Laryngopharyngeal reflux disease in the Greek general population,prevalence and risk factors

Gait function may be impaired in patients with vestibular disorders, making gait assessment in the clinical setting relevant for this patient population. The purpose of this study was to evaluate the discriminant validity of a gait assessment protocol between patients with vestibular disorders and healthy participants. Furthermore, test re-test reproducibility and the measurement error of gait performance measures in patients with vestibular lesions was performed under different walking conditions. Gait parameters of thirty-five patients with vestibular disorders and twenty-seven healthy controls were assessed twice with the GAITRite® system. Discriminant validity, reproducibility (intra class correlation [ICC]) and the measurement error (standard error of measurement [SEM], smallest detectable change [SDC]) were determined for gait speed, cadence and step length. Bland-Altman plots were made to assess systematic bias between tests. A significant effect of grouping on gait performance indicates discriminant validity of gait assessment. All tests revealed differences between patients and healthy controls (p < 0.01). The ICCs for test re-test reproducibility were excellent (0.70-0.96) and measurement error showed acceptable SDC values for gait parameters derived from three walking conditions (9-19 %). Bland-Altman plots indicated no systematic bias. Good validity and reproducibility of GAITRite® system measurements suggest that this system could facilitate the study of gait in patients with vestibular disorders in clinical settings. The SDC values for gait are generally small enough to detect changes after a rehabilitation program for patients with vestibular disorders.     

Biological interactions of a calcium silicate based cement (Biodentine™) with Stem Cells from Human Exfoliated Deciduous teeth

Objective

To investigate the biological interactions of a calcium silicate based cement (Biodentine?) with Stem Cells from Human Exfoliated Deciduous teeth (SHED), focusing on viability/proliferation, odontogenic differentiation, biomineralization and elemental release/exchange.

Expression of genes that regulate follicle development and maturation during ovarian stimulation in poor responders

Research questionSex hormone-binding globulin (SHBG), androgen receptor (AR), LH beta polypeptide (LHB), progesterone receptor membrane component 1 (PGRMC1) and progesterone receptor membrane component 2 (PGRMC2) regulate follicle development and maturation. Their mRNA expression was assessed in peripheral blood mononuclear cells (PBMC) of normal and poor responders, during ovarian stimulation.DesignFifty-two normal responders and 15 poor responders according to the Bologna criteria were enrolled for IVF and intracytoplasmic sperm injection and stimulated with 200 IU of follitrophin alpha and gonadotrophin-releasing hormone antagonist. HCG was administered for final oocyte maturation. On days 1, 6 and 10 of stimulation, blood samples were obtained, serum hormone levels were measured, RNA was extracted from PBMC and real-time polymerase chain reaction was carried out to identify the mRNA levels. Relative mRNA expression of each gene was calculated by the comparative 2^?DDCt method.ResultsDifferences between mRNA levels of each gene on the same time point between the two groups were not significant. PGRMC1 and PGRMC2 mRNA levels were downregulated, adjusted for ovarian response and age. Positive correlations between PGRMC1 and AR (standardized beta = 0.890, P < 0.001) from day 1 to 6 and PGRMC1 and LHB (standardized beta = 0.806, P < 0.001) from day 1 to 10 were found in poor responders. PGRMC1 and PGRMC2 were positively correlated on days 6 and 10 in normal responders.ConclusionsPGRMC1 and PGRMC2 mRNA are significantly decreased during ovarian stimulation, with some potential differences between normal and poor responders.     

Optical coherence tomography measurements with the LENTIS Mplus multifocal intraocular lens

Background

To investigate optical coherence tomography (OCT) measurements following implantation of the LENTIS Mplus multifocal IOL, compared with a control group.

Methods

OCT scans were performed on 50 eyes with the Topcon 3D OCT-1000 in two groups of patients. The first group consisted of patients following implantation of the LENTIS Mplus, and a second group of age-matched control eyes following implantation of a monofocal aspheric IOL. Macular thickness and macular volume values were compared between groups and assessment for any onscreen visible artifacts.

