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Tran TK, Ha PTT, Henry RJ, Nguyen DNT, Tuyen PT, Liem NT. Polyphenol Contents, Gas Chromatography-Mass Spectrometry (GC-MS) and Antibacterial Activity of Methanol Extract and Fractions of Sonneratia Caseolaris Fruits from Ben Tre Province in Vietnam. J Microbiol Biotechnol 2024; 34:94-102. [PMID: 38282409 PMCID: PMC10840467 DOI: 10.4014/jmb.2304.04019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/18/2023] [Accepted: 09/20/2023] [Indexed: 01/30/2024]
Abstract
Plants contain a large number of phytochemical components, many of which are known as bioactive compounds and responsible for the expression of various pharmacological activities. The extract of Sonneratia caseolaris fruit collected in Vietnam was investigated for its total phenolic and total flavonoid contents using methanol solvent and different fractions of S. caseolaris fruits (hexane, ethyl acetate, n-butanol, and aqueous). GC-MS analysis was conducted to identify the bioactive chemical constituents occurring in the active extract. Further, the antibacterial activity was tested in vitro on bacterial isolates, namely Escherichia coli, Staphylococcus aureus, and Bacillus subtilis, using the disc diffusion method on tryptic soya agar (TSA) medium. The methanol extract showed high total flavonoid (82.3 ± 0.41 mg QE/g extract) and phenolic (41.0 ± 0.34 mg GAE/g extract) content. GC-MS of the methanol extract and different fractions of S. caseolaris fruits detected 20 compounds, principally fatty alcohols, fatty acids, phenols, lipids, terpenes derivatives, and carboxylic acids derivatives. A 50 mg/ml concentration of methanol extract had the strongest antibacterial activity on E. coli, S. aureus, and B. subtilis. Furthermore, ethyl acetate, aqueous, and n-butanol fractions inhibited S. aureus and B. subtilis the most. The results of the present study suggested that the fruits of S. caseolaris are rich sources of phenolic compounds that can contribute to safe and cost-effective treatments.
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Affiliation(s)
- Thien khanh Tran
- Chemical Engineering in Advanced Materials and Renewable Energy Research Group, School of Technology, Van Lang University, Ho Chi Minh City 700000, Vietnam
- Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, 700000, Vietnam
| | - Pham Thi Thu Ha
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia
- High Agricultural Technology Research Institute for Mekong Delta, 94955, Vietnam (HATRI)
| | - Robert. J. Henry
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD 4072, Australia
| | | | - Phung Thi Tuyen
- Department of Forest Plant, Faculty of Forest Resources and Environmental Management, Vietnam National University of Forestry, Hanoi, 13417, Vietnam
| | - Nguyen Thanh Liem
- Faculty of Natural Sciences, Quynhon University, Quynhon, Binhdinh 590000, Vietnam
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2
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Le HTT, Liem NT, Giang NC, Hoang PH, Minh Phuong NT. Improving electrochemical performance of hybrid electrode materials by a composite of nanocellulose, reduced oxide graphene and polyaniline. RSC Adv 2023; 13:22375-22388. [PMID: 37497085 PMCID: PMC10366877 DOI: 10.1039/d3ra03172a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/17/2023] [Indexed: 07/28/2023] Open
Abstract
Novel ternary composites of polyaniline (PANI), reduced graphene oxide (RGO), and cellulose nanofibers (CNFs) are prepared by a chemical method for hybrid supercapacitors. CNFs were extracted from sugarcane bagasse waste in sugar production, by physicochemical processes. The composites were investigated as electrode-active materials for hybrid supercapacitors. The obtained results revealed that the presence of RGO and CNFs in the composites led to enhanced electrochemical performances, such as capacitance, rate capability, and long-term cyclability of the composite. The optimal composite of CNFs/RGO/PANI with a weight ratio of 4/16/80 can deliver the highest specific capacitance at 566.2 F g-1 under an applied current of 1 A g-1. After 1000 cycles of repetitive charge and discharge, the optimal composite retains 85.4% of its initial capacitance, whereas the PANI electrode obtained only 36.7% under the same conditions. Moreover, the supercapacitive performance is also strongly dependent on the component of the ternary composites. Overall, the composite is a promising material for hybrid supercapacitors; and the CNF component is a renewable material and a product of waste materials.
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Affiliation(s)
- Hang T T Le
- School of Chemical Engineering, Hanoi University of Science and Technology 1 Dai Co Viet, Hai Ba Trung Hanoi Vietnam
| | - Nguyen Thanh Liem
- School of Chemical Engineering, Hanoi University of Science and Technology 1 Dai Co Viet, Hai Ba Trung Hanoi Vietnam
| | - Nguyen Chau Giang
- School of Chemical Engineering, Hanoi University of Science and Technology 1 Dai Co Viet, Hai Ba Trung Hanoi Vietnam
| | - Phan Huy Hoang
- School of Chemical Engineering, Hanoi University of Science and Technology 1 Dai Co Viet, Hai Ba Trung Hanoi Vietnam
| | - Nguyen Thi Minh Phuong
- School of Chemical Engineering, Hanoi University of Science and Technology 1 Dai Co Viet, Hai Ba Trung Hanoi Vietnam
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Nguyen MQ, Bui HTH, Tuyet ANT, Nhung TTH, Hoang DM, Liem NT, Hoang VT. Comparative Bioactivity Analysis for Off-the-Shelf and Culture-Rescued Umbilical Cord-Derived Mesenchymal Stem/Stromal Cells in a Xeno- and Serum-Free Culture System. Cell Transplant 2021; 30:9636897211039441. [PMID: 34538123 PMCID: PMC8718162 DOI: 10.1177/09636897211039441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We recently reported a standardized xeno- and serum-free culture platform to isolate and expand umbilical cord-derived mesenchymal stem/stromal cells (UC-MSCs). Comparing populations from the same passage, cells that were cryopreserved and culture-rescued exhibited characteristics similar to those of their fresh counterparts, continuously cultured cells without interim cryopreservation. The culture rescue after thawing allowed for the cells to be fully recovered. However, since it would be more cost-effective and timesaving if cryopreserved cells can be used as an off-the-shelf product, we set out to compare the bioactivity of freshly thawed UC-MSCs versus culture-rescued UC-MSCs of the same batch that were recultured for an additional passage under our xeno- and serum-free protocol. UC-MSCs showed high viability in both the freshly thawed and the re-cultured group. Both populations displayed a similar proliferation capacity which is indicated by a comparable population doubling time and colony-forming ability. Both freshly thawed and culture-rescued UC-MSCs expressed the characteristic immunophenotype and were capable of differentiating into osteocytes, chondrocytes, and adipocytes. On the other hand, culture-rescued cells appeared to be more potent in immunosuppression than freshly thawed cells. In conclusion, freshly thawed and culture-rescued cell products share comparable bioactivity in cell growth and proliferation, immunophenotype, and differentiation potential. However, the culture-rescued cells that were allowed to grow for an additional passage appear to display a more favorable immunomodulatory potential when compared to their freshly thawed parent cells.
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Affiliation(s)
- Minh Quang Nguyen
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam.,VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Hue T H Bui
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam.,Vinmec Institute of Applied Science and Regenerative Medicine (VIASRM), Vinmec Healthcare System, Hanoi, Vietnam
| | - Anh Nguyen Thi Tuyet
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam.,Vinmec Institute of Applied Science and Regenerative Medicine (VIASRM), Vinmec Healthcare System, Hanoi, Vietnam
| | - Trinh Thi Hong Nhung
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam.,Vinmec Institute of Applied Science and Regenerative Medicine (VIASRM), Vinmec Healthcare System, Hanoi, Vietnam
| | - Duc M Hoang
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam
| | - Nguyen Thanh Liem
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam
| | - Van T Hoang
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Healthcare System, Hanoi, Vietnam
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Anh BV, Thao CT, Cuong PT, Thuy NTT, Diem HH, Van Khanh BT, Hue BTH, Uyen TTT, Tu ND, Hoai TTT, Thanh NL, Liem NT, Nhung HTM. Vγ9γδ T Cell Induction by Human Umbilical Cord Blood Monocytes-Derived, Interferon-α-Stimulated Dendritic Cells. Cancer Control 2021; 27:1073274820974025. [PMID: 33222507 PMCID: PMC7791440 DOI: 10.1177/1073274820974025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dendritic cells (DC) are professional antigen-presenting cells that activate T
cells to kill cancer cells. The extracellular products of DCs have also been
reported to perform the same function. In this study, we examined the in
vitro differentiation of umbilical cord blood monocytes into DCs in
the presence of GM-CSF, and interferon (IFN)-α. The resulting DC population
(called IFN-DCs) were then matured in the presence of TNF-α, and pulsed with
total protein extracted from A549 cancer cell line. The pulsed DCs and their
conditioned medium were then used to stimulate allogeneic lymphocytes (alloLym).
