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1.
Glob Chang Biol ; 30(3): e17225, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38462708

RESUMO

It is well known that biodiversity positively affects ecosystem functioning, leading to enhanced ecosystem stability. However, this knowledge is mainly based on analyses using single ecosystem functions, while studies focusing on the stability of ecosystem multifunctionality (EMF) are rare. Taking advantage of a long-term grassland biodiversity experiment, we studied the effect of plant diversity (1-60 species) on EMF over 5 years, its temporal stability, as well as multifunctional resistance and resilience to a 2-year drought event. Using split-plot treatments, we further tested whether a shared history of plants and soil influences the studied relationships. We calculated EMF based on functions related to plants and higher-trophic levels. Plant diversity enhanced EMF in all studied years, and this effect strengthened over the study period. Moreover, plant diversity increased the temporal stability of EMF and fostered resistance to reoccurring drought events. Old plant communities with shared plant and soil history showed a stronger plant diversity-multifunctionality relationship and higher temporal stability of EMF than younger communities without shared histories. Our results highlight the importance of old and biodiverse plant communities for EMF and its stability to extreme climate events in a world increasingly threatened by global change.


Assuntos
Ecossistema , Pradaria , Biodiversidade , Plantas , Solo
2.
Inflamm Bowel Dis ; 2024 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-38507608

RESUMO

BACKGROUND: Antitumor necrosis factor (anti-TNF) antibody treatment has led to marked improvements in the management of patients with inflammatory bowel diseases (IBDs). Nevertheless, anti-TNF therapy is associated with potential adverse drug reactions (ADRs). Our prospective, randomized trial investigated the effect of intensified clinical pharmacist counselling in a multidisciplinary team on medication safety in anti-TNF-treated IBD patients. METHODS: Patients with IBD with ongoing anti-TNF treatment were enrolled in our tertiary center AdPhaNCED trial and randomized to either receive conventional standard of care (control group) or additional clinical pharmacist counselling (intervention group) over 12 months. The primary end point consisted of the number and severity of ADRs associated with anti-TNF therapy. Secondary end points included patient satisfaction with medication information and medication safety. RESULTS: One hundred twenty-seven IBD patients were included in this study. Anti-TNF-related ADRs were significantly lower in the intervention compared with the control group (0.20 vs 0.32 [mean] ADR/patient/month, P = .006) after 12 months. The risk of more severe ADRs (Common Terminology Criteria for Adverse Events [CTCAE] grade ≥2) was significantly higher in the control compared with the intervention group (hazard ratio, 0.34; P = .001). The probability of ADR resolution (hazard ratio, 2.02; P < .001) and patient satisfaction with medication information (14.82 vs 11.60; P < .001) were significantly higher in the intervention group compared with the control group. CONCLUSIONS: Our study results demonstrate that intensified pharmacist counselling significantly reduces the occurrence and severity of therapy-related ADRs and improves patient satisfaction. Clinical pharmacists should therefore be part of a holistic approach to IBD care delivered by a multidisciplinary team.


The prospective, randomized AdPhaNCED trial demonstrated that anti-TNF-treated IBD patients had diminished and less severe drug-related adverse reactions and higher patient satisfaction when they received intensified pharmacist counselling in comparison with conventional standard of care over 12 months.

