Differences in BNT126b2 and ChAdOx1 Homologous Vaccination Antibody Response among Teachers in Poznan, Poland.

Children are among the best vectors to spread respiratory viruses, including emerging variants of SARS-CoV-2 due to the asymptomatic or relatively mild course of infection and simultaneously high titres of pathogens in the respiratory tract. Therefore, individuals who have constant contact with children, e.g., teachers should be vaccinated against COVID-19 as essential workers within the first phases of a vaccination campaign. In Poland, primary and secondary school teachers were vaccinated with ChAdOx1 from February 2021 with a three month interval between the two doses, while lecturers at medical universities, who are simultaneously healthcare workers, received the BNT126b2 vaccine from December 2020 with three weeks between the first and second doses. The aim of this study was to compare the antibody responses at two weeks and three months after vaccination and to estimate the vaccine effectiveness against COVID-19 among infection-naïve teachers vaccinated with mRNA and a vector vaccine. We found that the anti-SARS-CoV-2 spike protein antibodies were significantly higher among the lecturers but antibody waning was slower among the schoolteachers. However, those vaccinated with ChAdOx1 complained significantly more often of vaccine side effects. In addition, during the three months after the second vaccine dose no study participants were infected with SARS-CoV-2. The BNT126b2 vaccine gave higher antibody titres in comparison with ChAdOx1 but protection against COVID-19 in both cases was similar. Moreover, we did not find any anti-SARS-CoV-2 nucleoprotein antibodies at two weeks as well as at three months after vaccination among the study participants, which shows a very high vaccine effectiveness in the occupational group with a high SARS-CoV-2-infection risk.

Modeling the effect of adsorption on the degradation rate of propiconazole in profiles of Polish Luvisols.

Laboratory adsorption and degradation studies were carried out to determine the effect of time-dependent adsorption on propiconazole degradation rates in samples from three Polish Luvisols. Strong propiconazole adsorption (organic carbon normalized adsorption coefficients Koc in the range of 1217-7777 mL/g) was observed in batch experiments, with a typical biphasic mechanism with a fast initial step followed by the time-dependent step, which finished within 48 h in the majority of soils. The time-dependent step observed in incubation experiments was longer (duration from 5 to 23 d), and its contribution to total adsorption was from 20% to 34%. The half-lives obtained at 25 °C and 40% maximum water holding capacity of soil, were in the range of 34.7-112.9 d in the Ap horizon and in the range of 42.3-448.8 d for subsoils. The very strong correlations, between degradation rates in pore water and soil organic carbon and soil microbial activity, indicated that microbial degradation of propiconazole was most likely the only significant process responsible for the decay of this compound under aerobic conditions for the whole of the examined soil profiles. Modeling of the processes showed that only models coupling adsorption and degradation were able to correctly describe the experimental data. The analysis of the bioavailability factor values showed that degradation was not limited by the rate of propiconazole desorption from soil, but sorption affected the degradation rate by decreasing its availability for microorganisms.

Sexual functioning in young women in the context of breast cancer treatment.

Breast cancer is the most common type of cancer among women worldwide. The number of breast cancer survivors has been growing because of earlier detection and improved treatment. Young women under 50 years of age account for relatively small percentage of all newly diagnosed breast cancer patients. However, their medical and psychosocial context of the disease is unique. Breast cancer is diagnosed at the most productive time in life. Concerns about childbearing, partner rejection, sexual function, body image, sexual attractiveness and career are common. For all these reasons experience of breast cancer diagnosis and treatment among young women requires special attention. Researches indicate that oncological treatment may negatively affect female sexual functioning. Chemotherapy is one of the greatest risk factors of sexual dysfunctions, especially when it results in medication-induced menopause. The duration and severity of sexual problems depend on a wide variety of factors: medical, psychological and interpersonal. These side effects may last for many years after the end of treatment. It is known that breast cancer affects both patients and their partners. The first sexual experience after surgery may be a turning point in sexual adaptation in couples. Communication is crucial in this process. More knowledge about sexual difficulties and sexual adaptation process of young breast cancer survivors (YBCSs) and their partners is needed. Knowing protective and risk factors is necessary to identify couples at risk for sexual dysfunctions in order to professionally support them in the best way and at the right time.

Sexual functioning of testicular cancer survivors and their partners - A review of literature.

BACKGROUND: Testicular cancer (TC) is the most common cancer in the 25-40 age group, with peak morbidity at around 30 years of age. It is a period of highest productivity, when sexual sphere is an important aspect of life. The disease, invasive treatment and its consequences interfere with this sphere. AIM: The aim of this paper was to review the most recent studies on the sexual functioning of patients treated for testicular cancer and their partners published in English language scientific journals in the period of 1989-2010. RESULTS: Numerous studies report that men cured from testicular cancer are at risk of sexual disorders. Agents of psychological nature play an important role in the occurrence and persistence of sexual dysfunctions. Being in permanent relationship is a protective factor, while single persons are marked with particular predisposition to such dysfunctions. Sexual and marital satisfaction of TC survivors and their partners are mutually correlated. CONCLUSION: With a growing number of TC survivors, a thorough investigation is required into their sexuality, both in an individual and dyadic dimension, so as to improve the quality of life of the affected young men, who take on their new social and professional roles in the period of highest reproductiveness.

"Smart" polymeric nanospheres as new materials for possible biomedical applications.

Novel random terpolymers of N-isopropylacrylamide (NIPAM), sodium 2-acrylamido-2-methyl-1-propanesulfonate (AMPS), and cinnamoyloxyethylmethacrylate (CEMA) were synthesized by free radical copolymerization using AIBN as an initiator. Five terpolymers were obtained by copolymerization of the monomer mixtures containing a fixed amount of 10 mol % of AMPS while the content of CEMA ranged from 5 to 25 mol % and was changed in 5 mol % increments. The terpolymers obtained are water-soluble. Because of their amphiphilic nature they undergo self-organization in the aqueous solution with the formation of micelles capable of solubilizing sparingly water soluble organic compounds, such as drugs. The terpolymers are susceptible to three external stimuli, i.e. temperature, ionic strength and UV light. Due to the presence of NIPAM in the terpolymers they display the lower critical solution temperature (LCST), the presence of AMPS makes them sensitive to the ionic strength of the solution, while the light-responsiveness of the terpolymers is due to the presence of cinnamoyl chromophores, which undergo photodimerization when irradiated with UV light at about 280 nm. Application of any of these stimuli alone or in combination with other stimuli allows changing the copolymer properties in a controlled way.