783 results on '"Ma, Kim"'
Search Results
2. The impact of cancer metastases on COVID‐19 outcomes: A COVID‐19 and Cancer Consortium registry‐based retrospective cohort study.
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Castellano, Cecilia A., Sun, Tianyi, Ravindranathan, Deepak, Hwang, Clara, Balanchivadze, Nino, Singh, Sunny R. K., Griffiths, Elizabeth A., Puzanov, Igor, Ruiz‐Garcia, Erika, Vilar‐Compte, Diana, Cárdenas‐Delgado, Ana I., McKay, Rana R., Nonato, Taylor K., Ajmera, Archana, Yu, Peter P., Nadkarni, Rajani, O'Connor, Timothy E., Berg, Stephanie, Ma, Kim, and Farmakiotis, Dimitrios
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METASTASIS ,COVID-19 ,CANCER prognosis ,COHORT analysis ,INTENSIVE care units - Abstract
Background: COVID‐19 can have a particularly detrimental effect on patients with cancer, but no studies to date have examined if the presence, or site, of metastatic cancer is related to COVID‐19 outcomes. Methods: Using the COVID‐19 and Cancer Consortium (CCC19) registry, the authors identified 10,065 patients with COVID‐19 and cancer (2325 with and 7740 without metastasis at the time of COVID‐19 diagnosis). The primary ordinal outcome was COVID‐19 severity: not hospitalized, hospitalized but did not receive supplemental O2, hospitalized and received supplemental O2, admitted to an intensive care unit, received mechanical ventilation, or died from any cause. The authors used ordinal logistic regression models to compare COVID‐19 severity by presence and specific site of metastatic cancer. They used logistic regression models to assess 30‐day all‐cause mortality. Results: Compared to patients without metastasis, patients with metastases have increased hospitalization rates (59% vs. 49%) and higher 30 day mortality (18% vs. 9%). Patients with metastasis to bone, lung, liver, lymph nodes, and brain have significantly higher COVID‐19 severity (adjusted odds ratios [ORs], 1.38, 1.59, 1.38, 1.00, and 2.21) compared to patients without metastases at those sites. Patients with metastasis to the lung have significantly higher odds of 30‐day mortality (adjusted OR, 1.53; 95% confidence interval, 1.17–2.00) when adjusting for COVID‐19 severity. Conclusions: Patients with metastatic cancer, especially with metastasis to the brain, are more likely to have severe outcomes after COVID‐19 whereas patients with metastasis to the lung, compared to patients with cancer metastasis to other sites, have the highest 30‐day mortality after COVID‐19. Patients with metastatic cancer have more severe outcomes than patients without metastasis, with those with metastasis to the brain having the highest odds of severe COVID‐19. When adjusting for initial COVID‐19 severity, patients with metastasis to the lung, compared to patients with metastasis sites other than the lung, have the highest odds of 30‐day mortality. [ABSTRACT FROM AUTHOR]
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- 2024
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3. The Clinical, Genomic, and Transcriptomic Landscape of BRAF Mutant Cancers
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Kazandjian, Suzanne, primary, Rousselle, Emmanuelle, additional, Dankner, Matthew, additional, Cescon, David W., additional, Spreafico, Anna, additional, Ma, Kim, additional, Kavan, Petr, additional, Batist, Gerald, additional, and Rose, April A. N., additional
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- 2024
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4. 80: Overview of tumour sterilization rates in rectal cancers among treatment modalities; is more better?
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Gerard, Ian J., Ma, Kim, Vasilevsky, Carol-Ann, Boutros, Marylise, Enger, Shirin, Devic, Slobodan, and Vuong, Té
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RECTAL cancer , *CANCER treatment , *TUMORS - Published
- 2024
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5. The clinical, genomic, and transcriptomic landscape of BRAF mutant cancers
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Kazandjian, Suzanne, primary, Rousselle, Emmanuelle, additional, Dankner, Matthew, additional, Cescon, David W., additional, Spreafico, Anna, additional, Ma, Kim, additional, Kavan, Petr, additional, Batist, Gerald, additional, and Rose, April A.N., additional
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- 2023
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6. Serial imaging after pulmonary embolism and correlation with functional limitation at 12 months: Results of the ELOPE Study
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Ma, Kim A., Kahn, Susan R., Akaberi, Arash, Dennie, Carole, Rush, Christopher, Granton, John T., Anderson, David, Wells, Philip S., Rodger, Marc A., Solymoss, Susan, Kovacs, Michael J., Rudski, Lawrence, Shimony, Avi, Hernandez, Paul, Aaron, Shawn D., Pena, Elena, Abikhzer, Gad, and Hirsch, Andrew M.
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- 2018
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7. FEASIBILITY AND SAFETY OF ENDOSCOPIC ULTRASOUND-GUIDED DIFFUSING ALPHA EMITTERS RADIATION THERAPY FOR ADVANCED PANCREATIC CANCER: PRELIMINARY DATA.
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Miller, Corey, Lecavalier-Barsoum, Magali, Ma, Kim, Dutra, Miriam Santos, Kaitoukov, Youri, Bahoric, Boris, Tomic, Nada, Dinelle, Francine, Enger, Shirin, Batist, Gerald, Yang, Stephen, Laporta, Donald, Sahai, Anand V., Roberge, David, and Donath, David
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- 2024
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8. Song Chang-Il's Children's Literatureduring the Japanese imperialism
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Jem-ma Kim
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History ,Gender studies ,Religious studies ,Christianity - Published
- 2017
9. Wilms tumor arising in a child with X-linked nephrogenic diabetes insipidus
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El-Kares, Reyhan, Hueber, Pierre-Alain, Blumenkrantz, Miriam, Iglesias, Diana, Ma, Kim, Jabado, Nada, Bichet, Daniel G., and Goodyer, Paul
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- 2009
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10. A Study on Affecting Factors in English Examination Anxiety
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No Ma Kim
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060201 languages & linguistics ,0602 languages and literature ,05 social sciences ,medicine ,Autodidacticism ,Anxiety ,0501 psychology and cognitive sciences ,06 humanities and the arts ,medicine.symptom ,Psychology ,050104 developmental & child psychology ,Clinical psychology - Published
- 2016
11. Acrylamide in daily food in the metropolitan area of Hanoi, Vietnam
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Hai, Yen Dao, primary, Tran-Lam, Thanh-Thien, additional, Nguyen, Trung Quang, additional, Vu, Nam Duc, additional, Ma, Kim Hoi, additional, and Le, Giang Truong, additional
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- 2019
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12. [THE DIAGNOSTIC APPROACHES TO VERIFICATION OF STREPTOCOCCUS INFECTION IN PATIENTS WITH INFECTIOUS MONONUCLEOSIS]
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MA Kim, Av, Labushkina, En, Simovanian, and Gg, Kharseeva
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Immunoassay ,Male ,Adolescent ,Streptococcus pyogenes ,Convalescence ,Viridans Streptococci ,Polymerase Chain Reaction ,Early Diagnosis ,Bacterial Proteins ,Child, Preschool ,Streptococcal Infections ,Acute Disease ,Streptolysins ,Humans ,Female ,Infectious Mononucleosis ,Reagent Kits, Diagnostic ,Child - Abstract
The Rostovskii state medical university of Minzdrav of Russia, 344022 Rostov-on-Don, Russia The analysis is applied concerning significance of laboratory techniques of verification of streptococcus infection (bacteriological analysis, detection of anti-streptolysin O in pair serums) in 148 patients with infectious mononucleosis aged from 3 to 15 years. The content of anti-streptolysin O exceeded standard in 41 ± 4.8% of patients with concomitant in acute period and in 49.5 ± 4.9% during period of re-convalescence. This data differed from analogous indicator in patients with negative result of examination on streptococcus infection independently of period of disease (9.3 ± 2.8%). The exceeding of standard of anti-streptolysin O was detected more frequently (t ≥ 2, P ≥ 95%) in patients with isolation of Streptococcus pyogenes (56.9 ± 5.8%) than in patients with Streptococcus viridans (31.2 ± 6.5%). The concentration of anti-streptolysin 0 in patients with concomitant streptococcus infection varied within limits 200-1800 IE/ml. The minimal level of anti-streptolysin O (C = 200 IE/mI) was detected independently of type of isolated Streptococcus and period of disease. The high levels of anti-streptolysin O were observed exclusively in patients with isolation of Streptococcus pyogenes. In blood serum ofpatient with concomitant streptococcus infection (Streptococcus pyogenes + Streptococcus viridans) increasing of level of anti-streptolysin O was detected in dynamics of diseases from minimal (C = 200 IE/ ml) to moderately high (200C400 IE/mI). It is demonstrated that to identify streptococcus infection in patients with infectious mononucleosis the anamnesis data is to be considered. The complex bacteriological and serological examination ofpatients is to be implemented This is necessary for early detection ofpatients with streptococcus infection and decreasing risk of formation of streptococcus carrier state.
