scholarly journals Delayed sclerosing granulomatous reaction to dermal filler injection of poly‐hydroxyethyl‐methacrylate suspended in hyaluronic acid: Histochemical and confocal laser scanning microscopical analysis

2019 ◽  
Vol 7 (11) ◽  
pp. 2215-2219
Author(s):  
Saverio Capodiferro ◽  
Pasquale Sportelli ◽  
Luisa Limongelli ◽  
Fabio Dell’Olio ◽  
Angela Tempesta ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Laser Scanning ◽  
Confocal Laser Scanning ◽  
Dermal Filler ◽  
Confocal Laser ◽  
Hydroxyethyl Methacrylate ◽  
Granulomatous Reaction ◽  
Filler Injection ◽  
Microscopical Analysis ◽  
Dermal Filler Injection

scholarly journals Evaluation of the Bactericidal Activity of a Hyaluronic Acid-Vehicled Clarithromycin Antibiotic Mixture by Confocal Laser Scanning Microscopy

2020 ◽  
Vol 10 (8) ◽  
pp. 761
Author(s):  
Narcisa Mandras ◽  
Mario Alovisi ◽  
Janira Roana ◽  
Paola Crosasso ◽  
Anna Luganini ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Confocal Laser Scanning Microscopy ◽  
Laser Scanning ◽  
Antibacterial Effect ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Scanning Microscopy ◽  
Confocal Laser ◽  
Dentinal Tubules ◽  
The Mean

Confocal laser scanning microscopy (CLSM) was used to evaluate the antibacterial effect and depth of action of a novel clarithromycin-containing triple antibiotic mixture, which was proposed for root canal disinfection in dental pulp regeneration. A previous study reported that this mixture had no tooth discoloration effects in vitro. After infection with Enterococcus faecalis for 3 weeks, the dentinal tubules in the cylindrical root specimens were exposed to different antibiotic mixtures: ciprofloxacin, metronidazole and minocycline (3-MIX); ciprofloxacin, metronidazole and clarithromycin (3-MIXC) and ciprofloxacin and metronidazole (2-MIX). Each antibiotic formulation was mixed with macrogol (MG) or hyaluronic acid (HA) vehicles. CLSM and viability staining were used to quantitatively analyze the mean depth of the antibacterial effect and the proportions of dead and live bacteria inside the dentinal tubules. The 3-MIX and 3-MIXC demonstrated a similar depth of action. The mean proportion of dead bacteria was similar in the 3-MIX and 3-MIXC groups, and both were statistically higher than that of 2-MIX (p = 0.014). Each antibiotic mixture showed a higher bactericidal efficacy if conveyed with HA, compared to MG (3-MIX, p = 0.019; 3-MIXC, p = 0.013 and 2-MIX, p = 0.0125). The depth of action and the antibacterial efficacy of 3-MIXC seemed comparable with 3-MIX.

scholarly journals A case of cellulitis-like foreign body reaction after hyaluronic acid dermal filler injection

2018 ◽  
Vol 36 (1) ◽  
pp. 46-49 ◽  
Author(s):  
Yo Sup Shin ◽  
Won Joo Kwon ◽  
Eun Byul Cho ◽  
Eun Joo Park ◽  
Kwang Ho Kim ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Foreign Body ◽  
Foreign Body Reaction ◽  
Dermal Filler ◽  
Filler Injection ◽  
Dermal Filler Injection

scholarly journals Injeksi asam hialuronat di lapisan dermis menghambat peningkatan ekspresi MMP-1 tikus yang dipajan sinar ultraviolet-B (UVB)

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Oktavian Tamon ◽  
A A G P Wiraguna ◽  
Wimpie Pangkahila
Keyword(s):  
Hyaluronic Acid ◽  
Rattus Norvegicus ◽  
Intradermal Injection ◽  
Ultraviolet B ◽  
Dermal Filler ◽  
Control Group ◽  
Control Group Design ◽  
Filler Injection ◽  
Post Test ◽  
Dermal Filler Injection