The proliferation and cytotoxicity of alloLym were then determined. The results
showed that after 5 days of differentiation, the stimulated monocytes had the
typical morphology and characteristic surface markers of DCs. Both unpulsed and
pulsed IFN-DCs can induce the proliferation of alloLym, especially Vγ9γδ T
cells. The conditioned medium from pulsed and unpulsed IFN-DCs culture also
prompted the growth of Vγ9γδ T cells. Moreover, alloLym stimulated with pulsed
DCs and their conditioned medium had a greater cytotoxic effect on A549 cells
than the ones that were not stimulated. Our results indicated that IFN-DCs and
their conditioned medium could induce the anti-tumor immunity in
vitro, providing evidence for application of cord blood
monocytes-derived, interferon-α- stimulated dendritic cells and their
extracellular products in anti-cancer therapy.
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Affiliation(s)
- Bui Viet Anh
- VNU University of Science, Vietnam National University, Hanoi, Vietnam.,Vinmec Hightech Center, Vinmec Healthcare system, Hanoi, Vietnam
| | - Chu Thi Thao
- Vinmec Hightech Center, Vinmec Healthcare system, Hanoi, Vietnam
| | - Pham Thi Cuong
- VNU University of Science, Vietnam National University, Hanoi, Vietnam.,Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam
| | - Nguyen Thi Thu Thuy
- VNU University of Science, Vietnam National University, Hanoi, Vietnam.,Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam
| | - Hoang Huong Diem
- VNU University of Science, Vietnam National University, Hanoi, Vietnam.,Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam
| | - Bui Thi Van Khanh
- VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Bui Thi Hong Hue
- Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam.,College of Health Sciences, Vin University, Hanoi, Vin homes Ocean Park, Hanoi, Vietnam
| | - Than Thi Trang Uyen
- Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam.,College of Health Sciences, Vin University, Hanoi, Vin homes Ocean Park, Hanoi, Vietnam
| | - Nguyen Dac Tu
- Vinmec Hightech Center, Vinmec Healthcare system, Hanoi, Vietnam
| | | | - Nguyen Lai Thanh
- VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Nguyen Thanh Liem
- Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam.,College of Health Sciences, Vin University, Hanoi, Vin homes Ocean Park, Hanoi, Vietnam
| | - Hoang Thi My Nhung
- VNU University of Science, Vietnam National University, Hanoi, Vietnam.,Vinmec Research Institute of Stem cells and Gene Technology, Vinmec Healthcare system, Hanoi, Vietnam
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Abstract
Choledochal cyst (CC) is a disease with a strong Asian preponderance. As laparoscopic surgery has become mainstay in its treatment, the experience in these countries has been phenomenal. However, there are many contentious issues related with the laparoscopic management of CC. In this review article, we will try to answer the contentious questions related to the laparoscopic management of CC. The issues related to aetiology, classification, surgical technique, type of biliary anastomosis, intrahepatic stones and malignancy are discussed. We also discuss the current and future considerations of laparoscopic management with reference to it becoming a gold standard. This article describes the standard surgical approach and will discuss its technical nuances. This article will also discuss the outcome of treatment in different settings of low- and middle-income countries based on lessons learnt by the authors from their experience and research.
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Affiliation(s)
- Nguyen Thanh Liem
- Department of Pediatric Surgery, National Children Hospital, Hanoi; Department of Pediatric Surgery, Vinmec Research Institute of Stemcell and Gene Technology, Hà Nôi, Vietnam
| | - Vikesh Agrawal
- Department of Surgery, Division of Pediatric Surgery, Netaji Subhash Chandra Bose Medical College, Jabalpur, Madhya Pradesh, India
| | - Dexter S Aison
- Department of Pediatric Surgery, Philippine Children's Medical Center, Quezon City, Philippines
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Pollack TM, Nhung VTT, Vinh DTN, Hao DT, Trang LTT, Duc PA, Kinh NV, Dung NTH, Dung DL, Ninh NT, Huyen HTT, Huy VX, Hai DM, Khanh TH, Hien NTT, Khuong PTA, Trong NT, Lam NV, Phinh VN, Phuong DT, Duat ND, Liem NT, Binh NT, Chi NK, Yen LN, Cosimi L. Building HIV healthcare worker capacity through telehealth in Vietnam. BMJ Glob Health 2020; 5:e002166. [PMID: 32337087 PMCID: PMC7170421 DOI: 10.1136/bmjgh-2019-002166] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/12/2020] [Accepted: 03/15/2020] [Indexed: 11/30/2022] Open
Abstract
Development of a robust technical assistance system is an essential component of a sustainable HIV response. Vietnam’s National HIV Program is transitioning from a largely donor-funded programme to one primarily supported by domestic resources. Telehealth interventions are increasingly being used for training, mentoring and expert consultation in high-resource settings and hold significant potential for use as a tool to build HIV health worker capacity in low and middle-income countries. We designed, implemented and scaled up a novel HIV telehealth programme for Vietnam, with the goal of building a sustainable training model to support the country’s HIV workforce needs. Over a 4-year period, HIV telehealth programmes were initiated in 17 public institutions with participation of nearly 700 clinical sites across 62 of the 63 provinces in the country. The telehealth programme was used to deliver certificate training courses, provide clinical mentoring and case-based learning, support programme implementation, provide coaching in quality improvement and disseminate new guidelines and policies. Programme evaluation demonstrated improved health worker self-reported competence in HIV care and treatment and high satisfaction among the programme participants. Lessons learnt from Vietnam’s experience with telehealth can inform country programmes looking to develop a sustainable approach to HIV technical assistance and health worker capacity building.
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Affiliation(s)
- Todd M Pollack
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam.,Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Vo Thi Tuyet Nhung
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Ho Chi Minh City, Vietnam
| | - Dang Thi Nhat Vinh
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Ho Chi Minh City, Vietnam
| | - Duong Thi Hao
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Ho Chi Minh City, Vietnam
| | - Le Thi Thu Trang
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam
| | - Pham Anh Duc
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam
| | | | | | - Duong Lan Dung
- National Hospital of Obstetrics and Gynaecology, Hanoi, Vietnam
| | | | | | - Vo Xuan Huy
- Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
| | - Duong Minh Hai
- Provincial AIDS Committee of HCMC, Ho Chi Minh City, Vietnam
| | - Truong Huu Khanh
- Department of Infectious Diseases, Pediatric Hospital No 1, Ho Chi Minh City, Vietnam
| | | | | | | | | | - Vu Ngoc Phinh
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam
| | - Do Thi Phuong
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam
| | - Nguyen Duc Duat
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam
| | - Nguyen Thanh Liem
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Ho Chi Minh City, Vietnam
| | - Nguyen Thanh Binh
- The Partnership for Health Advancement in Vietnam, Beth Israel Deaconess Medical Center, Hanoi, Vietnam
| | - Nguyen K Chi
- Centers for Disease Control and Prevention, Ho Chi Minh City, Vietnam
| | - Le Ngoc Yen
- Centers for Disease Control and Prevention, Hanoi, Vietnam
| | - Lisa Cosimi
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
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Liem NT, Chinh VD, Phuong DTM, Van Doan N, Forsyth NR, Heke M, Thi PAN, Nguyen XH. Outcomes of Bone Marrow-Derived Mononuclear Cell Transplantation for Patients in Persistent Vegetative State After Drowning: Report of Five Cases. Front Pediatr 2020; 8:564. [PMID: 33014944 PMCID: PMC7511512 DOI: 10.3389/fped.2020.00564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 08/03/2020] [Indexed: 11/13/2022] Open
Abstract
Aim: Anoxic brain injury (ABI) due to non-fatal drowning may cause persistent vegetative state (VS) that is currently incurable. The aim of this paper is to present the safety and feasibility of autologous bone marrow-derived mononuclear cell (BMMNC) transplantation in five drowning children surviving in persistent VS. Methods: We used BMMNC as a novel candidate therapeutic tool in a pilot phase-I study for five patients affected by neurological sequelae after near-death drowning. Autologous BMMNCs were freshly isolated using Ficoll gradient centrifugation then infused intrathecally to five patients. The number of transplantation varied from two to four times depending on the motor function improvement of patient after transplantation. Clinical therapeutic effects were evaluated using gross motor function measure and muscle spasticity rating scales, cognitive assessments, and brain MRI before and after cell administrations. Results: Six months after BMMNC transplantation, no serious complications or adverse events were reported. All five patients displayed improvement across the major parameters of gross motor function, cognition, and muscle spasticity. Three patients displayed improved communication including the expression of words. In particular, one patient remarkably reduced cerebral atrophy, with nearly normal cerebral parenchyma after BMMNC transplantation. Conclusions: Autologous BMMNC transplantation for the treatment of children in persistent VS after drowning is safe, feasible, and can potentially improve motor function and cognition and reduce muscle spasticity. These results pave the way for a future phase II clinical trial to evaluate the efficacy of the therapy.
