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Olds TS, Norton KI, Lowe EL, Olive S, Reay F, Ly S. Modeling road-cycling performance. J Appl Physiol (1985) 1995; 78:1596-611. [PMID: 7615475 DOI: 10.1152/jappl.1995.78.4.1596] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
This paper presents a complete set of equations for a "first principles" mathematical model of road-cycling performance, including corrections for the effect of winds, tire pressure and wheel radius, altitude, relative humidity, rotational kinetic energy, drafting, and changed drag. The relevant physiological, biophysical, and environmental variables were measured in 41 experienced cyclists completing a 26-km road time trial. The correlation between actual and predicted times was 0.89 (P < or = 0.0001), with a mean difference of 0.74 min (1.73% of mean performance time) and a mean absolute difference of 1.65 min (3.87%). Multiple simulations were performed where model inputs were randomly varied using a normal distribution about the measured values with a SD equivalent to the estimated day-to-day variability or technical error of measurement in each of the inputs. This analysis yielded 95% confidence limits for the predicted times. The model suggests that the main physiological factors contributing to road-cycling performance are maximal O2 consumption, fractional utilization of maximal O2 consumption, mechanical efficiency, and projected frontal area. The model is then applied to some practical problems in road cycling: the effect of drafting, the advantage of using smaller front wheels, the effects of added mass, the importance of rotational kinetic energy, the effect of changes in drag due to changes in bicycle configuration, the normalization of performances under different conditions, and the limits of human performance.
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30 |
87 |
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Wang J, Lu J, Ly SY, Vuki M, Tian B, Adeniyi WK, Armendariz RA. Lab-on-a-Cable for electrochemical monitoring of phenolic contaminants. Anal Chem 2000; 72:2659-63. [PMID: 10857651 DOI: 10.1021/ac991054y] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The "Lab-on-a-Cable" concept, based on scaling down an electrochemical flow system to a cable platform, is described. The system integrates the analyte collection and the sample handling, with the electrochemical detection of the reaction product in a sealed cylindrical unit, connected to a long shielded cable. An enzymatic assay, involving collection of a phenolic substrate, its mixing with an internally delivered tyrosinase solution, and amperometric detection of the liberated quinone product, is used for illustrating the operation of the flow probe and demonstrating its advantages over remote phenol sensors. The internal buffer solution ensures independence of sample conditions such as pH, ionic strength, or natural conditions, that commonly influences the performance of remote sensors. The "built-in" flow pulsation of the integrated micropump is exploited for a sensitive hydrodynamic-modulation voltammetric detection of hydrazine and peroxide pollutants.
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June RK, Ly S, Fyhrie DP. Cartilage stress-relaxation proceeds slower at higher compressive strains. Arch Biochem Biophys 2008; 483:75-80. [PMID: 19111671 DOI: 10.1016/j.abb.2008.11.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 11/20/2008] [Accepted: 11/29/2008] [Indexed: 11/24/2022]
Abstract
Articular cartilage is the connective tissue which covers bone surfaces and deforms during in vivo activity. Previous research has investigated flow-dependent cartilage viscoelasticity, but relatively few studies have investigated flow-independent mechanisms. This study investigated polymer dynamics as an explanation for the molecular basis of flow-independent cartilage viscoelasticity. Polymer dynamics predicts that stress-relaxation will proceed more slowly at higher volumetric concentrations of polymer. Stress-relaxation tests were performed on cartilage samples after precompression to different strain levels. Precompression increases the volumetric concentration of cartilage biopolymers, and polymer dynamics predicts an increase in relaxation time constant. Stress-relaxation was slower for greater precompression. There was a significant correlation between the stress-relaxation time constant and cartilage volumetric concentration. Estimates of the flow-dependent timescale suggest that flow-dependent relaxation occurs on a longer timescale than presently observed. These results are consistent with polymer dynamics as a mechanism of cartilage viscoelasticity.
