Permanent Waving Does not Change Mercury Concentration in the Proximal Segment of Hair Close to Scalp

Ohba, Takashi; Kurokawa, Naoyuki; Nakai, Kunihiko; Shimada, Miyuki; Suzuki, Keita; Sugawara, Norio; Kameo, Satomi; Satoh, Chieko; Satoh, Hiroshi
January 2008
Tohoku Journal of Experimental Medicine;Jan2008, Vol. 214 Issue 1, p69
Academic Journal
Mercury in hair is a generally accepted biomarker of methylmercury exposure, and permanent waving has been reported to affect the mercury concentration in hair. We conducted an experimental-field study to examine the changes in the mercury concentration in hair induced by treatments such as permanent waving, straightening and coloring. Hair samples were collected from 19 female subjects enrolled before and after hair treatment by a beautician during each visit to a beauty saloon. A total of 38 pair samples were cut in 1-cm segments from the proximal end up to 10 cm, and then as 2-cm segments up to the distal end thereafter. Each segment was analyzed for total mercury concentration by cold-vapor atomic absorption spectrometry. Permanent waving decreased mercury concentration for most of the segments except for the proximal two segments and the 8-9 cm segment from the proximal end. Nevertheless the average mercury concentration of 3-cm segments from the proximal end showed no signifi cant decrease by permanent waving. Since females usually have hair longer than 3 cm, hair samples subjected to permanent waving may give lower mercury exposure estimates when the full-length hair strands are analyzed. However, analyzing the proximal 3-cm segment of hair samples does not give lower mercury exposure estimates. Assuming that hair samples are collected from puerperal women around the time of delivery, the 3-cm segments represent fetal exposure to methylmercury during the third trimester when fetuses are most vulnerable to methylmercury exposure. Therefore, mercury concentrations in the proximal segment of maternal hair collected in the right time can be a good biomarker of fetal methylmercury exposure.


Related Articles

  • Quantitative Evaluation of Urinary Porphyrins as a Measure of Kidney Mercury Content and Mercury Body Burden during Prolonged Methylmercury Exposure in Rats. Pingree, Stephanie D.; Simmonds, P. Lynne; Rummel, Kevin T.; Woods, James S. // Toxicological Sciences;Jun2001, Vol. 61 Issue 2, p234 

    Changes in urinary porphyrin excretion patterns (porphyrin profiles) during prolonged mercury exposure are attributable to mercury accumulation in the kidney and to consequent effects of Hg2+ on renal porphyrin metabolism. In the present study, we evaluated the quantitative relationship of...

  • Inter-individual variations of human mercury exposure biomarkers: a cross-sectional assessment. Berglund, Marika; Lind, Birger; Björnberg, Karolin Ask; Palm, Brita; Einarsson, Östen; Vahter, Marie // Environmental Health: A Global Access Science Source;2005, Vol. 4, p20 

    Background: Biomarkers for mercury (Hg) exposure have frequently been used to assess exposure and risk in various groups of the general population. We have evaluated the most frequently used biomarkers and the physiology on which they are based, to explore the interindividual variations and...

  • Human hair mercury levels in the Wanshan mercury mining area, Guizhou Province, China. Ping Li; Xinbin Feng; Guangle Qiu; Lihai Shang; Guanghui Li // Environmental Geochemistry & Health;Dec2009, Vol. 31 Issue 6, p683 

    The total mercury (T-Hg) and methyl mercury (Me-Hg) concentrations in the hair were measured to evaluate mercury (Hg) exposure for the residents in Da-shui-xi Village (DSX) and Xia-chang-xi Village (XCX) in the Wanshan Hg mining area, Guizhou Province, Southwestern China. The mean concentrations...

  • Relationships between organic matter composition and methyl mercury content of offshore and carbon-rich littoral sediments in an oligotrophic lake. Kainz, Martin; Lucotte, Marc; Parrish, Christopher C // Canadian Journal of Fisheries & Aquatic Sciences;Jul2003, Vol. 60 Issue 7, p888 

    Relationships between organic matter (OM) compounds and methyl mercury concentrations ([MeHg]) have been examined in littoral and offshore sediments of Lake Lusignan (Québec). The highest [MeHg] were generally found at the sediment–water interface with exceptionally high concentrations...

  • A TASTE FOR MERCURY.  // Power Engineering;Nov2009, Vol. 113 Issue 11, p268 

    The article reports on the discovery by scientists that breaks down the most toxic form of mercury, methylmercury. Researchers discovered that the enzyme MerB gives bacteria the ability to reduce methylmercury to a less toxic form that poses substantially less environmental risk. The enzyme...

  • Organo(organooxo)mercury(II) chemistry – Synthesis and structure of methyl(phenoxo)mercury(II). Canty, Allan J.; Devereux, Janette W.; Skelton, Brian W.; White, Allan H. // Canadian Journal of Chemistry;Feb2006, Vol. 84 Issue 2, p77 

    Methyl(phenoxo)mercury(II) may be obtained from the reaction of methyl(chloro)mercury(II) with silver(I) oxide, followed by addition of phenol. The dominant motif of the structure is a pair of independent MeHgOPh aggregates (Hg—C,O 2.05(2) Å, 2.06(1) Å (x2); C-Hg-O 176.6(5)°,...

  • Predicting Mercury in Mallard Ducklings from Mercury in Chorioallantoic Membranes. Heinz, G. H.; Hoffman, D. J. // Bulletin of Environmental Contamination & Toxicology;Jun2003, Vol. 70 Issue 6, p1242 

    The article reports on predicting mercury in mallard ducklings from mercury in chorioallantoic membranes. Methylmercury has been suspected as a cause of impaired reproduction in wild birds such as the common loon and common tern, but the confounding effects of other environmental stressors has...

  • Total mercury and methylmercury distributions in surface sediments from Kongsfjorden, Svalbard, Norwegian Arctic. Liu, Yang; Chai, Xiaoli; Hao, Yongxia; Gao, Xiaofeng; Lu, Zhibo; Zhao, Youcai; Zhang, Jie; Cai, Minghong // Environmental Science & Pollution Research;Jun2015, Vol. 22 Issue 11, p8603 

    The total mercury (THg) and methylmercury (MeHg) distributions in the surface sediments of Kongsfjorden, Svalbard, in the Norwegian Arctic were investigated in this study. The results showed that THg concentrations ranged from 9.11 to 86.73 ng g, whereas MeHg concentrations had an average of...

  • Trophic transfer and accumulation of mercury in ray species in coastal waters affected by historic mercury mining (Gulf of Trieste, northern Adriatic Sea). Horvat, Milena; Degenek, Nina; Lipej, Lovrenc; Snoj Tratnik, Janja; Faganeli, Jadran // Environmental Science & Pollution Research;Mar2014, Vol. 21 Issue 6, p4163 

    Total mercury (Hg) and monomethylmercury (MMHg) were analysed in the gills, liver and muscle of four cartilaginous fish species (top predators), namely, the eagle ray ( Myliobatis aquila), the bull ray ( Pteromylaeus bovinus), the pelagic stingray ( Dasyatis violacea) and the common stingray (...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics