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tubules in Medical News

VARI researcher chosen for highly competitive Scholar-in-Training Award

...tumors. VARI researchers tested the effect of the BHD gene in two different tubules that are part of the filtration system of the kidney and found initial evidence that one of the tubules may be where BHD originates. In addition to Chen, five other VARI resea...

Female Hormones Deter Salt-Sensitive Hypertension

...rives up blood pressure as the body tries to force the kidneys to get rid of excess salt. Endothelin B (ETB) receptors, found in the blood vessels and tubules of the kidney, are thought to act as gatekeepers, deciding how much salt the body should excrete. "We know from other studies we have done that thi...

CSHL scientists discover link between control of chromosome duplication and segregation

...e, position themselves at opposite ends of the dividing cell. Each centrosome serves as an anchor for a spindle, a complex structure of filament-like tubules that radiates out from each centrosome and connects with special sites called centromeres on the chromosomes. By pulling on the chromosomes, the spin...

New study examines the validity of epo testing

...tment of Anesthesiology, Mayo Clinic, wrote that the physiological background for testing Epo in urine is complex and the handling of Epo by the renal tubules is poorly understood. The high number of false negative results found in the study implies a risk that athletes who use rHuEpo will avoid detection an...

New treatment option studied for bladder cancer

...ive. The most effective drug we have cant be used in some patients, Dr. Coleman says. Bladder cancer, the sixth most common cancer, often obstructs tubules that connect the kidney to the bladder, says Dr. Coleman. While the cancer typically doesnt spread upward, tubule blockage damages the kidneys. Additi...

Infertility is Seen in Men With SLE

...verity of sperm abnormalities, suggesting severe damage to the seminiferous tubules (the tiny tubes in which sperm are produced) in SLE. Follicle-stimulat...FSH) is a major marker of the function of the cells lining the seminiferous tubules and its higher levels in the group 2 SLE patients suggest testicular damage...

Chinese Medicinal Compound Stops Formation of Cysts in Polycystic Kidney

...normal kidney development, cells lining the kidney tubules continue growing and dividing until they receive a... to stop, the cells lining the fully-formed kidney tubules keep right on subdividing and growing. The result ...ed growth: uncontrolled growth of cells lining the tubules and the formation of large cysts in the kidneys. ...

Triptolide: A Potential Drug for Polycystic Kidney Disease

...tional Academy of Sciences. Over 12 million people worldwide suffer from PKD, a genetic disorder that causes uncontrolled growth of cells lining tubules in the kidneys, and results in the formation of many, large fluid-filled cysts in the kidneys. “Unfortunately, aside from kidney transplantation...

Prestigious Wilson Award Goes To Yale Cell Biologist Joel Rosenbaum

...emote. Few had paid attention to the fact that the cells forming the kidney tubules each had a single non-motile “primary” cilium pointing toward the center of...George Witman at University of Massachusetts Medical School examined kidney tubules of the PKD mutant mouse with the scanning electron microscope, they found t...

Two Chemical Compounds Restore Healthy Glucose Levels In Obese Mice

...was a hypothesis that the key to the obesity-diabetes connection might be found in the endoplasmic reticulum, or ER - a system of folded membranes and tubules in the cytoplasm of cells where proteins and lipids are manufactured, processed, and shipped around the cell. When unusual demands - such as excess fa...
tubules in Medical Technology

Freezing Kidney Cancer: Hot Treatment Should Be New Gold Standard for Destroying Small Tumors

...ost common cancer in men and the tenth in women. The most common type of kidney cancer is renal cell carcinoma, which forms in the lining of the renal tubules in the kidney that filter the blood and produce urine. Approximately 85 percent of kidney tumors are renal cell carcinomas. More than 32,000 Amer...
tubules in Medical Products

Vasopressin (AVP) RIA Test

Description:...tion of AVP is the regulation of water permeability of the renal collecting tubules and ascending loop of Henle. Mediated through activation of cAMP, the effec...n or action is a characteristic of polyuria, a condition in which the renal tubules fail to reabsorb solute-free water. In contrast, sustained, elevated levels...
Company:Diagnostic Systems Laboratories, Inc.

Retinol Binding Protein EIA Vitamin Assays 030-6110 RBP Bone and Minearl Metabolism

Description:...e the vitamin has been deliverd to the target cells. The free RBP molecule is then rapidly filtered at the glomerulus and catabolized in the renal tubules after resorption by the proximal tubular cells (like other small molecules e.g. -2 Microglobulin). In kidney disease with prevailing tubular chang...
Company:ALPCO Diagnostics
tubules in Medical Definition

Pathology

...syndrome | Nephrotic syndrome Diseases of the proximal convoluted tubules Fanconi syndrome (Type II renal tubular acidosis ) | renal cell carcinoma Diseases of the distal convoluted tubules pseudohypoaldosteronism (Type IV renal tubular acidosis ) Disea...
tubules in Medical Dictionary

Urinary casts

...ents, and more. ... Urinary casts . Definition: tubules in the kidneys secrete proteins. ... Urinary ...e urinary system. Urinary casts . Definition: tubules in the ... Urinary casts are tube-shaped p... out to form little cylindrical impressions of the tubules called casts . ... Urinary casts . Definition....

