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https://www.readbyqxmd.com/read/28226890/stability-of-the-microdroplets-for-portable-biosensor
#1
Yusuke Izawa, Toshihisa Osaki, Koki Kamiya, Satoshi Fujii, Norihisa Miki, Shoji Takeuchi, Yusuke Izawa, Toshihisa Osaki, Koki Kamiya, Satoshi Fujii, Norihisa Miki, Shoji Takeuchi, Koki Kamiya, Satoshi Fujii, Norihisa Miki, Shoji Takeuchi, Yusuke Izawa, Toshihisa Osaki
This paper highlights the behavior of microdroplets used for portable biosensors. Microdroplets have been applied for various Lab-on-a-chip applications, in which portability/wearable is becoming a trend word. However, the resonance (sloshing phenomena) of the microdroplets could be an issue. For example, bilayer lipid membrane, fragile characteristics due to its thickness of 5 nm, easily ruptures by jiggling. We therefore prepared various dimensions of droplets by changing the well shape, and examined the resulting waves depending on the vibration frequency between 20 and 100 Hz, including daily life frequencies...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28213191/microneurosurgical-management-of-posterior-communicating-artery-aneurysm-a-contemporary-series-from-helsinki
#2
Peeraphong Thiarawat, Behnam Rezai Jahromi, Danil A Kozyrev, Patcharin Intarakhao, Mario K Teo, Joham Choque-Velasquez, Juha Hernesniemi
OBJECTIVE: Our purposes are to analyze microsurgical techniques and to determine correlations between microsurgical techniques with the radiographic findings in the microneurosurgical treatment of the posterior communicating artery aneurysms (PCoAAs). METHODS: The authors retrospectively analyzed radiographic findings and videos of surgery in 64 patients with PCoAAs who underwent microsurgical clipping by the senior author from August 2010-2014. RESULTS: From 64 aneurysms, 30 (47%) had SAH that necessitated the lamina terminalis fenestration (odds ratio [OR], 67...
February 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28209998/cervical-pessary-for-prevention-of-preterm-birth-a-meta-analysis
#3
Xin-Hang Jin, Dan Li, Li-Li Huang
To investigate the efficacy of cervical pessary placement in preventing preterm birth and perinatal morbidity and mortality in asymptomatic women with a singleton pregnancy and a short cervix, we searched literature in relevant databases. The meta-analysis of the 3 included trials (1412 women) showed cervical pessary placement did not reduce the risk of spontaneous preterm birth <34 weeks in these women (risk ratio (RR), 0.71; 95% confidence interval (CI), 0.21-2.43, P = 0.59; I(2) = 90%). The sensitivity analyses by excluding one trial at one time showed the same results...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209491/the-preterm-cervix-reveals-a-transcriptomic-signature-in-the-presence-of-premature-pre-labor-rupture-of-membranes
#4
Sofia Makieva, Aurelija Dubicke, Sara F Rinaldi, Emma Fransson, Gunvor Ekman-Ordeberg, Jane E Norman
BACKGROUND: Premature Pre-labor Rupture of Fetal Membranes (PPROM) accounts for 30% of all premature births and is associated with detrimental long-term infant outcomes. Premature cervical remodeling, facilitated by matrix metalloproteinases (MMPs), may trigger rupture at the zone of the fetal membranes overlying the cervix. The similarities and differences underlying cervical remodeling in PPROM and spontaneous preterm labor with intact membranes (PTL) are unexplored. OBJECTIVES: We aimed a) to perform the first transcriptomic assessment of the preterm human cervix to identify differences between PPROM and PTL and b) to compare the enzymatic activities of MMP-2 and 9 between PPROM and PTL...
February 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28202378/neonatology-oxidative-status-in-preterm-infants-with-premature-preterm-rupture-of-membranes-and-fetal-inflammatuar-response-syndrome
#5
Elif Özalkaya, Güner Karatekin, Sevilay Topçuoğlu, Hande Özgün Karatepe, Taner Hafızoğlu, Pervin Baran, Fahri Ovalı
BACKGROUND: The aim of this study, to determine an index of oxidative stress index in preterm infants less than 34 weeks gestational age with premature preterm rupture of membrane (PPROM) and fetal inflammatory response syndrome (FIRS). METHODS: This study was designed as a prospective study. Fifty-one premature infants less than 35 weeks of gestational age were included in the study. The umbilical cord blood concentrations of IL-6, TAC (total antioxidant capacity) and PON-1 (paraoxonase-1) levels and TOS (total oxidative stress) were studied...
