteraifi, A. M., and D. V. Zhelev. "Transient increase of free cytosolic calcium during neutrophil motility responses." Journal of Cell Science 110, no. 16 (August 15, 1997): 1967–77. http://dx.doi.org/10.1242/jcs.110.16.1967.

Повний текст джерела

Анотація:

The release of free cytosolic calcium is a secondary messenger for many cell functions. Here we study the coupling between the release of intracellular calcium and motility responses of the human neutrophil. Two groups of motility responses are studied: motility responses in the presence of adhesion, such as cell crawling and phagocytosis, and motility responses ‘in suspension’, such as pseudopod formation. The motility responses are stimulated by the chemoattractant N-formyl-methionyl-leucyl-phenylalanine (fMLP) and the release of calcium is monitored by measuring the fluorescence from fluo-3. fMLP induces a single release of free cytosolic calcium both in suspended cells and in crawling cells. Calcium release is a threshold process where the number of cells releasing calcium is dependent on the chemoattractant concentration while the amount of released calcium is not. For suspended cells the threshold fMLP concentration for calcium release is in the order of 10(−7) M, while for crawling cells it is in the order of 5x10(−9) M. The smaller value of the threshold fMLP concentration for crawling cells compared to that for suspended cells suggests that bound adhesion receptors are involved in the calcium release. The threshold fMLP concentration for suspended cells is also larger than the minimum fMLP concentration (in the order of 10(−10) M) for initiating pseudopod formation. So, there is a range of fMLP concentrations where pseudopod formation occurs without calcium release. To explore this relationship further, pseudopod extension and calcium release are stimulated many times in a single cell by using fMLP concentrations above the threshold. The result is that calcium release is desensitized by fMLP while pseudopod extension is not. All the results taken together suggest that the release of free cytosolic calcium and the rearrangement of the F-actin network during motility follow different signaling pathways.

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Mai, Melissa H., and Brian A. Camley. "Hydrodynamic effects on the motility of crawling eukaryotic cells." Soft Matter 16, no. 5 (2020): 1349–58. http://dx.doi.org/10.1039/c9sm01797f.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Bottino, Dean, Alexander Mogilner, Tom Roberts, Murray Stewart, and George Oster. "How nematode sperm crawl." Journal of Cell Science 115, no. 2 (January 15, 2002): 367–84. http://dx.doi.org/10.1242/jcs.115.2.367.

Повний текст джерела

Анотація:

Sperm of the nematode, Ascaris suum, crawl using lamellipodial protrusion, adhesion and retraction, a process analogous to the amoeboid motility of other eukaryotic cells. However, rather than employing an actin cytoskeleton to generate locomotion, nematode sperm use the major sperm protein (MSP). Moreover, nematode sperm lack detectable molecular motors or the battery of actin-binding proteins that characterize actin-based motility. The Ascaris system provides a simple ‘stripped down’ version of a crawling cell in which to examine the basic mechanism of cell locomotion independently of other cellular functions that involve the cytoskeleton. Here we present a mechanochemical analysis of crawling in Ascaris sperm. We construct a finite element model wherein (a) localized filament polymerization and bundling generate the force for lamellipodial extension and (b) energy stored in the gel formed from the filament bundles at the leading edge is subsequently used to produce the contraction that pulls the rear of the cell forward. The model reproduces the major features of crawling sperm and provides a framework in which amoeboid cell motility can be analyzed. Although the model refers primarily to the locomotion of nematode sperm, it has important implications for the mechanics of actin-based cell motility.Movies available on-line.

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Boscacci, Rémy T., Friederike Pfeiffer, Kathrin Gollmer, Ana Isabel Checa Sevilla, Ana Maria Martin, Silvia Fernandez Soriano, Daniela Natale, et al. "Comprehensive analysis of lymph node stroma-expressed Ig superfamily members reveals redundant and nonredundant roles for ICAM-1, ICAM-2, and VCAM-1 in lymphocyte homing." Blood 116, no. 6 (August 12, 2010): 915–25. http://dx.doi.org/10.1182/blood-2009-11-254334.