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- 2016
13. Refractory IgG Warm Autoimmune Hemolytic Anemia Treated with Eculizumab: A Novel Application of Anticomplement Therapy
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Ma, Kim and Caplan, Stephen
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Article Subject - Abstract
Warm autoimmune hemolytic anemia (wAIHA) is the most common form of AIHA, with corticosteroids in first-line treatment resulting in a 60–80% response rate. Atypical wAIHA and IgG plus complement mediated disease have a higher treatment failure rate and higher recurrence rate. We report a case of severe wAIHA secondary to Waldenström macroglobulinemia with life threatening intravascular hemolysis refractory to prednisone, rituximab, splenectomy, and plasmapheresis. A four-week treatment of eculizumab in this heavily pretreated patient resulted in a sustained increase in hemoglobin and transfusion independence, suggesting a role for complement inhibition in refractory wAIHA.
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- 2016
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14. N-terminal of prohormone brain natriuretic peptide predicts functional limitation one year following pulmonary embolism: Results from the ELOPE study
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Ma, Kim, primary, Kahn, Susan R., additional, Hirsch, Andrew M., additional, Akaberi, Arash, additional, Anderson, David R., additional, Wells, Philip S., additional, Rodger, Marc, additional, Solymoss, Susan, additional, Kovacs, Michael J., additional, Rudski, Lawrence, additional, Shimony, Avi, additional, Dennie, Carole, additional, Rush, Chris, additional, Hernandez, Paul, additional, Aaron, Shawn D., additional, and Granton, John T., additional
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- 2017
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15. Interaction of actinides(III) with aluminosilicate colloids
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Ma Kim, A. Priemyshev, Petra J. Panak, D. Breban, Ji Kim, Jong-Il Yun, and A. Mansel
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chemistry.chemical_classification ,Chemistry ,Metal ions in aqueous solution ,Inorganic chemistry ,complex mixtures ,Hydrolysis ,chemistry.chemical_compound ,Colloid ,Colloid and Surface Chemistry ,Aluminosilicate ,Phase (matter) ,Humic acid ,Particle size ,Silicic acid ,Nuclear chemistry - Abstract
The present investigation deals with how aquatic hydroxy aluminosilicate (HAS) colloids are generated in nature via co-nucleation of Si and Al in the presence of humic acid and moreover how trivalent actinides are integrated into the process. For the experiment, 241 Am (5 × 10 −8 M) is introduced into a colloid forming mother solution where competition takes place for the complexation of two trivalent metal ions, Al and Am, each with two different ligands: 14 C-labelled humic acid and silicic acid. Colloids thus formed are separated from precipitate and solution by sequential filtrations at 450 and 1.5 nm pore size. Formation of the colloid-borne Al and Am species in the neutral pH range is ascertained radiometrically by determining the phase distribution of 14 C and Am, respectively. Varying the pH as well as the concentration of reaction components involved, a broad screening experiment is further carried out. Replacing Am by Cm, the speciation of colloid-borne Cm is made by time-resolved laser fluorescence spectroscopy (TRLFS), exciting at two different wavelengths. A direct excitation is made at 382 nm, whereas an indirect excitation is followed at 370 nm to confirm the sensitized Cm excitation via Cm-borne humic acid. The result substantiates the formation of colloid-borne Cm in a mixed structure of HAS and humic acid aggregated. Affinity of Am and Al binding to silicic and humic acid, leading to incorporation into the colloidal phase, can be correlated with their different hydrolysis behaviour. The Am 3+ ion, less hydrolyzing than the Al 3+ ion, is favoured for complexation with humic acid and thus discriminated in the co-nucleation with silicic acid. In the pH range (≥6.6) where the Am 3+ ion becomes hydrolyzed, a synergic bond coupling of hydrolyzed Am species yields a mixed hybrid of HAS-humic colloid-borne Am. As measured by laser-induced breakdown detection (LIBD), colloids thus formed reveal an average particle size of about 15 ± 5 nm hard sphere diameter. The value is comparable to that of Am-HAS colloids and remains consistent for a 2-month period of observation. The present study shows that aquatic colloids composed of HAS and humic acid combine actinides via different but synergic mechanisms and hence enhance the stability of colloid-borne actinides.
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- 2007
16. Interaction of actinides(III) with aluminosilicate colloids in 'statu nascendi'
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Ji Kim, Jong-Il Yun, A. Priemyshev, Petra J. Panak, and Ma Kim
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chemistry.chemical_compound ,Silanol ,Colloid ,Colloid and Surface Chemistry ,Curium ,Chemistry ,Aluminosilicate ,Inorganic chemistry ,chemistry.chemical_element ,Silicic acid ,Solubility ,Spectroscopy ,Dissociation (chemistry) - Abstract
The chemical interaction of trivalent actinides, Am(III) and Cm(III), during the formation of hydroxy-aluminosilicate (HAS) colloids is investigated starting with polysilanol (polysilicic acid) in the near neutral pH range of 4–9. Polymerisation and depolymerisation of silanol (silicic acid) are also examined to ascertain the optimal condition of HAS colloid formation with polysilanol. The formation of colloid-borne Am(III) is investigated radiometrically by varying the Al concentration from 10 −7 to 10 −3 M, while keeping the Si concentration constant at ≥10 −2 M. Spectroscopic speciation is performed by time-resolved laser fluorescence spectroscopy (TRLFS) to characterise how trivalent actinides become chemically incorporated in HAS colloids. For this purpose optically sensitive Cm is used. An average size of HAS colloids, as determined by laser-induced breakdown detection (LIBD), is found to be in the range of 10–20 nm in diameter, increasing with lowering pH. The SEM-EDXS analysis results in an atomic Si/Al ratio of 1.23 ± 0.03. The TRLFS speciation shows the formation of three different colloid-borne Cm species: Cm-HAS(I), Cm-HAS(II) and Cm-HAS(III). These results are different from the HAS colloid formation with monosilanol, in which only two species – Cm-HAS(I) and Cm-HAS(II) – are observed. The number of hydration water molecules in the three colloid-borne Cm species, as confirmed by measuring the fluorescence lifetime with TRLFS, varies from 7 for Cm-HAS(I), to 6 for Cm-HAS(II) and to 0–1 for Cm-HAS(III), which infers bi-dentate and tri-dentate oxo-bridging and structural incorporation of Cm, respectively. The prevailing Cm-HAS(III) species at pH 9 converts by decreasing pH first to Cm-HAS(II) and then to Cm-HAS(I), revealing a gradual dissociation of Cm from HAS colloids upon acidification.
