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3. Defining Failed Induction of Labor

Author

Grobman, W.A., Bailit, J., Lai, Y., Reddy, U.M., Wapner, R.J., Varner, M.W., Thorp, J.M., Jr, Leveno, K.J., Caritis, S.N., Prasad, M., Tita, A.T.N., Saade, G., Sorokin, Y., Rouse, D.J., Blackwell, S.C., and Tolosa, J.E.

Published
2018
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5. Outcomes of breakthrough COVID-19 in hospitalized adult patients vaccinated with Gam-COVID-Vac (Sputnik V)

Author

Nadtocheeva, V., primary, Bulanov, N., primary, Akulkina, L., primary, Berzegova, T., primary, Budko, A., primary, Kalashnikov, M., primary, Moiseev, A., primary, Tairova, N., primary, Tao, E., primary, Tverdokhlebov, G., primary, Filatova, E., primary, Chuchin, G., primary, Shakhgildyan, N., primary, Schepalina, A., primary, Suvorov, A., primary, Kuchieva, A., primary, Vasilyeva, M., primary, Novikov, P., primary, Sorokin, Y., primary, Sholomova, V., primary, Brovko, M., primary, and Moiseev, S., primary

Published
2022
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6. Evaluation of delivery options for second-stage events

Author

Bailit, Jennifer L., Grobman, William A., Rice, Madeline Murguia, Wapner, Ronald J., Reddy, Uma M., Varner, Michael W., Thorp, John M., Jr., Caritis, Steve N., Iams, Jay D., Saade, George, Rouse, Dwight J., Tolosa, Jorge E., Talucci, M., Zylfijaj, M., Reid, Z., Leed, R., Benson, J., Forester, S., Kitto, C., Davis, S., Falk, M., Perez, C., Hill, K., Sowles, A., Postma, J., Alexander, S., Andersen, G., Scott, V., Morby, V., Jolley, K., Miller, J., Berg, B., Dorman, K., Mitchell, J., Kaluta, E., Clark, K., Spicer, K., Timlin, S., Wilson, K., Leveno, K., Moseley, L., Santillan, M., Price, J., Buentipo, K., Bludau, V., Thomas, T., Fay, L., Melton, C., Kingsbery, J., Benezue, R., Simhan, H., Bickus, M., Fischer, D., Kamon, T., DeAngelis, D., Mercer, B., Milluzzi, C., Dalton, W., Dotson, T., McDonald, P., Brezine, C., McGrail, A., Latimer, C., Guzzo, L., Johnson, F., Gerwig, L., Fyffe, S., Loux, D., Frantz, S., Cline, D., Wylie, S., Iams, J., Tita, A., Wallace, M., Northen, A., Grant, J., Colquitt, C., Rouse, D., Andrews, W., Mallett, G., Ramos-Brinson, M., Roy, A., Stein, L., Campbell, P., Collins, C., Jackson, N., Dinsmoor, M., Senka, J., Paychek, K., Peaceman, A., Moss, J., Salazar, A., Acosta, A., Hankins, G., Sorokin, Y., Hauff, N., Palmer, L., Lockhart, P., Driscoll, D., Wynn, L., Sudz, C., Dengate, D., Girard, C., Field, S., Breault, P., Smith, F., Annunziata, N., Allard, D., Silva, J., Gamage, M., Hunt, J., Tillinghast, J., Corcoran, N., Jimenez, M., Blackwell, S., Ortiz, F., Givens, P., Rech, B., Moran, C., Hutchinson, M., Spears, Z., Carreno, C., Heaps, B., Zamora, G., Seguin, J., Rincon, M., Snyder, J., Farrar, C., Lairson, E., Bonino, C., Smith, W., Beach, K., Van Dyke, S., Butcher, S., Thom, E., Zhao, Y., McGee, P., Momirova, V., Palugod, R., Reamer, B., Larsen, M., Williams, T., Swartz, C., Bhandaru, V., Spong, C., Tolivaisa, S., and VanDorsten, J. P.

