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Proos, Lemm A.
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Publications (10 of 15) Show all publications
Proos, L. A., Arnell, K., Gustafsson, J. & Dahl, M. (2017). Early/Precocious Puberty in Children with Pre/Perinatal Hydrocephalus. Hormone Research in Paediatrics, 88, 180-181
Open this publication in new window or tab >>Early/Precocious Puberty in Children with Pre/Perinatal Hydrocephalus
2017 (English)In: Hormone Research in Paediatrics, ISSN 1663-2818, E-ISSN 1663-2826, Vol. 88, p. 180-181Article in journal, Meeting abstract (Other academic) Published
National Category
Pediatrics
Identifiers
urn:nbn:se:uu:diva-346841 (URN)000412595402162 ()
Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-04-03Bibliographically approved
Proos, L. A., Gustafsson, J. & Tuvemo, T. (2014). Catch-up growth following undernutrition - a risk factor for early puberty in internationally adopted children [Letter to the editor]. Pediatrics
Open this publication in new window or tab >>Catch-up growth following undernutrition - a risk factor for early puberty in internationally adopted children
2014 (English)In: Pediatrics, ISSN 0031-4005, E-ISSN 1098-4275Article in journal, Letter (Other academic) Published
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-220041 (URN)
Note

Hayes, Peter, International Adoption, “Early” Puberty, and Underrecorded Age, Pediatrics 2013; 131:6 1029-1031; doi:10.1542/peds.2013-0232

Available from: 2014-03-10 Created: 2014-03-10 Last updated: 2017-12-05Bibliographically approved
Proos, L. A., Gustafsson, J. & Tuvemo, T. (2013). Early Puberty in Internationally Adopted Children - Fact or Artefact? [Letter to the editor]. Pediatrics
Open this publication in new window or tab >>Early Puberty in Internationally Adopted Children - Fact or Artefact?
2013 (English)In: Pediatrics, ISSN 0031-4005, E-ISSN 1098-4275Article in journal, Letter (Other academic) Published
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-220047 (URN)
Note

Hayes, Peter, International Adoption, “Early” Puberty, and Underrecorded Age,  Pediatrics 2013; 131:6 1029-1031; doi:10.1542/peds.2013-0232

Available from: 2014-03-10 Created: 2014-03-10 Last updated: 2017-12-05Bibliographically approved
Proos, L. A. & Gustafsson, J. (2012). Is Early Puberty Triggered by Catch-Up Growth Following Undernutrition?. International Journal of Environmental Research and Public Health, 9(5), 1791-1809
Open this publication in new window or tab >>Is Early Puberty Triggered by Catch-Up Growth Following Undernutrition?
2012 (English)In: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 9, no 5, p. 1791-1809Article, review/survey (Refereed) Published
Abstract [en]

Undernutrition during fetal and postnatal life is still a major problem in many low- and middle-income countries. Even in high-income countries malnutrition may exist in cases of intrauterine growth retardation, as well as in chronic conditions such as anorexia nervosa and inflammatory bowel disease. Children adopted from developing countries are often chronically malnourished. Nutritional rehabilitation, resulting in catch-up growth, is often complicated by influences originating in fetal life as well as during postnatal growth. This may result in hormonal and metabolic changes as well as alterations in pubertal development. The present review focuses on fetal, postnatal and fetal-postnatal undernutrition and subsequent catch-up growth as well as catch-up growth in relation to pubertal development. Catch-up growth in children can be associated with early puberty following fetal or combined fetal-postnatal undernutrition. However, early puberty does not seem to occur following catch-up growth after isolated postnatal undernutrition. Gonadotropins have been reported to be elevated in prepubertal adopted girls as well as during catch-up growth in animals. Even if other factors may contribute, linear catch-up growth seems to be associated with the timing of pubertal development. The mechanisms behind this are still unknown. Future research may elucidate how to carry out nutritional rehabilitation without risk for early pubertal development.