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Affiliation(s)
- Nguyen Thanh Liem
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Health Care System, Hanoi, Vietnam.,College of Health Sciences, VinUniversity, Hanoi, Vietnam
| | - Vu Duy Chinh
- Vinmec Times City International Hospital, Vinmec Healthcare System, Hanoi, Vietnam
| | - Dam Thi Minh Phuong
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Health Care System, Hanoi, Vietnam.,College of Health Sciences, VinUniversity, Hanoi, Vietnam
| | - Ngo Van Doan
- Vinmec Times City International Hospital, Vinmec Healthcare System, Hanoi, Vietnam
| | - Nicholas R Forsyth
- Institute for Science & Technology in Medicine, Keele University, Keele, United Kingdom
| | - Michael Heke
- Department of Biology, Stanford University, Stanford, CA, United States
| | | | - Xuan-Hung Nguyen
- Vinmec Research Institute of Stem Cell and Gene Technology (VRISG), Vinmec Health Care System, Hanoi, Vietnam.,College of Health Sciences, VinUniversity, Hanoi, Vietnam
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Liem NT, Huyen TL, Huong LT, Doan NV, Anh BV, Anh NTP, Tung DT. Outcomes of Bone Marrow Mononuclear Cell Transplantation for Neurological Sequelae Due to Intracranial Hemorrhage Incidence in the Neonatal Period: Report of Four Cases. Front Pediatr 2019; 7:543. [PMID: 32039110 PMCID: PMC6993568 DOI: 10.3389/fped.2019.00543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 12/12/2019] [Indexed: 12/24/2022] Open
Abstract
Aim: The aim of this study was to present primary outcomes of autologous bone marrow mononuclear cell (BMMNC) transplantation to improve neurological sequelae in four children with intracranial hemorrhage (ICH) incidence during the neonatal period. Methods: GMFM88 and modified Ashworth score were used to assess motor function and muscle spasticity before BMMNC transplantation and after transplantation. Brain MRI was performed to evaluate brain morphology before and after BMMNC transplantation. Bone marrow were harvested from anterior iliac crest puncture and BMMNCs were isolated using Ficoll gradient centrifugation. The microbiological testing, cell counting, and hematopoietic stem cell (hHSC CD34+ cell) analysis were performed, following which BMMNCs were infused intrathecally. Results: Improvement in motor function was observed in all patients after transplantation. In addition, muscle spasticity was reduced in all four patients. Conclusion: Autologous BMMNC transplantation may improve motor function and reduce muscle spasticity in children with ICH incidence during the neonatal period.
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Affiliation(s)
- Nguyen Thanh Liem
- Cellular Manufacturing Department, Vinmec Research Institute of Stem Cell and Gene Technology, Hanoi, Vietnam
| | - Truong Linh Huyen
- Cellular Manufacturing Department, Vinmec Research Institute of Stem Cell and Gene Technology, Hanoi, Vietnam
| | - Le Thu Huong
- Vinmec Times City General Hospital, Hanoi, Vietnam
| | - Ngo Van Doan
- Vinmec Times City General Hospital, Hanoi, Vietnam
| | - Bui Viet Anh
- Cellular Manufacturing Department, Vinmec Research Institute of Stem Cell and Gene Technology, Hanoi, Vietnam
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Affiliation(s)
| | | | - Vu Minh Duc
- Polymer Centre; Hanoi University of Science and Technology
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10
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Liem NT, Chinh VD, Thinh NT, Minh ND, Duc HM. Improved Bowel Function in Patients with Spina Bifida After Bone Marrow-Derived Mononuclear Cell Transplantation: A Report of 2 Cases. Am J Case Rep 2018; 19:1010-1018. [PMID: 30143601 PMCID: PMC6120349 DOI: 10.12659/ajcr.909801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/21/2018] [Indexed: 11/09/2022]
Abstract
BACKGROUND Bowel dysfunction is observed in 42.2-71.2% of patients with spina bifida. Traditional treatments yield limited results. The objective of this paper is to report on improvement in bowel function in 2 children with spina bifida following bone marrow-derived mononuclear cells transplantation. CASE REPORT Two patients - 14 years old and 11 years old - with bowel dysfunction after myelomeningocele repair underwent 2 BMMNC transplantations without complications. Those patients had normal defecation, assessed through follow-ups of 21 months and 16 months, respectively. CONCLUSIONS BMMNC transplantation can improve bowel function, as demonstrated in 2 patients with spina bifida.
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Affiliation(s)
- Nguyen Thanh Liem
- Stem Cell and Immune Cell Department, Vinmec Research Institute of Stem Cell and Gene Technology, Times City, Ha Noi, Vietnam
| | - Vu Duy Chinh
- Center for Excellence for Autism and Cerebral Palsy, Vinmec International Hospital, Times City, Ha Noi, Vietnam
| | - Nguyen Thi Thinh
- Pediatric Department, Vinmec International Hospital, Times City, Ha Noi, Vietnam
| | - Ngo Duy Minh
- Pediatric Department, Vinmec International Hospital, Times City, Ha Noi, Vietnam
| | - Hoang Minh Duc
- Stem Cell and Immune Cell Department, Vinmec Research Institute of Stem Cell and Gene Technology, Times City, Ha Noi, Vietnam
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Affiliation(s)
- Nguyen Thi Thuy
- Polymer Center; Hanoi University of Science and Technology; Viet Nam
| | - Vu Minh Duc
- Polymer Center; Hanoi University of Science and Technology; Viet Nam
| | - Nguyen Thanh Liem
- Polymer Center; Hanoi University of Science and Technology; Viet Nam
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12
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Nhung HTM, Anh BV, Huyen TL, Hiep DT, Thao CT, Lam PN, Liem NT. Ex vivo expansion of human peripheral blood natural killer cells and cytotoxic T lymphocytes from lung cancer patients. Oncol Lett 2018; 15:5730-5738. [PMID: 29552207 PMCID: PMC5840746 DOI: 10.3892/ol.2018.8029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 01/03/2018] [Indexed: 01/23/2023] Open
Abstract
Lung cancer is the most common type of cancer with the highest cancer-associated mortality rates worldwide, as well as in Vietnam. Numerous studies have demonstrated that higher numbers and higher rate of activity of infiltrating natural killer (NK) cells and cytotoxic T lymphocytes (CTLs) in the tumor are closely correlated with positive prognosis, tumor size decrease and longer survival of lung cancer patients. In the present study, the effectiveness of BINKIT® kit in the ex vivo expansion of NK cells and CTLs in the peripheral blood of 7 patients aged between 30 and 84 years with metastatic lung cancer was evaluated. After 21 days of culture, the average number of CTLs (CD3+CD8+) increased by 742.3-fold in the CTL culture, accounting for 72.2% of the cultured cell population, and the mean cell viability was 95.7%. In the NK cell culture, the average number of NK cells (CD3-CD56+) increased by 637.5-fold, accounting for 84.3% of the cultured cell population, with an average viability of 94.7%. The percentage of active NK cells (CD3-CD56+ bright) was 82.1%, which increased by 408.9-fold. Notably, a close correlation was identified between the numbers of cytokine-induced killer (CD3+CD56+) and NK (CD3-CD56+) cells in the NK cell culture (P<0.05). In the two culture conditions (namely NK cell and CTL cultures), no clear correlation was identified between the rate of initial immune cells in the peripheral blood and the corresponding number following ex vivo expansion (P>0.05). These results revealed that the method of expansion and activation of NK cells and CTLs from peripheral blood was successfully applied using BINKIT, and reached the requirements for clinical applications in cancer treatment in Vietnam.
