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Vadset TA, Rajaram A, Hsiao CH, Kemigisha Katungi M, Magombe J, Seruwu M, Kaaya Nsubuga B, Vyas R, Tatz J, Playter K, Nalule E, Natukwatsa D, Wabukoma M, Neri Perez LE, Mulondo R, Queally JT, Fenster A, Kulkarni AV, Schiff SJ, Grant PE, Mbabazi Kabachelor E, Warf BC, Sutin JDB, Lin PY. Improving Infant Hydrocephalus Outcomes in Uganda: A Longitudinal Prospective Study Protocol for Predicting Developmental Outcomes and Identifying Patients at Risk for Early Treatment Failure after ETV/CPC. Metabolites 2022; 12:78. [PMID: 35050201 PMCID: PMC8781620 DOI: 10.3390/metabo12010078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 01/06/2023] Open
Abstract
Infant hydrocephalus poses a severe global health burden; 80% of cases occur in the developing world where patients have limited access to neurosurgical care. Surgical treatment combining endoscopic third ventriculostomy and choroid plexus cauterization (ETV/CPC), first practiced at CURE Children's Hospital of Uganda (CCHU), is as effective as standard ventriculoperitoneal shunt (VPS) placement while requiring fewer resources and less post-operative care. Although treatment focuses on controlling ventricle size, this has little association with treatment failure or long-term outcome. This study aims to monitor the progression of hydrocephalus and treatment response, and investigate the association between cerebral physiology, brain growth, and neurodevelopmental outcomes following surgery. We will enroll 300 infants admitted to CCHU for treatment. All patients will receive pre/post-operative measurements of cerebral tissue oxygenation (SO2), cerebral blood flow (CBF), and cerebral metabolic rate of oxygen consumption (CMRO2) using frequency-domain near-infrared combined with diffuse correlation spectroscopies (FDNIRS-DCS). Infants will also receive brain imaging, to monitor tissue/ventricle volume, and neurodevelopmental assessments until two years of age. This study will provide a foundation for implementing cerebral physiological monitoring to establish evidence-based guidelines for hydrocephalus treatment. This paper outlines the protocol, clinical workflow, data management, and analysis plan of this international, multi-center trial.
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Affiliation(s)
- Taylor A. Vadset
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Ajay Rajaram
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Chuan-Heng Hsiao
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Miriah Kemigisha Katungi
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Joshua Magombe
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Marvin Seruwu
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Brian Kaaya Nsubuga
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Rutvi Vyas
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Julia Tatz
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Katharine Playter
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Esther Nalule
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Davis Natukwatsa
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Moses Wabukoma
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Luis E. Neri Perez
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Ronald Mulondo
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Jennifer T. Queally
- Department of Psychiatry, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA;
| | - Aaron Fenster
- Robarts Research Institute, Western University, London, ON N6A 3K7, Canada;
| | | | - Steven J. Schiff
- Center for Neural Engineering, Center for Infectious Disease Dynamics, Departments of Engineering Science and Mechanics, Neurosurgery, and Physics, The Pennsylvania State University, University Park, PA 16802, USA;
| | - Patricia Ellen Grant
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
- Department of Radiology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Edith Mbabazi Kabachelor
- CURE Children’s Hospital of Uganda, Mbale P.O. Box 903, Uganda; (M.K.K.); (J.M.); (M.S.); (B.K.N.); (E.N.); (D.N.); (M.W.); (R.M.); (E.M.K.)
| | - Benjamin C. Warf
- Department of Neurosurgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA;
| | - Jason D. B. Sutin
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Pei-Yi Lin
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA; (T.A.V.); (A.R.); (C.-H.H.); (R.V.); (J.T.); (K.P.); (L.E.N.P.); (P.E.G.); (J.D.B.S.)
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
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Carlson KD, Williams JM, Geiser U, Kim AM, Wang HH, Klemm RA, Kumar SK, Schlueter JA, Ferraro JR, Lykke KR, Wurz P, Parker DH, Sutin JDB, Schirber JE, Venturini EL, Stout P. The Central Bond 13C = 13C Isotope Effect for Superconductivity in the High-Tc β*-(ET)2l3 Phase and its Implications Regarding the Superconducting Pairing Mechanism in TTF-Based Organic Superconductors. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259308042907] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- K. Douglas Carlson
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Jack M. Williams
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Urs Geiser
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Aravinda M. Kim
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - H. Hau Wang
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Richard A. Klemm
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - S. Kalyan Kumar
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - John A. Schlueter
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - John. R. Ferraro
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Keith R. Lykke
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Peter Wurz
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | - Deborah Holmes Parker
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
- d Also at Department of Chemistry , University of California , Irvine , CA , 92717
| | - Jason D. B. Sutin
- a Chemistry and Materials Science Divisions Argonne National Laboratory , Argonne, Illinois , 60439
| | | | | | - Phil Stout
- c Bio-Rad, Digilab Division , Cambridge , Massachusetts , 92717
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Eckhoff DA, Sutin JDB, Clegg RM, Gratton E, Rogozhina EV, Braun PV. Optical Characterization of Ultrasmall Si Nanoparticles Prepared through Electrochemical Dispersion of Bulk Si. J Phys Chem B 2005; 109:19786-97. [PMID: 16853559 DOI: 10.1021/jp052214e] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studying the properties and stability of silicon nanoparticles (Si-np) in aqueous environments may lead to novel applications in biological systems. In this work, we use absorption and photoluminescence (PL) spectroscopy to characterize ultrasmall Si-np prepared through anodic etching and ultrasonic fractionation of a crystalline Si wafer. Their behavior is studied over time in 2-propanol and during treatments with water, NaOH, HCl, and H(2)O(2). The observed population is divided into two types of material: bright species consisting of well-etched Si-np, approximately 1 nm in diameter, and dark species derived from partially etched or aggregated Si structures. The dark material is seen by its scattering in the 2-propanol and water solutions and is largely removed via precipitation with the NaOH or HCl treatment. The bright material includes three distinct species with their respective emissions in the UV-B, UV-A, and hard-blue regions of the spectrum. The hard-blue PL is shown to have a simple pH dependence with a pK(a) approximately 3, providing an important insight into its chemical origin and signaling for possible application of Si-np as environmental probes. Our results offer some potential for tailoring the PL properties of ultrasmall Si-np through control of their surface chemistry.
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Affiliation(s)
- Dean A Eckhoff
- Department of Physics and Laboratory for Fluorescence Dynamics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801, USA.
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