Abstract: Ultraviolet B (UVB) is a source of free radicals that accelerate aging process, especially in the skin, through the increase of MMP-1. Hyaluronic acid contained in the dermal filler injection may provide a protective effect against skin exposure to UV rays. This study was aimed to prove that intradermal injection of hyaluronic acid could prevent the increase of MMP-1 in UVB-induced rats (Rattus norvegicus). This was a true experimental study with the post test only control group design. Subjects were 30 male Wistar rats (Rattus norvegicus), aged 2,5-3 months, weighing 160-180 g, and divided into 3 groups. The control group (P0) was exposed to UV-B only; the treatment group 1 (P1) was exposed to UVB and treated with placebo (aquadest intradermal injection); and the treatment group 2 (P2) was exposed to UVB and treated with hyaluronic acid intradermal injection. After 15 days of treatment, all rats were anesthetized and their skin tissues were prepared for examination of MMP1 levels. The statistic analysis showed that the average level of MMP1 in the P0 group was 24.54±4.39%; in the P1 group was 21.35±2.48% (P < 0.01). The average level of MMP-1 in P2 group was 15.40±3.87%, and was statistically lower than P0 group (P < 0.01) and P1 group (P < 0.01). Conclusion: Injection of hyaluronic acid in the dermal layer could prevent the increase of MMP-1 in UVB-induced rats (Rattus norvegicus).Keywords: hyaluronic acid, MMP-1, UVBAbstrak: Ultraviolet B (UVB) merupakan salah satu sumber radikal bebas yang dapat mempercepat proses penuaan, khususnya penuaan pada kulit melalui peningkatan MMP-1. Asam hialuronat yang terkandung dalam dermal filler injection dapat memberi efek perlindungan kulit terhadap pajanan sinar ultraviolet. Tujuan penelitian ini untuk membuktikan bahwa pemberian asam hialuronat intradermal menghambat peningkatan ekspresi MMP-1 tikus yang dipapar sinar UVB. Jenis penelitian ialah eksperimental murni menggunakan post test only control group design. Subjek penelitian ialah 30 ekor tikus putih (Rattus norvegicus), jantan, galur Wistar, berumur 2,5-3 bulan, dengan berat badan 160-180 gram yang terbagi menjadi 3 kelompok masing-masing berjumlah 10 ekor tikus. Kelompok kontrol (P0) hanya diberi pajanan UVB; kelompok plasebo (P1) diberikan injeksi aquabidest intradermal serta pajanan UVB; dan kelompok perlakuan (P2) diberikan injeksi asam hialuronat intradermal dan pajanan UVB. Setelah 15 hari perlakuan, seluruh tikus dianestesi kemudian jaringan kulitnya diambil untuk pemeriksaan ekspresi MMP-1 dermis. Hasil analisis statistik menunjukkan bahwa rerata ekspresi MMP-1 pada kelompok P0 ialah 24,54±4,39% dan pada kelompok P1 21,35±2,48% (P > 0,05). Pada kelompok P2, rerata ekspresi MMP-1 ialah 15,40±3,87%, yang secara statistik lebih rendah dibandingkan dengan kelompok P0 (P < 0,01) dan kelompok P1 (P < 0,01). Simpulan: Pemberian asam hialuronat intradermal menghambat peningkatan ekspresi MMP-1 tikus yang dipapar sinar UVB.Kata kunci: asam hialuronat, MMP-1, UVB

scholarly journals Evaluation of the Bactericidal Activity of a Hyaluronic Acid-Vehicled Clarithromycin Antibiotic Mixture by Confocal Laser Scanning Microscopy

2020 ◽  
Vol 10 (3) ◽  
pp. 761
Author(s):  
Narcisa Mandras ◽  
Mario Alovisi ◽  
Janira Roana ◽  
Paola Crosasso ◽  
Anna Luganini ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Confocal Laser Scanning Microscopy ◽  
Laser Scanning ◽  
Antibacterial Effect ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Scanning Microscopy ◽  
Confocal Laser ◽  
Dentinal Tubules ◽  
The Mean

Confocal laser scanning microscopy (CLSM) was used to evaluate the antibacterial effect and depth of action of a novel clarithromycin-containing triple antibiotic mixture, which was proposed for root canal disinfection in dental pulp regeneration. A previous study reported that this mixture had no tooth discoloration effects in vitro. After infection with Enterococcus faecalis for 3 weeks, the dentinal tubules in the cylindrical root specimens were exposed to different antibiotic mixtures: ciprofloxacin, metronidazole and minocycline (3-MIX); ciprofloxacin, metronidazole and clarithromycin (3-MIXC) and ciprofloxacin and metronidazole (2-MIX). Each antibiotic formulation was mixed with macrogol (MG) or hyaluronic acid (HA) vehicles. CLSM and viability staining were used to quantitatively analyze the mean depth of the antibacterial effect and the proportions of dead and live bacteria inside the dentinal tubules. The 3-MIX and 3-MIXC demonstrated a similar depth of action. The mean proportion of dead bacteria was similar in the 3-MIX and 3-MIXC groups, and both were statistically higher than that of 2-MIX (p = 0.014). Each antibiotic mixture showed a higher bactericidal efficacy if conveyed with HA, compared to MG (3-MIX, p = 0.019; 3-MIXC, p = 0.013 and 2-MIX, p = 0.0125). The depth of action and the antibacterial efficacy of 3-MIXC seemed comparable with 3-MIX.