Published
2016
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10. Evaluation of delivery options for second-stage events

Author

Talucci, M., Zylfijaj, M., Reid, Z., Leed, R., Benson, J., Forester, S., Kitto, C., Davis, S., Falk, M., Perez, C., Hill, K., Sowles, A., Postma, J., Alexander, S., Andersen, G., Scott, V., Morby, V., Jolley, K., Miller, J., Berg, B., Dorman, K., Mitchell, J., Kaluta, E., Clark, K., Spicer, K., Timlin, S., Wilson, K., Leveno, K., Moseley, L., Santillan, M., Price, J., Buentipo, K., Bludau, V., Thomas, T., Fay, L., Melton, C., Kingsbery, J., Benezue, R., Simhan, H., Bickus, M., Fischer, D., Kamon, T., DeAngelis, D., Mercer, B., Milluzzi, C., Dalton, W., Dotson, T., McDonald, P., Brezine, C., McGrail, A., Latimer, C., Guzzo, L., Johnson, F., Gerwig, L., Fyffe, S., Loux, D., Frantz, S., Cline, D., Wylie, S., Iams, J., Tita, A., Wallace, M., Northen, A., Grant, J., Colquitt, C., Rouse, D., Andrews, W., Mallett, G., Ramos-Brinson, M., Roy, A., Stein, L., Campbell, P., Collins, C., Jackson, N., Dinsmoor, M., Senka, J., Paychek, K., Peaceman, A., Moss, J., Salazar, A., Acosta, A., Hankins, G., Sorokin, Y., Hauff, N., Palmer, L., Lockhart, P., Driscoll, D., Wynn, L., Sudz, C., Dengate, D., Girard, C., Field, S., Breault, P., Smith, F., Annunziata, N., Allard, D., Silva, J., Gamage, M., Hunt, J., Tillinghast, J., Corcoran, N., Jimenez, M., Blackwell, S., Ortiz, F., Givens, P., Rech, B., Moran, C., Hutchinson, M., Spears, Z., Carreno, C., Heaps, B., Zamora, G., Seguin, J., Rincon, M., Snyder, J., Farrar, C., Lairson, E., Bonino, C., Smith, W., Beach, K., Van Dyke, S., Butcher, S., Thom, E., Zhao, Y., McGee, P., Momirova, V., Palugod, R., Reamer, B., Larsen, M., Williams, T., Swartz, C., Bhandaru, V., Spong, C., Tolivaisa, S., VanDorsten, J.P., Bailit, Jennifer L., Grobman, William A., Rice, Madeline Murguia, Wapner, Ronald J., Reddy, Uma M., Varner, Michael W., Thorp, John M., Jr., Caritis, Steve N., Iams, Jay D., Saade, George, Rouse, Dwight J., and Tolosa, Jorge E.

Published
2016
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11. Secondary Recycling of Smelter Slags

Author

Demin, B. L., Sorokin, Y. V., Smirno, L. A., Shcherbakov, Y. N., Demin, B. L., Sorokin, Y. V., Smirno, L. A., and Shcherbakov, Y. N.

Abstract

The modern structure of ferrous metallurgy slags recovery has been shown. Growth of recycling amounts is connected with high-capacity stationary and mobile crushing and screening plants (both foreign- and domestic made). The issues of environment protection against dust emissions still remain unsolved.

Published
2020

12. Possibility of Slag Sensible Heat Recovery on Drum-like Installations

Author

Sorokin, Y. V., Demin, B. L., Smirnov, L. A., Shcherbakov, Y. N., Sorokin, Y. V., Demin, B. L., Smirnov, L. A., and Shcherbakov, Y. N.

Abstract

A variant of utilizing of slag physical heat in drum-like installations has been considered. A high-temperature melt is delivered to movable metal bodies. Heat is picked up from the working bodies surface and newly generated surfaces of slag due to interaction with working bodies. Surface of slag grains, as they cool down, allows to pick up heat with various energy characteristics.