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- 2005
17. Complexation of Cm(III) with aqueous silicic acid
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Ma Kim, Jae-Il Kim, Thomas Fanghänel, R. Klenze, and Petra J. Panak
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Colloid ,chemistry.chemical_compound ,Aqueous solution ,Polymerization ,Chemistry ,Stability constants of complexes ,Inorganic chemistry ,Silicic acid ,Physical and Theoretical Chemistry ,Solubility ,Chemical reaction ,Fluorescence spectroscopy - Abstract
SummaryThe complexation of248Cm(III) with aqueous silicic acid is investigated in the pH range of 1.5–9.0 in 0.03 M NaCl with varying the silicate concentration under and over saturation in reference to the solubility of amorphous silica in order to characterize the reaction with monosilicic and polysilicic acid. Speciation is made by time-resolved laser fluorescence spectroscopy (TRLFS) in combination with radiometric quantification. Three different complexation products are observed: Cm-silicate(I), Cm-silicate(II) and Cm-silicate(III). The first and second species are formed in under-saturation of silicic acid, whereas all three species are produced in over-saturation of silicic acid. The formation of Cm-silicate(I) following the reaction of Cm3+with H3SiO4−appears in both under and over-saturation of silicic acid only as a minor fraction at pH=4–7. Cm-silicate(II) and Cm-silicate(III) are found to be colloidal. Cm-silicate(II) shows its spectroscopic characteristics varying with the experimental condition, whereas Cm-silicate(III) formed exclusively with polysilicic acid remains consistent and stable. The experimental results indicate that a species conversion takes place as Cm-silicate(I) → Cm-silicate(II) → Cm-silicate(III) with increasing pH and silicon concentration. Only the reaction leading to the formation of Cm-silicate(I) can be quantified for its stability constant as logβ°=7.74±0.08.
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- 2005
18. Response to: Second-Line Treatment of Non-Small-Cell Lung Cancer with Wild-Type EGFR Status. What Is the Best Approach?
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Goulnar Kasymjanova, Ma Kim Anh, Jason Agulnik, and Victor Cohen
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Oncology ,medicine.medical_specialty ,Ramucirumab ,law.invention ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Randomized controlled trial ,law ,Internal medicine ,medicine ,Lung cancer ,Letter to the Editor ,Performance status ,business.industry ,medicine.disease ,Surgery ,030228 respiratory system ,chemistry ,Docetaxel ,Drug development ,030220 oncology & carcinogenesis ,Nintedanib ,Erlotinib ,business ,medicine.drug - Abstract
The Editor Current Oncology 15 September 2015 We thank Drs. Ibrahim Elghissassi, Saber Boutayeb, Hanane Inrhaoun, Hind Mrabti, and Hassan Errihani for their comments on our paper. The results of our practice review1 on the use of tyrosine kinase inhibitor (tki) at a single tertiary centre are not intended to diminish the important findings of prospective trials (delta and tailor)2,3. Yet the popular belief that randomized controlled trials inherently produce “gold standard” results and that all observational studies are inferior or noncontributory does a disservice, in some circumstances, to patient care, clinical investigation, and education of health care professionals. As an example, real-world data can be a useful aid for decision-making; assessing the value of a drug or technology often requires an understanding of its impact on current management in a practical, real-life setting. We acknowledge that the results from the above-mentioned trials demonstrate that, in patients with wild-type EGFR, chemotherapy is superior to erlotinib in the second-line setting in terms of progression-free survival. Unfortunately, little or no benefit in overall survival was observed, which is far from the result that we would like to achieve for our lung cancer patients. Additionally, it is important to recognize that a better toxicity profile for epidermal growth factor receptor tki therapy compared with chemotherapy was clearly demonstrated. That finding is not to be minimized, given the palliative nature of both treatments. Our study was not meant to challenge prospective data, but rather to push forward the notion that, in the real-life setting at least, tki therapy is still an acceptable option for some individuals —particularly when selecting therapy for patients with a poor or borderline performance status. For the purpose of our analysis, wild-type EGFR was defined as negative for the classical mutations at exons 18–21. Mutations were detected by real-time polymerase chain reaction using the standardized U.S. Food and Drug Administration–approved EntroGen kit (Woodland Hills, CA, U.S.A.). The possibility of patients having rare activating mutations cannot be excluded. We agree that that possibility could have led to better progression-free survival in patients treated with tki compared with patients receiving docetaxel treatment. However, such an analysis was beyond the scope of our study, considering its retrospective nature. Future prospective studies might want to explore that hypothesis. A very valid point was raised concerning the concept of treatment-free interval as reported by Odabas et al.4 We will consider re-evaluating our published results to determine if that parameter did indeed affect the success rate of second-line treatment in our study population. Finally, Dr. Elghissassi and colleagues are correct to state that neither docetaxel nor erlotinib are ideal second-line treatments. Fortunately, novel therapies are actively being developed, although they have yet to be integrated into common clinical practice. The major drivers of change will include more comprehensive genetic testing platforms, the identification of additional molecular subtypes of non-small-cell lung cancer, and advances in drug development. As already mentioned, studies evaluating two antiangiogenic drugs, nintedanib and ramucirumab, yielded positive results in this setting. Finally, promising new drugs targeting the immune checkpoint pathways are also being tested. The exciting results emerging from those tests will open tremendous possibilities for future research studies and offer hope that cures can be achieved for at least a subset of patients with advanced non-small-cell lung cancer.
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- 2016
19. Interaction of actinides with aluminosilicate colloids in statu nascendi
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Ji Kim, Ma Kim, Jong-Il Yun, and Petra J. Panak
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Silanol ,chemistry.chemical_compound ,Colloid ,Colloid and Surface Chemistry ,Curium ,Chemistry ,Aluminosilicate ,Phase (matter) ,Yield (chemistry) ,Inorganic chemistry ,Ionic bonding ,chemistry.chemical_element ,Chemical binding - Abstract
The chemical interaction of trivalent actinides, Am(III) and Cm(III) in the process of hydroxy aluminosilicate (HAS) colloid formation is investigated by time-resolved laser fluorescence spectroscopy (TRLFS) with the assistance of radiometry. A screening experiment is performed at the beginning to ascertain under what conditions HAS colloids are formed favourably and incorporate trivalent actinides in their oxo-bridge structure. While keeping the Si concentration constant at 10−3 mol l−1, the Al concentration is varied from 10−7 to 10−3 mol l−1 in the pH range from 4 to 9. The electrolyte medium is made constant with 0.03 M NaCl. A trace amount of 241Am or 248Cm is introduced at a concentration of 4.9×10−8 mol l−1. The favourable condition of HAS colloid formation as ascertained by radiometric experiment is found to be at around pH 5 with 10−6–10−5 mol l−1 Al for a marginal amount and at pH≥7 with 10−6–10−4 mol l−1 Al for a major amount. Spectroscopic speciation is made on Cm, for its high fluorescence yield, in various experimental solutions for the appraisal of its chemical binding within oxo-bridges of HAS colloids. Speciation made by TRLFS shows two colloid-borne Cm species, Cm-HAS(I) and Cm-HAS(II), which have seven and six hydration water molecules, respectively. These results put forward a conclusion that the former undergoes a bidentate oxo-bridge binding and the latter a tridentate binding. In the absence of Al, Cm undergoes reaction with silanol moieties to form Cm–silicate complexes, which are found to be distributed in three phases: ionic phase, colloid and precipitate. However, the formation of Cm–silicate colloids is marginal due to a low Cm concentration. Applying laser-induced breakdown detection (LIBD), an average size of colloids is found to be 11–13 nm in hard sphere diameter at different pH.