3.
Int J Mol Sci ; 24(19)2023 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-37834391

RESUMO

Obesity is characterized by the expansion of the adipose tissue, usually accompanied by inflammation, with a prominent role of macrophages infiltrating the visceral adipose tissue (VAT). This chronic inflammation is a major driver of obesity-associated comorbidities. Four-and-a-half LIM-domain protein 2 (FHL2) is a multifunctional adaptor protein that is involved in the regulation of various biological functions and the maintenance of the homeostasis of different tissues. In this study, we aimed to gain new insights into the expression and functional role of FHL2 in VAT in diet-induced obesity. We found enhanced FHL2 expression in the VAT of mice with Western-type diet (WTD)-induced obesity and obese humans and identified macrophages as the cellular source of enhanced FHL2 expression in VAT. In mice with FHL2 deficiency (FHL2KO), WTD feeding resulted in reduced body weight gain paralleled by enhanced energy expenditure and uncoupling protein 1 (UCP1) expression, indicative of activated thermogenesis. In human VAT, FHL2 was inversely correlated with UCP1 expression. Furthermore, macrophage infiltration and the expression of the chemokine MCP-1, a known promotor of macrophage accumulation, was significantly reduced in WTD-fed FHL2KO mice compared with wild-type (wt) littermates. While FHL2 depletion did not affect the differentiation or lipid metabolism of adipocytes in vitro, FHL2 depletion in macrophages resulted in reduced expressions of MCP-1 and the neuropeptide Y (NPY). Furthermore, WTD-fed FHL2KO mice showed reduced NPY expression in VAT compared with wt littermates, and NPY expression was enhanced in VAT resident macrophages of obese individuals. Stimulation with recombinant NPY induced not only UCP1 expression and lipid accumulation but also MCP-1 expression in adipocytes. Collectively, these findings indicate that FHL2 is a positive regulator of NPY and MCP-1 expression in macrophages and herewith closely linked to the mechanism of obesity-associated lipid accumulation and inflammation in VAT. Thus, FHL2 appears as a potential novel target to interfere with the macrophage-adipocyte crosstalk in VAT for treating obesity and related metabolic disorders.


Assuntos
Gordura Intra-Abdominal , Neuropeptídeo Y , Animais , Humanos , Camundongos , Tecido Adiposo/metabolismo , Dieta , Dieta Hiperlipídica , Inflamação/metabolismo , Gordura Intra-Abdominal/metabolismo , Proteínas com Homeodomínio LIM/metabolismo , Lipídeos , Macrófagos/metabolismo , Camundongos Endogâmicos C57BL , Proteínas Musculares/genética , Proteínas Musculares/metabolismo , Neuropeptídeo Y/metabolismo , Obesidade/metabolismo , Fatores de Transcrição/metabolismo
4.
Natl Sci Rev ; 10(7): nwad109, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37575691

RESUMO

Ever-growing human population and nutritional demands, supply chain disruptions, and advancing climate change have led to the realization that changes in diversity and system performance are intimately linked. Moreover, diversity and system performance depend on heterogeneity. Mitigating changes in system performance and promoting sustainable living conditions requires transformative decisions. Here, we introduce the heterogeneity-diversity-system performance (HDP) nexus as the conceptual basis upon which to formulate transformative decisions. We suggest that managing the heterogeneity of systems will best allow diversity to provide multiple benefits to people. Based on ecological theory, we pose that the HDP nexus is broadly applicable across systems, disciplines, and sectors, and should thus be considered in future decision making as a way to have a more sustainable global future.