Повний текст джерела

Анотація:

Abstract Although it is well established that stromal intercellular adhesion molecule-1 (ICAM-1), ICAM-2, and vascular cell adhesion molecule-1 (VCAM-1) mediate lymphocyte recruitment into peripheral lymph nodes (PLNs), their precise contributions to the individual steps of the lymphocyte homing cascade are not known. Here, we provide in vivo evidence for a selective function for ICAM-1 > ICAM-2 > VCAM-1 in lymphocyte arrest within noninflamed PLN microvessels. Blocking all 3 CAMs completely inhibited lymphocyte adhesion within PLN high endothelial venules (HEVs). Postarrest extravasation of T cells was a 3-step process, with optional ICAM-1–dependent intraluminal crawling followed by rapid ICAM-1– or ICAM-2–independent diapedesis and perivascular trapping. Parenchymal motility of lymphocytes was modestly reduced in the absence of ICAM-1, while ICAM-2 and α4-integrin ligands were not required for B-cell motility within follicles. Our findings highlight nonredundant functions for stromal Ig family CAMs in shear-resistant lymphocyte adhesion in steady-state HEVs, a unique role for ICAM-1 in intraluminal lymphocyte crawling but redundant roles for ICAM-1 and ICAM-2 in lymphocyte diapedesis and interstitial motility.

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Paoletti, P., and L. Mahadevan. "A proprioceptive neuromechanical theory of crawling." Proceedings of the Royal Society B: Biological Sciences 281, no. 1790 (September 7, 2014): 20141092. http://dx.doi.org/10.1098/rspb.2014.1092.

Повний текст джерела

Анотація:

The locomotion of many soft-bodied animals is driven by the propagation of rhythmic waves of contraction and extension along the body. These waves are classically attributed to globally synchronized periodic patterns in the nervous system embodied in a central pattern generator (CPG). However, in many primitive organisms such as earthworms and insect larvae, the evidence for a CPG is weak, or even non-existent. We propose a neuromechanical model for rhythmically coordinated crawling that obviates the need for a CPG, by locally coupling the local neuro-muscular dynamics in the body to the mechanics of the body as it interacts frictionally with the substrate. We analyse our model using a combination of analytical and numerical methods to determine the parameter regimes where coordinated crawling is possible and compare our results with experimental data. Our theory naturally suggests mechanisms for how these movements might arise in developing organisms and how they are maintained in adults, and also suggests a robust design principle for engineered motility in soft systems.

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Mai, Melissa H., and Brian A. Camley. "Transition between Swimming and Crawling: A Model of Eukaryotic Cell Motility." Biophysical Journal 116, no. 3 (February 2019): 546a. http://dx.doi.org/10.1016/j.bpj.2018.11.2938.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Ehrengruber, M. U., D. A. Deranleau, and T. D. Coates. "Shape oscillations of human neutrophil leukocytes: characterization and relationship to cell motility." Journal of Experimental Biology 199, no. 4 (April 1, 1996): 741–47. http://dx.doi.org/10.1242/jeb.199.4.741.

Повний текст джерела

Анотація:

When neutrophil leukocytes are stimulated by chemotactic factors or by substratum contact, they change their shape. Shape changes are a prerequisite for cellular migration and typically involve the extrusion of thin, veil-like lamellipods and the development of morphological polarity. Stimulation also leads to changes in the neutrophil content of filamentous actin (F-actin), which is the major cytoskeletal component. Suspensions of human neutrophils stimulated with chemoattractants exhibit sinusoidal light-scattering oscillations with a period of approximately 8 s at 37 degrees C. These oscillations arise from periodic fluctuations in the cell body size caused by lamellipod extension and retraction cycles. The light-scattering oscillations are paralleled by corresponding oscillations in F-actin content. This raises the interesting possibility that cyclic actin polymerization constitutes the driving force for shape oscillations of suspended neutrophils. Similar periodic shape changes are present in neutrophils crawling on a surface, suggesting that shape oscillations are important for neutrophil motion. This review summarizes our present knowledge about shape oscillations in suspended and crawling neutrophils and discusses a possible role for these oscillations in neutrophil motility.

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Nakamura, Shuichi. "Motility of the Zoonotic Spirochete Leptospira: Insight into Association with Pathogenicity." International Journal of Molecular Sciences 23, no. 3 (February 7, 2022): 1859. http://dx.doi.org/10.3390/ijms23031859.

Повний текст джерела

Анотація:

If a bacterium has motility, it will use the ability to survive and thrive. For many pathogenic species, their motilities are a crucial virulence factor. The form of motility varies among the species. Some use flagella for swimming in liquid, and others use the cell-surface machinery to move over solid surfaces. Spirochetes are distinguished from other bacterial species by their helical or flat wave morphology and periplasmic flagella (PFs). It is believed that the rotation of PFs beneath the outer membrane causes transformation or rolling of the cell body, propelling the spirochetes. Interestingly, some spirochetal species exhibit motility both in liquid and over surfaces, but it is not fully unveiled how the spirochete pathogenicity involves such amphibious motility. This review focuses on the causative agent of zoonosis leptospirosis and discusses the significance of their motility in liquid and on surfaces, called crawling, as a virulence factor.

