Effects of 60 Hz AC magnetic fields on gene expression following exposure over multiple cell generations using Saccharomyces cerevisiae

Binninger, David; Ungvichian, V.

doi:10.1016/s0302-4598(96)05180-x

Cited by 23 publications

(22 citation statements)

References 25 publications

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“…Montenegro (1999) found that cultures exposed to 220mT SMF produced 72% more CO 2 than the unexposed cultures, without a corresponding increase in the glucose consumption. Low intensity (1mT) alternated magnetic fields (AMF) with 60Hz frequency did not induce S.cerevisiae mutation, gene conversion or crossingover (Ager and Radul, 1992), however the levels of the stationary states of specific mRNAs of the yeast cells was altered after AMF of 60Hz and 20µT intensity exposure during 15 cellular generations (Binninger and Ungvichian, 1996).…”

Section: Introductionmentioning

confidence: 99%

Influence of static magnetic fields on S. cerevisae biomass growth

Muniz

Marcelino

Schuler

et al. 2007

Braz. arch. biol. technol.

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Biomass growth of Saccharomyces cerevisiae DAUFPE-1012 was studied in eight batch fermentations exposed to steady magnetic fields (SMF) running at 23ºC (± 1ºC), for 24 h in a double cylindrical tube reactor with synchronic agitation. For every batch, one tube was exposed to 220mT flow intensity SMF, produced by NdFeB rod magnets attached diametrically opposed (N to S) magnets on one tube. In the other tube, without magnets, the fermentation occurred in the same conditions. The biomass growth in culture (yeast extract + glucose 2%) was monitored byspectrometry to obtain the absorbance and later, the corresponding cell dry weight. The culture glucose concentration was monitored every two hours so as the pH, which was maintained between 4 and 5. As a result, the biomass (g/L) increment was 2.5 times greater in magnetized cultures (n=8) as compared with SMF non-exposed cultures (n=8). The differential (SMF-control) biomass growth rate (135%) was slightly higher than the glucose consumption rate (130 %) leading to increased biomass production of the magnetized cells

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Section: Introductionmentioning

confidence: 99%

Influence of static magnetic fields on S. cerevisae biomass growth

Muniz

Marcelino

Schuler

et al. 2007

Braz. arch. biol. technol.

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“…In contrast, Novák et al [2007] reported that a 50 Hz MF with an induction of 10 mT decreased the number of viable yeast cells and reduced their growth rate. In addition, Binninger and Ungvichian [1997] found that yeast gene expression is altered in response to continuous exposure to a 20 mT, 60 Hz MF over a period of approximately 15 cell generations. It was speculated that this effect was induced by a change in the steady-state abundance of specific messenger RNAs.…”

Section: Introductionmentioning

confidence: 99%

Effect of static magnetic fields on the budding of yeast cells

Egami

Naruse

Watarai

2010

Bioelectromagnetics

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The effect of static magnetic fields on the budding of single yeast cells was investigated using a magnetic circuit that was capable of generating a strong magnetic field (2.93 T) and gradient (6100 T² m⁻¹). Saccharomyces cerevisiae yeast cells were grown in an aqueous YPD agar in a silica capillary under either a homogeneous or inhomogeneous static magnetic field. Although the size of budding yeast cells was only slightly affected by the magnetic fields after 4 h, the budding angle was clearly affected by the direction of the homogeneous and inhomogeneous magnetic fields. In the homogeneous magnetic field, the budding direction of daughter yeast cells was mainly oriented in the direction of magnetic field B. However, when subjected to the inhomogeneous magnetic field, the daughter yeast cells tended to bud along the axis of capillary flow in regions where the magnetic gradient, estimated by B(dB/dx), were high. Based on the present experimental results, the possible mechanism for the magnetic effect on the budding direction of daughter yeast cells is theoretically discussed.

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“…According to A. Markov et al's paper [16] it is important to study exposed organism not only on the cellular or tissue level but also the complex effects on the whole organism. From that reason bacteria [17][18][19], or yeast [20][21][22][23] -unicellular organisms -can be good subjects for the study of magnetic fields effects. In our previous works we studied the MF effects on bacteria.…”

Section: Introductionmentioning

confidence: 99%