COVID-19 and Pregnancy: A Dangerous Mix for Bone Turnover and Metabolism Biomarkers in Placenta and Colostrum.

Background: In pregnant women, COVID-19 can alter the metabolic environment, cell metabolism, and oxygen supply of trophoblastic cells and, therefore, have a negative influence on essential mechanisms of fetal development. The purpose of this study was to investigate, for the first time, the effects of COVID-19 infection during pregnancy with regard to the bone turnover and endocrine function of several metabolic biomarkers in colostrum and placenta. Methods: One hundred and twenty-four pregnant mothers were recruited from three hospitals between June 2020 and August 2021 and assigned to two groups: Control group and COVID-19 group. Metabolism biomarkers were addressed in placental tissue and colostrum. Results: Lipocalin-2 and resistin levels were higher in the placenta, revealing an underlying pro-inflammatory status in the gestation period for mothers suffering from COVID-19; a decrease in GLP-1 and leptin was also observed in this group. As for adiponectin, resistin, and insulin, their concentrations showed an increase; a decrease in GLP-1, leptin, and PYY was also reported in the colostrum of mothers suffering from COVID-19 compared with the control group. Conclusions: As for bone turnover, placental samples from mothers with COVID-19 showed lower levels of OPG, while DKK-1 increased compared with the control group. Colostrum samples showed higher levels of OPG, SOST, and PTH in the COVID-19 group, a fact that could have noteworthy implications for energy metabolism, fetal skeletal development, and postnatal bone density and mineralization. Further research is needed to explain the pathogenic mechanism of COVID-19 that may affect pregnancy, so as to assess the short-term and long-term outcomes in infants' health.

COVID-19 during Gestation: Maternal Implications of Evoked Oxidative Stress and Iron Metabolism Impairment.

COVID-19 has reached pandemic proportions worldwide, with considerable consequences for both health and the economy. In pregnant women, COVID-19 can alter the metabolic environment, iron metabolism, and oxygen supply of trophoblastic cells, and therefore have a negative influence on essential mechanisms of fetal development. The purpose of this study was to investigate, for the first time, the effects of COVID-19 infection during pregnancy with regard to the oxidative/antioxidant status in mothers' serum and placenta, together with placental iron metabolism. Results showed no differences in superoxide dismutase activity and placental antioxidant capacity. However, antioxidant capacity decreased in the serum of infected mothers. Catalase activity decreased in the COVID-19 group, while an increase in 8-hydroxy-2'-deoxyguanosine, hydroperoxides, 15-FT-isoprostanes, and carbonyl groups were recorded in this group. Placental vitamin D, E, and Coenzyme-Q10 also showed to be increased in the COVID-19 group. As for iron-related proteins, an up-regulation of placental DMT1, ferroportin-1, and ferritin expression was recorded in infected women. Due to the potential role of iron metabolism and oxidative stress in placental function and complications, further research is needed to explain the pathogenic mechanism of COVID-19 that may affect pregnancy, so as to assess the short-term and long-term outcomes in mothers' and infants' health.

Impacto de la pandemia por SARS-CoV-2 en un banco de leche humana / Impact of the SARS-CoV-2 pandemic on a human milk bank

Introducción: la pandemia originada por el SARS-CoV-2 provocó la declaración del estado de alarma sanitaria entre marzo y junio de 2020 en España. Los bancos de leche materna han visto afectada su actividad durante este periodo, siendo necesario implementar nuevas medidas para promocionar la donación de leche y disminuir el impacto en la actividad. Método y objetivo: el objetivo del estudio es evaluar el impacto del estado de alarma decretado desde el 14 de marzo al 22 de junio de 2020 en el Banco de Leche del Hospital Virgen de las Nieves de Granada, en comparación con el mismo periodo del año previo. Para ello se ha realizado un estudio descriptivo retrospectivo en el que se han tenido en cuenta los indicadores de actividad del Banco de Leche de forma global y se han comparado los datos del Banco de Leche del Hospital Universitario Virgen de las Nieves, ubicado en Granada, con los datos de los centros periféricos que colaboran con el mismo. Resultados: durante el primer estado de alarma de 2020 hubo una disminución global de las inscripciones de nuevas donantes, del número de donantes que donaron leche, del volumen de donación media por madre y del volumen total de leche cruda recibida y pasteurizada. A pesar de ello, en el banco de leche de Granada aumentaron las nuevas inscripciones durante este periodo, así como el número de donantes que donaron leche. Conclusión: las medidas adoptadas en el banco de leche ubicado en Granada, como incentivar la donación de leche entre las madres con niños ingresados en la Unidad Neonatal, aumentar la información a las madres y recoger la leche donada a domicilio, permitieron atenuar el impacto de la pandemia, garantizando la seguridad. (AU)