Testis

...a Latin word that ... Each testis is suspended in a outpouching of the peritoneal cavity. ... The bulk of each testis consists of seminiferous tubules embedded in relatively ... From 2002-2006, the median age at death for cancer of the testis was 40 years of age4 X Close ... shows that 70% ...

Sertoli

...ord games. Information about Sertoli cells in the free online ... Sertoli cell, Sertoli's cell - elongated cells found in the seminiferous tubules ... Molecular biology of the Sertoli cell. Griswold MD, Morales C, Sylvester SR. ... The Sertoli cell-mediated iron transport to germ cells ...

Renal cell carcinoma

...therapy is generally not effective for treating renal cell carcinoma . ... Renal cell carcinoma generally develops in the lining of the tubules that filter ... For more information on renal cell carcinoma , visit Britannica.com. ... Some renal cell carcinomas are noticed only .....

Nephrosis

...cation of another ... nephrosis n. , pl. -ses . A disease of the kidneys marked by degenerative lesions, especially of the winding uriniferous tubules Information about nephrosis in the free online English dictionary and ... nephrosis - a syndrome characterized by edema and large amounts ...

Nephrogenic Diabetes Insipidus

...urogenic diabetes insipidus . ... The Diabetes Insipidus Foundation, Inc. ... Nephrogenic diabetes insipidus occurs when the kidney tubules ... Nephrogenic diabetes ... Most commonly, nephrogenic diabetes insipidus develops because ... Support information for Nephrogenic D...
tubules in Biological News

Researchers may have found why women have an edge on salt-sensitive hypertension

... on how these endothelin A, or ETA, receptors work in the blood vessels and tubules of the kidney. They also may help explain the swelling that occurs in some ...ically determine what different receptor subtypes are doing in the kidney's tubules and vasculature while colleagues at the University of Edinburgh in Scotland...

Protein 'tubules' free avian flu virus from immune recognition

...vian influenza virus strain called H5N1 forms tiny tubules in which it "hides" the pieces of double-stranded ...r portions of the protein NS1 combine to form tiny tubules where double-stranded RNA is hidden from the immun...r factor binding sites found on the surface of the tubules also play a role in fooling the immune system. ...

Link possible between pet food contamination and baby formula contamination

...wo compounds form a virtually insoluble complex. This complex forms in the tubules of the kidney, blocking urine flow and causing renal failure. The research...s soluble in acid, suggesting that acidification of the urine in the distal tubules of the kidney may be a reasonable treatment option. ...

Bacterial slime helps cause serious disease

...finding is a step forward in our understanding of Leptospirosis. We now need to study the mechanism of biofilm formation in both fresh water and renal tubules in animal kidneys, said Professor Picardeau. We hope our research will lead to the identification of new strategies to diagnose and prevent this negle...

Genetic tug of war determines sexual differentiation

...o the formation of specialized cells known as Sertoli cells, which then spur the cascade of events leading to the formation of the future seminiferous tubules of the adult testis," she continued. "Once the testes are formed, they start producing testosterone, which commits the whole animal to male developmen...

'Underground' tunnels discovered as means for communication between immune system cells

...hat intercellular communication is much more complicated. While it would be fascinating to see this interplay inside living tissue, detecting the tiny tubules in such a complex environment may be nearly impossible with current technology. ...
tubules in Biological Technology

Investigational Urine NGAL Biomarker Shows Promise to Monitor Cyclosporine Toxicity in Cardiac Transplant Patients

...introduce the product in Europe in late 2009. The assay is not available in the United States. NGAL is a small, robust protein produced by the kidney tubules and appears in urine just two-to-four hours following acute kidney injury (AKI), up to 46 hours sooner than current test methods. "Nephrologi...

Glossary for The BioPharm Guide to Fermentation and Cell Culture

...fense against foreign nucleic acids. endoplasmic reticulum A highly specialized and complex network of branching, interconnecting tubules (surrounded by membranes) found in the cytoplasm of most animal and plant cells. The rough endoplasmic reticulum is where ribosome...

