View clinical trials related to Blister.
Filter by:It is well documented that following thermal burns injury the development of hypertrophic scars and keloid (HSK) ranges between 40 to 90%. on the other hand It is well documented that cryosurgery wounds generally heal with minimal tissue contraction, resulting in good cosmetic results and with minimal complications. The Aim of the study is To specify the burn and cryosurgery blister fluid for proteins, cytokines and cells and To compare between the above data regarding possible proteins, cytokines and cells, in regard to their possible effect on scarring and wound healing. Also to Identify those components which are present only in the cryosurgery blister and which might have an anti-scarring effect and to characterize them biochemically.
The purpose of this study is to determine if one of the new types of dressings (MEPORE PRO and/or MEPILEX BORDER ) will reduce the blister rate compared to the currently used HYPAFIX.
Blisters are a very common complaint in both the general population and also the athlete. This study's aim is to determine whether applying paper tape (an inexpensive and common component of most foot care kits) to the foot of endurance runners prevents the frequency and severity of friction blisters.
This quantitative, interview-based study will determine if increased prescription medication adherence via blister pack administration will reduce suicide related behavior among the high risk population of patients discharged from a psychiatric inpatient unit. The aims of the project are to determine whether blister packaging medication significantly increases treatment adherence and if blister packaging significantly decreases intentional self-poisoning behavior (i.e., suicide attempts and completions). By tracking former psychiatric inpatients for 12 months post-discharge and obtaining monthly medication adherence ratings, we will determine if blister packaging (BP) medications leads to better adherence than dispensing as usual (DUA). The psychiatric patients we will be recruiting have been diagnosed with, major affective disorder, bipolar affective disorder, post-traumatic stress disorder, or schizophrenia (or any combination of these diagnoses). By tracking former psychiatric patients for 12 months post-discharge and obtaining monthly reports (self-report and medical record review) of suicide-related behaviors, we will determine if patients in the BP condition have less intentional self-poisoning behavior than those in the DAU condition.
Study to evaluate the safety and performance of a new blister patch intended to treat blisters on the heel of the foot.
The purpose of this study is to investigate the utility of the cantharidin-induced skin blister assay for evaluation of the anti-inflammatory effects of macrolides in healthy male volunteers.
Background: - Blister fluid contains many of the same biomarkers (substances that can be used to determine the effects of certain kinds of treatments) as blood and urine samples, particularly regarding changes in the skin. - The Radiation Oncology Branch and others are conducting research studies that require blood and urine samples from healthy volunteers and from patients with cancer. In addition to these samples, researchers would like to collect the fluid from blisters to examine markers of inflammation in the skin. Objectives: - To compare blood, urine, and blister fluid samples of patients with cancer who are undergoing radiation therapy to that of volunteers without cancer who will not be receiving radiation therapy. - To gather more information about the effects of radiation therapy on the skin and body fluids of individuals. Eligibility: - Patients 18 years of age and older who will be receiving radiation therapy for either breast or prostate cancer. - A separate group of healthy volunteers will also participate in this study. Design: - Physical examination and blood samples to determine eligibility for the study. - Blister induction, conducted before the start of radiation treatment, at completion of radiotherapy (last day of treatment), and at a visit 12 months after the end of radiation treatment. - Blisters will be created through the use of a suction blister device on the hip (for patients with prostate cancer) or on the treated breast or location of removed breast (for patients with breast cancer). - Blisters will take approximately 30 minutes to form, and fluid will be removed with a needle and syringe. - Blood and urine samples will also be collected at this time. - Radiation treatment for breast or prostate cancer will be conducted according to standard procedures, or as directed by a separate research protocol. - Evaluations during the treatment period: - Physical examination, including vital signs and body weight checks, and pregnancy test for women who can become pregnant. - Blood and urine tests. - Disease evaluation. - Post-treatment evaluations: - Clinic visits at months 1, 3, 6, 9, and 12 after the end of radiation therapy for physical examination and disease assessment. - Study will end 1 year after the final radiation treatment, upon the collection of the final (third) blister fluid sample.
Trabeculectomy is an ocular surgery intended to reduce intra-ocular pressure the surgery creates a sub-conjunctival filtering bleb which filters aqueous humor fluid out. A rather common adverse event of the surgery is increasing vascularity of the conjunctiva overlying the bleb. This leads to adherence of the conjunctiva to the sclera and fibrosis and finally failure of the bleb (and of the surgery) this study intends to demonstrate that post operative subconjunctival bevacizumab injection will reduce incidence of bleb vascularity and ultimately, bleb failure.
Congenital bleeding disorders characterized by abnormal platelet granules include Gray Platelet syndrome (GPS; defective alpha-granules), Hermansky-Pudlak syndrome (HPS; defective delta-granules), and combined alpha delta-storage pool deficiency (alpha delta-SPD). Other diseases associated with variable defects in platelet gamma-granules include Chediak-Higashi, Griscelli, Wiskott-Aldrich, and Thrombocytopenia Absent Radius syndromes. These disorders are models for the study of organelle formation in megakaryocytes and platelets. Characteristics of megakaryocytopoiesis in these disorders have not been investigated because megakaryocytes could not be cultured from patients in sufficient quantities for experimental purposes. Recent advances have made it possible to culture megakaryocytes using serum-free media supplemented with recombinant human thrombopoietin (TPO). Such cultured human megakaryocytes, amplified from bone marrow-derived CD34+ stem cells, synthesize and store organellar proteins and produce functional platelets. In this protocol, we plan to obtain bone marrow aspirates from 40 children and adults (ages 2 to 80 years) with GPS, HPS, and related disorders. Patients admitted to the NIH Clinical Center on specific disease-related protocols will be enrolled in this protocol during their routine 3-5 day visits. We will culture megakaryocytes from CD34+ stem cells isolated from bone marrow aspirates. Studies of cultured megakaryocytes will include evaluation of granule membrane and soluble proteins using fluorescent antibodies and immunoelectron microscopy and comparison of RNA and protein expression patterns between normal and patient cells. Precautions will be taken to prevent the primary risk of the bone marrow aspiration, i.e., prolonged bleeding at the aspiration site. Standard diagnostic studies on the bone marrow sample may reveal information that may directly benefit patients. However, the broader benefit of this study is the acquisition of a better understanding of the characteristics of functional platelet disorders and the process of intracellular vesicle formation.
The use of a suction blister apparatus has facilitated study of the immunologic capacity of human epidermal cells. We have been able to prepare purified populations of these cells after blister formation. Specifically, using the blister tops, we are able to enrich for epidermal Langerhans cells which are very potent stimulators in antigen presenting assays. Thus, this normal volunteer study provides an important source of fresh epidermal tissue from which we can study normal epidermal Langerhans cell function. In addition, we have recently used blister roofs in important experimental models of HIV-1 transmission. There is no other method available for assessing the biologic function of freshly isolated Langerhans cells without altering their milieu. It is a very safe and effective way to obtain human epidermal samples.