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Dent's Disease
Dent's disease (or Dent disease) is a rare X-linked recessive inherited condition that affects the proximal renal tubules of the kidney. It is one cause of Fanconi syndrome, and is characterized by tubular proteinuria, hypercalciuria, excess calcium in the urine, formation of calcium nephrolithiasis, kidney stones, nephrocalcinosis, and chronic kidney failure. "Dent's disease" is often used to describe an entire group of familial disorders, including X-linked recessive nephrolithiasis with kidney failure, X-linked recessive hypophosphatemic rickets, and both Japanese and idiopathic low-molecular-weight proteinuria. About 60% of patients have mutations in the ''CLCN5'' gene (Dent 1), which encodes a kidney-specific chloride/proton antiporter, and 15% of patients have mutations in the ''OCRL1'' gene (Dent 2). Signs and symptoms Dent's disease often produces the following signs and symptoms: * Polydipsia, Extreme thirst combined with dehydration, which leads to Polyuria, frequent uri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juxtaglomerular Apparatus
The juxtaglomerular apparatus (also known as the juxtaglomerular complex) is a structure in the kidney that regulates the function of each nephron, the functional units of the kidney. The juxtaglomerular apparatus is named because it is next to (juxta-) the glomerulus. The juxtaglomerular apparatus consists of three types of cells: # the macula densa, in the distal straight tubule ( thick ascending limb of the loop of Henle), after which the distal convoluted tubule begins # juxtaglomerular cells, (also known as granular cells) which secrete renin # extraglomerular mesangial cells Location The juxtaglomerular apparatus is part of the kidney nephron, next to the glomerulus. It is found between the afferent arteriole and the thick ascending limb of the loop of Henle (distal straight tubule) of the same nephron. This location is critical to its function in regulating renal blood flow and glomerular filtration rate. Function Juxtaglomerular cells Renin is produced by ju ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nephrolithiasis
Kidney stone disease (known as nephrolithiasis, renal calculus disease, or urolithiasis) is a crystallopathy and occurs when there are too many minerals in the urine and not enough liquid or hydration. This imbalance causes tiny pieces of crystal to aggregate and form hard masses, or calculi (stones) in the upper urinary tract. Because renal calculi typically form in the kidney, if small enough, they are able to leave the urinary tract via the urine stream. A small calculus may pass without causing symptoms. However, if a stone grows to more than , it can cause blockage of the ureter, resulting in extremely sharp and severe pain (renal colic) in the lower back that often radiates downward to the groin. A calculus may also result in blood in the urine, vomiting (due to severe pain), or painful urination. About half of all people who have had a kidney stone are likely to develop another within ten years. ''Renal'' is Latin for "kidney", while "nephro" is the Greek equivalent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrochlorothiazide
Hydrochlorothiazide, sold under the brand name Hydrodiuril among others, is a diuretic medication used to treat hypertension and swelling due to fluid build-up. Other uses include treating diabetes insipidus and renal tubular acidosis and to decrease the risk of kidney stones in those with a high calcium level in the urine. Hydrochlorothiazide is taken by mouth and may be combined with other blood pressure medications as a single pill to increase effectiveness. Hydrochlorothiazide is a thiazide medication which inhibits reabsorption of sodium and chloride ions from the distal convoluted tubules of the kidneys, causing a natriuresis. This initially increases urine volume and lowers blood volume. It is believed to reduce peripheral vascular resistance. Potential side effects include poor kidney function, electrolyte imbalances, including low blood potassium, and, less commonly, low blood sodium, gout, high blood sugar, and feeling lightheaded with standing. Two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diuretics
A diuretic () is any substance that promotes diuresis, the increased production of urine. This includes forced diuresis. A diuretic tablet is sometimes colloquially called a water tablet. There are several categories of diuretics. All diuretics increase the excretion of water from the body, through the kidneys. There exist several classes of diuretic, and each works in a distinct way. Alternatively, an antidiuretic, such as vasopressin (antidiuretic hormone), is an agent or drug which reduces the excretion of water in urine. Medical uses In medicine, diuretics are used to treat heart failure, liver cirrhosis, hypertension, influenza, water poisoning, and certain kidney diseases. Some diuretics, such as acetazolamide, help to make the urine more alkaline, and are helpful in increasing excretion of substances such as aspirin in cases of overdose or poisoning. Diuretics are sometimes abused by people with an eating disorder, especially people with bulimia nervosa, with the goal of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thiazide
Thiazide () refers to both a class of sulfur-containing organic molecules and a class of diuretics based on the chemical structure of benzothiadiazine. The thiazide drug class was discovered and developed at Merck and Co. in the 1950s. The first approved drug of this class, chlorothiazide, was marketed under the trade name Diuril beginning in 1958. In most countries, thiazides are the least expensive antihypertensive drugs available. Thiazide organic molecules are bi-cyclic structures that contain adjacent sulfur and nitrogen atoms on one ring. Confusion sometimes occurs because thiazide-like diuretics such as indapamide are referred to as thiazides despite not having the thiazide chemical structure. When used this way, "thiazide" refers to a drug which acts at the thiazide receptor. The thiazide receptor is a Sodium-chloride symporter, sodium-chloride transporter that pulls Sodium chloride, NaCl from the Lumen (anatomy), lumen in the distal convoluted tubule. Thiazide diuretics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oculocerebrorenal Syndrome
