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1.
Langenbecks Arch Surg ; 409(1): 94, 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38472479

RESUMO

BACKGROUND: This clinical trial explores the Sigstad score for late dumping syndrome in postoperative patients who have undergone sleeve gastrectomy (SG) or One Anastomosis Gastric Bypass (OAGB). The aims of this study are to investigate the correlations with late dumping syndrome, to evaluate the reliability and validity of the Sigstad score and to discuss a modified scoring system. METHODS: The study was conducted at the Obesity Center of the Westküstenklinikum Heide and included 271 patients. Data collection involved conducting interviews, diet diaries and measuring blood glucose levels. Non-parametric tests, logistic regression and McDonald's Omega were the selected statistical approaches. RESULTS: Body Mass Index (BMI) decreased over time (-9.67 kg/m2 at 4 months, -15.58 kg/m2 at 12 months). Preoperatively, the Sigstad score exhibited the highest value, and no occurrences of late dumping syndrome were observed. No significant differences were found in BMI concerning late dumping syndrome or Sigstad score among postoperative patients. Postoperative patients experienced an increase in gastrointestinal symptoms. The reliability test showed a McDonald's omega value of 0.509. The analysis conducted through binary logistic regression indicated dizziness as a significant predictor of late dumping syndrome; however, this finding did not hold up after performing Bonferroni correction. CONCLUSION: The Sigstad score is not a reliable or valid method for detecting late dumping syndrome after surgery for obesity and metabolic disorders. It is necessary to have alternatives that use objective measures and assess the quality of life, and that these alternatives be validated in large patient cohorts.


Assuntos
Derivação Gástrica , Hipoglicemia , Obesidade Mórbida , Humanos , Síndrome de Esvaziamento Rápido/diagnóstico , Síndrome de Esvaziamento Rápido/cirurgia , Obesidade Mórbida/cirurgia , Qualidade de Vida , Reprodutibilidade dos Testes , Derivação Gástrica/métodos , Gastrectomia/métodos , Obesidade/cirurgia , Resultado do Tratamento , Estudos Retrospectivos
2.
Gut ; 72(11): 2081-2094, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37541770

RESUMO

IL-3 has been reported to be involved in various inflammatory disorders, but its role in inflammatory bowel disease (IBD) has not been addressed so far. Here, we determined IL-3 expression in samples from patients with IBD and studied the impact of Il3 or Il3r deficiency on T cell-dependent experimental colitis. We explored the mechanical, cytoskeletal and migratory properties of Il3r -/- and Il3r +/+ T cells using real-time deformability cytometry, atomic force microscopy, scanning electron microscopy, fluorescence recovery after photobleaching and in vitro and in vivo cell trafficking assays. We observed that, in patients with IBD, the levels of IL-3 in the inflamed mucosa were increased. In vivo, experimental chronic colitis on T cell transfer was exacerbated in the absence of Il-3 or Il-3r signalling. This was attributable to Il-3r signalling-induced changes in kinase phosphorylation and actin cytoskeleton structure, resulting in increased mechanical deformability and enhanced egress of Tregs from the inflamed colon mucosa. Similarly, IL-3 controlled mechanobiology in human Tregs and was associated with increased mucosal Treg abundance in patients with IBD. Collectively, our data reveal that IL-3 signaling exerts an important regulatory role at the interface of biophysical and migratory T cell features in intestinal inflammation and suggest that this might be an interesting target for future intervention.


Assuntos
Colite , Doenças Inflamatórias Intestinais , Humanos , Linfócitos T Reguladores , Receptores de Interleucina-3/metabolismo , Interleucina-3/metabolismo , Inflamação/metabolismo , Colite/metabolismo , Doenças Inflamatórias Intestinais/metabolismo , Mucosa Intestinal/metabolismo
3.
Atheroscler Plus ; 53: 6-15, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37434912

