The extent and relevance of altered bone metabolism for statural growth in children with chronic kidney disease is controversial. We analyzed the impact of renal dysfunction and recombinant growth ...hormone therapy on a panel of serum markers of bone metabolism in a large pediatric chronic kidney disease cohort.
Bone alkaline phosphatase (BAP), tartrate-resistant acid phosphatase 5b (TRAP5b), sclerostin and C-terminal FGF-23 (cFGF23) normalized for age and sex were analyzed in 556 children aged 6-18 years with an estimated glomerular filtration rate (eGFR) of 10-60 ml/min/1.73 m2. 41 children receiving recombinant growth hormone therapy were compared to an untreated matched control group.
Standardized levels of BAP, TRAP5b and cFGF-23 were increased whereas sclerostin was reduced. BAP was correlated positively and cFGF-23 inversely with eGFR. Intact serum parathormone was an independent positive predictor of BAP and TRAP5b and negatively associated with sclerostin. BAP and TRAP5B were negatively affected by increased C-reactive protein levels. In children receiving recombinant growth hormone, BAP was higher and TRAP5b lower than in untreated controls. Sclerostin levels were in the normal range and higher than in untreated controls. Serum sclerostin and cFGF-23 independently predicted height standard deviation score, and BAP and TRAP5b the prospective change in height standard deviation score.
Markers of bone metabolism indicate a high-bone turnover state in children with chronic kidney disease. Growth hormone induces an osteoanabolic pattern and normalizes osteocyte activity. The osteocyte markers cFGF23 and sclerostin are associated with standardized height, and the markers of bone turnover predict height velocity.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
•Integrating in-field water quality analysis with automated ship tracking•Comparing pollution source potentials by pollution source profiling•Multifaceted understanding of faecal impact at the ...analysed river reach•Supporting target-oriented and evidence-based water quality management•World-wide applicable to any water body with ship tracking data
The contribution of ships to the microbial faecal pollution status of water bodies is largely unknown but frequently of human health concern. No methodology for a comprehensive and target-oriented system analysis was available so far. We developed a novel approach for integrated and multistage impact evaluation. The approach includes, i) theoretical faecal pollution source profiling (PSP, i.e., size and pollution capacity estimation from municipal vs. ship sewage disposal) for impact scenario estimation and hypothesis generation, ii) high-resolution field assessment of faecal pollution levels and chemo-physical water quality at the selected river reaches, using standardized faecal indicators (cultivation-based) and genetic microbial source tracking markers (qPCR-based), and iii) integrated statistical analyses of the observed faecal pollution and the number of ships assessed by satellite-based automated ship tracking (i.e., automated identification system, AIS) at local and regional scales. The new approach was realised at a 230 km long Danube River reach in Austria, enabling detailed understanding of the complex pollution characteristics (i.e., longitudinal/cross-sectional river and upstream/downstream docking area analysis). Faecal impact of navigation was demonstrated to be remarkably low at regional and local scale (despite a high local contamination capacity), indicating predominantly correct disposal practices during the investigated period. Nonetheless, faecal emissions were sensitively traceable, attributable to the ship category (discriminated types: cruise, passenger and freight ships) and individual vessels (docking time analysis) at one docking area by the link with AIS data. The new innovative and sensitive approach is transferrable to any water body worldwide with available ship-tracking data, supporting target-oriented monitoring and evidence-based management practices.
