Active clinical trials for "Metabolic Diseases"

Metabolic diseases and mitochondrial disorders are caused by genetic mutation which lead to disruptions in energy producing pathways in our body. Enough energy or calories must be given in the diet to ensure normal growth and development. Currently, energy needs for patients with metabolic and mitochondrial diseases are not measured, but is estimated using a mathematical equation based on healthy children. This may lead to under feeding or overfeeding of calories, and has negative nutritional implications. The clinical standard for measuring energy needs is the use of indirect calorimeter.The indirect calorimeter takes individualized measurements for each patient and therefore will enable dietitians and clinicians to provide sufficient calories in the diet to better manage the disease and promote normal growth and development. We believe daily energy requirements will vary within metabolic diseases (Phenylketonuria) and mitochondrial disorders (mitochondrial fatty acid oxidation defect, POLG1 mutation etc.). The objective of this preliminary study is to measure resting energy expenditure in children living with metabolic and mitochondrial conditions and data obtained will be used to generate future hypothesis and will form a basis for future studies.

Analyzed iron status, HFE mutations and ethnicity for women in five primary care centers in the United States and Canada using de-identified data from the HEIRS study.

Approximately 66 million informal caregivers care for someone who is ill, disabled, or aged. These caregivers experience significant distress associated with caregiving, which may be particularly salient in the context of inherited conditions. Previous studies have not examined caregiving from a network perspective, nor have they considered how cognitive and emotional responses, such as caregivers worry for themselves and relatives acquiring the disease or guilt related to the genetic etiology of their child s illness, as possible stressors; the current project fills this literature gap. Caregiving processes may vary across type of illness and the life course. In illnesses that impact children, parents and grandparents may take on caregiving roles whereas in conditions that impact adults, spouses and adult children may provide care. Caregivers must adapt to the strain of caring for their affected relatives and this adaptation may differ depending on caregiver roles. The caregiver s support network may influence adaptation, impacting the health and well-being of patients, their caregivers, and other relatives. This project, comprised of 5 substudies, will examine social contexts surrounding families involved in caring for individuals with chronic inherited conditions from a relational perspective. Surveys and interviews will assess participants cognitions and emotions about the disease, caregiving burden and caregiving/support network systems. In addition, biomarkers will be considered in 2 substudies to examine how caregiving roles and expectations impact health among caregivers. As part of our current inquiry, we have developed an assessment tool aimed at understanding caregiver experiences related to dietary practices in the context of metabolic conditions. To evaluate the psychometric properties of this scale, we propose a fifth substudy under the current protocol. We aim to recruit at least 5550 participants through residential/daycare centers, advocacy groups, and the NIH Clinical Center. We will recruit formal caregivers, multiple biological and non-biological adult relatives of affected individuals and typically developing controls to construct and evaluate caregiving/support network systems. This project will use a social network framework to develop and adapt common measures of caregiving roles to evaluate burden, perceptual bias, and unmet expectations in caregiving. The psychometric properties of these new measures, characteristics of family caregiving and support networks, and how these network characteristics are associated with caregiving strain and well-being, including biomarkers of physical health, will be investigated. The moderating role of family members cognitions and emotions and disease context will be considered. Findings will guide future research to develop network-based interventions promoting positive adaptation to the presence of inherited conditions in families through improved social environments and coping skills.

One year prospective analysis of drug utilization and prescription point prevalence of medications in a pediatric tertiary care university medical center. Off-label use of medications in the study population will be also registered.

This is a Natural History study to characterize key aspects of the clinical course of late onset Lysosomal Acid Lipase (LAL) Deficiency/ Cholesteryl Ester Storage Disease (CESD).

This study offers evaluation and treatment of patients with a suspected connective tissue disorder. The protocol is not designed to test new treatments; rather, patients receive standard care. The study is designed to: 1) allow NICHD's staff to learn more about connective tissue disorders, 2) train physicians in the evaluation and treatment of these disorders; and 3) establish a pool of patients who may be eligible for other NICHD protocols for connective tissue disorders. (Participants in this protocol will not be required to join another study; the decision will be voluntary.) Patients of all ages with a suspected connective tissue disorder and their unaffected family members may be eligible for this study. Participants undergo diagnostic procedures that may include a medical history, physical examination, X-ray studies, eye examinations, and blood drawing, as well as other specialized tests, when needed. Additional tests may include: Blood test for DNA genetic analysis Skin biopsy: Removal of a small piece of tissue for microscopic examination. The area of skin selected for the biopsy is numbed and a small circle of skin, usually from the upper arm, is removed with a surgical cookie cutter-like instrument. Magnetic resonance imaging (MRI): This test uses a strong magnetic field and radio waves to show structural and chemical changes in tissues. The patient lies on a table that slides into a narrow cylinder containing a magnetic field. Ear plugs are worn to muffle loud knocking and thumping sounds that occur with electrical switching of the magnetic fields. Computed tomography (CT) scans: This test allows the doctor to view the organs inside the body in small sections. The patient lies in a doughnut-like machine. Scanning can be done from different angles, allowing a three dimensional picture of the part of the body being studied. It may be done with or without injection of a contrast material. Referral to appropriate sub-specialists when potential complications are found.

Glycogen, is the storage form of glucose. It is usually formed from sugar and stored in the liver. When tissues, such as muscle, need glucose for fuel the stored glycogen is converted into glucose with the help of enzymes produced in the body. Glycogen storage disease (GSD) refers to a group of conditions characterized by abnormal storage of glycogen due to the absence of particular enzymes needed in the process of storing and using glycogen. This study addresses the related metabolic abnormalities of glycogen storage disease (GSD). As patients with disorders of glycogen metabolism are followed it becomes apparent that the condition is much more complex than initially thought. Researchers believe that patients suffering from glycogen storage disorders should be followed and monitored for other heritable metabolic disorders. This study will attempt to determine the frequency of associated disorders in patients with GSD. In addition, the study will look at the current management of these patients to see if the prognosis and course of the disease is changed.

Because prevalence of glucose metabolism disorders is high in patients with coronary disease, the Oral Glucose Tolerance Test (OGTT) is recommended in all patients without diabetes after an acute coronary syndrome (ACS). However, there are some concerns about its performance in clinical practice. The aim of our study was to evaluate, after an acute coronary syndrome (ACS), the feasibility and efficacy of the OGTT in a cardiac rehabilitation (CR) center in comparison with its real application in the whole French population.

Methods of diagnostic and treatment of hormonal disorders in patients with chronic kidney disease (CKD) will be developed and implemented in real clinical practice. As a result of the project, new scientific data will be obtained on the relationship of hyperprolactinemia and impaired functioning of the pituitary-gonadal axis, changes in functioning of the renin-angiotensin-aldosterone system will be revealed, and the characteristics of the thyroid and parathyroid status in patients with CKD will be determined, including receiving renal replacement therapy (RRT) and after kidney transplantation, which will improve the efficiency of diagnosis and treatment of hormonal disorders in the early stages of the disease, reduce the direct financial costs of the diagnostic and treatment process primarily due to the optimization of hormonal studies and treatment of the revealed disorders, as well as will prevent the progression of CKD and the severity of the condition of this category of patients due to the development of hormonal dysfunctions.

The purpose of investigation is to assess the levels of metabolic factors (hydroxyvitamin D, homocysteine) between patients with vestibular dysfunction of peripheral origin (BPPV) and central origin (vestibular migraine). Also we will analyse another factors (such as anxiety and depression) and optimize therapeuthical approach accordingly with the data.