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Research Support, Non-U.S. Gov't |
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30 |
4
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Yoo K, Cho J, Ly S. Vitamin D Intake and Serum 25-Hydroxyvitamin D Levels in Korean Adults: Analysis of the 2009 Korea National Health and Nutrition Examination Survey (KNHANES IV-3) Using a Newly Established Vitamin D Database. Nutrients 2016; 8:nu8100610. [PMID: 27690097 PMCID: PMC5083998 DOI: 10.3390/nu8100610] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/23/2016] [Accepted: 09/24/2016] [Indexed: 01/08/2023] Open
Abstract
Vitamin D is important for maintaining bone health and may prevent various diseases (i.e., cardiovascular disease and cancer). The aim of this study was to estimate vitamin D intakes of Korean adults using the Korea National Health and Nutrition Examination Survey (KNHANES, 2009) data and a newly established vitamin D database. KNHANES (2009) participants (n = 4541; 2021 men; 2520 women) aged ≥20 years were included. Dietary vitamin D intake, serum 25-hydroxyvitamin D (25(OH)D), and the relationship between vitamin D intake and serum 25(OH)D were evaluated. In men and women, vitamin D intakes were 4.00 ± 0.17 µg/day and 2.6 ± 0.1 µg/day respectively, and serum 25(OH)D concentrations were 19.78 ± 0.33 ng/mL and 17.10 ± 0.26 ng/mL respectively. Serum 25(OH)D concentrations of men aged <50 years and women aged >20 years were under 20 ng/mL. After adjusting for confounding factors, the positive relationship between vitamin D intake and serum 25(OH)D was observed in total subjects (p < 0.05), excluding participants ≥50 years old. The main food sources for vitamin D among Korean adults were fish/shellfish (71.34%) and egg (14.89%). Korean adults should increase their serum 25(OH)D concentrations by increasing vitamin D intake.
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Journal Article |
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28 |
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Noh JR, Kim YH, Hwang JH, Gang GT, Yeo SH, Kim KS, Oh WK, Ly SY, Lee IK, Lee CH. Scoparone inhibits adipocyte differentiation through down-regulation of peroxisome proliferators-activated receptor γ in 3T3-L1 preadipocytes. Food Chem 2013; 141:723-30. [PMID: 23790840 DOI: 10.1016/j.foodchem.2013.04.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2011] [Revised: 09/26/2012] [Accepted: 04/07/2013] [Indexed: 12/11/2022]
Abstract
This study was performed to investigate the effect of scoparone on the differentiation of 3T3-L1 preadipocytes. Scoparone inhibited triglyceride (TG) accumulation in the mature adipocytes, evidenced by Oil-red O staining and intracellular quantification. Real time-PCR analysis showed that scoparone significantly down-regulated the mRNA expression of key adipogenic transcription factors, PPARγ, C/EBPα, compared with mature adipocytes. Scoparone appeared to reduce mRNA expression of SREBP1c and FAS being related to the late stage of adipogenesis. Furthermore, aP2 and CD36/FAT, as adipocyte-specific genes, were decreased in mature adipocytes by scoparone treatment. Moreover, scoparone inhibited the up-regulated expression of PPARγ target genes by rosiglitazone to near that observed in cells treated with GW9662. The luciferase assay revealed that scoparone negatively regulates the transcriptional activity of PPARγ. Chromatin immunoprecipitation assay also showed that participation of scoparone in the regulation of PPARγ. Collectively, scoparone has a PPARγ antagonic effect and suppresses differentiation through down-regulation of adipogenic genes by PPARγ inhibition in 3T3-L1 preadipocytes.
