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Spelier S, de Poel E, Beekman J. WS16.06 Development of a high throughput functional screen allows drug repurposing and reveals novel drug candidates for recusing CFTR function in patient-derived organoids with nonsense mutations. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00248-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Aalbers B, Amatngalim G, Aarts E, Rodenburg L, Oosterhoff L, Heijerman H, Beekman J. P017 Using chamber measurement of CFTR modulator effects in airway epithelial cells and its correlation to clinical effects of treatment. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00350-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ramalho A, Silva I, Suen S, Bierlaagh M, Vonk A, Pott J, Boj S, Crawford D, Goddeeris M, Vermeulen F, Amaral M, de Boeck K, Beekman J, van der Ent C. 660: Screening of ELX-02 readthrough effect by forskolin-induced swelling assay in CFTR nonsense mutation–bearing organoids as predictive test for clinical trial patient stratification. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02083-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Muilwijk D, de Poel E, van Mourik P, Suen S, Vonk A, Brunsveld J, Kruisselbrink E, Oppelaar H, Hagemeijer M, Berkers G, de Winter-de Groot K, Michel S, Jans S, van Panhuis H, van der Eerden M, van der Meer R, Roukema J, Dompeling E, Weersink E, Koppelman G, Vries R, Zomer-van Ommen D, Eijkemans R, van der Ent C, Beekman J. 665: Forskolin-induced intestinal organoid swelling predicts long-term cystic fibrosis disease progression. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02088-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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van Mourik P, Bierlaagh M, Vonk A, Ramalho AS, Silva I, Beekman J, van der Ent C, Gilmartin G. WS11.2 Initial evaluation of the ex vivo response to the CFTR potentiator dirocaftor, corrector posenacaftor and amplifier nesolicaftor in organoids derived from cystic fibrosis subjects with ultra-rare mutations. J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30223-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mullenders J, Statia M, Van Mourik P, Vonk A, Aguilera B, Van der Meer R, Heijerman H, Janssens H, Clevers H, Beekman J, Van der Ent K, Vries R, Boj S. WS04-5 The TOPAZ study, a large-scale study in organoids derived from F508del homozygous cystic fibrosis patients treated with Orkambi. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30140-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Carlon M, Vidovic D, Dekkers J, da Cunha MF, Hollenhorst M, Bijvelds M, Van den Haute C, Baekelandt V, de Jonge H, De Boeck K, Gijsbers R, Sermet-Gaudelus I, Edelman A, Beekman J, Debyser Z. WS01.1 rAAV2/5 encoding a truncated CFTR rescues the CF phenotype in intestinal organoids and a CF mouse model. J Cyst Fibros 2015. [DOI: 10.1016/s1569-1993(15)30001-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vos M, Varkevisser R, Baburin I, Schramm A, van der Heyden M, Houtman M, Jonsson M, Takanari H, Beekman J, Hamburger M, Hering S. DEHYDROEVODIAMINE, ISOLATED FROM THE DRIED UNRIPE FRUIT OF EVODIA RUTAECARPA PRESENT IN THE TRADITIONAL CHINESE MEDICINE WU CHU YU, HAS PROARRHYTHMIC EFFECTS IN VITRO AND IN VIVO THAT DISAPPEAR AT HIGHER CONCENTRATIONS. Heart Rhythm 2014. [DOI: 10.1016/j.hrthm.2014.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Trentani A, Kuipers SD, te Meerman GJ, Beekman J, ter Horst GJ, den Boer JA. Immunohistochemical changes induced by repeated footshock stress: revelations of gender-based differences. Neurobiol Dis 2003; 14:602-18. [PMID: 14678775 DOI: 10.1016/j.nbd.2003.08.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
As a growing literature has proven, adverse experiences, particularly when severe and persistent, play a pivotal role in the development of neuronal dysfunctions and psychopathology. In the present study, the neurochemical changes induced by acute and repeated footshock exposure were investigated at the molecular and cellular level, using c-fos and phospho-ERK1/2 immunoreactivity and gene expression arrays. Marked gender-related differences were found following both acute and prolonged footshock exposure. Acute aversive conditioning resulted in significant immunohistochemical changes that might be critically involved in the modulation of fear-related responses, especially in males. Prolonged footshock exposure, on the contrary, was associated with sustained hypothalamic-pituitary-adrenal axis hyperactivity, differential gender-related patterns of cortical-limbic activity, and abnormal neuronal plasticity, especially in medial prefrontocortical regions. These data may provide additional insights into the understanding of the neural circuits underlying the effects of acute and repeated footshock exposure as well as clarify some of the mechanisms involved in the development of stress-related neuronal abnormalities.
