نتایج جستجو برای: densitometric analysis

تعداد نتایج: 2824842  

Journal: :American journal of physiology. Heart and circulatory physiology 2000
G Münch B Bölck K Brixius H Reuter U Mehlhorn W Bloch R H Schwinger

The present investigation addresses whether protein expression and function of sarco(endo)plasmic reticulum Ca(2+)-ATPase (SERCA2a) and phospholamban (PLB) correlate in failing and nonfailing human myocardium. SERCA2a activity and protein expression, PLB phosphorylation, and the force-frequency relationship (FFR) have been determined in right atrium (RA) and left ventricle (LV) from nonfailing ...

Journal: :Analytical biochemistry 2000
V E Fadouloglou N M Glykos M Kokkinidis

spective gel image revealed that the density of the area between 200 and 1600 bp was very similar in all of the four lanes. Therefore, volume-corrected calculation of this experiment (Fig. 1B, filled columns) displayed results comparable to the densitometric analysis of Fig. 1A (shown in Fig. 1B, open columns). Thus, this method offers reproducible results as a function of cell number but indep...

2002
BARBARA VILHAR MARINA DERMASTIA

DNAimage cytometry is a relatively new technique for densitometric measurement of nuclear DNA content, which has only rarely been used in botany and thus no methodological standards exist for this method to be applied to the measurement of plant material. In the present paper we address several problems related to standardisation of DNA image cytometry, such as stability of the measuring system...

2013
Syed Ghulam Musharraf Nayab Kanwal Qamar ul Arfeen

BACKGROUND Glycyrrhetic acid, a pentacyclic triterpenoid, possesses a broad range of pharmacological activities and serves as template to synthesize many bioactive drugs. This paper describes a simple, accurate, and sensitive stability-indicating TLC densitometric method for the determination of glycyrrhetic acid and its degradation product as per the ICH guidelines. RESULTS Separation was ca...

2017
Samuel Y. Ash Rola Harmouche Diego Lassala Lopez Vallejo Julian A. Villalba Kris Ostridge River Gunville Carolyn E. Come Jorge Onieva Onieva James C. Ross Gary M. Hunninghake Souheil Y. El-Chemaly Tracy J. Doyle Pietro Nardelli Gonzalo V. Sanchez-Ferrero Hilary J. Goldberg Ivan O. Rosas Raul San Jose Estepar George R. Washko

BACKGROUND Prior studies of clinical prognostication in idiopathic pulmonary fibrosis (IPF) using computed tomography (CT) have often used subjective analyses or have evaluated quantitative measures in isolation. This study examined associations between both densitometric and local histogram based quantitative CT measurements with pulmonary function test (PFT) parameters and mortality. In addit...

Journal: :The Journal of Cell Biology 1963
Arnold Tamarin Leo M. Sreebny

The probable shape, size, and orientation of desmosomes of the cells comprising the secretory tubules in rat submaxillary gland was determined by statistical and algebraic methods applied to electron micrographs. It was concluded that these desmosomes are discrete ellipsoidal discs whose principal axes are in the order of 4100 and 2500 angstrom units, and that they are preferentially oriented w...

Journal: :AJNR. American journal of neuroradiology 1985
G E Valvassori G D Dobben

Cochlear otosclerosis can be recognized in most cases by high-definition axial and coronal CT images. However, routine technique does not allow a quantitative measurement of the changes. Reported here is a study of cochlear CT densitometry. The densitometric profile of the cochlear capsule was obtained in 10 ears with normal hearing and 50 ears in 27 patients with known clinical otosclerosis an...

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