• Dencker Broe opublikował 5 miesięcy, 1 tydzień temu

    0001) and 6-12 months (3.8%; χ2 = 26.1, df = 1, P  less then  0.0001). Twenty genotypes of E. bieneusi were detected, including six known ones and 14 new genotypes. Among them, nine genotypes in 45% E. bieneusi-positive specimens belonged to the zoonotic group 1. Similarly, three G. duodenalis assemblages were detected, including A (in 2 horses and 30 donkeys), B (in 6 horses and 29 donkeys), and E (in 1 horse); three donkeys had coinfections of assemblages A and B. The assemblage A isolates identified all belong to the sub-assemblage AI. These results indicate that unlike in other farm animals, there is a common occurrence of zoonotic E. bieneusi and G. duodenalis genotypes in horses and donkeys.Major histocompatibility complex class II (MHC II) is an essential molecule triggering the adaptive immune response by the presentation of pathogens to helper T cells. The association between individual MHC II variants and various parasites has become a frequent finding in studies of vertebrate populations. However, although bird ectoparasites have a significant effect on their host’s fitness, and the host’s immune system can regulate ectoparasitic infections, no study has yet investigated the association between MHC II polymorphism and ectoparasite infection in the populations of free-living birds. Here, we test whether an association exists between the abundance of a chewing louse (Myrsidea nesomimi) and MHC II polymorphism of its hosts, the Galápagos mockingbirds (Mimus). We have found that the presence of two MHC II supertypes (functionally differentiated clusters) was significantly associated with louse abundance. This pattern supports the theory that a co-evolutionary interaction stands behind the maintenance of MHC polymorphism. Moreover, we have found a positive correlation between louse abundance and heterophil/lymphocyte ratio (an indicator of immunological stress) that serves as an additional piece of evidence that ectoparasite burden is affected by immunological state of Galápagos mockingbirds.R. vomitoria (RV), a plant used locally in the management of psychotic disorders, adversely affects the brain functionally and structurally. Such adverse reports, as well as the potential of G. latifolium (GL) to mitigate same warranted this investigation on the combined actions of RV and GL on the amygdala. Twenty-four male CD-1 mice weighing 22-27 g were divided into four groups (n = 6) Control (20 ml/kg body weight, b.w., distilled water); RV (200 mg/kg b.w.), GL (200 mg/kg b.w.), and RV (200 mg/kg b.w.) and GL (200 mg/kg b.w.) combination orally, and for 14 days. On day 15, the elevated-plus maze test was carried out and the animals sacrificed, and processed for histological and immunohistochemical studies. Neurobehavioural results showed significant decrease (p[Formula see text] 0.001) in stretch-attend posture, time spent in closed arms, grooming frequency, protected head-dip, as well as significantly (p [Formula see text] 0.01) increased time spent in the open arms and unprotected head-dips of the RV group. The combined RV and GL groups showed no such differences in these parameters. Histologically, the amygdala showed hypertrophied cells, with pyknotic and karyorrhectic nuclei, and reduced expression of Nissl substance in the RV group, while the combined RV and GL group showed less degenerative features. Glial fibrillary acidic protein expression (GFAP) was increased in the RV group, while the combined RV and GL group showed reduced expression. In conclusion, RV root bark extract has adverse effects on the microstructure of murines’ amygdala and their behaviour, which may be ameliorated by GL.We investigated the architecture of periodontal ligament regenerated by an enamel matrix derivative (EMD, Emdogain®) coating on the surface of hydroxyapatite (EMD-HA). Immediately after extraction of the maxillary first molar in rats, HA alone or EMD-HA was implanted into the socket. At 5 days, and 2 and 4 weeks after implantation, the specimens were examined by light and transmission electron microscopy, and immunohistochemistry for periostin and matrix metalloproteinase (MMP)-13. Histological observations revealed a large number of fibroblasts and well-developed blood capillaries in the fibrous connective tissue surrounding EMD-HA at 5 days. Ultrastructural analysis showed a distinct difference in the architecture of the fibrous connective tissue. As compared with the poorly constructed architecture of HA, EMD-HA had an orderly alignment of fibroblasts and bundled collagen fibers, with some fibroblasts in the cytoplasm showing collagen fiber phagocytosis. Periostin immunoreactivity was observed in the fibrous connective tissue around EMD-HA at each time point, but was not seen in HA at 5 days and 2 weeks. MMP-13 immunoreactivity was intensely localized in fibroblasts at 5 days and 2 weeks in EMD-HA. The present results indicate that EMD may greatly contribute to a well-developed architecture accompanied by orderly alignment of fibroblasts and bundled collagen fibers, through accelerated induction of periostin, maintenance of fibrillogenesis, and degradation of collagen fibers by extracellular proteinase and phagocytosis.BACKGROUND AND OBJECTIVES MCLA-128 is a bispecific monoclonal antibody targeting the HER2 and HER3 receptors and is in development to overcome HER3-mediated resistance to anti-HER2 therapies. The aims of this analysis were to characterize the population pharmacokinetics of MCLA-128 in patients with various solid tumors, to evaluate patient-related factors that affect the disposition of MCLA-128, and to assess whether flat dosing