Introduction: the pandemic caused by SARS-CoV-2 led to the declaration of the state of sanitary alarm between March and June 2020 in Spain. The activity of human milk banks was affected during that period, making it necessary to implement new measures in order to promote milk donation and diminish said impact. Method and objective: the aim of the study was to evaluate the impact of the state of alarm decreed from March 14 to June 22, 2020 on the breastmilk bank at Hospital Virgen de las Nieves, Granada, Spain, in comparison with the same period during the previous year. To that end, a retrospective descriptive study was undertaken in which the activity indicators of the breastmilk bank were collected and compared to data from the milk bank at Hospital Virgen de las Nieves and peripheral collaborating centers. Results: during the first state of alarm in 2020 a global reduction was seen in new donor registrations, number of donors who donated milk, donated mean volume per mother, and total volume of received and pasteurized milk. However, new registrations and number of donors who donated milk during this period increased in Granada's breastmilk bank. Conclusion: the new measures adopted in the breastmilk bank in Granada, such as encouraging milk donation in mothers with admitted newborns in the Neonatal Unit, increasing information given to mothers, and home collection of donated milk, allowed to attenuate the impact of the pandemic while guaranteeing safety. (AU)

[Impact of the SARS-CoV-2 pandemic on a human milk bank]. / Impacto de la pandemia por SARS-CoV-2 en un banco de leche humana.

INTRODUCTION: Introduction: the pandemic caused by SARS-CoV-2 led to the declaration of the state of sanitary alarm between March and June 2020 in Spain. The activity of human milk banks was affected during that period, making it necessary to implement new measures in order to promote milk donation and diminish said impact. Method and objective: the aim of the study was to evaluate the impact of the state of alarm decreed from March 14 to June 22, 2020 on the breastmilk bank at Hospital Virgen de las Nieves, Granada, Spain, in comparison with the same period during the previous year. To that end, a retrospective descriptive study was undertaken in which the activity indicators of the breastmilk bank were collected and compared to data from the milk bank at Hospital Virgen de las Nieves and peripheral collaborating centers. Results: during the first state of alarm in 2020 a global reduction was seen in new donor registrations, number of donors who donated milk, donated mean volume per mother, and total volume of received and pasteurized milk. However, new registrations and number of donors who donated milk during this period increased in Granada's breastmilk bank. Discussion: the new measures adopted in the breastmilk bank in Granada, such as encouraging milk donation in mothers with admitted newborns in the Neonatal Unit, increasing information given to mothers, and home collection of donated milk, allowed to attenuate the impact of the pandemic while guaranteeing safety.

INTRODUCCIÓN: Introducción: la pandemia originada por el SARS-CoV-2 provocó la declaración del estado de alarma sanitaria entre marzo y junio de 2020 en España. Los bancos de leche materna han visto afectada su actividad durante este periodo, siendo necesario implementar nuevas medidas para promocionar la donación de leche y disminuir el impacto en la actividad. Método y objetivo: el objetivo del estudio es evaluar el impacto del estado de alarma decretado desde el 14 de marzo al 22 de junio de 2020 en el Banco de Leche del Hospital Virgen de las Nieves de Granada, en comparación con el mismo periodo del año previo. Para ello se ha realizado un estudio descriptivo retrospectivo en el que se han tenido en cuenta los indicadores de actividad del Banco de Leche de forma global y se han comparado los datos del Banco de Leche del Hospital Universitario Virgen de las Nieves, ubicado en Granada, con los datos de los centros periféricos que colaboran con el mismo. Resultados: durante el primer estado de alarma de 2020 hubo una disminución global de las inscripciones de nuevas donantes, del número de donantes que donaron leche, del volumen de donación media por madre y del volumen total de leche cruda recibida y pasteurizada. A pesar de ello, en el banco de leche de Granada aumentaron las nuevas inscripciones durante este periodo, así como el número de donantes que donaron leche. Discusión: las medidas adoptadas en el banco de leche ubicado en Granada, como incentivar la donación de leche entre las madres con niños ingresados en la Unidad Neonatal, aumentar la información a las madres y recoger la leche donada a domicilio, permitieron atenuar el impacto de la pandemia, garantizando la seguridad.

Oropharyngeal Colostrum Positively Modulates the Inflammatory Response in Preterm Neonates.

