Discordance of Milk Protein Production Between Right and Left Mammary Glands

Britton,

doi:10.1097/00005176-198601000-00023

Cited by 3 publications

(1 citation statement)

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“…Woolridge e Fisher descreveram cinco lactentes que apresentavam estes sintomas e que regressaram à normalidade dizendo-se simplesmente à mãe que deixasse o seu filho mamar da primeira mama enquanto ele quisesse antes de lhe oferecer a segunda. 14 15 Parece, portanto, que a maioria dos lactentes (mas não todos), em face da fixação arbitrária do tempo de mamar, é ainda assim capaz de obter leite com a composição desejada modificando outros factores. 16 Infelizmente, durante o século passado tornou-se moda limitar simultaneamente os três mecanismos de controlo do lactente (uma ou duas mamas, frequência e tempo a mamar), com regras do tipo «dez minutos de cada mama a cada quatro horas».…”

Section: Dossier: Aleitamento Maternounclassified

Apontamentos de anatomia e fisiologia da lactação

Órfão¹,

Gouveia²

2009

RPMGF

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RESUMOO tamanho das mamas está relacionado com a quantidade de tecido mamário e depósitos de gordura intra e inter lobular, mas não reflecte a sua capacidade funcional.As principais hormonas que regulam a produção de leite são a prolactina, a oxitocina e o FIL (factor inibidor da lactação). Preocupações como o medo de não ter leite suficiente inibem a oxitocina e dificultam a lactação.O lactente pode regular a composição do leite obtido se puder modificar três factores: o tempo de intervalo entre as sucessivas mamadas, o volume de leite ingerido de cada vez e o acesso livre ao leite produzido por uma só mama ou nas duas.De acordo com os estudos observacionais mais recentes, o RN de termo, saudável, quando colocado sobre o abdómen da mãe, desloca-se de forma reflexa e adapta-se autónoma e perfeitamente a uma das mamas sem causar qualquer desconforto/dor à mãe. Este comportamento autónomo do bebé parece ainda estar associado a um maior grau de satisfação materna e prolongamento da amamentação.Dada a especificidade de cada díade mãe-bebé a gestão pelo cliente parece ser a resposta chave para o sucesso do aleitamento materno. ABSTRACTBreast size is related to the amount of mammary tissue and to the deposits of intra and interlobular fat, but doesn't reflect its functional ability.Prolactin, oxytocin and feedback inhibitor of lactation are the main hormones that regulate milk production. Concerns, such as fear of not having enough milk, inhibit prolactin and oxytocin and hinder lactation.The baby can regulate milk composition if he can modify three factors: time between feeds, the amount of ingested milk in each meal and free access to all the milk produced by one or both breasts.According to recent observational studies, when placed on the mother's abdomen, the term healthy newborn moves reflexively, and easily adapts to one of the breasts without causing any pain or discomfort. This autonomous behaviour of the baby seems to be associated to a higher degree of satisfaction of the mother and to an increased duration of breastfeeding.Attending to the particularity of each mother-baby dyad, client oriented management seems to be the key-answer to a successful breastfeeding.

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Section: Dossier: Aleitamento Maternounclassified

Apontamentos de anatomia e fisiologia da lactação

Órfão¹,

Gouveia²

2009

RPMGF

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A Systematic Review of Collection and Analysis of Human Milk for Macronutrient Composition

Leghi

Middleton

Netting

et al. 2020

The Journal of Nutrition

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Background As human milk (HM) composition varies by time and across even a single feed, methods of sample collection can significantly affect the results of compositional analyses and complicate comparisons between studies. Objective The aim was to compare the results obtained for HM macronutrient composition between studies utilizing different sampling methodologies. The results will be used as a basis to identify the most reliable HM sampling approach. Methods EMBASE, MEDLINE/PubMed, Cochrane Library, Scopus, Web of Science, and ProQuest databases were searched for relevant articles. Observational and interventional studies were included, and at least 2 authors screened studies and undertook data extraction. Quality assessment was conducted using the Newcastle-Ottawa scale and previously published pragmatic score. Results A total of 5301 publications were identified from our search, of which 101 studies were included (n = 5049 breastfeeding women). Methods used for HM collection were divided into 3 categories: collection of milk from all feeds over 24 h (32 studies, n = 1309 participants), collection at one time point (62 studies, n = 3432 participants), and “other methods” (7 studies, n = 308 participants). Fat and protein concentrations varied between collection methods within lactation stage, but there were no obvious differences in lactose concentrations. There was substantial variability between studies in other factors potentially impacting HM composition, including stage of lactation, gestational age, and analytical method, which complicated direct comparison of methods. Conclusions This review describes the first systematic evaluation of sampling methodologies used in studies reporting HM composition and highlights the wide range of collection methods applied in the field. This information provides an important basis for developing recommendations for best practices for HM collection for compositional analysis, which will ultimately allow combination of information from different studies and thus strengthen the body of evidence relating to contemporary HM composition. This trial was registered at PROSPERO as CRD42017072563, https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42017072563

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Biologically Active Polypeptides in Milk

Britton

Kastin

1991

The American Journal of the Medical Sciences

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Discordance of Milk Protein Production Between Right and Left Mammary Glands

Cited by 3 publications

References 0 publications

Apontamentos de anatomia e fisiologia da lactação

Apontamentos de anatomia e fisiologia da lactação

A Systematic Review of Collection and Analysis of Human Milk for Macronutrient Composition

Biologically Active Polypeptides in Milk

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