1
|
Liu HC, Zeng Y, Gong C, Chen X, Kijanka P, Zhang J, Genyk Y, Tchelepi H, Wang C, Zhou Q, Zhao X. Wearable bioadhesive ultrasound shear wave elastography. Sci Adv 2024; 10:eadk8426. [PMID: 38335289 PMCID: PMC10857377 DOI: 10.1126/sciadv.adk8426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/10/2024] [Indexed: 02/12/2024]
Abstract
Acute liver failure (ALF) is a critical medical condition defined as the rapid development of hepatic dysfunction. Conventional ultrasound elastography cannot continuously monitor liver stiffness over the course of rapidly changing diseases for early detection due to the requirement of a handheld probe. In this study, we introduce wearable bioadhesive ultrasound elastography (BAUS-E), which can generate acoustic radiation force impulse (ARFI) to induce shear waves for the continuous monitoring of modulus changes. BAUS-E contains 128 channels with a compact design with only 24 mm in the azimuth direction for comfortable wearability. We further used BAUS-E to continuously monitor the stiffness of in vivo rat livers with ALF induced by d-galactosamine over 48 hours, and the stiffness change was observed within the first 6 hours. BAUS-E holds promise for clinical applications, particularly in patients after organ transplantation or postoperative care in the intensive care unit (ICU).
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Boston, MA 02139, USA
| | - Yushun Zeng
- Alfred E. Mann Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Chen Gong
- Alfred E. Mann Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Xiaoyu Chen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Boston, MA 02139, USA
| | - Piotr Kijanka
- Department of Robotics and Mechatronics, AGH University of Krakow, Krakow 30059, Poland
| | - Junhang Zhang
- Alfred E. Mann Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Yuri Genyk
- Division of Hepatobiliary, Pancreatic and Abdominal Organ Transplant Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Hisham Tchelepi
- Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Chonghe Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Boston, MA 02139, USA
| | - Qifa Zhou
- Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Alfred E. Mann Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Boston, MA 02139, USA
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Boston, MA 02139, USA
| |
Collapse
|
2
|
Cao B, Fan XT, Wang RH, Luan XL, Qian CY, Yu JJ, Liu HC, Li MC, Li GL, Zhao XQ, Yuan XQ, Wan KL. [Preliminary evaluation of immunogenicity and protective effect of multicomponent recombinant protein vaccine EPRHP014 against tuberculosis]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1653-1660. [PMID: 37875456 DOI: 10.3760/cma.j.cn112338-20230217-00088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To evaluate the immunogenicity and protective effect of a multicomponent recombinant protein vaccine EPRHP014 constructed independently and provide a scientific basis for developing new tuberculosis (TB) vaccine and effective prevention and control of TB. Methods: Three full-length Mycobacterium (M.) tuberculosis protein antigens (EsxH, Rv2628, and HspX) and two epitope-predicted and optimized epitope-dominant protein antigens (nPPE18 and nPstS1) were selected, from which five protein antigens were used to construct a protein antigen composition EPRHP014, including a fusion expression multi-component protein antigen (EPRHP014f) and a multi-component mixed protein antigen (EPRHP014m) formed with the five single protein using clone, purification, and purification respectively. Multicomponent protein vaccines EPRHP014f and EPRHP014m were prepared with aluminum adjuvant, and the BCG vaccine was used as a control. ELISA detected the titer of serum-specific antibodies, the secretion of various cytokines was detected by ELISpot and Luminex, and immune protection was observed by the M. tuberculosis growth inhibition test in vitro. The results were statistically analyzed by t-test or rank sum test, and P<0.05 was considered a statistically significant difference. Results: Mice Immunized with EPRHP014m and EPRHP014f could produce highly effective IgG antibodies and their subtypes IgG1 and IgG2a, and the antibody titers were similar to those of mice immunized with BCG, with no statistical significance (P>0.05). The number of spot-forming cells (SFC) secreting IFN-γ and IL-4 induced by EPRHP014f group was significantly higher than those by EPRHP014m group and BCG group (P<0.05), but there was no significant difference in the number of SFC for IFN-γ and IL-4 induced between EPRHP014m group and BCG group (P>0.05). The secretion levels of GM-CSF and IL-12p70 induced by the EPRHP014m group were higher than those of the BCG group (P<0.05), but there was no significant difference in the levels of IL-6 and IL-10 induced between EPRHP014m group and BCG group (P>0.05). There was no significant difference in the secretions of IL-6, IL-10, IL-12, and GM-CSF between the EPRHP014f and BCG groups (P>0.05). EPRHP014m group, EPRHP014f group, and BCG group had obvious antibacterial effects in vitro, and the difference was insignificant (P>0.05). Conclusion: Both EPRHP014f and EPRHP014m can induce strong humoral and cellular immune responses in mice after immunization, and have a strong ability to inhibit the growth of M. tuberculosis in vitro, indicating that the antigen composition EPRHP014 has good potential in the development and application of TB vaccine.
