Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

20 January 2018 : Animal Research  

Neurotransmitters and Receptors Changes in Medial Nucleus of the Trapezoid Body (MNTB) of Early-Developmental Rats with Single-Side Deafness

Jinsheng Dai1ABCDEF, Jinfeng Liu1AFG*, Mo Zhou1BD, Wenjiao Wang2BD, Zhi-Qing David Xu2AF, Ningyu Wang1AFG

DOI: 10.12659/MSM.908432

Med Sci Monit 2018; 24: ANS397-404

Abstract

BACKGROUND: Congenital single-side deafness (SSD) affects sound localization even after cochlear implantation (CI) in some conditions. The medial nucleus of the trapezoid body (MNTB) plays an important role in binaural benefit and sound localization, but little is known about intrinsic molecular changes in MNTB with SSD. We aimed to observe changes in MNTB in early-developmental SSD rats, including the key neurotransmitters (GABA, Gly, Glu) and major receptors (GABAa-R/GABAb-R for GABA, Gly-R for Gly, and AMPA/NMDA for Glu).

MATERIAL AND METHODS: The model of early-developmental SSD was acquired by right cochlear ablation at P12 and confirmed by ABR. High-performance liquid chromatography fluorescence detection (HPLC-FLD) was performed to measure the levels of neurotransmitters in MNTB. The relative expression of neurotransmitter receptors was tested by quantitative real-time PCR analysis.

RESULTS: (1) The right MNTB of experimental rats had an increase in GABA, Gly, and Glu at 4 weeks after right cochlear ablation (P<0.05). (2) At 2 weeks, the left MNTB of experimental rats showed increases in GABAa-R, GABAb-R, Gly-R, and AMPA, while the right MNTB showed lower expression of NMDA (P<0.05). The higher receptors in left MNTB decreased to a level at which we found no difference at 1 week for GABAa-R and GABAb-R (P>0.05), and was even reversed for Gly-R and AMPA (P<0.05). (3) Gly level was significantly increased at 2 weeks bilaterally and continued to 4 weeks in the left MNTB (P<0.05).

CONCLUSIONS: Early-developmental SSD can lead to asymmetric distribution of neurotransmitters and receptors in MNTB, which can be the fundamental cause of defective sound localization after cochlear implantation.

Keywords: Hearing Loss, Unilateral, Neurotransmitter Agents, Receptors, Neurotransmitter, Sound Localization

Add Comment 0 Comments

Editorial

01 May 2024 : Editorial  

Editorial: First Regulatory Approval for Adoptive Cell Therapy with Autologous Tumor-Infiltrating Lymphocytes (TILs) – Lifileucel (Amtagvi)

Dinah V. Parums

DOI: 10.12659/MSM.944927

Med Sci Monit 2024; 30:e944927

In Press

Clinical Research  

Lipid Peroxidation, Reduced Glutathione, and Glutathione Peroxidase Levels in Intervertebral Discs of Patie...

Med Sci Monit In Press; DOI: 10.12659/MSM.944335  

0:00

Clinical Research  

Enhanced Recovery of Local Anesthesia in Pediatric Patients: The Impact of Photobiomodulation on Reversing ...

Med Sci Monit In Press; DOI: 10.12659/MSM.941928  

0:00

Clinical Research  

Comparative Efficacy of Micro-Needle-Knife Therapy and Acupuncture in Acute Ankle Sprains: A Randomized Con...

Med Sci Monit In Press; DOI: 10.12659/MSM.944157  

Clinical Research  

The Influence of Gestational Diabetes Mellitus on Maternal and Neonatal Outcomes: A Retrospective Study in ...

Med Sci Monit In Press; DOI: 10.12659/MSM.943644  

Most Viewed Current Articles

17 Jan 2024 : Review article  

Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron Variant

DOI :10.12659/MSM.942799

Med Sci Monit 2024; 30:e942799

0:00

14 Dec 2022 : Clinical Research  

Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase Levels

DOI :10.12659/MSM.937990

Med Sci Monit 2022; 28:e937990

0:00

16 May 2023 : Clinical Research  

Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...

DOI :10.12659/MSM.940387

Med Sci Monit 2023; 29:e940387

0:00

01 Jan 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

0:00

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750