Daniel Labbé

Background Almost every otorhinolaryngologist will be confronted with patients in need of palliative care. The development of comprehensive cancer centers in Germany strengthens the cooperation between otorhinolaryngologists and palliative care specialists for the benefit of patients with head and neck cancer.Objective The present article provides...

Conclusion: Nitric oxide synthase (NOS) II induction is a protective mechanism against age-related degeneration of the cochlea. Objectives: An induction of NOS II has been described in different inner ear pathologies. The objective was to examine the role of NOS II in age-related degeneration of the cochlea. Methods: The hearing ability in adu...

In order to clarify the developmental regulation of the eNOS activity in intestine by phosphorylation, we examined the immunohistochemical localizations of the eNOS phosphorylation sites at Ser(1177), Ser(116) and at Thr(495) in cells of the mouse enteric mucosa and myenteric plexus at E13.5, E14.5, E16.5, E18.5, E20.5 and P3. In addition, in cells...

Introduction: While there is an increasing demand for minimally invasive operative techniques in Ear, Nose and Throat surgery, these operations are difficult to learn for junior doctors and demanding to supervise for experienced surgeons. The motivation for this study was to integrate high-definition (HD) stereoscopic video monitoring in microscopi...

The protein kinase Akt (protein kinase B) can be activated by numerous growth factors via PI-3 kinase-generated phosphoinositides and is thought to have anti-apoptotic properties. Activated Akt/PKB boosts the activity of endothelial NO synthase (NOS III), which has been found in the key areas of the inner ear (e.g., hair cells and stria vascularis)...

To study the significance by analyzing the expression of angiopoietin-1 (Ang-1) and Angiopoietin-2 (Ang-2) in the tissues of squamous cell carcinoma (SCC) of the head and neck areas and in normal mucosa tissues. The expression of Ang-1 and Ang-2 in 45 tumor samples and 7 normal mucosa tissues were determined by the immunohistochemical method with a...

The aim of this study was to investigate the involvement of oxidative stress and apoptosis in an animal model of Meniere's disease. Endolymphatic hydrops (ELH) is generally accepted as the decisive histological characteristic of Meniere's disease. Closure of the endolymphatic duct (Kimura's method) was used to induce endolymphatic hydrops in guinea...

In the enteric nervous system, nitric oxide (NO) is regarded as an important messenger for the non-adrenergic and non-cholinergic neurotransmission. Synthesized mainly by the constitutive nitric oxide synthase (NOS) isoforms NOS I and NOS III, this molecule exerts prejunctional inhibitory effects in the submucosal plexus as well as relaxation of en...

Growth factors such as vascular endothelial growth factor (VEGF) exert their proliferative properties partly through activation of mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK1/2). Although both VEGF and inactive ERK could be detected in the inner ear of guinea pigs, under normal conditions activated ERK (phospho...