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Jan Marcin Węsławski Lucyna Kryla-Straszewska Jan Warzocha Jacek Urbański Maria Włodarska-Kowalczuk Lech Kotwicki 《Oceanological and hydrobiological studies.》2013,42(3):289-295
Extensive sampling (450 grabs) was performed all over the inner part of Puck Bay (105 km2 area) in summers of 2007–2009. The GIS-based analysis of samples was performed to assess in detail the distribution of 32 benthic species. The minimum area of occurrence was less than 1 km2 for Lekanosphaera rugicauda and the maximum was 83 km2 for Cerastoderma glaucum. The material reveals that species with the pelagic larval stage were most widespread, with the least distance between individuals and the highest average density (e.g. Cerastoderma glaucum, Hydrobia ventrosa). The most isolated and the least dense species within the studied area were discretely mobile, non-larval crustaceans (e.g. Gammarus oceanicus and Lekanosphaera rugicauda), present at single sites with the largest distance from each other. We conclude that analysis of species distribution helps in understanding the threats to populations of marine invertebrates and marine spatial planning, through locating the isolated species and populations. 相似文献
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Although the development of the avian skeleton has attracted considerable attention, most of the studies have been concentrated on the embryonic period, while studies on the postnatal period are rare. We studied the postnatal development of the skeleton in two phylogenetically distant birds, an altricial passerine Acrocephalus scirpaceus and a semiprecocial charadriiform Chroicocephalus ridibundus. The neonates of the former, despite being altricial, have well-ossified skeleton—the degree of development approaches that of the semiprecocial gull. However, after hatching the limb bones (particularly those of the hind limb) ossify earlier in the gull which is probably related to faster acquisition of locomotor abilities. We have observed that, in contrast to previous reports from neognathous birds, in the ankle of the gull, the ascending process fuses with the astragalus rather than with the calcaneum. This type of development is present in palaeognaths and nonavian dinosaurs but has not yet been reported in neognaths. This indicates a greater diversity within Neognathae and suggests a more complex scenario for the evolution of the avian ankle. However, data from a greater number of species are needed to establish the developmental sequence ancestral for neognathous birds. Furthermore, the sequence of bone fusions in the wrist of Acrocephalus is similar to the fossil-documented evolutionary sequence observed in the phylogeny of early birds, with the semilunate carpal and major metacarpal fusing first, followed by the alular metacarpal fusing with the major metacarpal and then the major and minor metacarpal fusing proximally. These data underscore the importance of developmental studies for reconstructing the evolutionary history. 相似文献
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Agnieszka Szypowska Lidia Groele Marta Wysocka-Mincewicz Artur Mazur Lucyna Lisowicz Iwona Ben-Skowronek Joanna Sieniawska Bożenna Klonowska Dorota Charemska Jolanta Nawrotek Irena Jałowiec Artur Bossowski Klaudyna Noiszewska Beata Pyrżak Izabela Rogozińska Mieczysław Szalecki 《Journal of diabetes and its complications》2018,32(6):570-574
Aims
The level of C-peptide can identify individuals most likely to respond to immune interventions carried out to prevent pancreatic β-cell damage.The aim of the study was to evaluate factors associated with C-peptide levels at type 1 diabetes (T1D) diagnosis.Methods
This study included 1098 children aged 2-17 with newly recognized T1D. Data were collected from seven Polish hospitals. The following variables were analyzed: date of birth, fasting C-peptide, HbA1c, sex, weight, height, pH at diabetes onset.Results
A correlation was observed between fasting C-peptide level and BMI-SDS (p?=?0.0001), age (p?=?0.0001), and HbA1c (p?=?0.0001). The logistic regression model revealed that fasting C-peptide ≥0.7 ng/ml at diabetes diagnosis was dependent on weight, HbA1c, pH and sex (p?<?0.0001).Overweight and obese children (n?=?124) had higher fasting C-peptide (p?=?0.0001) and lower HbA1c (p?=?0.0008) levels than other subjects. Girls had higher fasting C-peptide (p?=?0.036) and higher HbA1c (p?=?0.026) levels than boys.Conclusion
Obese and overweight children are diagnosed with diabetes at an early stage with largely preserved C-peptide levels. Increased awareness of T1D symptoms as well as improved screening and diagnostic tools are important to preserve C-peptide levels. There are noticeable gender differences in the course of diabetes already at T1D diagnosis. 相似文献8.
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The elevated gene expression level of the A2B adenosine receptor is associated with hyperglycemia in women with gestational diabetes mellitus 下载免费PDF全文
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Marta Andres-Mach Anna Zadrożniak Agnieszka Haratym-Maj Magdalena Florek-Luszczki Grzegorz Raszewski Lucyna Antkiewicz-Michaluk Jarogniew J. Luszczki 《Journal of neural transmission (Vienna, Austria : 1996)》2013,120(12):1651-1663
The aim of this study was to characterize the interaction between 1-methyl-1,2,3,4-tetrahydroisoquinoline (1-MeTHIQ—an endogenous parkinsonism-preventing substance) and various antiepileptic drugs [AEDs: clonazepam (CZP), ethosuximide (ETS), gabapentin (GBP), levetiracetam (LEV), tiagabine (TGB) and vigabatrin (VGB)] in the mouse maximal electroshock (MES)-induced seizure model. Results indicate that 1-MeTHIQ in combination with CZP (at the fixed ratios of 50:1 and 25:1), ETS (1:10) and GBP (1:1, 1:2, 1:5 and 1:10) exerted supra-additive (synergistic) interactions in the mouse MES model. In contrast, 1-MeTHIQ in combination with CZP (200:1 and 100:1), ETS (1:1, 1:2 and 1:5), LEV and VGB (1:1, 1:2, 1:5 and 1:10), and TGB (200:1, 100:1, 50:1 and 25:1) produced additive interaction in the mouse MES model. Total brain AED concentrations were unaffected by 1-MeTHIQ, and inversely, CZP, ETS and GBP had no impact on total brain concentrations of 1-MeTHIQ, indicating pharmacodynamic nature of synergistic interactions between 1-MeTHIQ and the tested AEDs in the mouse MES model. In conclusion, the supra-additive interactions of 1-MeTHIQ with CZP (at the fixed ratios of 50:1 and 25:1), ETS (1:10) and GBP (1:1, 1:2, 1:5 and 1:10) in the mouse MES model appear to be particularly favorable combinations from a clinical viewpoint. The additive combinations of 1-MeTHIQ with CZP (100:1, 50:1), ETS (1:1, 1:2 and 1:5), LEV and VGB (1:1, 1:2, 1:5, and 1:10), and TGB (200:1, 100:1, 50:1 and 25:1) seem to be neutral and worthy of consideration in further clinical practice. 相似文献