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Author: admin | 21.03.2014 | Category: Tinnitus Causes And Treatments

The Heart of the Matter: What Does America Really Know about Coronary Artery Disease Treatments? We have invented, optimized, and tested in animal experiments a magnetic injection system that can safely deliver therapeutics to the inner and middle ear. The inner ear is behind the blood-labyrinth barrier, thus drugs taken orally or injected systemically do not elute out of inner-ear blood vessels to reach inner ear tissue.
In this talk I will summarize how our magnetic system works, compare it to prior results (e.g.
Tinnitus, ringing in the ears, is a symptom of every known ear pathology and several others that are not even directly ear related. There are thousands of tinnitus treatments or tinnitus remedies that may temporarily reduce the tinnitus symptoms; we have no known cures for tinnitus.
There is no single hearing aid that is better than another, when it comes to providing tinnitus relief.
The quality of the hearing professional is more important than the brand of the hearing aid. Dear Malik…If you reside in the USA, most hearing aid dispensers, will evaluate your hearing, for free (and hopefully your tinnitus).
They might be able to point you toward some financial help VIA dept of Vocational rehab, or the lions club, Jewish social services, etc.
A wealth of anecdotal, empirical, and double-blind, placebo-controlled data exists on medicines that may have a beneficial role in the management of patients with tinnitus.
More than 70 medicinal options are used to treat tinnitus, ranging from such alternative therapies as Gingko biloba, niacin, and melatonin to more conventional therapies such as lidocaine, carbamazepine, and alprazolam (Xanax; Table 1). Glutamate and related excitatory amino acids, such as aspartate, are postulated to be among the most important afferent neurotransmitters in the cochlea and also account for most of the excitatory synaptic activity in the mammalian central nervous system. Glutamatergic transmission is associated with the well-established phenomenon of excitotoxicity (Fig.
The toxic effects of glutamate and other agonists are well documented [6-9]; however, only one study has demonstrated a release of glutamate into the extracellular fluid in response to loud noise [10]. Experimental work has demonstrated that monosodium L-glutamate administered to neonatal rats is toxic to the auditory system, producing a high-frequency hearing loss [6]. Contrary results from another study in our laboratory demonstrated that 2,3-aminophosphonavaleric acid, a specific NMDA antagonist, potentiated noise-induced hearing loss. Some reports have suggested that steroids may be harmful to the inner ear [21, 22]; consequently, our laboratory initiated a study to investigate the effects of transtympanic steroids on cochlear blood flow, auditory sensitivity, and histology. Antioxidants are a class of medications whose primary action is to reduce the deleterious effects of oxygen on biomolecules. Experimentally and clinically, ROM generation occurs through ischemia-reperfusion or prolonged hypoperfusion, such as is seen in myocardial infarction, cerebrovascular accidents, and possibly sudden sensorineural hearing loss. Other investigators have found similar mechanisms underlying ototoxicity secondary to other compounds.
Many alternative therapeutic options are available, including grape seed extract from red wine and pine bark extract, both of which are excellent antioxidants. Use of the information from basic scientific studies permits the application to clinical medicine. Henry Ford Health System, Department of Otolaryngology-Head and Neck Surgery, Tinnitus Clinic, W. This work was presented at the International Tinnitus Forum, September 12, 1998, San Antonio, TX. From Invisible Hearing Aids to Behind the Ear Styles, we fit the hearing aids to match your lifestyle and needs. Learn about the causes of tinnitus treatment options we offer here at Hearing Rehab Center. These devices are meant to be used either with or without hearing aids depending on your hearing needs and can include phones, alarm clocks and wireless TV systems. Our main goal at Hearing Rehab Center is to help people improve their lives through better hearing. Carly originally grew up in Charlestown, West Virginia and moved to Colorado almost 10 years ago. In contrast to prior magnetic systems, which can only pull-on (attract) magnetic nanoparticles and so would have to pull through the width of the human head in order to delivery nano-therapy into the middle or inner ear, our system can push (it can magnetically inject). It is thought that drugs delivered intra-tympanically into the middle ear also do not cross the oval window membranes sufficiently to effectively treat inner ear diseases. Without a doubt, the most broad spectrum and most common relief or treatment for tinnitus comes from wearing a hearing aid that compensates for the hearing loss and ear ringing that caused the inner ear problems. That is first of all assuming that your tinnitus therapy can be relieved by wearing a hearing aid.
