Influence of physiological stress on the presence of hypoplasia and fluctuating asymmetry in a medieval population from the village of Sypniewo

Gawlikowska-Sroka, Aleksandra; Dąbrowski, Paweł; Szczurowski, Jacek; Dzięciołowska-Baran, Edyta; Staniowski, Tomasz

doi:10.1016/j.ijpp.2017.10.002

Cited by 10 publications

(9 citation statements)

References 74 publications

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“…Our results are inconsistent with previous research studying enamel defects and FA, which found no significant relationship between the two (e.g., Gawlikowska-Sroka et al, 2017;Hoover & Matsumura, 2008;Jung et al, 2016;Palubeckaité & Jankauskas, 2001). Previous results have often been interpreted to mean that these stress indicators capture unrelated acute and chronic stresses.…”

Section: Discussioncontrasting

confidence: 99%

Childhood stress and developmental instability: Comparing microscopic enamel defects and cranial fluctuating asymmetry in a colonial Mexican sample

Moes

Willermet

Hunley

et al. 2022

American Journal of Biological Anthropology

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Objectives Recent tests of the relationship between enamel defects, an indicator of early life stress, and fluctuating asymmetry (FA), a measure of cumulative developmental instability, have produced equivocal results. This may be because they use methods that underestimate the number of defects. We reinvestigate this relationship using high‐resolution microscopy images of tooth surfaces. Further, we test the hypothesis that developmental stresses during the earliest period of tooth development have a greater impact on FA than stresses during subsequent periods. Materials and Methods The sample consists of 48 individuals from two colonial‐era cemeteries in Mexico City. Using one canine from each individual, we created photomontages using a 2D light microscope. Tooth crowns were divided into three developmental periods. Defects were identified as widely spaced perikymata using moving z‐scores. We compared defect presence, frequency, and timing to FA calculated from 11 landmarks using geometric morphometrics from 3D models of each cranium. Results Both the presence and frequency of enamel defects are significantly associated with an increase in FA. Contrary to our expectations, defects that formed in the latest developmental period (4–5.5 years) were uniquely associated with an increase in FA, relative to the other two periods. Discussion The presence and frequency of stress during childhood increases developmental instability. The time between 4 and 5.5 years may be a sensitive window of development in which disruptions to growth have a long‐lasting effect on developmental instability. Results indicate that research on developmental stress should consider the timing and frequency of stress events to more fully understand their impact on later life.

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Section: Discussioncontrasting

confidence: 99%

Childhood stress and developmental instability: Comparing microscopic enamel defects and cranial fluctuating asymmetry in a colonial Mexican sample

Moes

Willermet

Hunley

et al. 2022

American Journal of Biological Anthropology

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“…The value of the fetal collection was confirmed in numerous previously published scientific studies (27)(28)(29)(30)(31)(32)(33). The scientific experience of the team has been confirmed in many works using anatomical scientific methodology and anatomical techniques used for statistical analysis (34)(35)(36).…”

Section: Methodsmentioning

confidence: 65%

Topography of the common fibular nerve terminal division in human foetuses

2022

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Background:The progress of pediatric surgery and increasingly better diagnosis of fetal defects require detailed knowledge of human developmental anatomy. Precise knowledge of the anatomy of innervation of the lower extremities corresponds to this subject and is not only cognitive but also clinically important. The end of the common fibular nerve is superficially located in the area exposed to frequent injuries as well as in the area subject to possible surgical repair procedures. Materials and methods:The analysis was carried out on 200 human foetuses aged from the 113 th day to 222 nd day of foetal life. The study material is a part of local fetal collection. The study incorporated the following methods: anthropological, preparational and image acquisition which was acquired with the use of high-resolution digital camera. Statistical analysis was carried out with the use of STATISTICA package. Results:Based on the research results the new typology of the examined nerve was determined. The head of the fibula was the criterion: (i) high divisionabove the head of the fibula (1%); (ii) intermediate divisionat the height of the head of the fibula (34%); (iii) low divisionbelow the head of the fibula (65%). The mathematical analysis did not reveal statistically significant bilateral and gender differences. Moreover the additional branch was observed in 30% of fetuses, regardless of age class. This branch occurred in 50% of cases in both sides of the fetus. This nerve was defined as the accessory fibular nerve (nervus fibularis/peroneus accessorius). Conclusions:The created unique typology of the terminal division of common fibular nerve is an important supplement to the anatomical knowledge and at the same time, due to the peripheral and superficial location of the described structures, it has a relatively high clinical significance.

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“…Even so, while the developmental growth data published by Reid and Dean (, ) are increasingly being utilized in studies to estimate the chronology of LEH defects (e.g., Berbesque & Hoover, ; Cares Henriquez & Oxenham, ; Gamble, Boldsen, & Hoppa, ; Miszkiewicz, ; Novak et al, ; Smith, Kurtenbach, & Vermaat, ; Temple, Nakatsukasa, & McGroarty, ; Tomczyk, Tomczyk‐Gruca, & Zalewska, ; Trinkaus, Mednikova, & Dobrovolskaya, ), others continue to use the linear distance‐based regression method (e.g., Krenz‐Niedbala, ; Krenz‐Niedbała & Kozłowski, ; Smith et al, ), or other iterations constructed from the original standards (e.g., D'Anastasio et al, ; Gawlikowska‐Sroka, Dabrowski, Szczurowski, Dzieciolowska‐Baran, & Staniowski, ).…”

Section: Current Methods For Estimating Chronologymentioning

confidence: 99%

New distance‐based exponential regression method and equations for estimating the chronology of linear enamel hypoplasia (LEH) defects on the anterior dentition

Henriquez

Oxenham

2018

American J Phys Anthropol

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Objectives We present a new distance‐based exponential regression approach based on published histological data to refine the objectivity, accuracy, and precision of age estimates of LEH defect formation on the anterior dentition. Methods Published histological data of anterior tooth crown growth for two samples (northern European and southern African) were fitted with exponential trendlines to construct exponential regression equations for each tooth type. A theoretical comparison of the age estimates produced by two commonly used methods (decile chart and linear regression), and those based on the exponential regression equations presented in this article were undertaken. Paired‐samples t‐tests were used to determine whether the estimates obtained by these methods differed significantly. Results Exponential regression equations were able to accurately replicate age estimates produced by the decile‐chart method. For defects that fell precisely on a decile, estimates differed by 1–23 days. Estimates based on the linear regression method were consistently younger by 4.5–16 months. For defects that fell within deciles, the exponential regression equation estimates, when different, were 12 days to 4 months older than those yielded by the decile method. Conclusions By combining currently published histological data on anterior tooth crown growth with a regression approach, it is possible to produce more accurate age estimates than yielded by methods that do not rely on histological data. Furthermore, this approach also greatly improves the objectivity, precision and replicability of results, especially for defects that fall between deciles, when compared to the decile chart method.

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Influence of physiological stress on the presence of hypoplasia and fluctuating asymmetry in a medieval population from the village of Sypniewo

Cited by 10 publications

References 74 publications

Childhood stress and developmental instability: Comparing microscopic enamel defects and cranial fluctuating asymmetry in a colonial Mexican sample

Childhood stress and developmental instability: Comparing microscopic enamel defects and cranial fluctuating asymmetry in a colonial Mexican sample

Topography of the common fibular nerve terminal division in human foetuses

New distance‐based exponential regression method and equations for estimating the chronology of linear enamel hypoplasia (LEH) defects on the anterior dentition

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