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https://www.readbyqxmd.com/read/28809106/structural-characteristics-and-function-of-a-new-kind-of-thermostable-trehalose-synthase-from-thermobaculum-terrenum
#1
Junqing Wang, Xudong Ren, Ruiming Wang, Jing Su, Feng Wang
Trehalose has important applications in the food industry and pharmaceutical manufacturing. The thermostable enzyme trehalose synthase from Thermobaculum terrenum (TtTS) catalyzes the reversible interconversion of maltose and trehalose. Here, we investigated the structural characteristics of TtTS in complex with the inhibitor TriS. TtTS exhibits the typical three domain glycoside hydrolase family 13 structure. The catalytic cleft consists of Asp202-Glu244-Asp310 and various conserved substrate-binding residues...
August 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28802743/tungsten-accumulation-by-highly-tolerant-marine-hydrothermal-sulfitobacter-dubius-strains-carrying-a-tupbca-cluster
#2
Carina Coimbra, Pedro Farias, Rita Branco, Paula V Morais
Tungsten (W) has industrial and economic importance, and is in the European Union list of metals with a high supply risk. It is used by living organisms, which transport it into the cell, in the form of tungstate ion (WO4(2-)), using three different ABC-type transporters from the specific W-uptake system coded by tupABC gene cluster. In this study, strains from a collection recovered from deep-sea hydrothermal sediments were selected according to their ability to tolerate metals and to possess the tup genetic determinants...
July 19, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28761987/depression-anxiety-and-mental-health-service-experiences-of-women-with-a-twin-twin-transfusion-syndrome-pregnancy
#3
Lynn Falletta, Rebecca Fischbein, Surya Sruthi Bhamidipalli, Lauren Nicholas
Symptoms of emotional distress during and after pregnancy may be introduced or exacerbated by unexpected medical conditions in the mother or fetus. Twin-twin transfusion syndrome (TTTS), which accounts for 17% of fetal deaths in twins and entails substantial medical uncertainty, may represent a particularly challenging pregnancy experience. Yet, little is known about the impact of TTTS on women's emotional health. We retrospectively surveyed 350 women who experienced a TTTS pregnancy about their experiences at three time points (prior to, during, and after pregnancy) to examine symptoms of anxiety and depression, mental health diagnoses, thoughts of seeking mental healthcare, help received, and preferred mental health services...
July 31, 2017: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/28730318/renal-function-in-neonates-with-twin-twin-transfusion-syndrome-treated-with-or-without-fetoscopic-laser-surgery
#4
Lianne Verbeek, Faiez A Joemmanbaks, Jacoba M E Quak, Ram N Sukhai, Johanna M Middeldorp, Dick Oepkes, Enrico Lopriore
The aim of this study is to investigate the short-term renal function in neonates with twin-twin transfusion syndrome (TTTS), treated with fetoscopic laser surgery (laser group) or conservatively (non-laser group). Creatinine and urea levels and urine output were recorded in the first week after birth. Primary outcome was short-term renal dysfunction, defined as a creatinine level of >100 μmol/L during the first week postpartum. We evaluated 312 twins (laser group, n = 274; non-laser group, n = 38)...
July 20, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28713801/an-evaluation-of-a-train-the-trainer-workshop-for-social-service-workers-to-develop-community-based-family-interventions
#5
Agnes Y Lai, Sunita M Stewart, Moses W Mui, Alice Wan, Carol Yew, Tai Hing Lam, Sophia S Chan
INTRODUCTION: Evaluation studies on train-the-trainer workshops (TTTs) to develop family well-being interventions are limited in the literature. The Logic Model offers a framework to place some important concepts and tools of intervention science in the hands of frontline service providers. This paper reports on the evaluation of a TTT for a large community-based program to enhance family well-being in Hong Kong. METHODS: The 2-day TTT introduced positive psychology themes (relevant to the programs that the trainees would deliver) and the Logic Model (which provides a framework to guide intervention development and evaluation) for social service workers to guide their community-based family interventions...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28709445/twin-twin-transfusion-syndrome-study-protocol-for-developing-disseminating-and-implementing-a-core-outcome-set
#6
Asma Khalil, Helen Perry, James Duffy, Keith Reed, Ahmet Baschat, Jan Deprest, Kurt Hecher, Liesbeth Lewi, Enrico Lopriore, Dick Oepkes
BACKGROUND: Twin-Twin Transfusion Syndrome (TTTS) is associated with an increased risk of perinatal mortality and morbidity. Several treatment interventions have been described for TTTS, including fetoscopic laser surgery, amnioreduction, septostomy, expectant management, and pregnancy termination. Over the last decade, fetoscopic laser surgery has become the primary treatment. The literature to date reports on many different outcomes, making it difficult to compare results or combine data from individual studies, limiting the value of research to guide clinical practice...