Collapse
Affiliation(s)
- B Cao
- School of Public Health, University of South China, Hengyang 421001, China National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - X T Fan
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - R H Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - X L Luan
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - C Y Qian
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China School of Life Sciences, College of Laboratory Medicine, Wenzhou Medical University, Wenzhou 325035, China
| | - J J Yu
- School of Public Health, University of South China, Hengyang 421001, China National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - H C Liu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - M C Li
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - G L Li
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - X Q Zhao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| | - X Q Yuan
- School of Public Health, University of South China, Hengyang 421001, China
| | - K L Wan
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention/State Key Laboratory of Infectious Disease Prevention and Control, Beijing 102206, China
| |
Collapse
|
3
|
Liu HC, Morse R, Nelson TJ, Williamson CW, Vitzthum L, Zakeri K, Henderson G, Thompson CA, Zou J, Gillison M, Mell LK. Effectiveness of Cisplatin in P16+ Oropharyngeal Cancer According to Relative Risk for Cancer Events: Ancillary Analysis of RTOG 1016. Int J Radiat Oncol Biol Phys 2023; 117:S69. [PMID: 37784554 DOI: 10.1016/j.ijrobp.2023.06.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To test the hypothesis that the effectiveness of cisplatin in p16+ oropharyngeal squamous cell carcinoma (OPSCC) increases with patients' relative risk for cancer events. MATERIALS/METHODS Ancillary analysis of 805 patients enrolled on RTOG 1016 accessed via Project DataSphere. Eligible patients had p16+ OPSCC, AJCC 7th T1-T2 N2a-N3 or T3-T4 N0-N3 M0, ECOG PS 0-1. Patients were randomized to RT with concurrent cisplatin vs. cetuximab. Relative risk for competing events was quantified using the Head and Neck Cancer Intergroup predictive classifier (omega score). Higher scores indicate higher relative risk for cancer events (LRF or distant metastasis) vs. competing mortality. We compared this to favorable, unfavorable/low, and unfavorable/intermediate risk groups using standard criteria: NRG HN005 eligible/low RTOG risk (Ang et al.), HN005 ineligible/low RTOG risk, and intermediate RTOG risk. Omega score cutoffs were selected to match numbers in standard risk strata. HRs for the effect of cisplatin vs. cetuximab on PFS and OS were compared for standard vs. relative risk strata. 1-tailed interaction tests were used to test whether cisplatin effectiveness increased within risk strata. RESULTS There were 354, 219, and 232 patients in standard favorable, unfavorable/low, and unfavorable/intermediate risk groups. Omega score cutoffs were 0.80 and 0.84 to define low, intermediate, and high relative risk groups. Discordant standard vs. relative risk classifications occurred in 559 patients (69.4%). Increasing omega score was associated with significantly higher relative HR (rHR) for cancer events (3.40, 95% CI: 1.66-6.96) and increasing effectiveness of cisplatin vs. cetuximab (Table), but standard risk grouping was not (rHR 0.80, 95% CI: 0.49-1.32). The effect of cisplatin on PFS significantly increased with higher omega score (interaction -0.30, p = .046), but decreased with increasing standard risk strata (interaction +0.27, p = NS). CONCLUSION The effectiveness of cisplatin in p16+ OPSCC increased with higher omega score but not with standard risk group. Relative risk for cancer events should be taken into account when designing deintensification strategies.
