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Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis
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| Zeitschriftentitel: | Journal of Anatomy |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Journal of Anatomy, 228, 2016, 6, S. 919-928 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
|
| Schlagwörter: |
| author_facet |
Mahoney, Patrick Miszkiewicz, Justyna J. Pitfield, Rosie Schlecht, Stephen H. Deter, Chris Guatelli‐Steinberg, Debbie Mahoney, Patrick Miszkiewicz, Justyna J. Pitfield, Rosie Schlecht, Stephen H. Deter, Chris Guatelli‐Steinberg, Debbie |
|---|---|
| author |
Mahoney, Patrick Miszkiewicz, Justyna J. Pitfield, Rosie Schlecht, Stephen H. Deter, Chris Guatelli‐Steinberg, Debbie |
| spellingShingle |
Mahoney, Patrick Miszkiewicz, Justyna J. Pitfield, Rosie Schlecht, Stephen H. Deter, Chris Guatelli‐Steinberg, Debbie Journal of Anatomy Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis Cell Biology Developmental Biology Molecular Biology Ecology, Evolution, Behavior and Systematics Histology Anatomy |
| author_sort |
mahoney, patrick |
| spelling |
Mahoney, Patrick Miszkiewicz, Justyna J. Pitfield, Rosie Schlecht, Stephen H. Deter, Chris Guatelli‐Steinberg, Debbie 0021-8782 1469-7580 Wiley Cell Biology Developmental Biology Molecular Biology Ecology, Evolution, Behavior and Systematics Histology Anatomy http://dx.doi.org/10.1111/joa.12450 <jats:title>Abstract</jats:title><jats:p>Across mammalian species, the periodicity with which enamel layers form (Retzius periodicity) in permanent teeth corresponds with average body mass and the pace of life history. According to the Havers–Halberg Oscillation hypothesis (<jats:styled-content style="fixed-case">HHO</jats:styled-content>), Retzius periodicity (<jats:styled-content style="fixed-case">RP</jats:styled-content>) is a manifestation of a biorhythm that is also expressed in lamellar bone. Potentially, these links provide a basis for investigating aspects of a species’ biology from fossilized teeth. Here, we tested intra‐specific predictions of this hypothesis on skeletal samples of human juveniles. We measured daily enamel growth increments to calculate <jats:styled-content style="fixed-case">RP</jats:styled-content> in deciduous molars (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>25). Correlations were sought between <jats:styled-content style="fixed-case">RP</jats:styled-content>, molar average and relative enamel thickness (<jats:styled-content style="fixed-case">AET</jats:styled-content>,<jats:styled-content style="fixed-case"> RET</jats:styled-content>), and the average amount of primary bone growth (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>7) in humeri of age‐matched juveniles. Results show a previously undescribed relationship between <jats:styled-content style="fixed-case">RP</jats:styled-content> and enamel thickness. Reduced major axis regression reveals <jats:styled-content style="fixed-case">RP</jats:styled-content> is significantly and positively correlated with <jats:styled-content style="fixed-case">AET</jats:styled-content> and <jats:styled-content style="fixed-case">RET</jats:styled-content>, and scales isometrically. The direction of the correlation was opposite to <jats:styled-content style="fixed-case">HHO</jats:styled-content> predictions as currently understood for human adults. Juveniles with higher <jats:styled-content style="fixed-case">RP</jats:styled-content>s and thicker enamel had increased primary bone formation, which suggests a coordinating biorhythm. However, the direction of the correspondence was, again, opposite to predictions. Next, we compared <jats:styled-content style="fixed-case">RP</jats:styled-content> from deciduous molars with new data for permanent molars, and with previously published values. The lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 4 and 5 days in deciduous enamel extends below the lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 6 days in permanent enamel. A lowered range of <jats:styled-content style="fixed-case">RP</jats:styled-content> values in deciduous enamel implies that the underlying biorhythm might change with age. Our results develop the intra‐specific <jats:styled-content style="fixed-case">HHO</jats:styled-content> hypothesis.</jats:p> Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis Journal of Anatomy |
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Wiley, 2016 |
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2016 |
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Wiley |
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Journal of Anatomy |
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49 |
| title |
Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_unstemmed |
Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_full |
Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_fullStr |
Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_full_unstemmed |
Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_short |
Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_sort |
biorhythms, deciduous enamel thickness, and primary bone growth: a test of the havers‐halberg oscillation hypothesis |
| topic |
Cell Biology Developmental Biology Molecular Biology Ecology, Evolution, Behavior and Systematics Histology Anatomy |
