The effect of exercise in some sport branches on urinary second messenger cyclic nucleotide levels

Abstract: In this study, the possible effects of exercise on hormonal secretions in some sport branches were investigated on the basis of urinary cyclic nucleotide (cAMP and cGMP) excretion, since it was thought that the total, ultimate effects of secreted hormones, under the effect of exercise stress, may be estimated by means of the changes in the second messenger, cAMP, and cGMP, concentrations in urine. A total of 60 subjects from different sport branches were included in the study, and pre-and post-training urinary cyclic nucleotide levels of them were determined by EIA method. The differences in cAMP and cGMP between pre-training and post-training periods were statistically significant (p < 0.05 for both), with the post-training levels being higher. The increased post-training cyclic nucleotide concentrations in urine showed that a complex hormonal response occurs as a result of both metabolic state and the exercise stress in sporters. It was concluded that the complicated hormonal status of the sporters may be explained partly by determining the second messenger concentrations. Since, the present study looking at this perspective is a preliminary one in this area, the determination of all second messenger changes for the evaluation of the total hormonal status of sporters is needed in future

The effect of exercise in some sport branches on urinary second messenger cyclic nucleotide levels

In this study, the possible effects of exercise on hormonal secretions in some sport branches were investigated on the basis of urinary cyclic nucleotide (cAMP and cGMP) excretion, since it was thought that the total, ultimate effects of secreted hormones, under the effect of exercise stress, may be estimated by means of the changes in the second messenger, cAMP, and cGMP, concentrations in urine. A total of 60 subjects from different sport branches were included in the study, and pre- and post-training urinary cyclic nucleotide levels of them were determined by EIA method. The differences in cAMP and cGMP between pre-training and post-training periods were statistically significant (p < 0.05 for both), with the post-training levels being higher. The increased post-training cyclic nucleotide concentrations in urine showed that a complex hormonal response occurs as a result of both metabolic state and the exercise stress in sporters. It was concluded that the complicated hormonal status of the sporters may be explained partly by determining the second messenger concentrations. Since, the present study looking at this perspective is a preliminary one in this area, the determination of all second messenger changes for the evaluation of the total hormonal status of sporters is needed in future

Is there a relationship between ACTN3 R577X gene polymorphism and sarcopenia?

Background and aims The alpha-actinin (ACTN) genes are important structural components of the sarcomere. Sarcopenia is a common geriatric syndrome characterized by morbidity and mortality. Our study aimed to examine the relationship between the ACTN3 R577X gene and sarcopenia in community-dwelling Turkish adults. Methods We designed a cross-sectional study among the patients aged >= 65 years admitted to the geriatric outpatient clinic. We recorded the general characteristics of the patients. We used the Jamar hand dynamometer to evaluate handgrip strength. Body composition was estimated using bioimpedance analysis. Sarcopenia was diagnosed according to the European Working Group on Sarcopenia in Older People2 criteria with population-specific cutoffs. We performed analyses of low muscle mass (LMM) with skeletal muscle mass index adjusted for body mass index [SMMI(BMI)]. We further categorized the SMMI(BMI) cutoffs into tenths. The analyzes were performed according to the 90th percentile SMMI(BMI) cutoffs. Peripheral blood samples were collected to determine the ACTN3 genotypes. Results 197 participants were included [mean age: 76.3 +/- 6.1 years, 151 (76.6%) women]. The proportions of the ACTN3 genotypes were as follows: RX (45.1%) > RR (31%) > XX (23.9%). The significant difference between genotypes was found only for low SMMI(BMI) according to the 90th percentile (p = 0.025). In multivariate analysis, only gender (female) was independently associated with LMM. Conclusion We did not find any association between ACTN3 R577X gene polymorphism and probable sarcopenia, confirmed sarcopenia and LMM. Besides, much more research is needed to reveal how ethnicity affects the muscles of older adults with ACTN3 R577X gene polymorphism

Serotype distribution of Streptococcus pneumoniae and pneumococcal vaccine coverage in adults in Turkey between 2015 and 2018

