Irena Bohuss-Hellerowa - zapomniana postać lwowskiej sceny operowej

Irena Bohuss-Heller was one of the most popular artists of the Lviv opera scene at the turn of the 19th and 20th centuries. She gained popularity not only as a famous opera singer, but also as the wife of the director of Municipial theatre, Ludwik Heller. On the Lviv opera scene she appeared as Ulana in Manru, as tatiana in Eugeniusz Oniegin, as violetta in Traviatta. She also appeared on the stages of Europe, such as teatro Lirico in Milano and London’s Covent Garden. During the First World War she lived in vienna and was gaving singing lessons. When she returned to the Poland (after war), she played only dramatic roles in the Warsaw theatres. At the end of her life she suffered from depression;in June 1926 she committed suicide. Despite the great popularity (at the turn of century) over time she was forgotten

Complexes of silver with histidine and imidazole investigated by the calorimetric and potentiometric methods

The stability constants and enthalpies of formation of silver (I) complexes with histidine and imidazole were determined. Two types of complexes were found: AgL+ and AgL+ 2 . The second is much more stable that is evidenced by the higher stability constants and enthalpies of formation. For the two systems, the respective constants and enthalpies are very close one to another that suggests similar complexation mechanisms. Most probably, the linear complexes through the N-3 pyridinic atoms are being formed. The calorimetric and potentiometric methods gave virtually the same results for the system silver + imidazole. However, the potentiometric method failed for the histidine system. The molecule of histidine has three protonation spots, two of these probably do not take part in the complexation but their protonation equilibria may shift upon joining the ions of silver and influence the pH of the system in that way

Male hypogonadism with its systemic complications

Introduction and purpose: Total lack of testosterone or its level lower than 9-12 mmol/L (250-350 ng/dL) of serum in men is called hypogonadism. Due to the importance of testosterone in male body, hypogonadism usually causes a variety of symptoms, mostly of sexual nature – lack of libido, erectile dysfunction, infertility and associated psychological problems, it can though be the cause of more dangerous changes in the male body. The purpose of this study is to review possible systemic complications of male hypogonadism (with the emphasis on hypogonadotropic hypogonadism) apart from those sex-related.State of knowledge: The lack of testosterone and gonadotropins was proven to cause a number of negative changes in different systems and various clinical situations. It can negatively impact the condition of skeletal system. Although testosterone is widely thought to increase cardiovascular risk some studies show that the hypogonadism has a negative impact on it as well. Some studies hypothesised the role of hypogonadism in anaemia development, but generally it isn’t taken into account in investigation of this condition. Some studies show the impact of hypogonadism on higher risk of some metabolic and endocrine diseases. The most interesting conclusions were found in literature on oncological implications of testosterone and lack of it. It turns out that there is a number of studies showing the positive impact of relatively higher testosterone concentrations while androgen deprivation therapy is the main therapeutic option in advanced prostate cancer.Conclusions: Due to very unpleasant and possibly dangerous complications of hypogonadism endocrinologists should stay alert to signs of hypogonadism to be able to start testosterone replacement in the right moment

Evaluation of the oral cavity state and Candida occurence in generally healthy Polish and foreign dental students

Aim of the study. This study aimed at comparing the oral cavity condition and Candida prevalence in generally healthy Polish and foreign dentistry students and evaluating the relationship between Candida occurrence and the oral cavity condition. Material and methods. 79 dentistry students with no systemic diseases, aged 20–25 (mean 23.5), were examined in the present study. Two groups of examined subjects were specified: 43 Polish students (group I) and 36 foreign students (group II). Group II has been divided into subgroups: IIa – students from Taiwan and IIb – students from Europe and USA. Occurence of oral mucosa lesions, periodontal treatment needs (CPITN), caries prevalence (DMFT) and oral hygiene (OHIs) were investigated. Evaluation of Candida occurrence on the oral mucosa was included in the study. Results. Comparison of the oral cavity condition in Polish and foreign students showed no significant difference, with the exception of the number of teeth with active caries, that was significantly higher in foreign students (D 1,2) than in Polish students (D 0.4). Mean indices rates in the group I were: CPITN 0.9; PUWz 8.7; OHI-s 0.4 in the group II 1.0; 7.0; 0,5, respectively. The most commonly observed oral mucosa lesions, in both groups, were white coated tongue and buccal white line. Candida was found in 38,0% of the subjects, its prevalence was similar in both groups (I – 34.9%, II – 41.7%). No correlation between Candida occurence and oral cavity state was detected. Higher frequency of active caries in Candida carriers was the exception

