Detection of TT Virus DNA and GB Virus Type C/Hepatitis G Virus RNA in Serum and Breast Milk: Determination of Mother-to-Child Transmission

To investigate the vertical transmission of the newly described TT virus (TTV), serum and breast milk samples from 46 women as well as sera from their 47 newborns were examined for the presence of TTV DNA by PCR. TTV DNA was detected in 47.8% (n = 22) of the women. All but one child born to these women were also viremic for TTV from the first sample onward. TTV DNA was found in 73.9% (n = 17) of the breast milk samples derived from TTV viremic mothers. The one TTV-negative child born to a viremic mother remained negative during follow-up, although it was breast-fed. Our data show that TTV is highly effectively transmitted from mothers to their children during pregnancy. Although the majority of breast milk samples from viremic mothers are positive by TTV PCR, there is no need to discourage women from breast-feeding, because most children are TTV viremic even before breast-feeding begins.

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Safety of Breastfeeding in Mothers with SARS-CoV-2 Infection

10.1101/2020.05.30.20033407 ◽

2020 ◽

Author(s):

Qingqing Luo ◽

Lan Chen ◽

Dujuan Yao ◽

Jianwen Zhu ◽

Xiangzhi Zeng ◽

...

Keyword(s):

Breast Milk ◽

Antibody Test ◽

Maternal Blood ◽

Child Transmission ◽

Limited Evidence ◽

Third Trimester ◽

Milk Samples ◽

Mother To Child ◽

Negative Conclusion

Background: The outbreak of Coronavirus Disease 2019 (COVID-19) is threatening a surging number of populations worldwide, including women in breastfeeding period. Limited evidence is available concerning breastfeeding in women with COVID-19. Methods: Twenty-three pregnant women and puerperae were enrolled in the study. To evaluate the effect of breastfeeding on SARS-CoV-2 transmission, the presence of SARS-CoV-2, IgG and IgM in breast milk, maternal blood and infant blood were assessed. Feeding patterns were also recorded in follow-up. Results: No positive detection for SARS-CoV-2 of neonates was found. All breast milk samples were negative for the detection of SARS-CoV-2. The presence of IgM ofSARS-CoV-2 in breast milk was correlated with maternal blood. The results of IgG detection for SARS-CoV-2 were negative in all breast milk samples. All the infants were in healthy condition while six of them were fed with whole or partial breast milk. Eight infants received antibody test for SARS-CoV-2 in one month after birth and the results were all negative. Conclusion: Findings from this small number of cases suggest that there is currently no evidence for mother-to-child transmission via breast feeding in women with COVID-19 in the third trimester and puerperium.

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Update on the Transmission of Zika Virus Through Breast Milk and Breastfeeding: A Systematic Review of the Evidence

Viruses ◽

10.3390/v13010123 ◽

2021 ◽

Vol 13 (1) ◽

pp. 123

Author(s):

Elizabeth Centeno-Tablante ◽

Melisa Medina-Rivera ◽

Julia L. Finkelstein ◽

Heather S. Herman ◽

Pura Rayco-Solon ◽

...

Keyword(s):

Breast Milk ◽

Zika Virus ◽

Mother To Child Transmission ◽

Inclusion Criteria ◽

Rt Pcr ◽

Child Transmission ◽

Zikv Infection ◽

Milk Samples ◽

Clinical Complications ◽

Mother To Child

We systematically searched regional and international databases and screened 1658 non-duplicate records describing women with suspected or confirmed ZIKV infection, intending to breastfeed or give breast milk to an infant to examine the potential of mother-to-child transmission of Zika virus (ZIKV) through breast milk or breastfeeding-related practices. Fourteen studies met our inclusion criteria and inform this analysis. These studies reported on 97 mother–children pairs who provided breast milk for ZIKV assessment. Seventeen breast milk samples from different women were found positive for ZIKV via RT-PCR, and ZIKV replication was found in cell cultures from five out of seven breast milk samples from different women. Only three out of six infants who had ZIKV infection were breastfed, no evidence of clinical complications was found to be associated with ZIKV RNA in breast milk. This review updates our previous report by including 12 new articles, in which we found no evidence of ZIKV mother-to-child transmission through breast milk intake or breastfeeding. As the certainty of the present evidence is low, additional studies are still warranted to determine if ZIKV can be transmitted through breastfeeding.

