Validation of fluorescent-labeled microspheres for measurement of regional organ perfusion.
AuthorsGlenny RW, Bernard S, Brinkley M
JournalJ Appl Physiol
PubMed ID8335595
'Estimations of dog lung, pig heart, and pig kidney regional perfusion by use of fluorescent-labeled microspheres were compared with measurements obtained with standard radiolabeled microspheres. Pairs of radio- and fluorescent-labeled microspheres (15 microns diam, 6 colors) were injected into a central vein of a supine anesthetized dog and the left ... More
Blood flow measurements by the reference sample method with microsphere injection in to the aorta: an accurate and easy approach.
AuthorsSanchez S, Bandi JC, Mastai R
JournalProc Soc Exp Biol Med
PubMed ID1615013
'The validity of hemodynamic measurements by the reference sample method with microspheres injection into the aorta, via a carotid artery catheter, was evaluated in rats and compared with the results obtained after left ventricle injection. In the aorta injection group, a good mix of microspheres was observed in 83% of ... More
A pathological function for eotaxin and eosinophils in eosinophilic gastrointestinal inflammation.
AuthorsHogan SP, Mishra A, Brandt EB, Royalty MP, Pope SM, Zimmermann N, Foster PS, Rothenberg ME
JournalNat Immunol
PubMed ID11276207
'Although eosinophils have been implicated in the pathogenesis of gastrointestinal disorders, their function has not been established. Using a murine model of oral antigen-induced eosinophil-associated gastrointestinal disease, we report the pathological consequences of eosinophilic inflammation and the involvement of eotaxin and eosinophils. Exposure of mice to enteric-coated antigen promotes an ... More
Abrogation of ventricular arrhythmias in a model of ischemia and reperfusion by targeting myocardial calcium cycling.
'Abnormal intracellular Ca(2+) cycling plays an important role in cardiac dysfunction and ventricular arrhythmias in the setting of heart failure and transient cardiac ischemia followed by reperfusion (I/R). We hypothesized that overexpression of the sarcoplasmic reticulum Ca(2+) ATPase pump (SERCA2a) may improve both contractile dysfunction and ventricular arrhythmias. Continuous ECG ... More
Fluorescent microspheres to measure organ perfusion: validation of a simplified sample processing technique.
A disadvantage of nonradioactive microsphere techniques is that the processing of samples is time-consuming and complex. We developed and validated a simplified processing method for the fluorescent microsphere (FM) technique. In seven anesthetized dogs with coronary artery stenosis up to six different FM and five different radioactivity labeled microspheres (RM) ... More
Single-cell volume estimation by three-dimensional wide-field microscopy applied to astroglial primary cultures.
Astrocytes, which constitute a prominent part of the number and volume of brain cells, have a high capacity for controlling their volume, and astrocytic swelling is associated with a number of pathological states affecting the CNS. In order to understand the mechanisms for regulating cell volume in astrocytes better, it ... More
Contribution of extravascular compression to reduction of maximal coronary blood flow.
AuthorsAbel FL, Zhao RR, Bond RF
JournalAm J Physiol
PubMed ID1733324
Effects of ventricular compression on maximally dilated left circumflex coronary blood flow were investigated in seven mongrel dogs under pentobarbital anesthesia. The left circumflex artery was perfused with the animals' own blood at a constant pressure (63 mmHg) while left ventricular pressure was experimentally altered. Adenosine was infused to produce ... More