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Affiliation(s)
- Hoang Thi My Nhung
- Department of Stem Cell and Immune Cell, Vinmec Research Institute of Stem Cells and Gene Technology, Hanoi 100000, Vietnam.,Department of Cell Biology, Faculty of Biology, VNU University of Science, Hanoi 100000, Vietnam
| | - Bui Viet Anh
- Department of Stem Cell and Immune Cell, Vinmec Research Institute of Stem Cells and Gene Technology, Hanoi 100000, Vietnam
| | - Truong Linh Huyen
- Department of Stem Cell and Immune Cell, Vinmec Research Institute of Stem Cells and Gene Technology, Hanoi 100000, Vietnam
| | - Doan Trung Hiep
- Department of Oncology, Vinmec International Hospital, Hanoi 100000, Vietnam
| | - Chu Thi Thao
- Department of Stem Cell and Immune Cell, Vinmec Research Institute of Stem Cells and Gene Technology, Hanoi 100000, Vietnam
| | - Phung Nam Lam
- Department of Oncology, Vinmec International Hospital, Hanoi 100000, Vietnam
| | - Nguyen Thanh Liem
- Department of Stem Cell and Immune Cell, Vinmec Research Institute of Stem Cells and Gene Technology, Hanoi 100000, Vietnam
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Liem NT, Anh TL, Thai TTH, Anh BV. Bone Marrow Mononuclear Cells Transplantation in Treatment of Established Bronchopulmonary Dysplasia: A Case Report. Am J Case Rep 2017; 18:1090-1094. [PMID: 29021519 PMCID: PMC5652889 DOI: 10.12659/ajcr.905244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Patient: Male, newborn Final Diagnosis: Bronchopulmonary displasia Symptoms: Difficult to breath • patient could not wean from oxygen/premature Medication: — Clinical Procedure: Bone marrow mononuclear cells transplantation Specialty: Pulmonology
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Affiliation(s)
- Nguyen Thanh Liem
- Department of Stem Cell and Immune Cell, inmec Research Institute of Stem Cells and Gene Technology, Hanoi, Vietnam
| | - Tran Lien Anh
- Department of Neonatology, Vinmec International Hospital, Hanoi, Vietnam
| | - Trieu T Hong Thai
- Department of Neonatology, Vinmec International Hospital, Hanoi, Vietnam
| | - Bui Viet Anh
- Department of Stem Cell and Immune Cell, Vinmec Research Institute of Stem Cell and Gene Technology, Hanoi, Vietnam
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15
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Miles M, Dung KTK, Ha LT, Liem NT, Ha K, Hunt RW, Mulholland K, Morgan C, Russell FM. The cause-specific morbidity and mortality, and referral patterns of all neonates admitted to a tertiary referral hospital in the northern provinces of Vietnam over a one year period. PLoS One 2017; 12:e0173407. [PMID: 28282433 PMCID: PMC5345801 DOI: 10.1371/journal.pone.0173407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 02/19/2017] [Indexed: 12/03/2022] Open
Abstract
Objective To describe the cause-specific morbidity and mortality, and referral patterns of all neonates admitted to a tertiary referral hospital in the northern provinces of Vietnam. Design A prospective hospital based observational study. Setting The Neonatal Department, National Hospital of Pediatrics, Hanoi, Vietnam. Patients All admissions to the Neonatal Department over a 12 month period. Main outcome measures Cause-specific morbidity and mortality; deaths. Results There were 5064 admissions with the commonest discharge diagnoses being infection (32%) and prematurity (29%). The case fatality ratio (CFR) was 13.9% (n = 703). Infection (38%), cardio/respiratory disorders (27%), congenital abnormalities (20%) and neurological conditions (10%) were the main causes of death. Of all the deaths, 38% had an admission weight ≥2500g. Higher CFR were associated with lower admission weights. Very few deaths (3%) occurred in the first 24 hours of life. Most referrals and deaths came from Hanoi and neighbouring provincial hospitals, with few from the most distant provinces. Two distant referral provinces had the highest CFR. Conclusions The CFR was high and few deaths occurred in neonates <24 hours old. The high rates of infection call for an improvement in infection control practices and peripartum antibiotic use at provincial and tertiary level. Understanding provincial hospital capacity and referral pathways is crucial to improving the outcomes at tertiary centres. A quality of care audit tool would enable more targeted interventions and monitoring of health outcomes.
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Affiliation(s)
- Merinda Miles
- Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia
| | | | - Le Thi Ha
- National Hospital of Pediatrics, Hanoi, Vietnam
| | | | - Khu Ha
- National Hospital of Pediatrics, Hanoi, Vietnam
| | - Rod W. Hunt
- Murdoch Childrens Research Institute, The Royal Children’s Hospital, Melbourne, Australia
- Department of Neonatal Medicine, The Royal Children’s Hospital, Melbourne, Australia
- Centre for International Child Health, Department of Paediatrics, The University of Melbourne, Melbourne, Australia
| | - Kim Mulholland
- Murdoch Childrens Research Institute, The Royal Children’s Hospital, Melbourne, Australia
- Menzies School of Health Research, Darwin, Australia
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Chris Morgan
- Centre for International Health, Burnet Institute, Melbourne, Australia
- Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Australia
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Fiona M. Russell
- Murdoch Childrens Research Institute, The Royal Children’s Hospital, Melbourne, Australia
- Centre for International Child Health, Department of Paediatrics, The University of Melbourne, Melbourne, Australia
- * E-mail:
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16
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Tung DH, Thuong TT, Liem NT, Duong PV, Lien NTH, Minh PH, Ionin AA, Levchenko AO, Rudenko AA, Saraeva IN, Ivanova AK, Kudryashov SI, Luong N, Trang NTH. Electrochemical Fabrication of Hybrid Plasmonic-dielectric Nanomaterial Based on Gold-diamond Clusters. ACTA ACUST UNITED AC 2017. [DOI: 10.15625/0868-3166/27/1/8886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Hybrid plasmonic-dielectric material were fabricated by micro-discharge through water sols of sub-micrometer-sized diamonds mixed with HAuCl4 acid. Primary characterization of their deposits on a silicon wafer surface by means of electron microscopy and energy-dispersive x-ray spectroscopy indicate close proximity of gold nanoparticles and diamond particles, which is supported by photoluminescence studies demonstrating strong – almost two-fold – damping of diamond luminescence owing to the attachment of gold nanoparticles. UV-near IR spectroscopy of their sols consistently exhibits small red spectral shifts for the fabricated nanomaterial, comparing to bare gold nanoparticles.
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17
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Thanh NT, Vinh LD, Liem NT, Shikuma C, Day JN, Thwaites G, Le T. Clinical features of three patients with paradoxical immune reconstitution inflammatory syndrome associated with Talaromyces marneffei infection. Med Mycol Case Rep 2016; 19:33-37. [PMID: 29379703 PMCID: PMC5775071 DOI: 10.1016/j.mmcr.2016.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 12/08/2016] [Indexed: 11/08/2022] Open
Abstract
Talaromyces marneffei infection is a major cause of death in HIV-infected individuals in South and Southeast Asia. Talaromycosis immune reconstitution inflammatory syndrome has not been well described. Here we report the clinical features, management, and outcomes of three HIV-infected patients with talaromycosis-associated paradoxical immune reconstitution inflammatory syndrome in Ho Chi Minh City, Vietnam.
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Affiliation(s)
- Nguyen Tat Thanh
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, Quan 5, Ho Chi Minh City, Vietnam
| | - Le Duc Vinh
- Vietnam Hospital for Tropical Diseases, 764 Vo Van Kiet, Quan 5, Ho Chi Minh City, Vietnam
| | - Nguyen Thanh Liem
- Vietnam Hospital for Tropical Diseases, 764 Vo Van Kiet, Quan 5, Ho Chi Minh City, Vietnam
| | - Cecilia Shikuma
- Hawaii Center for AIDS, University of Hawaii at Manoa, 651 Ilalo St., BSB, Suite 231, Honolulu, HI 96813, USA
| | - Jeremy N Day
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, Quan 5, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine and Global Health, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Guy Thwaites
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, Quan 5, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine and Global Health, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7FZ, UK
| | - Thuy Le
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, Quan 5, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine and Global Health, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7FZ, UK.,Hawaii Center for AIDS, University of Hawaii at Manoa, 651 Ilalo St., BSB, Suite 231, Honolulu, HI 96813, USA
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18
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Duong DA, Dung VC, Dat NP, Thao BP, Ngoc CTB, Khanh NN, Dien TM, Liem NT, Flanagan S, Ellard S. Molecular genetics, correlation between genotype and phenotype of 65 Vietnames patients with congenital hyperinsulinism. Int J Pediatr Endocrinol 2015. [PMCID: PMC4428897 DOI: 10.1186/1687-9856-2015-s1-p125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
PURPOSE To describe the surgical technique and outcomes of an one stage operation through modified posterior sagittal approach (PSAP) preserving the sphincter intact for anal agenesia with rectovestibula fistula. PATIENTS AND METHODS 57 patients suffering from anal agenesis with rectovestibular fistula were operated by a one-stage operation through a modified PSAP preserving the external sphincter intact from 2002 to 2010. The operation was performed in one-stage through a posterior sagittal approach with three modifications: The external sphincter complex was not opened on the posterior side, the dissection was carried out outside the rectal pouch, the rectal pouch was not tapered and was pulled through the center of the external sphincter identified by muscle stimulator. RESULTS Patients age varied from 3 days to 30 days (mean: 21±9 days). The mean operative time was 57±8 min (range, 35-90 min). There were no intraoperative complications. There were no intraoperative or postoperative deaths. There were no early postoperative complications. Follow up from 40 months to 140 was obtained in 52 (91.2%) patients. Constipation has seen in 3 patient, 46 patients (88.5%) had 1-2 defecations per day, 2 patients (3.85%) had 3-4 defecations per day, 1 patients (1.9%) had more than 4 defecations, and 3 patients(5.8%) had one defecation every 2-3 days. Rectal mucosal prolapse occurred in 7 patients who required a second operation. CONCLUSION One stage operation through modified PSAP is feasible, is safe and provides good continence outcomes for anal agenesis with rectovestibular fistula.
