De Pintelaan

Gent, Belgium

De Pintelaan

Gent, Belgium
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Bhandari S.,University of Connecticut | Melchiorre C.,University of Connecticut | Dostie K.,University of Connecticut | Laukens D.,De Pintelaan | And 4 more authors.
Current Protocols in Toxicology | Year: 2017

Metallothioneins (MTs) are small molecular weight stress response proteins that play a central role as reservoir of essential divalent heavy metal cations such as zinc and copper, and also can diminish the effects of toxic heavy metals such as mercury and cadmium. Historically, MT has been considered to be an intracellular protein with roles to play in the management of heavy metals, as a regulator of cellular redox potential, and as a buffer of free radicals. Our recent studies have highlighted immunomodulatory role of MT in inflammatory diseases and also in the progression of metastatic cell movement. Hence, manipulation and detection of MT is essential for its possible use as a diagnostic and in therapeutic interventions of chronic inflammation. This review describes procedures used to detect MT using techniques such as western immunoblot, competition ELISA, flow cytometry and immunohistochemistry. Additionally, it also describes the use of a colorimetric cell proliferation assay (CellTiter 96 AQueous One Solution/MTS) to study the proliferative effect of MT. © 2017 John Wiley & Sons, Inc.

van Aelst L.N.L.,Catholic University of Leuven | van Aelst L.N.L.,French Institute of Health and Medical Research | Mazure D.,De Pintelaan | Cohen-Solal A.,Hopital Lariboisiere | And 2 more authors.
Current Heart Failure Reports | Year: 2017

Purpose of Review: Heart failure (HF) is a common, costly, disabling, and deadly clinical syndrome and often associated with one or several co-morbidities complicating its treatment or worsening its symptoms. During the last decade, iron deficiency (ID) got recognized as a frequent, debilitating yet easily treatable co-morbidity in HF. In this review, we focus on new evidence that emerged during the last 5 years and discuss the epidemiology, the causes, and the clinical consequences of ID in HF. Recent Findings: Apart from replenishing iron stores, intravenous iron improves patients’ symptoms, perceived quality of life (QoL), exercise capacity, and hospitalization rates. These beneficial effects cannot be attributed to oral iron, as increased hepcidin levels, typical in inflammatory states such as HF, preclude resorption of iron from the gut. Summary: Intravenous iron is the only valid treatment option for ID in HF. However, there are several burning research questions and gaps in evidence remaining in this research field. © 2017 Springer Science+Business Media, LLC

Lierman S.,Ghent University | Tilleman K.,Ghent University | Braeckmans K.,Ghent University | Peynshaert K.,Ghent University | And 3 more authors.
Journal of Assisted Reproduction and Genetics | Year: 2017

Purposes: At the moment of sex reassignment surgery (SRS), the ovarian tissue is sometimes cryopreserved as fertility preservation option for female-to-male trans men, also called trans men. During this preparation, cumulus-oocyte-complexes (COCs) can be found and in vitro matured. It is not known if these oocytes are developmentally competent. In order to use these oocytes for fertility preservation and subsequent fertilization, a normal spindle structure before and after vitrification is necessary. Methods: A total of 680 COCs were collected from trans men (n = 16) at the time of SRS and after testosterone treatment. The COCs were subjected to in vitro maturation and those that reached the metaphase II stage (MII) were collected and split into two groups; group 1 was immediately fixed for spindle staining and group 2 was first vitrified and warmed followed by spindle staining. Statistical analysis was performed by Fisher’s exact test. Results: After 48 h in vitro maturation, 38.1% of COCs were at MII stage. Those oocytes were split in two groups: (1) 126 MII oocytes in the noncryopreservation group and (2) 133 MII oocytes underwent cryopreservation through vitrification. The oocyte survival rate, after 2 h warming, was 67.7%. Both the noncryopreserved and the vitrified group showed comparable results concerning normal spindle structure and chromosomes alignment, 85.7% vs. 92.2% (P = 0.27). Conclusions: Spindle structure analysis and chromosomal alignment after vitrification seem normal in in vitro matured COCs collected during the tissue processing of ovaries in trans men at the time of SRS. The MII oocytes do not seem to be morphologically affected by prolonged testosterone treatment. © 2017 Springer Science+Business Media, LLC

Decaluwe K.,De Pintelaan | Pauwels B.,De Pintelaan | Boydens C.,De Pintelaan | Van De Voorde J.,De Pintelaan
Pharmacology Biochemistry and Behavior | Year: 2014

In recent years, research on penile erection has increasingly been centered on the molecular mechanisms involved. Major progress has been made in the field and at present a whole number of neurotransmitters, chemical effectors, growth factors, second-messenger molecules, ions, intercellular proteins, and hormones have been characterized as components of the complex process of erection. This knowledge has led to the discovery of several new therapeutic targets and multiple medical approaches for the treatment of erectile dysfunction (ED). This review focuses on the progress made in this field within the last few years. © 2013 Elsevier Inc.

PubMed | De Pintelaan
Type: Journal Article | Journal: Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc | Year: 2011

A turbidimetric method to determine serum C-reactive protein (CRP) concentration, based on soybean oil-phosphocholine interaction, was performed on horse serum samples to evaluate its potential diagnostic value in veterinary medicine. Intralipid 20% in 0.1 M Tris-calcium buffer (pH 7.5) was added to horse serum. After 30 min of incubation at 37 C, the CRP-phosphocholine complexes were turbidimetrically, bichromatically (660 nm/700 nm) quantified on a commercial analyzer. Furthermore, comparison between CRP and other inflammatory markers, including white blood cell and neutrophil counts, was performed to evaluate the diagnostic value of both tests. Standardization of the assay was done using a commercial human CRP calibrator. The CRP measurements were performed on serum samples (296 patients and 34 controls). Reference values were found to be lower than 10 mg/l. The method was found to be linear between 1 and 400 mg/l. A moderate correlation was observed between CRP values and the relative neutrophil counts. Receiver-operating characteristics analysis demonstrated the area under the curve for CRP was 0.928, which was superior (P < 0.001) to the neutrophil count (0.804) and the leukocyte count (0.664) in detecting the presence of inflammation. This CRP assay showed reliable results as an acute phase test in horses, confirming its species-independent capability to detect CRP in various mammals, including horses.

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