Active clinical trials for "Peripheral Nervous System Diseases"

Diabetes mellitus type I is an increasing burden for more and younger children. Therapy should avoid long-term complications as macrovascular diseases and diabetic nephropathy, retinopathy and diabetic neuropathy (DN). There is considerable uncertainty about the prevalence of DN due to a lack of large epidemiological studies and consensus on diagnostic criteria. Nerve conduction velocity studies are regarded as the "gold standard" for investigating neuropathies. We plan a prospective study by investigating the peripheral nerve conduction velocity in a population of diabetic children. At the same time-points, we will do a neurological examination using the Young Score, a clinical score of peripheral neuropathy [10]. The results obtained will be related to other long-term vascular complications (nephropathy, retinopathy), glycaemic control, duration of diabetes, insulin dose regime, hours of sports/week, and BMI

The cross sectional area of posterior tibial nerve (PTN) is increased in diabetic patients with distal symmetric polyneuropathy (DSPN) as compared to diabetic patients without DSPN. This study aims to evaluate whether the cross sectional area of the Posterior Tibial Nerve (PTN) as measured by ultrasound is increased in patients with distal symmetric polyneuropathy (DSPN) as compared to diabetic patients without DSPN.

The purpose of this study is to determine whether administration of mammalian Omega 3 FA(fatty acid) with Vitamin D3 supplements would lower or prevent the risk of neuropathy due to chemotherapy.

This study aims to recruit a cohort of HIV patients with and without HIV-SN and to identify genetic risk factors for the development of HIV-SN and neuropathic pain. It also aims to more deeply phenotype the condition, using well validated questionnaires, and to identify any influence that early neurocognitive dysfunction may have on the reporting, diagnosis and treatment of neuropathic pain in the HIV population.

Purpose: The purpose of the study is to test a new way of measuring nerve damage in women with breast cancer receiving chemotherapy drug paclitaxel (Taxol).

This study aimed to evaluate the reference values for the short-term heart rate variable (HRV), estimate the performance of cardiovascular autonomic neuropathy (CAN) diagnostic tests in the absence of a gold standard, and assess CAN prevalence in our cross-sectional dataset.

A large-scale, community-based, cross-sectional study was conducted to explore the extent to which risk factors associated with diabetic cardiovascular autonomic neuropathy (DCAN) in general Chinese population. A total of more than 2000 diabetic participants were recruited by using multiple stages sampling (first cluster sampling and then simply sampling). Data involved in demographic information, clinical biomarkers such as glucose and lipids profiles, medical and therapy history were collected. Every participants was complete DNA extracted and genotyped. Diabetic Cardiovascular autonomic functions were measured by using short-term heart rate variability (HRV) to evaluate the outcome of DCAN. Univariate and multiple variables analysis have been performed to examine potential environmental and genetic risk factors of CAN. In addition, clinical risk model, simply screening model and nonlinear system model such as artificial neural network was created, respectively.

This study will investigate differences among people with focal dystonia (FD), complex regional pain syndrome (CRPS) and people who have both conditions to learn more about the cause of both disorders. Participants undergo the following procedures in five visits: Electroencephalography (EEG). Electrodes (metal discs) are placed on the scalp with an electrode cap, a paste or a glue-like substance. The spaces between the electrodes and the scalp are filled with a gel that conducts electrical activity. Brain waves are recorded while the subject lies quietly and sensory stimulation is applied to the thumb or finger. Magnetic resonance imaging (MRI). This test uses a magnetic field and radio waves to obtain images of body tissues and organs. The patient lies on a table that can slide in and out of the scanner, wearing earplugs to muffle loud knocking and thumping sounds that occur during the scanning process. The procedure lasts about 45 minutes, during which time the patient will be asked to lie still for up to 15 minutes at a time. Transcranial magnetic stimulation (TMS). An insulated wire coil is placed on the scalp and a brief electrical current is passed through the coil. The current induces a magnetic field that stimulates the brain. There may be a pulling sensation on the skin under the coil and a twitch in muscles of the face, arm or leg. During the stimulation, subjects may be asked to keep their hands relaxed or to contract certain muscles. Peripheral electrical stimulation. In two experiments, TMS is combined with peripheral electrical stimulation, similar to what is used in nerve conduction studies, to the median nerve at the wrist. There may be muscle twitching. Surface electromyography. For TMS tests and peripheral electrical stimulation, electrodes are filled with a conductive gel and taped to the skin to record the electrical activity of three muscles on the right hand. Needle EMG. A needle is inserted into a muscle to record the electrical activity. Nerve conduction studies. A probe is placed on the skin to deliver a small electrical stimulus, and wires are taped to the skin record the nerve impulses. These studies measure the speed with which nerves conduct electrical impulses and the strength of the connection between the nerve and the muscles. Skin biopsy. Two sites are biopsied. A local anesthetic is given to numb the area and a 1/4-inch piece of skin is removed with a special tool. JVP domes. Subjects are tested for their ability to discriminate sensory stimuli in the affected region and on the other side of it. They are asked to discriminate between stamps with grooves of different widths that are applied to the hands or feet.

This is a case-controlled study using an innovative, non-invasive, FDA approved technology to measure the autonomic nervous system. Detection of unsuspected DPN or ANS dysfunction may allow physicians to re-assess current treatment and develop new dietary or pharmacological strategies. This also is an immense public health concern since there are currently 18 million diabetics in the United States and 220 million worldwide.

The investigators propose to explore the hypothesis that vibrotactile channels for indicating spatial orientation can be exploited as a sensory prosthesis. The specific research applications will be used for guiding visual orientation, to provide alternative feedback to vision and vestibular signals for controlling balance, and for directional and lateralisation cueing in patients with neglect syndromes. The programme will study whether vibrotactile feedback improves performance and also if it speeds rehabilitation when used as an adjunct to conventional therapy.