July 14, 2017: Trials
https://www.readbyqxmd.com/read/28695721/aortic-isthmus-shunt-dynamics-in-normal-and-complicated-monochorionic-pregnancies
#7
Viola Seravalli, Dana Block-Abraham, Cyrethia McShane, Sarah Millard, Ahmet Baschat, Jena Miller
OBJECTIVE: To study fetal aortic isthmus (AoI) shunt dynamics in monochorionic (MC) twins. METHODS: Normal and complicated MC pregnancies were prospectively enrolled. The relationship of isthmus flow index (IFI) with Doppler parameters of umbilical artery (UA), descending aorta, middle cerebral artery, and ductus venosus and with left and right ventricular cardiac output and stroke volume was studied. RESULTS: The IFI was obtained in 180 examinations from 48 pregnancies (24 twin-twin transfusion syndrome, TTTS; 4 selective intrauterine growth restriction, sIUGR; 12 TTTS + sIUGR; and 8 uncomplicated)...
July 11, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28609165/mcda-twin-pregnancy-is-it-ttts-or-taps
#8
Thomas Hussey, Neha Shah, Abha Govind
No abstract text is available yet for this article.
June 13, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28593771/-rare-forms-of-feto-fetal-transfusion-in-a-clinical-practice
#9
H Kováčová, D Matura, O Šimetka, J Pannová, P Delongová
OBJECTIVE: To analyze monochorionic twin pregnancies with twin anemia polycythemia sequence (TAPS) and acute peripartal twin to twin syndrome (aTTTS), to compare their prenatal management and perinatal outcome. METHODS: Retrospective analysis of monochorionic biamniotic twin pregnancies without signs of chronic TTTS within a period 10/2010 to 10/2013. Further selection of cases with haemoglobin difference in neonates greater than 50 g/l was made, type of feto-fetal haemorrhage was determined and their prenatal and postnatal characteristics were described...
2017: Ceská Gynekologie
https://www.readbyqxmd.com/read/28593770/-retrospective-analysis-of-monochorionic-twin-pregnancies-born-in-the-institute-for-the-care-of%C3%A2-mother-and-child-between-2012-2015
#10
K Běhávková, L Krofta, K Macková, J Vojtěch, L Hašlík, R Pock, L Hympánová, M Kučerová, H Heřman, Z Straňák, J Feyereisl
OBJECTIVE: The purpose of this study was to describe monochorionic twin pregnancies and their complications, born between 24th and 37th week of gestation in the Institute for the Care of Mother and Child in years 2012-2015. DESIGN: Retrospective cohort. SETTING: The Institute for the Care of Mother and Child, Praha. METHODS: From 2012 to 2015 we observed 177 monochorionic twin pregnancies from which two or one viable fetuses were born, or both fetuses died in utero...
2017: Ceská Gynekologie
https://www.readbyqxmd.com/read/28591652/fetal-therapy-model-of-myelomeningocele-with-three-dimensional-skin-using-amniotic-fluid-cell-derived-induced-pluripotent-stem-cells
#11
Kazuhiro Kajiwara, Tomohiro Tanemoto, Seiji Wada, Jurii Karibe, Norimasa Ihara, Yu Ikemoto, Tomoyuki Kawasaki, Yoshie Oishi, Osamu Samura, Kohji Okamura, Shuji Takada, Hidenori Akutsu, Haruhiko Sago, Aikou Okamoto, Akihiro Umezawa
Myelomeningocele (MMC) is a congenital disease without genetic abnormalities. Neurological symptoms are irreversibly impaired after birth, and no effective treatment has been reported to date. Only surgical repairs have been reported so far. In this study, we performed antenatal treatment of MMC with an artificial skin using induced pluripotent stem cells (iPSCs) generated from a patient with Down syndrome (AF-T21-iPSCs) and twin-twin transfusion syndrome (AF-TTTS-iPSCs) to a rat model. We manufactured three-dimensional skin with epidermis generated from keratinocytes derived from AF-T21-iPSCs and AF-TTTS-iPSCs and dermis of human fibroblasts and collagen type I...