RESUMO

Background and aims: Familial hypercholesterolemia (FH) is among the most common genetic disorders in primary care. However, only 15% or less of patients are diagnosed, and few achieve the goals for low-density lipoprotein cholesterol (LDL-C). In this analysis of the German Cascade Screening and Registry for High Cholesterol (CaRe High), we examined the status of lipid management, treatment strategies, and LDL-C goal attainment according to the ESC/EAS dyslipidemia guidelines. Methods: We evaluated consolidated datasets from 1501 FH patients diagnosed clinically and seen either by lipid specialists or general practitioners and internists. We conducted a questionnaire survey of both the recruiting physicians and patients. Results: Among the 1501 patients, 86% regularly received lipid-lowering drugs. LDL-C goals were achieved by 26% and 10% of patients with atherosclerotic cardiovascular disease (ASCVD) according to the 2016 and 2019 ESC/EAS dyslipidemia guidelines, respectively. High intensity lipid-lowering was administered more often in men than in women, in patients with ASCVD, at higher LDL-C and in patients with a genetic diagnosis of FH. Conclusions: FH is under-treated in Germany compared to guideline recommendations. Male gender, genetic proof of FH, treatment by a specialist, and presence of ASCVD appear to be associated with increased treatment intensity. Achieving the LDL-C goals of the 2019 ESC/EAS dyslipidemia guidelines remains challenging if pre-treatment LDL-C is very high.

4.
Sci Rep ; 13(1): 9297, 2023 06 08.
Artigo em Inglês | MEDLINE | ID: mdl-37291191

RESUMO

Inhibition of eukaryotic initiation factor 4A has been proposed as a strategy to fight pathogens. Rocaglates exhibit the highest specificities among eIF4A inhibitors, but their anti-pathogenic potential has not been comprehensively assessed across eukaryotes. In silico analysis of the substitution patterns of six eIF4A1 aa residues critical to rocaglate binding, uncovered 35 variants. Molecular docking of eIF4A:RNA:rocaglate complexes, and in vitro thermal shift assays with select recombinantly expressed eIF4A variants, revealed that sensitivity correlated with low inferred binding energies and high melting temperature shifts. In vitro testing with silvestrol validated predicted resistance in Caenorhabditis elegans and Leishmania amazonensis and predicted sensitivity in Aedes sp., Schistosoma mansoni, Trypanosoma brucei, Plasmodium falciparum, and Toxoplasma gondii. Our analysis further revealed the possibility of targeting important insect, plant, animal, and human pathogens with rocaglates. Finally, our findings might help design novel synthetic rocaglate derivatives or alternative eIF4A inhibitors to fight pathogens.


Assuntos
Fator de Iniciação 4A em Eucariotos , RNA , Animais , Humanos , Simulação de Acoplamento Molecular , RNA/metabolismo , Fator de Iniciação 4A em Eucariotos/genética , Fator de Iniciação 4A em Eucariotos/metabolismo , RNA Helicases DEAD-box/metabolismo
5.
Arch Pharm (Weinheim) ; 356(3): e2200491, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36482264

RESUMO

Schistosomiasis or bilharzia is caused by blood flukes of the genus Schistosoma and represents a considerable health and economic burden in tropical and subtropical regions. The treatment of this infectious disease relies on one single drug: praziquantel (PZQ). Therefore, new and potent antischistosomal compounds need to be developed. In our previous work, starting with the drug disulfiram, we developed dithiocarbamates with in vitro antischistosomal activities in the low micromolar range. Based on these results, we report in this study on the synthesis and biological testing of the structurally related dithiocarbazates against Schistosoma mansoni, one of the major species of schistosomes. In total, three series of dithiocarbazate derivatives were examined, and we found that the antischistosomal activity of N-unbranched dithiocarbazates increased by further N-substitution. Comparable tetra-substituted dithiocarbazates were rarely described in the literature, thus a synthesis route was established. Due to the elaborate synthesis, the branched dithiocarbazates (containing an N-aminopiperazine) were simplified, but the resulting branched dithiocarbamates (containing a 4-aminopiperidine) were considerably less active. Taken together, dithiocarbazate-containing compounds with an in vitro antischistosomal activity of 5 µM were obtained.


Assuntos
Esquistossomose , Esquistossomicidas , Humanos , Animais , Esquistossomicidas/farmacologia , Relação Estrutura-Atividade , Esquistossomose/tratamento farmacológico , Praziquantel/farmacologia , Praziquantel/uso terapêutico , Schistosoma mansoni
6.
RSC Chem Biol ; 3(8): 1008-1012, 2022 Aug 03.
Artigo em Inglês | MEDLINE | ID: mdl-35975004

RESUMO

The d- and l-versions of the Bcr-Abl SH2 domain (12.7 kDa) were synthesized. Key optimizations included pseudoproline incorporation, N-terminal hydrophilic tail addition and mild N-acetoxy succinimide acetylation. Their folding and activity are as for the recombinant protein. Our results will enable engineering of mirror-image monobody antagonists of the central oncoprotein Bcr-Abl.

