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Kim MH, Kim SH, Lee G, Mok J, Lee MK, Song JS, Eom JS. Next-generation sequencing using tissue specimen collected with a 1.1 mm-diameter cryoprobe in patients with lung cancer. Respirology 2024; 29:333-339. [PMID: 38379178 DOI: 10.1111/resp.14680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 01/30/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND AND OBJECTIVE Next-generation sequencing (NGS) analysis is considered standard for lung cancer diagnosis in clinical practice. Little is known about the feasibility of NGS using tumour tissue sampled with a 1.1 mm-diameter cryoprobe. We aimed to investigate the suitability of specimens obtained by transbronchial cryobiopsy (TBC) using a 1.1 mm-diameter cryoprobe for NGS analysis. METHODS Patients with lung cancer who underwent TBC using a 1.1 mm-diameter cryoprobe for NGS testing between October 2020 and April 2023 were enrolled. A 4.0- or 3.0 mm-diameter bronchoscope with radial probe endobronchial ultrasound and virtual bronchoscopic navigation was used to detect peripheral lung lesions. All procedures were performed under fluoroscopic guidance. Data were analysed retrospectively. RESULTS A total of 56 patients underwent TBC using a 1.1 mm cryoprobe for NGS testing, during the study period. Most patients (98%) were in the advanced stage of lung cancer (recurrent or inoperable disease of stages III or IV). The diagnostic yield of NGS for DNA and RNA sequencing was 95% each (53 of 56). Moderate bleeding was noted in three patients (5%) and none of the study patients developed life-threatening complications, such as pneumothorax or lung infection. CONCLUSION TBC using a 1.1 mm-diameter cryoprobe is a useful and safe tool for NGS analysis, for both DNA and RNA sequencing.
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Affiliation(s)
- Mi-Hyun Kim
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
- Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Soo Han Kim
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
- Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Geewon Lee
- Department of Radiology, Pusan National University School of Medicine, Busan, Republic of Korea
- Department of Radiology, Pusan National University Hospital, Busan, Republic of Korea
| | - Jeongha Mok
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
- Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Min Ki Lee
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
- Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Ju Sun Song
- GC Genome Corporation, Yongin, Republic of Korea
| | - Jung Seop Eom
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Republic of Korea
- Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
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Jendzjowsky N, Laing A, Malig M, Matyas J, de Heuvel E, Dumonceaux C, Dumoulin E, Tremblay A, Leigh R, Chee A, Kelly MM. Long-term modulation of airway remodelling in severe asthma following bronchial thermoplasty. Eur Respir J 2022; 59:2100622. [PMID: 34049950 DOI: 10.1183/13993003.00622-2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 05/16/2021] [Indexed: 11/05/2022]
Abstract
RationaleBronchial thermoplasty is a mechanical therapeutic intervention that has been advocated as an effective treatment option for severe asthma. The mechanism is promoted as being related to the attenuation of airway smooth muscle which has been shown to occur in the short-term. However, long-term studies of the effects of bronchial thermoplasty on airway remodelling are few, with only limited assessment of airway remodelling indices.ObjectivesTo evaluate the effect of bronchial thermoplasty on 1) airway epithelial and smooth muscle cells in culture and 2) airway remodelling in patients with severe asthma who have been prescribed bronchial thermoplasty up to 12 months post-treatment.MethodsThe distribution of heat within the airway by bronchial thermoplasty was assessed in a porcine model. Culture of human airway smooth muscle cells and bronchial epithelial cells evaluated the impact of thermal injury. Histological evaluation and morphometric assessment were performed on bronchial biopsies obtained from severe asthma patients at baseline, 6 weeks and 12 months following bronchial thermoplasty.ResultsBronchial thermoplasty resulted in heterogeneous heating of the airway wall. Airway smooth muscle cell cultures sustained thermal injury, whilst bronchial epithelial cells were relatively resistant to heat. Airway smooth muscle and neural bundles were significantly reduced at 6 weeks and 12 months post-treatment. At 6 weeks post-treatment, submucosal collagen was reduced and vessel density increased, with both indices returning to baseline at 12 months. Goblet cell numbers, submucosal gland area and sub-basement membrane thickness were not significantly altered at any time point examined.ConclusionsBronchial thermoplasty primarily affects airway smooth muscle and nerves with the effects still present at 12 months post-treatment.
