DNA & Genetic Damage

SANGUINE SYSTEM BIOLOGICAL/ECOLOGICAL RESEARCH PROGRAM SUMMARY STATUS REPORT

Department of the Navy Electronic Systems Command · 1973

Effect of extremely low frequency electromagnetic radiation on chromosomes. Fourth quarterly report

Miller, Morton W. · 1973

Environmental influences capable of modifying the genotype

Loeffler L · 1973

Lethal Effects of Radiofrequency Energy on Eggs of Tenebrio molitor (Coleoptera: Tenebrionidae)

P. S. Rai, H. J. Ball, S. O. Nelson, L. E. Stetson · 1972

Researchers exposed Tenebrio molitor eggs to 39-MHz radiofrequency electric fields at electrode voltages of 2 to 4 kilovolts for 2 to 64 seconds. Percent hatch of 1- and 3-day-old eggs decreased as RF energy level increased, and 1-day-old eggs were more susceptible than 3-day-old eggs. No larvae survived from 1-day-old eggs treated at 4 kilovolts for 32 and 64 seconds, while 3-day-old eggs treated similarly showed low but higher larval survival.

An examination of regenerating hepatic tissue subjected to radio-frequency irradiation

Byron D. McLees, E. D. Finch, M. L. Albright · 1972

Mutations in oenothera hookeri after treatment of the pollen with radiowaves

Harte, C · 1972

MILLS: MICROWAVE RADIATION

Mills · 1971

AN EXAMINATION OF REGENERATING HEPATIC TISSUE FOLLOWING IN VIVO EXPOSURE TO R.F. RADIATION

Byron D. McLees, Edward D. Finch, Marion L. Albright · 1971

Control of Cell Division by the Electrical Voltage of the Surface Membrane

Clarence D. Cone, Jr. · 1970

Chromosome breakage in cultured Chinese hamster cells induced by radio-frequency treatment

George Mickey · 1970

THE EPIDEMIOLOGICAL STUDY OF MONGOLISM IN BALTIMORE

Bernice H. Cohen, Abraham M. Lilienfeld · 1970

Mothers of children with mongolism reported significantly less often having no radiation exposure (50% vs 59.9%) than control mothers. The estimated relative risk for maternal radiation exposure was 1.5, corresponding to an attributable risk of 17%. Fathers of mongol children more often reported radar exposure (8.75%) than control fathers (3.3%), a difference of borderline significance.

Effects of 2450MHz microwaves on protein synthesis and on chromosomes in Chinese hamsters

D. E. JANES et al. · 1969

CELLULAR EFFECTS OF MICROWAVE RADIATION

John H. Heller · 1969

Absorption of Microwaves by Microorganisms

S. J. Webb, A. D. Booth · 1969

Researchers prepared cells and their fractions and measured microwave absorption at various frequencies. DNA showed higher microwave absorption than RNA. The study found that microwave absorption by cells affects biological processes.

Effect of Microwaves at X-Band on Guinea-pig Skin in Tissue Culture - 2. Effect of the Radiation on Skin Biochemistry

SHIRLEY A. CARNEY, J. C. LAWRENCE, C. R. RICKETTS · 1968

Researchers exposed small pieces of guinea-pig skin to a uniform field of X-band microwaves at 8,730 MHz. Measurements showed that 26% of the incident energy was reflected, 34.4 was absorbed, and the remaining 40% was transmitted. Exposure caused a graded reduction in phosphate uptake into phospholipid, nucleic acid, and phosphoprotein fractions, a graded reduction in sulphate uptake with increasing energy density, and a significant reduction in proline uptake into collagen at the three highest power densities.

Studies on the Effect of Radio-Frequency Waves on Biological Macromolecules

Shiro Takashima · 1966

Researchers irradiated alcohol dehydrogenase at 200 volts peak-to-peak across frequencies from 1 to 60 Mc/s. Enzyme activity was measured by the rate of DPN reduction, while DNA structure was assessed by optical density at 260 mu and viscosity. Optical density and viscosity of irradiated DNA showed no significant difference from control samples. The ratio of the first-order rate constant for irradiated versus control alcohol dehydrogenase was nearly unity, indicating no change in activity.

RADIATION-EXPOSURE IN PARENTS OF CHILDREN WITH MONGOLISM (DOWN'S SYNDROME)

Arnold T. Sigler et al. · 1965

EFFECTS OF MICROWAVE RADIATION ON CHINESE HAMSTERS

D. E. Janes et al. · 1965

MICROWAVE MODIFICATION OF X-RAY LETHALITY IN MICE

R.A.E. Thomson, S.M. Michaelson, J.W. Howland · 1963

Crossing-over in Males of Drosophila Induced by Radio Frequency Treatment

G. H. Mickey · 1963

Radiation hazards of primary concern to public health--present status and outlook

Morgan RH · 1963

The Influence of Microwaves on Ionizing Radiation Exposure

S. M. Michaelson et al. · 1963

A New Physical Method of creating Chromosomal Aberrations

John H. Heller, A. A. Teixeira-Pinto · 1959

Researchers used a pulsed radio-frequency source at 27 Mc./s. with pulses of 5 X 10-5 sec. and 80 to 180 pulses per second. Garlic root tips were exposed for 5 minutes between insulated electrodes with no temperature rise in the water. Observed chromosomal aberrations included linear shortening of chromosomes, pseudochiasmiata, amitotic division, bridging, and irregularities in the chromosomal envelope.

Some Possible Biological Effects of an Electric Field Acting on Nucleic Acids or Proteins

Terrell L. Hill · 1957

The paper theorized that an electric field can alter or reverse the relative stability of different macromolecular configurations. It stated that the field will shift the equilibrium between molecular configurations. The analysis identified three possible consequences: separation of DNA double helix chains, partial or complete protein denaturation, and changes in protein chain elasticity between long and short states. The author noted these processes might occur in artificial conditions or be relevant in natural biological membranes due to changes in membrane potential or charge distribution.

RADIATION DAMAGE TO THE GENETIC MATERIAL

H. J. MULLER · 1950