Clinical Trials About "Influence Particle Surface Area Concentration Production Organic Particulate" RSS

08:27 EDT 20th May 2019 | BioPortfolio

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Showing "Influence Particle Surface Area Concentration Production Organic Particulate" Clinical Trials 1–25 of 10,000+

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Acute Regulation of Intestinal and Hepatic Lipoprotein Production by Glucagon

Insulin resistant states are characterized by hepatic lipoprotein (VLDL) particle overproduction. Numerous hormonal and nutritional factors are known to influence hepatic lipoprotein particle production, including insulin and free fatty acids (FFA). In contrast to the liver, the intestine has traditionally been viewed as a 'passive' organ with respect to lipoprotein production, with intestinal lipoprotein particle production determined mainly by the amount of fat ingested and...

Asthma & Exposure to Peaks in Particulate Air Pollution

We are testing the following two hypotheses: 1) Peaks in hourly exposures to airborne particulate matter (PM) of outdoor origin will be more closely associated with acute asthmatic responses to particles than 24-hour average exposures in susceptible individuals; 2) Personal exposure to PM, and estimated particle dose to the lungs, will be more closely associated with daily asthma severity than standard outdoor particle concentrations measured as 24-hour averages at governmental...

Regulation of Intestinal and Hepatic Lipoprotein Particle Production by Blood Glucose in Humans

The purpose of study is to examine whether raised blood glucose enhances lipid particle production independent of effects on gastric emptying and pancreatic/ gastrointestinal hormone production.


Exenatide (Byetta ®) Regulation of Intestinal and Hepatic Lipoprotein Particle Production in Humans

Exenatide acutely inhibits intestinal lipoprotein particle production. We are unable to speculate whether exenatide affects hepatic lipoprotein production in humans since there is currently no evidence from animal models or in vitro studies that have demonstrated an effect

Pair Production PET Imaging to Detect Particle Distribution in Patients Undergoing Yttrium-90 Radioembolization

The primary goal of the study is to see if the PET/CT will be able to determine the precise location of the Y-90 particles within the liver and within the tumors. We hope to use this information in order to see if these particles distribute evenly throughout large tumors or if the particles go into the tumor which is located in the portal vein. The secondary goals are threefold. First correlate the distribution of Y90 particles (as demonstrated by PET/CT) with the degree of de...

Concentration- Versus Body Surface Area-based HIPEC in Colorectal Peritoneal Carcinomatosis' Treatment

Colorectal Cancer (CRC) is the third most common cancer and the fourth most common cause of cancer-related death worldwide. CRC frequently gives rise to transcoelomic spread of tumor cells in the peritoneal cavity, which ultimately leads to Peritoneal Carcinomatosis (PC). A new loco-regional treatment modality combines Cytoreductive Surgery (CRS) and Hyperthermic Intraperitoneal Peroperative Chemotherapy (HIPEC). The current HIPEC dosing regimens for the treatment of colorectal...

Particulate Matter, Blood Pressure, and the Sympathetic Nervous System

Healthy volunteers will be exposed to ambient air near a roadway under the conditions of with and without a facemask and their responses will be evaluated.

The Influence of Bone Allograft Particle Sizes on the Quantity and Quality of New Bone Formation in Grafted Extraction Sockets and Edentulous Ridges

This study will evaluate the effect of allograft bone particle size on the bone quantity and quality following socket grafting and lateral ridge augmentation in preparation for endosseous implant placement. Pre (baseline)- and post-grafting (3 months for sockets and 6 months for edentulous ridges) clinical as well as 2- and 3-dimensional radiographic measurements will be used to evaluate the differences between sites grafted with small vs. large particle sized bone allografts....

Effect of Diesel Exhaust Particulate Exposures on Endothelial Function in Humans

Objectives: This proposal addresses the overall hypothesis that ambient fine particulate matter exerts cardiovascular health effects via alteration of endothelial homeostasis, through a mechanism mediated by oxidative stress. This project will use a controlled human inhalation exposure to diesel exhaust particulate (DEP) as a model to address the following objectives: 1) Determine whether exposure to inhaled DEP is associated with endothelial dysfunction in a concentration-re...

Influence of Platelet-Rich Fibrin on Post-extraction Alveolar Ridge Healing/Preservation as a Stand-alone or Adjunct to Particulate Graft

The goal of this project is to evaluate the influence of platelet rich fibrin (PRF) in extraction socket healing with or without particulate bone graft. The hypothesis of this study is that PRF will enhance the extraction socket healing and new bone formation when compared to extraction sockets grafted without PRF.

Effect of Preemptive Epidural Analgesia in Labor on Cytokine Production

During labor there is an increased production of inflammatory mediators called cytokines. Higher concentration of certain cytokines has been linked to adverse neonatal and maternal outcomes. Epidural analgesia is commonly performed after the parturient feels labor pain. We hypothesis that preemptive epidural analgesia (initiated before labor pain begins)can influence the production of cytokines.

Organic Diet Intervention in Primary School Children

The study aims to evaluate the hypothesized benefits of a systematic organic diet for children, over those of a conventional diet. The specific objectives of this study are to: i) Demonstrate the decreased body burden of pesticides for those children consuming an organic diet, and ii) Evaluate the effects in specific biomarkers of inflammation and oxidative stress in children systematically consuming an organic diet.

RTA 408 Lotion in Healthy Volunteers

This study is a first-in-human study of a topical dermal lotion formulation of RTA 408, a novel small molecule which suppresses oxidative stress and inflammation. In this study, the safety, local pharmacodynamics (PD), and systemic pharmacokinetics (PK) of RTA 408 will be evaluated following topical application of RTA 408 Lotion to healthy volunteers. This study will be conducted in three parts. In Part A of the study, healthy volunteers will have RTA 408 Lotion Vehicle and R...

Excision Size and Location on the Postoperative Pain After Nevi Excision in Children

The primary purpose of this study is to investigate the effects of excised surface area/body surface area ratio and location of excision on the postoperative pain after nevi excision in children. The primary purpose of this study is to investigate the effects of excised surface area/body surface area ratio and location of excision on the emergence excitation after nevi excision in children.

The Influence of Citric Acid Bone Surface Etching and Bone Defect Fill on GCF BMP-2 Release Profile

This study evaluates the effect of citric acid on bone surface of infrabony defects when used for 30 seconds at ph 1 and 50% concentration before the application of bovine derived xenograft to fill the defect, Bone Morphogenic protein 2 (BMP-2) marker was evaluated in 5 different days during the first month after surgery and clinical and radiographic parameters were reassessed after 6 months

Association of Air Quality and Myocardial Infarction

Besides classical cardiovascular risk factors such as smoking, obesity, elevated cholesterol levels and diabetes there are also acute factors potentially triggering acute coronary events. The impact of various substances and air pollution are described. Particulate matter, especially with small particle size (

Ridge Preservation In Mandibular Molars Using Mixture Of ABB And Autogenous Particulate VS Sticky Bone

Histological Measurement Comparing the density of the new bone formed during socket preservation technique using a Mixture of Anorganic Bovine Bone(ABB) And Autogenous Particulate vs a Mixture of Injectable Platelets Rich Fibers, ABB And Autogenous Particulates (sticky bone). radiographical measurements of the amount of bone dimensions changes in socket preservation technique in 6-month period using a Mixture Of Anorganic Bovine Bone(ABB) And Autogenous Particulate vs a Mixture...

The Cardiovascular Effects of Nitrogen Dioxide Exposure

Exposure to air pollution has been linked to increased cardiorespiratory morbidity and mortality. The exact component of air pollution that mediates this effect is unknown, but the link is strongest for fine combustion derived particulate matter derived from traffic sources. It has been demonstrated that inhalation of diesel exhaust impairs vascular vasomotor tone and endogenous fibrinolysis. Recent studies using an inline retrofit particle trap to reduce the particulate compon...

Pollutant Altered Allergic Responses

This study is designed to investigate whether exposure to particulate air pollution increases the allergic response to allergens. Research studies suggest that symptoms in individuals with allergies may be aggravated by exposure to particulate air pollution. We sought to experimental determine this by exposing human volunteers to combustion particles, a component of air pollution, and then challenge them with an allergen such as ragweed or oak tree pollen. Using biological te...

Impact of Ketogenic Diet on Lipoproteins in Refractory Epilepsy

The ketogenic diet is a non-pharmacological treatment prescribed especially for children and indicated in most specialized centers for patients with refractory epilepsy. The composition of the ketogenic diet is based on high-fat, low-carbohydrate, moderate protein content, and the production of ketone bodies is the probable mechanism involved in the control of seizures. The relationship between the treatment of the ketogenic diet and changes in oxidative characteristics, physic...

Woodsmoke Particulate + Prednisone

Deployment of military personnel has been associated with increased respiratory illness likely due, in part, to inhalation of unusual particulate matter (PM), such as from burn pits. Inflammation is a key initial response to inhaled particulates. The researchers have developed a protocol using inhaled wood smoke particles (WSP) as a way to study PM-induced airway inflammation. Exposure to wood smoke particles causes symptoms, even in healthy people, such as eye irritation, coug...

Comparison of Caries Arrested & Prevented Among SDF, NaF Varnish and Combination in Children

Tooth decay is one of the most common chronic infectious disease found in children worldwide and if left untreated, is rapidly progress. Severe tooth decay in children is not only affect child's health and school performance, but also has impact on the family well-being. Oral rehabilitation in children requires time, resources and effort of dental specialists, the child and parents. Caries is a destructive condition of organic and inorganic components of the tooth structures bu...

Effect of GLP-1 Receptor Agonist, Exenatide on Glucosuria Induced Elevation in ENDOGENOUS GLUCOSE PRODUCTION (EGP)

In this study, the researchers hope to learn about SGLT2 inhibition on EGP (endogenous glucose production) and plasma glucose concentration in diabetic subjects. Researchers will examine diabetes and the role of increased plasma glucagon, decline in plasma insulin, and fall in plasma glucose concentration.

TLD-1, a Novel Liposomal Doxorubicin, in Patients With Advanced Solid Tumors

TLD-1 is a novel liposomal formulation of doxorubicin (PEG surface) that compared favorably to conventional liposomal formulations of doxorubicin including Caelyx® in preclinical in vivo models. Particle features including size, charge distribution, lipid composition and drug release add up to a considerably altered particle behavior compared to Caelyx®, potentially explaining the lack of hand-foot-syndrome in respective animal models. Preclinical evaluation confirmed TLD-1 t...

Determining the Responsiveness of Intestinal Lipoprotein Production to an Elevation of Plasma Free Fatty Acids

Lipoproteins are large complexes of molecules that transport lipids (primarily triglycerides and cholesterol) through the blood. The intestine has traditionally been viewed as a 'passive' organ with respect to lipoprotein production, with intestinal lipoprotein production rates responding mainly to fat ingestion and absorption. The investigators have recently demonstrated in animal models that there is an overproduction of intestinal lipoproteins in both the fasted and the ...

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