Wpływ metforminy na przeżywalność komórek raka jajnika linii SKOV-3 oraz ekspresję genów kodujących enzymy związane z O-GlcNAcylacją

Objectives: The aim of the study was to evaluate the cytotoxic effect of metformin on the ovarian cancer cells SKOV-3 and analyze the impact of this compound on the expression of genes coding for O-GlcNAc cycling enzymes, i.e. O-GlcNAc transferase (OGT) and β-N-acetylglucosaminidase (OGA). Materials and methods: Viability and proliferation of control cells and cells treated with metformin were evaluated by MTT test and trypan blue staining. OGT and OGA mRNA expressions analysis was performed using real-time PCR method. Results: A metformin concentration-dependent decrease of SKOV-3 cell viability was observed. The IC50 parameter for metformin cytotoxicity was 14 mM. The SKOV-3 cell doubling time was 45 hours. The cell population treated with 10 mM metformin did not double even after 72 hours. There was no significant difference in mRNA level of OGA between control cells and cells treated with metformin. The OGT mRNA level was significantly higher in cells treated with metformin for 24 hours as compared to the control cells. The increase of OGT mRNA was dependent on time of incubation. Cells treated with metformin for 48 hour showed higher expression of OGT than cells treated for 24 hours. Conclusion: Antiproliferative activity of metformin suggests that this compound may be considered as a candidate for potential chemotherapeutic agent. However, taking into account its impact on the expression of O-GlcNAc transferase, further studies on the molecular mechanism of metformin action are necessary.Cel pracy: Celem pracy była analiza wpływu metforminy na proliferację komórek raka jajnika linii SKOV-3 oraz ekspresję genów, kodujących białka zaangażowane w proces O-GlcNAcylacji – O-GlcNAc transferazy (OGT) i β-N-acetylo-D-glukozaminidazy (OGA). Materiał i metody: Przeżywalność komórek po działaniu metforminy oznaczano metodą spektrofotometryczną z użyciem bromku 3-(4,5-dimetylo-2-tiazolilo)-2,5-difenylo-2H-tetrazoliowego (MTT). Żywotność komórek oceniano stosując metodę barwienia błękitem trypanu. Analizę ekspresji genów OGT i OGA na poziomie mRNA przeprowadzono przy użyciu techniki real-time PCR. Wyniki: Zaobserwowano obniżenie przeżywalności komórek poddanych działaniu metforminy wraz ze wzrostem stosowanych stężeń. Cytotoksyczność metforminy została oszacowana na podstawie parametru IC50 wynoszącego 14mM, w odniesieniu do komórek linii SKOV-3. Czas potrzebny do podwojenia komórek linii SKOV-3 wynosił 45 godzin, natomiast w przypadku prób traktowanych 10 mM metforminą nie uzyskano efektu podwojenia liczby komórek nawet po 72 godzinach. Wniosek: Metformina z uwagi na jej antyproliferacyjne działanie może być rozpatrywana jako potencjalny chemioterapeutyk, niemniej z uwagi na fakt, iż zmienia ona ekspresję jednego z dwóch enzymów odpowiedzialnych za proces O-glikozylacji białek - O-GlcNAc transferazy, należy dogłębnie zbadać ten molekularny mechanizm

Polymorphisms in the transcription factor NRF2 and forearm vasodilator responses in humans

Oxidative stress is integral to the development of endothelial dysfunction and cardiovascular disease. As NRF2 is a key transcription factor in antioxidant defense, we aimed to determine whether polymorphisms within the promoter region of the gene encoding NRF2 (NFE2L2) would significantly modify vasodilator responses in humans