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Determining the Actual Zinc and Iron Intakes in Breastfed Infants: Protocol for a Longitudinal Observational Study

JMIR Research Protocols ◽

10.2196/19119 ◽

2020 ◽

Vol 9 (11) ◽

pp. e19119

Author(s):

Oraporn Dumrongwongsiri ◽

Pattanee Winichagoon ◽

Nalinee Chongviriyaphan ◽

Umaporn Suthutvoravut ◽

Veit Grote ◽

...

Keyword(s):

Breast Milk ◽

Pregnant Women ◽

Iron Status ◽

Deuterium Oxide ◽

Nutrient Status ◽

Dietary Intakes ◽

Breastfed Infants ◽

Milk Samples ◽

Longitudinal Observational Study

Background Zinc and iron deficiencies among breastfed infants during the first 6 months of life have been reported in previous studies. The amounts of zinc and iron intakes from breast milk are factors that contribute to the zinc and iron status of breastfed infants. Objective This study aims to quantitatively determine zinc and iron intakes by breastfed infants during the first 4 months of life and to investigate the factors that predict zinc and iron status in breastfed infants. Methods Pregnant women at 28 to 34 weeks of gestation were enrolled. Zinc and iron status during pregnancy was assessed. At delivery, cord blood was analyzed for zinc and iron levels. Participants and their babies were followed at 2 and 4 months postpartum. Maternal dietary intakes and anthropometric measurements were performed. The amount of breast milk intake was assessed using the deuterium oxide dose-to-mother technique. Breast milk samples were collected for determination of zinc and iron levels. The amount of zinc and iron consumed by infants was calculated. Zinc and iron status was determined in mothers and infants at 4 months postpartum. Results A total of 120 pregnant women were enrolled, and 80 mother-infant pairs completed the study (56 provided full breastfeeding, and 24 provided breast milk with infant formula). All data are being managed and cleaned. Statistical analysis will be done. Conclusions This study will provide information on zinc and iron intakes in exclusively breastfed infants during the first 4 months of life and explore predictive factors and the possible association of zinc and iron intakes with infant growth and nutrient status. International Registered Report Identifier (IRRID) DERR1-10.2196/19119

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Natural history of the TT virus infection through follow-up of TTV DNA–positive multiple-transfused patients

Blood ◽

10.1182/blood.v95.1.347 ◽

2000 ◽

Vol 95 (1) ◽

pp. 347-351 ◽

Cited By ~ 44

Author(s):

Jean-Jacques Lefrère ◽

Françoise Roudot-Thoraval ◽

François Lefrère ◽

Alain Kanfer ◽

Martine Mariotti ◽

...

Keyword(s):

Natural History ◽

Rna Virus ◽

Elevated Serum ◽

Cross Sectional Study ◽

Cross Sectional ◽

Hepatitis G Virus ◽

Tt Virus ◽

Parenteral Transmission ◽

Virus C

Abstract Little is known about the natural history and the pathogenicity of the TT virus (TTV). We present our findings of a cross-sectional study based on the TTV DNA screening of 173 multiple-transfused patients and a longitudinal study based on the follow-up of TTV DNA–positive patients. Overall, 48 patients (27.7%) tested positive for TTV DNA. The influence of the number of blood donor exposures on the prevalence of blood-borne viral infection indicates that TTV, hepatitis C virus (HCV), and an RNA virus known as GB virus C/hepatitis G virus (GBV-C/HGV) share a parenteral transmission, but that TTV, in contrast to the 2 other viruses, is also transmitted by at least another efficient means. The patients having a well-defined date of TTV infection were positive for TTV DNA during a mean period of 3.1 years. A chronic infection was observed in 31 cases (86%). TTV carriage appeared clinically benign in all patients. No clinical evidence of a disease potentially linked to the TTV infection was observed in patients with TTV DNA carriage over several years. The majority of TTV carriers had no biochemical evidence of liver disease. The prevalence of elevated serum alanine aminotransferase (ALT) level was higher in the TTV DNA–positive group, even in the absence of HCV infection, but the observed peaks of ALT level were most often transient and very mild. The prevalence of TTV DNA observed in blood recipients is consistent with that of TTV infection observed in blood donors. TTV infection frequently tends to persist. (Blood. 2000;95:347-351)

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Comparison of DAD and FLD Detection for Identification of Selected Bisphenols in Human Breast Milk Samples and Their Quantitative Analysis by LC-MS/MS

Journal of AOAC International ◽

10.1093/jaoacint/qsaa027 ◽

2020 ◽

Vol 103 (4) ◽

pp. 1029-1042

Author(s):

Tomasz Tuzimski ◽

Szymon Szubartowski ◽

Renata Gadzała-Kopciuch ◽

Andrzej Miturski ◽

Monika Wójtowicz-Marzec ◽

...