5.
Circulation ; 148(13): 989-999, 2023 09 26.
Artigo em Inglês | MEDLINE | ID: mdl-37624364

RESUMO

BACKGROUND: Limited information is available on the comparative efficacy and safety of different stent platforms in patients at high bleeding risk undergoing an abbreviated dual antiplatelet therapy duration after percutaneous coronary intervention (PCI). The aim of this study was to compare the safety and effectiveness of the biodegradable-polymer sirolimus-eluting stent with the durable-polymer zotarolimus-eluting stent in patients at high bleeding risk receiving 1 month of dual antiplatelet therapy after PCI. METHODS: The Bioflow-DAPT Study is an international, randomized, open-label trial conducted at 52 interventional cardiology hospitals in 18 countries from February 24, 2020, through September 20, 2021. Patients with a clinical indication to PCI because of acute or chronic coronary syndrome who fulfilled 1 or more criteria for high bleeding risk were eligible for enrollment. Patients were randomized to receive either biodegradable-polymer sirolimus-eluting stents or durable-polymer, slow-release zotarolimus-eluting stents after successful lesion preparation, followed by 1 month of dual antiplatelet therapy and thereafter single antiplatelet therapy. The primary outcome was the composite of death from cardiac causes, myocardial infarction, or stent thrombosis at 1 year, and was powered for noninferiority, with an absolute margin of 4.1% at 1-sided 5% alpha. RESULTS: A total of 1948 patients at high bleeding risk were randomly assigned (1:1) to receive biodegradable-polymer sirolimus-eluting stents (969 patients) or durable-polymer zotarolimus-eluting stents (979 patients). At 1 year, the primary outcome was observed in 33 of 969 patients (3.6%) in the biodegradable-polymer sirolimus-eluting stent group and in 32 of 979 patients (3.4%) in the durable-polymer zotarolimus-eluting stent group (risk difference, 0.2 percentage points; upper boundary of the 1-sided 95% CI, 1.8; upper boundary of the 1-sided 97.5% CI, 2.1; P<0.0001 for noninferiority for both tests). CONCLUSIONS: Among patients at high risk for bleeding who received 1 month of dual antiplatelet therapy after PCI, the use of biodegradable-polymer sirolimus-eluting stents was noninferior to the use of durable-polymer zotarolimus-eluting stents with regard to the composite of death from cardiac causes, myocardial infarction, or stent thrombosis. REGISTRATION: URL: https://www. CLINICALTRIALS: gov; Unique identifier: NCT04137510.


Assuntos
Doença da Artéria Coronariana , Stents Farmacológicos , Infarto do Miocárdio , Intervenção Coronária Percutânea , Trombose , Humanos , Everolimo , Doença da Artéria Coronariana/terapia , Stents Farmacológicos/efeitos adversos , Polímeros , Intervenção Coronária Percutânea/efeitos adversos , Inibidores da Agregação Plaquetária/efeitos adversos , Resultado do Tratamento , Implantes Absorvíveis , Sirolimo/efeitos adversos , Infarto do Miocárdio/tratamento farmacológico , Stents/efeitos adversos , Trombose/etiologia
6.
J Cardiovasc Transl Res ; 16(5): 1135-1143, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37264295

RESUMO

The optimal duration of dual antiplatelet therapy (DAPT) in high bleeding risk (HBR) patients undergoing percutaneous coronary intervention (PCI) with implantation of the Orsiro Mission stent remains unclear. The BIOFLOW-DAPT (clinicaltrials.gov, NCT04137510) trial is a prospective, multi-center, randomized controlled study designed to assess the safety of the Orsiro Mission versus the Resolute Onyx stent in HBR patients. Patients are treated with DAPT (aspirin and a P2Y12 inhibitor) for 1 month, followed by a single antiplatelet therapy (SAPT). The primary endpoint is the composite of cardiac death, myocardial infarction, and definite or probable stent thrombosis at 1 year. With a final sample size of 1948 HBR patients, this study is powered to assess the noninferiority of the Orsiro Mission stent with respect to the primary study endpoint. The BIOFLOW-DAPT is the first randomized clinical trial investigating 1-month DAPT duration in HBR patients after implantation of the Orsiro Mission stent.Trial Registration: ClinicalTrials.gov number, NCT04137510 Study design and key features. Patient selection starts before the index PCI, when consented patients will be randomized to the Orsiro Mission or the Resolute Onyx stent with mandated 1-month DAPT. At 1 month, eligibility is reassessed and if met, patients will discontinue DAPT and continue with P2Y12 inhibitor or aspirin monotherapy. PCI, percutaneous coronary intervention; DAPT, dual antiplatelet therapy; DES, drug-eluting stent; HBR, high bleeding risk; P2Y12i, P2Y12 inhibitor; ST, stent thrombosis.