| url |
http://dx.doi.org/10.1111/joa.12450 |
| publishDate |
2016 |
| physical |
919-928 |
| description |
<jats:title>Abstract</jats:title><jats:p>Across mammalian species, the periodicity with which enamel layers form (Retzius periodicity) in permanent teeth corresponds with average body mass and the pace of life history. According to the Havers–Halberg Oscillation hypothesis (<jats:styled-content style="fixed-case">HHO</jats:styled-content>), Retzius periodicity (<jats:styled-content style="fixed-case">RP</jats:styled-content>) is a manifestation of a biorhythm that is also expressed in lamellar bone. Potentially, these links provide a basis for investigating aspects of a species’ biology from fossilized teeth. Here, we tested intra‐specific predictions of this hypothesis on skeletal samples of human juveniles. We measured daily enamel growth increments to calculate <jats:styled-content style="fixed-case">RP</jats:styled-content> in deciduous molars (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>25). Correlations were sought between <jats:styled-content style="fixed-case">RP</jats:styled-content>, molar average and relative enamel thickness (<jats:styled-content style="fixed-case">AET</jats:styled-content>,<jats:styled-content style="fixed-case"> RET</jats:styled-content>), and the average amount of primary bone growth (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>7) in humeri of age‐matched juveniles. Results show a previously undescribed relationship between <jats:styled-content style="fixed-case">RP</jats:styled-content> and enamel thickness. Reduced major axis regression reveals <jats:styled-content style="fixed-case">RP</jats:styled-content> is significantly and positively correlated with <jats:styled-content style="fixed-case">AET</jats:styled-content> and <jats:styled-content style="fixed-case">RET</jats:styled-content>, and scales isometrically. The direction of the correlation was opposite to <jats:styled-content style="fixed-case">HHO</jats:styled-content> predictions as currently understood for human adults. Juveniles with higher <jats:styled-content style="fixed-case">RP</jats:styled-content>s and thicker enamel had increased primary bone formation, which suggests a coordinating biorhythm. However, the direction of the correspondence was, again, opposite to predictions. Next, we compared <jats:styled-content style="fixed-case">RP</jats:styled-content> from deciduous molars with new data for permanent molars, and with previously published values. The lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 4 and 5 days in deciduous enamel extends below the lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 6 days in permanent enamel. A lowered range of <jats:styled-content style="fixed-case">RP</jats:styled-content> values in deciduous enamel implies that the underlying biorhythm might change with age. Our results develop the intra‐specific <jats:styled-content style="fixed-case">HHO</jats:styled-content> hypothesis.</jats:p> |
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| author | Mahoney, Patrick, Miszkiewicz, Justyna J., Pitfield, Rosie, Schlecht, Stephen H., Deter, Chris, Guatelli‐Steinberg, Debbie |
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| description | <jats:title>Abstract</jats:title><jats:p>Across mammalian species, the periodicity with which enamel layers form (Retzius periodicity) in permanent teeth corresponds with average body mass and the pace of life history. According to the Havers–Halberg Oscillation hypothesis (<jats:styled-content style="fixed-case">HHO</jats:styled-content>), Retzius periodicity (<jats:styled-content style="fixed-case">RP</jats:styled-content>) is a manifestation of a biorhythm that is also expressed in lamellar bone. Potentially, these links provide a basis for investigating aspects of a species’ biology from fossilized teeth. Here, we tested intra‐specific predictions of this hypothesis on skeletal samples of human juveniles. We measured daily enamel growth increments to calculate <jats:styled-content style="fixed-case">RP</jats:styled-content> in deciduous molars (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>25). Correlations were sought between <jats:styled-content style="fixed-case">RP</jats:styled-content>, molar average and relative enamel thickness (<jats:styled-content style="fixed-case">AET</jats:styled-content>,<jats:styled-content style="fixed-case"> RET</jats:styled-content>), and the average amount of primary bone growth (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>7) in humeri of age‐matched juveniles. Results show a previously undescribed relationship between <jats:styled-content style="fixed-case">RP</jats:styled-content> and enamel thickness. Reduced major axis regression reveals <jats:styled-content style="fixed-case">RP</jats:styled-content> is significantly and positively correlated with <jats:styled-content style="fixed-case">AET</jats:styled-content> and <jats:styled-content style="fixed-case">RET</jats:styled-content>, and scales isometrically. The direction of the correlation was opposite to <jats:styled-content style="fixed-case">HHO</jats:styled-content> predictions as currently understood for human adults. Juveniles with higher <jats:styled-content style="fixed-case">RP</jats:styled-content>s