Tomasz Piorunek

Oral antibiotic therapy improves fat absorption in cystic fibrosis patients with small intestine bacterial overgrowth.

BACKGROUND The aim of the present study was to assess the influence of antibiotic therapy on fat assimilation in cystic fibrosis (CF) patients with small intestine bacterial overgrowth (SIBO). MATERIALS AND METHODS Twenty six pancreatic insufficient CF patients with bronchopulmonary exacerbation and diagnosed SIBO (positive hydrogen-methane breath test) entered the study. (13)C mixed triglyceride breath test was performed before and after antibiotic therapy. Sixteen subjects were treated intravenously (ceftazidime and amikacin), ten patients orally (ciprofloxacin). RESULTS Cumulative percentage dose recovery changed significantly in the subgroup receiving antibiotics orally [median (mean±SEM): 3.6% (4.5±1.3%) vs. 7.2 (6.9±1.6%); p=0.019]. In the subgroup with intravenous drug administration, the tendency towards improvement was noted [2.7 (4.3±1.5%) vs. 5.2 (5.7±0.8%); p=0.109]. CONCLUSIONS Antibiotic therapy applied in CF patients with SIBO in the course of pulmonary exacerbation results in a significant improvement of fat digestion and absorption.

Plasma Selectins in Patients with Obstructive Sleep Apnea

Obstructive sleep apnea (OSA) is an independent risk factor in the pathogenesis of -cardiovascular diseases. The aim of the study was to analyze three specific adhesion molecules involved in the development of an atherosclerotic plaque: E-selectin (endothelium), L-selectin (leukocyte surface), and P-selectin (from platelet), circulating in plasma in patients at different OSA severity. Eighty non-smoking male Caucasians aged 30-64 were enrolled into the study after clinical, biochemical, and polysomnographic examinations. The patients were divided into four groups based on the results of apnea/hypopnea index (AHI): OSA-0 with AHI 0-4.9 (n = 20), OSA-1 with AHI 5-15 (n = 21), OSA-2 with AHI 16-30 (n = 18), OSA-3 with AHI ≥ 31 (n = 21). Complete blood count, oral glucose tolerance test, fasting lipid profile, C-reactive protein and insulin, and plasma concentrations of soluble E-selectin, P-selectin and L-selectin were measured. We found a progressive increase in the concentrations of all three selectins with the severity of OSA. In conclusion, the level of plasma adhesion molecules may be indicative of OSA severity and may contribute to cardiovascular sequelae.

Neurological Paraneoplastic Syndromes in Lung Cancer Patients

Lung cancer is recognized among the most frequent causes of paraneoplastic neurological syndromes (PNS). Neurological syndromes in subjects with systemic malignancy remain a clinical and diagnostic challenge. The aim of the study was to evaluate the frequency of NPS, their clinical manifestation and association with onconeural antibodies in patients with lung cancer. Fifty patients hospitalized with the diagnosis of PNS participated in the study. Neurological evaluation consisted of the Rankin scale (mRS), the Barthel index (BI), and testing for the presence of onconeural antibodies by means of indirect immunofluorescence, as screening, and Western blotting as confirmation. The majority of lung cancer patients (64%) aged 62 ± 10 had NPS symptoms. Their neurological condition and daily living activities were reasonable: mRS (1.0; 0.0-4.0) and BI (100; 7.4-100) scores. Classical PNS were found in 30% of cases and included sensory neuropathy (16%), paraneoplastic cerebellar degeneration (12%) as the most frequent symptoms. Autoimmune reaction was observed in 42% of lung cancer patients and in 20% was represented by well-characterized onconeural antibodies. Anti-Hu antibody was identified as the most frequent. In conclusion, PNS signs in lung cancer patients have both classical and non-classical features. In the course of SCLC only well-characterized onconeural antibodies were identified. The presence of well-characterized onconeural antibodies is strongly associated with classical features of PNS.

