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Dolganova IN, Shikunova IA, Katyba GM, Zotov AK, Mukhina EE, Shchedrina MA, Tuchin VV, Zaytsev KI, Kurlov VN. Optimization of sapphire capillary needles for interstitial and percutaneous laser medicine. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-7. [PMID: 31849206 PMCID: PMC7006039 DOI: 10.1117/1.jbo.24.12.128001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
Sapphire capillary needles fabricated by edge-defined film-fed growth (EFG) technique hold strong potential in laser thermotherapy and photodynamic therapy, thanks to the advanced physical properties of sapphire. These needles feature an as-grown optical quality, their length is tens of centimeters, and they contain internal capillary channels, with open or closed ends. They can serve as optically transparent bearing elements with optical fibers introduced into their capillary channels in order to deliver laser radiation to biological tissues for therapeutic and, in some cases, diagnostic purposes. A potential advantage of the EFG-grown sapphire needles is associated with an ability to form the tip of a needle with complex geometry, either as-grown or mechanically treated, aimed at controlling the output radiation pattern. In order to examine a potential of the radiation pattern shaping, we present a set of fabricated sapphire needles with different tips. We studied the radiation patterns formed at the output of these needles using a He-Ne laser as a light source, and used intralipid-based tissue phantoms to proof the concept experimentally and the Monte-Carlo modeling to proof it numerically. The observed results demonstrate a good agreement between the numerical and experimental data and reveal an ability to control within wide limits the direction of tissue exposure to light and the amount of exposed tissue by managing the sapphire needle tip geometry.
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Affiliation(s)
- Irina N. Dolganova
- Russian Academy of Sciences, Institute of Solid State Physics, Chernogolovka, Russia
- Sechenov First Moscow State Medical University, Institute for Regenerative Medicine, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Irina A. Shikunova
- Russian Academy of Sciences, Institute of Solid State Physics, Chernogolovka, Russia
| | - Gleb M. Katyba
- Russian Academy of Sciences, Institute of Solid State Physics, Chernogolovka, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Arsen K. Zotov
- Russian Academy of Sciences, Institute of Solid State Physics, Chernogolovka, Russia
| | | | - Marina A. Shchedrina
- Sechenov First Moscow State Medical University, Institute for Regenerative Medicine, Moscow, Russia
| | - Valery V. Tuchin
- Saratov State University, Saratov, Russia
- Russian Academy of Sciences, Institute of Precision Mechanics and Control, Saratov, Russia
- Tomsk State University, Tomsk, Russia
- ITMO University, St. Petersburg, Russia
| | - Kirill I. Zaytsev
- Sechenov First Moscow State Medical University, Institute for Regenerative Medicine, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
- Russian Academy of Sciences, Prokhorov General Physics Institute, Moscow, Russia
| | - Vladimir N. Kurlov
- Russian Academy of Sciences, Institute of Solid State Physics, Chernogolovka, Russia
- Sechenov First Moscow State Medical University, Institute for Regenerative Medicine, Moscow, Russia
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Lu J, Roy B, Anderson M, Leggett CL, Levy MJ, Pogue B, Hasan T, Wang KK. Verteporfin- and sodium porfimer-mediated photodynamic therapy enhances pancreatic cancer cell death without activating stromal cells in the microenvironment. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-11. [PMID: 31741351 PMCID: PMC7003148 DOI: 10.1117/1.jbo.24.11.118001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 10/18/2019] [Indexed: 05/05/2023]
Abstract
The goal of our study was to determine the susceptibility of different pancreatic cell lines to clinically applicable photodynamic therapy (PDT). The efficacy of PDT of two different commercially available photosensitizers, verteporfin and sodium porfimer, was compared using a panel of four different pancreatic cancer cell lines, PANC-1, BxPC-3, CAPAN-2, and MIA PaCa-2, and an immortalized non-neoplastic pancreatic ductal epithelium cell line, HPNE. The minimum effective concentrations and dose-dependent curves of verteporfin and sodium porfimer on PANC-1 were determined. Since pancreatic cancer is known to have significant stromal components, the effect of PDT on stromal cells was also assessed. To mimic tumor-stroma interaction, a co-culture of primary human fibroblasts or human pancreatic stellate cell (HPSCs) line with PANC-1 was used to test verteporfin-PDT-mediated cell death of PANC-1. Two cytokines (TNF-α and IL-1β) were used for stimulation of primary fibroblasts (derived from human esophageal biopsies) or HPSCs. The increased expression of smooth muscle actin (α-SMA) confirmed the activation of fibroblasts or HPSC upon treatment with TNF-α and IL-1β. Cell death assays showed that both sodium porfimer- and verteporfin-mediated PDT-induced cell death in a dose-dependent manner. However, verteporfin-PDT treatment had a greater efficiency with 60 × lower concentration than sodium porfimer-PDT in the PANC-1 incubated with stimulated fibroblasts or HPSC. Moreover, activation of stromal cells did not affect the treatment of the pancreatic cancer cell lines, suggesting that the effects of PDT are independent of the inflammatory microenvironment found in this two-dimensional culture model of cancers.
