Search results for "trace"
showing 10 items of 3218 documents
Kombinētās orālās kontracepcijas medikamentozās terapijas aprite aptiekā "Mēness aptieka - 80"
2018
Kombinētie orālie kontraceptīvie līdzekļi ir hormonāli izveidota medikamentozā terapija, kas satur sintētiskos sieviešu hormonu analogus. Mūsdienās kombinētie kontraceptīvi ir vieni no visplašāk izrakstītajiem un izmantotajiem galveniem pretapaugļošanas preparātiem, kuri nomāc reproduktīvajā sistēmā ovulāciju, tādējādi ietekmējot apaugļošanās funkcijas, kas tiek raksturota, kā pozitīva KOK ietekme. Šī darba mērķis bija noskaidrot, kādas ir iespējamās visplašāk nozīmētās KOK medikamentozās terapijas, vadoties pēc aptaujāto respondentu vecuma, diagnozi, kā arī noteikt pacientu informētību par pareizu un adekvātu KOK medikamentozās terapijas lietošanu. Tika iegūti rezultāti, ka kombinēto orālo…
Lifestyle influence on trace element contents in human scalp hair of young residents in different urban contexts. Preliminary results.
2010
A causal relationship between earth material and human health, although not always proven, is highly plausible because many chemical elements in rocks and soils are directly inhaled by respiration or transmitted, via air, water and vegetation, into food chain and then to human body. It is well known that metals and metalloids may result essential to biochemical and physiological functions, but it is also well known that health problems may derive from either dietary deficiencies or excesses. Among the techniques employed to assess the exposure of living organisms to metals and metalloids present in the environment, the human biomonitoring has attracted the attention of investigators over th…
Vesiclepedia:A Compendium for Extracellular Vesicles with Continuous Community Annotation
2012
Vesiclepedia is a community-annotated compendium of molecular data on extracellular vesicles.
Bidirectional cell-matrix interaction dictates neuronal network formation in a brain-mimetic 3D scaffold
2022
Human pluripotent stem cells (hPSC) derived neurons are emerging as a powerful tool for studying neurobiology, disease pathology, and modeling. Due to the lack of platforms available for housing and growing hPSC-derived neurons, a pressing need exists to tailor a brain-mimetic 3D scaffold that recapitulates tissue composition and favourably regulates neuronal network formation. Despite the progress in engineering biomimetic scaffolds, an ideal brain-mimetic scaffold is still elusive. We bioengineered a physiologically relevant 3D scaffold by integrating brain-like extracellular matrix (ECM) components and chemical cues. Culturing hPSCs-neurons in hyaluronic acid (HA) gels and HA-chondroitin…
C1q–Ha matrix regulates the local synthesis of hyaluronan in malignant pleural mesothelioma by modulating has3 expression
2021
Increased hyaluronic acid (HA) production is often associated with cancer progression. In malignant pleural mesothelioma (MPM), HA is found at elevated levels in pleural effusions and sera of patients, and it has been widely debated whether MPM cells are able to produce HA by themselves or through the release of growth factors stimulating other cells. Another key component of the MPM microenvironment is C1q, which can act as a pro-tumorigenic factor favoring cell adhesion, migration and proliferation. The aim of the current study was to prove that MPM primary cells are able to synthesize HA and to inquire the stimulus given by C1q&ndash
Chemical-physical parameters, major, minor and trace elements composition of thermo-mineral groundwaters of Greece
2022
This dataset comprises samples of thermo-mineral waters collected by the same team over the period from October 2004 to March 2020 and analysed in the same laboratory. Samples were collected on the whole territory of Greece.
Molecular Pathways Implicated in Radioresistance of Glioblastoma Multiforme: What Is the Role of Extracellular Vesicles?
2023
Glioblastoma multiforme (GBM) is a primary brain tumor that is very aggressive, resistant to treatment, and characterized by a high degree of anaplasia and proliferation. Routine treatment includes ablative surgery, chemotherapy, and radiotherapy. However, GMB rapidly relapses and develops radioresistance. Here, we briefly review the mechanisms underpinning radioresistance and discuss research to stop it and install anti-tumor defenses. Factors that participate in radioresistance are varied and include stem cells, tumor heterogeneity, tumor microenvironment, hypoxia, metabolic reprogramming, the chaperone system, non-coding RNAs, DNA repair, and extracellular vesicles (EVs). We direct our a…
Singēna ortotopiska prostatas audzēja modeļa izveide imūnkompetentās pelēs vēža šūnu producēto ekstracelulāro vezikulu pato-fizioloģiskās lomas pētīj…
2018
Prostatas vēzis vēl joprojām ir nozīmīga veselības problēma visā pasaulē un ir parādīts ka ekstracelulārās vezikulas (EV) ir nozīmīgs faktors ļaundabīga audzēja attīstībā. Šī darba gaitā tika izveidots singēns ortotopisks prostatas audzēja modelis C57BL/6 tipa pelēs vēža šūnu producēto EV patofizioloģiskās lomas pētījumiem in vivo. Iegūtie dati liecina par mikrometastāžu veidošanos aknās un ar kuņģi asociētajās audu struktūrās pelēs ar ortotopisku audzēju, kurā veiktas intratumorālas metastātisko TRAMP-C2 šūnu hipoksijā producēto EV injekcijas, bet ne citu grupu dzīvniekiem, kas norāda uz modeļa potenciālu tālākiem EV pētījumiem. Tomēr nepieciešams ieviest izmaiņas, kas dotu iespēju turpmāk…
Air Quality Assessment by the Determination of Trace Elements in Lichens (Xanthoria calcicola) in an Industrial Area (Sicily, Italy)
2022
This study provides data on variation in the content of metals and metalloids measured in the lichens (Xanthoria calcicola Oxner) collected in the Syracusan petrochemical complex (Sicily, Italy) which is considered one of the largest in Europe. Concentrations of eighteen trace elements measured in the lichens that were collected from 49 different points were analyzed using an inductively coupled plasma (ICP-MS) device. The concentrations of the typical elements of industrial emissions (As, Cr, Ni, and V) highlight the environmental criticality that exists in the study area. The interpretation of the data in terms of multi-element statistical analysis (FA) and enrichment factor (EFs) proved …
Correlations of blood selenium with hematological parameters in West German adults.
1988
The serum selenium and the whole blood selenium of 72 healthy persons (47 women, 25 men) was determined. There exist sex specific differences of the whole blood selenium between men (98 +/- 19 micrograms Se/L) and women (89 +/- 17 micrograms Se/L). The serum selenium did not show sex specific differences, but sex specific differences are found if the total amount of extracellular selenium is calculated by correction of the serum selenium with the hematocrit. Women have more extra-cellular selenium/L whole blood (40 +/- 8 micrograms Se) than men (36 +/- 7 micrograms Se). Men have more intraerythrocyte selenium (cellular selenium = 67 +/- 14 micrograms Se) in one L whole blood than women (52 …