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- 2003
20. Interaction of actinides with aluminosilicate colloids in statu nascendi
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Klaus Köhler, Ma Kim, R. Klenze, Petra J. Panak, Ji Kim, and Jong-Il Yun
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Colloid ,Colloid and Surface Chemistry ,X-ray photoelectron spectroscopy ,Aluminosilicate ,Chemistry ,Desorption ,digestive, oral, and skin physiology ,Inorganic chemistry ,Ionic bonding ,Atomic ratio ,Particle size ,Ion - Abstract
A study is presented to elucidate how the trivalent actinide ions become incorporated into the formation of aluminosilicate colloids. The acidic Al solution of varying concentration from 10 −5 to 10 −3 mol l −1 , containing the Am 3+ or Cm 3+ ion at 4.9×10 −8 mol l −1 , is titrated with the alkaline Si solution of different concentrations from 10 −5 to 10 −3 mol l −1 to arrive at each prefixed pH from 4 to 9. The aluminosilicate precipitate is separated by filtration at 450 nm pore size. The filtrate containing ionic and colloidal species is subsequently put into filtration at 10-kDa-pore size (ca. 1.5 nm) to separate aluminosilicate colloids from ionic species in solution. The distribution of Am or Cm in the three different phases: precipitate, colloids and ionic species is analysed by radiometric measurement and the optimal conditions are ascertained for the formation of colloid-borne Am or Cm species. The particle size of the aluminosilicate colloids observed by atomic force microscope (AFM) appears to be 5–10 nm height and 10–50 nm length for most particles, whereas the average hard sphere diameter of preponderant particles evaluated by laser-induced breakdown detection (LIBD) appears to be 10–50 nm with an approximate mass concentration of 10–50 ppb. According to these data, the colloid number density may range from 10 11 to 10 14 particles per litre solution. XPS and EDX analyses on colloids result in an atomic ratio of Al/Si to an average value of 0.7, suggesting that it may vary from 0.5 to 1.0. The speciation of colloids by time-resolved laser fluorescence spectroscopy (TRLFS) shows the formation of two different colloid-borne Cm species as coordinated with bidentate and tridentate bindings within the aluminosilicate structure. The latter species becomes predominant at pH≥6. A desorption experiment reveals that Am incorporated into aluminosilicate colloids is not dissociable at pH 7 and 9, indicating the formation of a stable colloid-borne Am species.
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- 2003
21. A multicenter prospective study of risk factors and treatment of unusual site thrombosis
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Ma, Kim, primary, Wells, Phillip, additional, Guzman, Charlotte, additional, Anderson, David, additional, Blostein, Mark, additional, Hirsch, Andrew, additional, Lazo-Langner, Alejandro, additional, Kovacs, Michael J., additional, Rodger, Marc, additional, Tagalakis, Vicky, additional, and Kahn, Susan R., additional
- Published
- 2016
- Full Text
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22. Response to: Second-Line Treatment of Non-Small-Cell Lung Cancer with Wild-Type EGFR Status. What Is the Best Approach?
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Anh, Ma Kim, primary, Kasymjanova, Goulnar, additional, Cohen, Victor, additional, and Agulnik, Jason, additional
- Published
- 2016
- Full Text
- View/download PDF
23. Real-world safety and effectiveness of MVASI in metastatic colorectal cancer patients in Canada.
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Cheung, Winson Y., Samimi, Setareh, Ma, Kim, Knight, Gregory John, Kassam, Shaqil Nadirali, Colwell, Bruce, Beaudoin, Annie, Vincent, Mark David, Trinkaus, Mateya, Filion, Alain, Karachiwala, Hatim, Asmis, Timothy, Sideris, Lucas, Nunez, Leyla, Wani, Rajvi, Cirone Morris, Carlye, Ngan, Elaine, Du, Yinhao, and Inam, Naila
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- 2023
- Full Text
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24. Venous thromboembolism in hospitalized patients: An updated analysis of missed opportunities for thromboprophylaxis at a university-affiliated tertiary care center
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Ma, Kim A, primary, Cohen, Eva, additional, and Kahn, Susan R, additional
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- 2014
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25. Second- and third-line treatment of EGFR wild-type non-small cell lung cancer (NSCLC): A retrospective real-world practice review of the use of tyrosine kinase inhibitors at a single tertiary care center.
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Ma, Kim Anh, primary, Cohen, Victor, additional, Kasymjanova, Goulnar, additional, and Agulnik, Jason Scott, additional
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- 2014
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26. Shifting Paradigm In Physician Practice Patterns In The Application Of Thromboprophylaxis Guidelines: An Updated Analysis Of Venous Thromboembolism Prevention At a University-Affiliated Tertiary Care Center
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Ma, Kim A., primary, Eva, Cohen, additional, and Kahn, Susan R., additional
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- 2013
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27. Governance Reconsidered in Japan: Searching for New Paradigms in the Global Economic Downturn
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Jem Ma, Kim, primary
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- 2010
- Full Text
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28. Femoral Nerve Palsy caused by Iliopsoas Bursitis Associated with Osteonecrosis of the Femoral Head : A Case Report
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Phil Hyun Chung, Soo Ma Kim, Suk Kang, Kyung Jin Seo, Chung Soo Hwang, Jong Pil Kim, and Young Sung Kim
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medicine.medical_specialty ,Femoral head ,medicine.anatomical_structure ,business.industry ,Iliopsoas bursa ,medicine ,Femoral nerve palsy ,Iliopsoas bursitis ,business ,Surgery - Published
- 2009
29. Septic Arthritis of the Hip Caused by Brucella abortus - A Case Report
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Young Sil Choi, Gyoung Yim Ha, Jong Pil Kim, Suk Kang, Chung Soo Hwang, Young Sung Kim, Soo Ma Kim, and Phil Hyun Chung
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musculoskeletal diseases ,Brucella infection ,Zoonotic Infection ,biology ,business.industry ,Brucellosis ,Brucella ,Clinical manifestation ,bacterial infections and mycoses ,medicine.disease ,biology.organism_classification ,Brucella abortus ,Immunology ,Rare case ,medicine ,Septic arthritis ,business - Abstract
Brucellosis is a glbally distributed zoonotic infection of the Brucella genus that can involve multiple tissue and organ. In Korea, Brucellosis is caused mainly by B. abortus. but there is no reported case of pyogenic hip joint infection due to Brucella infection in Korea. The authors report a rare case of B. abortus infection in a 40-year-old male cattle breeder male who presented with septic arthritis of the hip joint as the first clinical manifestation.
- Published
- 2009
30. [Apoptogenic activity of microbes-associants during Epstein-Barr virus infection]
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Ma, Kim, Én, Simovanian, Él, Alutina, and GG Kharseeva
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Male ,Epstein-Barr Virus Infections ,Herpesvirus 4, Human ,Microscopy ,Staphylococcus aureus ,Adolescent ,Streptococcus pyogenes ,Primary Cell Culture ,Mouth Mucosa ,Apoptosis ,Viridans Streptococci ,Mice ,Child, Preschool ,Pseudomonas aeruginosa ,Macrophages, Peritoneal ,Staphylococcus epidermidis ,Animals ,Humans ,Female ,Child - Abstract
Study apoptogenic activity of-microbes-associants during Epstein-Barr virus infection (EBVI) on the model of mice peritoneal macrophages in vitro.Evaluation of apoptosis induced by bacteria isolated from EBVI patients was carried out by characteristic morphological changes of macrophages in smears stained by May-Grunwald with additional staining by Romanowsky-Giemsa.All the EBVI microbes-associants were established to have apoptogenic activity, however, the highest pathogenic potential was noted in Streptococcus pyogenes.The presence of apoptogenic activity in bacterial microflora accompanying EBVI against immune system cells could serve as means of their survival and be the pathogenetic basis for prolonged persistence in the organism.
31. Congenital Absence of the Radius: 2 cases report
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Chang Soo Kang, Young Sik Pyun, Soo Ma Kim, and Chung Gil Lee
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business.industry ,Medicine ,Radius ,Astrophysics ,business - Published
- 1977
32. 58 Long-Term Anorectal Function in Patients with Anal Canal Cancer Treated with Chemoradiotherapy: A Prospective Study of Patient Reported Outcomes.
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Martinez, Constanza, Garant, Aurelie, Pang, Allison, Vasilevsky, Carol-Ann, Ma, Kim, Boutros, Marilyse, Lecavalier, Magali, Morin, Nancy, Bukera, Stephan, and Vuong, Té
- Subjects
- *
ANUS , *ANAL cancer , *CHEMORADIOTHERAPY , *LONGITUDINAL method - Published
- 2024
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33. 127 Prospective Study on Lars Incidence and Severity in Rectal Cancer: Comparing CRT Alone and CRT Followed by Tme.
