Results 61 to 70 of about 365,638 (279)

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Impact of implants number and attachment type on the peri-implant stresses and retention of palateless implant-retained overdenture

Indian Journal of Dental Research, 2020
Objectives: To evaluate the impact of implants number and attachments type on the peri-implant stresses and retention of maxillary palateless implant-supported overdenture. Materials and Methods: Four edentulous maxillary educational acrylic resin models
Salah A Hegazy, Nesreen El Mekawy, Radwa M K Emera   +2 more
doaj   +1 more source

On the location of the surface-attached globule phase in collapsing polymers [PDF]

Journal of Physics A: Mathematical and Theoretical, 2007
We investigate the existence and location of the surface phase known as the "Surface-Attached Globule" (SAG) conjectured previously to exist in lattice models of three-dimensional polymers when they are attached to a wall that has a short range potential.
Owczarek, A. L., Rechnitzer, A., Krawczyk, J., Prellberg, T.   +3 more
openaire   +3 more sources

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Comparison between Two Different Attachment Caps Used in Comparison between Two Different Attachment Caps Used in Locator Attachments of Implant supported Overdentures (In-Vitro Locator Attachments of Implant supported Overdentures (In-Vitro Study)

Future Dental Journal, 2022
Purpose: To compare different retentive cap material used in LOCATOR attachments, namely the nylon retentive cap versus PEEK retentive caps, and measure the loss of retention over a period of two years, through 2880 cycles of insertion and removal. Materials and methods: Two implants 3.8mm x 10.5mm were inserted into a clear epoxy resin cast, through a
Hossam Haridy, Hebatallah ElAfandy, Mohamed Abdallah, Ahmed Ossama   +3 more
openaire   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Clinical Application Of Locator Attachment In Mandibular Complete Denture Restoration

International Dental Journal
Introduction: The Locator attachment system for implant-supported overdentures combines endosseous implant technology with precision attachment mechanisms, offering a reliable solution for edentulous or partially edentulous patients. Case description: An
Junjie Lin, Anna Qiu, Runche Zhang, Rui He, Hongjie Huang, Yewen Zhu   +5 more
doaj   +1 more source

Evaluation of stress distribution of porous tantalum and solid titanium implant-assisted overdenture in the mandible: A finite element study

Dental Research Journal, 2021
Aims: The present study aimed to evaluate the stress distribution of porous tantalum implant and titanium solid implant assisted overdenture (IAO) in mandibular bone by utilizing three-dimensional (3D) finite element (FE) analysis. Materials and Methods:
Ayshin Akbarzadeh, Yasser Hemmati, Fariba Saleh-Saber   +2 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

In Vitro Study of Retentive Properties of Different Overdenture Attachment Systems On Straight and Divergent Dental Implants [PDF]

, 2017
Objectives: To evaluate the retention of Locator R-TX (ZEST Anchors LLC, Escondido, CA USA), Locator (ZEST Anchors LLC, Escondido, CA USA) and GPS (Implant Direct Sybron International, LLC, California, USA) dental implant attachment systems on parallel ...
Azzouz, Khalid Abdullaziz
core   +1 more source