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Veterinary Research Communications Jun 2022Mastitis is one of the most impacting diseases in dairy farming, and its sensitive and specific detection is therefore of the greatest importance. The clinical... (Review)
Review
Mastitis is one of the most impacting diseases in dairy farming, and its sensitive and specific detection is therefore of the greatest importance. The clinical evaluation of udder and mammary secretions is typically combined with the milk Somatic Cell Count (SCC) and often accompanied by its bacteriological culture to identify the causative microorganism. In a constant search for improvement, several non-enzymatic milk proteins, including milk amyloid A (M-SAA), haptoglobin (HP), cathelicidin (CATH), and lactoferrin (LF), have been investigated as alternative biomarkers of mastitis for their relationship with mammary gland inflammation, and immunoassay techniques have been developed for detection with varying degrees of success. To provide a general overview of their implementation in the different dairy species, we carried out a systematic review of the scientific literature using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines. Our review question falls within the type "Diagnostic test accuracy questions" and aims at answering the diagnostic question: "Which are the diagnostic performances of mastitis protein biomarkers investigated by immunoassays in ruminant milk?". Based on 13 keywords combined into 42 searches, 523 manuscripts were extracted from three scientific databases. Of these, 33 passed the duplicate removal, title, abstract, and full-text screening for conformity to the review question and document type: 78.8% investigated cows, 12.1% sheep, 9.1% goats, and 6.1% buffaloes (some included more than one dairy species). The most frequently mentioned protein was M-SAA (48.5%), followed by HP (27.3%), CATH (24.2%) and LF (21.2%). However, the large amount of heterogeneity among studies in terms of animal selection criteria (45.5%), index test (87.9%), and standard reference test (27.3%) resulted in a collection of data not amenable to meta-analysis, a common finding illustrating how important it is for case definitions and other criteria to be standardized between studies. Therefore, results are presented according to the SWiM (Synthesis Without Meta-analysis) guidelines. We summarize the main findings reported in the 33 selected articles for the different markers and report their results in form of comparative tables including sample selection criteria, marker values, and diagnostic performances, where available. Finally, we report the study limitations and bias assessment findings.
Topics: Animals; Biomarkers; Cattle; Cattle Diseases; Cell Count; Female; Goat Diseases; Goats; Haptoglobins; Mammary Glands, Animal; Mastitis, Bovine; Milk; Milk Proteins; Serum Amyloid A Protein; Sheep; Sheep Diseases
PubMed: 35195874
DOI: 10.1007/s11259-022-09901-y -
Journal of Equine Veterinary Science Aug 2022In addition to providing individualized, specific, and ample nutritional compounds, donkey milk (DM) offers immunological modulation during health and disease. Recently,... (Review)
Review
In addition to providing individualized, specific, and ample nutritional compounds, donkey milk (DM) offers immunological modulation during health and disease. Recently, DM has attracted major interest in preparing infant formulas due to its similarity to human milk in terms of high protein and lactose content and low-fat concentration. The antimicrobial, anti-inflammation, antioxidant, and hypo-allergenicity properties of DM in human infants are well-documented. The purpose of this review is to summarize the knowledge of studies done in characterizing the composition of DM, including bioactive macronutrient levels influenced by the lactation status. The manufacture of DM-based food products and promising therapeutic applications in humans will also be discussed. The beneficial health effects of DM have been extensively studied as a valuable alternative source to breast milk. DM has proven to be a suitable nutrient to relieve milk-related allergies in human infants as opposed to cow's milk. Factors that influence the levels of macronutrients in DM include lactation status, processing, and manufacturing techniques. A wide variety of dairy products have been prepared using DM, such as cheese, ice cream, milk powder, novel functional fermented beverages, and milk powder for infant formulas. The bioactive macromolecules of DM exhibit antibacterial, antiviral, and antifungal effects as well as hypo-allergenicity, anti-inflammation, and antioxidant properties.
Topics: Allergens; Animals; Antioxidants; Cattle; Cattle Diseases; Equidae; Female; Humans; Milk Hypersensitivity; Milk, Human; Powders
PubMed: 35526725
DOI: 10.1016/j.jevs.2022.104006 -
Archives of Disease in Childhood. Fetal... Mar 2022Synthesise evidence on production of SARS-CoV-2 antibodies in human milk of individuals who had COVID-19, and antibodies' ability to neutralise SARS-CoV-2 infectivity.
OBJECTIVE
Synthesise evidence on production of SARS-CoV-2 antibodies in human milk of individuals who had COVID-19, and antibodies' ability to neutralise SARS-CoV-2 infectivity.