7.
Front Microbiol ; 13: 856820, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35495702

RESUMO

Flavins are ubiquitous molecules in life as they serve as important enzyme cofactors. In the Gram-positive, soil-dwelling bacterium Bacillus subtilis, four well-characterized gene products (the enzymes RibDG, RibE, RibAB, and RibH) catalyze the biosynthesis of riboflavin (RF) from guanosine-triphosphate (GTP) and ribulose-5-phosphate (R5P). The corresponding genes form an operon together with the gene ribT (ribDG-E-AB-H-T), wherein the function of this terminal gene remained enigmatic. RibT has been structurally characterized as a GCN5-like acetyltransferase (GNAT), however, with unidentified target molecules. Bacterial two-hybrid system revealed interactions between RibT, RibH, and RibE, forming the heavy RF synthase complex. Applying single particle tracking (SPT), we found that confined (sub)diffusion of RibT is largely dependent on interacting RibE and, to a lesser degree, on interacting RibH. By induced expression of otherwise low-expressed ribT from an ectopic locus, we observed a decrease in the subpopulation considered to represent capsids of the heavy RF synthase and an increase in the subpopulation thought to represent pentamers of RibH, pointing to a putative role for RibT in capsid disassembly. Complementarily, either deletion of ribT or mutation of a key residue from RibH (K29) suspected to be the substrate of RibT for acetylation leads to increased levels of subpopulations considered as capsids of RibH-mVenus (RibH-mV) in comparison to wild-type (wt)-like cells. Thus, we provide evidence for an indirect involvement of RibT in RF biosynthesis by a putative capsid disassembling mechanism considered to involve acetylation of RibH residue K29 at the three-fold symmetry axis of 60-mer capsids.

8.
Int J Clin Pharmacol Ther ; 60(5): 207-216, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35102821

RESUMO

OBJECTIVES: To evaluate the representativeness of the German Oncology Dynamics (OD) dataset by comparing its projected patient population structure with that outlined in published epidemiological literature. MATERIALS AND METHODS: The OD is an international cross-sectional semi-retrospective survey collecting anonymized patient cases from a representative panel of physicians via a web-based questionnaire; the cases are quality-checked and projected to the drug-treated prevalence using physician workload information. The present study verifies the OD 2018 projected patient proportions by indication and sex against prevalence figures in IARC's Globocan and the Cancer in Germany report by the Robert Koch Institute. Additionally, age group and metastasis presence distributions in gonadotropin-releasing hormone analog (GnRHa)-treated prostate cancer patients are compared with the findings of a registry-based study: Retrospective Analysis of Patients with Prostate Cancer Initiating GnRH Agonists/Antagonists Therapy Using a German Claims Database: Epidemiological and Patient Outcomes by Hupe et al. [3]. RESULTS: The OD demonstrated a cancer type distribution similar to the comparator sources. Cancer-specific sex distribution differences could be attributed to real-world diagnosis and treatment patterns. The age group distributions of GnRH-treated prostate cancer patients did not differ significantly between the OD and the Hupe et al. [3] study according to confidence interval comparisons and a Kolmogorov-Smirnov test. CONCLUSION: Projected patient distributions for the OD Germany were similar to those documented in the published literature. The dissimilarities can be attributed to the low drug-treated prevalence of some cancer types and sex-specific diagnosis timeline differences. Further investigations are needed to verify the reliability of histological biomarker data as well as patient demographics in other countries.


Assuntos
Neoplasias da Próstata , Estudos Transversais , Hormônio Liberador de Gonadotropina , Humanos , Masculino , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/epidemiologia , Reprodutibilidade dos Testes , Estudos Retrospectivos
9.
Nutr Res ; 89: 10-22, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33878569

RESUMO

The health benefits of carefully restricting the energy intake in a strategic manner whilst avoiding malnutrition are widely discussed. In the recent years, the great impact of the gut microbiota on its host has been clarified more and more. Since the gut microbiota produces a number of metabolites and molecules that can affect host metabolism, modulating it with dietary restriction can influence the health and the progression of disease of its host on various levels. This review comprises 15 studies investigating the effect of different variants of fasting and caloric restriction on the gastrointestinal microbiome and its metabolites. The data suggest that changing the gut microbiota composition by dietary restriction has the potential to positively influence the progression of several diseases such as obesity, diabetes, neurological diseases or inflammatory bowel disease. Finally, the relevance of the findings for clinical practice is evaluated and approaches for future research are proposed.