Keywords
undernutrition, stunting, nutritional rehabilitation, adopted children, catch-up growth, early puberty
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-176947 (URN)10.3390/ijerph9051791 (DOI)000304543200019 ()
Available from: 2012-06-28 Created: 2012-06-28 Last updated: 2017-12-07Bibliographically approved
Proos, L. A., Tuvemo, T., Ahlsten, G., Gustafsson, J. & Dahl, M. (2011). Increased perinatal intracranial pressure and brainstem dysfunction predict early puberty in boys with myelomeningocele. Acta Paediatrica, 100(10), 1368-1372
Open this publication in new window or tab >>Increased perinatal intracranial pressure and brainstem dysfunction predict early puberty in boys with myelomeningocele
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2011 (English)In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 100, no 10, p. 1368-1372Article in journal (Refereed) Published
Abstract [en]

Background: Children with myelomeningocele (MMC) run an increased risk of developing early or precocious puberty (E/PP).

Aim: To identify risk factors for E/PP in boys with MMC.

Methods: Boys born between 1970 and 1992, treated for MMC at the University Children's Hospital, Uppsala, were identified. Thirty-eight boys were eligible to be included. Medical records were examined retrospectively. Early puberty was defined as pubertal signs before the age of 10 years and 2 months. Precocious puberty was defined as the appearance of these signs before 9 years of age. Increased intracranial pressure perinatally was defined as wide sutures, bulging fontanelles and increased/increasing head circumference at birth and/or during the first week after birth. Early brainstem dysfunction was defined as severe and persistent feeding and respiratory problems before the age of 3 months despite proper control of the hydrocephalus.

Results: Of the 38 boys, 8 (21%) had E/PP, which was strongly associated with increased intracranial pressure perinatally and also with early brainstem dysfunction. Multivariate regression analysis showed early brainstem dysfunction to have the highest explanatory value regarding the occurrence of early puberty.

Conclusion: Increased intracranial pressure perinatally and brainstem dysfunction early in life are strong predictors of E/PP in boys with MMC.

Keywords
Brainstem dysfunction, Early puberty, Intracranial pressure, Myelomeningocele, Perinatal
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-159462 (URN)10.1111/j.1651-2227.2011.02335.x (DOI)000294900300030 ()
Available from: 2011-10-04 Created: 2011-10-03 Last updated: 2018-01-17Bibliographically approved
Proos, L. A. (2011). Undernäring, återhämtningstillväxt och pubertetsutveckling hos adoptivbarn. Barnen Framför Allt, 2-3, 10-11
Open this publication in new window or tab >>Undernäring, återhämtningstillväxt och pubertetsutveckling hos adoptivbarn
2011 (Swedish)In: Barnen Framför Allt, ISSN 0282-454X, Vol. 2-3, p. 10-11Article in journal (Other academic) Published
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-164840 (URN)
Available from: 2011-12-29 Created: 2011-12-29 Last updated: 2012-03-16Bibliographically approved
Proos, L. A., Lönnerholm, T., Jonsson, B. & Tuvemo, T. (2010). Can the TW3 bone age determination method provide additional criteria for growth hormone treatment in adopted girls with early puberty?: A comparison of the Tanner-Whitehouse 3 method with the Greulich-Pyle and the Tanner-Whitehouse 2 methods. Hormone research in pædiatrics, 73(1), 35-40
Open this publication in new window or tab >>Can the TW3 bone age determination method provide additional criteria for growth hormone treatment in adopted girls with early puberty?: A comparison of the Tanner-Whitehouse 3 method with the Greulich-Pyle and the Tanner-Whitehouse 2 methods
2010 (English)In: Hormone research in pædiatrics, ISSN 1663-2818, Vol. 73, no 1, p. 35-40Article in journal (Refereed) Published
Abstract [en]