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Research Support, Non-U.S. Gov't |
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25 |
6
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Noh JR, Kim YH, Gang GT, Hwang JH, Lee HS, Ly SY, Oh WK, Song KS, Lee CH. Hepatoprotective effects of chestnut (Castanea crenata) inner shell extract against chronic ethanol-induced oxidative stress in C57BL/6 mice. Food Chem Toxicol 2011; 49:1537-43. [DOI: 10.1016/j.fct.2011.03.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Revised: 03/15/2011] [Accepted: 03/23/2011] [Indexed: 12/31/2022]
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23 |
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Noh JR, Lee IK, Ly SY, Yang KJ, Gang GT, Kim YH, Hwang JH, Yun BS, Lee CH. A Phellinus baumii Extract Reduces Obesity in High-Fat Diet-Fed Mice and Absorption of Triglyceride in Lipid-Loaded Mice. J Med Food 2011; 14:209-18. [DOI: 10.1089/jmf.2010.1152] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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20 |
8
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Merigou D, Beylot-Barry M, Ly S, Doutre MS, Texier-Maugein J, Billes P, Beylot C. Primary cutaneous Nocardia asteroides infection after heart transplantation. Dermatology 2000; 196:246-7. [PMID: 9568416 DOI: 10.1159/000017883] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Skin diseases due to Nocardia are rare in Europe and usually occur as the secondary localization of a pulmonary lesion in immunocompromised patients. We describe a cutaneous pyoderma and cold abscess due to Nocardia asteroides infection in a cardiac transplant recipient. An insect bite represents the wound of this soil saprophyte belonging to the actinomycetes. Treatment by sulfone and ampicillin-clavulanic acid allowed the regression of lesions without extracutaneous dissemination.
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Case Reports |
25 |
19 |
9
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Ding YC, Sun GC, Lu Y, Ly SY. The vascular microanatomy of skin territory of posterior forearm and its clinical application. Ann Plast Surg 1989; 22:126-34. [PMID: 2735707 DOI: 10.1097/00000637-198902000-00007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We have undertaken a microanatomical study of a new donor site--the posterior forearm territory--on 43 cadaver arms. Two axial arteries were found, and both the fasciocutaneous flap and the fascial flap could be elevated with the two arteries on the posterior forearm. The posterior forearm flap was transferred to the hand to repair deformities of the wrist, the first web space, the dorsal hand, and the metacarpophalangeal joints in eight cases. The result was very satisfactory. The posterior forearm flap is near the hand, easy to perform, and reliable. It is a one-stage operation and does not sacrifice a main artery. In this article we demonstrate our own ideas about flap extension, which is valuable for clinical application.
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Case Reports |
36 |
13 |
10
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Laurence TA, Negres RA, Ly S, Shen N, Carr CW, Alessi DA, Rigatti A, Bude JD. Role of defects in laser-induced modifications of silica coatings and fused silica using picosecond pulses at 1053 nm: II. Scaling laws and the density of precursors. OPTICS EXPRESS 2017; 25:15381-15401. [PMID: 28788965 DOI: 10.1364/oe.25.015381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
We investigate the role of defects in laser-induced damage of fused silica and of silica coatings produced by e-beam and PIAD processes which are used in damage resistant, multi-layer dielectric, reflective optics. We perform experiments using 1053 nm, 1-60 ps laser pulses with varying beam size, number of shots, and pulse widths in order to understand the characteristics of defects leading to laser-induced damage. This pulse width range spans a transition in mechanisms from intrinsic material ablation for short pulses to defect-dominated damage for longer pulses. We show that for pulse widths as short as 10 ps, laser-induced damage properties of fused silica and silica films are dominated by isolated absorbers. The density of these precursors and their fluence dependence of damage initiation suggest a single photon process for initial energy absorption in these precursors. Higher density precursors that initiate close to the ablation threshold at shorter pulse widths are also observed in fused silica, whose fluence and pulse width scaling suggest a multiphoton initiation process. We also show that these initiated damage sites grow with subsequent laser pulses. We show that scaling laws obtained in more conventional ways depend on the beam size and on the definition of damage for ps pulses. For this reason, coupling scaling laws with the density of precursors are critical to understanding the damage limitations of optics in the ps regime.