Results

OCT scans were successfully performed in all 50 eyes with no visible artifacts in either group during scan acquisitions. There were no statistically significant differences (p?>?0.05) in any measured or calculated macular thickness or volume values between the two groups.

Conclusions

OCT measurements with the Topcon 3D OCT-1000 is possible and free from visible artifacts in eyes which have had the LENTIS Mplus multifocal IOL implanted. Macular thickness and volume values were similar to those of an age-matched control group of monofocal aspheric IOLs.     

Use of erythropoiesis stimulating agents and intravenous iron for cancer and treatment-related anaemia: the need for predictors and indicators of effectiveness has not abated

Cancer and treatment-related anaemia is a significant clinical problem. Erythropoiesis stimulating agents (ESA) improve anaemia and ultimately enhance patients' quality of life. However, about one-third of patients do not respond to ESA administration, mostly because of the impaired supply of iron to the erythroid marrow (functional iron deficiency). Concomitant administration of intravenous (IV) iron may improve responsiveness. The use of baseline predictors of response to ESA and of indicators of appropriateness of response and iron availability should allow targeted therapeutic interventions with both ESA and IV iron. Several biochemical and haematological indicators of response and of iron balance have been studied, but firm criteria for their use have not yet been rigorously established. The commonly used early predictive markers of response to ESA, such as baseline endogenous erythropoietin levels and an increase in haemoglobin, reticulocytes, and soluble transferrin receptor levels during ESA treatment, have not proved reliable due to their low sensitivity and specificity. Traditional markers of iron availability, such as serum ferritin and transferrin saturation display interpretation pitfalls. The need for predictors and indicators of responsiveness to ESA and IV iron is still current and clinically relevant.     

Detection of increased temperature of the culprit lesion after recent myocardial infarction: the favorable effect of statins

Background

Increased thermal heterogeneity has been demonstrated in atherosclerotic plaques, with the higher temperature recorded in acute myocardial infarction (MI). Dietary or treatment interventions reduce heat production. The purpose of the present study was to investigate whether increased plaque temperature is maintained for a prolonged period after MI and the role of statin administration.

Methods

We enrolled 55 patients, 29 with recent MI and 26 with chronic stable angina (CSA). Total cholesterol, C-reactive protein (CRP), interleukin-6 (IL-6) and soluble adhesion molecules were measured in the study population. All patients underwent coronary plaque temperature measurements. Temperature difference (ΔT) was designated as the temperature of the culprit atherosclerotic plaque minus the temperature of the proximal healthy vessel wall.

Results

Under treatment with statins were 19 patients with recent MI and 14 with CSA. In patients with recent MI ΔT was 0.19 ± 0.18°C, while in patients with CSA was 0.10 ± 0.08°C (P = .03). Patients treated with statins had lower ΔT compared to untreated patients (0.10 ± 0.11 versus 0.20 ± 0.18°C, P = .01). Treated patients with recent MI had similar ΔT compared to CSA patients treated with statins (0.13 ± 0.13 versus 0.07 ± .06° C, P = .14), while untreated patients with recent MI had substantially increased ΔT compared to untreated patients with CSA (0.28 ± 0.22 versus 0.14 ± 0.10°C, P = .04). ΔT was positively correlated with CRP (R = 0.50, P < .01), IL-6 (R = 0.58, P < .01), and intercellular adhesion molecule-1 (R = 0.40, P = .03) levels.

Conclusion

Increased plaque temperature is observed for an extended period after myocardial infarction, indicating that the inflammatory process is sustained after plaque rupture. Statins have a beneficial effect after MI on plaque temperature.     