Assuntos
Restrição Calórica , Microbioma Gastrointestinal , Trato Gastrointestinal/microbiologia , Tecido Adiposo/fisiologia , Animais , Encéfalo/metabolismo , Doenças do Sistema Nervoso Central/dietoterapia , Doenças do Sistema Nervoso Central/microbiologia , Colo/microbiologia , Colo/fisiologia , Diabetes Mellitus Tipo 2/dietoterapia , Diabetes Mellitus Tipo 2/microbiologia , Progressão da Doença , Feminino , Humanos , Doenças Inflamatórias Intestinais/dietoterapia , Doenças Inflamatórias Intestinais/microbiologia , Masculino , Obesidade/dietoterapia , Obesidade/microbiologia
10.
BMC Health Serv Res ; 20(1): 117, 2020 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-32059727

RESUMO

BACKGROUND: The demand for a large Norwegian hospital's post-term pregnancy outpatient clinic has increased substantially over the last 10 years due to changes in the hospital's catchment area and to clinical guidelines. Planning the clinic is further complicated due to the high did not attend rates as a result of women giving birth. The aim of this study is to determine the maximum number of women specified clinic configurations, combination of specified clinic resources, can feasibly serve within clinic opening times. METHODS: A hybrid agent based discrete event simulation model of the clinic was used to evaluate alternative configurations to gain insight into clinic planning and to support decision making. Clinic configurations consisted of six factors: X0: Arrivals. X1: Arrival pattern. X2: Order of midwife and doctor consultations. X3: Number of midwives. X4: Number of doctors. X5: Number of cardiotocography (CTGs) machines. A full factorial experimental design of the six factors generated 608 configurations. RESULTS: Each configuration was evaluated using the following measures: Y1: Arrivals. Y2: Time last woman checks out. Y3: Women's length of stay (LoS). Y4: Clinic overrun time. Y5: Midwife waiting time (WT). Y6: Doctor WT. Y7: CTG connection WT. Optimisation was used to maximise X0 with respect to the 32 combinations of X1-X5. Configuration 0a, the base case Y1 = 7 women and Y3 = 102.97 [0.21] mins. Changing the arrival pattern (X1) and the order of the midwife and doctor consultations (X2) configuration 0d, where X3, X4, X5 = 0a, Y1 = 8 woman and Y3 86.06 [0.10] mins. CONCLUSIONS: The simulation model identified the availability of CTG machines as a bottleneck in the clinic, indicated by the WT for CTG connection effect on LoS. One additional CTG machine improved clinic performance to the same degree as an extra midwife and an extra doctor. The simulation model demonstrated significant reductions to LoS can be achieved without additional resources, by changing the clinic pathway and scheduling of appointments. A more general finding is that a simulation model can be used to identify bottlenecks, and efficient ways of restructuring an outpatient clinic.


Assuntos
Número de Leitos em Hospital , Ambulatório Hospitalar/organização & administração , Planejamento de Assistência ao Paciente/organização & administração , Simulação por Computador , Feminino , Pesquisa sobre Serviços de Saúde , Humanos , Noruega , Gravidez
11.
Clin Nutr ESPEN ; 35: 63-68, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31987122