Collapse
Affiliation(s)
- H C Liu
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA
| | - R Morse
- Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, NC
| | - T J Nelson
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA
| | - C W Williamson
- UCSD Radiation Oncology and Applied Medicine, La Jolla, CA
| | - L Vitzthum
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - K Zakeri
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - G Henderson
- University of California San Diego, Department of Radiation Medicine & Applied Sciences, La Jolla, CA
| | - C A Thompson
- University of North Carolina, Department of Epidemiology, Chapel Hill, NC
| | - J Zou
- Department of Family Medicine and Public Health and Department of Mathematics, University of California San Diego, La Jolla, CA
| | - M Gillison
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - L K Mell
- University of California San Diego, La Jolla, CA
| |
Collapse
|
4
|
Morse R, Nelson TJ, Liu HC, Williamson CW, Sacco A, Chitti BS, Henderson G, Todd J, Chen X, Gan GN, Rahn D, Sharabi A, Thompson CA, Zou J, Lominska CE, Shen C, Chera BS, Mell LK. Comparison of Standard vs. Relative Risk Models to Define Candidates for Deintensification in Locoregionally Advanced P16+ Oropharyngeal Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e608-e609. [PMID: 37785830 DOI: 10.1016/j.ijrobp.2023.06.1979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Various methods to identify candidates for treatment deintensification with p16+ oropharyngeal squamous cell carcinoma (OPSCC) have been used, but the optimal approach is unknown. MATERIALS/METHODS Multi-institutional cohort study of 385 patients with previously untreated p16+ OPSCC undergoing definitive radiotherapy (RT) with or without systemic therapy between 2009-2020. Chemotherapy intensity was categorized as high (bolus cisplatin and/or induction chemotherapy), medium (weekly cisplatin), or low (non-cisplatin or RT alone). Standard favorable vs. unfavorable risk was defined using NRG HN005 eligibility criteria. High vs. low relative risk (RR) group was defined using the HNCIG omega score (≥ 0.80 vs. < 0.80), which quantifies the proportion of a patient's overall event risk due to cancer. We used multivariable ordinal logistic regression to estimate effects of age (yrs), sex, performance status (PS), Charlson comorbidity index (CCI), T/N (AJCC 8th), current smoking, and pack-years (> 10 vs. ≤ 10) on treatment allocation. Effects on relative event hazards were estimated using generalized competing event regression. RESULTS Median follow-up time was 44.2 months. Chemotherapy intensity was high in 206 (54%), medium in 108 (28%), and low in 71 (18%). 280 patients (73%) were unfavorable risk and 197 (51%) were high RR. 178 patients (46%) had discordant risk classification. On univariable analysis, significant predictors of higher intensity chemotherapy (normalized odds ratio (OR)) were CCI 0-1 (OR 1.49, 95% CI: 1.23-1.79), high omega score (OR 1.46; 1.20-1.77), decreased age (OR 1.43; 1.18-1.74), and PS 0 (OR 1.22; 1.01-1.48). Controlling for CCI, higher omega score was associated with significantly higher odds of intensive chemotherapy (OR 1.35; 1.10-1.65, but unfavorable risk (HN005 ineligibility) was not (OR 1.19; 0.98-1.44). Higher omega score was also associated with significantly higher RR for cancer recurrence (Rec) vs. competing mortality (CM) events (relative HR (rHR) 1.76; 1.12-2.75), but unfavorable risk was not (rHR 1.05; 0.63-1.75). Among patients receiving cisplatin, 50 favorable risk patients (58%) had high RR; all of their event risk was due to cancer recurrence (Table). The 110 unfavorable risk patients (48%) with low omega score had significantly lower RR for cancer events compared to the high omega score group (rHR 0.49; 0.29-0.84). CONCLUSION Many patients with favorable risk p16+ OPSCC have high relative risk for cancer events, which correlates with a benefit of intensive treatment. The HNCIG omega score is a strong predictor of allocation to intensive chemotherapy and may help identify candidates for deintensification.