I always experience a loud noise or ringings in my hear,and due to my poor background,i have not yet got a potential hearing test and treatment. Glutamate Antagonists, Steroids, and Antioxidants as Therapeutic Options for Hearing Loss and Tinnitus and the Use of an Inner Ear Drug Delivery System.
Tinnitus is a symptom that affects between 40 and 45 million Americans alone; this represents approximately 14% of the US population.
Some of these medications have survived stringent doubleblind, placebo-controlled studies, whereas others have been used anecdotally. This figure represents a glutamatergic synapse and demonstrates the biochemical activity in response to excitotoxicity. The excitotoxic effects of glutamate in response to noise could, in part, be the result of increased release or inadequate removal of glutamate, primarily due to breakdown of recycling mechanisms. One possible explanation for these divergent results is that by blocking a specific NMDA channel, glutamate may have overstimulated other NMDA and non-NMDA channels, leading to additional acoustic trauma (unpublished data). The activity of steroids varies widely but primarily affects carbohydrate, lipid, and protein metabolism by interacting with specific protein receptors in target tissues to regulate the expression of regulatory genes.
Results demonstrated a significant increase in cochlear blood flow within 30 seconds of steroid application to a mean of 29%. However, the blood-labyrinthine barrier [24, 25] raises a valid concern of achieving adequate inner ear drug levels. Many antioxidant mechanisms exist but primarily include the scavenging or blocking of ROMs. They include superoxide dismutase (SOD) [30], glutathione peroxidase [31], glutathione transferases [32], and catalase. An increasing body of evidence implicates ROMs in the damage associated with cochlear ischemia, noise trauma, and ototoxicity. Additionally a group of nutritional supplements known as mitochondrial metabolites enhances mitochondrial function and energy output. All subjects were supplemented with a placebo or one of the two nutritional compounds for 6 weeks.

Over the last 11 months, we have treated nine patients using a roundwindow microcatheter device (IntraEAR, Denver, CO) to deliver medications to the inner ear.
Many of these management alternatives are directed at improving the symptomatology and helping patients to cope with their problem. Ganong AH, Cotman CWo Kynurenic acid and quinolinic acid act at NMDA receptors in the rat hippocampus.
Halliwell B, Gutteridge JM, Cross CEo Free radicals, antioxidants, and human disease: Where are we now? Let others know what you thought of your hearing care experience at Hearing Rehab Center or see what other patients are saying.
Tomlin earned his Doctorate of Audiology degree from the University of Texas at Dallas in 2012 and joined Hearing Rehab Center in March 2013. This allows us to use reasonable (safe, below FDA limits) magnetic fields over a short distance to delivery therapies into the middle or inner ear. We have shown in preliminary rat experiments that our magnetic push forces can safely drive drug coated nanoparticles through the oval window membranes from the middle into the inner ear (without effecting hearing or causing other measurable side effects). Without a doubt, the biggest of the tinnitus causes in today’s society is loud noise. Right now,am still living with d problem,but i want to know if i can still go for the test and treatment after my graduation from d College and i start working,considering that the problem is a long one. A detailed review by Shulman [1] carefully evaluated neuroprotective therapies for the control of tinnitus.
Excessive stimulation of glutamate receptors can lead to neuronal injury and death, by either direct or indirect activation of receptors on the postsynaptic neuron, leading to an opening of gated channels that allows for an influx of sodium, potassium, and calcium. Eventually, this condition may result in toxic cellular events leading to neuronal degeneration and cochlear damage, perhaps resulting in tinnitus. Cochlear hair cells, which are presynaptic to afferent fibers of the spiral ganglion, are spared [12, 17]. Clinicians in Austria have treated patients with Caroverine, a specific glutamate antagonist, and have observed significant improvement in the patients' tinnitus [20]. This increase in blood flow persisted and did not return to baseline for at least 1 hour after drug delivery. Recent studies have demonstrated significant variation of inner ear levels of several steroid preparations using oral, intravenous, and transtympanic routes.
ROMs are species that contain an unpaired number of electrons, rendering them chemically reactive and extremely toxic to subcellular and cellular structures. Additionally, a variety of small molecules in the human diet are required for antioxidant mechanisms.
Specifically, localized inner ear ischemia and hypoxia induced via selectively clamping the anteroinferior cerebellar artery normally abolishes the CAP within seconds, and the effect becomes permanent after 8 minutes of ischemia. One such compound is a supplement (patent pending) containing acetyl-L-carnitine, -α-lipoic acid, glutathione, and coenzyme Q10. Auditory brainstem response testing was used to obtain baseline during and after treatment auditory thresholds.
