Results 131 to 140 of about 4,592,681 (317)

Nutrient Transport in Concentration Gradients [PDF]

arXiv
Sessile ciliates attach to substrates and generate feeding currents to capture passing particulates and dissolved nutrients. Optimal ciliary activity that maximizes nutrient flux at the cell surface while minimizing the rate of hydrodynamic energy dissipation is well characterized in uniform nutrient fields.
arxiv  

Interspecific comparisons of anuran embryonic epidermal landscapes and energetic trade‐offs in response to changes in salinity

Developmental Dynamics, EarlyView.
Abstract Background Freshwater salinization is an emerging stressor in amphibian populations, and embryonic stages are most vulnerable. To better understand the variation in embryonic osmoregulation, we challenged embryos of two phylogenetically diverse anuran species, Xenopus laevis and Lithobates (Rana) sylvaticus, along a gradient of non‐lethal ...
Kourtnie Whitfield, Erica J. Crespi
wiley   +1 more source

Earliest ciliary swimming effects vertical transport of planktonic embryos in turbulence and shear flow [PDF]

, 2011
Kathryn A. McDonald
openalex   +1 more source

Enigmatic Nodal and Lefty gene repertoire discrepancy: Latent evolutionary history revealed by vertebrate‐wide phylogeny

Developmental Dynamics, EarlyView.
Abstract Homology in vertebrate body plans is traditionally ascribed to the high‐level conservation of regulatory components within the genetic programs governing them, particularly during the “phylotypic stage.” However, advancements in embryology and molecular phylogeny have unveiled the dynamic nature of gene repertoires responsible for early ...
Shigehiro Kuraku
wiley   +1 more source

Molecular anatomy of emerging Xenopus left–right organizer at successive developmental stages

Developmental Dynamics, EarlyView.
Abstract Background Vertebrate left–right symmetry breaking is preceded by formation of left–right organizer. In Amphibian, this structure is formed by gastrocoel roof plate, which emerges from superficial suprablastoporal cells. GRP is subdivided into medial area, which generates leftward flow by rotating monocilia and lateral Nodal1 expressing areas,
Natalia Petri, Alexandra Vetrova, Nikoloz Tsikolia, Stanislav Kremnyov   +3 more
wiley   +1 more source

An ANN-PSO approach for mixed convection flow in an inclined tube with ciliary motion of Jeffrey six constant fluid

, 2023
Muhammad Naeem Aslam, Aqila Shaheen, Arshad Riaz, Salha Alshaikey, Nadeem Shaukat, Muhammad Waheed Aslam, Taseer Muhammad   +6 more
openalex   +1 more source

BMP4 regulates asymmetric Pkd2 distribution in mouse nodal immotile cilia and ciliary mechanosensing required for left–right determination

Developmental Dynamics, EarlyView.
Abstract Background Mouse nodal immotile cilia mechanically sense the bending direction for left–right (L–R) determination and activate the left‐side‐specific signaling cascade, leading to increased Nodal activity. Asymmetric distribution of Pkd2, a crucial channel for L–R determination, on immotile cilia has been reported recently. However, the causal
Takanobu A. Katoh, Tim Lange, Yoshiro Nakajima, Kenta Yashiro, Yasushi Okada, Hiroshi Hamada   +5 more
wiley   +1 more source

The Aquaporin‐4 Expression and Localization in the Olfactory Epithelium Modulate the Odorant‐Evoked Responses and Olfactory‐Driven Behavior

Glia, EarlyView.
ABSTRACT Aquaporin‐4 (AQP4) is a water‐selective channel expressed in glial cells throughout the central nervous system (CNS). It serves as the primary water channel in the neuropil and plays roles in physiological functions, including regulating water homeostasis by adjusting cell volume and modulating neuronal activity. Different isoforms of AQP4 are
Donatella Lobraico, Pasqua Abbrescia, Maria Grazia Fioriello, Barbara Barile, Claudia Palazzo, Onofrio Valente, Grazia Paola Nicchia, Michele Dibattista, Antonio Frigeri   +8 more
wiley   +1 more source

Thermal dynamics assessment for multi-phase flow analysis with motile cilia and electric double layer effects: Application of Levenberg–Marquardt backpropagation NNs

Case Studies in Thermal Engineering
Ciliary movement holds substantial importance in the realm of biomedical research. Disorders arising from impaired ciliary motion, such as primary ciliary dyskinesia and specific respiratory ailments, underscore the critical need to investigate both the ...
Nidhal Ben Khedher, Nouman Ijaz, Sami Dhahbi, Kamal Barghout, Nidal Abu-Libdeh, Ahmad Zeeshan   +5 more
doaj  

Identification of a wide spectrum of ciliary gene mutations in nonsyndromic biliary atresia patients implicates ciliary dysfunction as a novel disease mechanism

EBioMedicine, 2021
Background: Biliary atresia (BA) is the most common obstructive cholangiopathy in neonates, often progressing to end-stage cirrhosis. BA pathogenesis is believed to be multifactorial, but the genetic contribution, especially for nonsyndromic BA (common ...
Wai-Yee Lam, Clara Sze-Man Tang, Man-Ting So, Haibing Yue, Jacob Shujui Hsu, Patrick Ho-Yu Chung, John M. Nicholls, Fanny Yeung, Chun-Wai Davy Lee, Diem Ngoc Ngo, Pham Anh Hoa Nguyen, Hannah M. Mitchison, Dagan Jenkins, Christopher O'Callaghan, Maria-Mercè Garcia-Barceló, So-Lun Lee, Pak-Chung Sham, Vincent Chi-Hang Lui, Paul Kwong-Hang Tam   +18 more
doaj