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91.
Mucha Joanna Zadworny Marcin Helmisaari Heljä-Sisko Nihlgård Bengt Repo Tapani Żytkowiak Maciej Małek Stanisław Reich Peter B. Oleksyn Jacek 《Plant and Soil》2020,455(1-2):507-518
Plant and Soil - Any grouping of tree species concerned with SOC sequestration should include trees that are as homogeneous as possible in their carbon sequestration. We propose a classification of... 相似文献
92.
93.
Michał Zatoń Tomasz Wrzołek Jan Ove R. Ebbestad 《Lethaia: An International Journal of Palaeontology and Stratigraphy》2020,53(4):486-499
Analysis of mushroom-shaped rugose corals Schlotheimophyllum patellatum (Schlotheim, 1820) from the Silurian (Upper Visby Beds, Lower Wenlock, Sheinwoodian) of Gotland, Sweden, showed that they were colonized on both the upper (exposed) and lower (cryptic) sides by a variety of encrusting and boring (sclerobiont) biotas, represented by 10 taxa and at least 23 species. Bryozoans and microconchid tubeworms, the most abundant encrusters, dominated on the cryptic undersides of the corals, while the dominant endobionts responsible for Trypanites borings overwhelmingly dominated the exposed surfaces. Except for cnidarian sphenothallids, which were exclusive colonizers of the underside of only one coral host, no other encrusters could be referred to as obligate cryptobionts. Because the upper surface of these corals was likely covered by soft-tissues during life, in specimens lifted off the sea-floor sclerobionts must have settled on the cryptic sides first. They could colonize the upper side only after the coral’s death, unless it was covered by sediment as could be the case in some flat specimens. With time, the space on the underside of the coral skeleton may have progressively been filled by sediment as well, precluding further colonization by sclerobionts. In that respect, the colonization patterns of these corals by encrusters and borers were controlled by the complex interplay of environmental factors, sclerobiont dynamics and coral growth in a given Silurian habitat. Compared with Silurian stromatoporoid hosts, the sclerobiont diversity and abundance noted on the Schlotheimophyllum corals may be regarded as representative for the Silurian as a whole. 相似文献
94.
Muszyńska Bożena Kała Katarzyna Włodarczyk Anna Krakowska Agata Ostachowicz Beata Gdula-Argasińska Joanna Suchocki Piotr 《Biological trace element research》2020,194(2):614-615
Biological Trace Element Research - The original version of this article unfortunately contained a mistake. 相似文献
95.
Mansouri Borhan Błaszczyk Martyna Binkowski Lukasz J. Sayadi Mohammad Hossein Azadi Nammam Ali Amirabadizadeh Ali Reza Mehrpour Omid 《Biological trace element research》2020,195(1):63-70
Biological Trace Element Research - In low-income and middle-income countries such as Iran, smoking is becoming increasingly popular, especially among young people. This has led to additional... 相似文献
96.
Aleksandra Łukasiewicz Małgorzata Niśkiewicz Jacek Radwan 《Evolution; international journal of organic evolution》2020,74(8):1851-1855
Elaborate sexually selected ornaments and armaments are costly but increase the reproductive success of their bearers (usually males). It has been postulated that high-quality males can invest disproportionately more in such traits, making those traits honest signals of genetic quality. However, genes associated with such traits may have sexually antagonistic effects on fitness. Here, using a bulb mite Rhizoglyphus robini, a species in which a distinct dimorphism exists between males in the expression of a sexually selected weapon, we compare inbreeding and gender load between lines derived from armed fighters and unarmed scramblers. After four generations of sib-mating, inbreeding depression for female fitness was significantly lower in fighter-derived lines compared to scrambler-derived lines, suggesting that fighter males had significantly higher genetic quality. However, outbred females from fighter-derived lines had significantly lower fitness compared to outbred females from scrambler-derived lines, demonstrating significant gender load associated with the presence of a sexually selected male weapon. Our results imply that under outbreeding, genetic benefits of mating with bearers of elaborate sexually selected traits might be swamped by the costs of decreased fitness of female progeny due to sexually antagonistic effects. 相似文献
97.