RESUMO

BACKGROUND & AIMS: Fish-oil, rich in Omega-3 long chain polyunsaturated fatty acids (n-3 LC PUFAs), may in high doses inhibit the development or progression of cancer cachexia. However, poor compliance to oral nutritional supplements is a well-known problem. We aimed to investigate acceptability and compliance to a nutritional drink with fish-oil compared to an equivalent dose of fish-oil administered as capsules in patients receiving chemotherapy for GI tract cancers. Moreover, we aimed to investigate, if there was a difference between a nutritional drink or capsules with respect to nutritional status and side effects. Finally, we aimed to examine, if n-3 LC PUFAs affect leukocyte and platelet counts, and markers of dose-limiting toxicities of chemotherapy. METHODS: We consecutively included 41 patients with advanced cancer in the controlled study. Patients were allocated (not randomized) to ingest either 10 capsules/day for four weeks or 400 mL/day of a nutritional drink with same dose of n-3 LC PUFA dose. Compliance was assessed by daily self-registration and n-3 LC PUFAs in whole blood. Side effects were assessed by 10 cm visual analog scales. RESULTS: Compliance and daily consumption of n-3 LC PUFAs were 96.4% (94.1-99.3) and 4.8 (4.7-4.9) g/day in the capsule group and 80.8 (55.4-93.6) % and 4.0 (2.8-4.7) g/day in the group, respectively (p ≤ 0.02). We found no differences between the groups with respect to changes in whole blood n-3 LC PUFAs, weight, nutritional status, acceptability or side effects. However, in the capsule group the whole blood n-3 LC PUFAs correlated negatively with the increase in nausea (rs = -0.39, p = 0.05), but not in the nutritional drink group. Nausea, reduced appetite and loose stools were of greatest importance for the deviations from recommended doses. The number of capsules had a negative impact on acceptability and compliance, whereas this was mainly related to taste and texture in the nutritional drink group. No changes in median thrombocyte or leukocyte blood counts were observed. CONCLUSIONS: Fish oil in capsules appeared to result in better compliance compared to a nutritional drink with an equivalent dose of n-3 LC PUFAs. However, capsules and the drink did not differ with respect to the effect on nutritional status or side effects. TRIAL REGISTRATION CLINICALTRIALS. GOV IDENTIFIER: NCT03751384.


Assuntos
Caquexia/tratamento farmacológico , Suplementos Nutricionais , Óleos de Peixe/administração & dosagem , Neoplasias/tratamento farmacológico , Cooperação do Paciente , Idoso , Bebidas , Cápsulas/administração & dosagem , Estudos Cross-Over , Ácidos Docosa-Hexaenoicos/administração & dosagem , Ácido Eicosapentaenoico/administração & dosagem , Ácidos Graxos Ômega-3/administração & dosagem , Feminino , Voluntários Saudáveis , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto
12.
ChemCatChem ; 11(3): 1064-1068, 2019 Feb 06.
Artigo em Inglês | MEDLINE | ID: mdl-31423289

RESUMO

Functionalization of aromatic compounds by acylation has considerable significance in synthetic organic chemistry. As an alternative to chemical Friedel-Crafts acylation, the C-acyltransferase from Pseudomonas protegens has been found to catalyze C-C bond formation with non-natural resorcinol substrates. Extending the scope of acyl donors, it is now shown that the enzyme is also able to catalyze C-S bond cleavage prior to C-C bond formation, thus aliphatic and aromatic thioesters can be used as acyl donors. It is worth to mention that this reaction can be performed in aqueous buffer. Identifying ethyl thioacetate as the most suitable acetyl donor, the products were obtained with up to >99 % conversion and up to 88 % isolated yield without using additional base additives; this represents a significant advancement to prior protocols.

13.
Vascul Pharmacol ; 120: 106566, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31207358

RESUMO

Proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9i) reduce cardiovascular events in coronary artery disease (CAD). Their costs exceed that of established oral lipid-lowering agents. Previous cost-effectiveness assessments have been inconsistent. Markov cohort state transitions models for stable CAD patients were calculated using information from 1530 participants of the Ludwigshafen Risk and Cardiovascular Health Study (LURIC) with known causes of deaths. Non-fatal to fatal event rates, drug prices, direct treatment costs, and utility weights were from public sources. At an assumed relative risk reduction of 32.5% and an annual drug price of 8500 Euros, QALYs gained were 1.23 and 1.20, savings were 2390 and 2410 Euros, and ICERs were 112,530 and 108,660 Euros in women and men, respectively. When the annual cost of this medication was set at 1600 Euros, corresponding ICERs were 21,180 and 20,450 Euros. PCSK9i treatment is cost-effective in stable CAD at a threshold of 150,000 Euro and annual costs of 8500 Euros. As the broad use of PCSK9i therapy in CAD would have a disruptive impact on the healthcare budget, treatment should be focused on very high risk patients (≥3 comorbidities, annual risk of 10%); alternatively, and for lower risk, significant cost reductions would be needed.