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Son TN, Liem NT, Kien HH. Laparoscopic simple oblique duodenoduodenostomy in management of congenital duodenal obstruction in children. J Laparoendosc Adv Surg Tech A 2014; 25:163-6. [PMID: 25536359 DOI: 10.1089/lap.2014.0263] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION The aim of this report is to present our technique of laparoscopic simple oblique duodenoduodenostomy (LSOD) and its results in management of congenital duodenal obstruction (CDO) in children. PATIENTS AND METHODS Medical records of patients with the diagnosis of CDO undergoing LSOD at our center from March 2009 to December 2013 were reviewed. The LSOD used one infra- or transumbilical 5-mm port for the camera and two 3-mm ports for instruments. After mobilization of the distant part of the duodenum, a 5-0 polydioxanone seromuscular suture was placed on the duodenal wall proximal and distal to the obstruction and tacked to the anterior abdominal wall for traction. The lower duodenum was incised longitudinally distal to the traction suture. The upper duodenum incision was placed away from the traction suture and extended downward obliquely. The duodenoduodenostomy was performed as a "simple" anastomosis. RESULTS Forty-eight patients were identified with a median age at operation of 11 days. The median weight at operation was 2650 g. Duodenal atresia and annular pancreas were found in 81.2% and 18.8% of patients, respectively. The median operative time was 90 minutes. There was no conversion to open surgery, anastomotic leakage, or stenosis. The median time from the operation to initial oral feeding was 4 days. Of the 48 patients, 97.9% were discharged in good health with a median postoperative hospital stay of 7 days CONCLUSIONS The LSOD technique is safe and efficacious and can be a viable option in the management of select cases of CDO in children at experienced centers.
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Affiliation(s)
- Tran Ngoc Son
- Surgical Department, National Hospital of Pediatrics , Hanoi, Vietnam
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21
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Son TN, Liem NT, Hoan VX. Transumbilical Laparoendoscopic Single-Site Surgery with Conventional Instruments for Choledochal Cyst in Children: Early Results of 86 Cases. J Laparoendosc Adv Surg Tech A 2014; 24:907-10. [DOI: 10.1089/lap.2014.0268] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Tran Ngoc Son
- Surgical Department, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Nguyen Thanh Liem
- Surgical Department, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Vu Xuan Hoan
- Surgical Department, National Hospital of Pediatrics, Hanoi, Vietnam
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Abstract
Disability is shown to be both a cause and a consequence of poverty. However, relatively little research has investigated the economic cost of living with a disability. This study reports the results of a study on the extra cost of living with disability in Vietnam in 2011. The study was carried out in eight cities/provinces in Vietnam, including Hanoi and Ho Chi Minh cities (two major metropolitan in Vietnam) and six provinces from each of the six socio-economic regions in Vietnam. Costs are estimated using the standard of living approach whereby the difference in incomes between people with disability and those without disability for a given standard of living serves as a proxy for the cost of living with disability. The extra cost of living with disability in Vietnam accounted for about 8.8-9.5% of annual household income, or valued about US$200-218. Communication difficulty was shown to result in highest additional cost of living with disability and self-care difficulty was shown to lead to the lowest levels of extra of living cost. The extra cost of living with disability increased as people had more severe impairment. Interventions to promote the economic security of livelihood for people with disabilities are needed.
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Affiliation(s)
- Hoang Van Minh
- a Department of Health Economics , Institute for Preventive Medicine and Public Health, Hanoi Medical University , Hanoi , Vietnam
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23
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Liem NT, Tung CV, Van Linh N, Tuan TM, Quang LH, Tu TT. Outcomes of thoracoscopic clipping versus transcatheter occlusion of patent ductus arteriosus: randomized clinical trial. J Pediatr Surg 2014; 49:363-6. [PMID: 24528987 DOI: 10.1016/j.jpedsurg.2013.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 11/18/2022]
Abstract
AIM To compare outcomes of thoracoscopic clipping (TC) versus transcatheter occlusion (TO) for patent ductus arteriosus (PDA). PATIENTS AND METHODS One hundred patients were enrolled in the study from May 2010 to December 2011. Those patients were randomized into 2 groups: group one received TC, group two received TO. RESULT There were no significant differences concerning width or length of the ductus (P>0.05). However the median age and median weight of patients in the TO group were greater than in the TC group (P<0.05). Mean operative time was 32 ± 12 min in the TC group versus 20 ± 3 min in the TO group (P<0.05). There were no deaths in either group. There were no complications in the TC group whereas three patients in the TO group had complications and required subsequent operation. Median postoperative stay was 3.5 days (IQR: 3.0-4.3) in the TC group versus 3 days (IQR: 2.0-4.0) in the TO group (P<0.05). There was no residual shunting in either group. Average cost for one patient was $645 ± 232 in the TC group versus $1,260 ± 204 in the TO group (P<0.001). CONCLUSION Thoracoscopic clipping is safer than transcatheter occlusion for PDA repair, with the same effectiveness and lower cost.
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Affiliation(s)
| | - Cao Viet Tung
- Cardiology Department, National Hospital of Pediatrics, Hanoi, Vietnam, Hanoi, Vietnam
| | - Nguyen Van Linh
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - To Manh Tuan
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Le Hong Quang
- Cardiology Department, National Hospital of Pediatrics, Hanoi, Vietnam, Hanoi, Vietnam
| | - Tran Thanh Tu
- Research Institute for Child Health, National Hospital of Pediatrics, Hanoi, Vietnam
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Wang C, Yu H, Horby PW, Cao B, Wu P, Yang S, Gao H, Li H, Tsang TK, Liao Q, Gao Z, Ip DKM, Jia H, Jiang H, Liu B, Ni MY, Dai X, Liu F, Van Kinh N, Liem NT, Hien TT, Li Y, Yang J, Wu JT, Zheng Y, Leung GM, Farrar JJ, Cowling BJ, Uyeki TM, Li L. Comparison of patients hospitalized with influenza A subtypes H7N9, H5N1, and 2009 pandemic H1N1. Clin Infect Dis 2014; 58:1095-103. [PMID: 24488975 PMCID: PMC3967826 DOI: 10.1093/cid/ciu053] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Hospitalization with H7N9 virus infection is associated with older age and chronic heart
disease, and patients have a longer duration of hospitalization than patients with H5N1 or
pH1N1. This suggests that host factors are an important contributor to H7N9 severity. Background. Influenza A(H7N9) viruses isolated from
humans show features suggesting partial adaptation to mammals. To provide insights into
the pathogenesis of H7N9 virus infection, we compared risk factors, clinical presentation,
and progression of patients hospitalized with H7N9, H5N1, and 2009 pandemic H1N1 (pH1N1)
virus infections. Methods. We compared individual-level data from
patients hospitalized with infection by H7N9 (n = 123), H5N1 (n = 119; 43
China, 76 Vietnam), and pH1N1 (n = 3486) viruses. We assessed risk factors for
hospitalization after adjustment for age- and sex-specific prevalence of risk factors in
the general Chinese population. Results. The median age of patients with H7N9 virus
infection was older than other patient groups (63 years; P < .001) and
a higher proportion was male (71%; P < .02). After adjustment
for age and sex, chronic heart disease was associated with an increased risk of
hospitalization with H7N9 (relative risk, 9.68; 95% confidence interval,
5.24–17.9). H7N9 patients had similar patterns of leukopenia, thrombocytopenia, and
elevated alanine aminotransferase, creatinine kinase, C-reactive protein, and lactate
dehydrogenase to those seen in H5N1 patients, which were all significantly different from
pH1N1 patients (P < .005). H7N9 patients had a longer duration of
hospitalization than either H5N1 or pH1N1 patients (P < .001), and the
median time from onset to death was 18 days for H7N9 (P = .002) vs
11 days for H5N1 and 15 days for pH1N1 (P = .154). Conclusions. The identification of known risk factors
for severe seasonal influenza and the more protracted clinical course compared with that
of H5N1 suggests that host factors are an important contributor to H7N9 severity.
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Affiliation(s)
- Chen Wang
- Institute of Respiratory Medicine, Beijing Hospital, National Health and Family Planning Commission
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Ngoc CTB, Dung VC, Thao BP, Khanh NN, Son TN, Liem NT, Dat NP, Hoan NT. Adrenal cortex tumors: clinical features and laboratory finding. Int J Pediatr Endocrinol 2013. [PMCID: PMC3856622 DOI: 10.1186/1687-9856-2013-s1-p110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Thoracoscopic repair is feasible and safe for congenital diaphragmatic hernia (CDH). The operation can be performed with three trocars using carbon dioxide insufflations at a pressure of 4-6 mmHG. From January 2001 to July 2012, we performed thoracoscopic repair for 311 children with CDH including 152 newborns and 159 infants and toddlers. Mean operative time was 75 ± 27 min. HFOV was used in 24 patients. Direct closure of two rims of diaphragmatic hernia was carried out in 175 patients. Closure of two rims of diaphragmatic hernia with the thoracic wall was performed in 136 patients. Prosthetic patches were required in 54 patients. Conversion to open surgery was required in 38 patients (12.2%). There were no intraoperative deaths. 38 patients died postoperatively (13.5%).
