Spinal claudication - rare complication of vena cava inferior thrombosis

Przedstawiono opis 27-letniego mężczyzny z ostrym zakrzepem żyły próżnej dolnej z wyraźnymi skargami neurologicznymi przy minimalnej niewydolności żył głębokich.A 27-year-old man with acute vena cava inferior thrombosis was presented with prominent neurological complaints alongside minimal deep vein insufficiency

Koagulopatia ze zużycia jako wiodący objaw zatoru płynem owodniowym -opis przypadku.

Amniotic fluid embolism is a rare and diagnostically challenging obstetric disease of high mortality rate. We present a case of a 33-year old parturient after vaginal birth, who presented with severe hemorrhagic shock with low platelet count and coagulopathy resistant to treatment with plasma, platelets and coagulation factors and despite of surgical management of bleeding. Laboratory findings revealed consumptive coagulopathy. Other symptoms included dyspnea and atelectatic changes on chest x-ray, together with augmentation of the heart with no proof of ventricular insufficiency in echocardiographic examination. The suspected reason of these alterations was amniotic fluid embolism. The patient survived and came back to her usual activity after 22 days of treatment.Zator płynem owodniowym jest rzadkim i ciężkim powikłaniem położniczym trudnym diagnostycznie i obarczonym wysoką śmiertelnością. Prezentujemy przypadek 33-letniej pacjentki po porodzie drogami natury w 36. tygodniu ciąży, u której w kilku godzinach po porodzie zaobserwowano objawy wstrząsu krwotocznego z małopłytkowością i zaburzeniami krzepnięcia utrzymującymi się mimo chirurgicznego zaopatrzenia krwotoku oraz uzupełniania płytek krwi i czynników krzepnięcia. Badania laboratoryjne potwierdziły koagulopatię ze zużycia. Pozostałymi objawami była duszność i rozlane zmiany niedodmowe w rtg klatki piersiowej oraz powiększona sylwetka serca, jednak bez cech przeciążenia komór serca w badaniu echokardiograficznym. Przedstawiony obraz choroby może odpowiadać zatorowi płynem owodniowym. Pacjentka wróciła do zwykłej aktywności po 22 dobach leczenia

Highly Efficient and Reusable Alkyne Hydrosilylation Catalysts Based on Rhodium Complexes Ligated by Imidazolium-Substituted Phosphine

Rhodium complexes ligated by imidazolium-substituted phosphine were used as catalysts in the hydrosilylation of alkynes (1-heptyne, 1-octyne, and phenylacetylene) with 1,1,1,3,5,5,5-heptamethyltrisiloxane (HMTS) or triethylsilane (TES). In all cases, the above complexes showed higher activity and selectivity compared to their precursors ([Rh(PPh3)3Cl] and [{Rh(µ-Cl)(cod)}2]). In the reactions with aliphatic alkynes (both when HMTS and TES were used as hydrosilylating agents), β(Z) isomer was mainly formed, but, in the reaction of phenylacetylene with TES, the β(E) product was formed. The catalysts are very durable, stable in air and first and foremost insoluble in the reactants which facilitated their isolation and permitted their multiple use in subsequent catalytic runs. They make a very good alternative to the commonly used homogeneous catalysts

Rhodium and platinum complexes with anionic liquids as effective catalyst for hydrosilylation reaction