Assuntos
Anticolesterolemiantes/administração & dosagem , Anticolesterolemiantes/economia , Doença da Artéria Coronariana/tratamento farmacológico , Doença da Artéria Coronariana/economia , Custos de Medicamentos , Hiperlipidemias/tratamento farmacológico , Hiperlipidemias/economia , Inibidores de PCSK9 , Inibidores de Serino Proteinase/administração & dosagem , Inibidores de Serino Proteinase/economia , Idoso , Anticolesterolemiantes/efeitos adversos , Biomarcadores/sangue , Colesterol/sangue , Doença da Artéria Coronariana/sangue , Doença da Artéria Coronariana/epidemiologia , Redução de Custos , Análise Custo-Benefício , Esquema de Medicação , Feminino , Alemanha/epidemiologia , Humanos , Hiperlipidemias/sangue , Hiperlipidemias/epidemiologia , Masculino , Cadeias de Markov , Pessoa de Meia-Idade , Modelos Econômicos , Pró-Proteína Convertase 9/metabolismo , Anos de Vida Ajustados por Qualidade de Vida , Medição de Risco , Fatores de Risco , Inibidores de Serino Proteinase/efeitos adversos , Fatores de Tempo , Resultado do Tratamento
14.
Chembiochem ; 20(1): 88-95, 2019 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-30318713

RESUMO

C-C bond-forming reactions are key transformations for setting up the carbon frameworks of organic compounds. In this context, Friedel-Crafts acylation is commonly used for the synthesis of aryl ketones, which are common motifs in many fine chemicals and natural products. A bacterial multicomponent acyltransferase from Pseudomonas protegens (PpATase) catalyzes such Friedel-Crafts C-acylation of phenolic substrates in aqueous solution, reaching up to >99 % conversion without the need for CoA-activated reagents. We determined X-ray crystal structures of the native and ligand-bound complexes. This multimeric enzyme consists of three subunits: PhlA, PhlB, and PhlC, arranged in a Phl(A2 C2 )2 B4 composition. The structure of a reaction intermediate obtained from crystals soaked with the natural substrate 1-(2,4,6-trihydroxyphenyl)ethanone together with site-directed mutagenesis studies revealed that only residues from the PhlC subunits are involved in the acyl transfer reaction, with Cys88 very likely playing a significant role during catalysis. These structural and mechanistic insights form the basis of further enzyme engineering efforts directed towards enhancing the substrate scope of this enzyme.


Assuntos
Aciltransferases/química , Proteínas de Bactérias/química , Acilação , Aciltransferases/genética , Aciltransferases/metabolismo , Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo , Biocatálise , Cristalografia por Raios X , Mutagênese Sítio-Dirigida , Mutação , Floroglucinol/análogos & derivados , Floroglucinol/química , Floroglucinol/metabolismo , Ligação Proteica , Subunidades Proteicas/química , Subunidades Proteicas/genética , Subunidades Proteicas/metabolismo , Pseudomonas/enzimologia
15.
Atherosclerosis ; 277: 314-322, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30270065

RESUMO

BACKGROUND AND AIMS: Familial hypercholesterolemia (FH) is amongst the most common genetic disorders encountered in primary care. Yet, only a minority of affected patients is diagnosed and treated. This interim analysis of the CaRe High Registry aims at examining the state of treatment and attainment of lipid goals in German FH patients. METHODS: The CaRe High registry includes FH patients from lipid clinics and private practices. Data have been collected using questionnaires filled in by the recruiting physicians and by interviewing the participating patients. RESULTS: We examined 512 F H patients diagnosed according to clinical criteria. Median age at the time of the first FH diagnosis was 39 (25th and 75th percentile: 27-50) years, median treatment naïve LDL cholesterol (LDL-C) was 239.4 mg/dl (6.19 mmol/l), 25th to 75th percentile 191.8-342.5 mg/dl (4.96-8.86 mmol/l). 27% of the participants did not receive lipid-lowering drugs. Among the patients treated with lipid-lowering drugs, 19% received a PCSK9 inhibitor (PCSK9i) in combination with a statin, 9% were treated with a PCSK9i alone and 3% were treated with a combination of PCSK9i and a non-statin drug. Patients with pre-existing CVD were more likely to be treated with lipid-lowering drugs and more likely to receive a PCSK9i, but LDL-C targets were only achieved by a minority of patients (<20%). Gap to target LDL-C was lowest and the median achieved LDL-C reduction was 1.4 times higher with PCSK9i treatment than with (oral) lipid-lowering therapy without PCSK9i. CONCLUSIONS: The Care High registry has included patients with the typical clinical features of familial hypercholesterolemia. PCSK9i treatment in addition to standard therapy allows attainment of target values in many patients with initially very high LDL-C.