January 17, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28202111/-mortality-rate-and-cause-of-death-in-hospitalized-neonates-an-analysis-of-480-cases
#6
Feng-Dan Xu, Xiang-Yong Kong, Zhi-Chun Feng
OBJECTIVE: To investigate the mortality rate and the cause of death of hospitalized neonates. METHODS: The clinical data of 480 neonates who died between January 2008 and December 2014 were collected. The mortality rates of neonates with different gestational ages, birth weights, sexes, and ages in days were analyzed. The abnormal perinatal factors, cause of death, and death grade were summarized. RESULTS: Among the 41 910 hospitalized neonates, 480 (1...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28192531/multi-layered-control-of-galectin-8-mediated-autophagy-during-adenovirus-cell-entry-through-a-conserved-ppxy-motif-in-the-viral-capsid
#7
Charlotte Montespan, Shauna A Marvin, Sisley Austin, Andrew M Burrage, Benoit Roger, Fabienne Rayne, Muriel Faure, Edward M Campell, Carola Schneider, Rudolph Reimer, Kay Grünewald, Christopher M Wiethoff, Harald Wodrich
Cells employ active measures to restrict infection by pathogens, even prior to responses from the innate and humoral immune defenses. In this context selective autophagy is activated upon pathogen induced membrane rupture to sequester and deliver membrane fragments and their pathogen contents for lysosomal degradation. Adenoviruses, which breach the endosome upon entry, escape this fate by penetrating into the cytosol prior to autophagosome sequestration of the ruptured endosome. We show that virus induced membrane damage is recognized through Galectin-8 and sequesters the autophagy receptors NDP52 and p62...
February 13, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28187059/clinical-and-microbiologic-characteristics-of-early-onset-sepsis-among-vlbw-infants-opportunities-for-antibiotic-stewardship
#8
Sagori Mukhopadhyay, Karen M Puopolo
BACKGROUND: Most very-low birth weight (birth weight <1500 grams, VLBW) infants receive empiric antibiotics for risk of early-onset sepsis (EOS). The objective of this study was to determine the characteristics of VLBW infants with culture-confirmed EOS at a single center during 25 years, to identify opportunities for antibiotic stewardship. METHODS: Retrospective cohort study including VLBW infants admitted from 1990-2015. EOS was defined as isolation of a pathogen in blood or cerebrospinal fluid culture obtained < 72 hours of age...
February 9, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28186639/a-retrospective-cohort-study-of-hospital-versus-home-care-for-pregnant-women-with-preterm-prelabor-rupture-of-membranes
#9
Lynne Palmer, Kirsten Grabowska, Jason Burrows, Hilary Rowe, Erin Billing, Amy Metcalfe
OBJECTIVE: To compare maternal and neonatal outcomes between in-hospital management and prepartum care at home (PCAH) among women with preterm prelabor rupture of membranes (PPROM) before 34 weeks of pregnancy. METHODS: In a retrospective study, data were analyzed from women who experienced PPROM between 23 and 34 weeks of pregnancy, and received care from two hospitals in British Columbia, Canada, between April 2007 and March 2012. Women were included if they had been stable in hospital for at least 72 hours and met eligibility criteria for PCAH...
February 10, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28186490/atomistic-simulations-indicate-the-c-subunit-ring-of-the-f1fo-atp-synthase-is-not-the-mitochondrial-permeability-transition-pore
#10
Wenchang Zhou, Fabrizio Marinelli, Corrine Nief, José D Faraldo-Gómez
Pathological metabolic conditions such as ischemia induce the rupture of the mitochondrial envelope and the release of pro-apoptotic proteins, leading to cell death. At the onset of this process, the inner mitochondrial membrane becomes depolarized and permeable to osmolytes, due to the opening of a non-selective protein channel of unknown molecular identity. A recent study purports that this channel, referred to as Mitochondrial Permeability Transition Pore (MPTP), is the lumen of the c-subunit ring of the ATP synthase, upon dissociation from the catalytic domain...