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Affiliation(s)
- A Trentani
- Department of Psychiatry, Division of Biological Psychiatry, Academic Hospital Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands
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Abstract
The goal of this study was to develop a DNA micro array procedure for molecular human leukocyte antigen (HLA) typing of a large number of samples. DNA was isolated from peripheral blood samples and polymerase chain reaction (PCR) amplified for HLA-A, -B, and -DRB. Amplified DNA samples were spotted on silane-treated glass slides using a micro array spotter. The spotter was capable of spotting multiple slides with up to 9216 samples per slide or 2304 samples in quadruplicate. The allele specific oligo nucleotide probes for HLA-A, -B, and -DRB were labeled with the fluorescent dye Cy3, while a control probe, to quantitate the total amount of PCR product in a sample, was labeled with Cy5. Each slide was hybridized with a mixture of an allele specific Cy3 probe plus the control Cy5 probe. Following hybridization and wash, the amount of probe hybridizing to each DNA sample on the slide was measured with a micro array scanner. A computer program was used for image analysis, to calculate the average Cy3/Cy5 ratios and to identify the positive and negative samples. In turn, this information was used to determine the HLA phenotype of each sample. There was very good concordance between the results obtained for all three loci using Cy-labeled probes as compared with those previously obtained by chemiluminescent detection of alkaline phosphatase labeled probes. This methodology has the potential of greatly simplifying HLA molecular typing of large number of samples.
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Affiliation(s)
- I Balazs
- Lifecodes Corporation, Stamford, CT, USA
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Galbraith DN, Kelly HT, Dyke A, Reid G, Haworth C, Beekman J, Shepherd A, Smith KT. Design and validation of immunological tests for the detection of Porcine endogenous retrovirus in biological materials. J Virol Methods 2000; 90:115-24. [PMID: 11064112 DOI: 10.1016/s0166-0934(00)00200-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The present study details the design and demonstrates function for a series of reagents and methods to allow the detection of exposure to antigens specific for Porcine endogenous retrovirus (PERV). The detection of PERV is carried out by the means of a variety of immunological screening methods including, indirect immunofluorescence, Western blotting and enzyme linked immunosorbent assay (ELISA) for the detection of antibodies in serum specific for PERV gag and env antigens. Alternatively, PERV-specific antisera for gag and env can be used to detect viral antigen in serum or other samples. PERV env peptides with potential specificity for the known PERV types are also described. Antisera against the peptides can be used to detect PERV antigens directly or to characterise viral type. Using electron microscopy coupled with labelled PERV-gag-specific antisera it was possible to visualise PERV virions.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Viral/analysis
- Antibodies, Viral/blood
- Antigens, Viral/analysis
- Antigens, Viral/genetics
- Antigens, Viral/immunology
- Blotting, Western
- Cell Line
- Endogenous Retroviruses/genetics
- Endogenous Retroviruses/isolation & purification
- Enzyme-Linked Immunosorbent Assay
- Fluorescent Antibody Technique, Indirect
- Gene Products, env/chemistry
- Gene Products, gag/chemistry
- Humans
- Immune Sera/biosynthesis
- Immunologic Tests/methods
- Microscopy, Immunoelectron
- Molecular Sequence Data
- Sequence Alignment
- Serologic Tests
- Swine
- Viral Proteins/analysis
- Viral Proteins/genetics
- Viral Proteins/immunology
- Virology/methods
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Affiliation(s)
- D N Galbraith
- Q-One Biotech Ltd, West of Scotland Science Park, G20 0XA, Glasgow, UK
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Diemont WL, Stegeman CJ, Beekman J, Siegers AM, Hagels G, de Bruijn JH. Low-dose isradipine once daily effectively controls 24-h blood pressure in essential hypertension. Am J Hypertens 1991; 4:163S-167S. [PMID: 1827011 DOI: 10.1093/ajh/4.2.163s] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In one study of 10 patients with mild-to-moderate hypertension, equivalent total daily doses (13 +/- 2 mg) of isradipine given twice daily and a modified-release formulation of isradipine (isradipine MR) given once daily were found to control adequately 24 h ambulatory blood pressure compared with placebo (P less than .001 for each v placebo). In another study of 22 patients with essential hypertension, 5 and 10 mg isradipine MR once daily has been shown to reduce the average 24 h blood pressure by 11 +/- 1/6 +/- 1 mm Hg (P less than .001) and 13 +/- 2/9 +/- 1 mm Hg (P less than .001), respectively, compared with placebo. There was no loss of efficacy with isradipine MR during the 24 h observation period with either dose. In conclusion, low-dose isradipine MR once daily is an effective first-line treatment in essential hypertension.
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Affiliation(s)
- W L Diemont
- Department of Internal Medicine, Medisch Spectrum Twente, Enschede, The Netherlands
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Dubois JA, Roberts G, Beekman J. The effect of specimen collection additives and sample storage on the Dupont ACA glucose method. Clin Biochem 1982; 15:120-1. [PMID: 6807570 DOI: 10.1016/s0009-9120(82)96520-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Two studies are described in this paper for the purpose of extending the application of the Dupont ACA glucose method to (1) analysis of specimens containing sodium fluoride and sodium iodoacetate, and (2) analysis of specimens containing EDTA, provided analysis is conducted immediately following specimen collection and sample processing.
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