71 Clinical Trials for Various Conditions
To the best of the investigators knowledge, exhaustive characterization of the low and high abundant proteins and glyco-proteins of the Follicular Fluid (FF) has not yet been achieved. Such an analysis may provide critical molecular data on the role of the FF in oocyte maturation and may identify specific changes in the FF proteome of patients with gynecologic problems, such as Polycystic Ovary Syndrome (PCOS). Specific Aims 1. To perform a comprehensive analysis of normal human FF using sensitive mass spectrometry in combination with conventional approaches for proteomic evaluation and using HPLC and Western blot for glyco-proteomic analysis. 2. Characterize differential proteomic and glyco-proteomic patterns of the FF in normal women compared to lean and obese women with PCOS. 3. To supplement the differential proteomic and glyco-proteomic analysis with steroid hormone analysis in all FF samples.
The current study is a case control study involving comparisons of tissue interstitial fluid from breast cancer and adjacent non-cancerous tissue as well as that from benign breast lesion and its adjacent non-diseased tissue for a distinguishable breast cancer profile. The purpose of this research is to collect fresh breast nodule/cancer and surrounding non-cancerous tissue for proteomic studies of the interstitial fluid to identify a profile distinguishing breast cancer which will also permit future research on stored interstitial fluid, blood or tissue samples. Specific markers identified from interstitial fluid study will be investigated in blood samples to develop serum markers for breast cancer diagnosis and prognosis. Additionally, we will perform both prospective and retrospective research on breast cancer involving clinical, demographic, epidemiologic information, treatment, follow-up and outcomes on breast nodule/cancer cases collected.
The specific aim of this research is to determine if the blood from brain-injured patients contains reproducible protein markers that appear prior to elevations in intracranial pressure (ICP).
This study compares changes in P16INK4A expression and plasma proteomic signatures of specific organ age pre- and post-chemotherapy in women treated with adjuvant chemotherapy for early-stage breast cancer. It aims to determine if biological and accelerated immune aging, assessed using T cells from peripheral blood, represents aging in different organs. Patients receiving chemotherapy, especially adjuvant regimens that include anthracyclines and taxanes, often experience late development of cardiac toxicity, functional loss, and cognitive decline. Comparing baseline characteristics with organ aging before therapy might identify patients at the highest risk for chemotherapy complications. For example, this is clinically significant for patients whose therapy includes taxanes or other drugs known to cause peripheral neuropathy. Identifying aging in the neurological or vascular systems before treatment might lead to changes in regimens. Determining accelerated aging in specific organs allows for investigating interventions to mitigate organ damage. For instance, identifying patients at the highest risk of cardiac aging after treatment could lead to testing the effects of exercise, senolytics, and other strategies to reduce the risk of long-term heart disease.
Peripheral blood contains enormous quantity of biological information that can improve our patient care. Investigators plan to use proteomics from serum to study its value in predicting the therapeutic response and toxicities of immunotherapy in non-small cell lung cancer (NSCLC).
Study is aimed at determining why some patients with episodic headache proceed to chronic daily or near daily headaches. The Investigators seek to discover differences in brain anatomy and function, composition of cerebrospinal fluid, blood products, genetics, and patient phenotypes that might help explain this process.
Neovascularization (NV) is the innate capability to enlarge collateral arteries ("arteriogenesis"), and to stimulate growth of new capillaries, arterioles and venules at the tissue level ("angiogenesis"). Patients with Chronic Limb-threatening Ischemia (CLI) present with forefoot rest-pain, ulceration and/or gangrene. They require risky and costly revascularization operations to avoid amputation. The investigators hypothesize that their inadequate NV can be modulated to restore this capability. By correcting impediments to NV in an out-patient setting, the investigators expect to facilitate CLI management. While the following impediments to NV are complex, the solution is not. Arteriogenesis necessitates endothelial cell activation in small collaterals as blood is offloaded away from the occluded artery. Shear stress provides this stimulus, but is attenuated caudal to multi-level arterial occlusive disease. The "arteriogenesis switch" is not turned on. Furthermore, the lack of nutritive oxygenated blood inflow and the accumulation of toxic metabolic by-products are adverse to synthetic pathways in the ischemic tissue. Additionally, protein "distress" signals cannot be effectively disseminated by the ischemic tissue, and the reparative progenitor cells they are supposed to mobilize cannot effectively home back to the ischemic tissue to orchestrate NV. The CLI patient is especially disadvantaged by having diminished function and number of circulating progenitor cells (CPC). Lastly these elderly, often diabetic, patients are less able to fend off infection. An FDA approved external programmed pneumatic compression device (PPCD) was used to restore the shear stress stimulus required for arteriogenesis. It also enhances oxygenated nutritive arterial inflow, clears waste products of metabolism (increased venous and lymphatic outflow), and helps distress proteins reach the central circulation and mobilized progenitor cells to return to the ischemic tissue. We corrected the progenitor cell and immunologic impairment with granulocyte colony stimulating factor (G-CSF), FDA approved for stem cell mobilization and immunological boost in the setting of cancer chemotherapy. The preliminary data show clinical, angiographic, hemodynamic and biochemical evidence for enhanced NV. The purpose for this study is to enroll 25 patients to reproduce the biochemical data to support a large scale clinical trial.