Collapse
Affiliation(s)
- R Morse
- Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, NC
| | - T J Nelson
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA
| | - H C Liu
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA
| | - C W Williamson
- UCSD Radiation Oncology and Applied Medicine, La Jolla, CA
| | - A Sacco
- University of California San Diego, San Diego
| | - B S Chitti
- Northwell Health Cancer Institute, Lake Success, NY
| | - G Henderson
- University of California San Diego, Department of Radiation Medicine & Applied Sciences, La Jolla, CA
| | - J Todd
- Yale University, New Haven, CT
| | - X Chen
- Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, NC
| | - G N Gan
- Department of Radiation Oncology, University of Kansas School of Medicine, Kansas City, KS
| | - D Rahn
- University of California San Diego, Department of Radiation Medicine & Applied Sciences, La Jolla, CA
| | - A Sharabi
- UC San Diego, Moores Cancer Center, Department of Radiation Medicine and Applied Sciences, La Jolla, CA
| | - C A Thompson
- University of North Carolina, Department of Epidemiology, Chapel Hill, NC
| | - J Zou
- Department of Family Medicine and Public Health and Department of Mathematics, University of California San Diego, La Jolla, CA
| | - C E Lominska
- Department of Radiation Oncology, University of Kansas School of Medicine, Kansas City, KS
| | - C Shen
- Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC
| | - B S Chera
- Department of Radiation Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - L K Mell
- University of California San Diego, La Jolla, CA
| |
Collapse
|
5
|
Ding JN, Liu HC, Yu M, Liu Y, Han D. [Measurement and analysis of the crown conical degree of maxillary incisors in patients with congenital tooth agenesis caused by different gene mutations]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:821-828. [PMID: 37550043 DOI: 10.3760/cma.j.cn112144-20230328-00119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Objective: To measure the crown conical degree of the remaining maxillary incisors in patients with congenital tooth agenesis, and to analyze the influence of different gene mutations on the crown conical degree of patients. Methods: Whole exome sequencing was performed on 85 patients with congenital tooth agenesis (50 males, 35 females, median age 19 years old) who visited the Department of Prosthodontics, Peking University School and Hospital of Stomatology from January 2019 to January 2023. The pathogenic gene was identified. The width of the crowns of the maxillary central and lateral incisors at the incisal 1/3 and gingival 1/3 were measured on the panoramic radiograph, and the ratio was defined as the crown conical degree. The smaller the ratio is, the more likely is the crown to be peg shaped teeth. The control group was matched by age and gender with 85 other patients with intact maxillary permanent incisors who were treated in the Department of Prosthodontics, Peking University School and Hospital of Stomatology from January 2019 to January 2023. The conical degree of the tooth agenesis group was compared with the control group by t-test, and the differences in the crown conical degree in different gene mutation groups were compared using one-way analysis of variance, and the multiple comparisons among gene groups were carried out using the LSD method. Results: Among the 85 tooth agenesis patients, the numbers of patients in each gene mutation group were 20 in ectodysplasin A (EDA) group, 8 in ectodysplasin A receptor (EDAR) group, 15 in wingless-type MMTV integration site family, member 10A (WNT10A) group, 16 in paired box 9 (PAX9) group, 10 in Msh homeobox 1 (MSX1) group, 10 in low-density lipoprotein receptor related protein 6 (LRP6) group, and 6 in bone morphogenetic protein4 (BMP4) group. The number of missing teeth were 1-27, median number 15 among the tooth agenesis patients. There was no significant difference in the conical degree between the left and right homonymous teeth in the congenital tooth agenesis group and the control group (P>0.05). The crown conical degree of maxillary central incisor and lateral incisor in the congenital missing teeth group (0.95±0.24, 0.90±0.22) was significantly smaller than that in the control group (1.12±0.09, 1.13±0.09) (t=-8.50, P<0.001; t=-11.47, P<0.001). In WNT10A mutants, the conical degree of lateral incisors (0.89±0.18) was less than that of central incisors (1.07±0.15)(t=3.68, P<0.001). The conical degree of central incisors and lateral incisors (0.70±0.23, 0.57±0.15) of EDA mutants was significantly lower than that in patients with other gene mutations (P>0.05). Conclusions: Compared with the normal control group, the remaining maxillary central and lateral incisors of the seven gene mutation groups of patients with congenital tooth agenesis all had different degrees of conical crown. Among them, the crown conical degree of maxillary central and lateral incisors of the EDA mutation was the most severe, and the WNT10A mutation affected the maxillary lateral incisors more specifically.
Collapse
Affiliation(s)
- J N Ding
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H C Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - M Yu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Han
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| |
Collapse
|
6
|
Liu HC, Gaihre B, Kijanka P, Lu L, Urban MW. Acoustic Force Elastography Microscopy. IEEE Trans Biomed Eng 2023; 70:841-852. [PMID: 36049008 PMCID: PMC9975118 DOI: 10.1109/tbme.2022.3203435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Hydrogel scaffolds have attracted attention to develop cellular therapy and tissue engineering platforms for regenerative medicine applications. Among factors, local mechanical properties of scaffolds drive the functionalities of cell niche. Dynamic mechanical analysis (DMA), the standard method to characterize mechanical properties of hydrogels, restricts development in tissue engineering because the measurement provides a single elasticity value for the sample, requires direct contact, and represents a destructive evaluation preventing longitudinal studies on the same sample. We propose a novel technique, acoustic force elastography microscopy (AFEM), to evaluate elastic properties of tissue engineering scaffolds. RESULTS AFEM can resolve localized and two-dimensional (2D) elastic properties of both transparent and opaque materials with advantages of being non-contact and non-destructive. Gelatin hydrogels, neat synthetic oligo[poly(ethylene glycol)fumarate] (OPF) scaffolds, OPF hydroxyapatite nanocomposite scaffolds and ex vivo biological tissue were examined with AFEM to evaluate the elastic modulus. These measurements of Young's modulus range from approximately 2 kPa to over 100 kPa were evaluated and are in good agreement with finite element simulations, surface wave measurements, and DMA tests. CONCLUSION The AFEM can resolve localized and 2D elastic properties of hydrogels, scaffolds and thin biological tissues. These materials can either be transparent or non-transparent and their evaluation can be done in a non-contact and non-destructive manner, thereby facilitating longitudinal evaluation. SIGNIFICANCE AFEM is a promising technique to quantify elastic properties of scaffolds for tissue engineering and will be applied to provide new insights for exploring elastic changes of cell-laden scaffolds for tissue engineering and material science.