BACKGROUND/AIMS: Gonadotropin-releasing hormone analogues (GnRHa) are the accepted treatment of idiopathic central precocious puberty. As it has been found that growth velocity may be decreased with GnRHa treatment, clinical trials with GnRHa combined with growth hormone (GH) have been carried out. In a recent study 46 adopted girls with early or precocious puberty were randomly assigned to treatment with either GnRHa or GnRHa combined with GH, and followed to final height (FH). It was found that FH was significantly higher in the combined treatment group, 158.9 compared with 155.8 cm in the GnRHa treated group. In order to select the patients who could benefit from added GH, predictions of FH at the start of treatment according to the methods of bone age determination of Greulich-Pyle (GP) and Tanner-Whitehouse 2 (TW2) were compared. It was found that the GP method was the most useful method for patient selection. Recently, a revision of the Tanner-Whitehouse method, named Tanner-Whitehouse 3 (TW3), has been developed. The present study examined the usefulness of the TW3 method in selecting suitable patients for combined treatment. METHOD: The TW3 method bone age determinations of the 46 girls were compared to the GP and TW2 method determinations, using the differences between actual FH and predicted adult height (PAH). Beside accuracy of prediction of FH, the criteria of efficiency of selection and replicability were applied in the comparison. RESULTS: We found that the GP method, also when compared to the TW3 method, gave the most accurate prediction of the FH on only GnRHa treatment. This gives the best ground for selection of patients who can benefit from combined treatment. The GP method was also the most efficient in selecting patients, i.e., it could select the least number of patients that needed the combined treatment. The only drawback of the GP method was that it requires an experienced pediatric radiologist. Automated methods are being developed and may soon facilitate the use of the GP method for those less experienced. The FH after combined treatment could be predicted with an equation including PAH GP as well as PAH TW3 as variables. CONCLUSION: The GP method remains the most useful method for selection of those patients who will benefit most from the addition of GH to GnRHa in the treatment of idiopathic central precocious or early puberty. FH prediction after combined treatment requires PAH GP as well as PAH TW3.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-122063 (URN)10.1159/000271914 (DOI)000276919200006 ()20190538 (PubMedID)
Available from: 2010-04-06 Created: 2010-04-06 Last updated: 2012-03-20Bibliographically approved
Proos, L. A. (2009). Growth & development of Indian children adopted in Sweden.. Indian Journal of Medical Research (IJMR), 130(5), 646-50
Open this publication in new window or tab >>Growth & development of Indian children adopted in Sweden.
2009 (English)In: Indian Journal of Medical Research (IJMR), ISSN 0971-5916, Vol. 130, no 5, p. 646-50Article in journal (Refereed) Published
Abstract [en]

More than 6800 children from India have been adopted in Sweden over the last four decades. At arrival many were undernourished and suffered from infectious diseases. Catch-up growth was common. Unexpectedly, cases of early pubertal development were subsequently reported. In order to investigate the growth and development of adopted children more in detail we studied 114 children adopted from India prospectively during two years. The majority were stunted at arrival and caught up in height and weight after two years. Psychomotor retardation and common infections diminished fairly soon. Those that were stunted did not attain the higher catch-up levels of those not stunted at arrival. Low birthweight also limited the degree of catch-up growth. 107 girls were analysed retrospectively in another study. The median menarcheal age was 11.6 yr (range 7.3-14.6 yr) which is significantly earlier than the mean in Swedish and privileged Indian girls (13.0 and 12.4-12.9 yr, respectively). The pubertal linear growth component was normal in duration and magnitude but likewise started 1.5 yr earlier. The final height/age was 154 cm (-1.4 SDS) and the weight/age 46.9 kg (-1.1 SDS) 8 per cent were 145 cm or shorter. Stunting limited catch-up growth and final height. Those that were most stunted at arrival, and had the fastest catch-up growth, had the earliest menarche. Good maternal and child nutrition is necessary for full expression of a child's growth potential. What is lost in growth early in life can only partially be recovered by catch-up growth. Such growth is associated with risk for early pubertal development which abbreviates the childhood growth period and limits final height. The mechanism underlying the early pubertal development, and the optimal management of nutrition rehabilitation after chronic malnutrition, need to be clarified by further studies.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-245115 (URN)20099404 (PubMedID)
Available from: 2015-02-25 Created: 2015-02-25 Last updated: 2017-12-04
Holmbäck, U., Fridman, J., Gustafsson, J., Proos, L., Sundelin, C. & Forslund, A. (2007). Overweight more prevalent among children than among adolescents. Acta Paediatrica, 96(4), 577-581
Open this publication in new window or tab >>Overweight more prevalent among children than among adolescents
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2007 (English)In: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 96, no 4, p. 577-581Article in journal (Refereed) Published
Abstract [en]

