300 results about "Renal injury" patented technology

A method and kit for detecting the immediate or early onset of renal disease and injury, including renal tubular cell injury, utilizing NGAL as an immediate or early on-set biomarker in a sample of blood serum. NGAL is a small secreted polypeptide that is protease resistant and consequently readily detected in the blood serum following renal tubule cell injury. NGAL protein expression is detected predominantly in proximal tubule cells, in a punctuate cytoplasmic distribution reminiscent of a secreted protein. The appearance NGAL in the serum is related to the dose and duration of renal ischemia and nephrotoxemia, and is diagnostic of renal tubule cell injury and renal failure. NGAL detection is also a useful marker for monitoring the nephrotoxic side effects of drugs or other therapeutic agents.

A method of assessing the ongoing kidney status of a mammal afflicted with or at risk of developing chronic renal injury or disease, including chronic renal failure (CRF) by detecting the quantity of Neutrophil Gelatinase-Associated Lipocalin (NGAL) in urine, serum or plasma samples at discrete time periods, as well as over time. Incremental increases in NGAL levels in CRF patients over a prolonged period of time are diagnostic of worsening kidney disease. This increase in NGAL precedes and correlates with other indicators of worsening chronic renal disease or CRF, such as increased serum creatinine, increased urine protein secretion, and lower glomerular filtration rate (GFR). Proper detection of worsening (or improving, if treatment has been instituted) renal status over time, confirmed by pre- and post-treatment NGAL levels in the patient, can aid the clinical practitioner in designing and/or maintaining a proper treatment regimen to slow or stop the progression of CRF.

A highly purified and heat stable cross-linked nonpolymeric tetrameric hemoglobin suitable for use in mammals without causing renal injury and vasoconstriction is provided. A high temperature and short time (HTST) heat processing step is performed to remove undesired dimeric form of hemoglobin, uncross-linked tetrameric hemoglobin, and plasma protein impurities effectively. Addition of N-acetyl cysteine after heat treatment and optionally before heat treatment maintains a low level of met-hemoglobin. The heat stable cross-linked tetrameric hemoglobin can improve and prolong oxygenation in normal and hypoxic tissue. In another aspect, the product is used in the treatment of various types of cancer such as leukemia, colorectal cancer, lung cancer, breast cancer, liver cancer, nasopharyngeal carcinoma and esophageal cancer. Another application is heart preservation in situations where there is a lack of oxygen supply in vivo, such as in heart transplant or oxygen-deprived heart.

The present invention relates to methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, the invention relates to using assays that detect one or more markers selected from the group consisting of soluble p-selectin, protein NOV homolog, soluble epidermal growth factor receptor, netrin-4, haptoglobin, heat shock protein beta-1, alpha-1-antitrypsin, leukocyte elastase, soluble tumor necrosis factor receptor superfamily member 6, soluble tumor necrosis factor ligand superfamily member 6, soluble intercellular adhesion molecule 2, active caspase-3, and soluble platelet endothelial cell adhesion molecule as diagnostic and prognostic biomarkers in renal injuries.

A high temperature-stable and highly purified cross-linked (optionally ≧70% β-β linked) tetrameric hemoglobin with high efficiency of oxygen delivery suitable for use in mammals without causing renal injury and vasoconstriction is provided. The dimeric form of hemoglobin is degenerated and purification processes are performed on red blood cells from whole blood. Controlled hypotonic lysis in an instant cytolysis apparatus prevents lysis of white blood cells. Nucleic acids from white blood cells and phospholipids impurities are not detected. Blocking of reactive sulfhydryl groups by a sulfhydryl reagent is performed in an oxygenated environment. Flowthrough column chromatography removes different plasma protein impurities. N-acetyl cysteine is added to the cross-linked tetrameric hemoglobin to maintain a low level of met-hemoglobin. The stabilized hemoglobin is preserved in an infusion bag with aluminum overwrap to prevent formation of inactive met-hemoglobin from oxygen intrusion. The product finds use in tissue oxygenation and cancer treatment.

Disclosed are methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, disclosed are assays that detect one or more markers selected from the group consisting of Prostatic acid phosphatase, Lactotransfenin, Soluble erythropoietin receptor, Von Willebrand factor, Soluble endothelial protein C receptor, and Beta-2-glycoprotein 1 as diagnostic and prognostic biomarkers in renal injuries.

The present invention relates to methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, the invention relates to using assays that detect one or more markers selected from the group consisting of soluble CD44 antigen, Angiopoietin-1, soluble Angiopoietin-1 receptor, C—X—C chemokine motif 5, soluble Endoglin, soluble Tumor-associated calcium signal transducer 1, Erythropoietin, soluble Fractalkine, Heme oxygenase 1, soluble Interleukin-1 receptor type II, soluble Interleukin-6 receptor subunit-alpha, Lymphotactin, Lymphotoxin-alpha, Stromelysin-1, C—C motif chemokine 22, C—C motif chemokine 5, and Thrombospondin-1 as diagnostic and prognostic biomarkers in renal injuries.