Wydział ChemiiZasadniczym celem zrealizowanej pracy doktorskiej, były badania procesów hydrosililowania ze szczególnym uwzględnieniem aktywności katalitycznej nowych kompleksów rodu i platyny w skład których wchodziły ciecze jonowe. Badania wykonywane w ramach niniejszej rozprawy obejmowały: optymalizację warunków prowadzenia reakcji hydrosililowania katalizowanych nowymi katalizatorami rodowymi i platynowymi, wyznaczenie różnic w aktywności poszczególnych kompleksów rodu i platyny, reakcje hydrosililowania ketonów i acetylenów katalizowane badanymi kompleksami rodu i platyny, syntezę nośników tlenkowych oraz nośników tlenkowych z ligniną oraz wytworzenie z ich udziałem układów SILP (Supported Ionic Liquid Phase) z rodem i platyną, ich pełną charakterystykę fizykochemiczną i adsorpcyjną oraz badania nad ich aktywnością katalityczną w reakcji hydrosililowania olefin. Rozprawa doktorska obejmuje cykl dziewięciu publikacji naukowych (w tym dwóch o charakterze przeglądowym) charakteryzujących aktywność katalityczną nowych materiałów katalitycznych. Uzyskane wyniki pozwoliły na potwierdzenie trwałości oraz skuteczności badanych kompleksów rodu i platyny oraz materiałów Rh-SILP i Pt-SILP w reakcji hydrosililowania, a także możliwość ich izolacji i ponownego wykorzystania w kolejnych cyklach katalitycznych.The main goal of the doctoral thesis entitled: was a comprehensive studies on evaluation of catalytic activity of rhodium and platinum complexes containing ionic liquids in hydrosilylation reactions. The studies completed within the presented dissertation included: optimization of the conditions of hydrosilylation reaction catalyzed by rhodium and platinum complexes, determination of differences in the catalytic activity of individual rhodium and platinum complexes, hydrosilylation reactions of ketones and acetylenes catalyzed by the investigated rhodium and platinum complexes, synthesis of oxide systems and oxide systems supports with lignin and preparation with their use SILP (Supported Ionic Liquid Phase) systems with rhodium and platinum, their physicochemical and adsorption characterization, and assessment of their catalytic activity in the olefin hydrosilylation reaction. The doctoral dissertation is based on a series of nine scientific publications (including two reviews), characterizing the catalytic activity of new catalytic materials. The obtained results confirmed the durability and catalytic efficiency of investigated rhodium and platinum complexes and obtained Rh-SILP and Pt-SILP systems in the hydrosilylation reaction, as well as their easy isolation from the reaction system and its effective reuse in subsequent catalytic cycles

Microbial OTUs in L. vulgaris nectar

This dataset details the operational taxonimic units (OTUs) found in individual plants or populations of Linaria vulgaris across an urbanization gradient. Moreover, it also contains NMDS coordinates for every population

New SILP materials based on TiO2-SiO2 and TiO2-SiO2/lignin supports as effective catalysts for hydrosilylation reaction.

This dataset contains results of conducted physicochemical analysis and catalytic tests on new Supported Ionic Liquid Phase materials with rhodium and platinum based on TiO2-SiO2 and TiO2-SiO2/lignin supports. The aim of this research was to obtain new SILP materials with rhodium and platinum, based on the oxide systems TiO2-SiO2 and TiO2-SiO2/lignin supports. As part of this research, the synthesis of oxide systems was carried out and obtained supports were applied in new SILP materials. Catalytic activity of the obtained SILP materials was tested in the hydrosilylation of 1-octene with 1,1,1,3,5,5,5-heptamethyltrisiloxane. The supports and catalytic materials were subjected to thorough characterization by elemental analysis, XRD, SEM-EDX, IR, and TGA, and their particle size distribution and porous properties were assessed. The conducted research proved the possibility of easy isolation and re-use in subsequent catalytic cycles of new SILP materials with rhodium and platinum. It is worth noting that the oxide systems TiO2-SiO2 and TiO2-SiO2 /lignin have not been used in this type of catalytic materials so far.Samples description was included in the README file.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Supported Ionic Liquid Pahase materials based on MgO-SiO2 and MgO-SiO2/lignin supports.

This dataset contains results of conducted physicochemical analysis and catalytic tests on new Supported Ionic Liquid Phase materials with rhodium and platinum based on TiO2-SiO2 and TiO2-SiO2/lignin supports. The aim of this research was to obtain new SILP materials with rhodium and platinum, based on the oxide systems MgO-SiO2 and MgO-SiO2/lignin supports. As part of this research, the synthesis of oxide systems was carried out and obtained supports were applied in new SILP materials. Catalytic activity of the obtained SILP materials was tested in the hydrosilylation of 1-octene with 1,1,1,3,5,5,5-heptamethyltrisiloxane. The supports and catalytic materials were subjected to thorough characterization by elemental analysis, XRD, SEM-EDX, IR, and TGA, and their particle size distribution and porous properties were assessed. The conducted research proved the possibility of easy isolation and re-use in subsequent catalytic cycles of new SILP materials with rhodium and platinum. It is worth noting that the oxide systems MgO-SiO2 and MgO-SiO2 / lignin have not been used in this type of catalytic materials so far.Samples description was included in the README file.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Population genetic diversity of the clonal self-incompatible herbaceous plant species Linaria vulgaris along an urbanization gradient

