BACKGROUND Retinal edema is the major complication of retinal vein occlusion and diabetic retinopathy; it can damage visual function by influencing macular region. This study was to establish a rat retinal edema model and explore the related VEGF expression and observe the responses to anti-VEGF drugs in this model. METHODS A rat retinal edema model was established by inducing photochemical r...

Sections of human hypophyses were fixed in either formalin or Bouin's fluid and stained by a variety of acid stains. The stains were employed singly, in combination with each other and in conjunction with various mucoid staining procedures, After these procedures the chromophils of the pars distalis were classified as either acidophilic, mucoid, acidophilic-mucoid, modified or degranulated. The...

Ca(2+) uptake by membrane fractions from barley (Hordeum vulgare L. cv CM72) roots was characterized. Uptake of (45)Ca(2+) was measured in membrane vesicles obtained from continuous and discontinuous sucrose gradients. A single, large peak of Ca(2+) uptake coincided with the peak of proton transport by the tonoplast H(+)-ATPase. Depending on the concentration of Ca(2+) in the assay, Ca(2+) upta...

Respiring mitochondria drive the electrophoretic uptake of K+ and other cations. In the presence of permeant acids this transport leads to mitochondrial swelling if it is not compensated by electroneutral K+/H+ exchange mediated by the K+/H+ antiporter. The mechanism of influx has yet to be established; however, evidence is accumulating that in addition to leak pathways a specific K+ channel or...

Photochemically induced cerebral infarction has been considered a clinically relevant model for ischemic stroke. We evaluated various transgenic mice to study the role of platelet adhesion molecules in this model. Infarction to the sensorimotoric cortex was induced by erythrosin B and laser light. Infarct volumes were calculated from triphenyltetrazolium chloride stained brain slices. Thrombus ...

BACKGROUND The use of the laser as an auxiliary tool has refined the traditional technique for lipoplasty. During laser lipolysis, the interaction between the laser and the fat produced direct cellular destruction before the suction, reduced bleeding, and promoted skin tightening. OBJECTIVE This study sought to perform a comparative histologic evaluation of laser lipolysis with the pulsed 106...

It has long been established that the inner membrane of plant mitochondria is permeable to Cl-. Evidence has also accumulated which suggests that a number of other anions such as Pi and dicarboxylates can also be transported electrophoretically. In this paper, we present evidence that anion uniport in plant mitochondria is mediated via a pH-regulated channel related to the so-called inner membr...

Low power optical phase conjugation (OPC) in dyes embedded in thin mms has been recently suggested and demonstrated by a few authors. Silberberg and Bar-Josephl have used the dyes eosin and erythrosin in gelatin fIlms. FIuorescein has been studied by Fujiwara and Nakagawa2 in gelatin fllms and by Kramer et al.3 in boric acid glass. Few reports on the studies of nonlinear optical properties of d...

PURPOSE To assess a biological effect induced by temperature elevation during transpupillary thermotherapy (TTT). METHODS Six pigmented rabbits were anesthetized, and TTT was performed on the right eye using an 810-nm diode laser installed on a slit lamp (spot size, 1.3 mm; duration, 60 seconds; power, 92-150 mW). A series of laser pulses were aimed at the posterior pole of the retina. The le...

Food color additives are vital to how we taste and perceive food, yet they generally remain mysterious to the public. This article examines food color additives from historical and regulatory perspectives. First, it uses recent examples to illustrate the importance of colors to our enjoyment of food. It then recounts the early history of food colors and the emergence of regulation to prevent th...