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Affiliation(s)
- Jingjing Lu
- Mayo Clinic and Foundation, Barrett’s Esophagus Unit, Division of Gastroenterology and Hepatology, Rochester, Minnesota, United States
- Peking University Third Hospital, Gastroenterology Department, Beijing, China
| | - Bhaskar Roy
- Mayo Clinic and Foundation, Barrett’s Esophagus Unit, Division of Gastroenterology and Hepatology, Rochester, Minnesota, United States
| | - Marlys Anderson
- Mayo Clinic and Foundation, Barrett’s Esophagus Unit, Division of Gastroenterology and Hepatology, Rochester, Minnesota, United States
| | - Cadman L. Leggett
- Mayo Clinic and Foundation, Barrett’s Esophagus Unit, Division of Gastroenterology and Hepatology, Rochester, Minnesota, United States
| | - Michael J. Levy
- Mayo Clinic and Foundation, Barrett’s Esophagus Unit, Division of Gastroenterology and Hepatology, Rochester, Minnesota, United States
| | - Brian Pogue
- Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States
| | - Tayyaba Hasan
- Harvard School of Medicine, Massachusetts General Hospital, Boston, Massachusetts, United States
| | - Kenneth K. Wang
- Mayo Clinic and Foundation, Barrett’s Esophagus Unit, Division of Gastroenterology and Hepatology, Rochester, Minnesota, United States
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Baran TM. Recovery of optical properties using interstitial cylindrical diffusers as source and detector fibers. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:77001. [PMID: 27447954 PMCID: PMC4956772 DOI: 10.1117/1.jbo.21.7.077001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 07/07/2016] [Indexed: 05/26/2023]
Abstract
We demonstrate recovery of optical properties using arrays of interstitial cylindrical diffusing fibers as sources and detectors. A single 1-cm diffuser delivered laser illumination at 665 nm, while seven 1- and 2-cm diffusers at 1-cm grid spacing acted as detectors. Extraction of optical properties from these measurements was based upon a diffusion model of emission and detection distributions for these diffuser fibers, informed by previous measurements of heterogeneous axial detection. Verification of the technique was performed in 15 liquid tissue-simulating phantoms consisting of deionized water, India ink as absorber, and Intralipid 20% as scatterer. For the range of optical properties tested, mean errors were 4.4% for effective attenuation coefficient, 12.6% for absorption coefficient, and 7.6% for reduced scattering coefficient. Error in recovery tended to increase with decreasing transport albedo. For therapeutic techniques involving the delivery of light to locations deep within the body, such as interstitial photodynamic and photothermal therapies, the methods described here would allow the treatment diffuser fibers also to be used as sources and detectors for recovery of optical properties. This would eliminate the need for separately inserted fibers for spectroscopy, reducing clinical complexity and improving the accuracy of treatment planning.
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Affiliation(s)
- Timothy M. Baran
- University of Rochester Medical Center, Department of Imaging Sciences, 601 Elmwood Avenue, Box 648, Rochester, New York 14642, United States
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