DESIGN
A systematic review of studies published from 1 December 2019 to 16 February 2021 without study design restrictions.
SETTING
Data were sourced from PubMed, MEDLINE, Embase, CNKI, CINAHL and WHO COVID-19 database. Search was also performed through reviewing references of selected articles, Google Scholar and preprint servers. Studies that tested human milk for antibodies to SARS-CoV-2 were included.
PATIENTS
Individuals with COVID-19 infection and human milk tested for anti-SARS-CoV-2 neutralising antibodies.
MAIN OUTCOME MEASURES
The presence of neutralising antibodies in milk samples provided by individuals with COVID-19 infection.
RESULTS
Individual participant data from 161 persons (14 studies) were extracted and re-pooled. Milk from 133 (82.6%) individuals demonstrated the presence of anti-SARS-CoV-2 immunoglobulin A (IgA), IgM and/or IgG. Illness severity data were available in 146 individuals; 5 (3.4%) had severe disease, 128 (87.7%) had mild disease, while 13 (8.9%) were asymptomatic. Presence of neutralising antibodies in milk from 20 (41.7%) of 48 individuals neutralised SARS-CoV-2 infectivity in vitro. Neutralising capacity of antibodies was lost after Holder pasteurisation but preserved after high-pressure pasteurisation.
CONCLUSION
Human milk of lactating individuals after COVID-19 infection contains anti-SARS-CoV-2-specific IgG, IgM and/or IgA, even after mild or asymptomatic infection. Current evidence demonstrates that these antibodies can neutralise SARS-CoV-2 virus in vitro. Holder pasteurisation deactivates SARS-CoV-2-specific IgA, while high-pressure pasteurisation preserves the SARS-CoV-2-specific IgA function.
Topics: Antibodies, Viral; COVID-19; Humans; Immunoglobulins; Milk, Human; Patient Acuity; SARS-CoV-2
PubMed: 34257103
DOI: 10.1136/archdischild-2021-322156 -
Nutrients Aug 2019Breast milk is characterized by a dynamic and complex composition which includes hormones and other bioactive components that could influence infant growth, development,...
Breast milk is characterized by a dynamic and complex composition which includes hormones and other bioactive components that could influence infant growth, development, and optimize health. Among the several beneficial effects associated with prolonged breastfeeding, a 13% decrease in the risk of overweight and obesity has been reported. Recent research has focused on breast milk hormones contributing to the appetite and energy balance regulation and adiposity. Accordingly, we conducted a literature systematic review with the aim to provide an update on the effect of leptin, ghrelin, Insulin Growth Factor 1, adiponectin, and insulin on infants' and children's growth and body composition. The revised literature reveals contrasting findings concerning the potential role of all these hormones on modeling growth and fat mass apposition and health outcomes later in life. Further studies are needed to gain further insight into the specific role of these bioactive components in metabolic pathways related to body composition. This could help gain a further insight on infants' growth, both in physiological and pathological settings.
Topics: Child Development; Female; Hormones; Humans; Infant; Milk, Human
PubMed: 31395844
DOI: 10.3390/nu11081845 -
Midwifery Mar 2023To conduct a systematic review on the effects of freezing and thawing mature human milk at -18 to -20°C for different periods of time on the macronutrients,...
OBJECTIVE
To conduct a systematic review on the effects of freezing and thawing mature human milk at -18 to -20°C for different periods of time on the macronutrients, micronutrients and bioactive content of milk.
DESIGN
Before starting the research, the study protocol was recorded in the 'PROSPERO' database. Eleven databases were searched, and eight studies were included in this review. The articles were published between January 2010 and June 2020.
MEASUREMENTS AND FINDINGS
Total protein content increased when milk was frozen for 2 days, but this decreased significantly when milk was frozen for >1 week. Total carbohydrate content also increased when milk was frozen for 2 days, and no significant change was observed when milk was frozen for >1 week. Energy content decreased when milk was frozen for >8 weeks. Total fat content decreased as the freezing period of milk increased, and total free fatty acid content increased. Thirty days of freezing led to a non-significant decrease in the vitamin E content of milk. Freezing did not lead to changes in immunological factors in human milk, but decreases in glutathione peroxidase, antioxidant capacity and lactoferrin were observed.
KEY CONCLUSIONS
In order to maintain the nutritional and immunological properties of human milk after freezing and thawing, families, especially mothers, should be informed about the effects of storing milk this way. After expressing milk, it is recommended that the date should be written on the freezer bag, so that milk is frozen for a shorter period of time before use.