Assuntos
Stents Farmacológicos , Intervenção Coronária Percutânea , Trombose , Humanos , Inibidores da Agregação Plaquetária , Stents Farmacológicos/efeitos adversos , Intervenção Coronária Percutânea/efeitos adversos , Estudos Prospectivos , Quimioterapia Combinada , Hemorragia/induzido quimicamente , Aspirina/uso terapêutico , Stents , Trombose/prevenção & controle , Trombose/induzido quimicamente , Resultado do Tratamento
7.
Langenbecks Arch Surg ; 408(1): 191, 2023 May 12.
Artigo em Inglês | MEDLINE | ID: mdl-37171640

RESUMO

PURPOSE: The objective of this work was to uncover inequalities in access to liver transplantation in Bavaria, Germany. METHODS: For this purpose, the annual transplantation rate per 1 million inhabitants for the respective districts was determined from the aggregated postal codes of the place of residence of transplanted patients. The variables examined were proximity and travel time to the nearest transplant center, as well as the care category of the regional hospital. In addition, we assessed whether the head of gastroenterology at the regional hospital through which liver transplant candidates are referred was trained at a liver transplant center. RESULTS: We could not demonstrate a direct relationship between proximity or travel time to the nearest transplant center and access to liver transplantation. Multivariate regression analysis shows that liver transplant training (p < 0.0001) of the chief physician (gastroenterologist) of the regional hospital was the most decisive independent factor for access to liver transplantation within a district. CONCLUSION: We show that the transplant training experience of the head of gastroenterology at a regional hospital is an independent factor for the regional transplantation rate. Therefore, it appears important to maintain some liver transplant expertise outside the transplant centers in order to properly identify and assign potential transplant candidates for transplantation.


Assuntos
Transplante de Fígado , Médicos , Humanos , Alemanha
9.
Ecol Evol ; 13(3): e9883, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36911317

RESUMO

Positive plant diversity-productivity relationships are known to be driven by complementary resource use via differences in plant functional traits. Moreover, soil properties related to nutrient availability were shown to change with plant diversity over time; however, it is not well-understood whether and how such plant diversity-dependent soil changes and associated changes in functional traits contribute to positive diversity-productivity relationships in the long run. To test this, we investigated plant communities of different species richness (1, 2, 6, and 9 species) in a 15-year-old grassland biodiversity experiment. We determined community biomass production and biodiversity effects (net biodiversity [NEs], complementarity [CEs], and selection effects [SEs]), as well as community means of plant functional traits and soil properties. First, we tested how these variables changed along the plant diversity gradient and were related to each other. Then, we tested for direct and indirect effects of plant and soil variables influencing community biomass production and biodiversity effects. Community biomass production, NEs, CEs, SEs, plant height, root length density (RLD), and all soil property variables changed with plant diversity and the presence of the dominant grass species Arrhenatherum elatius (increase except for soil pH, which decreased). Plant height and RLD for plant functional traits, and soil pH and organic carbon concentration for soil properties, were the variables with the strongest influence on biomass production and biodiversity effects. Our results suggest that plant species richness and the presence of the dominant species, A. elatius, cause soil organic carbon to increase and soil pH to decrease over time, which increases nutrient availability favoring species with tall growth and dense root systems, resulting in higher biomass production in species-rich communities. Here, we present an additional process that contributes to the strengthening positive diversity-productivity relationship, which may play a role alongside the widespread plant functional trait-based explanation.

10.
Glob Chang Biol ; 29(12): 3476-3488, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36931867

RESUMO

Root exudates are an important pathway for plant-microbial interactions and are highly sensitive to climate change. However, how extreme drought affects root exudates and the main components, as well as species-specific differences in response magnitude and direction, are poorly understood. In this study, root exudation rates of total carbon (C) and its components (e.g., sugar, organic acid, and amino acid) were measured under the control and extreme drought treatments (i.e., 70% throughfall reduction) by in situ collection of four tree species with different growth rates in a subtropical forest. We also quantified soil properties, root morphological traits, and mycorrhizal infection rates to examine the driving factors underlying variations in root exudation. Our results showed that extreme drought significantly decreased root exudation rates of total C, sugar, and amino acid by 17.8%, 30.8%, and 35.0%, respectively, but increased root exudation rate of organic acid by 38.6%, which were largely associated with drought-induced changes in tree growth rates, root morphological traits, and mycorrhizal infection rates. Specifically, trees with relatively high growth rates were more responsive to drought for root exudation rates compared with those with relatively low growth rates, which were closely related to root morphological traits and mycorrhizal infection rates. These findings highlight the importance of plant growth strategy in mediating drought-induced changes in root exudation rates. The coordinations among root exudation rates, root morphological traits, and mycorrhizal symbioses in response to drought could be incorporated into land surface models to improve the prediction of climate change impacts on rhizosphere C dynamics in forest ecosystems.