Published
2020

15. Clinical outcomes of patients with COVID-19 admitted for respiratory support to the intensive care units in Russia

Author

Glybochko, P., primary, Fomin, V., additional, Moiseev, S., additional, Avdeev, S., additional, Yavorovskiy, A., additional, Brovko, M., additional, Umbetova, K., additional, Aliev, V., additional, Bulanova, E., additional, Bondarenko, I., additional, Volkova, O., additional, Gaynitdinova, V., additional, Gneusheva, T., additional, Dubrovin, K., additional, Kapustina, V., additional, Kraeva, V., additional, Merzhoeva, Z., additional, Nuralieva, G., additional, Novikov, P., additional, Nogtev, P., additional, Panasyuk, V., additional, Politov, M., additional, Popov, A., additional, Popova, E., additional, Raspopina, N., additional, Royuk, V., additional, Sorokin, Y., additional, Trushenko, N., additional, Khalikova, E., additional, Tsareva, N., additional, Chikina, S., additional, Chichkova, N., additional, Akulkina, L., additional, Beketov, V., additional, Bulanov, N., additional, Ermolova, L., additional, Zykova, A., additional, Kitbalyan, A., additional, Moiseev, A., additional, Potapov, P., additional, Smirnova, I., additional, Tao, E., additional, Sholomova, V., additional, Shchepalina, A., additional, and Yakovleva, A., additional

Published
2020
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30. The association among cytochrome P450 3A, progesterone receptor polymorphisms, plasma 17-alpha hydroxyprogesterone caproate concentrations, and spontaneous preterm birth

Author

Palugod, R., Tillinghast, J., Luce, M., Perez, C., Anderson, G., Glenn-Cole, B., Huntley, M., Parks, M., Dinsmoor, M., Meis, P., Driscoll, D., Wynn, L., Jablonski, K.A., Landon, M., Rouse, D.J., Iams, J.D., Klebanoff, M., Mercer, B.M., Dorman, K., Scott, B., Thorp, J., Simon, P.J., Eunice Kennedy Shriver National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network, Ramos-Brinson, M., Cannon, K., Tocci, C., Blackwell, S., Russell, J., Stetzer, B., Sorokin, Y., Ehrenberg, H., Allard, D., Lake, M., Anderson, K., Cline, D., Carmona, V., Parsons, J., Thom, E., Gilstrap, L.C., Reddy, U.M., Bustos, M.L., Johnson, F., Bonnemort, S., Zhao, W., Husami, H., Tolivaisa, S., Walker, H., Dalton, W., Hoffman, M., Varner, M.W., Sciscione, A., Sudz, C., Mallett, G., Ramin, S.M., Files, P.B., Whitaker-Carr, C., Harper, M., Carpenter, M.W., Caritis, S.N., Norman, G., Lund, D., Leftwich, C., Venkataramanan, R., Spong, C., Prata, E., Talucci, M., Milluzzi, C., Wilson, S., Hunter, J., Hamden, K., Leuchtenburg, L., Lankford, C., Bousleiman, S., Manuck, T., South, S., Andrews, W.W., Wapner, R.J., Peaceman, A.M., Swain, M., Cotroneo, M., Zachary, J., and Northen, A.

Abstract

Background Infants born

Published
2017
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31. Maternal and Neonatal Outcomes With Early Compared With Delayed Pushing Among Nulliparous Women

Author

Yee, L.M., primary, Sandoval, G., additional, Bailit, J., additional, Reddy, U.M., additional, Wapner, R.J., additional, Varner, M.W., additional, Caritis, S.N., additional, Prasad, M., additional, Tita, A.T., additional, Saade, G., additional, Sorokin, Y., additional, Rouse, D.J., additional, Blackwell, S.C., additional, and Tolosa, J.E., additional

Published
2017
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32. Prenatal vitamin C and E supplementation in smokers is associated with reduced placental abruption and preterm birth: a secondary analysis

Author

Mercer, B. M., Sorokin, Y., Gandley, R. E., Wapner, R. J., Leveno, K. J., Clifton, R. G., Harper, M., Abramovici, A., Samuels, P., Saade, G., Myatt, L., Peaceman, A. M., Sciscione, A., and Thorp, J. M.