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Martinez, Constanza, Garant, Aurelie, Pang, Allison, Vasilevsky, Carol-Ann, Ma, Kim, Boutros, Marilyse, Lecavalier, Magali, Morin, Nancy, Bukera, Stephan, and Vuong, Té
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- *
RECTAL cancer , *LONGITUDINAL method - Published
- 2024
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34. Allatotropin (AT) related peptides L-ATRP and D2-ATRP diastereomers activate an endogenous receptor and suppress heart rate in the Pacific abalone Haliotis discus hannai.
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Lee SH, Kim MA, and Sohn YC
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- Animals, HEK293 Cells, Humans, Insect Hormones metabolism, Insect Hormones genetics, Insect Hormones pharmacology, Neuropeptides pharmacology, Neuropeptides genetics, Neuropeptides metabolism, Neuropeptides chemistry, Amino Acid Sequence, Receptors, Neuropeptide metabolism, Receptors, Neuropeptide genetics, Gastropoda metabolism, Gastropoda genetics, Heart Rate drug effects
- Abstract
Allatotropin (AT) has been identified in many insects and plays important roles in the regulation of their intestinal contraction, heart rate, ion transport, and digestive enzyme secretion. However, information on AT-related bioinformatics in other animal phyla is scarce. In this study, we cloned a full-length cDNA encoding the AT-related peptide receptor (ATRPR) of the abalone Haliotis discus hannai (Hdh) and further characterized Hdh-ATRPR with its potential ligands, Hdh-ATRPs. In luciferase reporter and Ca
2+ mobilization assays, Hdh-ATRPs, including a D-type Phe at the second amino acid position, Hdh-D2-ATRP, activated Hdh-ATRPR in a dose-dependent manner, whereas all-L-type Hdh-ATRP was a more potent ligand than Hdh-D2-ATRP. Furthermore, Hdh-ATRPs induced ERK1/2 phosphorylation in Hdh-ATRPR-expressing HEK293 cells, which was dose-dependently abolished by the PKC inhibitor Gö6983. The heart rate decreased significantly within 10 min when Hdh-D2-ATRP was injected into the adduct muscle sinus of abalone (0.2 or 1.0 µg/g body weight), while the abalone injected with a high concentration of Hdh-D2-ATRP (1.5 μg/g body weight) were sublethal within 5 h. Thus, Hdh-ATRP signaling is primarily linked to the Gαq/PKC and is possibly associated with heart rate regulation in abalone., Competing Interests: Declaration of Competing Interest We have nothing to declare., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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35. Impact of three-month treatment with pitavastatin on arterial stiffness in patients with hypercholesterolemia: a prospective observational study.
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Kim HL, Kwon S, Joh HS, Lim WH, Seo JB, Kim SH, Zo JH, and Kim MA
- Abstract
Objective: Although several studies have highlighted the benefits of statins in improving arterial stiffness, there is limited research on whether pitavastatin, a more recently developed statin, has similar effects. This study aimed to investigate the impact of pitavastatin on arterial stiffness in patients with hypercholesterolemia., Methods: This prospective study enrolled 115 patients with hypercholesterolemia (mean age, 59 years; 22% female) who had not previously been treated with statins. Participants underwent lifestyle interventions followed by administration of pitavastatin (2 or 4 mg daily) if target low-density lipoprotein (LDL) cholesterol levels were not achieved. The primary outcome measured was the change in brachial-ankle pulse wave velocity (baPWV) from baseline after three months of treatment., Results: Pitavastatin treatment significantly reduced LDL cholesterol by 41.1% (from 158 ± 28 to 93.0 ± 29.6 mg/dL; P < 0.001). Additionally, systolic blood pressure (SBP) decreased significantly from 130 ± 14 to 126 ± 14 mmHg (P < 0.001), representing a 2.9% reduction, and baPWV decreased significantly from 1522 ± 325 to 1407 ± 289 cm/s (P < 0.001), a 7.6% reduction. There was a significant correlation between changes in SBP and changes in baPWV (r = 0.565; P < 0.001). Even after adjusting for changes in SBP, the reduction in baPWV induced by pitavastatin remained statistically significant (P < 0.001)., Conclusion: A three-month treatment with pitavastatin effectively reduced arterial stiffness in patients with hypercholesterolemia, alongside significant improvements in lipid profiles and blood pressure reductions. These findings support the use of pitavastatin for managing key cardiovascular risk factors., Competing Interests: Competing interests The authors have no relevant financial or non-financial interest to disclose., (Copyright © 2024 Hellenic Society of Cardiology. Publishing services by Elsevier Inc. All rights reserved.)
- Published
- 2024
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36. Feasibility and safety of endoscopic ultrasound-guided diffusing alpha emitter radiation therapy for advanced pancreatic cancer: Preliminary data.
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Miller CS, Lecavalier-Barsoum M, Ma K, Santos Dutra M, Kaitoukov Y, Bahoric B, Tomic N, Dinelle F, Enger S, Batist G, Yang S, Laporta D, Kavan P, Sahai A, Roberge D, and Donath D
- Abstract
Background and study aims Pancreatic cancer is a devastating disease with limited locoregional treatment options. Diffusing alpha-emitter radiation therapy (Alpha DaRT), a novel cancer treatment using alpha-particle interstitial radiotherapy, may help address this challenge. The aim of this study was to evaluate the feasibility and safety of endoscopic ultrasound (EUS)-guided Alpha DaRT for advanced pancreatic cancer. Patients and methods Patients with inoperable locally advanced or metastatic pancreatic adenocarcinoma were treated with EUS-guided Alpha DaRT insertion. The Alpha DaRT sources were delivered into pancreatic tumors using a standard EUS needle with a novel proprietary applicator. Adverse events (AEs) were assessed based on the Common Terminology Criteria for Adverse Events version 5.0. Tumor response was evaluated by imaging 4 to 6 weeks post treatment. Results The first five patients were treated between March and September 2023. The procedure was technically successful in all cases, with Alpha DaRT sources inserted into the target tumor. Estimated gross tumor volume coverage ranged from 8% to 44%. Fourteen AEs were reported among three patients. Four were serious AEs, none of which was associated with the treatment, but rather, with disease progression or medical assistance in dying. Only two AEs (mild) were deemed possibly related to the study device. At the 35-day visit, two patients had progressive disease and three had stable disease, with one of the latter showing partial response 2 months post procedure. Conclusions Preliminary results from this first-in-human trial indicate that EUS-guided Alpha DaRT treatment for unresectable pancreatic cancer is feasible and safe, with no device-associated serious AEs. Further investigation of this promising novel modality is underway., Competing Interests: Conflict of Interest Corey S. Miller is a consultant for Alpha Tau Medical and Boston Scientific. Anand Sahai is a consultant for Boston Scientific. All other authors have no relevant conflicts., (The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).)
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- 2024
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37. The association between arterial stiffness and socioeconomic status: a cross-sectional study using estimated pulse wave velocity.
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Kim HL, Kwon S, Joh HS, Lim WH, Seo JB, Kim SH, Zo JH, and Kim MA
- Abstract
Background: The impact of socioeconomic status (SES) on arterial stiffness remains unclear. This study aimed to explore the association between both personal and household income, as well as education level, and estimated pulse wave velocity (ePWV)., Methods: A total of 13,539 participants (mean age 52.9 ± 16.7 years; 57.1% women) from the Korean National Health and Nutrition Survey database were analyzed. For SES variables, information on personal and household income and education level was collected using standardized questionnaires., Results: The ePWV did not show significant differences across groups categorized by individual income levels (P = 0.183). However, there was a noticeable trend of decreasing ePWV with increasing household income levels (P < 0.001). Additionally, ePWV demonstrated a significant negative correlation with higher education levels, indicating that ePWV decreased in groups with higher educational attainment (P < 0.001). In multiple linear regression analyses, both household income (β = -0.055; P < 0.001) and education level (β = -0.076; P < 0.001) were negatively associated with ePWV, even after adjusting for potential confounders., Conclusions: Lower household income and lower education levels were associated with higher ePWV, providing further evidence of the influence of SES on arterial stiffness., (© 2024. The Author(s).)