This is a non-randomized natural history protocol in which patients undergoing surgery or endoscopy for suspected/ diagnosed pancreaticobiliary strictures are assigned to a) control (chronic pancreatitis, no pancreatic neoplasm, primary sclerosing cholangitis), b) non-carcinoma (bile duct stones, papillary stenosis, ), c) carcinoma non-pancreatic (ampullary and distal bile duct or cholangiocarcinoma) and d) pancreatic ductal adenocarcinoma (pancreatic cancer.
The purpose of this study is to determine the role of Proteomics and Metallomics in Cerebral Vasospasm following Subarachnoid Hemorrhage
BACKGROUND: Lymphomas are comprised of a diversity of tumors with different pathologic and clinical features. While distinct differences in gene expression profiles have been elucidated in different lymphomas, there has been inconsistent correlation with the few published proteomic studies. Greater insights into the biology of lymphomas may be achieved by integrating current genomic information with additional studies focused on the interrelationships in tumors of the patterns of chromatin protein expression, chromatin protein modification, and RNA expression profiling (both within bulk tumor and within specific microscopic tumor niches accessible by microdissection and cell sorting approaches). OBJECTIVES: The goals of this protocol are to identify the global levels of all histones (including variant histones) and non-histone chromosomal proteins, and to measure the relative levels of most known covalent modifications on histone and non-histone chromosomal proteins. For a limited number of cases illustrative of selected pathological entities, we propose to map the genome-wide distribution of those modifications judged to be biochemically instructive. ELIGIBILITY: This work will involve the analysis of a broad panel of lymphoma and lymphoid samples, which were previously procured under multiple protocols at the NIH, and for which there is excess tissue available for research. We also request permission to extend this analysis to surplus materials to be accrued under existing protocols, upon completion of all superseding diagnostic tests and medical/scientific studies. The criteria for inclusion in this study are subsumed under the enveloping protocols. The number of cases to be included is dependent upon the size of these protocols; because statistical significance improves with increasing numbers. We hope to include up to 300 cases. DESIGN: Lysates from surplus samples will be prepared and arrayed onto microarrays. These arrays will be probed with panels of protein and modification specific antibodies. The antibody reactivity will be quantified and samples will be subjected to statistical analysis, especially hierarchical clustering to correlate patterns of reactivity with clinical and histological features. Representative cases for which sufficient surplus tissue remains will be subjected to ChIP-Seq to map the distribution of modifications across the genome.
This study is being done to examine lung function changes in individuals with HIV infection and to understand why individuals with HIV have increased risk of lung damage from cigarette smoking.
The purpose of this study is: 1. To identify specific set of proteins in the cerebrospinal fluid (fluid surrounding the brain and the spinal cord), that are believed to be seen in Chronic fatigue syndrome (CFS) patients, but not in healthy controls (HC). A similar study that the investigators had conducted before,suggested that significant changes in proteins in the cerebrospinal fluid may be due to the fundamental pathology of this disorder. 2. Increased cerebrospinal fluid pressure (pressure that helps the cerebrospinal fluid to move around the brain and the spinal cord), may be related with certain symptoms like headache, sleep problems, light headedness, increased pain, excessive tiredness (fatigue) even with minimal work and memory problems. 3. Assessment of Autonomic Nervous system function (Sympathetic nervous system)between the CFS and HC. 4. Perform Lung Function Testing or pulmonary function test to estimate the lung capacities and score shortness of breath while performing breathing maneuvers. 5. Dolorimetry (18 tender point test) for assessment of pain threshold. 6. Capsaicin skin test 7. Allergy skin test
The purpose of this study is to obtain young white blood cells (monocytes) from the investigators donated blood for research into how these cells change into large, mature white blood cells (macrophages) and how smoking causes Chronic Obstructive Pulmonary Disease (COPD).
The main focus of this pilot study is to construct a fairly complete protein profile of the epidermis. This will allow us to study how the epidermis responds to external stressors such as ultra-violet. We hypothesize that by using the cutting edge technology, proteomics, we will be able to construct a fairly complete profile of different epidermal cells (keratinocytes, epidermal nerve fibers (ENFs), melanocytes, Langerhans cell,...etc) of normal and ultraviolet (UV) irradiated skin.
