Objective: To develop phonosurgery skills, surgical training of the actual larynx is essential. In our institution, the Japanese deer (Cervus Nippon aplodontids) larynx is used in phonosurgery training. This study aimed to examine the similarities and differences between the Japanese deer and human larynx and to demonstrate their utility in vocal surgery practice.
Methods: A comparative study was conducted using 30 Japanese deer larynges and 51 human donor larynges, evaluating the overall framework, dimensions, and angle of the thyroid cartilage, vocal cord length, and location of the arytenoid cartilage muscular process. The changes and movements of the vocal folds during contraction and relaxation of each internal laryngeal muscle were also visually analyzed.
Results: The larynx size of Japanese deer is intermediate between that of human males and females. The adduction and abduction of the vocal folds induced by contraction of the posterior and lateral cricoarytenoid muscles, as well as the extension of the vocal folds induced by contraction of the cricothyroid muscle, behaved in the same manner as in the human larynx.
Conclusion: The morphology of the Japanese deer larynx is similar to that of the human larynx, making it suitable for use in dissection and surgical practice. Owing to the recent animal damage problem and the popularity of gibier cuisine, large quantities of Japanese deer larynx are available at low prices. We believe that the Japanese deer larynx is the most appropriate animal for phonosurgery training so far.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.anl.2024.05.003 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Monkey-deer rodeo: exploring the mounting behaviours of Japanese macaques (Macaca fuscata) on Sika deer (Cervus nippon).
Primates
December 2024
Université de Strasbourg, IPHC, UMR7178, CNRS, Strasbourg, France.
Article Synopsis
- The study investigates the unusual mounting behavior of Japanese macaques towards Sika deer, contributing to our understanding of interspecies interactions.
- Using video data from two locations in Japan, researchers documented and analyzed 45 instances of macaque-deer interactions, revealing four primary activities—sexual, play, grooming, and resting—with resting being the most common.
- The study evaluates six hypotheses about the functions of these behaviors, finding significant differences in behavior duration across species and age, indicating a need for further research on the ecological and social implications of these interactions.
Diversity of piroplasma species in small rodents and ticks captured in suburbs of Gifu City, central Japan.
J Vet Med Sci
January 2025
Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan.
Article Synopsis
- Piroplasmas, like Babesia and Theileria, are protozoan parasites transmitted by ticks to warm-blooded animals, with some species capable of causing zoonotic infections in humans.
- This study collected wild rodents and ticks near Gifu City, Japan, from 2021 to 2023, using a technique called nested-PCR to identify specific piroplasma gene sequences.
- Results showed that B. microti was present in field mice, and related piroplasmas potentially harmful to humans were also found in ticks, indicating the distribution of these pathogens in the area.
The foraging strategies of sympatric ungulates with similar ecological niches are important for understanding ecological niche differentiation, resource utilization, competition, and coexistence and for understanding the ecological impacts on plant communities in the ecosystem. The behavior of the wapiti () and Siberian roe deer () foraging on Japanese yew () has affected its succession and renewal in the northeastern forests of China, which has become an urgent problem for the relevant departments. This study analyzed the foraging strategies of the wapiti and Siberian roe deer on Japanese yew from July 2021 to January 2024 using field investigations and infrared camera monitoring in the Muling National Nature Reserve, Heilongjiang Province, China.
View Article and Find Full Text PDFAdjusting susceptibilities of C57BL/6 mice to orthoflaviviruses for evaluation of antiviral drugs by altering the levels of interferon alpha/beta receptor function.
J Virol Methods
January 2025
Institute for Antiviral Research, Utah State University, 5600 Old Main Hill, Logan, UT 84321-5600, USA.
The purpose of this study was to optimize the infectivity of four different orthoflaviviruses in mice for evaluating antiviral drugs by using wild-type mice with intact interferon responses, type 1 interferon alpha/beta receptor knockout mice, or by injecting wild type C57BL/6 mice with varying doses of anti-type 1 interferon receptor antibody (MAR1-5A3) to optimize the infectivity and lethality. West Nile virus productively infected wild-type C57BL/6 mice to cause lethality, whereas Usutu virus required a complete absence of type 1 interferon receptor function. Deer tick virus (lineage 2 Powassan virus) and Japanese encephalitis viruses required a dampening of type 1 interferon responses by adjusting the doses of MAR1-5A3 antibody injections.
View Article and Find Full Text PDFQuantification of wildlife visits to pig farms via camera traps in Japan.
Prev Vet Med
November 2024
Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan. Electronic address:
Infectious diseases in livestock not only cause significant economic losses but also affect food security. Although wildlife may be involved in these infectious diseases by serving as reservoirs, research has primarily focused on livestock and related species. Moreover, while these species represent a potential threat in wildlife-borne infectious diseases, comprehensive surveys of the presence of various species are limited.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!