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Дисертації з теми "Crawling motility"

1

Winkler, Benjamin [Verfasser], and Falko [Akademischer Betreuer] Ziebert. "Modeling crawling cellular motility with a phase field approach." Freiburg : Universität, 2019. http://d-nb.info/1193423104/34.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Cicconofri, Giancarlo. "Mathematical Models of Locomotion: Legged Crawling, Snake-like Motility, and Flagellar Swimming." Doctoral thesis, SISSA, 2015. http://hdl.handle.net/20.500.11767/4858.

Повний текст джерела

Анотація:

Three different models of motile systems are studied: a vibrating legged robot, a snake-like locomotor, and two kinds of agellar microswimmers. The vibrating robot crawls by modulating the friction with the substrate. This also leads to the ability to switch direction of motion by varying the vibration frequency. A detailed account of this phenomenon is given through a fully analytical treatment of the model. The analysis delivers formulas for the average velocity of the robot and for the frequency at which the direction switch takes place. A quantitative description of the mechanism for the friction modulation underlying the motility of the robot is also provided. Snake-like locomotion is studied through a system consisting of a planar, internally actuated, elastic rod. The rod is constrained to slide longitudinally without slipping laterally. This setting is inspired by undulatory locomotion of snakes, where frictional resistance is typically larger in the lateral direction than in the longitudinal one. The presence of constraints leads to non-standard boundary conditions, that lead to the possibility to close and solve uniquely the equations of motion. Explicit formulas are derived, which highlight the connection between observed trajectories, internal actuation, and forces exchanged with the environment. The two swimmer models (one actuated externally and the other internally) provide an example of propulsion at low Reynolds number resulting from the periodical beating of a passive elastic filament. Motions produced by generic periodic actuations are studied within the regime of small compliance of the filament. The analysis shows that variations in the velocity of beating can generate different swimming trajectories. Motion control through modulations of the actuation velocity is discussed

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Gidoni, Paolo. "Two explorations in Dynamical Systems and Mechanics: avoiding cones conditions and higher dimensional twist. Directional friction in bio-inspired locomotion." Doctoral thesis, SISSA, 2016. http://hdl.handle.net/20.500.11767/4903.

Повний текст джерела

Анотація:

This thesis contains the work done by Paolo Gidoni during the doctorate programme in Matematical Analysis at SISSA, under the supervision of A. Fonda and A. DeSimone. The thesis is composed of two parts: "Avoiding cones conditions and higher dimensional twist" and "Directional friction in bio-inspired locomotion".

Стилі APA, Harvard, Vancouver, ISO та ін.

4

"Evidence for hierarchical control of conserved, discrete motility types in crawling motility." COLUMBIA UNIVERSITY, 2008. http://pqdtopen.proquest.com/#viewpdf?dispub=3299356.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Частини книг з теми "Crawling motility"

1

Preston, Terence M., Conrad A. King, and Jeremy S. Hyams. "Crawling Movements." In The Cytoskeleton and Cell Motility, 126–57. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0393-7_6.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Preston, Terence M., Conrad A. King, and Jeremy S. Hyams. "Crawling Movements." In The Cytoskeleton and Cell Motility, 126–57. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4615-8010-2_6.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Chaudhuri, Ovijit, and Daniel A. Fletcher. "Protrusive Forces Generated by Dendritic Actin Networks During Cell Crawling." In Actin-based Motility, 359–79. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9301-1_15.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Kruse, Karsten. "Cell Crawling Driven by Spontaneous Actin Polymerization Waves." In Physical Models of Cell Motility, 69–93. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24448-8_2.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

5

ROBERTS, THOMAS M., SOL SEPSENWOL, and HANS RIS. "Sperm Motility in Nematodes: Crawling Movement without Actin." In The Cell Biology of Fertilization, 41–60. Elsevier, 1989. http://dx.doi.org/10.1016/b978-0-12-622590-7.50009-8.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Crawling motility"

1

Morikawa, Ryota, Masatada Tamakoshi, Takeshi Miyakawa, and Masako Takasu. "Numerical Simulation of the Twitching Motility of Bacterium Crawling on a Solid Surface." In Proceedings of the 12th Asia Pacific Physics Conference (APPC12). Journal of the Physical Society of Japan, 2014. http://dx.doi.org/10.7566/jpscp.1.016019.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!