It is imperative that we, as physicians, maintain our patients' interest and health as our primary focus and adhere to our Hippocratic Oath to "do no harm." Having said this, our offering hope, education, care, and treatment is vitally important. Neuroprotective drug therapy: A medical and pharmacological treatment for tinnitus control. Glutamate neurotoxicity in the developing rat cochlea is antagonized by kynurenic acid and MK-801.
Electrophysiological evidence for the presence of NMDA receptors in the guinea pig cochlea. Glutamate neurotoxicity in the cochlea: A possible consequence of ischemic or anoxic conditions occurring in aging. Stimulus induced release of endogenous amino acids from skin containing the lateral organ in Xenopus laevis.
Structureactivity relationships in the development of excitatory amino acid receptor antagonists and competitive antagonist. Kainate and NMDA toxicity for cultured developing and adult rat spiral ganglion neurons: Further evidence for a glutamatergic excitatory neurotransmission at the inner hair cell synapse.
Kynurenic acid and y-D-glutamylaminomethylsulfonic acid suppress the compound action potential of the auditory nerve. NMDA induced oscillations in excitatory afferent neurotransmission in the guinea pig cochlea. Comparative action soft quisqualate and NMDA, excitatory amino acid antagonists on guinea pig cochlear potentials. Actions of putative neurotransmitters and other relevant compounds on Xenopus laevis lateral line. Glutamate neurotoxicity in the developing rat cochlea: Physiological and morphological approaches.
Kynurenic acid inhibits synaptic and acidic amino acid induced responses in the rat hippocampus and spinal cord.
Hydrocortisone applied into the round window niche causes electrophysiological dysfunction of the inner ear. Effect of transtympanic injection of steroids on cochlear blood flow, auditory sensitivity, and histology in the guinea pig. Anorexiareoxygenation-induced, neutrophil-mediated endothelial cell injury: Role of elastase.
The glutathione peroxidase reaction: Molecular basis of the antioxidant function of selenium in mammals.
Purification of a new glutathione S-transferase (transferase me) from human liver having high activity with benzol (alpha) pyrene-4,5-oxide. The protective effects of Allopurinol and superoxide dismutase on noise induced cochlear damage.
Sulfhydryl compounds and antioxidants inhibit cytotoxicity to outer hair cells of gentamicin. Direct detection of ototoxicant-induced reactive oxygen species generation in cochlear explants.
Effects of superoxide dismutase and U74389G on acute trimethyltinchloride induced cochlear dysfunction. He completed his fourth year externship at West Coast Hearing & Balance Center in Thousand Oaks, California, where he specialized in tinnitus and vestibular disorders. She has a wonderful little family of three and, is raising a very rambunctious little boy named Murphy. Using steroid-coated nano-particles we have shown therapeutic effect for treatment of acute tinnitus and noise-induced hearing loss. This alters ionic and water homeostasis and results in dendritic and cellular edema, activation of arachidonic acid, diacyl glycerol, and many other internal control mechanisms, ultimately leading to the generation of reactive oxygen metabolites (ROMs), lipid peroxidation and, finally, cell death [4,5].

The challenge of testing glutamate excitotoxicity contributions to noise-induced hearing loss and tinnitus is complicated by evidence that several types of glutamate receptors exist [11]. The selectivity of this toxicity is similar to glutamate excitotoxicity, which specifically affects neurons postsynaptic to glutamatergic terminals.
Caroverine is not approved for use in the United States; however, magnesium sulfate (which is available in the United States) is approved for human use, is a potent glutamate antagonist, and is the medication used in one patient with severe tinnitus, reported briefly at the end of this study. The results demonstrated significantly higher perilymphatic drug levels using the transtympanic route as compared to other methodology [26]. Vitamin E (tocopherol), an excellent example, functions to trap radicals in lipid membranes and has been used clinically in a variety of oxidative stress-induced diseases [33]. When subjects were pretreated with allopurinol or SOD-polyethylene glycol followed by ischemia, CAP thresholds were maintained [34]. Direct ROM-induced cochlear injury after cisplatin administration has been demonstrated in guinea pigs [40].
The purpose of a recent study was to describe the effects of two mitochondrial metabolites-α-lipoic acid and acetyl-L-carnitine-on the preservation of age-related hearing loss. He worked as a hearing aid technician during his time in school and has more than seven years of experience working with many different types of hearing aids. Before coming to the Hearing Rehab Center Carly worked as a caregiver in a memory care facility for 4 years.
