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Bis(ortho-)chelated Monoanionic Bisphosphinoaryl Ruthenium(II) Complexes: Synthesis, Characterization and Reactivity

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Chinese Journal of Chemistry 2002年第3期20卷 207-213页

作者： van klink Gerard P. M DANI Paulo van KOTEN Gerard Department of Metal-Mediated Synthesis Debye Institute Utrecht UniversityDepartment of Metal-Mediated Synthesis Debye Institute Utrecht UniversityDepartment of Metal-Mediated Synthesis Debye Institute Utrecht University Padualaan 8 3584 CH Utrech

Bisphosphinoaryl ruthenium(Ⅱ) compounds are synthesized using two distinctsynthetic routes. One route, direct cycloruthenation, consists of the reaction of the parent arenecompound R-PCHP with [RuCl_2 (PPh_3)_3] in chlorinated solvents. However, this route suffers frommajor drawbacks because HCl is formed as well as free triphenylphoshine. The other route, thetranscyclometalation reaction, involves the interconversion of one cyclometalated ligand metalcomplex, [RuCl (NCN) (PPh_3)], into another complex, [RuCl (R-PCP) (PPh_3)], with concomitantconsumption and formation of the corresponding arenes R-PCHP and NCHN, respectively.

关键词： ruthenium transcyclometalation reaction monoanionic terdentate P, C,P′-bisphosphinoaryl hydrogen transfer reaction

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Neurodevelopmental Outcome After Fetoscopic Laser Surgery for Twin-twin Transfusion Syndrome:A Systematic Review of Follow-up Studies from the Last Decade

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Maternal-Fetal Medicine 2020年第3期2卷 154-161页

作者： Knijnenburg Patricia J.C. Lopriore Enrico Oepkes Dick Vreeken Nienke Tan Ratna N.G.B. Rijken Monique van klink Jeanine M.M. Department of Pediatrics Division of NeonatologyLeiden University Medical CenterLeiden 2333 ZAThe Netherlands Department of Obstetrics Division of Fetal MedicineLeiden University Medical CenterLeiden 2333 ZAThe Netherlands Department of Pediatrics Division of Child and Adolescent PsychologyLeiden University Medical CenterLeiden 2333 ZAThe Netherlands

Objective:To review the literature on long-term neurodevelopmental outcome after fetoscopic laser surgery for twin-twin transfusion syndrome(TTTS).Methods:A literature search in PubMed,Embase,Emcare,Web of Science,Cochrane library,and Academic Search Premier was *** criteria were studies between 2009 and 2019 in TTTS-survivors treated with fetoscopic laser surgery and followed-up after the neonatal period with cognitive developmental tests and neurologic *** criteria were non-English articles and reviews,case reports,letters,and ***:Nineteen articles were ***-term severe neurodevelopmental impairment(NDI)was reported by seven and ranged from 4.0%to 18.0%with a mean of 9.7%(95%confidence interval(CI):7.8-11.5).The prevalence of cerebral palsy ranged from 1.6%to 18.2%,with a mean of 5.1%(95%CI:4.1-6.2).The mean prevalence of minor impairment was 13.7%(95%CI:11.4-16.0).However,only 78.9%(15/19)studies used a validated neurodevelopmental *** studies lack uniform definitions of primary outcome,timing of follow-up,inclusion criteria,and methods,adequate comparison is ***:The prevalence of severe NDI and cerebral palsy after fetoscopic laser surgery for TTTS in the last decade remains stable around 9.7%and 5.1%,*** agreements on primary outcomes,methods,and follow-up are necessary to improve the knowledge of NDI in TTTS-survivors.

关键词： Cerebral palsy Fetofetal transfusion Fetoscopic laser surgery Neurodevelopmental impairment Neurodevelopmental outcome

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Twin Anemia Polycythemia Sequence: Knowledge and Insights After 15 Years of Research

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Maternal-Fetal Medicine 2021年第1期3卷 33-41页

作者： Lisanne S.A.Tollenaar Enrico Lopriore Dick Oepkes Monique C.Haak Frans J.C.M.Klumper Johanna M.Middeldorp Jeanine M.M.van klink Femke Slaghekke Department of Obstetrics Division of Fetal therapyLeiden University Medical CenterLeiden 2333 ZAThe Netherlands Department of Pediatrics Division of NeonatologyLeiden University Medical CenterLeiden 2333 ZAThe Netherlands

Twin anemia polycythemia sequence (TAPS) is a chronic form of unbalanced feto-fetal transfusion through minuscule placental anastomoses in monochorionic twin pregnancies, leading to anemia in the donor twin and polycythemia in the recipient twin. TAPS can occur spontaneously in up to 5% of monochorionic twins or can arise in 2%-16% of cases after incomplete laser surgery for twin-twin transfusion syndrome. TAPS can develop across the entire second and third trimester. Antenatal diagnosis for TAPS is reached via Doppler measurement of the fetal middle cerebral artery peak systolic velocity, showing an increased velocity in the donor, combined with a decreased velocity in the recipient. Treatment options for TAPS include expectant management, preterm delivery, intrauterine blood transfusion with or without a partial exchange transfusion, fetoscopic laser surgery and selective feticide. The best treatment option is unclear and is currently being investigated in an international multicenter randomized trial (the TAPS trial). Spontaneous fetal demise occurs in 5%-11% of TAPS twins, more often in donors (8%-18%) than in recipients (2%-5%). Severe long-term neurodevelopmental impairment is seen in 9% of TAPS twins, with donors having an increased risk for cognitive impairment and hearing problems (15%).

关键词： Polycythemia Anemia Twin anemia polycythemia sequence Monochorionic twins Twin-twin transfusion syndrome Placenta

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