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- 2024
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38. Inappropriate Peak Inspiratory Flow Rate in the Patients with Stable Chronic Obstructive Pulmonary Disease in Korea.
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Youn SH, Kim HJ, Park JS, Park SH, Kwon YS, and Kim MA
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Background: While inhalation therapy efficacy hinges on attaining proper peak inspiratory flow rate (PIFR), the prevalence of inappropriate PIFR among patients with chronic obstructive pulmonary disease (COPD) remains unstudied in Korea. This study aimed to assess the prevalence of inappropriate PIFR, its correlation with COPD assessment test (CAT) scores, and factors associated with suboptimal PIFR., Methods: We enrolled 108 patients with COPD who had been using the same inhaler for at least 1 year without exacerbations. PIFR was measured using an inspiratory flow meter (In-Check DIAL G16). Demographic, clinical, pulmonary function, and CAT score data were collected. Inappropriate was defined as PIFR <60 L/min for dry power inhaler (DPI) users, and >90 L/min for aerosol device users., Results: The cohort comprised 87 (80.6%) men, mean age 71.0±8.5 years, with mean post-bronchodilator forced expiratory volume in 1 second of 69.1%±1.8% predicted. Twenty-nine (26.9%) used aerosol devices only, 76 (70.4%) used DPIs only, and three (2.8%) used both. Inappropriate PIFRs were found in 17.2% of aerosol device users, and 42.1% of DPI users. CAT scores were significantly higher in the inappropriate PIFR group than in the appropriate PIFR group (11.2±7.7 vs. 7.5±4.9, p=0.003). In DPI users, female, shorter height, lower body weight and maximal voluntary ventilation (MVV) were associated with inappropriate PIFR., Conclusion: The prevalence of inappropriate PIFR among patients with COPD is 17.2% for aerosol device users, and 42.1% for DPI users. Suboptimal PIFR correlates with female gender, shorter stature, lower weight and MVV in DPI users.
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- 2024
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39. Influence of oipA Phase Variation on Virulence Phenotypes Related to Type IV Secretion System in Helicobacter pylori.
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Lai J, Angulmaduwa S, Kim MA, Kim A, Tissera K, Cho YJ, and Cha JH
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- Virulence genetics, Humans, Virulence Factors genetics, Virulence Factors metabolism, Phenotype, Antigens, Bacterial genetics, Antigens, Bacterial metabolism, Bacterial Proteins genetics, Bacterial Proteins metabolism, Helicobacter pylori genetics, Helicobacter pylori pathogenicity, Helicobacter pylori physiology, Type IV Secretion Systems genetics, Type IV Secretion Systems metabolism, Interleukin-8 metabolism, Interleukin-8 genetics, Bacterial Outer Membrane Proteins genetics, Bacterial Outer Membrane Proteins metabolism, Helicobacter Infections microbiology
- Abstract
Background: oipA, an outer membrane protein of Helicobacter pylori, is linked to IL-8 induction and gastric inflammation, but its role is debated due to inconsistent findings. This study aims to explore the role of oipA phase variation in modulating the virulence traits of H. pylori, a bacterium strongly associated with the development of gastric cancer., Material and Methods: American clinical isolate AH868 strain for naturally occurring phase variations of the oipA gene, and G27 strain for in vitro-induced phase variations were used to elucidate oipA's impact on key virulence phenotypes, including cell elongation, CagA phosphorylation, and IL-8 induction., Results: Using AH868 strain, natural oipA phase variation does not affect cell elongation and IL-8 induction. Interestingly, however, in vitro-induced oipA phase variations in G27 strain uncovered that 9.4% of oipA "Off" transformants exhibit reduced cell elongation while all maintaining consistent IL-8 induction levels. Additionally, complementation of oipA "Off to On" status restores the cell elongation phenotype in 12.5% of transformants, highlighting the importance of oipA in maintaining normal cell morphology. Crucially, these variations in cell elongation are not linked to changes in bacterial adherence capabilities. Furthermore, the study shows a correlation among oipA phase variation, cell elongation, and CagA phosphorylation, suggesting that oipA influences the functionality of the Type IV secretion system. Whole-genome sequencing of selected transformants reveals genetic variations in bab paralogue, cagY gene, and other genomic regions, underscoring the complex genetic interactions that shape H. pylori's virulence., Conclusions: Our research provides new insights into the subtle yet significant role of oipA phase variation in H. pylori pathogenicity, emphasizing the need for further studies to explore the intricate molecular mechanisms involved. This understanding could pave the way for targeted therapeutic strategies to mitigate the impact of H. pylori on human health., (© 2024 The Author(s). Helicobacter published by John Wiley & Sons Ltd.)
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- 2024
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40. Job-Seeking Experiences of Trans Adults in South Korea.
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Sung J, Yi J, Kim MA, and Sanchez G
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- Humans, Male, Female, Republic of Korea, Adult, Middle Aged, Career Choice, Gender Identity, Qualitative Research, Job Application, Young Adult, Employment, Transgender Persons psychology, Social Stigma
- Abstract
Being trans is stigmatized and can make it difficult to fit into the job market in South Korean society. This study explored trans individuals' job-seeking experience and the impact of gender identity on their career choices and development using a qualitative approach. In-depth interviews were conducted with 20 trans adults with job-seeking experiences who were recruited through purposive and snowball sampling in South Korea. Ten subthemes were identified in three overarching themes: (a) limiting myself in job search; (b) challenges in the job application and interview process; and (c) having a desire to build a meaningful career. Participants limited their choices for employment in favor of gender-neutral jobs or trans-inclusive work environments. In the job-seeking process, they faced challenges due to society's rigid binary gender roles and the negative stereotypes about trans identities. Despite stress and identity-related conflict, participants expressed a desire to overcome challenges, build a meaningful career, and flourish at work without compromising their gender identity. This study highlights the experiences of trans individuals in their job-seeking journey. Psychosocial interventions and career support services could help trans individuals in the job-seeking process by identifying their unique challenges to employment and providing assistance to cope with stigma and oppression.
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- 2024
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41. Transcriptome analysis of East Asian common octopus, Octopus sinensis, paralarvae.
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Kim KT, Kim MA, Kim WJ, Jung MM, Kim DH, and Sohn YC
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- Animals, Gene Expression Regulation, Developmental, Gene Expression Profiling methods, East Asian People, Octopodiformes genetics, Octopodiformes growth & development, Transcriptome genetics
- Abstract
Background: The genes involved in cephalopod development and their association with hatching and survival during early life stages have been extensively studied. However, few studies have investigated the paralarvae transcriptome of the East Asian common octopus (Octopus sinen sis)., Objective: This study aimed to identify the genes related to embryonic development and hatching in O. sinensis using RNA sequencing (RNA-seq) and verify the genes most relevant to different embryonic stages., Methods: RNA samples from hatched and 25 days post-hatching (dph) O. sinensis paralarvae were used to construct cDNA libraries. Clean reads from individual samples were aligned to the reference O. sinensis database to identify the differentially expressed genes (DEGs) between the 0- and 25-dph paralarvae libraries. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to supplement the RNA-seq data for embryogenic developmental stages., Results: A total of 12,597 transcripts were annotated and 5,468 DEGs were identified between the 0- and 25-dph O. sinensis paralarvae, including 2,715 upregulated and 2,753 downregulated transcripts in the 25-dph paralarvae. Several key DEGs were related to transmembrane transport, lipid biosynthesis, monooxygenase activity, lipid transport, neuropeptide signaling, transcription regulation, and protein-cysteine S-palmitoyltransferase activity during the post-hatching development of O. sinensis paralarvae. RT-qPCR analysis further revealed that SLC5A3A, ABCC12, and NPC1 transcripts in 20 and/or 30 days post-fertilization (dpf) embryos were significantly higher (p < 0.05) than those in 10-dpf embryos., Conclusion: Transcriptome profiles provide molecular targets to understand the embryonic development, hatching, and survival of O. sinensis paralarvae, and enhance octopus production., (© 2024. The Author(s) under exclusive licence to The Genetics Society of Korea.)