February 10, 2017: ELife
https://www.readbyqxmd.com/read/28182867/disordered-clusters-of-bak-dimers-rupture-mitochondria-during-apoptosis
#11
Rachel T Uren, Martin O'Hely, Sweta Iyer, Ray Bartolo, Melissa X Shi, Jason M Brouwer, Amber E Alsop, Grant Dewson, Ruth M Kluck
During apoptosis, Bak and Bax undergo major conformational change and form symmetric dimers that coalesce to perforate the mitochondrial outer membrane via an unknown mechanism. We have employed cysteine labelling and linkage analysis to the full length of Bak in mitochondria. This comprehensive survey showed that in each Bak dimer the N-termini are fully solvent-exposed and mobile, the core is highly structured, and the C-termini are flexible but restrained by their contact with the membrane. Dimer-dimer interactions were more labile than the BH3:groove interaction within dimers, suggesting there is no extensive protein interface between dimers...
February 6, 2017: ELife
https://www.readbyqxmd.com/read/28182768/clinical-validation-of-a-model-predicting-the-risk-of-preterm-delivery
#12
Yohann Dabi, Sophie Nedellec, Claire Bonneau, Blandine Trouchard, Roman Rouzier, Alexandra Benachi
OBJECTIVES: To validate a model predicting the risk of threatened preterm delivery and to establish the optimal threshold for this risk scoring system. MATERIALS AND METHODS: Two cohorts were studied: one of singleton pregnancies without preterm premature rupture of membranes (PPROM) and no cervical cerclage (cohort 1) and one of twin pregnancies without PPROM and no cervical cerclage (cohort 2). Patients were included from January 1st 2013 until December 31st 2013 by the Regional Perinatal Network of Ile de France with patients transferred because of threatened preterm delivery at 22 to 32 weeks of gestation...
2017: PloS One
https://www.readbyqxmd.com/read/28181672/endometriosis-increases-the-risk-of-obstetrical-and-neonatal-complications
#13
Janne Foss Berlac, Dorthe Hartwell, Charlotte Wessel Skovlund, Jens Langhoff-Roos, Øjvind Lidegaard
INTRODUCTION: The objective was to assess obstetrical complications and neonatal outcomes in women with endometriosis as compared to women without endometriosis. MATERIAL AND METHODS: National cohort including all delivering women and their newborns in Denmark 1997-2014. Data were extracted from the Danish Health Register and the Medical Birth Register. Logistic regression analysis provided odds ratios (OR) with 95% confidence intervals (CI). Sub-analyses were made for primiparous women with a singleton pregnancy and for women with endometriosis who underwent gynecological surgery before pregnancy...
February 9, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28178940/accuracy-of-clinical-fetal-weight-estimation-by-midwives
#14
Assaad Kesrouani, Chady Atallah, Ramzi AbouJaoude, Norma Assaf, Hanaa Khaled, Elie Attieh
BACKGROUND: Clinical fetal weight estimation is a common practice in obstetrics. This study aims to evaluate the accuracy of fetal weight estimation by midwives, and to identify factors that may lead to overestimation or underestimation of fetal weight. METHODS: A cohort prospective study in a Lebanese university hospital, included weight estimation of singleton pregnancies above 35 weeks. Multiple pregnancies, unclear dating, growth retardation, malformations and stillbirths cases are excluded...
February 8, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28178310/diversity-and-composition-of-vaginal-microbiota-of-pregnant-women-at-risk-for-transmitting-group-b-streptococcus-treated-with-intrapartum-penicillin
#15
Luiz Fernando Wurdig Roesch, Rita C Silveira, Andréa L Corso, Priscila Thiago Dobbler, Volker Mai, Bruna S Rojas, Álvaro M Laureano, Renato S Procianoy
BACKGROUND: Administering intravenous antibiotics during labor to women at risk for transmitting Group B Streptococcus (GBS) can prevent infections in newborns. However, the impact of intrapartum antibiotic prophylaxis on mothers' microbial community composition is largely unknown. We compared vaginal microbial composition in pregnant women experiencing preterm birth at ≤ 32 weeks gestation that received intrapartum antibiotic prophylaxis with that in controls. METHODS: Microbiota in vaginal swabs collected shortly before delivery from GBS positive women that received penicillin intravenously during labor or after premature rupture of membranes was compared to controls...