Abstract

Smoking and Preeclampsia (PE) are associated with increases in preterm birth, placental abruption and low birth weight. We evaluated the relationship between prenatal vitamin C/E supplementation and perinatal outcomes by maternal self-reported smoking status focusing on outcomes known to be impacted by maternal smoking.

Published
2015
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33. Cervical funneling or intra-amniotic debris and preterm birth in nulliparous women with midtrimester cervical length less than 30 mm.

Author

Saade, G. R., Thom, E. A., Grobman, W. A., Iams, J. D., Mercer, B. M., Reddy, U. M., Tita, A. T. N., Rouse, D. J., Sorokin, Y., Wapner, R. J., Leveno, K. J., Blackwell, S. C., Esplin, M. S., Tolosa, J. E., Thorp, J. M., Caritis, S. N., Vandorsten, J. P., Moss, J., Salazar, A., and Hankins, G.

Subjects
PREMATURE labor, SECOND trimester of pregnancy, FETAL ultrasonic imaging, GESTATIONAL age, HYDROXYPROGESTERONE, PROGESTERONE, AMNIOTIC liquid, CERVIX uteri, PREMATURE infants, LONGITUDINAL method, MATERNAL age, RESEARCH funding, THERAPEUTICS
Abstract

Objective: To evaluate whether the presence of cervical funneling or intra-amniotic debris identified in the second trimester is associated with a higher rate of preterm birth (PTB) in asymptomatic nulliparous pregnant women with a midtrimester cervical length (CL) less than 30 mm (i.e. below the 10th percentile).Methods: This was a secondary cohort analysis of data from a multicenter trial in nulliparous women between 16 and 22 weeks' gestation with a singleton gestation and CL less than 30 mm on transvaginal ultrasound, randomized to treatment with either 17-alpha-hydroxyprogesterone caproate or placebo. Sonographers were centrally certified in CL measurement, as well as in identification of intra-amniotic debris and cervical funneling. Univariable and multivariable analysis was performed to assess the associations of cervical funneling and intra-amniotic debris with PTB.Results: Of the 657 women randomized, 112 (17%) had cervical funneling only, 33 (5%) had intra-amniotic debris only and 45 (7%) had both on second-trimester ultrasound. Women with either of these findings had a shorter median CL than those without (21.0 mm vs 26.4 mm; P < 0.001). PTB prior to 37 weeks was more likely in women with cervical funneling (37% vs 21%; odds ratio (OR), 2.2 (95% CI, 1.5-3.3)) or intra-amniotic debris (35% vs 23%; OR, 1.7 (95% CI, 1.1-2.9)). Results were similar for PTB before 34 and before 32 weeks' gestation. After multivariable adjustment that included CL, PTB < 34 and < 32 weeks continued to be associated with the presence of intra-amniotic debris (adjusted OR (aOR), 1.85 (95% CI, 1.00-3.44) and aOR, 2.78 (95% CI, 1.42-5.45), respectively), but not cervical funneling (aOR, 1.17 (95% CI, 0.63-2.17) and aOR, 1.45 (95% CI, 0.71-2.96), respectively).Conclusions: Among asymptomatic nulliparous women with midtrimester CL less than 30 mm, the presence of intra-amniotic debris, but not cervical funneling, is associated with an increased risk for PTB before 34 and 32 weeks' gestation, independently of CL. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd. [ABSTRACT FROM AUTHOR]

Published
2018
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34. Vitamin D status and recurrent preterm birth: a nested case-control study in high-risk women

Author

Peaceman, A. M., Thorp, J. M., Klebanoff, M. A., Mercer, B. M., Carpenter, M. W., Ramin, S. M., Varner, M. W., Harper, M., Caritis, S. N., McGee, P. L., Rouse, D. J., Sciscione, A., Iams, J. D., Anderson, G. B., Camargo, C. A., Wapner, R. J., and Sorokin, Y.