AbstractObjective To evaluate the serotype distribution and antibiotic resistance in pneumococcal infections in adults and to provide a perspective regarding serotype coverage of both current and future pneumococcal vaccines.Patients and methods This passive surveillance study was conducted with the Streptococcus pneumoniae strains isolated from the specimens of patients with pneumonia (materials isolated from bronchoalveolar lavage), bacteraemia, meningitis, pleuritis and peritonitis between 2015 and 2018. Serogrouping and serotyping were performed by latex particle agglutination and by conventional Quellung reaction using commercial type-specific antisera, respectively. The strains were analysed for penicillin, cefotaxime, erythromycin and moxifloxacin susceptibilities by E-test.Results In the whole study group (410 samples from adults aged ≥18 years), the most frequent serotypes were 3 (14.1%), 19 F (12%) and 1 (9.3%). The vaccine coverage for PCV13, PCV15, PCV20 and PPV23 was 63.9%, 66.6%, 74.1% and 75.9%, respectively, in all isolates. Penicillin non-susceptibility in invasive pneumococcal disease (IPD) was 70.8% and 57.1% in the patients aged <65 and ≥65 years, respectively. About 21.1% and 4.3% of the patients with and without IPD had cefotaxime resistance. Non-susceptibility to erythromycin and moxifloxacin was 38.2% and 1.2%, respectively.Conclusions The results revealed that novel PCV vaccines may provide improved coverage as compared with the currently available vaccine, PCV13. The significant antibiotic resistance rates imply the need to extend the serotype coverage of the vaccines. Continuing the surveillance in pneumococcal diseases is critical to explore the serotype distribution and incidence changes of IPD cases in the population and to inform policy makers to make necessary improvements in the national immunization programmes.Key messagesThis multicentre study demonstrated the most recent serotype distribution and antibiotic resistance in adult population in Turkey.Shifting from PCV13 to novel conjugated vaccines will significantly increase the coverage.Continuing the surveillance in pneumococcal diseases is critical to explore the serotype distribution changes and the incidence of cases with invasive pneumococcal disease in the population

Serotype distribution of Streptococcus pneumoniae in children with invasive diseases in Turkey: 2008-2014

WOS: 000371745700019PubMed ID: 26325175Successful vaccination policies for protection from invasive pneumococcal diseases (IPD) dependent on determination of the exact serotype distribution in each country. We aimed to identify serotypes of pneumococcal strains causing IPD in children in Turkey and emphasize the change in the serotypes before and after vaccination with 7-valent pneumococcal conjugate vaccine (PCV-7) was included and PCV-13 was newly changed in Turkish National Immunization Program. Streptococcus pneumoniae strains were isolated at 22 different hospitals of Turkey, which provide healthcare services to approximately 65% of the Turkish population. Of the 335 diagnosed cases with S. pneumoniae over the whole period of 2008-2014, the most common vaccine serotypes were 19F (15.8%), 6B (5.9%), 14 (5.9%), and 3 (5.9%). During the first 5y of age, which is the target population for vaccination, the potential serotype coverage ranged from 57.5 % to 36.8%, from 65.0% to 44.7%, and from 77.4% to 60.5% for PCV-7, PCV-10, and PCV-13 in 2008-2014, respectively. The ratio of non-vaccine serotypes was 27.2% in 2008-2010 whereas was 37.6% in 2011-2014 (p=0.045). S. penumoniae serotypes was less non-susceptible to penicillin as compared to our previous results (33.7vs 16.5 %, p=0.001). The reduction of those serotype coverage in years may be attributed to increasing vaccinated children in Turkey and the increasing non-vaccine serotype may be explained by serotype replacement. Our ongoing IPD surveillance is a significant source of information for the decision-making processes on pneumococcal vaccination.PfizerPfizerThis study was supported by Pfizer

Serotype distribution ofStreptococcus pneumoniain children with invasive disease in Turkey: 2015-2018

Objectives To determine the serotype distribution of pneumococcus causing invasive pneumococcal disease (meningitidis, bacteremia and empyema) in children in Turkey, and to observe potential changes in this distribution in time to guide effective vaccine strategies. Methods We surveyedS. pneumoniaewith conventional bacteriological techniques and with real-time polymerase chain reaction (RT-PCR) in samples of cerebrospinal fluid (CSF), blood and pleural fluid.S. pneumoniaestrains were isolated from 33 different hospitals in Turkey, which are giving health services to approximately 60% of the Turkish population. Results A total of 167 cases were diagnosed with invasive pneumococcal disease between 2015 and 2018. We diagnosed 52 (31.1%) patients with meningitis, 104 (62.2%) patients with bacteremia, and 11 (6.6%) patients with empyema. Thirty-three percent of them were less than 2 years old and 56% less than 5 years old. Overall PCV13 serotypes accounted for 56.2% (94/167). The most common serotypes were 19 F (11.9%), 1 (10.7%) and 3 (10.1%). Conclusions Besides the increasing frequency of non-vaccine serotypes, vaccine serotypes continue to be a problem for Turkey despite routine and high-rate vaccination with PCV13 and significant reduction reported for the incidence of IPD in young children. Since new candidate pneumococcal conjugate vaccines with more serotype antigens are being developed, continuing IPD surveillance is a significant source of information for decision-making processes on pneumococcal vaccination

Serotypes of Streptococcus pneumoniae Isolates from Children with Invasive Pneumococcal Disease in Turkey: Baseline Evaluation of the Introduction of the Pneumococcal Conjugate Vaccine Nationwide ▿ ‖

Before use of the pneumococcal conjugate vaccine PCV7 became widespread in Turkey, 202 invasive pneumococcus isolates were analyzed. The most common serotypes were 19F and 6B. In children ≤2 years of age, the potential coverage rate of PCV7 was 69.5%. The most frequent non-PCV7 serotypes were 19A, 3, 1, 6A, and 8