Nutcracker syndrome: a case-based review.

The nutcracker phenomenon, also known as left renal vein entrapment, occurs when there is extrinsic compression of the left renal vein, most often between the abdominal aorta and the superior mesenteric artery. Nutcracker syndrome refers to the constellation of clinical symptoms that may arise from the nutcracker phenomenon, typically inclusive of haematuria, flank/pelvic pain, orthostatic proteinuria and (in male patients) varicocele. We provide a short review of the nutcracker syndrome including various diagnostic and therapeutic modalities.

Collateral damage: a case report of vertebral artery dissection and stroke in the young with persistent primitive trigeminal artery.

Stroke in the young is an uncommon condition resulting in significant morbidity and as result trammels the integrity of healthcare systems [1]. We present an unusual case of a 37-year-old male presenting with neurologic signs of right parietal lobe infarction with evidence of vertebral artery dissection and persistent carotid-vertebrobasilar anastomosis as a conduit for thromboembolism.

High-Level Expression, Purification and Initial Characterization of Recombinant Histidine Kinase AHK1.

Plants employ a number of phosphorylation cascades in response to a wide range of environmental stimuli. Previous studies in and yeast indicate that histidine kinase AHK1 is a positive regulator of drought and osmotic stress responses. Based on these studies AHK1 was proposed a plant osmosensor, although the molecular basis of plant osmosensing still remains unknown.

Carbonate formation in salt dome cap rocks by microbial anaerobic oxidation of methane.

Major hydrocarbon accumulations occur in traps associated with salt domes. Whereas some of these hydrocarbons remain to be extracted for economic use, significant amounts have degraded in the subsurface, yielding mineral precipitates as byproducts. Salt domes of the Gulf of Mexico Basin typically exhibit extensive deposits of carbonate that form as cap rock atop salt structures.

Activity-dependent increases in local oxygen consumption correlate with postsynaptic currents in the mouse cerebellum in vivo.

Evoked neural activity correlates strongly with rises in cerebral metabolic rate of oxygen (CMRO(2)) and cerebral blood flow (CBF). Activity-dependent rises in CMRO(2) fluctuate with ATP turnover due to ion pumping. In vitro studies suggest that increases in cytosolic Ca(2+) stimulate oxidative metabolism via mitochondrial signaling, but whether this also occurs in the intact brain is unknown.