We have also demonstrated that magnetic pushing can drive nano-particles through the tympanic membrane, providing a non-invasive alternative to syringe or laser intra-tympanic injection. Thus, in those industrialized nations, approximately 90 million may experience tinnitus to some degree. The ionotropic receptors mediating the depolarizing action of glutamate have been named after their most potent agonists and can be distinguished by their pharmacological and electrophysiological properties [12, 13].
This effect is influenced further by the fact that the mechanism for removing or recycling glutamate is not efficient enough when the neurotransmitter is released in excess, particularly after neuronal damage, such as that caused by ischemia, anoxia, or acoustic trauma. Steroids represent a scientifically proven therapeutic option for many inner ear disorders and their use, although controversial, is not likely to cause additional harm.
They are produced in vivo during mitochondrial respiration and via autooxidation of chemical and biological molecules.
Additionally, these experiments were extended to study noise-induced hearing loss, which has been shown to cause vascular perturbations.
This group also has demonstrated protection from trimethyltinchloride-induced ototoxicity with SOD [41]. Results showed an age-associated threshold deterioration of 3-7 dB in the control group over the 6-week study. Also important is to realize that in the management and care of patients with chronic disorders having more than one etiology, one treatment is not likely to work for everyone. Larry is currently earning his Doctoral degree in Audiology from Salus University in Elkins Park, Pennsylvania.
She loves being able to serve those in our community and make a difference in people’s lives.
85 dB is about the level of sound coming from a kitchen blender at six feet, when it is crushing ice. One to two percent of the population experiences debilitating tinnitus, severely limiting the quality of life of affected individuals. Generally, at least three receptor types are accepted: those selectively activated by N-methyl-D-aspartate (NMDA), quisqualate, and kainate, respectiVely. Earlier work in our laboratory studied the effects of glutamate and noise trauma using a broad-spectrum glutamate receptor antagonist, kynurenic acid (KYNA).
ROMs also are environmental contaminants and can be formed from ionizing and ultraviolet radiation. Both subjects treated with acetyl-L-carnitine and those treated with α-lipoic acid experienced a statistically significant overall improvement in auditory thresholds during the same period. Thus, we physicians must have the willingness to keep an open mind, to be dedicated to scientific study, to keep our patients interest as our primary focus, and to offer realistic help.
He loves educating and counseling patients regarding their hearing loss because he too has hearing loss and wear hearing aids.
All too often, the response from well-trained medical professionals is, "Learn to live with it" or "There is no cure." Although the author does not dispute that currently no cure exists, I contend that help is available. KYNA is a tryptophan metabolite and has selective activity against NMDA, kainate, and quisqualate receptors, respectively, in the central nervous system [13, 18, 19]. Typically, the effects of these molecules and their activation is deleterious to the cell and tissue involved. These findings support the notion that a decrease in mitochondrial function with age can be slowed by treatment with mitochondrial metabolites [42]. Additionally, further studies, including those that are double-blinded, placebo-controlled, institutional review board-approved, must be performed, but this requires time, perseverance, and funding.
This article discusses the use of glutamate antagonists, steroids, and antioxidants for the management of hearing loss and tinnitus.
Some of these molecules have the ability to upregulate adhesion receptors, to increase vascular permeability, to damage DNA and tissues, to impair endothelial function [28, 29], and possibly to contribute to hearing loss and, ultimately, tinnitus. Potentially, this outcome may offer some help to patients with sensorineural hearing loss and, possibly, tinnitus; however, additional studies clearly are required.
So sound equal to an average lawn mower (about 105 dB) would be damaging at 30 minutes in a 24-hour period. Additionally, the results of using an inner ear drug delivery system on nine patients with a variety of inner ear disorders are reviewed briefly. Baseline compound action potentials (CAP) and cochlear microphonic thresholds were recorded. Head room would be measured by subtracting the amount of gain needed to address the loss from either the output limit or the feedback limit of the hearing aid at the frequency in question. Furthermore, electrophysiological data suggest the presence of ionotropic receptors of both NMDA and non-NMDA subtypes in the cochlea [7,13-16]. Group 1 received a vehicle control (1.5 M NaCl) applied to the round-window membrane, followed by 110 dB SPL wide-band noise for 90 minutes.
If you are wearing headphones to listen to music and someone can hear and understand the music standing beside you, you are likely doing damage and will cause hearing problems. Most anything that causes small highs and lows in your blood pressure, will exacerbate your tinnitus. Group 2 received 5 mM KYNA followed by the same noise exposure, and group 3 received 5 mM KYNA alone, without noise.

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