Background: Fish oils are known to be beneficial to health and believed to be cardio-protective. Omega-3 fatty acid is the most known fish oil available in the market. LCMUFA (long-chain monounsaturated fatty acids) is also a fish oil but it is derived from fish that consumes a diet rich in omega-11 fatty acid. Researchers want to study omega-11 fatty acid enriched fish oil and understand its effect on cardiovascular health. Objective: To understand the effects of LCMUFA from fish oil on cardiovascular health. Eligibility: Healthy volunteers ages 18 and older with no history of cardiovascular disease Design: Participants will be screened with: * Medical history * Physical exam * Fasting blood and urine tests * Optional stool sample * Questions about their diet, exercise, and the types of medicines and dietary supplements they take * 7-day food diary * Cardio-Ankle Vascular Index (CAVI): Blood pressure is taken in the arms and legs. The heart is monitored. * After the screening visit, participants will take 4 gel capsules, 3 times a day after meals, for 8-10 weeks. * Electrocardiogram (EKG) Participants will have 3 additional visits. All include repeats of the screening tests. Visit 2 is 8 weeks after the screening visit. Participants will stop taking the capsules for 8 weeks after this visit. Visit 3 is at least 16 weeks after starting the supplement. Participants will take 4 capsules, 3 times a day after meals, for 8 weeks after this visit. Visit 4 is 8 weeks after starting the second supplement.
Background: - Metabolism is what the body does to turn food into energy. Omega-3 fatty acids are substances found in foods such as cold-water fish and shellfish that are essential for good health. Researchers want to see the effect of two fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on metabolism. They may be beneficial to cardiovascular health. Objective: - To understand the effects of EPA and DHA on metabolism. Eligibility: - Healthy people ages 18 years or above with plasma triglyceride (a type of fat in the blood) levels of 100 mg/dL or higher Design: * The study will last 20 to 24 weeks. * Participants will have 4 visits to the NIH Clinical Center. These will include: * Medical history * Physical Fasting blood and urine tests * CAVI tests: blood pressure is taken in the arms and legs, and the heart is monitored. * Participants will take an EPA/DHA dietary supplement. They will take 4 gel capsules, 3 times a day, for 6 or 7 weeks. Then they will not take the capsules for 8 to 10 weeks (a wash-out period). They will then take the capsules again for 6 or 7 weeks. * Participants will keep a food journal.
This study aims to examine the effect of force levels in orthodontic treatment during canine retraction. Force levels refer to the pressure applied by the orthodontic devices to move teeth. Data collection will include gingival fluid, dental molds from a digital scanner, and x-rays of the upper canine region on both sides of the mouth during treatment. The null hypothesis to be tested is that there is no significant difference in the rate of canine movement between the light force and the heavy force levels.
The goal of this clinical trial is to learn how exercise changes molecules in the blood in people with restless legs syndrome (RLS) to better understand the cause(s) of RLS. The main questions the investigators aim to answer are: How does long-term exercise change proteins in the blood? How does a single exercise session change proteins in the blood? The investigators will compare long-term exercise to no exercise to see if the changes in proteins are specific to exercise. Participants will complete an exercise test and provide blood samples before and after the exercise test. Participants will be randomized (like the flip of a coin) in to either the exercise or no-exercise group for 12 weeks and then complete the exercise test and blood samples again at the end.
This is a prospective, non-randomized, phase I study design evaluating the in vivo activities and expression of OCT1 and BCRP in mammary gland of lactating women at three time points postpartum.
This study will determine if ingesting a beet-based supplement with nitrates for 2 weeks moderates exercise-induced inflammation.
Vigorous exercise can stress the body. Consuming special types of diet supplements may help the body recover better from exercise. This includes a bright red supplement called astaxanthin that is found in certain algae and causes the pink-red color in salmon. Astaxanthin is an antioxidant and may protect cells from damage and improve the way the immune system functions. The main purpose of this study is to determine if 4 weeks of consuming astaxanthin improves recovery from 2.25 hours of intensive running on a treadmill. This study will also measure whether or not astaxanthin supplementation improves skin health
This is a randomized, crossover clinical trial with 25 male and female cyclists. Study participants will ingest polyphenol-rich cranberry juice or placebo juice for 4 weeks under double-blinded procedures, and then crossover to the opposite supplement. The primary objective of this study is to examine the efficacy of 4-weeks ingestion of cranberry juice in moderating exercise-induced inflammation, immune dysfunction, and muscle damage. Outcome measures will include global proteiomics, oxylipins, and cytokines.
