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NCT01106300.

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The multicomponent analysis of human breast milk (BM) by metabolic profiling is a new area of study applied to determining milk composition, and is capable of associating BM composition with maternal characteristics, and subsequent infant health outcomes. A multiplatform approach combining HPLC‐MS and ultra‐performance LC‐MS, GC‐MS, CE‐MS, and 1H NMR spectroscopy was used to comprehensively characterize metabolic profiles from seventy BM samples. A total of 710 metabolites spanning multiple molecular classes were defined. The utility of the individual and combined analytical platforms was explored in relation to numbers of metabolites identified, as well as the reproducibility of the methods. The greatest number of metabolites was identified by the single phase HPLC‐MS method, while CE‐MS uniquely profiled amino acids in detail and NMR was the most reproducible, whereas GC‐MS targeted volatile compounds and short chain fatty acids. Dynamic changes in BM composition were characterized over the first 3 months of lactation. Metabolites identified as altering in abundance over lactation included fucose, di‐ and triacylglycerols, and short chain fatty acids, known to be important for infant immunological, neurological, and gastrointestinal development, as well as being an important source of energy. This extensive metabolic coverage of the dynamic BM metabolome provides a baseline for investigating the impact of maternal characteristics, as well as establishing the impact of environmental and dietary factors on the composition of BM, with a focus on the downstream health consequences this may have for infants.

Background: Resilience is a multidimensional construct that explains why people facing the consequences of adversity and stress can have a positive outcome, emphasizing adjustment to experiences that are perceived as threatening. Objective: The aim of this study is to review the construct of resilience and associated variables in caregivers of patients with chronic, advanced illness and at the end of life. Methods: The review included studies published between January 2009 and January 2019, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guide reporting. The Medline, ScienceDirect, HINARI, PsychINFO, and SciELO databases were used for bibliographic exploration to identify research studies that examined the impact of resilience on adaptation and overall well-being in caregivers of patients with chronic and advanced illness. Results: A total of 23 quantitative and qualitative studies were identified whose aim was to describe the role of resilience in adaptation and coping in caregivers. In these studies, resilience was associated with a positive impact on the quality of life and emotional distress. Communication and social support increase resilient coping strategies. In most selected articles, the sampling strategy used was convenience sampling. Data collection used evaluation scales related to resilience and associated variables for quantitative studies, and semistructured interviews were used for qualitative studies. Conclusion: Promoting a resilient coping style in caregivers reduces the distress that normally results from illness-related changes in the biopsychosocial and spiritual dimensions. A resilient coping style can diminish the risk of stress and burden, and promote adaptation in the caregiver.

AimsTo investigate the effect of kisspeptin on glucose‐stimulated insulin secretion and appetite in humans.Materials and methodsIn 15 healthy men (age: 25.2 ± 1.1 years; BMI: 22.3 ± 0.5 kg m−2), we compared the effects of 1 nmol kg−1 h−1 kisspeptin versus vehicle administration on glucose‐stimulated insulin secretion, metabolites, gut hormones, appetite and food intake. In addition, we assessed the effect of kisspeptin on glucose‐stimulated insulin secretion in vitro in human pancreatic islets and a human β‐cell line (EndoC‐βH1 cells).ResultsKisspeptin administration to healthy men enhanced insulin secretion following an intravenous glucose load, and modulated serum metabolites. In keeping with this, kisspeptin increased glucose‐stimulated insulin secretion from human islets and a human pancreatic cell line in vitro. In addition, kisspeptin administration did not alter gut hormones, appetite or food intake in healthy men.ConclusionsCollectively, these data demonstrate for the first time a beneficial role for kisspeptin in insulin secretion in humans in vivo. This has important implications for our understanding of the links between reproduction and metabolism in humans, as well as for the ongoing translational development of kisspeptin‐based therapies for reproductive and potentially metabolic conditions.

We report XCMS-MRM and METLIN-MRM ( http://xcmsonline-mrm.scripps.edu/ and http://metlin.scripps.edu/ ), a cloud-based data-analysis platform and a public multiple-reaction monitoring (MRM) transition repository for small-molecule quantitative tandem mass spectrometry. This platform provides MRM transitions for more than 15,500 molecules and facilitates data sharing across different instruments and laboratories.

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