Efficacy of transarterial chemoembolization prior to liver transplantation for hepatocellular carcinoma as found in pathology

BACKGROUND/AIMS: To analyze the efficacy of chemoembolization prior to liver transplantation in liver explants. METHODOLOGY: We reviewed pathological findings in the explanted livers of 21 patients with histologically proven hepatocellular carcinoma and liver cirrhosis who underwent transarterial chemoembolization (TACE) prior to liver transplantation. Nine patients had solitary nodules with a median diameter of 4 cm (range 1.5-7 cm), 7 patients had 2 or 3 tumors with a median total diameter of 5.9 cm (range 3-9 cm) and 5 patients had a multifocal tumor prior to TACE. Pathological up-staging of the clinical tumor classification was documented as "tumor-progression." Concurrence of clinical and pathological findings was documented as "steady disease". "Tumor regression" described those cases in which the pathological classification downgraded the clinical findings. RESULTS: There was no treatment-related morbidity in these patients' group. Tumor regression was proved in 11/21 patients (52.4%) whereas steady disease was observed in 7/21 patients (33.4%). In 5 patients (23.8%) no vital tumor was found by pathological examination. Tumor regression was observed only in one of the five patients having a multifocal tumor prior to TACE. Tumor progression was observed in 3/21 patients (14.3%). CONCLUSIONS: Our data show that TACE provides acceptable local tumor control as bridging treatment before liver transplantation. Although the majority of our patients (15/21, 71.4%) had 2 or more tumor lesions at the beginning of treatment, tumor progression was observed in only a minority (14.3%) of patients. However, multifocal tumors could not be successfully under-staged through this treatment and, furthermore, vital tumor was always observed in pathology; the usefulness of TACE in multifocal disease has to be re-estimated.     

Multiple histopathological skin alterations in a hemodialysis patient with severe pruritus

Pruritus is an alarming symptom in patients with end-stage renal disease (ESRD) accompanied by sleep disturbances and physical and mental disorders. Although its prevalence is very high among hemodialysis patients (90%), its etiology and its successful treatment have been unconfirmed (Melo N, Elias R, Castro M, Romao G, Abensur H. Pruritus in hemodialysis patients: The problem still remains. Hemodial Int. 2009;13:38-42.). Common pruritus etiologies, such as high parathyroid hormone levels, dialysis inadequacy, and iron deficiency are matters of conflict. The case of a hemodialysis patient with consistent itching and a variety of cutaneous eruptions, which after performing skin biopsy were explored and cured, is described. This article addresses the possibility of other causes of pruritus in ESRD and encourages watchful waiting with simple medical interventions, which would relieve patients' symptoms.     

Complications of vascular access in hemodialysis (HD) – aged vs adult patients

Reports on the success of permanent vascular access in elderly HD patients vary considerably. We reviewed the records of 149 patients [62F and 87M] aged 20–89 years old (median 59) who were on hemodialysis for 6–242 (49 median) months, and had undergone 202 vascular access procedures (177 Cimmino-Brescia fistulae and 25 PTFE grafts). Patients were divided into two groups according to the age they started HD. Group A: 48 patients, over 60 years old (range 60–83; median 70) on HD for 43.5, (6–140) months. Group B: 101 patients, under 60 years old, range (15–59) median 46, on HD for 54 (6–242) months. There were no differences between the two groups in terms of gender, primary renal disease, (except polycystic kidney disease), Hct and EPO administration. The initial choice of vascular access, the complications and the technique survival were examined in both groups. Cimmino-Brescia fistulae were used as the first choice of vascular access in all patients except one in group B. PTFE-grafts were the second or third choice in 7/48 (group A) and 15/101 (group B) (p: NS). The only reason for technique failure was vascular thrombosis in both groups (11/48 group A and 31/101 group B p: NS). Other complications were: aneurysms (10/48 and 14/101, p: NS), infections (0/48 and 2/101 p: NS) and edema (0/48 and 6/101, p: NS). Five-year technique survival of the first AV fistula in the two groups was 35% and 45% respectively (log-rank test, p: NS). These findings suggest that: a) A.V. fistula is the first choice of vascular access in aged HD patients; b) There is no difference in vascular access complications across age groups; c) Survival of the first A.V. fistula is independent of age.