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Chea N, Yi SD, Rith S, Seng H, Ieng V, Penh C, Mardy S, Laurent D, Richner B, Sok T, Ly S, Kitsutani P, Asgari N, Roces MC, Buchy P, Tarantola A. Two clustered cases of confirmed influenza A(H5N1) virus infection, Cambodia, 2011. ACTA ACUST UNITED AC 2014; 19. [PMID: 24993554 DOI: 10.2807/1560-7917.es2014.19.25.20839] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In February 2011, a mother and her child from Banteay Meanchey Province, Cambodia, were diagnosed, postmortem, with avian influenza A(H5N1) virus infection. A field investigation was conducted by teams from the Cambodian Ministry of Health, the World Health Organization and the Institut Pasteur in Cambodia. Nasopharyngeal, throat and serum specimens collected from 11 household or three neighbour contacts including two suspect cases tested negative by reverse transcriptase-polymerase chain reaction (RT-PCR) for A(H5N1). Follow-up sera from the 11 household contacts also tested negative for A(H5N1) antibodies. Twenty-six HCW who were exposed to the cases without taking adequate personal protective measures self-monitored and none developed symptoms within the two following weeks. An unknown number of passengers travelling with the cases on a minibus while they were symptomatic could not be traced but no clusters of severe respiratory illnesses were detected through the Cambodian surveillance systems in the two weeks after that. The likely cause of the fatal infection in the mother and the child was common-source exposure in Preah Sdach District, Prey Veng Province. Human-to-human transmission of A(H5N1) virus was unlikely but genetic susceptibility is suspected. Clusters of A(H5N1) virus infection should be systematically investigated to rule out any human-to-human transmission.
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Journal Article |
11 |
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12
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Noh JR, Lee IK, Kim YH, Gang GT, Hwang JH, Ly SY, Yun BS, Lee CH. Antiatherogenic Effect of Antioxidant Polyphenols from Phellinus baumii in Apolipoprotein E-Deficient Mice. ANNALS OF NUTRITION AND METABOLISM 2011; 59:145-53. [DOI: 10.1159/000334264] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2011] [Accepted: 10/04/2011] [Indexed: 11/19/2022]
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Duffau P, Beylot-Barry M, Palussiere J, Ly S, Cogrel O, Doutre MS. Necrotic livedo after vertebroplasty. Br J Dermatol 2007; 156:382-3. [PMID: 17223885 DOI: 10.1111/j.1365-2133.2006.07625.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Review |
18 |
7 |
14
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Blanco P, Ly S, Beylot Barry M, Laurent F, Roques X, Doutre M, Beylot C. Surgical treatment of an endovascular metastatic melanoma of the superior vena cava. Dermatology 1999; 199:156-7. [PMID: 10559584 DOI: 10.1159/000018225] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A 42-year-old woman, who had undergone excision of a melanoma of her right forearm 3 years before (Breslow's index 4.4 mm), was admitted to hospital for the evaluation of an superior vena cava syndrome. The thoracic CT scan and the phlebography showed obstruction of the superior vena cava by an endovascular tumor. Abdominal, pelvis and cranial CT scans did not reveal any other metastatic localization. Surgery with extracorporeal circulation was performed. The mass was resected and histopathologic examination confirmed the endovascular metastatic melanoma. There was no heart metastasis. The patient was then given a polychemotherapy. She was still alive after 18 months of follow-up after the initial metastasis. To our knowledge, no similar case has previously been reported and surgical treatment, as for isolated heart metastatic melanoma, may be considered for vascular metastasis, as in our case.