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- 2024
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42. Associations of personal urinary volatile organic compounds and lung function in children.
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Park D, Ha EK, Jung H, Kim JH, Shin J, Kim MA, Shin YH, Jee HM, and Han MY
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- Humans, Child, Male, Female, Vital Capacity, Spirometry, Forced Expiratory Volume, Skin Tests, Sorbic Acid analogs & derivatives, Sorbic Acid analysis, Environmental Exposure adverse effects, Environmental Exposure analysis, Respiratory Function Tests, Xylenes urine, Benzene analysis, Airway Resistance, Benzene Derivatives urine, Air Pollutants urine, Air Pollutants analysis, Air Pollutants adverse effects, Asthma urine, Asthma physiopathology, Hippurates urine, Oscillometry, Lung, Volatile Organic Compounds urine
- Abstract
Background: We investigated the correlation between urine VOC metabolites and airway function in children exposed to anthropogenic volatile organic compounds (VOCs), notable pollutants impacting respiratory health., Methods: Out of 157 respondents, 141 completed skin prick tests, spirometry, IOS, and provided urine samples following the International Study of Asthma and Allergies in Childhood (ISAAC)-related questions. Allergic sensitization was assessed through skin prick tests, and airway functions were evaluated using spirometry and impulse oscillometry (IOS). Forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) was recorded and FEV1/FVC ratio was calculated. Airway mechanics parameters including respiratory resistance at 5 Hz (Rrs5) mean respiratory resistance between 5 Hz and 20 Hz (Rrs5-20), were also recorded. Urine concentrations of metabolites of benzene, ethylbenzene, toluene, xylene, styrene, formaldehyde, carbon-disulfide were analyzed by gas chromatography/tandem mass spectroscopy., Results: The median age at study participation was 7.1 (SD 0.3) years. Muconic acid (benzene metabolites) and o-methyl-hippuric acid (xylene metabolites) above medians were associated with a significant increase in Rrs5 (muconic acid: aβ = 0.150, p = .002; o-methyl-hippuric acid: aβ = 0.143, p = .023) and a decrease in FEV1/FVC (o-methyl-hippuric acid: aβ = 0.054, p = .028) compared to those below median. No associations were observed for Rrs5-20 and FEV1 between the groups categorized as above and below the median (all parameter p values > .05)., Conclusions: Elevated levels of benzene and xylene metabolites were associated with a significant increase in Rrs5 and a decrease in FEV1/FVC, related to increased resistance and restrictive lung conditions compared to individuals with concentrations below the median.
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- 2024
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43. Atypical 18 F-FDG PET-CT Findings in a Rare Case of Primary Hepatic Leiomyosarcoma.
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Cheon M, Yi H, Ha JY, and Kim MA
- Abstract
The primary hepatic leiomyosarcoma is a rare malignant tumor arising from the smooth muscle cells in the hepatic vessels, bile ducts, and ligamentum teres. It is considered a subtype of hepatic sarcomas. We report awkward
18 F-FDG PET-CT findings of a primary hepatic leiomyosarcoma masquerading as a benign hepatic tumor, which were confirmed by histopathological and immunohistochemical examinations in a 78-year-old woman.- Published
- 2024
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44. Wetting Transparency of Single-Layer Graphene on Liquid Substrates.
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Yang F, Thompson AG, McQuain AD, Gundurao D, Stando G, Kim MA, Liu H, and Li L
- Abstract
Graphene's wetting transparency offers promising avenues for creating multifunctional devices by allowing real-time wettability control on liquid substrates via the flow of different liquids beneath graphene. Despite its potential, direct measurement of floating graphene's wettability remains a challenge, hindering the exploration of these applications. The current study develops an experimental methodology to assess the wetting transparency of single-layer graphene (SLG) on liquid substrates. By employing contact angle measurements and Neumann's Triangle model, the challenge of evaluating the wettability of floating free-suspended single-layer graphene is addressed. The research reveals that for successful contact angle measurements, the testing and substrate liquids must be immiscible. Using diiodomethane as the testing liquid and ammonium persulfate solution as liquid substrate, the study demonstrates the near-complete wetting transparency of graphene. Furthermore, it successfully showcases the feasibility of real-time wettability control using graphene on liquid substrates. This work not only advances the understanding of graphene's interaction with liquid interfaces but also suggests a new avenue for the development of multifunctional materials and devices by exploiting the unique wetting transparency of graphene., (© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)
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- 2024
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45. Characterization of myoinhibitory peptide signaling system and its implication in larval metamorphosis and spawning behavior in Pacific abalone.
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Park S, Kim MA, and Sohn YC
- Subjects
- Animals, Peptides, Reproduction physiology, Metamorphosis, Biological physiology, Larva growth & development, Larva metabolism, Signal Transduction physiology, Gastropoda growth & development, Gastropoda metabolism, Gastropoda physiology
- Abstract
Myoinhibitory peptides (MIPs) affect various physiological functions, including juvenile hormone signaling, muscle contraction, larval development, and reproduction in invertebrates. Although MIPs are ligands for MIP and/or sex peptide receptors (MIP/SPRs) in diverse arthropods and model organisms belonging to Lophotrochozoa, the MIP signaling system has not yet been fully investigated in mollusks. In this study, we identified the MIP signaling system in the Pacific abalone Haliotis discus hannai (Hdh). Similar to the invertebrate MIPs, a total of eight paracopies of MIPs (named Hdh-MIP1 to Hdh-MIP8), harboring a WX
5-7 Wamide motif, except for Hdh-MIP2, were found in the Hdh-MIP precursor. Furthermore, we characterized a functional Hdh-MIPR, which responded to the Hdh-MIPs, except for Hdh-MIP2, possibly linked with the PKC/Ca2+ and PKA/cAMP signaling pathways. Hdh-MIPs delayed larval metamorphosis but increased the spawning behavior. These results suggest that the Hdh-MIP signaling system provides insights into the unique function of MIP in invertebrates., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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46. Active Learning of Ligands That Enhance Perovskite Nanocrystal Luminescence.
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Kim MA, Ai Q, Norquist AJ, Schrier J, and Chan EM
- Abstract
Ligands play a critical role in the optical properties and chemical stability of colloidal nanocrystals (NCs), but identifying ligands that can enhance NC properties is daunting, given the high dimensionality of chemical space. Here, we use machine learning (ML) and robotic screening to accelerate the discovery of ligands that enhance the photoluminescence quantum yield (PLQY) of CsPbBr
3 perovskite NCs. We developed a ML model designed to predict the relative PL enhancement of perovskite NCs when coordinated with a ligand selected from a pool of 29,904 candidate molecules. Ligand candidates were selected using an active learning (AL) approach that accounted for uncertainty quantified by twin regressors. After eight experimental iterations of batch AL (corresponding to 21 initial and 72 model-recommended ligands), the uncertainty of the model decreased, demonstrating an increased confidence in the model predictions. Feature importance and counterfactual analyses of model predictions illustrate the potential use of ligand field strength in designing PL-enhancing ligands. Our versatile AL framework can be readily adapted to screen the effect of ligands on a wide range of colloidal nanomaterials.- Published
- 2024
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47. Differences in coronary angiographic findings and outcomes between men and postmenopausal women with stable chest pain.