Abstract

OBJECTIVE: To determine whether vitamin D status is associated with recurrent preterm birth, and any interactions between vitamin D levels and fish consumption. DESIGN: A nested case-control study, using data from a randomised trial of omega-3 fatty acid supplementation to prevent recurrent preterm birth. SETTING: Fourteen academic health centres in the USA. POPULATION: Women with prior spontaneous preterm birth. METHODS: In 131 cases (preterm delivery at

Published
2012
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35. Relationship Between 17-α Hydroxyprogesterone Caproate Concentration and Spontaneous Preterm Birth

Author

Caritis, S.N., primary, Venkataramanan, R., additional, Thom, E., additional, Harper, M., additional, Klebanoff, M.A., additional, Sorokin, Y., additional, Thorp, J.M., additional, Varner, M.W., additional, Wapner, R.J., additional, Iams, J.D., additional, Carpenter, M.W., additional, Grobman, W.A., additional, Mercer, B.M., additional, Sciscione, A., additional, Rouse, D.J., additional, and Ramin, S., additional

Published
2015
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36. Laboratory Abnormalities in Pregnancy-associated Hypertension

Author

Cantu, J., primary, Clifton, R.G., additional, Roberts, J.M., additional, Leveno, K.J., additional, Myatt, L., additional, Reddy, U.M., additional, Varner, M.W., additional, Wapner, R.J., additional, Thorp, J.M., additional, Mercer, B.M., additional, Peaceman, A.M., additional, Ramin, S.M., additional, Samuels, P., additional, Sciscione, A., additional, Saade, G., additional, and Sorokin, Y., additional

Published
2015
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37. Frequency of and Factors Associated With Severe Maternal Morbidity

Author

Grobman, W.A., primary, Bailit, J.L., additional, Rice, M.M., additional, Wapner, R.J., additional, Reddy, U.M., additional, Varner, M.W., additional, Thorp, J.M., additional, Leveno, K.J., additional, Caritis, S.N., additional, Iams, J.D., additional, Tita, A.T., additional, Saade, G., additional, Sorokin, Y., additional, Rouse, D.J., additional, Blackwell, S.C., additional, Tolosa, J.E., additional, and Van Dorsten, J.P., additional

Published
2015
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38. Seasonally contrasting responses of evapotranspiration to warming and elevated CO2 in a semiarid grassland.

Author

Sorokin, Y., Zelikova, T. J., Blumenthal, D., Williams, D. G., and Pendall, E.

Subjects
CLIMATE change, EVAPOTRANSPIRATION, VEGETATION greenness, ARID regions, SOIL moisture
Abstract

Global climate change is expected to alter seasonal patterns and rates of evapotranspiration in dry regions. Although climate change will involve elevated CO2 and increased temperatures, independently, these factors may have different impacts on actual evapotranspiration (AET) due to their opposing effects on transpiration. We used canopy gas exchange chambers to quantify AET in a semiarid grassland experimentally altered by elevated CO2 and warming over 3 years with contrasting ambient precipitation. Seasonal and interannual variations in AET due to background climate variability were larger than the effects of climate manipulation treatments. However, in a year with average precipitation, cumulative growing season AET was suppressed by warming by 23%. Across years, warming increased AET early in the growing season and suppressed it later in the growing season. By contrast, elevated CO2 suppressed AET early in the growing season and enhanced it later, but only in years with average or above-average precipitation. Vegetation greenness (a proxy for photosynthetically active leaf area) was consistently the strongest predictor of AET, whereas soil moisture and vapor pressure deficit were secondary drivers. Our research demonstrates that effects of increased atmospheric CO2 and temperature on AET will be mediated by plant phenological development and seasonal climatic conditions. [ABSTRACT FROM AUTHOR]

Published
2017
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40. Placenta Accreta With Prior Uterine Surgery Outside of the Lower Segment

Author

Gyamfi-Bannerman, C., primary, Gilbert, S., additional, Landon, M.B., additional, Spong, C.Y., additional, Rouse, D.J., additional, Varner, M.W., additional, Caritis, S.N., additional, Meis, P.J., additional, Wapner, R.J., additional, Sorokin, Y., additional, Carpenter, M., additional, Peaceman, A.M., additional, O’Sullivan, M.J., additional, Sibai, B.M., additional, Thorp, J.M., additional, and Mercer, Ramin S.M., additional