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Case Reports |
26 |
6 |
15
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Martin-Bracciani N, Cogrel O, Beylot-Barry M, Ly S, Doutre MS, Beylot C. [Strip papular mucinosis associated with systemic sclerosis]. Ann Dermatol Venereol 2004; 131:361-4. [PMID: 15258510 DOI: 10.1016/s0151-9638(04)93615-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Other than discreet infra-clinical mucinous deposits observed during many inflammatory dermatoses, clinically visible dermal mucinosis can sometimes be associated with collagenosis. It is usually lupus and very rarely scleroderma. In this case, no confusion with papular mucinosis must be made. CASE REPORT A 51 year-old woman presented with infiltrated erythematous lesions in strips on the inner sides of the thighs and legs, associated with myalgia, arthralgia and puffy fingers. Mixed connective tissue disease was the initial diagnosis. The clinical picture was rapidly completed by sclerodactylia, telangiectasia, a Raynaud's syndrome and esophageal involvement leading to the diagnosis of CREST-type systemic scleroderma. The biopsy of the erythematous strip lesions revealed a dermal mucinosis. Treatment with hydroxychloroquine led to the regression of the mucinous lesions and the stabilization of the scleroderma, which, four years later, had not developed further. DISCUSSION Dermal mucinosis can accompany lupus erythematosus, in rare cases dermatomyositis and, in exceptional cases, scleroderma. The clinical presentation varies with large infiltrated plaques, reticulated or papulo-nodular lesions. Conversely, strip lesions such as those observed in our patient have never been reported till now. The association of a localized dermal mucinosis and a scleroderma must not lead to the erroneous diagnosis of papular mucinosis of clearly differing prognosis. The occurrence of a mucinosis during collagenosis might be related to enhanced synthesis of mucin by the fibroblasts mediated by the inflammatory cytokines, increased in this context.
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Case Reports |
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16
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Ly SY, Rebut-Bonneton C, Miravet L. Effects of the calcium antagonist, diltiazem on in vitro and in vivo/in vitro bone resorption. Horm Metab Res 1985; 17:152-5. [PMID: 3838964 DOI: 10.1055/s-2007-1013476] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The effect of the calcium antagonist diltiazem on bone resorption in organ culture has been investigated. It was found that diltiazem was ineffective alone but that in concentrations above 5 mumol/l it reduced mineral and organic resorption induced in vitro by 1.25 dihydroxycholecalciferol (1.25 (OH)2D3). No additivity with calcitonin effects was observed. Diltiazem did not significantly affect bone resorbing activity stimulated by 24,25(OH)2D3. Bone resorption was measured by an in vivo/in vitro technique using 45Ca prelabelled mice. Compared with 1.25(OH)2D3 alone treated group (0.480 pmol/g), it was found that diltiazem (100 nmol/g) reduced bone resorption without effect on calcium and phosphorus plasmatic concentrations at death. These data suggest that such a calcium antagonist is able to inhibit 1.25-(OH)2D3-increased-bone resorption either in vitro or in vivo/in vitro.
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40 |
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17
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Yun MY, Bae EY, Lee SW, Yim SH, Ly SY, Choi HJ. Anti-photoaging effect of skin cream manufactured with ziyuglycoside I isolated from Sanguisorba officinalis on ultraviolet B-induced hairless mice. Biosci Biotechnol Biochem 2019; 83:1197-1204. [DOI: 10.1080/09168451.2019.1607247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
ABSTRACT
In this study, skin cream containing ziyuglycoside I isolated from Sanguisorba officinalis was manufactured and examined the protective effects of the skin cream against UVB-induced hairless mice. UVB-induced hairless mice were topically treated with the skin cream once a day for 5 weeks. Application of the skin cream did not exhibit side effect on body growth showing normal body weight and food efficiency in the mice. The skin cream treatment also was inhibited mRNA expression of interleukin (IL)-1β, matrix metalloproteinase (MMP)-2, MMP-9, and MMP-2 protein expression in the mice. Furthermore, the skin cream treatment inhibits epidermal wrinkle formation, wrinkle depth, wrinkle thickness, and collagen degradation in UVB-induced hairless mice. Therefore, the skin cream was able to play a role in the attenuation of photoaging caused by UVB irradiation via downregulation of mRNA expression of inflammatory cytokine IL-1β, MMP-2, MMP-9, and suppression of MMP-2 proteins expression.