Assuntos
Ecossistema , Micorrizas , Raízes de Plantas/metabolismo , Secas , Florestas , Micorrizas/metabolismo , Árvores , Exsudatos e Transudatos/metabolismo , Compostos Orgânicos/análise , Aminoácidos/análise , Aminoácidos/metabolismo , Solo/química , Açúcares/análise , Açúcares/metabolismo , Exsudatos de Plantas/análise , Exsudatos de Plantas/metabolismo
11.
Urology ; 174: 135-140, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36736913

RESUMO

OBJECTIVE: To characterize direct-to-consumer (DTC) men's health clinics by reviewing their online content. Increasing numbers of patients are seeking treatment for erectile dysfunction (ED) and hypogonadism from DTC "men's health" clinics. Treatments are often used off-label, with lack of transparency of provider credentials and qualifications. METHODS: We identified DTC Men's Health Clinics in the United States by internet search by state using the terms, "Men's Health Clinic," and "Low T Center." All stand-alone clinics were reviewed. RESULTS: Two hundred and twenty-three clinics were reviewed, with 147 (65.9%) offered ED treatments and 196 (87.9%) offering testosterone replacement, and 120 (53.8%) offering both ED treatment and testosterone replacement. Of those clinics offering ED treatments, 93 (63.3%) advertised shockwave therapy and 84 (57.1%) PRP therapy. There were 56 (38%) who offered shockwave therapy and PRP. ICI was significantly more likely to be offered if there was a urologist on staff (p <.001). Clinic providers represented 20 different medical and alternative medicine specialties. Internal medicine was most common (17.4%), followed by family medicine (11.1%). A nonphysician (nurse practitioner or physician assistant) was listed as the primary provider in 10 clinics (4.5%) and 45 clinics (20.1%) did not list their providers. Urologists were listed as the primary provider in 10.3% of clinics. A naturopathic provider was listed as a staff member in 22 (11.6%) of clinics. CONCLUSION: There is significant heterogeneity and misinformation available to the public regarding men's health. Familiarity with and insight into practice patterns of "men's health" clinics will help provide informed patient care and counseling.


Assuntos
Disfunção Erétil , Hipogonadismo , Masculino , Humanos , Estados Unidos , Saúde do Homem , Testosterona , Hipogonadismo/diagnóstico , Hipogonadismo/tratamento farmacológico
12.
Cell Rep ; 42(2): 112059, 2023 02 28.
Artigo em Inglês | MEDLINE | ID: mdl-36729833

RESUMO

Development of liver fibrosis is paralleled by contraction of hepatic stellate cells (HSCs), the main profibrotic hepatic cells. Yet, little is known about the interplay of neprilysin (NEP) and its substrate neuropeptide Y (NPY), a potent enhancer of contraction, in liver fibrosis. We demonstrate that HSCs are the source of NEP. Importantly, NPY originates majorly from the splanchnic region and is cleaved by NEP in order to terminate contraction. Interestingly, NEP deficiency (Nep-/-) showed less fibrosis but portal hypertension upon liver injury in two different fibrosis models in mice. We demonstrate the incremental benefit of Nep-/- in addition to AT1R blocker (ARB) or ACE inhibitors for fibrosis and portal hypertension. Finally, oral administration of Entresto, a combination of ARB and NEP inhibitor, decreased hepatic fibrosis and portal pressure in mice. These results provide a mechanistic rationale for translation of NEP-AT1R-blockade in human liver fibrosis and portal hypertension.