- Author
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Kang IS, Shin MS, Lee HA, Kim MN, Kim HL, Yoon HJ, Park SM, Hong KS, and Kim MA
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- Humans, Male, Female, Middle Aged, Aged, Sex Factors, Prospective Studies, Risk Factors, Coronary Stenosis diagnostic imaging, Coronary Stenosis epidemiology, Myocardial Revascularization statistics & numerical data, Myocardial Revascularization methods, Prevalence, Angina, Stable epidemiology, Angina, Stable diagnostic imaging, Predictive Value of Tests, Age Factors, Republic of Korea epidemiology, Coronary Angiography methods, Postmenopause, Registries, Coronary Artery Disease diagnostic imaging, Coronary Artery Disease epidemiology
- Abstract
Background: Despite the significant increase in cardiovascular events in women after menopause, studies comparing postmenopausal women and men are scarce., Methods: We analyzed data from a nationwide, multicenter, prospective registry and enrolled 2412 patients with stable chest pain who underwent elective coronary angiography. Binary coronary artery disease (b-CAD) was defined as the ≥50% stenosis of epicardial coronary arteries, including the left main coronary artery., Results: Compared with the men, postmenopausal women were older (66.6 ± 8.5 vs. 59.5 ± 11.4 years) and had higher high-density lipoprotein cholesterol levels (49.0 ± 12.8 vs. 43.6 ± 11.6 mg/dl, P < 0.01). The prevalence of diabetes did not differ significantly ( P = 0.40), and smoking was more common in men than in postmenopausal women ( P ≤ 0.01). At enrollment, b-CAD and revascularization were more common in men than in postmenopausal women (50.3% vs. 41.0% and 14.4% vs. 9.7%, respectively; both P < 0.01). However, multivariate analyses revealed that revascularization [odds ratio (OR): 0.72; 95% confidence interval (CI): 0.49-1.08] was not significantly related to sex and a similar result was found in age propensity-matched population (OR: 0.80; 95% CI: 0.52-1.24). During the follow-up period, the secondary composite cardiovascular outcomes were lower in postmenopausal women than in men (OR: 0.55; 95% CI: 0.31-0.98), also consistent with the result using the age propensity-mated population (OR: 0.33; 95% CI: 0.13-0.85)., Conclusion: Postmenopausal women experienced coronary revascularization comparable to those in men at enrollment, despite the average age of postmenopausal women was 7 years older than that of men.Postmenopausal women exhibit better clinical outcomes than those of men if optimal treatment is provided., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2024
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48. Cost Difference in Performing Total Knee Arthroplasty at Ambulatory Surgical Centers Compared With Hospital-Based Outpatient Departments: Observational Study.
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Kim T, Nin D, Chen YW, Chang DC, Talmo CT, Hollenbeck BL, Niu R, Mattingly DA, and Smith EL
- Abstract
Background: As total knee arthroplasty (TKA) further transitions toward an outpatient procedure, it becomes important to identify the resource utilization after TKAs at different outpatient facilities. The objective of this study was to determine the 90-day cost of patients who underwent TKAs at an ambulatory surgical center (ASC) or a hospital outpatient department (HOPD)., Methods: An observational cohort study was conducted using the Marketscan database with patients who had a TKA at an ASC or HOPD between January 1st, 2019, and October 2nd, 2021. The primary outcome was cost in a 90-day period (including the day of surgery), with inpatient admissions and ED visits as secondary outcomes. Multivariable regression analyses were conducted, adjusting for patient characteristics., Results: The study population consisted of 47,261 patients with 7,874 ASC patients and 39,387 HOPD patients. 90-day costs for ASC patients were lower compared with HOPD patients ($35,634 ± 19,030 vs. $38,096 ± 24,389, P < 0.001). 90-day inpatient admission rates were lower for ASC than HOPD patients (2.5% vs. 4.8%, P < 0.001). 90-day ED visits for ASC patients were lesser compared with HOPD patients (8.9% vs. 12.7%, P < 0.001)., Conclusion: Patients with TKAs at an ASC had an overall lower cost, inpatient admissions, and ED visits over a 90-day period compared with HOPD patients. Future consideration for which outpatient facilities patients have their TKA at is necessary as TKAs shift toward bundle payments and outpatient procedures., (Copyright © 2024 by the American Academy of Orthopaedic Surgeons.)
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- 2024
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49. Multiple-Junction-Based Traffic-Aware Routing Protocol Using ACO Algorithm in Urban Vehicular Networks.
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Lee SW, Heo KS, Kim MA, Kim DK, and Choi H
- Abstract
The burgeoning interest in intelligent transportation systems (ITS) and the widespread adoption of in-vehicle amenities like infotainment have spurred a heightened fascination with vehicular ad-hoc networks (VANETs). Multi-hop routing protocols are pivotal in actualizing these in-vehicle services, such as infotainment, wirelessly. This study presents a novel protocol called multiple junction-based traffic-aware routing (MJTAR) for VANET vehicles operating in urban environments. MJTAR represents an advancement over the improved greedy traffic-aware routing (GyTAR) protocol. MJTAR introduces a distributed mechanism capable of recognizing vehicle traffic and computing curve metric distances based on two-hop junctions. Additionally, it employs a technique to dynamically select the most optimal multiple junctions between source and destination using the ant colony optimization (ACO) algorithm. We implemented the proposed protocol using the network simulator 3 (NS-3) and simulation of urban mobility (SUMO) simulators and conducted performance evaluations by comparing it with GSR and GyTAR. Our evaluation demonstrates that the proposed protocol surpasses GSR and GyTAR by over 20% in terms of packet delivery ratio, with the end-to-end delay reduced to less than 1.3 s on average.
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- 2024
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50. Intravascular imaging-guided percutaneous coronary intervention in patients with acute myocardial infarction and cardiogenic shock.
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Joh HS, Lee SH, Jo J, Kim HK, Lim WH, Kim HL, Seo JB, Chung WY, Kim SH, Zo JH, Kim MA, Kim MC, Kim JH, Hong YJ, Ahn YK, Jeong MH, Hur SH, Kim DI, Chang K, Park HS, Bae JW, Jeong JO, Park YH, Yun KH, Yoon CH, Kim Y, Hwang JY, Kim HS, Hong D, Kwon W, Choi KH, Park TK, Yang JH, Song YB, Hahn JY, Choi SH, Gwon HC, and Lee JM
- Abstract
Introduction and Objectives: There are no clinical data on the efficacy of intravascular imaging-guided percutaneous coronary intervention (PCI) compared with angiography-guided PCI in patients with acute myocardial infarction (AMI) and cardiogenic shock. The current study sought to evaluate the impact of intravascular imaging-guided PCI in patients with AMI and cardiogenic shock., Methods: Among a total of 28 732 patients from the nationwide pooled registry of KAMIR-NIH (November, 2011 to December, 2015) and KAMIR-V (January, 2016 to June, 2020), we selected a total of 1833 patients (6.4%) with AMI and cardiogenic shock who underwent PCI of the culprit vessel. The primary endpoint was major adverse cardiovascular events (MACE) at 1 year, a composite of cardiac death, myocardial infarction, repeat revascularization, and definite or probable stent thrombosis., Results: Among the study population, 375 patients (20.5%) underwent intravascular imaging-guided PCI and 1458 patients (79.5%) underwent angiography-guided PCI. Intravascular imaging-guided PCI was associated with a significantly lower risk of 1-year MACE than angiography-guided PCI (19.5% vs 28.2%; HR, 0.59; 95%CI, 0.45-0.77; P<.001), mainly driven by a lower risk of cardiac death (13.7% vs 24.0%; adjusted HR, 0.53; 95%CI, 0.39-0.72; P<.001). These results were consistent in propensity score matching (HR, 0.68; 95%CI, 0.46-0.99), inverse probability weighting (HR, 0.61; 95%CI, 0.45-0.83), and Bayesian analysis (Odds ratio, 0.66, 95% credible interval, 0.49-0.88)., Conclusions: In AMI patients with cardiogenic shock, intravascular imaging-guided PCI was associated with a lower risk of MACE at 1-year than angiography-guided PCI, mainly driven by the lower risk of cardiac death., (Copyright © 2024 Sociedad Española de Cardiología. Published by Elsevier España, S.L.U. All rights reserved.)
- Published
- 2024
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