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Ly S, Kim KH. Inactivation of acetyl-coenzyme A carboxylase and fatty acid synthesis by N2, O2'-dibutyryl guanosine cyclic 3',5'-monophosphate and N6,O2'-dibutyryl adenosine cyclic 3',5'-monophosphate in isolated hepatocytes. Arch Biochem Biophys 1982; 217:251-6. [PMID: 6127057 DOI: 10.1016/0003-9861(82)90500-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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43 |
4 |
19
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Ly S, Beylot-Barry M, Beyssac R, Doutre MS, Beylot C. [Sweet syndrome associated with Crohn disease]. Rev Med Interne 1995; 16:931-3. [PMID: 8570958 DOI: 10.1016/0248-8663(96)80816-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The association of Sweet's syndrome and Crohn's disease is rare. We report a new case of such association. A 45 year-old woman developed a diarrhea, fever, and skin lesions consistent with a presumptive diagnosis of Sweet's syndrome. Crohn's disease was also diagnosed. Oral prednisone, associated with mesalazine, effected improvement of both cutaneous lesions and bowel disease. The ten cases of the literature and ours show that Sweet's syndrome may occur during an acute phase of Crohn's disease. Most of the time, Crohn's disease has already been diagnosed. However, this was not so with our patient, wherein lies the originality of our case. A general corticotherapy is the preferred course of treatment.
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Case Reports |
30 |
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20
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Rimón MM, Kheng S, Hoyer S, Thach V, Ly S, Permin AE, Pièche S. Malaria dipsticks beneficial for IMCI in Cambodia. Trop Med Int Health 2003; 8:536-43. [PMID: 12791059 DOI: 10.1046/j.1365-3156.2003.01045.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVES The Integrated Management of Childhood Illness (IMCI) approach and new clinical treatment guidelines to control malaria among children less than 5 years old were introduced recently in Cambodia. This study was conducted to finalize the malaria part of the national IMCI fever chart. METHODS A total of 323 sick children 2-59 months old were studied at rural health centres in northern Cambodia from February to April 2000. Cases with fever (by axillary temperature or history) or anaemia (by palmar pallor) were tested with dipsticks for Plasmodium falciparum and Plasmodium vivax in high and low malaria risk areas and, if positive, treated with anti-malarials. RESULTS The draft IMCI chart identified children with malaria safely and effectively (sensitivity 14 of 15, approximately 93% and specificity 292 of 308, approximately 95%). The study confirmed the potential of malaria dipsticks as a part of IMCI case management. CONCLUSION The Cambodian Ministry of Health will use the studied malaria chart during the Early Implementation Phase of IMCI. Dipsticks able to detect P. falciparum and P. vivax with high sensitivity and acceptable cost will be needed for this purpose. To promote the rational use of dipsticks, the National Centre for Malaria Control, Parasitology and Entomology (Centre National de Malaridogie, Parasitologie et Entomologie, CNM) should list all known malaria risk areas in the country and prepare detailed local maps guiding case management especially in transitional zones.
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Evaluation Study |
22 |
4 |
21
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No JR, Park SY, Kim MK, Jo HY, Lee IY, Ly SY. The Effects of Levan on Blood Lipids and the Absorption of Calcium in Rats Fed a Low Calcium Diet. ACTA ACUST UNITED AC 2007. [DOI: 10.3746/jkfn.2007.36.1.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Abstract
Pituitary apoplexy (PA), defined by the occurrence of a massive hemorrhagic necrotic rearrangement within a pituitary adenoma, is rare. Its occurrence can be associated with certain risk factors, including anticoagulation. We report the first case of PA with rivaroxaban which is one of the new oral anticoagulants: a 73 year-old patient presenting with severe headache and visual field deterioration. Surgery was performed. Radiotherapy treatment was decided three months after surgery because of tumor residue.