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Affiliation(s)
- Nicholas Jendzjowsky
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Division of Respiratory and Critical Care Physiology and Medicine, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- Authors contributed equally
| | - Austin Laing
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Dept of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Authors contributed equally
| | - Michelle Malig
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Dept of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - John Matyas
- Dept of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Elaine de Heuvel
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Curtis Dumonceaux
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Elaine Dumoulin
- Dept of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Alain Tremblay
- Dept of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Richard Leigh
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Dept of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Alex Chee
- Dept of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Authors contributed equally
| | - Margaret M Kelly
- Dept of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Dept of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Authors contributed equally
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Zhou L, Niu R, Zhou H, Wang Z, Wang F, Yang X, Deng I, Zhu Z, Zhou X, Xiong L. CT imaging character of different brain regions in different ages of Diannan small-ear pigs. IBRAIN 2021; 7:90-94. [PMID: 37786909 PMCID: PMC10528774 DOI: 10.1002/j.2769-2795.2021.tb00070.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/16/2021] [Accepted: 05/20/2021] [Indexed: 10/04/2023]
Abstract
Objective To collect and establish normal data of the brain regions of Diannan small-ear (DSE pigs, basically throughout measuring and comparing computed tomography values of the barin. Methods 12 ordinary DSE pigs were divided into juvenile, adult, old groups based on the physiological ages (n=4) A SOMATOM Definition AS 64-row 128-slice 4D spiral CT scanner (SOMATOM Definition AS, Germany) was used to collect CT images of DSE pigs, record and analyze the scanning data. Results Compared with the juvenile group, the CT values of the right frontal lobe, right parietal lobe, right temporal lobe, left temporal lobe, and right occipital lobe were significantly higher in the elderly group. Compared with the adult group, the CT values of the right frontal lobe, left frontal lobe, right parietal lobe, right temporal lobe, left temporal lobe, and right occipital lobe of the elderly group were significantly higher. Conclusion The results of the study can be used to evaluate the changes in CT values of various brain regions in piglets of different ages and future pig head injury models or other studies that require CT-based analysis.
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Affiliation(s)
- Lin Zhou
- Department of AnesthesiaAffiliated Hospital of Zunyi Medical University ZunyiGuizhouChina
| | - Rui‐Ze Niu
- Animal Zoology DepartmentInstitute of Neuroscience, Kunming Medical UniversityKunmingYunnanChina
| | - Hong‐Su Zhou
- Department of AnesthesiaAffiliated Hospital of Zunyi Medical University ZunyiGuizhouChina
| | - Zheng‐Meng Wang
- Department of Orthopedics Affiliated Hospital of Zunyi Medical University ZunyiGuizhouChina
| | - Feng‐Lin Wang
- Department of AnesthesiaAffiliated Hospital of Zunyi Medical University ZunyiGuizhouChina
| | - Xin‐Xin Yang
- Department of AnesthesiaAffiliated Hospital of Zunyi Medical University ZunyiGuizhouChina
| | - Issac Deng
- Clinical and Health Sciences, University of South AustraliaAdelaide5000South AustraliaAustralia
| | - Zhao‐Qiong Zhu
- Department of AnesthesiaAffiliated Hospital of Zunyi Medical University ZunyiGuizhouChina
| | - Xin‐Fu Zhou
- Clinical and Health Sciences, University of South AustraliaAdelaide5000South AustraliaAustralia
| | - Liu‐Lin Xiong
- Clinical and Health Sciences, University of South AustraliaAdelaide5000South AustraliaAustralia
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