Amyloidoza łańcuchów lekkich immunoglobulin z punktu widzenia kardiologa

Light-chain amyloidosis (amyloidosis AL) is diagnosed in approx. 70% of patients with cardiac amyloidosis. This type of amyloidosis has the worst prognosis, especially if the diagnosis is made in advanced stages. The majority of patients are referred to a cardiologist, but unfortunately only every fifth of them has the proper diagnosis. Therefore, strategies promoting early diagnosis are important. One of them is the measurement of serum free light chains concentration in every patient with heart failure with preserved ejection fraction. The acknowledgement of free light chains (FLCs) cardiotoxicity rendered the picture of AL amyloidosis from infiltrative cardiomyopathy into a toxic one. Best improvement in regard to heart failure is achieved upon hematological treatment resulting in decrease of FLCs concentration. Therefore, cardiological treatment is rather a supportive therapy. The role of cardiologist is the rapid diagnosis of the disease and referral of the patient to the hematologist. The standard heart failure treatment encompassing use of beta-blockers and angiotensin converting enzyme inhibitors aggravates orthostatic hypotension and congestion. Instead, up-to-date hematological treatment improves the prognosis of AL amyloidosis markedly, as long as early diagnosis is made.Amyloidozę łańcuchów lekkich (amyloidozę AL) rozpoznaje się u około 70% pacjentów z amyloidozą serca. Ta postać choroby wiąże się z najgorszym rokowaniem, szczególnie jeśli wykrywa się ją na zaawansowanym etapie. Kardiolog jest najczęściej odwiedzanym specjalistą przez pacjentów z amyloidozą AL. Niestety tylko u co piątego pacjenta jest stawiana właściwa diagnoza. Dlatego ważne jest, aby promować działania umożliwiające wczesne stwierdzenie choroby. Należy do nich oznaczanie wolnych łańcuchów lekkich (FLC) w surowicy u pacjentów z niewydolnością sercaz zachowaną frakcją wyrzutową. Wykazanie kardiotoksycznej roli FLC zmieniło postrzeganie amyloidozy AL jako choroby polegającej wyłącznie na pozakomórkowym gromadzeniu się nieprawidłowych złogów białkowych. Największą poprawę funkcji serca uzyskuje się, obniżając stężenie FLC w surowicy poprzez leczenie cytoredukcyjne. Leczenie kardiologiczne ma znaczenie uzupełniające. Rola kardiologa sprowadza się do jak najszybszego rozpoznania choroby i przekazania pacjenta do hematologa. Standardowa farmakoterapia niewydolności serca, obejmująca beta-adrenolityki i inhibitory konwertazy angiotensyny, u pacjentów z amyloidozą wywołuje nasilenie hipotensji ortostatycznej i objawów zastoinowych. Natomiast dzięki nowoczesnemu leczeniu cytoredukcyjnemu i antyamyloidowemu istotnie poprawiły się wyniki leczenia, pod warunkiem wczesnego rozpoznania amyloidozy AL

„Żyje się tylko chwilę” — Did Halina Poświatowska Really Die Young?

The poet Halina Poświatowska for the most of her 32-years life overcame limitations associated with acquiring a mitral valve defect. She spent many months in hospitals, nursing homes and in the family home. In spite of common opinion she was not living for a very short time indeed when taking into account the state of cardiac surgery in the middle of the last century. The length of her life as a woman with serious heart defect, which caused additional complications in the functioning of the circulatory system, can not be compared to the life length of healthy people.Udostępnienie publikacji Wydawnictwa Uniwersytetu Łódzkiego finansowane w ramach projektu „Doskonałość naukowa kluczem do doskonałości kształcenia”. Projekt realizowany jest ze środków Europejskiego Funduszu Społecznego w ramach Programu Operacyjnego Wiedza Edukacja Rozwój; nr umowy: POWER.03.05.00-00-Z092/17-00

Ludomir Sawicki’s (1884-1928) contribution to the organization of polish science in the field of geography

The article aims to present the activities of Ludomir Sawicki (1884-1928), professor of Geography at the Jagiellonian University, with particular emphasis on his contribution to the organization of Polish science in this field. Ludomir Sawicki was born and raised in Vienna, but after graduating and defending his doctorate, he came to Krakow and started working as a junior high school teacher. Later - after obtaining his habilitation - he was a lecturer and professor at the Jagiellonian University, where he started organizing the Institute of Geography. He corresponded with Eugeniusz Romer regarding the publication of the Geographical and Statistical Atlas of Poland (Geograficzno-statystyczny atlas Polski). He actively participated in the works of many significant Polish organizations, including the collaboration with the Polish Country Lovers’ Society (PTK) in Warsaw, and was one of the founders of the Polish Geographical Society. He participated in geographic congresses in Geneva (1908), London (1911), Rome (1913) and Cairo (1925), and he organized the Second Congress of Slavic Geographers and Ethnographers, which took place in Krakow in 1927. He was also involved in expeditionary endeavors. He founded the Orbis printing house in Krakow, which published not only recognized works in the field of geography but also teaching aids for schools. His extensive activity infl uenced generations of students, including Wiktor Ormicki and Antoni Wrzosek