How increasing urbanization affects biodiversity is one of the most understudied aspects of global change biology. It is, however, known that it may negatively affect plant population genetic diversity in numerous ways, for example through its negative effects on plant population size, between‐population connectivity, and reproductive success. Therefore, it is important to investigate to what extent different levels of urbanization result in these negative phenomena. Here we used microsatellite markers to investigate urbanization effects on the population genetic structure of 23 populations of the self‐incompatible, partially clonal herb Linaria vulgaris which were sampled across a gradient of urbanization. Clonal diversity as measured by the Pareto‐parameter varied between 1.11 and 2.97 and was negatively correlated to both the degree of urbanization and to population size. Urbanization and population size were not interrelated. The least clonally rich populations also experienced significantly reduced seed set. Irrespective of the degree of urbanization, L. vulgaris populations exhibited strong genetic differentiation (FST = 0.33) and there was no significant correlation between genetic and geographic distances, suggesting low gene flow among populations. In conclusion, we showed that urbanization negatively affected fitness of L. vulgaris populations through decreasing their clonal diversity and reproductive success, an effect that may be exacerbated by the low gene flow between populations. Although the effect was modest, the results could probably be extrapolated to bigger cities where it would be considerably more pronounced.status: publishe

Microbial diversity in the floral nectar of Linaria vulgaris along an urbanization gradient

BACKGROUND: Microbes are common inhabitants of floral nectar and are capable of influencing plant-pollinator interactions. All studies so far investigated microbial communities in floral nectar in plant populations that were located in natural environments, but nothing is known about these communities in nectar of plants inhabiting urban environments. However, at least some microbes are vectored into floral nectar by pollinators, and because urbanization can have a profound impact on pollinator communities and plant-pollinator interactions, it can be expected that it affects nectar microbes as well. To test this hypothesis, we related microbial diversity in floral nectar to the degree of urbanization in the late-flowering plant Linaria vulgaris. Floral nectar was collected from twenty populations along an urbanization gradient and culturable bacteria and yeasts were isolated and identified by partially sequencing the genes coding for small and large ribosome subunits, respectively. RESULTS: A total of seven yeast and 13 bacterial operational taxonomic units (OTUs) were found at 3 and 1% sequence dissimilarity cut-offs, respectively. In agreement with previous studies, Metschnikowia reukaufii and M. gruessi were the main yeast constituents of nectar yeast communities, whereas Acinetobacter nectaris and Rosenbergiella epipactidis were the most frequently found bacterial species. Microbial incidence was high and did not change along the investigated urbanization gradient. However, microbial communities showed a nested subset structure, indicating that species-poor communities were a subset of species-rich communities. CONCLUSIONS: The level of urbanization was putatively identified as an important driver of nestedness, suggesting that environmental changes related to urbanization may impact microbial communities in floral nectar of plants growing in urban environments.status: publishe

Data from: Microbial diversity in the floral nectar of Linaria vulgaris along an urbanization gradient

Background: Microbes are common inhabitants of floral nectar and are capable of influencing plant-pollinator interactions. All studies so far investigated microbial communities in floral nectar in plant populations that were located in natural environments, but nothing is known about these communities in nectar of plants inhabiting urban environments. However, at least some microbes are vectored into floral nectar by pollinators, and because urbanization can have a profound impact on pollinator communities and plant-pollinator interactions, it can be expected that it affects nectar microbes as well. To test this hypothesis, we related microbial diversity in floral nectar to the degree of urbanization in the late-flowering plant Linaria vulgaris. Floral nectar was collected from twenty populations along an urbanization gradient and culturable bacteria and yeasts were isolated and identified by partially sequencing the genes coding for small and large ribosome subunits, respectively. Results: A total of seven yeast and 13 bacterial operational taxonomic units (OTUs) were found at 3 and 1 % sequence dissimilarity cut-offs, respectively. In agreement with previous studies, Metschnikowia reukaufii and M. gruessi were the main yeast constituents of nectar yeast communities, whereas Acinetobacter nectaris and Rosenbergiella epipactidis were the most frequently found bacterial species. Microbial incidence was high and did not change along the investigated urbanization gradient. However, microbial communities showed a nested subset structure, indicating that species-poor communities were a subset of species-rich communities. Conclusions: The level of urbanization was putatively identified as an important driver of nestedness, suggesting that environmental changes related to urbanization may impact microbial communities in floral nectar of plants growing in urban environments