Published
2014
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41. Haptoglobin Phenotype, Preeclampsia Risk and the Efficacy of Vitamin C and E Supplementation to Prevent Preeclampsia in a Racially Diverse Population

Author

Weissgerber, TL, Gandley, RE, McGee, PL, Spong, CY, Myatt, L, Leveno, KJ, Thorp, JM, Mercer, BM, Peaceman, AM, Ramin, SM, Carpenter, MW, Samuels, P, Sciscione, A, Harper, M, Tolosa, JE, Saade, G, Sorokin, Y, Weissgerber, TL, Gandley, RE, McGee, PL, Spong, CY, Myatt, L, Leveno, KJ, Thorp, JM, Mercer, BM, Peaceman, AM, Ramin, SM, Carpenter, MW, Samuels, P, Sciscione, A, Harper, M, Tolosa, JE, Saade, G, and Sorokin, Y

Abstract

Haptoglobin's (Hp) antioxidant and pro-angiogenic properties differ between the 1-1, 2-1, and 2-2 phenotypes. Hp phenotype affects cardiovascular disease risk and treatment response to antioxidant vitamins in some non-pregnant populations. We previously demonstrated that preeclampsia risk was doubled in white Hp 2-1 women, compared to Hp 1-1 women. Our objectives were to determine whether we could reproduce this finding in a larger cohort, and to determine whether Hp phenotype influences lack of efficacy of antioxidant vitamins in preventing preeclampsia and serious complications of pregnancy-associated hypertension (PAH). This is a secondary analysis of a randomized controlled trial in which 10,154 low-risk women received daily vitamin C and E, or placebo, from 9-16 weeks gestation until delivery. Hp phenotype was determined in the study prediction cohort (n = 2,393) and a case-control cohort (703 cases, 1,406 controls). The primary outcome was severe PAH, or mild or severe PAH with elevated liver enzymes, elevated serum creatinine, thrombocytopenia, eclampsia, fetal growth restriction, medically indicated preterm birth or perinatal death. Preeclampsia was a secondary outcome. Odds ratios were estimated by logistic regression. Sampling weights were used to reduce bias from an overrepresentation of women with preeclampsia or the primary outcome. There was no relationship between Hp phenotype and the primary outcome or preeclampsia in Hispanic, white/other or black women. Vitamin supplementation did not reduce the risk of the primary outcome or preeclampsia in women of any phenotype. Supplementation increased preeclampsia risk (odds ratio 3.30; 95% confidence interval 1.61-6.82, p<0.01) in Hispanic Hp 2-2 women. Hp phenotype does not influence preeclampsia risk, or identify a subset of women who may benefit from vitamin C and E supplementation to prevent preeclampsia.

Published
2013

42. The Utility of Uterine Artery Doppler Velocimetry in Prediction of Preeclampsia in a Low-Risk Population

Author

Myatt, L., primary, Clifton, R.G., additional, Roberts, J.M., additional, Spong, C.Y., additional, Hauth, J.C., additional, Varner, M.W., additional, Wapner, R.J., additional, Thorp, J.M., additional, Mercer, B.M., additional, Grobman, W.A., additional, Ramin, S.M., additional, Carpenter, M.W., additional, Samuels, P., additional, Sciscione, A., additional, Harper, M., additional, Tolosa, J.E., additional, Saade, G., additional, Sorokin, Y., additional, and Anderson, G.D., additional

Published
2013
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43. On the changing ecology of Venice Lagoon

Author

Sorokin, P. Y. U., Sorokin, Y. U. I., ZAKUSKINA O., Yu, and Ravagnan, Giampietro

Subjects
lagoonal ecology, Venice lagoon, anthropogenic stress, pollution, microplankton, sulfides in sediments, ecological monitoring
Published
2002

45. Heterotrophic denitrification at extremely high salt and pH by haloalkaliphilic Gammaproteobacteria from hypersaline soda lakes