Assuntos
Hipertensão Portal , Neuropeptídeo Y , Camundongos , Humanos , Animais , Receptores de Neuropeptídeo Y , Inibidores da Enzima Conversora de Angiotensina/farmacologia , Neprilisina , Antagonistas de Receptores de Angiotensina , Hipertensão Portal/tratamento farmacológico , Fibrose , Cirrose Hepática/tratamento farmacológico
13.
Ground Water ; 61(3): 346-362, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36114728

RESUMO

The scope of this work is to discuss the proper choice of macrodispersion coefficients in modeling contaminant transport through the advection dispersion equation (ADE). It is common to model solute concentrations in transport by groundwater with the aid of the ADE. Spreading is quantified by macrodispersivity coefficients, which are much larger than the laboratory observed pore-scale dispersivities. In the frame of stochastic theory, longitudinal macrodispersivity is related to the hydraulic conductivity spatial variability via its statistical moments (mean, variance, integral scales), which are generally determined by geostatistical analysis of field measurements. In many cases, especially for preliminary assessment of contaminant spreading, these data are not available and ad hoc values are adopted by practitioners. The present study aims at recommending dispersivity values based on a thorough analysis of tens of field experiments. Aquifers are classified as of weak, medium, and high heterogeneity and for each class a range of macrodispersivity values is recommended. Much less data are available for the transverse macrodispersivities, which are significantly smaller than the longitudinal one. Nevertheless, a few realistic values based on field data, are recommended for applications. Transport models using macrodispersivities can predict mean concentrations, different from the local ones. They can be used for estimation of robust measures, like plumes spatial moments, longitudinal mass distribution and breakthrough curves at control planes.


Assuntos
Água Subterrânea , Água Subterrânea/análise , Modelos Teóricos , Movimentos da Água
14.
Ecology ; 104(2): e3896, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36215064

RESUMO

Tree species are known to predominantly interact either with arbuscular mycorrhizal (AM) or ectomycorrhizal (EM) fungi. However, there is a knowledge gap regarding whether these mycorrhizae differently influence biodiversity-ecosystem functioning (BEF) relationships and whether a combination of both can increase community productivity. In 2015, we established a tree-diversity experiment by growing tree communities with varying species richness levels (one, two, or four species) and either with AM or EM tree species or a combination of both. We investigated basal area and annual basal area increment from 2015 to 2020 as proxies for community productivity. We found significant positive relationships between tree species richness and community productivity, which strengthened over time. Further, AM and EM tree species differently influenced productivity; however, there was no overyielding when AM and EM trees grew together. EM tree communities were characterized by low productivity in the beginning but an increase of increment over time and showed overall strong biodiversity effects. For AM tree communities the opposite was true. Although young trees did not benefit from the presence of the other mycorrhizal type, dissimilar mechanisms underlying BEF relationships in AM and EM trees indicate that maximizing tree and mycorrhizal diversity may increase ecosystem functioning in the long run.


Assuntos
Micorrizas , Árvores , Árvores/microbiologia , Ecossistema , Florestas , Biodiversidade , Microbiologia do Solo , Solo
16.
Urology ; 172: 111-114, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36481202

RESUMO

OBJECTIVE: To address historical concerns surrounding vasectomy in childless men, we sought to evaluate for the level of regret in this unique cohort. METHODS: The records of patients who underwent vasectomy via single surgeon between 2006 and 2021 were retrospectively reviewed and those who had not fathered children in any capacity at time of vasectomy were selected. We devised a 6-question survey inquiring about regret and thoughts on vasectomy reversal and assisted reproductive technology (ART). The questions are listed in Table 1. Patients were queried via a telephone call to rate their level of regret, both immediately after vasectomy and present day. The cohort was analyzed via age at time of vasectomy, time since vasectomy and marital status. RESULTS: There were 4812 overall patients who underwent vasectomy in this interval, with 205 (4.3%) who were childless. The response rate was 33.2% (68/205). Average age was 36.6 years with average time since vasectomy at time of phone call was 5.51 years. Regret rate was 4.4% immediately following vasectomy and 7.4% at time of telephone interview. A confirmatory, second consultation before vasectomy was present in 6.8% (14/205). The majority of patients 150/205 (73.1%) were married. When patients were stratified by marital status, there was no significant difference in any of the questions. The majority of patients were satisfied with their decision, with few contemplating or pursuing reversal or ART (Table 1). CONCLUSION: Regret in childless patients who undergo vasectomy is very rare, with the majority of patients feeling that their life was improved.