Assuntos
Anticolesterolemiantes/uso terapêutico , LDL-Colesterol/sangue , Hiperlipoproteinemia Tipo II/tratamento farmacológico , Adulto , Biomarcadores/sangue , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Regulação para Baixo , Quimioterapia Combinada , Feminino , Predisposição Genética para Doença , Alemanha/epidemiologia , Hereditariedade , Humanos , Hiperlipoproteinemia Tipo II/sangue , Hiperlipoproteinemia Tipo II/epidemiologia , Hiperlipoproteinemia Tipo II/genética , Masculino , Pessoa de Meia-Idade , Inibidores de PCSK9 , Linhagem , Fenótipo , Pró-Proteína Convertase 9/metabolismo , Medição de Risco , Fatores de Risco , Serina Endopeptidases/uso terapêutico , Fatores de Tempo , Resultado do Tratamento
16.
Appl Microbiol Biotechnol ; 102(14): 6057-6068, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29754162

RESUMO

The formation of C-C bonds by using CoA independent acyltransferases may have significant impact for novel methods for biotechnology. We report the identification of Pseudomonas strains with CoA-independent acyltransferase activity as well as the heterologous expression of the enzyme in E. coli. The cloning strategies and selected expression studies are discussed. The recombinant acyltransferases were characterized with regard to thermal and storage stability, pH,- and co-solvent tolerance. Moreover, the impact of bivalent metals, inhibitors, and other additives was tested. Careful selection of expression and working conditions led to obtain recombinant acyltransferase form Pseudomonas protegens with up to 11 U mL-1 activity.


Assuntos
Aciltransferases/genética , Proteínas de Bactérias/genética , Pseudomonas/enzimologia , Sequência de Aminoácidos , Vias Biossintéticas , Clonagem Molecular , Escherichia coli/genética , Escherichia coli/metabolismo , Óperon , Pseudomonas/genética
17.
Chem Commun (Camb) ; 54(27): 3387-3390, 2018 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-29553154

RESUMO

Amide bond formation has considerable significance in synthetic chemistry. Although the C-acyltransferase from Pseudomonas protegens has been found to catalyze C-C bond formation in nature as well as in in vitro experiments with non-natural substrates, it is now shown that the enzyme is also able to catalyze amide formation using aniline derivatives as substrates with promiscuous activity. Importantly, the amide formation was enabled in aqueous buffer. Identifying phenyl acetate as the most suitable acetyl donor, the products were obtained with up to >99% conversion and up to 99% isolated yield.


Assuntos
Acetanilidas/metabolismo , Aciltransferases/metabolismo , Pseudomonas/enzimologia , Acetanilidas/química , Biocatálise , Soluções Tampão , Água/química , Água/metabolismo
18.
Endocr Relat Cancer ; 25(5): 547-560, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29563190

RESUMO

Tropomyosin receptor kinase (Trk) inhibitors are investigated as a novel targeted therapy in various cancers. We investigated the in vitro effects of the pan-Trk inhibitor GNF-5837 in human neuroendocrine tumor (NET) cells. The human neuroendocrine pancreatic BON1, bronchopulmonary NCI-H727 and ileal GOT1 cell lines were treated with GNF-5837 alone and in combination with everolimus. Cell viability decreased in a time- and dose-dependent manner in GOT1 cells in response to GNF-5837 treatment, while treatment in BON1 and NCI-H727 cells showed no effect on cellular viability. Trk receptor expression determined GNF-5837 sensitivity. GNF-5837 caused downregulation of PI3K-Akt-mTOR signaling, Ras-Raf-MEK-ERK signaling, the cell cycle and increased apoptotic cell death. The combinational treatment of GNF-5837 with everolimus showed a significant enhancement in inhibition of cell viability vs single substance treatments, due to a cooperative PI3K-Akt-mTOR and Ras-Raf-MEK-ERK pathway downregulation, as well as an enhanced cell cycle component downregulation. Immunohistochemical staining for Trk receptors were performed using a tissue microarray containing 107 tumor samples of gastroenteropancreatic NETs. Immunohistochemical staining with TrkA receptor and pan-Trk receptor antibodies revealed a positive staining in pancreatic NETs in 24.2% (8/33) and 33.3% (11/33), respectively. We demonstrated that the pan-Trk inhibitor GNF-5837 has promising anti-tumoral properties in human NET cell lines expressing the TrkA receptor. Immunohistochemical or molecular screening for Trk expression particularly in pancreatic NETs might serve as predictive marker for molecular targeted therapy with Trk inhibitors.