Collapse
|
7
|
Lee HK, Capron CB, Liu HC, Roy T, Guddati MN, Greenleaf JF, Urban MW. Measurement of wave propagation through a tube using dual transducers for elastography in arteries. Phys Med Biol 2022; 67:10.1088/1361-6560/ac9c3f. [PMID: 36265476 PMCID: PMC10019347 DOI: 10.1088/1361-6560/ac9c3f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 10/20/2022] [Indexed: 11/27/2022]
Abstract
Objective.Measuring waves induced with acoustic radiation force (ARF) in arteries has been studied over the last decade. To date, it remains a challenge to quantitatively assess the local arterial biomechanical properties. The cylindrical shape and waveguide behavior of waves propagating in the arterial wall pose complexities to determining the mechanical properties of the artery.Approach. In this paper, an artery-mimicking tube in water is examined utilizing three-dimensional measurements. The cross-section of the tube is measured while a transducer is translated over 41 different positions along the length of the tube. Motion in the radial direction is calculated using two components of motion which are measured from the two orthogonal views of the cross-section. This enables more accurate estimation of motion along the circumference of tube.Main results. The results provide more information to categorize the motion in tube wall into two types of responses: a transient response and a steady state response. The transient response is caused by ARF application and the waves travel along the length of the tube for a relatively short period of time. This corresponds to the axial and circumferential propagating waves. The two circumferential waves travel along the circumference of tube in CW (clockwise) and CCW (counter-clockwise) direction and result in a standing wave. By using a directional filter, the two waves were successfully separated, and their propagation was more clearly visualized. As a steady state response, a circumferential mode is generated showing a symmetric motion (i.e. the proximal and distal walls move in the opposite direction) following the transient response.Significance.This study provides a more comprehensive understanding of the waves produced in an artery-mimicking tube with ARF application, which will provide opportunities for improving measurement of arterial mechanical properties.
Collapse
Affiliation(s)
- Hyoung-Ki Lee
- Department of Radiology, Mayo Clinic, Rochester, MN, United States of America
| | - Charles B Capron
- Mayo Clinic Graduate School of Biomedical Sciences, Rochester, United States of America
| | - Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Rochester, MN, United States of America
| | - Tuhin Roy
- North Carolina State University, Raleigh, NC, United States of America
| | - Murthy N Guddati
- North Carolina State University, Raleigh, NC, United States of America
| | - James F Greenleaf
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| | - Matthew W Urban
- Department of Radiology, Mayo Clinic, Rochester, MN, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| |
Collapse
|
8
|
Abstract
Continuous imaging of internal organs over days could provide crucial information about health and diseases and enable insights into developmental biology. We report a bioadhesive ultrasound (BAUS) device that consists of a thin and rigid ultrasound probe robustly adhered to the skin via a couplant made of a soft, tough, antidehydrating, and bioadhesive hydrogel-elastomer hybrid. The BAUS device provides 48 hours of continuous imaging of diverse internal organs, including blood vessels, muscle, heart, gastrointestinal tract, diaphragm, and lung. The BAUS device could enable diagnostic and monitoring tools for various diseases.
