from Section 3 - Long-term consequences
Published online by Cambridge University Press: 05 August 2012
Introduction
The early life environment may persistently influence the development of adipose tissue, thereby predisposing the offspring to obesity. There is substantial development within the adipose tissue depots from early fetal life through weaning to puberty [1]. These periods are associated with critical windows of vulnerability to the environment and lifestyle. Importantly, these windows differ greatly between species and are dependent on the maturity of the adipose tissue at birth [2].
The majority of animal species have only very limited adipose tissue stores at birth, which may relate to the high energy costs associated with deposition of fat as opposed to protein [3]. In addition, fetal adipose tissue tends to be primarily brown fat, which is characterized as being uniquely able to rapidly generate heat due to the presence of uncoupling protein (UCP)1 [4–6], with thermal production being as high as 300 W/kg compared to 1W/kg in all other tissues [7,8]. One notable exception is the human infant, which not only has appreciable brown fat stores but also large amounts of white subcutaneous fat [9]. Consequently, the newborn is capable of both generating large amounts of heat around its internal organs following cold exposure to the extrauterine environment, and of minimizing heat loss due to the insulatory properties of white fat.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.