and thicker enamel had increased primary bone formation, which suggests a coordinating biorhythm. However, the direction of the correspondence was, again, opposite to predictions. Next, we compared <jats:styled-content style="fixed-case">RP</jats:styled-content> from deciduous molars with new data for permanent molars, and with previously published values. The lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 4 and 5 days in deciduous enamel extends below the lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 6 days in permanent enamel. A lowered range of <jats:styled-content style="fixed-case">RP</jats:styled-content> values in deciduous enamel implies that the underlying biorhythm might change with age. Our results develop the intra‐specific <jats:styled-content style="fixed-case">HHO</jats:styled-content> hypothesis.</jats:p> |
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| spelling | Mahoney, Patrick Miszkiewicz, Justyna J. Pitfield, Rosie Schlecht, Stephen H. Deter, Chris Guatelli‐Steinberg, Debbie 0021-8782 1469-7580 Wiley Cell Biology Developmental Biology Molecular Biology Ecology, Evolution, Behavior and Systematics Histology Anatomy http://dx.doi.org/10.1111/joa.12450 <jats:title>Abstract</jats:title><jats:p>Across mammalian species, the periodicity with which enamel layers form (Retzius periodicity) in permanent teeth corresponds with average body mass and the pace of life history. According to the Havers–Halberg Oscillation hypothesis (<jats:styled-content style="fixed-case">HHO</jats:styled-content>), Retzius periodicity (<jats:styled-content style="fixed-case">RP</jats:styled-content>) is a manifestation of a biorhythm that is also expressed in lamellar bone. Potentially, these links provide a basis for investigating aspects of a species’ biology from fossilized teeth. Here, we tested intra‐specific predictions of this hypothesis on skeletal samples of human juveniles. We measured daily enamel growth increments to calculate <jats:styled-content style="fixed-case">RP</jats:styled-content> in deciduous molars (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>25). Correlations were sought between <jats:styled-content style="fixed-case">RP</jats:styled-content>, molar average and relative enamel thickness (<jats:styled-content style="fixed-case">AET</jats:styled-content>,<jats:styled-content style="fixed-case"> RET</jats:styled-content>), and the average amount of primary bone growth (<jats:italic>n </jats:italic>=<jats:italic> </jats:italic>7) in humeri of age‐matched juveniles. Results show a previously undescribed relationship between <jats:styled-content style="fixed-case">RP</jats:styled-content> and enamel thickness. Reduced major axis regression reveals <jats:styled-content style="fixed-case">RP</jats:styled-content> is significantly and positively correlated with <jats:styled-content style="fixed-case">AET</jats:styled-content> and <jats:styled-content style="fixed-case">RET</jats:styled-content>, and scales isometrically. The direction of the correlation was opposite to <jats:styled-content style="fixed-case">HHO</jats:styled-content> predictions as currently understood for human adults. Juveniles with higher <jats:styled-content style="fixed-case">RP</jats:styled-content>s and thicker enamel had increased primary bone formation, which suggests a coordinating biorhythm. However, the direction of the correspondence was, again, opposite to predictions. Next, we compared <jats:styled-content style="fixed-case">RP</jats:styled-content> from deciduous molars with new data for permanent molars, and with previously published values. The lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 4 and 5 days in deciduous enamel extends below the lowermost <jats:styled-content style="fixed-case">RP</jats:styled-content> of 6 days in permanent enamel. A lowered range of <jats:styled-content style="fixed-case">RP</jats:styled-content> values in deciduous enamel implies that the underlying biorhythm might change with age. Our results develop the intra‐specific <jats:styled-content style="fixed-case">HHO</jats:styled-content> hypothesis.</jats:p> Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis Journal of Anatomy |
| spellingShingle | Mahoney, Patrick, Miszkiewicz, Justyna J., Pitfield, Rosie, Schlecht, Stephen H., Deter, Chris, Guatelli‐Steinberg, Debbie, Journal of Anatomy, Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis, Cell Biology, Developmental Biology, Molecular Biology, Ecology, Evolution, Behavior and Systematics, Histology, Anatomy |
| title | Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_full | Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_fullStr | Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_full_unstemmed | Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_short | Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| title_sort | biorhythms, deciduous enamel thickness, and primary bone growth: a test of the havers‐halberg oscillation hypothesis |
| title_unstemmed | Biorhythms, deciduous enamel thickness, and primary bone growth: a test of the Havers‐Halberg Oscillation hypothesis |
| topic | Cell Biology, Developmental Biology, Molecular Biology, Ecology, Evolution, Behavior and Systematics, Histology, Anatomy |
| url | http://dx.doi.org/10.1111/joa.12450 |