Zainteresowania i świadomość czytelnicza słuchaczy grup polonijnych

Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

Influence of Phosvitin and Calcium Gluconate Concentration on Permeation and Intestinal Absorption of Calcium Ions

The effect of egg yolk phosvitin on the permeation and absorption of calcium was investigated in vitro in relation to calcium gluconate concentration. Obtained results indicate that phosvitin significantly reduces the intestinal calcium absorption from 1 and 10 mM of calcium gluconate solution. It is associated with the formation of the complex of Ca (II) ions with phosvitin. The process of calcium permeation increases under phosvitin influence when calcium gluconate concentrations rise up to 10 mM. At a higher concentration of calcium gluconate (20 mM), no effect of phosvitin was seen on permeation of calcium ions

Blood Stream Infections in Allogeneic Hematopoietic Stem Cell Transplant Recipients: Reemergence of Gram-Negative Rods and Increasing Antibiotic Resistance

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Hematopoietic stem cell transplantation for autoimmune diseases in the time of COVID-19: EBMT guidelines and recommendations

Coronavirus disease-19 (COVID-19), caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), represents one of the biggest challenges of 21st century, threatening public health around the globe. Increasing age and presence of co-morbidities are reported risk factors for severe disease and mortality, along with autoimmune diseases (ADs) and immunosuppressive treatments such as haematopoietic stem cell transplantation (HSCT), which are also associated with adverse outcomes. We review the impact of the pandemic on specific groups of patients with neurological, rheumatological, and gastroenterological indications, along with the challenges delivering HSCT in adult and pediatric populations. Moving forward, we developed consensus-based guidelines and recommendations for best practice and quality of patient care in order to support clinicians, scientists, and their multidisciplinary teams, as well as patients and their carers. These guidelines aim to support national and international organizations related to autoimmune diseases and local clinical teams delivering HSCT. Areas of unmet need and future research questions are also highlighted. The waves of the COVID-19 pandemic are predicted to be followed by an “endemic” phase and therefore an ongoing risk within a “new normality”. These recommendations reflect currently available evidence, coupled with expert opinion, and will be revised according to necessary modifications in practice

Estimation of the degree of extremality of high-water flows in selected rivers in Poland in 1971-2006

The paper presents the results of estimation and comparison of risk of extreme floods on rivers of various hydrological regime. The hypothesis that extreme events occur with the same frequency in all rivers was rejected. The limit between extreme and common floods on 30 rivers from different geographical regions of Poland was defined on the basis of standardized flow-duration curve in 1971-2006. These analyses resulted in designing five curve groups. Four measures of flood magnitude have been proposed. The time distribution of extreme events during the last decades was estimated for the most dynamic rivers

Factors enhancing calcium's absorption

The inappropriate supply of calcium influences bone loss and the risk of the osteoporosis. Health benefits expected from calcium depend on the amount of consumed calcium and also are strongly dependent on the possibility of organism to absorb calcium. Many studies devoted to this topic do not consider the absorbed calcium amount indeed which on average gives 10-75% of total calcium consumed. In order to make calcium absorption higher and more effective, researchers still conduct an investigation concerned with the factors enhancing calcium absorption and not having any negative influence on excretion of this element. The following can be rated among such substances: vitamin D, magnesium, inulin and other indigestible oligosaccharides, some amino acids, short-chain fatty acids, lactose, casein, phosvitin.Nieodpowiednia podaż wapnia wpływa na utratę masy kostnej oraz ryzyko wystąpienia osteoporozy. Zdrowotne korzyści oczekiwane od wapnia zależą nie tylko od ilości spożywanego wapnia, ale również są bardzo silnie zależne od możliwości organizmu do wchłaniania przyjętego wapnia. Wiele badań poświęconych temu tematowi nie rozważa ilości wapnia rzeczywiście wchłanianego, która nigdy nie wynosi 100%, a waha się w granicach 10-75% w zależności od wieku i stanu zdrowia. Aby wchłanianie wapnia było jak najefektywniejsze poszukuje się substancji zwiększających absorpcję wapnia w przewodzie pokarmowym, a ponadto nie wpływających negatywnie na jego wydalanie. Do takich substancji można obecnie zaliczyć: witaminę D, magnez, inulinę i inne niestrawne sacharydy, niektóre aminokwasy, krótkołańcuchowe kwasy tłuszczowe, laktozę, fosfopeptydy kazeiny i foswityny

Structural and functional polymorphism of plastids in leaves of Clivia miniata Rgl. I. Ontogenesis of plastids in epidermis and guard cells

During leaf ontogenesis in Clivia miniata epidermal and guard cell plastids differing in structure and function differentiate from morphologically equal proplastids. Plastid differentiation proceeds in parallel to cellular differentiation and stops in cells reaching maturity. It is suggested that the developmental sequence of plastids is fixed within cells and controlled by the inner mechanisms