Assuntos
Vasectomia , Vasovasostomia , Masculino , Criança , Humanos , Adulto , Estudos Retrospectivos , Emoções , Técnicas de Reprodução Assistida
17.
J Contam Hydrol ; 251: 104096, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36308863

RESUMO

Many studies have investigated the migration and entrapment processes of source zones from dense non-aqueous phase liquid (DNAPL) contamination under different conditions. However, the characterization of occupying area by source zone (or source shape) in water-saturated aquifers is still rudimentarily considered. In this study, we demonstrated this issue (1) by providing a brief review of existing approaches for source shape consideration, (2) by proposing an approach with simple shape parameters based on the non-uniformity of source widths, and (3) by providing exemplary applications of our proposed approach on shapes already published in previous research works. Our literature review suggested that the source zone in mathematical approaches is generally characterized as simple geometrical shapes (arbitrary lines or rectangles) or system-defined parameters that contrast to complex and discontinuous shapes observed in the real world. But the characterization of such complex shapes is still not possible with acceptable efforts. Therefore, we proposed an approach to parameterize the source shape by considering the variation of width and midpoints over the depth of the entire source zone and formulate four parameters based on population statistics (mean, standard deviation). To illustrate the suitability of our approach, we applied it to the results of lab experiments, and by analyzing these complex shapes, we highlighted the potential for improving the characterization techniques of non-uniformity of the source zones.


Assuntos
Água Subterrânea , Poluentes Químicos da Água , Poluentes Químicos da Água/análise , Modelos Teóricos
18.
Int J Mol Sci ; 23(19)2022 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-36232829

RESUMO

Hepatic metastasis is the critical factor determining tumor-associated mortality in different types of cancer. This is particularly true for uveal melanoma (UM), which almost exclusively metastasizes to the liver. Hepatic stellate cells (HSCs) are the precursors of tumor-associated fibroblasts and support the growth of metastases. However, the underlying mechanisms are widely unknown. Fibroblast growth factor (FGF) signaling is dysregulated in many types of cancer. The aim of this study was to analyze the pro-tumorigenic effects of HSCs on UM cells and the role of FGFs in this crosstalk. Conditioned medium (CM) from activated human HSCs significantly induced proliferation together with enhanced ERK and JNK activation in UM cells. An in silico database analysis revealed that there are almost no mutations of FGF receptors (FGFR) in UM. However, a high FGFR expression was found to be associated with poor survival for UM patients. In vitro, the pro-tumorigenic effects of HSC-CM on UM cells were abrogated by a pharmacological inhibitor (BGJ398) of FGFR1/2/3. The expression analysis revealed that the majority of paracrine FGFs are expressed by HSCs, but not by UM cells, including FGF9. Furthermore, the immunofluorescence analysis indicated HSCs as a cellular source of FGF9 in hepatic metastases of UM patients. Treatment with recombinant FGF9 significantly enhanced the proliferation of UM cells, and this effect was efficiently blocked by the FGFR1/2/3 inhibitor BGJ398. Our study indicates that FGF9 released by HSCs promotes the tumorigenicity of UM cells, and thus suggests FGF9 as a promising therapeutic target in hepatic metastasis.


