Oral malodor is an unpleasant condition experienced by most individuals around the world. Volatile sulfur compounds (VSCs) may be the main source of oral malodor both in humans and dogs. The purpose of this study was to examine the suitability for measurement of oral malodor levels in dogs using OralChromaTM, a portable gas chromatograph developed for human use. Oral malodor and periodontal dis...

Hydrogen sulfide (H2S) is an important biological signaling agent that exerts action on numerous (patho)physiological processes. Once generated, H2S can be oxidized to generate reductant-labile sulfane sulfur pools, which include hydrodisulfides/persulfides. Despite the importance of hydrodisulfides in H2S storage and signaling, little is known about the physical properties or chemical reactivi...

BACKGROUND We studied the annual variability of the concentration and isotopic composition of main sulfur species and sulfide oxidation intermediates in the water column of monomictic fresh-water Lake Kinneret. Sulfate concentrations in the lake are <1 mM and similar to concentrations that are proposed to have existed in the Paleoproterozoic ocean. The main goal of this research was to explore ...

Forty-eight patients with ;cold areas' on (99m)Tc sulphur colloid liver scintiscans were scanned again using (75)Se-selenomethionine. In 11 patients with primary hepatocellular carcinoma considerable uptake of (75)Se-selenomethionine could be demonstrated in the area of the tumour and uptake of (75)Se-selenomethionine was also observed over extrahepatic metastases in two of these cases. In cont...

Halitosis and olfactory dysfunction may disrupt an individual's quality of life remarkably. One may ask whether halitosis has effects on olfactory functions or not? Thus, the aim of this study was to evaluate the olfactory abilities of subjects with chronic halitosis evaluated using the measurements of volatile sulfur compounds. This study was carried out in 77 subjects, with a mean age of 40.1...

Six patients with cold defects on sulfur colloid liver/spleen scans and no history suggestive of malignant disease were imaged with Tc-99m in vivo labeled red blood cells. Dynamic, immediate, and delayed static images of the liver were obtained on all patients, demonstrating accumulation of activity in the lesions over time in five patients. This correlates well with the suspected diagnosis of ...

STUDY OBJECTIVES The objective of this study was to evaluate the feasibility of the sentinel lymph node (SLN) biopsy in peripheral clinically stage I or II non-small cell lung cancer (NSCLC) using (99m)Tc colloid and a hand-held gamma detection probe, associated with a blue dye technique. DESIGN Prospective study. SETTING Royal Brompton Hospital, London, UK; and Hopital Nord, Saint Etienne,...

amyloidosis is characterized by an abnormal extracellular deposition of amyloid in different organs, where it usually causes some type of dysfunction. its cause is unknown. five different types of amyloidosis have been described according to the underlying disease; immunoglobulin amyloidosis, familial amyloidosis, senile systemic amyloidosis, secondary amyloidosis and hemodialysis-associated am...

Several radionuclides in a variety of chemical forms have been used for spleen scanning (1). None of these has as desirable physical properties as tech netium-99m, namely, the clean 140 keV gamma, absence of particulate radiation, and short physical half-life (2). As a result, it would be desirable to find a com pound of “9―Tc that could be used for spleen scanning. Technetium-99m sulfur co...