Keyword(s):

Breast Milk ◽

Solid Phase ◽

Array Detector ◽

Human Breast Milk ◽

Human Breast ◽

Bisphenol S ◽

Fluorescence Detector ◽

Detection Techniques ◽

Milk Samples

Abstract Background Determination of bisphenols released from packaging material is undoubtedly a difficult and tricky task, requiring the chemical analyst to develop an individual approach to obtain reliable analytical information. Objective QuECHERS (Quick, Easy, Cheap, Effective, Rugged, and Safe)/dispersive solid-phase extraction (d-SPE) technique and high performance liquid chromatography (HPLC) coupled with modern detection techniques such as diode-array detector (DAD), ﬂuorescence detector (FLD) or tandem mass spectrometry (MS/MS) for the determination of bisphenols such as bisphenol A (BPA), bisphenol S (BPS), bisphenol F (BPF), bisphenol B (BPB), 2-[[4-[2-[4-(Oxiran-2-ylmethoxy)phenyl]propan-2yl]phenoxy] methyl]oxirane (BADGE), 3-[4-[2-[4-(Oxiran-2-ylmethoxy)phenyl]propan-2-yl]phenoxy]propane-1,2-diol (BADGE*H2O), 3-[4-[2-[4-(2,3-Dihydroxypropoxy)phenyl]propan-2-yl]phenoxy]propane-1,2-diol (BADGE*2H2O), 1-Chloro-3-[4-[2-[4-(3-chloro-2-hydroxypropoxy)phenyl] propan-2-yl]phenoxy]propan-2-ol (BADGE*2HCl) in human breast milk samples have been performed. Methods For the analysis of total analytes, prior to the extraction with acetonitrile, a deconjugation step was implemented in a tube by adding 1 mL of the enzymatic solution with the β-Glucuronidase to 5 mL of sample. The mix was homogenized and incubated for 17 h at 37°C. Ten milliliters of acetonitrile, and a QuEChERS salt packet with 4 g anhydrous MgSO4 and 1 g NaCl were added. During the d-SPE step the extract was transferred into tube with 30 mg Z-Sep and 50 mg PSA (and also 150 mg MgSO4 for LC-MS/MS analysis). MeOH–water (20:80, v/v) were added to the dry residue and the extract was reconstituted in 150 µL (25-fold analytes pre-concentration is achieved). Next bisphenols were identified by HPLC-DAD-FLD and quantified by LC-MS/MS equipment. Conclusions During the bisphenols HPLC-DAD-FLD analysis, from 6 min a reinforcement of 15 was used, which allowed analytes to be identified at 750 pg/mL. Application of LC-MS/MS allowed quantification of bisphenols in the range from 2.12 to 116.22 ng/mL in a total 27 human breast milk samples. Highlights First QuEChERS/d-SPE coupled with HPLC-DAD-FLD or LC-MS/MS method for the quantification of bisphenols and its analogues in breast milk Faster and cheaper alternative to traditional extraction methods The method was applied for the first biomonitoring of bisphenols and its analogues in breast milk.

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Breast Milk and Breastfeeding of Infants Born to SARS-CoV-2 Positive Mothers: A Prospective Observational Cohort Study

American Journal of Perinatology ◽

10.1055/s-0041-1731451 ◽

2021 ◽

Author(s):

Bgee Kunjumon ◽

Elena V. Wachtel ◽

Rishi Lumba ◽

Michelle Quan ◽

Juan Remon ◽

...

Keyword(s):