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Dung VC, Khanh TV, Fukami M, Phuong LT, Ha NT, Liem NT, Van TT. Mutation spectrum of CYP21A2 and correlation between genotype – phenotype in 81 Vietnamese patients with congenital adrenal hyperplasia due to 21-hydroxylase defficiency. Int J Pediatr Endocrinol 2013. [PMCID: PMC3850078 DOI: 10.1186/1687-9856-2013-s1-p128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Liem NT, Mai Thuy NT, Viet ND, Dung LA. Single trocar retroperitoneoscopic nephrectomy for dysplastic poorly functioning kidney with ectopic ureter in children. J Pediatr Urol 2013; 9:424-6. [PMID: 23103130 DOI: 10.1016/j.jpurol.2012.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 10/03/2012] [Indexed: 12/01/2022]
Abstract
This is the first report of a single trocar nephrectomy for poorly functioning dysplastic kidney and ectopic ureter, performed in 5 patients from 2010 to 2011. The mean operative time was 63 min and mean postoperative hospital stay was 31 h. There were no perioperative complications. The single trocar nephrectomy is a feasible and safe procedure for patients with dysplastic kidney and ectopic ureter.
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Affiliation(s)
- Nguyen Thanh Liem
- Department of Surgery, National Hospital of Pediatrics, 18/879 La Thanh Road, Dong Da District, Hanoi, Viet Nam.
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Hai LT, Bich VTN, Ngai LK, Diep NTN, Phuc PH, Hung VP, Taylor WR, Horby P, Liem NT, Wertheim HFL. Fatal respiratory infections associated with rhinovirus outbreak, Vietnam. Emerg Infect Dis 2013; 18:1886-8. [PMID: 23092635 PMCID: PMC3559162 DOI: 10.3201/eid1811.120607] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
During an outbreak of severe acute respiratory infections in 2 orphanages, Vietnam, 7/12 hospitalized children died. All hospitalized children and 26/43 children from outbreak orphanages tested positive for rhinovirus versus 9/40 control children (p = 0.0005). Outbreak rhinoviruses formed a distinct genetic cluster. Human rhinovirus is an underappreciated cause of severe pneumonia in vulnerable groups.
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Målqvist M, Hoa DTP, Liem NT, Thorson A, Thomsen S. Ethnic minority health in Vietnam: a review exposing horizontal inequity. Glob Health Action 2013; 6:1-19. [PMID: 23462107 PMCID: PMC3589437 DOI: 10.3402/gha.v6i0.19803] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 01/22/2013] [Accepted: 02/10/2013] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Equity in health is a pressing concern and reaching disadvantaged populations is necessary to close the inequity gap. To date, the discourse has predominately focussed on reaching the poor. At the same time and in addition to wealth, other structural determinants that influence health outcomes exist, one of which is ethnicity. Inequities based on group belongings are recognised as 'horizontal', as opposed to the more commonly used notion of 'vertical' inequity based on individual characteristics. OBJECTIVE The aim of the present review is to highlight ethnicity as a source of horizontal inequity in health and to expose mechanisms that cause and maintain this inequity in Vietnam. DESIGN Through a systematic search of available academic and grey literature, 49 publications were selected for review. Information was extracted on: a) quantitative measures of health inequities based on ethnicity and b) qualitative descriptions explaining potential reasons for ethnicity-based health inequities. RESULTS Five main areas were identified: health-care-seeking and utilization, maternal and child health, nutrition, infectious diseases, and oral health and hygiene. Evidence suggests the presence of severe health inequity in health along ethnic lines in all these areas. Research evidence also offers explanations derived from both external and internal group dynamics to this inequity. It is reported that government policies and programs appear to be lacking in culturally adaptation and sensitivity, and examples of bad attitudes and discrimination from health staff toward minority persons were identified. In addition, traditions and patriarchal structures within ethnic minority groups were seen to contribute to the maintenance of harmful health behaviors within these groups. CONCLUSION Better understandings of the scope and pathways of horizontal inequities are required to address ethnic inequities in health. Awareness of ethnicity as a determinant of health, not only as a covariate of poverty or living area, needs to be improved, and research needs to be designed with this in mind.
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Affiliation(s)
- Mats Målqvist
- International Maternal and Child Health (IMCH), Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
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Dung VC, Fukami M, Ngoc CTB, Thao BP, Khanh NN, Hoan NT, Liem NT, Ngoc ND, Mai NTP, Nga PT, Dat NP, Ogata T. Genotype and phenotype of Vietnamese patients with androgen insensitivity syndrome. Int J Pediatr Endocrinol 2013. [PMCID: PMC3850449 DOI: 10.1186/1687-9856-2013-s1-p194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vu Chi Dung
- Vietnam National Hospital of Pediatrics, Hanoi, Vietnam
| | - Maki Fukami
- National Research Institute for Child Health and Development, Tokyo, Japan
| | | | | | | | | | | | - Ngo Diem Ngoc
- Vietnam National Hospital of Pediatrics, Hanoi, Vietnam
| | | | - Pham Thu Nga
- Vietnam National Hospital of Pediatrics, Hanoi, Vietnam
| | | | - Tsutomu Ogata
- National Research Institute for Child Health and Development, Tokyo, Japan
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Dung VC, Liem NT, Thao BP, Khanh NN, Ngoc CTB, Hoan NT, Dung KTK, Nhu LT, Duong DA, Dat NP, Flanagan S, Ellard S. Molecular genetics and phenotype of 26 Vietnamese patients with congenital hyperinsulinism. Int J Pediatr Endocrinol 2013. [PMCID: PMC3850086 DOI: 10.1186/1687-9856-2013-s1-p179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vu Chi Dung
- Vietnam National Hospital of Pediatrics, Hanoi, Vietnam
| | | | | | | | | | | | | | - Le To Nhu
- Vietnam National Hospital of Pediatrics, Hanoi, Vietnam
| | | | | | - Sarah Flanagan
- Peninsula Medical School, Institute of Biomedical and Clinical Science, Exeter, UK
| | - Sian Ellard
- Peninsula Medical School, Institute of Biomedical and Clinical Science, Exeter, UK
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Truong NLT, Tiep DH, Ha NTT, Dien TM, Hoa PH, Liem NT. Modified Lecompte procedure for repair of double-outlet left ventricle. Asian Cardiovasc Thorac Ann 2012; 20:578-80. [PMID: 23087304 DOI: 10.1177/0218492312437384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A modification of the Lecompte procedure was used successfully for total correction in 2 boys aged 3 and 6 months with double-outlet left ventricle. The operative procedure and short-term results are evaluated.
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Abstract
The aim of this study is to present the technique and early outcomes of single trocar retroperitoneoscopic assisted ureteroureterostomy for ureteral duplication. The patient was placed in a lateral decubitus position. A skin incision of 11 mm width was made above the iliac crest. The operation was performed through single trocar with operating laparoscope. The two ureters were encircled with a vessel loop and exteriorized outside the retroperitoneal space via trocar incision. The pathologic ureter was divided as low as possible. The recipient ureter was opened longitudinally. End-to-side ureteroureterostomy anastomosis was performed extracorporeally with two running 6/0 PDS sutures. From December 2010 to July 2011, nine patients were operated on using the same technique. Patient's ages ranged from 2 to 72 months. Mean operative time was 78 ± 21 min. There were no intra or postoperative complications. Postoperative stay was 2.6 ± 1.0 days. Follow-up revealed that two renal moieties preserved their functions in all patients. The diameter of involved ureters and pelvises was significantly reduced in all patients. Single trocar retroperitoneoscopic assisted ureteroureterostomy is safe and effective procedure for ureteral duplication.
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Affiliation(s)
- N T Liem
- Surgical Department, National Hospital of Pediatrics, 18/879 La Thanh Road, Dong Da District, Hanoi, Vietnam.
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Abstract
AIM To present a modified and safe technique of thoracoscopic clipping of patent ductus arteriosus (PDA) in children and its early outcomes. PATIENTS AND METHODS Patients are anesthetized, ventilated via single-lung ventilation, and placed in a right lateral position. The surgeon and the assistant stand at the patient's feet, and a monitor is placed at the patient's head. The ductus is pulled forward with a Vicryl(®) (Ethicon) thread and clipped completely. RESULTS From May 2010 to February 2011, 58 patients with PDA (27 boys and 31 girls) were operated on using the same technique. Patients' ages varied from 8 days to 36 months. Mean weight of patients was 5.9±2.8 kg (range, 2.1-10 kg). Mean operative time was 33±12 minutes (range, 15-90 minutes). There were no intraoperative complications. Postoperative complications occurred in 2 patients: 1 patient developed a pneumothorax, and 1 patient had pleural effusion. Mean postoperative stay was 4.1±2.1 days for patients >3 months old and 11.9±8.4 days for patients ≤3 months old. No injuries of recurrent laryngeal nerve occurred in any patients, and there were no residual shunts in any patients 3-6 months after discharge. CONCLUSION A modified technique of thoracoscopic closure is a safe and effective procedure for PDA in children.