Author

Shapovalova, A.A. (author), Khijniak, T.V. (author), Tourova, T.P. (author), Muyzer, G. (author), Sorokin, Y. (author), Shapovalova, A.A. (author), Khijniak, T.V. (author), Tourova, T.P. (author), Muyzer, G. (author), and Sorokin, Y. (author)

Abstract

In this paper we describe denitrification at extremely high salt and pH in sediments from hypersaline alkaline soda lakes and soda soils. Experiments with sediment slurries demonstrated the presence of acetate-utilizing denitrifying populations active at in situ conditions. Anaerobic enrichment cultures at pH 10 and 4 M total Na+ with acetate as electron donor and nitrate, nitrite and N2O as electron acceptors resulted in the dominance of Gammaproteobacteria belonging to the genus Halomonas. Both mixed and pure culture studies identified nitrite and N2O reduction as rate-limiting steps in the denitrification process at extremely haloalkaline conditions., Biotechnology, Applied Sciences

Published
2008

47. Effect of Antenatal Corticosteroids on Respiratory Morbidity in Singletons After Late-Preterm Birth

Author

Gyamfi-Bannerman, C., primary, Gilbert, S., additional, Landon, M.B., additional, Spong, C.Y., additional, Rouse, D.J., additional, Varner, M.W., additional, Meis, P.J., additional, Wapner, R.J., additional, Sorokin, Y., additional, Carpenter, M., additional, Peaceman, A.M., additional, O’Sullivan, M.J., additional, Sibai, B.M., additional, Thorp, J.M., additional, Ramin, S.M., additional, and Mercer, B.M., additional

Published
2013
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49. The effects of intrapartum magnesium sulfate therapy on fetal serum interleukin-1beta, interleukin-6, and tumor necrosis factor-alpha at delivery: a randomized, placebo-controlled trial.

Author

Blackwell SC, Hallak M, Hassan SS, Berry SM, Russell E, Sorokin Y, Blackwell, S C, Hallak, M, Hassan, S S, Berry, S M, Russell, E, and Sorokin, Y

Abstract

Objective: Elevated levels of inflammatory cytokines in the fetus have been linked to neurologic morbidities in preterm neonates. Magnesium sulfate is currently being studied in clinical trials as a potential fetal neuroprotective agent. The purpose of this study was to determine whether intrapartum magnesium sulfate therapy has an effect on the umbilical venous concentrations of interleukin-1beta, interleukin-6, and tumor necrosis factor-alpha at delivery.Study Design: Women with singleton gestations >32 weeks with no clinical indications for magnesium sulfate therapy (preeclampsia or tocolysis) and either clinical chorioamnionitis or prolonged rupture of membranes were recruited for the study. Consenting patients were randomly assigned, in a double-blinded fashion, to receive either magnesium sulfate (6-g load then 2 g/hr) or matched volumes of lactated Ringer's solution until delivery. Fetal blood specimens were obtained by aspiration of the umbilical vein after cord clamping but before placental separation. Umbilical cytokine levels were measured with a sensitive and specific immunoassay.Results: Twenty-two patients were randomly assigned to groups and received either magnesium sulfate (n = 11) or placebo (n = 11). There were no differences in the demographic or clinical characteristics between groups. The umbilical venous ionized magnesium concentration was significantly higher in the magnesium sulfate group (2.32 +/- 0.27 mg/dL vs 1.23 +/- 0.15 mg/dL; P <.001). There were no statistically significant differences between groups with respect to umbilical levels of interleukin-1beta (1.5 pg/mL [1.5-58] vs 1.5 pg/mL [1.5-10]; P =.5); interleukin-6 (8.5 pg/mL [1-1000] vs 11.2 pg/mL [1-113]; P =.9); or tumor necrosis factor-alpha (16 pg/mL [7.6-20.3] vs 16.6 pg/mL [8.3-22.2]; P =.5).Conclusion: In this pilot study the intrapartum administration of magnesium sulfate does not appear to affect the concentration of inflammatory cytokines in fetal blood at delivery. [ABSTRACT FROM AUTHOR]

Published
2001
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