Active clinical trials for "Calcinosis"

Calcinosis, i.e. crystal-like nodules are troublesome complication of systemic sclerosis, an autoimmune disease. Pyrophosphate inhibits its formation is laborytory. We would like to test if orally administered pyrophosphate prevents calcinosis formation.

The goal of this study is to determine whether hemodialysis with citrate slows the progression of vascular calcification. Participants will be dialyzed with one of two standard dialysis solutions, one with and one without citrate, for 12 months and then switched to the other solution for 12 months. Vascular calcification will be measured on mammograms that will be performed at 6-month intervals and additional blood samples will be obtained at 6-month intervals.

The objective of the study is to evaluate the safety and performance of a new non-invasive ultrasound therapy (NIUT) with Valvosoft in the treatment of Calified Aortic Stenosis

This is a prospective, randomized, comparative, clinical trial conducted by Wuhan Union Hospital that aims to evaluate the efficacy and safety of folic acid compared to placebo in patients with calcific aortic valve disease with mild aortic valve stenosis.

This is a prospective, randomized, comparative, clinical trial conducted by Wuhan Union Hospital that aims to evaluate the efficacy and safety of pioglitazone compared to placebo in patients with calcific aortic valve disease with mild aortic valve stenosis.

Recruiting patients who were diagnosed with HFpEF. Using Non-contrast CT to measure the total Agatston coronary artery calcification score, epicardial adipose tissue volume and attenuation. Analysing the correlation between them.

Breast microcalcifications are a common mammographic finding. Microcalcifications are considered suspicious signs of breast cancer and a breast biopsy is required, however, cancer is diagnosed in only a few patients. Reducing unnecessary biopsies and rapid characterization of breast microcalcifications are unmet clinical needs. This study intends to implement a classification method for breast microcalcifications (as begnin or malign) with Artificial Intelligence techniques on mammographic images, evaluating the diagnostic performance (accuracy) of this approach. Another aim is the development of a diagnostic tool able to determining in-situ the biomolecular characteristics of microcalcifications. Raman spectroscopy (RS) is a highly specific method from the biomolecular point of view and it is able to explore molecular composition of a given sample through its direct irradiation (through laser light) and the simultaneous acquisition of emission signals. RS information could be combined togheter with imaging features to implement an AI model for the combined classification of breast microcalcifications

Anastomotic leakage is the major postoperative complication in right colectomy. Evaluation of calcification on coeliac trunk and mesenteric arteries on the preoperative CT scan could allow the identification of patient at-risk of postoperative complications. A monocentric retrospective study performed at CHD Vendée concluded than a calcification score over or equal to 3 was associated with a higher risk of developping an anastomotic leakage. The aim of this prospective multicentric study is to validate a calcification score based on preoperative CT scan analysis and focussing at coeliac trunk and mesenteric arteries.This study will involve patients operated on with a scheduled right colectomy.

Kidney transplant candidates undergo extensive diagnostic evaluation aimed at assessing their cardiovascular (CV) risk, which remains the leading cause of disability and death in this patient population. This includes among others an assessment of the iliac arterial calcification. Chronic kidney disease (CKD) patients have an increased incidence of arterial calcifications due to many factors, such as increased age, hyperparathyroidism, diabetes mellitus and hypercholesterolemia. Furthermore, the severity of pelvic arterial calcifications may impact the surgical planning of kidney transplantation (KT), choice of anastomosis site, complexity of the surgery, and patient and graft survival. Vascular calcifications are recognized as a good biomarker of overall cardiovascular burden. Although computerized tomography (CT) is the imaging modality of choice for calcification evaluation, compared to pelvic X-ray and Doppler ultrasound, it is not officially included in the guidelines of different international associations, which offer general recommendations for the assessment of iliac vessels. Nevertheless, centers are increasingly using CT in their pretransplant workup, either routinely or only in patients with increased CV risk. Also, impaired bone metabolism and its consequences have an important role in the development of vascular calcification. The investigators will determine the relationship between calcification burden of iliac arteries which will be assessed on CT and the serum level of bone remodeling biomarkers, including parathyroid hormone, (PTH), calcium, phosphates, OPG/RANK/RANKL (engl. osteoprotegerin/receptor activator of nuclear factor (NF)-κΒ/RANK ligand) and Gla-Rich protein (GLP). According to investigator knowledge, this will be the first prospective study that will correlate the degree of iliac arteries calcification based on CT analyses with the serum level of various bone remodeling markers, and their impact on clinical outcome in kidney transplant recipients. The investigators expect this research to improve insights into incidence and distribution of iliac artery calcifications in patients following kidney transplantation, their correlation with clinical data and bone remodeling markers and confirm the appropriateness of using computerized tomography in a routine pretransplantation work-up.

This study has four objectives: 1) to provide investigators the opportunity to study bone specimens from patients with various skeletal diseases; 2) to treat patients with skeletal diseases at the NIH; 3) to expose NIH trainees to certain skeletal diseases; and 4) to gain more knowledge about skeletal diseases and stimulate further study of bone biology. Anyone with a disease that affects the skeleton may be eligible for this study. All evaluations, tests, procedures and treatments given study participants are used in the standard care of skeletal diseases. No experimental evaluations or treatments are offered. Patient evaluations include a medical history, review of medical records and routine physical examination. Based on the findings, other procedures may be recommended, including blood tests, urine tests, and imaging tests, such as X-rays, bone densitometry, bone scan, computed tomography (CT) and magnetic resonance imaging (MRI). Bone specimens from participants will be collected for research use. Specimens will be obtained from bone removed during a patient s planned surgical procedure performed for medical care, or patients may be requested to have a bone biopsy removal of a small piece of bone tissue as part of the patient evaluation procedure.