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Affiliation(s)
- Nguyen Thanh Liem
- Department of Pediatric Surgery, National Hospital of Pediatrics, Hanoi, Vietnam.
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Liem NT, Pham HD, Dung LA, Son TN, Vu HM. Early and Intermediate Outcomes of Laparoscopic Surgery for Choledochal Cysts with 400 Patients. J Laparoendosc Adv Surg Tech A 2012; 22:599-603. [DOI: 10.1089/lap.2012.0018] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Nguyen Thanh Liem
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Hien Duy Pham
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Le Anh Dung
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Tran Ngoc Son
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Hoan Manh Vu
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
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Liem NT, Nhat LQ, Tuan TM, Dung LA, Ung NQ, Dien TM. Thoracoscopic repair for congenital diaphragmatic hernia: experience with 139 cases. J Laparoendosc Adv Surg Tech A 2011; 21:267-70. [PMID: 21204646 DOI: 10.1089/lap.2010.0106] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
PURPOSE To analyze indications and to present details of surgical technique and outcomes of thoracoscopic repair for congenital diaphragmatic hernia (CDH) in 139 patients. METHODS We reviewed medical records of all patients with CDH who underwent thoracoscopic repair by the same surgical team from June 2001 to October 2009. Patients were placed in the lateral decubitus position. The operations were performed using three trocars. Pleural insufflation with carbon dioxide was maintained at a pressure of 2-6 mm Hg. The hernia defect was repaired using nonabsorbable interrupted sutures with extracorporeal knots. A prosthetic patch was used when direct closure of the hernia defect was not feasible. RESULTS There were 139 patients, including 91 boys and 48 girls. Seventy-five patients were newborns, and 64 were infants or children. The hernia was located on the left side in 113 patients (81.3%) and on the right side in 26 patients (18.7%). The mean operative time for thoracoscopic approach was 66 ± 27 minutes. Conversion was required in 11 patients (7.9%) from 2001 to 2007. There were no conversions in 2008 or 2009. A prosthetic patch was used in 7 patients. There were 14 postoperative deaths (10%). Follow-up was obtained in 114 patients, ranging from 1 to 84 months (mean 26.3 ± 24.7 months). Five patients had recurrence (3.6%). CONCLUSIONS Thoracoscopic repair is feasible and safe for children with CDH, including newborns. The conversion rate decreased, and indications increased with surgical team experience.
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Affiliation(s)
- Nguyen Thanh Liem
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam.
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Hau BD, Quynh TA, Anh VH, Liem NT. Early and Late Outcomes of Primary Laparoscopic Endorectal Colon Pull-Through Leaving a Short Rectal Seromuscular Sleeve for Hirschsprung Disease. J Laparoendosc Adv Surg Tech A 2011; 21:81-3. [PMID: 21314566 DOI: 10.1089/lap.2009.0482] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Bui Duc Hau
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Tran Anh Quynh
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Vu Hong Anh
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
| | - Nguyen Thanh Liem
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam
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Huong NTQ, Long TD, Bouissou F, Liem NT, Truong DM, Nga DK, Chien TT, Bascands JL. Chronic kidney disease in children: the National Paediatric Hospital experience in Hanoi, Vietnam. Nephrology (Carlton) 2010; 14:722-7. [PMID: 20025680 DOI: 10.1111/j.1440-1797.2009.01142.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIM The goal of this descriptive study was to evaluate the aetiology and the socioeconomic status in hospitalized children in Hanoi and propose solutions to improve prevention and basic health care of patients with chronic kidney disease in Hanoi City. METHODS The records of all 152 hospitalized children with chronic kidney disease in the National Paediatric Hospital in Hanoi from January 2001 to December 2005 were analyzed. RESULTS The incidence of paediatric chronic kidney disease native to Hanoi City was estimated to be 5.1/million-child population (pmcp). Median age was 11.29 years; 60.5% were boys and 39.5% were girls; 65% of patients were in end-stage renal disease. Causes of chronic kidney disease included glomerulonephritis (66.4%) and congenital/hereditary anomalies (13%). In 19.8% of children, the aetiology was unavailable. During hospitalization, five patients died and 76 patients (50%) refused the treatment although beneficiaries of health insurance. Thirty patients (19.74%) received peritoneal dialysis and haemodialysis, and seven patients received renal transplantation with a familial living donor. CONCLUSION Late referral, and limited facilities for renal replacement therapy explain the poor outcome in this study. We need a program to delineate the burden of chronic kidney disease and improve primary health care for health promotion and prevention of paediatric chronic kidney disease.
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Liem NT, Dung LA, Son TN. Laparoscopic complete cyst excision and hepaticoduodenostomy for choledochal cyst: early results in 74 cases. J Laparoendosc Adv Surg Tech A 2009; 19 Suppl 1:S87-90. [PMID: 18999975 DOI: 10.1089/lap.2008.0169.supp] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE To report the technical details and early outcomes of complete laparoscopic cyst excision and hepaticoduodenostomy for choledochal cyst. METHODS The operation was performed using four ports. The cystic duct was identified and divided. The liver was elevated by two stay sutures: one on the round ligament, and the other on the distal cystic duct. The choledochalcyst was isolated and removed completely and the duodenum was mobilized. Hepaticoduodenostomy was constructed 2 cm distal to the pylorus using two running sutures with 5-0 polydioxane sutures. RESULTS From January to December 2007, 74 patients were operated. There were 59 girls and 15 boys. Ages ranged from 2.5 months to 16 years old. The diameter of the cyst ranged from 10 mm to 184 mm. The operating time ranged from 90 minutes to 340 minutes (mean: 186 minutes). Conversion to open surgery was required in one patient. Blood transfusion was required in four patients. Postoperative anastomotic leakage occurred in three patients, resolving spontaneously in two patients and requiring a second operation in the third.Postoperative hospital stay ranged from 4 days to 21 days (average: 6.6 days). Follow-up from 3 months to 12 months was obtained in 56 patients (75.5%). Of these patients, cholangitis occurred in three patients (5.3%) and gastritis due to bilious reflux in eight patients (14.3%). CONCLUSION Laparoscopic complete cyst excision and hepaticoduodenostomy is a safe and physiologic procedure for choledochal cyst.
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Affiliation(s)
- Nguyen Thanh Liem
- Department of Surgery, National Hospital of Pediatrics, Hanoi, Vietnam.
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Liem NT, Tung CV, Hien ND, Hien TT, Chau NQ, Long HT, Hien NT, Mai LQ, Taylor WRJ, Wertheim H, Farrar J, Khang DD, Horby P. Clinical features of human influenza A (H5N1) infection in Vietnam: 2004-2006. Clin Infect Dis 2009; 48:1639-46. [PMID: 19435433 DOI: 10.1086/599031] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The first cases of avian influenza A (H5N1) in humans in Vietnam were detected in early 2004, and Vietnam has reported the second highest number of cases globally. METHODS We obtained retrospective clinical data through review of medical records for laboratory confirmed cases of influenza A (H5N1) infection diagnosed in Vietnam from January 2004 through December 2006. Standard data was abstracted regarding clinical and laboratory features, treatment, and outcome. RESULTS Data were obtained for 67 (72%) of 93 cases diagnosed in Vietnam over the study period. Patients presented to the hospital after a median duration of illness of 6 days with fever (75%), cough (89%), and dyspnea (81%). Diarrhea and mucosal bleeding at presentation were more common in fatal than in nonfatal cases. Common findings were bilateral pulmonary infiltrates on chest radiograph (72%), lymphopenia (73%), and increased serum transaminase levels (aspartate aminotransferase, 69%; alanine aminotransferase, 61%). Twenty-six patients died (case fatality rate, 39%; 95% confidence interval, 27%-51%) and the most reliable predictor of a fatal outcome was the presence of both neutropenia and raised alanine aminotransferase level at admission, which correctly predicted 91% of deaths and 82% of survivals. The risk of death was higher among persons aged < or =16 years, compared with older persons (P < .001), and the risk of death was higher among patients who did not receive oseltamivir treatment (P = .048). The benefit of oseltamivir treatment remained after controlling for potential confounding by 1 measure of severity (odds ratio, 0.15; 95% confidence interval, 0.026-0.893; P = .034). CONCLUSION In cases of infection with Influenza A (H5N1), the presence of both neutropenia and raised serum transaminase levels predicts a poor outcome. Oseltamivir treatment shows benefit, but treatment with corticosteroids is associated with an increased risk of death.
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Liem NT, Dung LA, Son TN. Laparoscopic Complete Cyst Excision and Hepaticoduodenostomy for Choledochal Cyst: Early Results in 74 Cases. J Laparoendosc Adv Surg Tech A 2008. [DOI: 10.1089/lap.2008.0169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Affiliation(s)
- Björn Ekman
- Health Economics Program (HEP), Department of Clinical Sciences, Lund University, Malmö SE-205 02, Sweden.