During the first days of life, premature infants have physiological difficulties swallowing, thereby missing out on the benefits of breastfeeding. The aim of this study is to assess the effects of oropharyngeal mother's milk administration in the inflammatory signaling of extremely premature infants. Neonates (n = 100) (<32 week's gestation and/or <1500 g) were divided into two groups: mother's milk group (n = 48), receiving 0.2 mL of oropharyngeal mother's milk every 4 h for the first 15 days of life, and a control group (n = 52), not receiving oropharyngeal mother's milk. Serum concentrations of interleukin (IL) IL-6, IL-8, IL-10, IL-1ra, tumor necrosis factor alpha (TNF-α), and interferón gamma (IFN-γ) were assessed at 1, 3, 15, and 30 days of postnatal life. Maternal and neonatal outcomes were collected. The rate of common neonatal morbidities in both groups was similar. The mother's milk group achieved full enteral feeding earlier, and showed a decrease in Il-6 on days 15 and 30, in IL-8 on day 30, and in TNF-α and INF-γ on day 15, as well as an increase in IL-1ra on days 3 and 15 and in IL-10 on day 30. Oropharyngeal mother's milk administration for 15 days decreases the pro-inflammatory state of preterm neonates and provides full enteral nutrition earlier, which could have a positive influence on the development of the immune system and inflammatory response, thereby positively influencing other developmental outcomes.

Enhancement of immune response mediated by oropharyngeal colostrum administration in preterm neonates.

BACKGROUND: The immune system of preterm infants is immature, being a significant cause of morbidity and mortality, particularly in the preterm infant. Oropharyngeal colostrum administration could be an immunomodulatory aid. Our aim was to evaluate the effect of oropharyngeal colostrum on the serum levels of immunoglobulins, lactoferrin, and resistin during the first month of life and to track the clinical outcome of the neonates. METHODS: One hundred preterm neonates born at <32 weeks of gestation and/or weighing < 1500 g and assisted in the Neonatal Intensive Care Unit were enrolled and divided into two groups: colostrum (n = 48) and control (n = 52). The subjects assigned to the colostrum group received 0.2 mL of colostrum (oropharyngeal route) every 4 hours for the first 15 days of life, and if mothers have inability to breastfeed, they were included in the control group (no oropharyngeal colostrum). Serum concentrations of IgA, IgM, and IgG1, lactoferrin, and resistin were assessed in both groups at 1, 3, 15, and 30 days of life. Clinical data during hospitalization were collected. RESULTS: IgA and IgM increased in preterm neonates who were administered colostrum for 15 and 30 days. Lactoferrin increased after 30 days, and resistin increased after 15 days of supplying oropharyngeal colostrum. The colostrum group underwent full enteral nutrition before, and no differences were observed in the common neonatal morbidities. CONCLUSION: Oropharyngeal colostrum administration is safe in preterm neonates and improves their immunologic profile, showing a potential role as an immunomodulatory agent.

Omega-3 LCPUFA supplement: a nutritional strategy to prevent maternal and neonatal oxidative stress.

There is controversy about fish-oil supplementation and oxidative damage. This ambiguity should be explored to elucidate its role as modulator of oxidative stress, especially during gestation and postnatal life. This is the objective of this study. One hundred ten pregnant women were divided in two groups: control group CT (400 mL/day of the control dairy drink); supplemented group FO (400 mL/day of the fish oil-enriched dairy drink (±400-mg EPA-DHA/day)). Different biomarkers of oxidative damage were determined in the mother's at enrolment, at delivery and at 2.5 and 4 months postpartum and newborns at delivery and at 2.5 months postpartum. Omega-3 LC-PUFA supplementation during pregnancy and lactation decreased plasma hydroperoxides especially in newborn at delivery (P = 0.001) and 2.5 months (P = 0.006), increased superoxide dismutase (SOD) and catalase (CAT) in mothers at delivery (P = 0.024 (SOD)) and after 2.5 months (P = 0.040 (CAT)) and in newborns at 2.5 months (P = 0.035 (SOD); P = 0.021 (CAT)). Also, supplementation increased α-tocoferol in mothers at 2.5 months (P = 0.030) and in umbilical cord artery (P = 0.039). Higher levels of CoQ10 were found in mothers at delivery (P = 0.039) as well as in umbilical cord vein (P = 0.024) and artery (P = 0.036). Our supplementation prevents the oxidative stress in the mother and neonate during the first months of postnatal life, being a potential preventive nutritional strategy to prevent functional alterations associated with oxidative stress that have an important repercussion for the neonate development in the early postnatal life.

Efectos de la administración de calostro orofaríngeo en recién nacidos prematuros sobre los niveles de inmunoglobulina A.

