NORMAL conjunctival vessels have been studied with the slit lamp by many observers, including Koeppe (1920-22), Vogt (1930-31), Graves (1934), Berliner (1943), and Meesmann (1927). The conjunctival vessels are capillaries, many of which are seen to be filled with red blood corpuscles; some of these capillaries are fairly large, but others are fine. These capillaries, containing one row of red b...

OBJECTIVE To describe and quantify the morphological characteristics of nailfold capillaries that distinguish different forms of connective tissue disease from healthy controls. METHODS A CCD video microscope with fibreoptic illumination and PC based image processing was used to visualise nailfold capillaries and to quantify findings in 23 patients with systemic sclerosis (SSc), 22 patients w...

The three-dimensional vascular arrangement of the mammalian spleen was investigated by means of injection replica scanning electron microscopy. The vascular arrangement of the white pulp and marginal zone in the mammalian spleen was divided into two groups: (1) the rat and mouse type, and (2) the human and dog type. In the rat and mouse, (a) the central artery gave rise to numerous follicular c...

Capillary rarefaction occurs in many tissues in patients with essential hypertension and may contribute to an increased vascular resistance and impaired muscle metabolism. Rarefaction may be caused by a structural (anatomic) absence of capillaries, functional nonperfusion, or both. The aim of this study was to assess the extent of structural versus functional capillary rarefaction in the skin o...

To study the microvascular circulation, we examined the proportion of open and functioning capillaries in the leg muscles, pancreas and small intestine of anesthetized rats. Fluorescein isothiocyanate (FITC)-labeled Lycopersicon esculentum lectin was injected into the heart and allowed to circulate for 3 min to label open and functioning capillaries. Specimens were removed, frozen, sectioned an...

The electrical resistance of consecutive segments of capillaries has been determined by a method in which the microvessels were treated as a leaky, infinite cable. A two-dimensional analytical model to describe the potential field in response to intracapillary current injection was formulated. The model allowed determination of the electrical resistance from four sets of data: the capillary rad...

OBJECTIVES To observe for changes in capillary morphology and architecture by tight sequential videocapillaroscopic (VCP) assessment in patients with dermatomyositis (DM) and systemic sclerosis (SSc). METHODS VCP examination was performed in 6 patients with DM and 9 with SSc, at baseline and after one month for three times. Four consecutive fields were examined bilaterally for any single fing...

Due to high resolution power of sulfated cyclodextrins (HS-CDs), utilization of these selectors for chiral resolution of 7 basic and 2 zwitterionic drugs have been examined. Experiments were performed on a HP3DCE instrument equipped with an on-column diode array UV absorbance detector. Fused silica capillaries with an inner diameter of 50 ?m, an outer diameter of 365 ?m, and a total length of 4...

Due to high resolution power of sulfated cyclodextrins (HS-CDs), utilization of these selectors for chiral resolution of 7 basic and 2 zwitterionic drugs have been examined. Experiments were performed on a HP3DCE instrument equipped with an on-column diode array UV absorbance detector. Fused silica capillaries with an inner diameter of 50 ?m, an outer diameter of 365 ?m, and a total length of 4...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : vitiligo as a common pigmentary disorder affects up to 2% of the general population. there are several treatment modalities in the literature but photo therapy is one of the best known with an improving effect. the goal of this study was to compare the efficacy of nb-uvb alone with adjunction of nb-uvb with ne...