Roeland van Wijk

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BACKGROUND In the past years, research on ultraweak photon emission (UPE) from human body has increased for isolated cells and tissues. However, there are only limited data on UPE from the whole body, in particular from the hands. OBJECTIVE To describe a protocol for the management of subjects that (1) avoids interference with light-induced longterm(More)
BACKGROUND Biophoton emission is the spontaneous emission of ultraweak light emanating from all living systems, including man. The emission is linked to the endogenous production of excited states within the living system. The detection and characterisation of human biophoton emission has led to suggestions that it has potential future applications in(More)
Ultra-weak photon emission in the visible range was measured on palm and dorsal side of left and right hand by means of a low noise photomultiplier system. To study the dynamics of this photon emission in a 24 h period photon emission was recorded in 2 h intervals in 5 experiments, utilizing strict protocols for dark adaptation and recording of subjects.(More)
In the process of wound healing keratinocytes and fibroblasts play an important role, keratinocytes in the re-epithelization process and fibroblasts in the process of wound contraction. We have studied the role of human keratinocytes and fibroblasts in the rearrangement of collagen in a collagen lattice model system. Our results revealed that keratinocytes(More)
A floating collagen matrix culture of neonatal rat heart myocardial cells shows rhythmic contractions which are dependent on localization of cells, cell density, and collagen concentration. The rhythmic contractions of the collagen matrix can be registered by a device scanning the optical density at the edge of the gel and have been observed over a(More)
We have investigated spontaneous and light-induced photon emission of suspensions of rat hepatocytes and of HTC hepatoma cells. Rat hepatocytes exhibit spontaneous biophoton emission, but from hepatoma cells this was not detectable. In contrast, after irradiation with white light, the reemission intensity was found to be lower for hepatocytes than for the(More)
During the past 20 years, the connective tissue has been recognized as an integral component of the Chinese acupuncture meridian system. This has offered an interesting correspondence between the classical Chinese theory and a 200 year-old European theory on connective tissue as basic bioregulatory system. We review supporting evidence from biochemistry,(More)
Our data show that a short incubation with arsenite (30–300 μM) induces a biphasic change in ceSlular sensitivity towards a second exposure to arsenite. A transient sensitization was followed by the development of self-tolerance. Sensitization was measured using the step-down protocol; i.e., application of a high dose of arsenite pretreatment (100 or 300(More)
Exposure of HTC cells to sodium butyrate caused inhibition of growth. The site of growth inhibition was studied by time-lapse cinematography and [3H]thymidine incorporation studies. Evidence is presented that sodiunm butyrate affected the cell cycle at a specific point immediately after mitosis. Inasmuch as it does not modify the interphase duration after(More)
s from the YUPER Meeting in Paris: The properties of UPE Marek Rác, Ankush Prasad, Anshu Rastogi, Pavel Pospíšil Despite the fact that the phenomenon of UPE is known for almost a century, the mechanisms behind the emission are still not fully understood. Measurements on U937 cells, clamydomonas and chemical systems prove the emission from both lipids and(More)