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Liem NT, Nakajima N, Phat LP, Sato Y, Thach HN, Hung PV, San LT, Katano H, Kumasaka T, Oka T, Kawachi S, Matsushita T, Sata T, Kudo K, Suzuki K. H5N1-Infected Cells in Lung with Diffuse Alveolar Damage in Exudative Phase from a Fatal Case in Vietnam. Jpn J Infect Dis 2008. [DOI: 10.7883/yoken.jjid.2008.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Affiliation(s)
| | | | | | - Yuko Sato
- National Institute of Infectious Diseases, Japan
| | | | | | | | | | | | | | | | | | | | | | - Kazuo Suzuki
- National Institute of Infectious Diseases, Japan
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Liem NT, Nakajima N, Phat LP, Sato Y, Thach HN, Hung PV, San LT, Katano H, Kumasaka T, Oka T, Kawachi S, Matsushita T, Sata T, Kudo K, Suzuki K. H5N1-infected cells in lung with diffuse alveolar damage in exudative phase from a fatal case in Vietnam. Jpn J Infect Dis 2008; 61:157-160. [PMID: 18362412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Necropsied lung tissues of three fatal cases with avian influenza A virus (H5N1) infection in Vietnam were analyzed to detect H5N1 virus-infected cells. Formalin-fixed and paraffin-embedded lung tissue sections showed typical histological features of diffuse alveolar damage (DAD) in all cases. Immunohistochemistry for the influenza A virus nucleoprotein antigen revealed positive signals of bronchiolar and alveolar epithelial cells in only one patient, who exhibited DAD with an exudative phase and died on the 6th day after onset. However, no signal was detected in the other two cases of DAD with a proliferative phase. These patients died on day 16 and day 17 after onset, respectively. H5N1 virus antigens were detected predominantly in epithelial cells in terminal bronchioles and in alveoli, i.e., type I and type II alveolar pneumocytes, and in alveolar macrophages. The pathogenesis of exudative DAD caused by H5N1 infection is discussed.
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Justice FA, de Campo M, Liem NT, Son TN, Ninh TP, Bines JE. Accuracy of ultrasonography for the diagnosis of intussusception in infants in Vietnam. Pediatr Radiol 2007; 37:195-9. [PMID: 17180657 DOI: 10.1007/s00247-006-0381-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 11/15/2006] [Accepted: 11/16/2006] [Indexed: 11/27/2022]
Abstract
BACKGROUND Intussusception (IS) is the most common cause of acute bowel obstruction in infants and young children. Ultrasonography is being increasingly used as the primary investigation for the diagnosis of IS and to guide air or hydrostatic enema reduction. However the accuracy of ultrasonography outside tertiary care settings in developed countries has not been assessed, particularly in Asia where the incidence of IS based on sonographic diagnosis has been reported as the highest in the world. OBJECTIVE The aim of this study was to evaluate the accuracy of ultrasonography in the diagnosis of acute IS in infants less than 2 years of age in a paediatric hospital in Vietnam. MATERIALS AND METHODS A prospective study was conducted at the National Hospital for Paediatrics, Hanoi, Vietnam, over a 14-month period recruiting patients <2 years of age with IS. Abdominal ultrasonography was performed on each patient and the accuracy of the diagnosis was evaluated against the final diagnosis provided by air enema and/or surgery. RESULTS A total of 640 infants <2 years of age presented with clinical symptoms and signs of IS. The diagnosis was confirmed in 533 patients via air enema or surgery. Abdominal ultrasonography was 97.5% (466/478) sensitive and 99% (106/107) specific in the detection of IS. CONCLUSION Ultrasonography is an accurate, safe and valuable clinical tool in the diagnosis of IS. The use of ultrasonography as a primary investigation for patients with suspected IS prevents unnecessary radiological or surgical procedures being performed, and reduces radiation exposure while maintaining a high level of diagnostic accuracy. These results validate the use of ultrasonography for the diagnosis of IS in a developing country setting.
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Bines JE, Liem NT, Justice FA, Son TN, Kirkwood CD, de Campo M, Barnett P, Bishop RF, Robins-Browne R, Carlin JB. Risk factors for intussusception in infants in Vietnam and Australia: adenovirus implicated, but not rotavirus. J Pediatr 2006; 149:452-60. [PMID: 17011313 DOI: 10.1016/j.jpeds.2006.04.010] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2005] [Revised: 02/27/2006] [Accepted: 04/05/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE This study aimed to investigate risk factors for the development of intussusception in infants in a developing country with a suspected high incidence and in a developed country with a low incidence. STUDY DESIGN A prospective case-control study of infants <2 years of age with idiopathic intussusception confirmed by air enema or surgery was conducted at the National Hospital of Paediatrics (NHP), Vietnam (n = 533) and the Royal Children's Hospital (RCH), Australia (n = 51). Diagnosis was validated in a subset (84% NHP; 67% RCH) by an independent blinded radiologist. Risk factor assessment was performed using a standardized questionnaire. Stool specimens were assayed for bacterial, viral, and parasitic agents. RESULTS The incidence of intussusception in Vietnam was 302/100,000 in infants <1 year of age (95% CI: 258-352), substantially higher than in Australia (71/100,000). A strong association with adenovirus infection was observed at both sites (cases positive at NHP: 34%, OR 8.2; cases positive at RCH: 40%, OR 44). No association was identified between intussusception and rotavirus, other enteric pathogens, oral polio vaccine, feeding practices, or living conditions. CONCLUSIONS The incidence of intussusception in infants was markedly higher in Vietnam than in Australia. A strong association between adenovirus infection and intussusception was identified at both sites suggesting that adenovirus may play a role in the etiology of intussusception.
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Affiliation(s)
- Julie E Bines
- Department of Gastroenterology and Clinical Nutrition, Emergency Medicine, Microbiology, Clinical Epidemiology and Biostatistics Unit, Royal Children's Hospital, Parkville, Australia.
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Abstract
PURPOSE We present our experience in performing thoracoscopic pericardiectomy for purulent pericarditis in 21 children. MATERIALS AND METHODS Pericardiectomy was carried out using one optical trocar and two operating trocars. Pleural insufflation with carbon dioxide was maintained at 2-4 mm Hg. Anterior pericardiectomy was performed from the left phrenic nerve to the right border of the sternum to free the anterior part of the heart, notably the cardiac apex and the original area of the great vessels. Purulent debris was removed prior to detaching the epicardial peel. RESULTS This study included 21 patients. Their mean age was 8 years. The time from onset of the disease to surgery ranged from 4 to 34 days (average, 15.2 days). Operative times ranged from 50 to 180 minutes (average, 100 minutes). There were no intraoperative or postoperative complications. All symptoms of cardiac tamponade disappeared immediately postoperatively. Follow-up ranged from 4 to 15 months and showed normal clinical manifestations, echocardiographs, and chest x-rays in all children. CONCLUSION Thoracoscopic pericardiectomy with removal of a generous amount of the pericardium is feasible and safe for purulent pericarditis.
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Affiliation(s)
- Nguyen Thanh Liem
- Surgical Department, National Hospital of Pediatrics, Hanoi, Vietnam.
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Bines JE, Liem NT, Justice F, Son TN, Carlin JB, de Campo M, Jamsen K, Mulholland K, Barnett P, Barnes GL. Validation of clinical case definition of acute intussusception in infants in Viet Nam and Australia. Bull World Health Organ 2006; 84:569-75. [PMID: 16878231 PMCID: PMC2627399 DOI: 10.2471/blt.05.025445] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Accepted: 12/04/2005] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To test the sensitivity and specificity of a clinical case definition of acute intussusception in infants to assist health-care workers in settings where diagnostic facilities are not available. METHODS Prospective studies were conducted at a major paediatric hospital in Viet Nam (the National Hospital of Pediatrics, Hanoi) from November 2002 to December 2003 and in Australia (the Royal Children's Hospital, Melbourne) from March 2002 to March 2004 using a clinical case definition of intussusception. Diagnosis of intussusception was confirmed by air enema or surgery and validated in a subset of participants by an independent clinician who was blinded to the participant's status. Sensitivity of the definition was evaluated in 584 infants aged<2 years with suspected intussusception (533 infants in Hanoi; 51 in Melbourne). Specificity was evaluated in 638 infants aged<2 years presenting with clinical features consistent with intussusception but for whom another diagnosis was established (234 infants in Hanoi; 404 in Melbourne). FINDINGS In both locations the definition used was sensitive (96% sensitivity in Hanoi; 98% in Melbourne) and specific (95% specificity in Hanoi; 87% in Melbourne) for intussusception among infants with sufficient data to allow classification (449/533 in Hanoi; 50/51 in Melbourne). Reanalysis of patients with missing data suggests that modifying minor criteria would increase the applicability of the definition while maintaining good sensitivity (96-97%) and specificity (83-89%). CONCLUSION The clinical case definition was sensitive and specific for the diagnosis of acute intussusception in infants in both a developing country and a developed country but minor modifications would enable it to be used more widely.
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Affiliation(s)
- Julie E Bines
- Murdoch Children's Research Institute, Melbourne, Australia.
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