Introducción: el recién nacido prematuro de muy bajo peso (RNMBP) es inmunológicamente inmaduro y además presenta una alteración de las barreras naturales de defensa. Objetivo: evaluar los efectos que pueda tener la administración de calostro orofaríngeo, administrado durante los primeros 15 días posnatales, sobre los niveles de inmunoglobulina A (IgA) sérica en recién nacidos prematuros de muy bajo peso durante el primer mes de vida. Material y métodos: se desarrolló un estudio de intervención no aleatorizado con grupo control, en el que se incluyeron 38 recién nacidos con ≤ 32 + 6 semanas de gestación y/o menores de 1.500 g de peso. Los sujetos recibieron 0,2 ml de calostro de su madre cada 4 h, iniciándose el procedimiento en las primeras 24 h de vida hasta el 15.o día postnatal. Se midieron los niveles de IgA en la sangre al nacimiento, 3. er , 15.o y 30.o días de vida. Se registraron datos perinatales al nacimiento y durante el periodo de seguimiento. Resultados: IgA sérica aumentó de forma estadísticamente significativa en el grupo de intervención (M1 15,84 µg/ml, M2 20,07 µg/ml, M3 23,65 µg/ml, M4 30,34 µg/ml, p 0,001) y en el grupo control (M1 12,48 µg/ml, M2 16,48 µg/ml, p 0,018; M3 19,41 µg/ml, M4 22,48 µg/ml, p 0,001). Al mes de vida, los niveles de IgA sérica fueron significativamente mayores en el grupo de intervención que en el grupo control (p 0,026). Conclusiones: este estudio sugiere que la administración de calostro orofarínge.

Efectos de la administración de calostro orofaríngeo en recién nacidos prematuros sobre los niveles de inmunoglobulina A / Effect of oropharyngeal colostrum administration on immunoglobulin A levels in preterm newborns

Introducción: el recién nacido prematuro de muy bajo peso (RNMBP) es inmunológicamente inmaduro y además presenta una alteración de las barreras naturales de defensa. Objetivo: evaluar los efectos que pueda tener la administración de calostro orofaríngeo, administrado durante los primeros 15 días posnatales, sobre los niveles de inmunoglobulina A (IgA) sérica en recién nacidos prematuros de muy bajo peso durante el primer mes de vida. Material y métodos: se desarrolló un estudio de intervención no aleatorizado con grupo control, en el que se incluyeron 38 recién nacidos con ≤ 32 + 6 semanas de gestación y/o menores de 1.500 g de peso. Los sujetos recibieron 0,2 ml de calostro de su madre cada 4 h, iniciándose el procedimiento en las primeras 24 h de vida hasta el 15.º día postnatal. Se midieron los niveles de IgA en la sangre al nacimiento, 3.er, 15.º y 30.º días de vida. Se registraron datos perinatales al nacimiento y durante el periodo de seguimiento. Resultados: IgA sérica aumentó de forma estadísticamente significativa en el grupo de intervención (M1 15,84 µg/ml, M2 20,07 µg/ml, M3 23,65 µg/ml, M4 30,34 µg/ml, p 0,001) y en el grupo control (M1 12,48 µg/ml, M2 16,48 µg/ml, p 0,018; M3 19,41 µg/ml, M4 22,48 µg/ml, p 0,001). Al mes de vida, los niveles de IgA sérica fueron significativamente mayores en el grupo de intervención que en el grupo control (p 0,026). Conclusiones: este estudio sugiere que la administración de calostro orofaríngeo favorecería el desarrollo del sistema inmunológico de los recién nacidos prematuros y RNMBP a través del aumento de IgA al mes de vida (AU)

Introduction: Very low birth weight (VLBW) newborns have an immature immune system and also disrupted defense natural barriers. Objective: To evaluate the immunologic effects of oropharyngeal colostrum administration to VLBW infants in their first two weeks of life, by assessing IgA serum levels evolution up to one month of life. Material and methods: We conducted an interventional, no randomized, controlled trial recruiting 38 newborns under ≤ 32 + 6 gestational weeks and/or under 1,500 g at birth. Subjects received 0,2 ml of their mother colostrum every 4 hours, starting in the first 24 hours of life, and for a 15 days period. IgA serum levels were measured at birth, 3, 15 and 30 days of life. Perinatal data for the first month of life were registered. Results: Along the first month of life an increase in IgA levels was found in colostrum group (M1 15.84 µg/ml, M2 20.07 µg/ml, M3 23.65 µg ml, M4 30.34 µg/ml, p 0.001) and in control group (M1 12.48 µg/ml, M2 16.48 µg/ml, p 0.018; M3 19.41 µg/ml, M4 22.48 µg/ml, p 0.001). IgA serum levels were statistically increased in colostrum group, in respect to control group at one month of age (p 0.026). Conclusions: Our data suggest that oropharyngeal colostrum administration might facilitate the development of immune system in VLWB infants at one month of age, by increasing IgA serum levels (AU)