Assuntos
Tumores Neuroendócrinos/tratamento farmacológico , Inibidores de Proteínas Quinases/uso terapêutico , Receptor trkA/antagonistas & inibidores , Humanos , Tumores Neuroendócrinos/patologia , Inibidores de Proteínas Quinases/farmacologia
19.
Atheroscler Suppl ; 30: 72-76, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29096864

RESUMO

INTRODUCTION: Familial hypercholesterolemia (FH) is an inherited disorder of the LDL metabolism, leading to cardiovascular disease, even at young age. This risk can be significantly lowered by early diagnosis and treatment. About 270,000 patients affected in Germany are not diagnosed correctly and only a small number is treated properly. To improve FH diagnosis in the general population a cascade screening and registry data is warranted, yet missing in Germany. This project aims to fill this gap. METHODS: Study assistants approach physicians and lipid clinics to introduce the cascade screening and registry. The physicians identify potential FH patients and include them in the study. Patient data is acquired via questionnaires about medical history. Patients meeting at least two inclusion criteria (LDL-C >190 mg/dl or total cholesterol >290 mg/dl; tendon xanthomas; family history of hypercholesterolemia or early myocardial infarction) are included in the registry. Family members will be contacted and physicians get feedback about diagnosis and treatment options. Ethical approvals for all German states have been collected. RESULTS: So far physicians, lipid clinics and patients within the Rhein-Neckar region, the Saarland, North-Rhine-Westphalia, Upper Bavaria, Bremen, Saxonia and Berlin have joined the study. We expect to include more than 3000 patients during the next two years. CONCLUSION: After initial patient and data collection the project aims to improve FH-diagnosis and treatment. Utilizing registry data might advance diagnostic criteria and improve detection of FH and thus prevent CVD in this population.


Assuntos
LDL-Colesterol/sangue , Testes Genéticos/métodos , Hiperlipoproteinemia Tipo II/diagnóstico , Metabolismo dos Lipídeos/genética , Mutação , Sistema de Registros , Biomarcadores/sangue , Marcadores Genéticos , Predisposição Genética para Doença , Alemanha , Humanos , Hiperlipoproteinemia Tipo II/sangue , Hiperlipoproteinemia Tipo II/genética , Hiperlipoproteinemia Tipo II/terapia , Seleção de Pacientes , Fenótipo , Valor Preditivo dos Testes , Prognóstico , Avaliação de Programas e Projetos de Saúde , Fatores de Risco
20.
Atherosclerosis ; 266: 24-30, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28946037

RESUMO

BACKGROUND AND AIMS: Familial hypercholesterolemia (FH) is an inherited disorder of lipoprotein metabolism characterised by impaired removal of low-density lipoproteins (LDL) from the circulation, which leads to an increased risk of cardiovascular disease (CVD). This risk can be significantly lowered by early diagnosis and treatment. In Germany, reliable estimates of the prevalence of FH are lacking. We therefore examined the prevalence rate of FH in Germany in a primary care based cohort. METHOD: We utilized records of 4722 participants in the DETECT study, in whom complete data on blood lipids and medical history were available. Prevalence rates were assessed using the Dutch Lipid Clinics Network (DLCN) and the US-MEDPED criteria. We stratified for gender and age. Group differences were analyzed using Chi2 and ANOVA tests. RESULTS: Using the DLCN (probable or definite FH) and the US.MEDPED criteria yielded prevalence rates of 1:278 and 1:295, respectively. The established diagnostic scores used in this analysis identify different patients. In women below 50 years of age, the LDL-C concentration is lower than in men, leading to the possibility of under-diagnosing FH in this group because women under the age of 50 are less likely to reach a higher DLCN-Score. CONCLUSIONS: FH has a higher than expected prevalence in Germany. Clinical diagnostic algorithms may not be concordant.


Assuntos
Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus/epidemiologia , Hiperlipoproteinemia Tipo II/epidemiologia , Atenção Primária à Saúde , Adulto , Análise de Variância , Biomarcadores/sangue , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/prevenção & controle , Distribuição de Qui-Quadrado , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/prevenção & controle , Feminino , Alemanha/epidemiologia , Humanos , Hiperlipoproteinemia Tipo II/sangue , Hiperlipoproteinemia Tipo II/diagnóstico , Hiperlipoproteinemia Tipo II/terapia , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , Prognóstico , Reprodutibilidade dos Testes , Medição de Risco , Fatores de Risco
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