June 6, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28585788/-intestinal-complications-in-twin-to-twin-transfusion-syndrome-ttts-treated-by-laser-coagulation-lc
#12
A Sánchez-Galán, J L Encinas, E Antolín, A Vilanova, M Dore, P Triana, J L Bartha, M López-Santamaría
AIM OF THE STUDY: The hemodynamic imbalance due to placental vascular anastomoses in TTTS but also vascular changes generated after intrauterine treatment may lead to hypoxic-ischemic complications. Different intestinal complications in TTTS are reviewed in this paper. METHODS: Retrospective review of TTTS cases treated by laser coagulation (LC) from 2012-2015. Demographic data, fetal therapy, prenatal diagnosis (US, MRI) and perinatal outcome were recorded. We describe cases with intestinal complications and their postnatal management...
January 25, 2017: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/28557152/quantified-discordant-placental-echogenicity-in-twin-anemia-polycythemia-sequence-taps-and-middle-cerebral-artery-peak-systolic-velocities
#13
Christian Bamberg, Anke Diemert, Peter Glosemeyer, Kurt Hecher
OBJECTIVE: To quantify sonographic placental echogenicity in twin anemia-polycythemia sequence (TAPS) and to correlate it with middle cerebral artery peak systolic velocities (MCA-PSV). METHODS: We performed a retrospective search for consecutive TAPS cases between 16 and 36 weeks of gestation (MCA-PSV >1.5 MoM and <1.0 MoM in the anemic donor and polycythemic recipient, respectively) in our database of monochorionic twin gestations from January 2007 until December 2016...
May 27, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28549467/the-prediction-diagnosis-and-management-of-complications-in-monochorionic-twin-pregnancies-the-ommit-optimal-management-of-monochorionic-twins-study
#14
Fiona L Mackie, R Katie Morris, Mark D Kilby
BACKGROUND: Monochorionic twin pregnancies are at increased risk of complications due to sharing a single placenta and potentially developing unbalanced vascular anastomoses. Complications include twin-twin transfusion syndrome (TTTS) which affects 10-15% monochorionic twins, and if untreated has a 70-90% perinatal loss rate. We are currently unable to predict which twins will develop complications or to what severity. We have previously shown differences in angiogenic and placental growth factors in maternal blood in pregnancies complicated by TTTS compared to twin pregnancies not complicated by TTTS but matched for gestation...
May 26, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28544517/fetoscopic-laser-photocoagulation-for-amniotic-fluid-discordance-bordering-on-twin-twin-transfusion-syndrome-feasibility-perinatal-and-long-term-outcomes
#15
Katsusuke Ozawa, Rika Sugibayashi, Seiji Wada, Masahiro Sumie, Keisuke Ishii, Masahiko Nakata, Takeshi Murakoshi, Yushi Ito, Haruhiko Sago
AIM: This study investigated the feasibility and safety of fetoscopic laser photocoagulation (FLP) for amniotic fluid discordance (AFD) bordering on twin-twin transfusion syndrome (TTTS) with an absent or reverse end-diastolic velocity (AREDV) in the umbilical artery (UA), and evaluated the perinatal and long-term outcomes. METHODS: A prospective intervention study was performed between 20 + 0 and 25 + 6 weeks of gestation (UMIN000004165). AFD bordering on TTTS was defined as maximum vertical pocket (MVP) of amniotic fluid in one twin's sac ≤3 cm and amniotic fluid MVP in the other twin's sac ≥7 cm excluding TTTS...