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Spondylitis/spondylodiscitis is still an uncommon diagnosis often with a delay in diagnosis and treatment due to the uncharacteristic symptoms. The aim of this study is to increase the awareness and ...outline a pattern of investigation and treatment. We present six children with an average age of 23 months (19-33 months) at time of diagnosis, conservative treated and with a mean follow-up of 31 months (12-65 months). The evaluation included past medical history, clinical symptoms, X-rays, MRI-investigations and laboratory studies CRP, erythrocytes sedimentation rate (ESR), white blood count (WBC) and blood cultures during the course of treatment and follow-up. The predominate clinical findings were: limp, refusal to walk and/or back pain. The mean duration of symptoms until presentation at our clinic was 24 days (4-42 days), the final diagnosis was set after an average of 12 days (7-14 days). Laboratory findings were unspecific but ESR best correlated with the clinical symptoms during the therapy. Five patients were treated by parenteral antibiotics for a minimum of 3 weeks, followed by oral antibiotics adapted to the clinical and laboratory findings. One child received a combined antituberculous chemotherapy after positive skin test for tbc. All six children were immobilized with a body-plaster-cast for an average time of 15 weeks (5-26 weeks). Four patients additionally were treated by further corset therapy for an average of 10 months (3-18 months). Radiological findings on plane X-rays (a.p. and lateral views) at time of diagnosis were decreased height of the disk space and erosions of adjacent vertebral endplates and residues of these radiological changes with signs of bony healing (sclerotic vertebral endplates or partial fusion) were seen at the latest follow-up. There was no case of instability or deformity like scoliosis or kyphosis. The MRI showed the earliest detectable typical vertebral bone involvements and confirmed the diagnosis in combination with laboratory findings and clinical symptoms. Spondylitis/spondylodiscitis should be considered as diagnosis in children with refusal to walk or gait disturbances especially in combination with elevated ESR. MRI is the tool of choice to set the diagnosis early. With an adequate and early therapy of bracing (body-plaster-cast), antibiotics and clinical monitoring good long-term result without spine instability or deformity can be achieved.
Malignant migrating partial seizures in infancy is an age-specific epilepsy syndrome, resistant to conventional antiepileptic drugs in most cases. Since the first description of 14 infants in 1995, ...only 16 additional patients have been reported. We add a further case and present a video that shows a typical generalizing tonic seizure arising from the right temporo-occipital area and slowly spreading about both hemispheres. In addition to other symptoms previously described, almost complete arrest of brain growth with onset of seizures and evolution of distinctive secondary microcephaly were striking features in this patient. Published with video sequences.
In most mammals, dispersal rates are higher in males than in females. Using behavioural and genetic data of individually marked bats, we show that this general pattern is reversed in the greater ...sac-winged bat (Saccopteryx bilineata). Dispersal is significantly female biased and male philopatry in combination with rare male immigration causes a patrilineal colony structure. Female dispersal helps avoid father-daughter inbreeding, as male tenure exceeds female age at first breeding in this bat species. Furthermore, our data suggest that females may engage in extra-harem copulations to mate with genetically dissimilar males, and thus avoid their male descendants as mating partners. Acquaintance with the natal colony might facilitate territory takeover since male sac-winged bats queue for harem access. Given the virtual absence of male immigration and the possible lower reproductive success of dispersing males, we argue that enhancing the likelihood of settlement of male descendants could be adaptive despite local mate competition. We conclude that resource defence by males is important in promoting male philopatry, and argue that the potential overlap of male tenure and female first conception is the driving force for females to disperse.
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▶ RNAi is particularly successful in the family Saturniidae. ▶ RNAi is particularly successful in genes involved in immunity. ▶ Gene expression in epidermal tissues seems to be most ...difficult to silence. ▶ Gene silencing by feeding dsRNA requires high concentrations for success.
Gene silencing through RNA interference (RNAi) has revolutionized the study of gene function, particularly in non-model insects. However, in Lepidoptera (moths and butterflies) RNAi has many times proven to be difficult to achieve. Most of the negative results have been anecdotal and the positive experiments have not been collected in such a way that they are possible to analyze. In this review, we have collected detailed data from more than 150 experiments including all to date published and many unpublished experiments. Despite a large variation in the data, trends that are found are that RNAi is particularly successful in the family Saturniidae and in genes involved in immunity. On the contrary, gene expression in epidermal tissues seems to be most difficult to silence. In addition, gene silencing by feeding dsRNA requires high concentrations for success. Possible causes for the variability of success in RNAi experiments in Lepidoptera are discussed. The review also points to a need to further investigate the mechanism of RNAi in lepidopteran insects and its possible connection to the innate immune response. Our general understanding of RNAi in Lepidoptera will be further aided in the future as our public database at
http://insectacentral.org/RNAi will continue to gather information on RNAi experiments.
