A5023168222- Nitric Oxide and Endothelin Effects
- Glaucoma and retinal disorders
- Retinal Development and Disorders
- Eicosanoids and Hypertension Pharmacology
- Retinal Diseases and Treatments
- Renin-Angiotensin System Studies
- Traumatic Brain Injury and Neurovascular Disturbances
- Animal Ecology and Behavior Studies
- Film in Education and Therapy
- Cardiovascular, Neuropeptides, and Oxidative Stress Research
- Electron Spin Resonance Studies
- Neuroscience and Neuropharmacology Research
- Biochemical effects in animals
- Neuropeptides and Animal Physiology
- Anesthesia and Neurotoxicity Research
- Bacterial Infections and Vaccines
- Photoreceptor and optogenetics research
- Heart Rate Variability and Autonomic Control
- Axon Guidance and Neuronal Signaling
- Regulation of Appetite and Obesity
- Neonatal and fetal brain pathology
- Yersinia bacterium, plague, ectoparasites research
- Trigeminal Neuralgia and Treatments
- Comparative Animal Anatomy Studies
- Facial Nerve Paralysis Treatment and Research
Nova Southeastern University
2000-2024
University of Tennessee at Knoxville
1998-2005
University of Louisiana at Monroe
2005
University of Tennessee Health Science Center
1996-2001
Southern College of Optometry
1998
Ducks Unlimited
1998
Christian Brothers University
1996
Orbital and choroidal blood vessels in mammals are known to receive a parasympathetic innervation from the pterygopalatine ganglion, which appears utilize vasoactive intestinal polypeptide (VIP) nitric oxide (NO) increase flow. The present studies were undertaken elucidate anatomical neurotransmitter organization of ganglion input orbital pigeons. Single- or double-label immunohistochemistry employed on paraformaldehyde-fixed cryostat sections pigeon eye surrounding tissue localize 1) VIP+...
Abstract Electrical stimulation in pigeons of the input from medial subdivision nucleus Edinger-Westphal (EWM) to choroidal neurons ipsilateral ciliary ganglion, which themselves have blood vessels eye, increases flow (ChBF). Since EWM receives contralateral suprachiasmatic (SCN), turn retinal input, present study sought determine if activation SCN by microstimulation or illumination eye would also yield ChBF that same eye. Using laser Doppler flowmetry (LDF) measure ChBF, we found...
We sought to determine if choroidal and outer retinal deterioration occur with age in pigeons, as they do other species, investigated the relationship between age-related changes. In 64 pigeons ranging over pigeon lifespan (0.5-20 years), we measured some or all among following parameters: blood flow (ChBF) by laser Doppler flowmetry, thickness choriocapillary vessel abundance LM histology, endothelial cell transport specializations EM acuity behavioral methods, degenerating photoreceptor...
Choroidal vessels compensate for changes in systemic blood pressure (BP) so that choroidal flow (ChBF) remains stable over a BP range of approximately 40 mm Hg above and below basal. Because the presumed importance ChBF regulation maintenance retinal health, we investigated if compensation fluctuation pigeons fails with age.Transcleral laser Doppler flowmetry was used to measure during spontaneous anesthetized ranging age from 0.5 17 years (pigeons can live 20 captivity).ChBF <8-year-old...
The avian ciliary ganglion (CG) controls choroidal blood flow by its neurons, and pupil constriction accommodation neurons. It was previously reported that both neurons label positively for NADPH diaphorase (NADPHd), a marker nitric oxide synthase (NOS). To assess if this labeling is preganglionic or postganglionic to determine it attributable neuronal NOS (nNOS), we studied pigeon CG using NADPHd histochemistry nNOS immunohistochemistry (IHC). Short-duration staining times yielded intense...
The incidence of facial nerve paralysis is approximately 30 per 100,000 persons annually. Although it often idiopathic, as in Bell's palsy, can also result from infections, trauma, or neoplasms. Facial may present with partial total paresis, lagophthalmos, denervation the lacrimal gland, and other ocular abnormalities. While dry eye a commonly expected outcome injury, some patients paradoxically experience epiphora hyperlacrimation. In this review, we examine phenomenon its mechanisms...
We have observed two starkly contradictory notions regarding the sympathetic influence on salivary outflow in discussions with our students. Most of them believe that nerves decrease salivation and are antagonistic to parasympathetic nerves. Some students, however, show awareness cooperative stimulatory action both types autonomic fibers. found a similar dichotomy descriptions effect secretion main glands their inconsistent illustrations Anatomy/Physiology textbooks. investigated historical...
Orbital and choroidal blood vessels in mammals are known to receive a parasympathetic innervation from the pterygopalatine ganglion, which appears utilize vasoactive intestinal polypeptide (VIP) nitric oxide (NO) increase flow. The present studies were undertaken elucidate anatomical neurotransmitter organization of ganglion input orbital pigeons. Single- or double-label immunohistochemistry employed on paraformaldehyde-fixed cryostat sections pigeon eye surrounding tissue localize 1) VIP+...