PubMed Health⌕ Search

Biomedical subjects

A Parlar

Publications and source records attributed to A Parlar.

11 recordsLinked to original sources
PubMed2005

Ondansetron does not block tramadol-induced analgesia in mice.

Tramadol is a weak opioid agonist and an inhibitor of the reuptake of noradrenaline and serotonin. This study was undertaken to assess a possible pharmacological interaction of ondansetron, a serotonin-3 (5-hydroxytryptamine-3, 5-HT3) antagonist, and tramadol in an animal model for acute pain. Sixty-three male albino mice were randomly given saline, tramadol (10, 20, and 40 mg kg(-1)), ondansetron (1, 2, and 4 mg kg(-1)), or ondansetron (1, 2, and 4 mg kg(-1)) and tramadol (20 mg kg(-1), given 10 min after ondansetron injection) intraperitoneally. Each mouse was assessed twice for tail-flick latency before saline or drug administration and 15, 30, 60, 90, and 120 min thereafter. Tramadol (10 mg kg(-1)) had no effect on pain threshold levels of mice, but tramadol doses of 20 or 40 mg kg(-1) increased pain threshold levels in a dose-dependent manner (p < 0.01 for 20 mg kg(-1) and p < 0.001 for 40 mg kg(-1)). Ondansetron doses of 1, 2, or 4 mg kg(-1) alone had no effect on pain threshold levels of mice. Tramadol (20 mg kg(-1)) and ondansetron (1, 2, and 4 mg kg(-1)) increased pain threshold levels at all doses (p < 0.001 for 1 and 2 mg kg(-1) ondansetron and p < 0.01 for 4 mg kg(-1) ondansetron). The pain threshold levels of mice given tramadol (20 mg kg(-1)) alone or tramadol and ondansetron (p > 0.05 for 1, 2, and 4 mg kg(-1)) were similar. Our results indicate that ondansetron-a 5-HT3 selective antagonist-does not decrease the analgesic effectiveness of tramadol in mice, which may be the result of different mechanisms involving 5-HT3 receptors.

Analgesia↗
PubMed2000

Influence of feeding regimens on non-invasive inferior vena cava and hepatic vein velocity measurements in infants.

UNLABELLED: The aim of this study was to investigate the effects of feeding type and osmotic load on intravascular volume status. Ninety term, healthy infants 2 mo of age were included in the study. The breastfed and formula-fed groups each consisted of 45 infants. Echocardiographic examination was performed before and after feeding. The collapse index of the inferior vena cava (IVCIC) and right atrial pressure (RAP) were calculated. No statistically significant differences were found between before- and after-feeding values of IVCIC, RAP and hepatic vein velocities in breastfed infants. In the formula-fed group, after-feeding values of IVCIC were significantly lower and RAP, hepatic vein systolic and diastolic velocities were significantly higher compared to the before-feeding values. Most of the mothers (78%) were unsuccessful at preparing the formula at appropriate concentrations. No statistically significant differences were found between the before-and after-feeding values of IVCIC, RAP and hepatic vein velocities in infants being fed appropriately prepared formula. The after-feeding values of hepatic vein velocities were higher than those of before-feeding values; after-feeding values of IVCIC were lower than before-feeding values in infants being fed highly concentrated formula. CONCLUSION: The values of inferior vena cava indices and hepatic vein velocities were not effected by feeding in infants receiving appropriately concentrated formula, like those of infants receiving breast milk. However, feeding with highly concentrated formula may cause intravascular volume expansion.

Blood Flow Velocity↗
PubMed1996

The influence of feeding regimens on endogenous digoxin-like immunoreactive substance concentrations in infants.

The aim of this study was to investigate serum digoxin-like immunoreactive substance (DLIS) levels in 60 healthy term infants when they reached 1-6 months of age with regard to feeding regimen. Group I consisted of 30 infants fed exclusively on breast milk. Groups II and III each consisted of 15 infants fed on formula and cow's milk, and on formula and cow's milk supplemented by breast milk, respectively. Mean serum DLIS concentrations were 0.03 +/- 0.05, 0.18 +/- 0.09 and 0.15 +/- 0.09 ng/ml in groups I-III, respectively. The difference between the DLIS levels in groups II and III was not significant. Serum DLIS levels of infants in groups II and III, on the other hand, were significantly higher than in group I (p < 0.05). These findings were interpreted to suggest that artificial nutrients may cause volume expansion and an increase in endogenous DLIS levels. The latter response is possibly a protective mechanism to decrease volume expansion in groups II and III.

Blood Volume↗
PubMed1995

Lymphocyte subsets and plasma IL-1 alpha, IL-2, and TNF-alpha concentrations in acute rheumatic fever and chronic rheumatic heart disease.

The distribution of CD3+, CD4+, CD8+, CD19+, CD16+, and CD25+ lymphocyte populations in peripheral blood as well as the plasma concentrations of interleukin-1 alpha (IL-1 alpha), and IL-2 and tumor necrosis factor alpha (TNF-alpha) were investigated in 25 children with acute rheumatic fever (ARF) at the time of admission and after 3 months and in 15 children with chronic rheumatic heart disease (CRHD) and in 15 children with streptoccocal pharyngitis (SP) in order to determine changes in lymphocyte subsets and cytokine concentrations occurring during different stages of the disease. The percentages and absolute counts of CD4+, CD16+, CD25+ cells, the ration of CD4/CD8 and plasma concentrations of IL-1 alpha and IL-2 in patients with ARF were significantly higher at admission than 3 months later. These levels were also significantly higher than in patients with CRHD, SP, or normal controls. Production of IL-2 in ARF and CRHD patients directly correlated with the percentages of CD4+ and CD25+ cells. According to our results, the evidences of increased cellular immune response in ARF are increased percentages CD4+ and CD25+ cells, CD4/CD8 ratio, and increased plasma concentrations of IL-1 alpha and IL-2. Furthermore, activation of cellular immune response was not present throughout all stages of rheumatic heart disease and also in SP.

Adolescent↗
PubMed1995

A case of Marden-Walker syndrome with Dandy-Walker malformation.

A 5-month-old girl with Marden-Walker syndrome is presented. This is a rare autosomal recessive syndrome. So far, approximately 20 cases have been described in the literature. The patient was hospitalized because of difficulty in feeding and slow spontaneous movements. Her parents were first cousins. She was diagnosed with clinical findings of growth and motor retardation, typical facial appearance, congenital heart disease, arachnodactyly, joint contractures, and a Dandy-Walker malformation on magnetic resonance imaging.

Brain↗
PubMed1995

Williams syndrome.

Williams syndrome is a rare syndrome. It usually can be diagnosed first in dental clinics because of the typical oral and facial features of the syndrome. The aim of this article is to report this 8 year old Turkish boy with Williams syndrome, and to revise the dental features of these special patients and the dental treatment procedures that can be followed for these patients.

Child↗
PubMed1989

[Oral findings in dyskeratosis congenita (a case report)].

Dyskeratosis congenita is a rare genokeratosis and characterized by, A) Reticular dermal atrophy and telangiectatic pigmentation, B) Distrophies of the nails, C) Oral leukokeratosis. In this article, a 22 year old male patient with Dyskeratosis congenita was presented and oral findings were discussed.

Adult↗