The present invention relates to methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, the invention relates to using assays that detect one or more markers selected from the group consisting of cytochrome c and insulin-like growth factor IA as diagnostic and prognostic biomarkers in renal injuries.

The invention provides an acquisition method for exosomes derived from human urinary cells. The acquisition method includes the steps that firstly, human urine source cells are separately cultured, a culture medium is collected, the culture medium of the human urine source cells is filtered through a 0.22-micrometer filter membrane, and then large cell fragments and other impurities are removed; then an organelle is centrifugally removed, and supernatant is reserved; a membrane capable of intercepting 100KD molecular weight is used, the exosomes in the supernatant are centrifugally intercepted, after interception, PBS is used for eluting the membrane, and an exosome concentrated solution is obtained. The exosomes can be used for preparing medicine with the effects of resisting apoptosis, promoting angiogenesis, restoring ischemia damage and promoting cell growth and used for treating skin defects, skin ulcers, pressure sores, bone defects, bone ununion, femoral head necrosis, renal injury, ischemic injury, spinal cord injury, islet damage, diabetes, complications of diabetes, Alzheimer's diseases and the like.

The present invention is directed to acute kidney injury biomarkers, and methods and kits comprising the use of agents directed against acute kidney injury biomarkers for facilitating and enhancing the diagnosis of AKI. The present invention is based on the discovery that specific biomarkers are present in urine at higher concentrations in subjects with acute kidney injury (AKI) as compared with subjects that have no symptoms of AKI. The invention is directed to methods for diagnosis of AKI by determining and monitoring the levels of at least one biomarker protein in a biological sample, such as urine. Further, the invention is directed to methods for facilitating the distinction of kidney infection from bladder infection in a subject.

According to aspects of the invention, methods for preventing or treating kidney damage are provided. Compositions for the prevention or treatment of kidney damage are also provided. Aspects of the invention relate to methods for screening the toxicity of a radio-contrast agent. Kits for the treatment or prevention of kidney damage are also provided.

A method of assessing the ongoing kidney status of a mammal afflicted with or at risk of developing chronic renal injury or disease, including chronic renal failure (CRF) by detecting the quantity of Neutrophil Gelatinase-Associated Lipocalin (NGAL) in urine, serum or plasma samples at discrete time periods, as well as over time. Incremental increases in NGAL levels in CRF patients over a prolonged period of time are diagnostic of worsening kidney disease. This increase in NGAL precedes and correlates with other indicators of worsening chronic renal disease or CRF, such as increased serum creatinine, increased urine protein secretion, and lower glomerular filtration rate (GFR). Proper detection of worsening (or improving, if treatment has been instituted) renal status over time, confirmed by pre- and post-treatment NGAL levels in the patient, can aid the clinical practitioner in designing and/or maintaining a proper treatment regimen to slow or stop the progression of CRF.

Improved devices, systems, and methods treatment of patients can be used to help mitigate injury to the kidneys by applying cyclical mechanical pressure energy at low intensities. The energy often be selectively directed from non-invasive transducers disposed outside the patients. The energy will typically comprise low frequency ultrasound energy, shock wave energy, or the like, and may induce the generation and/or release of nitric oxide, thereby enhancing perfusion and ameliorating tissue damage. Superimposed micro and macro duty cycles may help avoid thermal and other injury to tissues of the patient during treatment. Bilateral treatments are facilitated by a support structure that orients at least one transducer toward each kidney.

The present invention relates to the identification and use of protein biomarkers with clinical relevance to kidney status and chronic renal injury or disorder. In particular, the invention provides the identity of marker proteins which are recognized by antibodies present in patients suffering from end-stage renal disorder, stable renal transplant, renal transplant glomerulopathy (TG), and interstitial fibrosis and tubular atrophy (IFTA). Methods and kits are described for using these proteins in the study and diagnosis of chronic renal transplant injury, and in the selection and/or monitoring of treatment regimens.

A method heat treatment of cross-linked hemoglobin solutions including polymeric hemoglobin is disclosed. The method involves contacting the hemoglobin solution with a high temperature short time heat treatment apparatus. The high temperature short time process thermally denatures unmodified tetrameric hemoglobin (hemoglobin dimer form), protein impurities (e.g. immunoglobin-G, serum albumin), bacteria, and viruses so that renal injury, vascular detrimental effects and other toxicity reactions can be avoided.

The present invention relates to methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, the invention relates to using assays that detect C-X-C motif chemokines-1, -2, and -3 as diagnostic and prognostic biomarker assays in renal injuries.

The present invention relates to methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, the invention relates to using a one or more assays configured to detect a kidney injury marker selected from the group consisting of Thymic stromal lymphopoietin, Vascular endothelial growth factor receptor 1, C-C motif chemokine 1, C-C motif chemokine 17, C-C motif chemokine 21, C-C motif chemokine 27, FLT-3 Ligand, Immunoglobulin G subclass 3, Interleukin-1 receptor type I, Interleukin-20, Interleukin-29, Interleukin-7, Platelet-derived growth factor A/B dimer, Platelet-derived growth factor A/A dimer, and MMP9:TIMP2 complex as diagnostic and prognostic biomarkers in renal injuries.