Blood Antioxidant Status, Dysglycemia and Obstructive Sleep Apnea

Obstructive sleep apnea (OSA) patients present increased cardiovascular morbidity and mortality. Oxidative stress is involved in OSA and cardiovascular pathology. The aim of the study was to assess oxidative stress markers in the blood of OSA males during oral glucose tolerance test (OGTT). The study involved OSA-suspected obese males (BMI ≥ 25 kg/m(2)) aged 35-64, with no acute or chronic disorders, appointed for polysomnography to diagnose OSA (AHI ≥ 5). The results of OGTT allowed to select prediabetic (Pre) subjects and normal glucose tolerance (N), excluding newly diagnosed diabetes. Blood was collected at 0 min (fasting) and 120 min of the test. Plasma glucose, total antioxidant status (TAS), thiobarbituric acid-reacting substances (TBARS), and activity of superoxide dismutase-1 (SOD) in erythrocytes, were determined at the two time points and the difference (D) between the 120 and 0 min time points was calculated for either oxidative stress variable (D-TAS, D-SOD and D-TBARS). Fasting serum insulin and lipids also were measured fasting. There were four groups of subjects, each consisting of 22 individuals N-OSA-neg(ative), N-OSA-pos(itive), Pre-OSA-neg and Pre-OSA-pos. The N-OSA-pos and Pre-OSA-pos subjects demonstrated decreased SOD-0 compared with OSA-negative groups. In N-OSA-neg and N-OSA-pos groups, the positive differences D-SOD and D-TAS were observed, while Pre-OSA subjects presented negative differences. In conclusion, prediabetic OSA patients may consume blood antioxidant factors to counter the effects of oxidative stress, more than individuals with normal glucose tolerance.

Impulse oscillometry in the diagnosis of airway resistance in chronic obstructive pulmonary disease.

Spirometry is a standard lung function test for diagnosis and staging of chronic obstructive pulmonary disease (COPD). Impulse oscillometry (IOS) can be complementary to spirometry, especially in patients at advanced age and with physical or mental disorders who cannot be diagnosed through spirometry. The aim of this study was to compare IOS and spirometry in the assessment of airway obstruction in COPD. The study was conducted in 112 stable COPD patients, including 29 females and 83 males of the mean age of 69±11 years. The oscillometric evaluation included total (R5), peripheral (R5-R20), and negative reactance (X5), which were compared with the predicted forced expiratory volume in 1 s (FEV1%pred). The findings show a significantly negative correlation between FEV1%pred and the R5, R5-R20, and X5. COPD patients had increased R5, R5-R20, and X5. The severity of bronchial obstruction found by impulse oscillometry correlated well the spirometric assessment. IOS is a simple to perform test that may be helpful for functional examination of COPD patients.

Treatment of advanced lung cancer by external beam radiotherapy and high dose rate (HDR) brachytherapy

Abstract Purpose Brachytherapy is a highly valued and effective palliative treatment for lung cancer, especially as it reduces intensity of dyspnoea and other symptoms arising from tumours inside the respiratory tract. In some cases, due to the location of the lesion brachytherapy is a treatment of choice. However, its curative role is unclear. A combination treatment of brachytherapy and an external beam irradiaton may play a significant role when the mediastinal lymph nodes are involved. The paper presents the results of treatment of advanced lung cancer patients by external beam irradiation and brachytherapy, and the role of this palliative treatment is discussed. Material and methods Between May 1999 and March 2000 at the Greatpoland Cancer Centre fifteen patients with advanced lung cancer were treated by HDR brachytherapy and palliative external beam irradiation using the method of hypofractionation. The patients’ age ranged between 39 to 80 years, mean: 54.3 years. The treatment consisted of external beam irradiation (total dose of 20–30 Gy), and a weekly high dose rate (HDR) brachytherapy (three fractions of 7.5 or 10 Gy, at 1 cm from the source). In three cases the treatment was started with external irradiation, whereas in 12 cases the first stage was brachytherapy. During the patients’ clinical and endobronchial follow-up of 1, 3 and 6 months, local remission and regression of difficulties in breathing, cough, pain and haemoptysis were assessed. Results In all our patients subjective improvement (regression of all symptoms) was found on the first check-up following treatment. In one case complete remission of the tumour lasted for over 6 months, in 9 cases partial remission and in two cases progression were found. Severe complications due to the high total local dose were not observed. Conclusions Combined palliative treatment (intraluminal brachytherapy and external beam irradiation) in advanced lung cancer was an efficient method that led to regression of symptoms and improvement of well-being in many patients.

The repeated use of high dose rate brachytherapy for locally recurrent lung cancer

Summary Purpose To assess the effect of repeated palliative treatment with high dose rate brachytherapy in patients with advanced lung cancer. Material and Methods Fifty-six patients, 25.3% of a total of 221 patients treated for lung cancer with HDR brachytherapy were treated twice, using High Dose Rate Brachytherapy. All patients were qualified for repeated brachytherapy due to the recurrence of intrabronchial tumour and acceptable remissions after the first treatment. The survival times were compared with selected clinical data. Correlations between survival times and subjective breathing difficulties were analyzed separately. Results The median survival time in the whole group of patients was 8.9 months. The period of obtaining a positive clinical response was correlated with a longer survival time (log-rank test, p=0.0009, F Cox test, p=0.007). In the multivariate analysis other statistically important prognostic factors were also included: the clinical stage of the primary tumour (F Cox test, p=0.04), and the interval between the first and second treatment (F Cox, p=0.004). None of the analyzed factors (dyspnoea, cough, haemoptysis and pain) had any influence on survival. Conclusion Repeated HDR brachytherapy in advanced lung cancer was an efficient method that in many patients led to regression of symptoms and improvement in life quality.