Assuntos
Neoplasias Hepáticas , Neoplasias Uveais , Proliferação de Células , Meios de Cultivo Condicionados/metabolismo , Meios de Cultivo Condicionados/farmacologia , Fatores de Crescimento de Fibroblastos/metabolismo , Células Estreladas do Fígado/metabolismo , Humanos , Neoplasias Hepáticas/metabolismo , Melanoma , Compostos de Fenilureia , Pirimidinas , Neoplasias Uveais/metabolismo
19.
Data Brief ; 43: 108481, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35935710

RESUMO

This document contains data sets of the valley depositions of the Loosbach valley and data of the Late Neolithic wetland site of Pestenacker. It consists of raw data and graphical figures of direct push-based electrical conductivity and colour logs and driving core recoveries as well as hand drilling recoveries presented by Köhler et al. [1]. We reviewed unpublished archaeological profiles to determine the incision levels of former stream phases at Pestenacker site. Here, we provide the new, reusable and accessible data set. The data sets and figures of the valley depositions can be used for further analyses, including statistical ones, to improve the methods of the direct-push sensing and to compare it with the sedimentological features recovered from driving core and hand drillings. In addition, the data set is useful for further issues in Pestenacker as well as in the whole central Europe. Especially in the circum-Alpine region, as a comparison with other pile dwellings or stilt houses built from the Neolithic to the Bronce Age.

20.
Lancet Rheumatol ; 4(9): e614-e625, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35966645

RESUMO

Background: Concerns have been raised about the reduced immunogenicity of vaccines against SARS-CoV-2 in patients with immune-mediated inflammatory diseases and the higher risk of breakthrough infections. The objective of our study was to investigate the intensity and longevity of SARS-CoV-2 vaccination responses in patients with immune-mediated inflammatory diseases, and to assess the effects of diagnosis, treatment, and adapted vaccination schedules. Methods: SARS-CoV-2 IgG antibody response after SARS-CoV-2 vaccination was measured over time in a large prospective cohort of healthy controls and participants with immune-mediated inflammatory diseases (attending or admitted to affiliated centres) between Dec 15, 2020, and Dec 1, 2021. Cohort participants with immune-mediated inflammatory diseases and control participants with no diagnosis of immune-mediated inflammatory diseases, were eligible for this analysis. Demographic data and disease-specific data were collected using a questionnaire. Humoral response was compared across treatment and disease groups, and with respect to the receipt of additional vaccinations. SARS-CoV-2 antibody response was measured by ELISA using optical density ratio units and modelled over time with age and sex adjustment using mixed-effects models. Using these models, marginal mean antibody titres and marginal risks of a poor response (optical density ratio <1·1) were calculated for each week starting from week 8 after the first vaccination to week 40. Findings: Among 5076 individuals registered, 2535 participants with immune-mediated inflammatory diseases (mean age 55·0 [15·2] years; 1494 [58·9%] women and 1041 [41·1%] men) and 1198 healthy controls (mean age 40·7 [13·5] years; 554 [46·2%] women and 644 [53·8%] men) were included in this analysis. Mean antibody titres were higher in healthy controls compared with people with immune-mediated inflammatory diseases at all timepoints, with a peak antibody response in healthy controls (mean optical density ratio 12·48; 95% CI 11·50-13·53) of more than twice that in participants with immune-mediated inflammatory diseases (5·50; 5·23-5·77; mean difference 6·98; 5·92-8·04). A poor response to vaccination was observed in participants with immune-mediated inflammatory diseases who were taking B-cell inhibitors (peak mean difference from healthy controls 11·68; 10·07-13·29) and T-cell inhibitors (peakmean difference from healthy controls 10·43; 8·33-12·53). Mean differences in antibody responses between different immune-mediated inflammatory diseases were small. Participants with immune-mediated inflammatory diseases who were given a third vaccine dose had higher mean antibody titres than did healthy controls vaccinated with two vaccine doses at 40 weeks after the initial vaccination (mean difference 1·34; 0·01-2·69). Interpretation: People with immune-mediated inflammatory diseases show a lower and less durable SARS-CoV-2 vaccination response and are at risk of losing humoral immune protection. Adjusted vaccination schedules with earlier booster doses or more frequent re-doses, or both, could better protect people with immune-mediated inflammatory diseases. Funding: Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, European Research Council, Innovative Medicine Initiative, Friedrich-Alexander-Universität Erlangen-Nürnberg, Else Kröner-Memorial Foundation.

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