The effect of delayed versus early loading on nitric oxide metabolism around dental implants: an 18-month comparative follow-up study.

Purpose: Nitrite is a stable end-product of nitric oxide oxidation. The aim of the present study was to quantitatively analyze peri-implant sulcular fluid (PISF) nitrite levels in a longitudinal study design to evaluate the potential changes in nitric oxide metabolism in relation to the clinical status of the peri-implant site and the loading style of the dental implants.

Materials And Methods: A total of 34 implants, either early loaded (EL) or delayed loaded (DL), in 17 patients were followed up for a period of 18 months.

Analysis of thte possible impact of inflammation severity and early and delayed loading on nitric oxide metabolism around dental implants.

Purpose: The aim of the present study was to analyze the possible impact of clinical status, presence and severity of inflammation, and loading on nitric oxide (NO) metabolism around mandibular dental implants.

Materials And Methods: A total of 34 implants in 17 patients, loaded either early (EL) or after a delay (DL), were classified according to the presence and severity of clinical inflammation in the peri-implant sites. Clinical parameters were recorded, peri-implant sulcular fluid (PISF) samples were obtained, and PISF nitrite levels were spectrophotometrically determined.

Correlation of injury severity and tissue Evans blue content, lipid peroxidation and clinical evaluation in acute spinal cord injury in rats.

Objective: To demonstrate the changes in microvascular permeability occurring in association with graded acute spinal cord injury and to determine whether tissue Evans blue content is a useful indicator of the severity of spinal cord injury. The study also aimed to test the ability of the Evans blue method to demonstrate secondary injury after spinal cord contusion.

Methods: In step one of the study, spinal cord lipid peroxidation levels and spinal cord Evans blue content were evaluated at 2 h post-injury in five groups of rats: a control group, a laminectomy-only group and three trauma groups (10, 50, and 100 gcm).

Effects of carbon dioxide pneumoretroperitoneum on free radical formation in remote organs and use of verapamil as an antioxidant.

Background And Purpose: Pneumoretroperitoneum (Prp) acts as an ischemia/reperfusion (I/R) model. Ischemia/reperfusion (I/R) injury causes production of reactive oxygen species, which affect organs remote from the sites of I/R. The aim of this study was to assess the remote organ changes after Prp and to explore the effects of antioxidants.

Comparison of changes in tissue oxidative-stress markers in experimental model of open, laparoscopic, and retroperitoneoscopic donor nephrectomy.

Purpose: We evaluated the oxidative stress in renal tissue during three types of surgery: open donor nephrectomy (ODN), laparoscopic donor nephrectomy (LDN), and retroperitoneoscopic donor nephrectomy (RDN). The aim was to find out which is the appropriate procedure for harvesting a donor kidney.

Materials And Methods: Twenty-four New Zealand White rabbits were randomized to four groups, each consisting of six rabbits.

Analysis of the relationship between the severity of periodontal destruction and proteoglycan metabolism of gingiva and gingival crevicular flu.

Background: Although it is well-described that proteoglycans (PGs) are among the major non-collagenous components of the matrix which are degraded during periodontal diseases, the relationship between PG metabolism and seventy of periodontal breakdown, the extent of degradation of PGs together with the resulting end-products, and the elimination pathways of these catabolic end-products is likely to need further clarification.

Objective: The main aim of the present study was to analyze the possible impact of severity of periodontal destruction on PG metabolism of gingiva and gingival crevicular fluid (GCF).

Material And Methods: For this purpose, gingiva and GCF samples obtained from patients (n = 45) exhibiting sites (n = 57) with moderate periodontal breakdown (MP) or severe periodontal breakdown (SP) were analyzed for PG metabolism via spectrophotometric determination of uronic acid levels.

Orchidopexy or orchidectomy for preventing tissue hypoxia in contralateral testis following induction of ipsilateral abdominal testis associated with vas deferens obstruction.

Introduction: An experimental study was planned to evaluate and compare the effects of orchidopexy and orchidectomy on ipsilateral and contralateral testes in rats subjected to ipsilateral abdominal testis and vas deferens obstruction.

Materials And Methods: Four groups of 12 rats each were established. Sham operation, intra-abdominal testis with vas deferens obstruction and orchidopexy or orchidectomy for prior intra-abdominal testis with vas deferens obstruction were performed in groups 1, 2, 3 and 4, respectively.

Magnesium sulfate treatment in experimental spinal cord injury: emphasis on vascular changes and early clinical results.

Injury to the spinal cord results in disruption of neurons, cell membranes, axons, myelin, and endothelial cells. The aim of this study was to demonstrate the protective effect of magnesium sulfate on the blood-spinal cord barrier after acute spinal cord injury (SCI). This experiment was conducted in two parts.

Different responsiveness of central nervous system tissues to oxidative conditions and to the antioxidant effect of melatonin.

Melatonin, a product of the pineal gland, is an effective free-radical scavenger both in vitro and in vivo. Free-radical-mediated lipid peroxidation has been increasingly considered as an important factor in post-traumatic neuronal degeneration. The aim of the present study was (i).