Malgorzata Stec Jarosław Baran Rafał Szatanek Bożenna Mytar Marzena Lenart Antoni Czupryna Antoni Szczepanik Maciej Siedlar Marek Zembala 《Cancer immunology, immunotherapy : CII》2013,62(4):705-713
Monocytes exhibit direct and indirect antitumour activities and may be potentially useful for various forms of adoptive cellular immunotherapy of cancer. However, blood is a limited source of them. This study explored whether monocytes can be obtained from bone marrow haematopoietic CD34+ stem cells of colon cancer patients, using previously described protocol of expansion and differentiation to monocytes of cord blood-derived CD34+ haematopoietic progenitors. Data show that in two-step cultures, the yield of cells was increased approximately 200-fold, and among these cells, up to 60 % of CD14+ monocytes were found. They consisted of two subpopulations: CD14++CD16+ and CD14+CD16?, at approximately 1:1 ratio, that differed in HLA-DR expression, being higher on the former. No differences in expression of costimulatory molecules were observed, as CD80 was not detected, while CD86 expression was comparable. These CD14+ monocytes showed the ability to present recall antigens (PPD, Candida albicans) and neoantigens expressed on tumour cells and tumour-derived microvesicles (TMV) to autologous CD3+ T cells isolated from the peripheral blood. Monocytes also efficiently presented the immunodominant HER-2/neu369–377 peptide (KIFGSLAFL), resulting in the generation of specific cytotoxic CD8+ T lymphocytes (CTL). The CD14++CD16+ subset exhibited enhanced cytotoxicity, though nonsignificant, towards tumour cells in vitro. These observations indicate that generation of monocytes from CD34+ stem cells of cancer patients is feasible. To our knowledge, it is the first demonstration of such approach that may open a way to obtain autologous monocytes for alternative forms of adaptive and adoptive cellular immunotherapy of cancer. 相似文献
98.
We tested the hypothesis that homocysteine levels are higher in blood of schizophrenic subjects on clozapine monotherapy than in healthy controls and they correlate with anthropometric measurements, laboratory tests and results of bioimpedance analysis of body composition. Data for 24 subjects with schizophrenia treated with clozapine and 24 age- and sex-matched healthy volunteers was analyzed. Regarding the whole group, homocysteine levels were significantly higher in men (17.0 ± 3.4 vs. 12.1 ± 4.0 μmol/L, p = 0.009). Homocysteine levels correlated with waist circumference (R = 0.58, p = 0.003), waist-to-hip ratio (R = 0.57, p = 0.003), basal metabolic rate (R = 0.48, p = 0.01), lean body mass [kg] (R = 0.53, p = 0.008), body water [L] (R = 0.53, p = 0.008) and triglycerides (R = 0.57, p = 0.003). There were no significant differences of homocysteine levels for impaired fasting glucose, abdominal obesity, obesity/overweight, and dyslipidemia. Homocysteine levels did not correlate with age, treatment duration, clozapine dose, weight, body mass index, abdominal circumference, blood pressure, total body fat, cholesterol, high density lipoproteins, low density lipoproteins, uric acid, calcium, glucose, insulin, homoeostasis model assessment of insulin resistance 1, and homoeostasis model assessment of insulin resistance 2. We did not find significant differences in blood homocysteine levels between subjects with schizophrenia and controls. Association with waist circumference may support homocysteine role as an important cardiovascular risk factor. Association with lean weight may explain why men have higher levels of homocysteine than women. 相似文献
99.
Attachment of Brachyspira hyodysenteriae to intestinal epithelial cell lines and its possible mediation by outer membrane proteins (OMPs) of the spirochete were examined. Different B. hyodysenteriae serotypes were shown to adhere to rat and swine intestinal epithelial cells (IEC-18 and IPEC-J2) in vitro but not to the human rectal tumor cell line (HRT-18). Adherence of strain B204 to IPEC-J2 cells was reduced by rOMP-specific antisera in amounts of 29 % (anti-rBhlp29.7), 59 % (anti-rBhlp16), 70 % (anti-rBhmp39h), and 74 % (anti-rBhmp39h), respectively. By use of pooled antisera against Bhlp16 and Bhmp39f inhibition rates of the other serotypes ranged from 53 to 91 %. In a western blot assay OMPs of all serotypes but one were detected by the respective rOMP antisera. Altogether the results indicated that OMPs of B. hyodysenteriae displayed a serotype overlapping antigenicity and mediated adherence of the spirochetes to animal cell cultures. 相似文献
100.
Ewelina Węglarz-Tomczak Marcin Poręba Anna Byzia Łukasz Berlicki Bogusław Nocek Rory Mulligan Andrzej Joachimiak Marcin Drąg Artur Mucha 《Biochimie》2013
Neisseria meningitides is a gram-negative diplococcus bacterium and is the main causative agent of meningitis and other meningococcal diseases. Alanine aminopeptidase from N. meningitides (NmAPN) belongs to the family of metallo-exopeptidase enzymes, which catalyze the removal of amino acids from the N-terminus of peptides and proteins, and are found among all the kingdoms of life. NmAPN is suggested to be mostly responsible for proteolysis and nutrition delivery, similar to the orthologs from other bacteria. 相似文献