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Case Reports |
8 |
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23
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Ly S, Shen N, Negres RA, Carr CW, Alessi DA, Bude JD, Rigatti A, Laurence TA. The role of defects in laser-induced modifications of silica coatings and fused silica using picosecond pulses at 1053 nm: I. Damage morphology. OPTICS EXPRESS 2017; 25:15161-15178. [PMID: 28788946 DOI: 10.1364/oe.25.015161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
Laser-induced damage with ps pulse widths straddles the transition from intrinsic, multi-photon ionization and avalanche ionization-based ablation with fs pulses to defect-dominated, thermal-based damage with ns pulses. We investigated the morphology of damage for fused silica and silica coatings between 1 ps and 60 ps at 1053 nm. Using calibrated laser-induced damage experiments, in situ imaging, and high-resolution optical microscopy, atomic force microscopy, and scanning electron microscopy, we show that defects play an important role in laser-induced damage down to 1 ps. Three types of damage are observed: ablation craters, ultra-high density pits, and smooth, circular depressions with central pits. For 10 ps and longer, the smooth, circular depressions limit the damage performance of fused silica and silica coatings. The observed high-density pits and material removal down to 3 ps indicate that variations in surface properties limit the laser-induced damage onset to a greater extent than expected below 60 ps. Below 3 ps, damage craters are smoother although there is still evidence as seen by AFM of inhomogeneous laser-induced damage response very near the damage onset. These results show that modeling the damage onset only as a function of pulse width does not capture the convoluted processes leading to laser induced damage with ps pulses. It is necessary to account for the effects of defects on the processes leading to laser-induced damage. The effects of isolated defects or inhomogeneities are most pronounced above 3 ps but are still discernible and possibly important down to the shortest pulse width investigated here.
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Gérard E, Ly S, Cogrel O, Pham-Ledard A, Fauconneau A, Penchet I, Ouhabrache N, Vergier B, Beylot-Barry M. [Primary localized cutaneous nodular amyloidosis: A diagnostic and therapeutic challenge]. Ann Dermatol Venereol 2015; 143:134-8. [PMID: 26724842 DOI: 10.1016/j.annder.2015.10.596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 10/12/2015] [Accepted: 10/29/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Nodular primary localized cutaneous amyloidosis (PLCA) is a rare subtype of localized cutaneous amyloidosis in which amyloid protein is derived from immunoglobulin light chains. Follow-up for progression to systemic amyloidosis or autoimmune disease is mandatory. No consensus exists regarding treatment. PATIENTS AND METHODS We report a case of nodular PLCA in a 49-year-old man, presenting as an asymptomatic nodule of the nose. Skin biopsy revealed diffuse deposition of amyloid associated with plasmocyte proliferation. Monotypic kappa light-chain restriction was observed. Extensive systemic evaluation, including bone marrow biopsy and PET scan, was negative. Protein electrophoresis and immunofixation in serum and urine were normal. The nodule was treated with radiotherapy but there was no response. Mohs micrographic surgery (MMS) was performed with no recurrence at 6 months of follow-up. No systemic progression was observed one year after the initial diagnosis. DISCUSSION Since nodular PLCA may have a cutaneous presentation similar to that of primary systemic amyloidosis, evaluation for systemic amyloidosis is necessary. Treatment of amyloidosis is difficult. Radiotherapy appears ineffective in treating this type of primary cutaneous amyloidosis, and surgical treatment, where possible, is a good option, especially with MMS, which allows both controlled excision and minimal margins.
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Melse‐Boonstra A, Talsma EF, Fitri A, Dekkers R, Heuvel E, Boelsma E, Ly S, Stomph TJ, Zeder C, Moretti D. Milk Enhances In Vitro Accessibility and Fractional Absorption of Zinc (FAZ) from High Phytate Intrinsically Labelled Rice in Humans. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.761.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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