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Clinical Implication of Dacryoendoscopy in the Patients with Tearing: A Systematic Review
Yuri Kim(Yuri Kim),Jeong Yoon Park(Jeong Yoon Park),Helen Lew(Helen Lew) 대한안과학회 2023 Korean Journal of Ophthalmology Vol.37 No.3
Purpose: A systematic review of the literature on diagnostic and therapeutic indications, techniques, and complications of dacryoendoscopy (DE) was performed. Methods: The authors performed a PubMed search of articles published in English on DE. Data were collected and classified according to the categories of the disease. The clinical outcomes and limitations were particularly analyzed. Results: The lacrimal drainage system from the canaliculus to the inferior meatus could be examined based on the specific anatomical features by DE. The canalicular mucosa is smooth and brightly colored, the lacrimal sac shows covering mucosa with good vascularization and the nasolacrimal duct is lined with bright tubular mucosal folds. DE allows direct visualization of the detailed internal condition of the lacrimal disorders, to directly diagnose the site of obstruction with accuracy and address the causes and recanalize the lacrimal drainage system using assisted micro lacrimal surgical instruments in the tearing patients. Conclusions: Better visualization of the lacrimal canal with DE improves the understanding of physiology and precise identification of the obstructing lesions, both of which are the key to a comprehensive management for the tearing patients.
Park, Min-Oh,Lee, Byung-Hoo,Lim, Eunjin,Lim, Ji Ye,Kim, Yuri,Park, Cheon-Seok,Lee, Hyeon Gyu,Kang, Hee-Kwon,Yoo, Sang-Ho American Chemical Society 2016 Journal of agricultural and food chemistry Vol.64 No.23
<P>Turanose is a sucrose isomer naturally existing in honey and a promising functional sweetener due to its low glycemic response. In this study, the extrinsic fructose effect on turanose productivity was examined in Neisseria amylosucrase reaction. Turanose was produced, by increasing the amount of extrinsic fructose as a reaction modulator, with high concentration of sucrose substrate, which resulted in 73.7% of production yield. In physiological functionality test, lipid accumulation in 3T3-L1 preadipocytes in the presence of high amounts of pure glucose was attenuated by turanose substitution in a dose-dependent manner. Turanose treatments at concentrations representing 50%, 75%, and 100% of total glucose concentration in cell media significantly reduced lipid accumulation by 18%, 35%, and 72%, respectively, as compared to controls. This result suggested that turanose had a positive role in controlling adipogenesis, and enzymatic process of turanose production has a potential to develop a functional food ingredient for controlling obesity and related chronic diseases.</P>
( Yuri Park ),( Tae-hee Park ),( Rami Lee ),( Jong-sung Baek ),( Kwang-hwan Jhee ),( Daesuk Bang ) 한국고무학회 2017 엘라스토머 및 콤포지트 Vol.52 No.3
We studied the antibacterial effect and mechanical properties of PLA composites with in organic porous zeolite-type bacteriocides. The specimens were prepared by an intermeshing co-rotating twin screw extruder using different contents of inorganic bacteriocide. The degree of dispersion of the in organic bacteriocide in the PLA composite was confirmed by FE-SEM. The contents of Ag and Zn in the composite were also investigated by energy dispersive spectroscopy at different concentrations of the inorganic bacteriocide. The antibacterial effects were analyzed by turbidity analysis, shaking culture, and drop-test. The mechanical properties, such as the tensile and flexural properties, impact strength, and physical properties, were also investigated. As the content of inorganic bacteriocide increased, the antibacterial activity was increased, especially against Staphylococcus aureus. Mechanical properties, namely, tensile strength, elongation, flexural strength, and impact strength, tended to decrease with an increase in inorganic bacteriocide content, but the tensile and flexural modulus increased.
Urbanization of Scrub Typhus Disease in South Korea
Park, Sang-Won,Ha, Na-Young,Ryu, Boyeong,Bang, Ji Hwan,Song, Hoyeon,Kim, Yuri,Kim, Gwanghun,Oh, Myoung-don,Cho, Nam-Hyuk,Lee, Jong-koo Public Library of Science 2015 PLoS neglected tropical diseases Vol.9 No.5
<▼1><P><B>Background</B></P><P>Scrub typhus is an endemic disease in Asia. It has been a rural disease, but indigenous urban cases have been observed in Seoul, South Korea. Urban scrub typhus may have a significant impact because of the large population.</P><P><B>Methods</B></P><P>Indigenous urban scrub typhus was epidemiologically identified in Seoul, the largest metropolitan city in South Korea, using national notifiable disease data from 2010 to 2013. For detailed analysis of clinical features, patients from one hospital that reported the majority of cases were selected and compared to a historic control group. Chigger mites were prospectively collected in the city using a direct chigger mite-collecting trap, and identified using both phenotypic and 18S rDNA sequencing analyses. Their infection with <I>Orientia tsutsugamushi</I> was confirmed by sequencing the 56-kDa antigen gene.</P><P><B>Results</B></P><P>Eighty-eight cases of urban scrub typhus were determined in Seoul. The possible sites of infection were mountainous areas (56.8%), city parks (20.5%), the vicinity of one’s own residence (17.0%), and riversides (5.7%). Eighty-seven chigger mites were collected in Gwanak mountain, one of the suspected infection sites in southern Seoul, and seventy-six (87.4%) of them were identified as <I>Helenicula miyagawai</I> and eight (9.2%) as <I>Leptotrombidium scutellare</I>. Pooled DNA extracted from <I>H</I>. <I>miyagawai</I> mites yielded <I>O</I>. <I>tsutsugamushi</I> Boryong strain. Twenty-six patients from one hospital showed low APACHE II score (3.4 ± 2.7), low complication rate (3.8%), and no hypokalemia.</P><P><B>Conclusions</B></P><P>We identified the presence of indigenous urban scrub typhus in Seoul, and a subgroup of them had mild clinical features. The chigger mite <I>H</I>. <I>miyagawai</I> infected with <I>O</I>. <I>tsutsugamushi</I> within the city was found. In endemic area, urban scrub typhus needs to be considered as one of the differential febrile diseases and a target for prevention.</P></▼1><▼2><P><B>Author Summary</B></P><P>Scrub typhus is one of the high burdened infectious diseases in endemic rural areas. Our study showed that the disease could be endemic in urban areas. Indigenous urban scrub typhus may also have significant impact in terms of a disease burden and differential diagnosis. A low rate of characteristic eschar and skin rash may make the clinical suspicion more troublesome. Scrub typhus is the 3<SUP>rd</SUP> most frequent notifiable infectious disease in South Korea. Seoul is a densely populated capital city located in northwestern South Korea. We epidemiologically identified indigenous urban cases. A subgroup of them showed mild clinical characteristics. Direct mite collection from a suspected infection site, Mt. Gwanak in Seoul, showed that <I>Helenicula miyagawai</I> (87.4%) and <I>Leptotrombidium scutellare</I> (9.2%) were the dominant species. In addition, <I>O</I>. <I>tsutsugamushi</I>-specific gene, <I>tsa56</I>, was identified in a fraction of the collected <I>H</I>. <I>miyagawai</I>. The 18S rDNA sequencing of the chigger mites was complementarily helpful for the differentiation of species. Our data are from one region, but urban scrub typhus is likely a scenario in endemic areas. Urban areas should be included as possible locations for scrub typhus.</P></▼2>