Dietary and cardio-metabolic risk factors in patients with Obstructive Sleep Apnea: cross-sectional study

Background Little is known about the role of dietary intake in obstructive sleep apnea (OSA), which could prove important in improving clinical outcomes for people with obesity and/or cardiovascular disease within these populations. Reduction in energy intake typically results in weight loss, markedly improving metabolic parameters and ameliorating OSA severity. The aim of this study was to evaluate the association of dietary and cardio-metabolic risk factors with OSA severity. Methods This was a cross-sectional study. A total of 75 volunteers at risk of OSA were recruited from 153 patients suffering from sleep disturbance at the Department of Pulmonology, Allergology and Respiratory Oncology at the Poznan University of Medical Sciences. Polysomnography was used for OSA diagnosis. Sleep quality was assessed by the Pittsburgh Sleep Quality Index. Blood pressure, parameters of glucose (fasting glucose, glucose tolerance test) and lipid metabolism (TC, LDL-C, HDL-C, TG) were assessed using routine enzymatic methods. Dietary intake was evaluated by 24-hr dietary recalls and Food Frequency Questionnaire. Ordinal logistic regression models were used for association of background characteristics and dietary intake with OSA severity. All analyses were adjusted for age, sex, BMI, smoking and alcohol intake. Results A higher percentage of smokers were observed in patients with mild OSA, while alcohol intake was the highest in severe OSA patients. Approximately 60% of the studied patients were self-reported poor sleepers. Results from ordinal logistic regression models showed that higher intakes of alcohol intake were associated with increased odds of severe OSA; whereas higher HDL-C levels were associated with lower odds (OR 0.01; 95% CI [0.0003–0.55]). Significantly higher odds of high OSA severity were observed in patients with disturbed sleep stages and obstructive sleep apnea. Moreover, the investigation of nutrient intake in relation to OSA severity showed that a higher intake of dietary fiber was associated with decreased OSA severity (OR 0.84; 95% CI [0.71–0.98]). Conclusions The severity of OSA is related to higher alcohol consumption and disturbed sleep. The significantly lower dietary fiber intake in patients with severe OSA is of particular importance for dietary consulting in clinical practice, which may positively influence cardiometabolic outcomes.

Quality of life, depression and dietary intake in Obstructive Sleep Apnea patients

BackgroundThe aim of this study was to analyze the association between depression, quality of life and dietary intake in newly diagnosed Obstructive Sleep Apnea (OSA) patients.MethodsFrom 153 eligible patients suffering from sleep disturbances, 64 met inclusion and exclusion criteria. The polysomnography was used for OSA diagnosis. The quality of life (QOL) was assessed by WHOQOL-BREF questionnaire, self-reported chronotype by morningness-eveningness questionnaire and level of depression by Beck’s Depression Inventory. Blood pressure and parameters of glucose and lipid metabolism were assessed by routine methods. The dietary intake was evaluated by 24-hr dietary recalls.ResultsSignificantly negative associations were found between depression inventory and QOL. Better QOL for physical health and social relationships was observed in the “definitely morning” chronotype. The “morning type” of patients was positively related to the intake of fat, monounsaturated fatty acids and vitamin B12. Correlations between QOL and diastolic blood pressure, HDL-cholesterol, TG, fasting glucose, as well as protein and vitamin B6 intake were found.ConclusionsIn conclusion, both chornotype and depression influence QOL in OSA patients where morning type is associated with better physical health and social relationships and increase in depression index deteriorate physical health, psychological and social relationship QOL domains. QOL as well as depression and chornotype are also influenced by selected cardio-metabolic factors and dietary intake.

Chemotherapy-induced peripheral neuropathy - diagnosis, evolution and treatment.

Chemotherapy-induced peripheral neuropathy (CIPN) is one of the most frequent neurologic complications experienced by patients receiving antineoplastic drugs. Involvement of the peripheral nerves may have an important impact on daily activi-ties and lead to severe impairment of the patients quality of life (QoL). It seems to be of crucial importance to make a correct and early diagnosis of polyneuropathy and, if possible, spare the patient unnecessary suffering or loss of function. In the preceding article we have presented epidemiology, grading and pathogenesis of the toxic CIPN. The purpose of this article is to review current knowledge of diagnostic techniques, prevention and management strategies in the context of CIPN.