This Pilot Study is to investigate the tear proteins in a multitude of cancer types and indulge in biomarker discovery to manufacture simple, accurate, and novel tear-based diagnostic tests.
The purpose of this study is to learn more about using a proteomic test called the SomaSignal Cardiovascular (CV) Risk Test in Type 2 Diabetes (CVD-T2D) to improve medical care for patients.
Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes coronavirus disease 2019 (COVID-19). The global outbreak of COVID-19 is a major public health problem. COVID-19 causes a wide range of symptoms. These symptoms range from mild breathing problems to life-threatening problems or death. Some people have no symptoms. This study aims to learn how acute and late immune responses to COVID-19 lead to different outcomes. The immune system is the body s defense against germs, including viruses, that invade the body. Objective: To characterize the immune responses during and after SARS-CoV-2 infection and determine if there is any relationship to clinical course and outcome. Eligibility: People ages 0 99 who have confirmed or suspected SARS-CoV-2 infection, people who are not infected despite heavy exposure, and relatives of enrolled participants. Design: This is a sample collection protocol to receive send-in biological specimens for exploratory studies, including gene testing. Participants will not be seen at the NIH for study visits. Study staff will talk with participants health care providers to screen them for the study. Participants enrolled into the protocol will send samples and clinical information at least once and more often if the participant has COVID-19. All participants will provide blood samples and possibly stool. We may also ask for left over specimens from any medical procedures completed as part of medical care. The study staff will also request participants health care providers to complete a survey to collect demographic and medical data. Some of this information may need to be provided directly by the participant. Pregnant individuals are invited to participate and may be asked to give cord blood samples after delivery. Study findings that affect participants health may be shared with their health care provider. Depending on findings, participants may be contacted to take part in other NIH studies.
The purpose of this protocol is to investigate the role of expired non-metabolic carbon dioxide in the relationship between fatigability and recovery and the response to aerobic exercise training in healthy individuals. Both fatigability and recovery are profoundly influenced by mitochondrial energetics which can be inhibited by ionic by-product accumulation during exercise. Buffering mechanisms of these fatigue-inducing ions releases non-metabolic carbon dioxide (CO2) that can be measured as expired CO2 (VCO2) during cardiopulmonary exercise testing (CPET), however the role of non-metabolic VCO2 in the relationship between fatigability and recovery has yet to be investigated. Furthermore, this study aims to identify the how the patterns of proteins in healthy individuals respond to aerobic exercise training (e.g. stationary cycling) over approximately one month. The underlying mechanisms of recovery after physical activity, including mechanisms or biological pathways that could be highlighted by analysis of proteins in urine, could add to scientific knowledge regarding physical activity tolerance and potential exercise interventions. This knowledge could eventually assist with designing precise and personalized exercise interventions to improve physical activity performance. The investigators hypothesize that 1) non-metabolic CO2 will be at least moderately associated with the inverse relationship between fatigability and recovery; and 2) highly active adults, compared to sedentary individuals, will exhibit differential proteomic patterns in response to an initial acute bout and subsequent repeated bouts of aerobic exercise.
1. Assess validity of methods involved in molecular studies of the skin in inflammatory skin disease 2. Assess feasibility of methods for grafting fresh human skin (normal and diseased with inflammatory skin disease) onto an established xenograft murine model.
The investigators hypothesize that sperm production varies with time in men with no sperm in semen (non-obstructive azoospermia, NOA) and that the semen protein, TEX101, is able to monitor these changes. The investigators further hypothesize that TEX101 levels may be used to predict the optimum time for microsurgical testicular sperm extraction (mTESE) to provide the highest successful rates of sperm retrieval.
Prospective multicenter observational study to further develop and validate a preterm birth risk predictor, using a preterm cutoff at 37 0/7 weeks gestation and at 35 0/7 weeks gestation. A single maternal peripheral blood sample will be collected for analysis. Data related to potential risk factors for preterm birth will be obtained through maternal interview and review of medical records. Subjects will be followed through the delivery process to assess the course of pregnancy, labor, and to document any related maternal complications. Neonatal outcomes will be gathered from the medical record for up to 28 days of life or discharge, whichever occurs first.
This study is designed to collect longitudinal biological samples from patients after hematopoietic cell transplantation (HCT) cared for at multiple bone marrow transplant centers to validate biomarkers of both acute and chronic GVHD as well as for use in future unspecified research. The centers include Dana-Farber Cancer Institute and Boston's Children's Hospital, Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Fred Hutchinson Cancer Research Center, Texas Children's Hospital, Children's National Medical Center, and Indiana University Simon Cancer Center.