Topics: Female; Humans; Milk, Human; Freezing; Mothers
PubMed: 36641969
DOI: 10.1016/j.midw.2022.103519 -
Pediatrics Aug 2022We assessed the effect of feeding preterm or low birth weight infants with infant formula compared with mother's own milk on mortality, morbidity, growth,... (Meta-Analysis)
Meta-Analysis
OBJECTIVES
We assessed the effect of feeding preterm or low birth weight infants with infant formula compared with mother's own milk on mortality, morbidity, growth, neurodevelopment, and disability.
METHODS
We searched Medline (Ovid), Embase (Ovid), and Cochrane Central Register of Controlled Studies to October 1, 2021.
RESULTS
Forty-two studies enrolling 89 638 infants fulfilled the inclusion criteria. We did not find evidence of an effect on mortality (odds ratio [OR] 1.26, 95% confidence interval [CI] 0.91-1.76), infection (OR 1.52, 95% CI 0.98-2.37), cognitive neurodevelopment (standardized mean difference -1.30, 95% CI -3.53 to 0.93), or on growth parameters. Formula milk feeding increased the risk of necrotizing enterocolitis (OR 2.99, 95% CI 1.75-5.11). The Grading of Recommendations Assessment, Development, and Evaluation certainty of evidence was low for mortality and necrotizing enterocolitis, and very low for neurodevelopment and growth outcomes.
CONCLUSIONS
In preterm and low birth weight infants, low to very low-certainty evidence indicates that feeding with infant formula compared with mother's own milk has little effect on all-cause mortality, infection, growth, or neurodevelopment, and a higher risk of developing necrotizing enterocolitis.
Topics: Enterocolitis, Necrotizing; Female; Humans; Infant; Infant Formula; Infant Nutritional Physiological Phenomena; Infant, Low Birth Weight; Infant, Newborn; Infant, Premature; Milk, Human; Mothers
PubMed: 35921674
DOI: 10.1542/peds.2022-057092D -
BMC Public Health Jul 2012Micronutrient deficiency is a common public health problem in developing countries, especially for infants and children in the first two years of life. As this is an... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Micronutrient deficiency is a common public health problem in developing countries, especially for infants and children in the first two years of life. As this is an important time window for child development, micronutrient fortified complementary feeding after 6 months of age, for example with milk or cereals products, in combination with continued breastfeeding, is recommended. The overall effect of this approach is unclear.
METHODS
We performed a Systematic Review and Meta-analysis to assess the impact of micronutrient fortified milk and cereal food on the health of infants and little children (aged 6 months to 5 years) compared to non-fortified food. We reviewed randomized controlled trials using electronic databases (MEDLINE and Cochrane library searches through FEB 2011), reference list screening and hand searches. Three reviewers assessed 1153 studies for eligibility and extracted data. One reviewer assessed risk of bias using predefined forms.
RESULTS
We included 18 trials in our analysis (n = 5'468 children; range of mean hemoglobin values: 9.0 to 12.6 g/dl). Iron plus multi micronutrient fortification is more effective than single iron fortification for hematologic outcomes. Compared to non-fortified food, iron multi micronutrient fortification increases hemoglobin levels by 0.87 g/dl (95%-CI: 0.57 to 1.16; 8 studies) and reduces risk of anemia by 57% (relative risk 0.43; 95%-CI 0.26 to 0.71; absolute risk reduction 22%; number needed to treat 5 [95%-CI: 4 to 6]; 6 Studies). Compared to non-fortified food, fortification increases serum levels of vitamin A but not of zinc. Information about functional health outcomes (e.g. weight gain) and morbidity was scarce and evidence is inconclusive. Risk of bias is unclear due to underreporting, but high quality studies lead to similar results in a sensitivity analysis.
CONCLUSIONS
Multi micronutrient fortified milk and cereal products can be an effective option to reduce anemia of children up to three years of age in developing countries. On the basis of our data the evidence for functional health outcomes is still inconclusive.