Oculocerebrorenal syndrome (also called Lowe syndrome) is a rare X-linked recessive disorder characterized by congenital cataracts, hypotonia, intellectual disability, proximal tubular acidosis, aminoaciduria and low-molecular-weight proteinuria. Lowe syndrome can be considered a cause of Fanconi syndrome (bicarbonaturia, renal tubular acidosis, potassium loss and sodium loss). Signs and symptoms Boys with Lowe syndrome are born with cataracts in both eyes; glaucoma is present in about half of the individuals with Lowe syndrome, though usually not at birth. While not present at birth, kidney problems develop in many affected boys at about one year of age. Renal pathology is characterized by an abnormal loss of certain substances into the urine, including bicarbonate, sodium, potassium, amino acids, organic acids, albumin, calcium and L-carnitine. This problem is known as Fanconi-type renal tubular dysfunction. Genetics This syndrome is caused by mutations in the '' OCRL'' gene wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
End-stage Kidney Disease
Chronic kidney disease (CKD) is a type of long-term kidney disease, defined by the sustained presence of abnormal kidney function and/or abnormal kidney structure. To meet criteria for CKD, the abnormalities must be present for at least three months. Early in the course of CKD, patients are usually asymptomatic, but later symptoms may include leg swelling, feeling tired, vomiting, loss of appetite, and confusion. Complications can relate to hormonal dysfunction of the kidneys and include (in chronological order) high blood pressure (often related to activation of the renin–angiotensin system), bone disease, and anemia. Additionally CKD patients have markedly increased cardiovascular complications with increased risks of death and hospitalization. CKD can lead to end-stage kidney failure requiring kidney dialysis or kidney transplantation. Causes of chronic kidney disease include diabetes, high blood pressure, glomerulonephritis, and polycystic kidney disease. Risk fac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperuricosuria
Hyperuricosuria is a medical term referring to the presence of excessive amounts of uric acid in the urine. For men this is at a rate greater than 800 mg/day, and for women, 750 mg/day. Notable direct causes of hyperuricosuria are dissolution of uric acid crystals in the kidneys or urinary bladder, and hyperuricemia. Notable indirect causes include uricosuric drugs, rapid breakdown of bodily tissues containing large quantities of DNA and RNA, and a diet high in purine. Medications that may contribute to the cure or amelioration of hyperuricosuria include allopurinol which acts by inhibiting xanthine oxidase and reducing uric acid production. Hyperuricosuria ''may'' be a medical sign of: *Gout (very common) *Kidney stones of uric acid (uric acid nephrolithiasis) *Acute uric acid nephropathy *Acute kidney failure *Tumor lysis syndrome *Fanconi syndrome *Dent's disease (very rare) Classification Acute (medicine), Acute hyperuricosuria is a common complication of tumor ly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaliuresis
Kaliuresis () or kaluresis () is the condition of excreting potassium in the urine. Thiazide diuretics are used to treat patients with heart failure. Their goal is to decrease the amount of salt (sodium chloride) in the body by decreasing the amount that the kidney reabsorbs. This excess sodium in the kidneys that is destined for excretion via urination can cause hyponatremia (low sodium level) and can lead to kaliuresis by increasing sodium-potassium exchange.Harrison's Principles of Internal Medicine, 16th edition See also * Natriuresis Natriuresis is the process of sodium excretion in the urine through the action of the kidneys. It is promoted by Brain natriuretic peptide, ventricular and atrial natriuretic peptides as well as calcitonin, and inhibited by chemicals such as aldost ... * Antikaliuretic Notes External links Merriam-Webster entry* Renal physiology {{treatment-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycosuria
Glycosuria is the excretion of glucose into the urine. Ordinarily, urine contains no glucose because the kidneys are able to reabsorb all of the filtered glucose from the tubular fluid back into the bloodstream. Glycosuria is nearly always caused by an elevated blood sugar level, most commonly due to untreated diabetes. Rarely, glycosuria is due to an intrinsic problem with glucose reabsorption within the kidneys (such as Fanconi syndrome), producing a condition termed ''renal glycosuria''. Glycosuria leads to excessive water loss into the urine with resultant dehydration, a process called osmotic diuresis. Alimentary glycosuria is a temporary condition, when a high amount of carbohydrate is taken, it is rapidly absorbed in some cases where a part of the stomach is surgically removed, the excessive glucose appears in urine producing glycosuria. Additionally, SGLT2 inhibitor medications ("gliflozins" or "flozins") produce glycosuria as their primary mechanism of action, by inhibi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phosphaturia
Urine electrolyte levels can be measured in a medical laboratory for diagnostic purposes. The urine concentrations of sodium, chlorine and potassium may be used to investigate conditions such as abnormal blood electrolyte levels, acute kidney injury, metabolic alkalosis and hypovolemia. Other electrolytes that can be measured in urine are calcium, phosphorus and magnesium Magnesium is a chemical element; it has Symbol (chemistry), symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 .... References Urine tests {{Med-diagnostic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