3-D imaging of cells using a confocal laser scanning microscope and digital image processing

1988 ◽  
Vol 46 ◽  
pp. 96-97
Author(s):  
Thomas M. Jovin ◽  
Michel Robert-Nicoud ◽  
Donna J. Arndt-Jovin ◽  
Thorsten Schormann
Keyword(s):  
Laser Scanning ◽  
Confocal Laser Scanning Microscope ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Confocal Laser ◽  
Scanning Microscope ◽  
Laser Scanning Microscope ◽  
Biochemical Processes ◽  
Adjacent Structures

Light microscopic techniques for visualizing biomolecules and biochemical processes in situ have become indispensable in studies concerning the structural organization of supramolecular assemblies in cells and of processes during the cell cycle, transformation, differentiation, and development. Confocal laser scanning microscopy offers a number of advantages for the in situ localization and quantitation of fluorescence labeled targets and probes: (i) rejection of interfering signals emanating from out-of-focus and adjacent structures, allowing the “optical sectioning” of the specimen and 3-D reconstruction without time consuming deconvolution; (ii) increased spatial resolution; (iii) electronic control of contrast and magnification; (iv) simultanous imaging of the specimen by optical phenomena based on incident, scattered, emitted, and transmitted light; and (v) simultanous use of different fluorescent probes and types of detectors.We currently use a confocal laser scanning microscope CLSM (Zeiss, Oberkochen) equipped with 3-laser excitation (u.v - visible) and confocal optics in the fluorescence mode, as well as a computer-controlled X-Y-Z scanning stage with 0.1 μ resolution.

Use of confocal laser scanning microscopy and a computer model to understand ink cavitation and filamentation

TAPPI Journal ◽  
2010 ◽  
Vol 9 (10) ◽  
pp. 7-15
Author(s):  
HANNA KOIVULA ◽  
DOUGLAS BOUSFIELD ◽  
MARTTI TOIVAKKA
Keyword(s):  
Laser Scanning ◽  
Confocal Laser Scanning Microscope ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Confocal Laser ◽  
Print Quality ◽  
Length Scale ◽  
Offset Printing ◽  
Significant Difference ◽  
Printing Speed

In the offset printing process, ink film splitting has an important impact on formation of ink filaments. The filament size and its distribution influence the leveling of ink and hence affect ink setting and the print quality. However, ink filaments are difficult to image due to their short lifetime and fine length scale. Due to this difficulty, limited work has been reported on the parameters that influence filament size and methods to characterize it. We imaged ink filament remains and quantified some of their characteristics by changing printing speed, ink amount, and fountain solution type. Printed samples were prepared using a laboratory printability tester with varying ink levels and operating settings. Rhodamine B dye was incorporated into fountain solutions to aid in the detection of the filaments. The prints were then imaged with a confocal laser scanning microscope (CLSM) and images were further analyzed for their surface topography. Modeling of the pressure pulses in the printing nip was included to better understand the mechanism of filament formation and the origin of filament length scale. Printing speed and ink amount changed the size distribution of the observed filament remains. There was no significant difference between fountain solutions with or without isopropyl alcohol on the observed patterns of the filament remains.

ACTIVATED SLUDGE FLOC CHARACTERIZATION BY CONFOCAL LASER SCANNING MICROSCOPY

2012 ◽  
Vol 11 (3) ◽  
pp. 669-674 ◽  
Author(s):  
Szabolcs Szilveszter ◽  
Botond Raduly ◽  
Szilard Bucs ◽  
Beata Abraham ◽  
Szabolcs Lanyi ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Confocal Laser Scanning Microscopy ◽  
Laser Scanning ◽  
Laser Scanning Microscopy ◽  
Confocal Laser Scanning ◽  
Scanning Microscopy ◽  
Confocal Laser
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