An Image-Based Assay of Endothelial Cell Tube Formation as a Model of Angiogenesis

...l cells ability to form distinct blood-vessel-like tubules in an extracellular matrix (BD Matrigel Matrix) wh...escence microscopy. Although quantification of the tubules can be performed by manual tracing, this method pr...total length of the tubules, the total area of the tubules and the total number of segments. The software all...
tubules in Biological Definition

Excretion

...cess salt through the tear ducts associated with the eyes. Such birds can drink sea water without harm. In insects , a system involving Malpighian tubules is utilized to excrete metabolic waste. Metabolic waste diffuses or is actively transported into the tubule, which transports the wastes to the intes...

Kidney

...of the water in the filtrate enters the convoluted tubules and collecting ducts by osmosis. Fluid flows fro...tion. Fluids become more concentrated along the tubules and ducts to form urine , which is then drained i... medulla. They contain the secreting apparatus and tubules and are also called malpighian pyramids . re...

Marcello Malpighi

... him, including a skin layer (Malpighi layer ) and two different Malpighian corpuscles in the kidneys and the spleen , as well as the Malpighian tubules in the excretory system of insects. He also studied chick embryo development with detailed drawings and discovered taste buds of human tongue....

Sperm

... cell is characterized by a minimum of cytoplasm. Sperm production Main article: Spermatogenesis Sperm are produced in the seminiferous tubules of the testes in a process called spermatogenesis. Round cells called spermatogonia divide and differentiate eventually to become sperm. During se...

Spermatogenesis

...ility and capacitation (initiation of the acrosome reaction) of the sperm cells so viability is maintained. Spermatozoa are produced in seminiferous tubules in the testes . They start off as spermatogonia , undergoing mitosis becoming a type A spermatogonium or a type B spermatogonium. Type B spermatog...

Tumor

...ransitional cell carcinoma basal cell (only in skin): basal cell carcinoma glandular epithelium: adenoma , cystadenoma , adenocarcinoma tubules epithelium (kidney): renal tubular adenoma , renal cell carcinoma (Grawitz tumor ) hepatocytes: hepatocellular adenoma , hepatocellular carcinom...
tubules in Biological Dictionary

Seminiferous tubules

Seminiferous tubules are located in the testicles, and are the specific location of meiosis, and the subsequent creation of gametes, namely spermatozoa. Aspects of the topic seminiferous -tubule are discussed in the following places at Britannica. Assorted References reproductive function ( i...

Collecting tubules

In the kidney, the collecting tubule is a tubular segment of the renal collecting duct system that connects the distal convoluted tubule to the cortical collecting duct. The collecting duct system of the kidney consists of a series of tubules and ducts that connect the nephrons...

Striate

...ranales (bryophyta) ... striate mark with striae or striations ... What type of muscle that is invonluntary and not striate ? What are the T tubules of striate muscle membranes? ... Information about striate in the free online English dictionary and encyclopedia. ... To mark with striae or...

Spermatogonia

...divide equally at stage VII and produce two ... Rarely dividing single A spermatogonia exist which potentially are the male ... ... seminiferous tubules consist of diploid spermatogonia , stem cells that are the ... spermatogonia to stimulate sperm production (aided by the LH needed for ......

Renal portal system

...enal portal system (Johnson, 1979) and the specific ... to the glomeruli in quail, rather than an effect on the renal portal system . ... tubules is supplied by the renal portal sys- tem, the effect of diclofenac on this system ... white represent the renal portal system and the blac...

Renal

...information summary about the treatment of renal cell cancer. ... Renal cell cancer is a disease in which malignant (cancer) cells form in tubules ... o Medulla – broken into 8-18 striated conical segments = renal pyramids ... Renal artery divides into branches – segmental arteries – int...

Nephron

...nephrons ... The nephron consists of a system of tubules in close ... Podocyte-derived BMP7 is critical ...ary with ... The nephron consists of a system of tubules in close association with a network ... The str...atments, and other ... Nephron : any of the small tubules that are the excretory ... ...

Myofibrils

...scle contractions and how ... The growth in the number of myofibrils swells inside the muscle fiber and you get pumped up. ... interconnecting tubules surround myofibrils . store Ca2 ... 3. myofibril - cylindrical bundle of myofilaments (proteins) ... sarcomere - segment of myofibril ... ...

Malpighian tubule

...... of anion and cation transport in Malpighian tubules of Drosophila melanogaster. ... Definition of ...ors stimulate fluid secretion in the Malpighian tubules ... In each Malpighian tubule , one cell is ...y assay for measurement ... The four Malpighian tubules are arranged as an anterior and posterior pair....

Interstitial cells

... Leydig cells , also known as interstitial cells of Leydig, are found adjacent to the seminiferous tubules in the testicle. They can secrete testosterone and are often closely related to nerves. Leydig cells have round... Interstitial cell . Fro...
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