Topics: Animals; Child Nutritional Physiological Phenomena; Child, Preschool; Edible Grain; Food, Fortified; Humans; Infant; Infant Nutritional Physiological Phenomena; Micronutrients; Milk; Randomized Controlled Trials as Topic
PubMed: 22770558
DOI: 10.1186/1471-2458-12-506 -
Breastfeeding Medicine : the Official... Jul 2021To evaluate the efficacy and safety of domperidone and metoclopramide used by breastfeeding women. A systematic literature search retrieved citations from PubMed,... (Meta-Analysis)
Meta-Analysis
To evaluate the efficacy and safety of domperidone and metoclopramide used by breastfeeding women. A systematic literature search retrieved citations from PubMed, Embase, The Cochrane Library, Medline, EBSCO, Web of Science, ClinicalTrials.gov (from inception to January, 2021) and bibliographies of known articles. Randomized controlled trials exploring the effects of domperidone and metoclopramide in breastfeeding women with term and preterm infants experiencing adequate or low milk supply were identified. Human milk volume and maternal side effects were presented as mean difference (MD) or relative risks (RR) with 95% confidence intervals (CI). Sixteen trials involving 729 women were included in the qualitative analysis and 14 trials involving 607 women were included in the meta-analysis. In mothers of preterm infants with low milk supply, domperidone demonstrated a significant increase in daily human milk volume (MD = 90.53 mL/day, 95% CI [65.42 to 115.64], = 9%). However, metoclopramide did not show significant difference in daily human milk volume in women with preterm infants (MD = -1.14 mL/day, 95% CI [-31.42 to 29.14], = 0%). No differences in maternal side effects were noted with domperidone (RR = 1.20, 95% CI [0.74 to 1.97], = 0%) or metoclopramide (RR = 1.05, 95% CI [0.52 to 2.11], = 27%) in women with preterm infants. Regarding the women with term infants, there were insufficient data in the current review. Domperidone can be used to treat low milk supply in women with preterm infants without significant side effects based on the current review. More evidence exploring the efficacy and safety of domperidone and metoclopramide are still needed for breastfeeding women in the future.
Topics: Breast Feeding; Domperidone; Female; Humans; Infant; Infant, Newborn; Infant, Premature; Metoclopramide; Milk, Human
PubMed: 33769844
DOI: 10.1089/bfm.2020.0360 -
Reviews on Environmental Health 2010Lead (Pb), a naturally-occurring element and industrially-produced metal, is highly toxic to children, causing intellectual and behavioral deficits, hyperactivity, fine... (Review)
Review
Lead (Pb), a naturally-occurring element and industrially-produced metal, is highly toxic to children, causing intellectual and behavioral deficits, hyperactivity, fine motor function deficits, decreased intelligence quotient, alteration of hand-eye coordination, and problems in reaction time. Children's exposure to Pb occurs mainly through ingestion of contaminated food, water and soil. Few discussions have been held on the magnitude and potential risk associated with exposure from the consumption of breast milk. Hence, this research was designed to systematically review the scientific literature on published epidemiologic studies, with an emphasis on the study designs and analytical procedures used for Pb assessment in breast milk. From a total of 112 selected articles published since the 1980s, 11 met the inclusion criteria. A review of the data indicated that Pb levels varied from 0.15 to 6.1 microg L(-1) in mature milk samples, from 0.48 to 14.6 microg L(-1) in colostrum samples, and were non-detectable in some samples. The milk/blood ratio, which estimates the mean efficiency transfer of lead from blood to milk, varied between 0.01 and 0.48. The heterogeneity of methods revealed by our assessment of published studies underscores the need for harmonization of study designs and sample collection and analysis protocols to reflect specific exposure scenarios. Human milk seems to be one of the relevant biological matrices for use as a biomarker for assessing children's health risk to Pb poisoning.
Topics: Biomarkers; Breast Feeding; Colostrum; Environmental Exposure; Female; Humans; Infant; Lead; Lead Poisoning; Milk, Human
PubMed: 21038758
DOI: 10.1515/reveh.2010.25.3.243 -
Critical Reviews in Food Science and... 2024Polar lipids including glycerophospholipids and sphingophospholipids are important nutrients and milk is a major source, particularly for infants. This systematic review...
Polar lipids including glycerophospholipids and sphingophospholipids are important nutrients and milk is a major source, particularly for infants. This systematic review describes the human and bovine milk polar lipid composition, structural organization, sources for formulation, and physiological functionality. A total of 2840 records were retrieved through Scopus, 378 were included. Bovine milk is a good source of polar lipids, where yield and composition are highly dependent on the choice of dairy streams and processing. In milk, polar lipids are organized in the milk fat globule membrane as a tri-layer encapsulating triglyceride. The overall polar lipid concentration in human milk is dependent on many factors including lactational stage and maternal diet. Here, reasonable ranges were determined where possible. Similar for bovine milk, where differences in milk lipid concentration proved the largest factor determining variation. The role of milk polar lipids in human health has been demonstrated in several areas and critical review indicated that brain, immune and effects on lipid metabolism are best substantiated areas. Moreover, insights related to the milk fat globule membrane structure-function relation as well as superior activity of milk derived polar lipid compared to plant-derived sources are emerging areas of interest regarding future research and food innovations.
Topics: Humans; Infant; Female; Glycolipids; Milk, Human; Lactation; Triglycerides; Diet
PubMed: 35997253
DOI: 10.1080/10408398.2022.2104211