1 Department of Anesthesiology, 2 Institute for Surgical Research, and 3 Department of Anatomy II, University of Munich, D-81377 Munich, Germany
Submitted 8 March 2004
; accepted in final form 7 June ...2004
Permeability of the endothelial barrier to large molecules plays a pivotal role in the manifestation of early acute lung injury. We present a novel and sensitive technique that brings microanatomical visualization and quantification of microvascular permeability in line. White New Zealand rabbits were anesthetized and ventilated mechanically. Rabbit serum albumin (RSA) was labeled with colloidal gold particles. We quantified macromolecular leakage of gold-labeled RSA and thickening of the gas exchange distance by electron microscopy, taking into account morphology of microvessels. The control group receiving a saline solution represented a normal gas exchange barrier without extravasation of gold-labeled albumin. Infusion of lipopolysaccharide (LPS) resulted in a significant displacement of gold-labeled albumin into pulmonary cells, the lung interstitium, and even the alveolar space. Correspondingly, intravital fluorescence microscopy and digital image analysis indicated thickening of width of alveolar septa. The findings were accompanied by a deterioration of alveolo-arterial oxygen difference, whereas wet/dry ratio and albumin concentration in the bronchoalveolar lavage fluid failed to detect that early stage of pulmonary edema. Inhibition of the nuclear enzyme poly(ADP-ribose) synthetase by 3-aminobenzamide prevented LPS-induced microvascular injury. To summarize: colloidal gold particles visualized by standard electron microscopy are a new and very sensitive in vivo marker of microvascular permeability in early acute lung injury. This technique enabling detailed microanatomical and quantitative pathophysiological characterization of edema formation can form the basis for evaluating novel treatment strategies against acute lung injury.
lipopolysaccharide; microvascular permeability; electron microscopy; intravital microscopy; poly(ADP-ribose) synthetase
Address for reprint requests and other correspondence: A. E. Goetz, Dept. of Anesthesiology, Ludwig-Maximilians-Univ. Munich, Marchioninistr. 15, D-81377 Munich, Germany (E-mail: alwin.goetz{at}med.uni-muenchen.de )
The p53 family in hepatocellular carcinoma Kunst, Claudia; Haderer, Marika; Heckel, Sebastian ...
Translational cancer research,
12/2016, Letnik:
5, Številka:
6
Journal Article
Increasing applications of compound-specific chlorine isotope analysis (CSIA) emphasize the need for chlorine isotope standards that bracket a wider range of isotope values in order to ensure ...accurate results. With one exception (USGS38), however, all international chlorine isotope reference materials (chloride and perchlorate salts) fall within the narrow range of one per mille. Furthermore, compound-specific working standards are required for chlorine CSIA but are not available for most organic substances. We took advantage of isotope effects in chemical dehalogenation reactions to generate (i) silver chloride (CT16) depleted in 37Cl/35Cl and (ii) compound-specific standards of the herbicides acetochlor and S-metolachlor (Aceto2, Metola2) enriched in 37Cl/35Cl. Calibration against the international reference standards USGS38 (−87.90 ‰) and ISL-354 (+0.05 ‰) by complementary methods (gas chromatography-isotope ratio mass spectrometry, GC-IRMS, versus gas chromatography-multicollector inductively coupled plasma mass spectrometry, GC-MC-ICPMS) gave a consensus value of δ37ClCT16 = −26.82 ± 0.18 ‰. Preliminary GC-MC-ICPMS characterization of commercial Aceto1 and Metola1 versus Aceto2 and Metola2 resulted in tentative values of δ37ClAceto1 = 0.29 ± 0.29 ‰, δ37ClAceto2 = 18.54 ± 0.20 ‰, δ37ClMetola1 = −4.28 ± 0.17 ‰ and δ37ClMetola2 = 5.12 ± 0.27 ‰. The possibility to generate chlorine isotope in-house standards with pronounced shifts in isotope values offers a much-needed basis for accurate chlorine CSIA.
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