2017: PloS One
https://www.readbyqxmd.com/read/28178058/risk-factors-for-postcesarean-maternal-infection-in-a-trial-of-extended-spectrum-antibiotic-prophylaxis
#16
Kim A Boggess, Alan Tita, Victoria Jauk, George Saade, Sherri Longo, Erin A S Clark, Sean Esplin, Kristin Cleary, Ronald Wapner, Kelli Letson, Michelle Owens, Sean Blackwell, Carmen Beamon, Jeffrey M Szychowski, William Andrews
OBJECTIVE: To identify maternal clinical risk factors for postcesarean maternal infection in a randomized clinical trial of preincision extended-spectrum antibiotic prophylaxis. METHODS: We conducted a planned secondary analysis of a randomized clinical trial. Patients were 24 weeks of gestation or greater and delivered by cesarean after a minimum of 4 hours of ruptured membranes or labor. All participants received standard preincision prophylaxis and were randomized to receive azithromycin or placebo...
March 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28176327/women-treated-for-epilepsy-during-pregnancy-outcomes-from-a-nationwide-population-based-cohort-study
#17
Miia Artama, Jemina Ahola, Jani Raitanen, Jukka Uotila, Mika Gissler, Jouko Isojärvi, Anssi Auvinen
INTRODUCTION: Women with epilepsy (WWE) are generally treated as a risk group during pregnancy, but over 90% of pregnant WWE have favorable pregnancies. However, the risk of some pregnancy and delivery complications may be increased among WWE, especially regarding those on antiepileptic drugs. MATERIAL AND METHODS: This nationwide, retrospective population-based cohort study includes WWE who gave birth in Finland during 1987-2008 (n=1737) and the reference cohort of random sample of women without epilepsy (n=4357)...
February 7, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28168779/impact-of-risk-factors-for-perinatal-events-in-japan-introduction-of-a-newly-created-perinatal-event-score
#18
Yoshio Matsuda, Kemal Sasaki, Kaoru Kakinuma, Toshiyuki Kakinuma, Miki Tagawa, Ken Imai, Hiroaki Nonaka, Michitaka Ohwada, Shoji Satoh
AIM: A cohort study was performed to clarify the influence of risk factors on perinatal events (obstetric complications and/or perinatal deaths). METHODS: This cohort study reviewed 395 785 births from 2011 to 2013. Women with singleton pregnancies delivered after 22 weeks of gestation were included. The OR were determined on multivariate analysis. The perinatal event score (PES) for risk factors, which is the product of the OR of risk factors for obstetric complications, OR of risk factors for perinatal death, and OR of obstetric complications for perinatal death, was introduced to clarify the impact of each risk combination...
February 7, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28168638/the-relationship-between-the-latency-period-infection-markers-and-oxidant-and-antioxidant-states-in-women-with-preterm-premature-rupture-of-membranes
#19
N Ilhan, B K Aygun, H Gungor
BACKGROUND: A major cause of perinatal morbidity and mortality has been reported to be preterm premature rupture of membranes (PPROM). Our objective was to evaluate oxidant-antioxidant balance, infection parameters, time interval between rupture of membranes and delivery (latency period), and the relationship among all these parameters. METHODS: Seventy-five cases with PPROM between 24 and 34 gestational weeks were included in the study. A control group of 41 women who gave birth at term were considered as the control group...
February 6, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28166968/interspecies-somatic-cell-nuclear-transfer-in-asiatic-cheetah-using-nuclei-derived-from-post-mortem-frozen-tissue-in-absence-of-cryo-protectant-and-in%C3%A2-vitro-matured-domestic-cat-oocytes
#20
F Moulavi, S M Hosseini, N Tanhaie-Vash, S Ostadhosseini, S H Hosseini, M Hajinasrollah, M H Asghari, H Gourabi, A Shahverdi, A D Vosough, M H Nasr-Esfahani
Recent accomplishments in the field of somatic cell nuclear transfer (SCNT) hold tremendous promise to prevent rapid loss of animal genetic resources using ex situ conservation technology. Most of SCNT studies use viable cells for nuclear transfer into recipient oocytes. However, preparation of live cells in extreme circumstances, in which post-mortem material of endangered/rare animals is improperly retained frozen, is difficult, if not impossible. This study investigated the possibility of interspecies-SCNT (iSCNT) in Asiatic cheetah (Acinonyx jubatus venaticus), a critically endangered subspecies, using nuclei derived from frozen tissue in absence of cryo-protectant at -20 °C and in vitro matured domestic cat oocytes...
March 1, 2017: Theriogenology
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