May 19, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28487021/increased-risk-of-placental-abruption-after-solomon-laser-treatment-of-twin-twin-transfusion-syndrome
#16
M M Lanna, S Faiola, D Consonni, M A Rustico
To evaluate the relative risk of placental abruption in monochorionic (MC) twin pregnancies complicated with twin-to-twin transfusion syndrome (TTTS) and treated with endoscopic laser coagulation of placental vessels (ELCPV). A retrospective analysis from January 2004 and December 2015 of 373 TTTS pregnancies, treated with selective ELCPV until January 2012 (287 cases), after which the Solomon technique was introduced (86 cases), compared with 243 normal MC pregnancies. A significant improvement in perinatal survival was observed after the introduction of the Solomon technique when compared to the selective procedure (77% vs 54%, p < 0...
May 2017: Placenta
https://www.readbyqxmd.com/read/28477345/fetoscopic-laser-coagulation-in-1020-pregnancies-with-twin-to-twin-transfusion-syndrome-demonstrates-improvement-of-double-survival-rates
#17
W Diehl, A Diemert, D Grasso, S Sehner, K Wegscheider, K Hecher
OBJECTIVE: To investigate the growing experience and learning curve of fetoscopic laser coagulation of the placental vascular anastomoses in severe mid trimester twin-to-twin transfusion syndrome (TTTS) and its influence on perinatal outcome in a single center setting. METHODS: Between 01/1995 and 03/2013 we performed laser therapy in 1020 consecutive pregnancies with TTTS between 15.1 and 27.4 weeks of gestation. We compared perinatal outcome in blocks of five sequential groups...
May 6, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28460542/hematological-disorders-at-birth-in-complicated-monochorionic-twins
#18
REVIEW
Lianne Verbeek, Femke Slaghekke, Marieke Sueters, Johanna M Middeldorp, Frans J Klumper, Monique C Haak, Dick Oepkes, Enrico Lopriore
Monochorionic twins are at risk of severe complications including twin-twin transfusion syndrome (TTTS), twin anemia-polycythemia sequence (TAPS) and acute peripartum TTTS. The pathophysiology is based on inter-twin blood transfusion through placental vascular anastomoses. Areas covered: This review focuses on the incidence, management and outcome of neonatal hematological complications at birth in TTTS, TAPS and acute peripartum TTTS. Expert commentary: Hematological disorders are often present at birth in monochorionic twins and include acute or chronic anemia, polycythemia and thrombocytopenia...
June 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28455084/recipient-umbilical-artery-elongation-redundancy-in-twin-twin-transfusion-syndrome
#19
Roopali Donepudi, Lovepreet K Mann, Christoph Wohlmuth, Anthony Johnson, Michael W Bebbington, Kenneth J Moise, David S Boudreaux, Helena Gardiner, Ramesha Papanna
BACKGROUND: Chronic hypertension in adults causes arterial lengthening in major arteries, but the effects of early fetal hypertension on the twin-twin transfusion syndrome recipient's vascular architecture remains unknown. OBJECTIVE: We hypothesize that arterial cord redundancy is related to recipient hypertension and subsequent heart failure. Our objectives were to: (1) establish a 3-dimensional color Doppler ultrasound method of measuring umbilical arterial length relative to its corresponding venous segment in the umbilical cord using artery vein angle; (2) compare recipient artery vein angle to gestational age-matched controls; and (3) test the association of artery vein angle with recipient heart failure...
April 25, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28454700/what-is-the-impact-of-placental-tissue-damage-after-laser-surgery-for-twin-twin-transfusion-syndrome-a-secondary-analysis-of-the-solomon-trial
#20
Joost Akkermans, Saskia M de Vries, Depeng Zhao, Suzanne H P Peeters, Frans J Klumper, Johanna M Middeldorp, Dick Oepkes, Femke Slaghekke, Enrico Lopriore
BACKGROUND: The introduction of the Solomon technique for the treatment of twin-twin transfusion syndrome (TTTS) increased placental exposure to laser energy. This study aims to identify the impact of power and energy used in laser treatment on placental tissue and pregnancy outcome. METHODS: Pictures of all dye-injected placentas since the start of the Solomon trial were analyzed. Placental damage was scored using a grading system including visual scar depth and affected proportion of the vascular equator...
April 2017: Placenta
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