Cohort Study ◽

Breast Milk ◽

World Health ◽

Nasopharyngeal Swab ◽

Published Data ◽

New York University ◽

Positive Screen ◽

Milk Samples ◽

Lactating Mothers

Objective There are limited published data on the transmission of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus from mothers to newborns through breastfeeding or from breast milk. The World Health Organization released guidelines encouraging mothers with suspected or confirmed COVID-19 to breastfeed as the benefits of breastfeeding outweighs the possible risk of transmission. The objective of this study was to determine if SARS-CoV-2 was present in the breast milk of lactating mothers who had a positive SARS-CoV-2 nasopharyngeal swab test prior to delivery, and the clinical outcomes for their newborns. Study Design This was a single-center, observational, prospective cohort study. Maternal–newborn dyads that delivered at New York University Langone Hospital Brooklyn with confirmed maternal SARS-CoV-2 positive screen test at the time of admission were recruited for the study. Breast milk samples were collected during postpartum hospitalization and tested for the presence of SARS-CoV-2 genes N1 and N2 by two-step reverse transcription polymerase chain reaction. Additionally, the clinical characteristics of the maternal newborn dyad, results of nasopharyngeal SARS-CoV-2 testing, and neonatal follow-up data were collected. Results A total of 19 mothers were included in the study and their infants who were all fed breast milk. Breast milk samples from 18 mothers tested negative for SARS-CoV-2, and 1 was positive for SARS-CoV-2 RNA. The infant who ingested the breast milk that tested positive had a negative nasopharyngeal test for SARS-CoV-2, and had a benign clinical course. There was no evidence of significant clinical infection during the hospital stay or from outpatient neonatal follow-up data for all the infants included in this study. Conclusion In a small cohort of SARS-CoV-2 positive lactating mothers giving birth at our institution, most of their breast milk samples (95%) contained no detectable virus, and there was no evidence of COVID-19 infection in their breast milk-fed neonates. Key Points

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Natural history of the TT virus infection through follow-up of TTV DNA–positive multiple-transfused patients

Blood ◽

10.1182/blood.v95.1.347.001k42_347_351 ◽

2000 ◽

Vol 95 (1) ◽

pp. 347-351 ◽

Cited By ~ 2

Author(s):

Jean-Jacques Lefrère ◽

Françoise Roudot-Thoraval ◽

François Lefrère ◽

Alain Kanfer ◽

Martine Mariotti ◽

...

Keyword(s):

Natural History ◽

Rna Virus ◽

Elevated Serum ◽

Cross Sectional Study ◽

Cross Sectional ◽

Hepatitis G Virus ◽

Tt Virus ◽

Parenteral Transmission ◽

Virus C

Little is known about the natural history and the pathogenicity of the TT virus (TTV). We present our findings of a cross-sectional study based on the TTV DNA screening of 173 multiple-transfused patients and a longitudinal study based on the follow-up of TTV DNA–positive patients. Overall, 48 patients (27.7%) tested positive for TTV DNA. The influence of the number of blood donor exposures on the prevalence of blood-borne viral infection indicates that TTV, hepatitis C virus (HCV), and an RNA virus known as GB virus C/hepatitis G virus (GBV-C/HGV) share a parenteral transmission, but that TTV, in contrast to the 2 other viruses, is also transmitted by at least another efficient means. The patients having a well-defined date of TTV infection were positive for TTV DNA during a mean period of 3.1 years. A chronic infection was observed in 31 cases (86%). TTV carriage appeared clinically benign in all patients. No clinical evidence of a disease potentially linked to the TTV infection was observed in patients with TTV DNA carriage over several years. The majority of TTV carriers had no biochemical evidence of liver disease. The prevalence of elevated serum alanine aminotransferase (ALT) level was higher in the TTV DNA–positive group, even in the absence of HCV infection, but the observed peaks of ALT level were most often transient and very mild. The prevalence of TTV DNA observed in blood recipients is consistent with that of TTV infection observed in blood donors. TTV infection frequently tends to persist. (Blood. 2000;95:347-351)

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Acyclovir Excretion in Human Breast Milk

Annals of Pharmacotherapy ◽

10.1177/106002809402800506 ◽

1994 ◽

Vol 28 (5) ◽

pp. 585-587 ◽

Cited By ~ 26

Author(s):

Anna Taddio ◽

Julia Klein ◽

Gideon Koren

Keyword(s):

Herpes Zoster ◽

Breast Milk ◽

Adverse Effects ◽

Breast Feeding ◽

Human Breast Milk ◽

Human Breast ◽

Milk Samples ◽

Days Of Therapy

OBJECTIVE: To measure acyclovir concentrations in the breast milk of a lactating woman using the drug for herpes zoster while nursing her 7-month-old infant. METHODS: The maternal dosage of acyclovir was 800 mg five times daily for seven days. Three random breast milk samples collected on the fifth and sixth days of therapy were analyzed for acyclovir concentrations with radioimmunoassay (RIA). RESULTS: Acyclovir concentrations in breast milk ranged from 18.5 μmol (4.16 μg/mL) to 25.8 μmol (5.81 μg/mL). An estimate of the infant's dosage ingested through nursing was 0.73 mg/kg/d, or approximately 1 percent of the maternal dose in milligrams/kilograms/day. The baby was nursed without any signs of adverse effects. CONCLUSIONS: Acyclovir was measured in clinically insignificant concentrations in the milk of a woman receiving large dosages for herpes zoster. Breast feeding continued without adverse effects to the nursing infant.

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