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Sex determination by Ct -scan analysis of the mastoid bone: A cross-sectional study.
Heliyon
July 2024
Department of Forensic Medicine, Taher Sfar University Hospital of Mahdia, Tunisia.
The mastoid bone, situated at the base of the skull and characterized by its compact structure in the petrous portion, being among the slowest-growing bones, has gained recognition as a valuable anthropological tool for sex determination. Thus, we have proposed to assess the reliability of the mastoid process in sex determination in a Tunisian population using CT-scan analysis. A cross-sectional study was conducted.
View Article and Find Full Text PDFInvestigating the impact of diameters and thread designs on the Biomechanics of short implants placed in D4 bone: a 3D finite element analysis.
BMC Oral Health
September 2023
Department of Restorative Dentistry & Endodontics, Faculty of Dentistry, University of Puthisastra, 12211, Phnom Penh, Cambodia.
Background: Dental implants emerge as a dependable and efficacious alternative for patients experiencing partial or complete tooth loss. The stability of these implants is influenced by surface topography and macro-level design. In cases where the height of the maxillary posterior region is diminished, employing short implants can prove advantageous.
View Article and Find Full Text PDFUtility of the avian sub-acute dietary toxicity test in ecological risk assessment and a path forward to reduce animal use.
Integr Environ Assess Manag
November 2022
BASF Corporation, Research Triangle Park, North Carolina, USA.
The United States Environmental Protection Agency (USEPA) has long required both avian sub-acute dietary and acute oral studies to inform risk assessments for pesticides. Recently, the USEPA collaborated with People for the Ethical Treatment of Animals to determine whether the results of the acute oral avian toxicity test or the sub-acute dietary toxicity test consistently generated the greatest risk predictions in USEPA tier 1 assessments for pesticides first registered between 1998 and 2017. Their study concluded that in 99% of the cases, risk conclusions were driven by the acute oral study (OPPTS 850.
View Article and Find Full Text PDFThe Extended Amphibian Metamorphosis Assay: A Thyroid-Specific and Less Animal-Intensive Alternative to the Larval Amphibian Growth and Development Assay.
Environ Toxicol Chem
August 2021
Bayer AG, Research and Development, Crop Science, Environmental Safety, Monheim am Rhein, Germany.
The amphibian metamorphosis assay (AMA; US Environmental Protection Agency [USEPA] test guideline 890.1100 and Organisation for Economic Co-Operation and Development test guideline 231) has been used for more than a decade to assess the potential thyroid-mediated endocrine activity of chemicals. In 2013, in the context of the Endocrine Disruptor Screening Program of the USEPA, a Scientific Advisory Panel reviewed the results from 18 studies and recommended changes to the AMA test guideline, including a modification to a fixed-stage design rather than a fixed-time (i.
View Article and Find Full Text PDFEvaluation of a multiplexed, multispecies nuclear receptor assay for chemical hazard assessment.
Toxicol In Vitro
April 2021
Attagene, Inc., 7030 Kit Creek Rd, Morrisville, NC 27560, United States of America.
Sensitivity to potential endocrine disrupting chemicals in the environment varies across species and is influenced by sequence conservation of their nuclear receptor targets. Here, we evaluated a multiplexed, in vitro assay testing receptors relevant to endocrine and metabolic disruption from five species. The TRANS-FACTORIAL™ system of human nuclear receptors was modified to include additional species: mouse (Mus musculus), frog (Xenopus laevis), zebrafish (Danio rerio), chicken (Gallus gallus), and turtle (Chrysemys picta).
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