Aims

To study if there is a change in paediatric overweight/obesity prevalence from 1982 to 2002 in a population with a high proportion of post-graduate education.

Design

Two samples of children in Uppsala County, Sweden, were compared: children who were 4, 10 and 16 year old in 1982; or 4, 10 and 16 year old in 2002. Mean BMI (in the lowest 10%, middle 50% and highest 10%) and ISO-BMI ('age adjusted BMI') cut-off values were calculated in each age and gender group.

Results

Using the mean BMI or ISO-BMI cut-off values, the BMI-distribution shifted from 1982 to 2002. More 4- and 10-year-old girls and boys were overweight/obese, although this shift was larger in girls. No shift was seen in the 16-year-olds, only the middle 50% group in the 16-year-old girls had a slight increase of their mean BMI. In the 2002 4-year-old, and both 10-year-old samples, a higher proportion of the girls were overweight/obese compared to the boys, but no difference was seen in the 16-year-old sample.

Conclusion

Young children, especially girls, have become much more overweight/obese during the past 20 years, despite a high proportion of post-graduate education in the population. The lack of major change in 16-year-olds may suggest a rather recent change in the children's environment/lifestyle.

Place, publisher, year, edition, pages
John Wiley & Sons, 2007
Keywords
Body mass index, Epidemiology, Gender, Trends
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-11330 (URN)10.1111/j.1651-2227.2006.00189.x (DOI)000245118500023 ()17391474 (PubMedID)
Available from: 2007-09-13 Created: 2007-09-13 Last updated: 2017-12-11Bibliographically approved
Elmund, A., Melin, L., von Knorring, A.-L., Proos, L. A. & Tuvemo, T. (2007). Relation problems in internationally adopted juvenile delinquents. Upsala Journal of Medical Sciences, 112(1), 105-121
Open this publication in new window or tab >>Relation problems in internationally adopted juvenile delinquents
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2007 (English)In: Upsala Journal of Medical Sciences, ISSN 0300-9734, E-ISSN 2000-1967, Vol. 112, no 1, p. 105-121Article in journal (Refereed) Published
Abstract [en]

Objective: Internationally adopted delinquents are overrepresented in juvenile Swedish institutions. With the purpose of investigating possible reasons for this overrepresentation, this study compared adopted delinquent adolescents and internationally adopted controls in the structure and functioning of their current relations, especially with their parents. Methods: Internationally adopted adolescents admitted to institutional care (N=20) and non-delinquent internationally adopted controls (N=21) were compared through: a questionnaire; "family relations", a subscale in I think I am; "Family climate" ( from Karolinska Scale of Personality); Individual Schedule of Social Interaction; and an Attachment Test. Results: Bad relations with adoptive parents were more prevalent in internationally adopted delinquents compared to internationally adopted controls. Furthermore, the adopted delinquents and their parents blamed each other for the problems and the adopted delinquents reported physical and emotional abuse. Conclusions: Internationally adopted delinquents reported more problems in their relationships to their parents than adopted controls did.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-95296 (URN)000253451900010 ()17578813 (PubMedID)
Available from: 2006-12-21 Created: 2006-12-21 Last updated: 2017-12-14Bibliographically approved
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