is appropriate. METHODS MCLA-128 concentration data following intravenous administration were collected in a phase I/II clinical trial. Pharmacokinetic data were analyzed using non-linear mixed-effects modeling. Different compartmental models were evaluated. Various body size parameters including body weight, body surface area, and fat-free mass were evaluated as covariates in addition to age, sex, HER2 status, and tumor burden. RESULTS In total, 1115 serum concentration measurements were available from 116 patients. The pharmacokinetics of MCLA-128 was best described by a two-compartment model with linear and non-linear (Michaelis-Menten) clearance. Fat-free mass significantly affected the linear clearance and volume of distribution of the central compartment of MCLA-128, explaining 8.4% and 5.6% of inter-individual variability, respectively. Tumor burden significantly affected the non-linear clearance capacity. Simulations demonstrated that dosing based on body size parameters resulted in similar area under the plasma concentration-time curve for a dosing interval (AUC0-τ), maximum and trough concentrations of MCLA-128, compared to flat dosing. CONCLUSIONS This analysis demonstrated that the pharmacokinetics of MCLA-128 exhibits similar disposition characteristics to other therapeutic monoclonal antibodies and that a flat dose of MCLA-128 in patients with various solid tumors is appropriate.Trace amines, including β-phenylethylamine, p-octopamine, p-tyramine, and tryptamine, are produced in high levels in invertebrates where they play major roles in homeostasis regulation in a manner similar to that of adrenergic systems in mammals (Rutigliano et al. in Front Pharmacol 8987, 2017; Gainetdinov et al. in Pharmacol Rev 70(3)549-620, 2018; Nagaya et al. in Neurosci Lett 329(3)324-328, 2002). In mammals, however, their levels are very low, initially prompting these molecules to be termed „trace” or „minor” amines in mammals with only a secondary role in the regulation of more abundant biogenic amines including catecholamines and serotonin (Gainetdinov et al. in Pharmacol Rev 70(3)549-620, 2018). The more recent discovery of trace amine-associated receptors (TAARs) revealed major, previously unsuspected roles of the trace amines and has led to increasing interest within the scientific community. For example, TAARs have been proposed to modulate signaling through dopamine (Schwartz et al. in Expert Opi periphery. These topics are both highly timely and of considerable importance not only for those working in the field but also for the neuroscience community at large.Behçet’s syndrome (BS) is a multisystemic disorder displaying a marked variability across different geographic areas. The main aim of this study was to analyze demographic and clinical features of a cohort of BS patients diagnosed in three tertiary referral centers in Italy and detect potential associations between the different manifestations. Medical records of 396 patients (218 females, 178 males) were retrospectively analyzed. Mean age at onset was 30.00 ± 18.75 years with a female-to-male ratio of 1.221. Mucocutaneous features were the most frequent starting manifestations of BS, followed by eye inflammation. Erythema nodosum (p = 0.007), arthritis/arthralgias (p = 0.0115), and central nervous system (CNS) signs (p = 0.014) were significantly over-represented in female patients, whereas male gender was associated with lower mean age at onset (p = 0.031), higher frequency of pseudofollicular lesions, and uveitis (p = 0.00134 and p  less then  0.0001 respectively), particularly for posterior segment involvement and panuveitis (p  less then  0.0001). Regarding the association between disease features, genital ulcers were negatively associated with uveitis (p  less then  0.0001) and vascular involvement (p  less then  0.0001). Other negative associations were detected between uveitis and gastrointestinal involvement (p = 0.008), pseudofolliculitis and CNS signs (p = 0.031), vascular involvement (p = 0.002) and erythema nodosum (p = 0.013). Logistic regression identified male gender and genital ulcers, respectively, with a higher (OR 2.199 [1.397-3.461], p  less then  0.001) and lower risk (OR 0.157 [0.090-0.273], p  less then  0.0001) of developing major organ involvement. Our evaluations found that the disease had started mostly in the second and third decade with most severe features in the male gender, and that patients presenting with mucocutaneous manifestations were less prone to develop major organ involvement.Recently, the number of patients undergoing intensity-modulated radiation therapy and volumetric modulated arc therapy has increased with the expansion of the adaptation site. However, it is necessary to improve the efficiency of time-consuming dose verification. Therefore, patient-specific quality assurance is expected to shift from dose verification using a conventional ionization chamber dosimeter and film to a three-dimensional dose verification system. However, caution is required when using a three-dimensional dose verification system, especially when it comes to the calibration of the detector. Calibration is performed regularly, but not all necessary verifications are done routinely. There are many uncertainties on how the sensitivity of the three-dimensional dose verification system changes over time. In this study, on the same day, when dose verification using a three-dimensional system for one head and neck case was performed, dose verification using a conventional ionization chamber dosimeter and film was also performed once every two months, for 2 years.

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