Collapse
Affiliation(s)
- Chonghe Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Xiaoyu Chen
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Liu Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | | | - Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
| | - Tao Zhou
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Xuanhe Zhao
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.,Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| |
Collapse
|
9
|
Zhai XT, Huang DZ, Hu YF, Xu XY, Wang JZ, Li HB, Hu M, Liu HC, Jiang H. [Analysis of the characteristic of clinical symptoms and cone-beam CT imaging changes in temporomandibular joint osteoarthritis patients with chewing side preference]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:688-693. [PMID: 35790507 DOI: 10.3760/cma.j.cn112144-20220430-00226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the clinical symptoms and cone-beam CT (CBCT) imaging characteristics of temporomandibular joint osteoarthritis (TMJOA) with chewing side preference (CSP). Methods: One hundred patients with TMJOA diagnosed in the Department of Stomatology, General Hospital of the Chinese PLA from January 2018 to December 2020 were enrolled, including 32 males and 68 females, with an median age of 27.5 years (16-71 years). According to the habit of CSP, 100 cases were divided into 71 cases of TMJOA with CSP group and 29 cases of TMJOA without CSP group. The clinical symptoms were observed, including pain, TMJ sounds, limited mouth opening as well as the radiograph imaging changes of condylar bone. When analyzing the radiograph imaging changes of condylar, the cases with bilateral TMJ symptoms were excluded and the remaining cases were divided into symptomatic sides and asymptomatic sides with CSP or without CSP according to the symptoms of the chief complaint. SPSS 25.0 was used to analyze the statistical data. Age data did not conform to normal distribution so that median and quartile spacing were used for description, and Mann-Whitney U test was used for nonparametric test. Qualitative data such as gender, clinical symptoms and condylar lesion types were described by composition ratio and Chi-Square test was performed. Results: There was no statistical significance in age and gender of TMJOA patients in the group with or without CSP (P>0.05). There incidence of pain in CSP group [83.1% (59/71)] was margina uy higher than that in non-CSP group but without statistical difference[65.5% (19/29)] (χ²=3.71, P=0.054). There was also no significant difference in TMJ sounds and limitation of mandibular movement between the two groups(χ²=0.11, P=0.742; χ²=0.48, P=0.489). Among all of joints, the most common types of TMJOA were articular flattening and shortening and erosion. CBCT showed that erosion [65.0% (130/200)], flattening and shortening [73.0% (146/200)], subcortical sclerosis [42.0% (84/200)], osteophyte [30.5% (61/200)] and subcortical cystic [15.5% (31/200)]. According to the different groups of chief complaint sides, intra-group comparisons show that the proportion of erosion in symptomatic sides of CSP group [80.0% (40/50)] was significantly higher than that in asymptomatic sides of CSP group [50.0% (25/50)] (χ²=9.89, P=0.002). Inter-group comparisons show that the proportion of condyle flattening and shortening in symptomatic sides of CSP group [84.0% (42/50)] was significantly higher than that in bilateral joint of non-CSP group (8/15) (χ²=8.81, P=0.032). There was no significant difference in the proportion of subcortical sclerosis, osteophyte and subcortical cystic between the group with or without CSP (P>0.05). Conclusions: TMJOA patients with CSP may be more prone to clinical symptoms of pain and CBCT imaging changes of condyle erosion as well as flattening and shortening. CSP may be a promoting factor for the development of TMJOA.
Collapse
Affiliation(s)
- X T Zhai
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - D Z Huang
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - Y F Hu
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - X Y Xu
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - J Z Wang
- Department of Radiology, General Hospital of Chinese PLA, Beijing 100853, China
| | - H B Li
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - M Hu
- Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China
| | - H C Liu
- Instutute of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China
| | - H Jiang
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| |
Collapse
|
10
|
Ruan Y, Kim HN, Ogana HA, Gang EJ, Li S, Liu HC, Bhojwani D, Wayne AS, Yang M, Kim YM. In vitro and in vivo effects of AVA4746, a novel competitive antagonist of the ligand binding of VLA-4, in B-cell acute lymphoblastic leukemia. Exp Ther Med 2021; 23:47. [PMID: 34934426 PMCID: PMC8652384 DOI: 10.3892/etm.2021.10969] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 09/14/2021] [Indexed: 12/16/2022] Open
Abstract
Treatment of resistant or recurrent acute lymphoblastic leukemia (ALL) remains a challenge. It was previously demonstrated that the adhesion molecule integrin α4, referred to hereafter as α4, mediates the cell adhesion-mediated drug resistance (CAM-DR) of B-cell ALL by binding to vascular cell adhesion molecule-1 (VCAM-1) on bone marrow stroma. In addition, it was previously observed that the blockade of α4 with natalizumab or inhibition using the small molecule antagonist TBC3486 sensitized relapsed ALL cells to chemotherapy. However, α4-targeted therapy is not clinically available for the treatment of leukemia to date. In the present study, the use of a novel non-peptidic small molecule integrin α4 antagonist, AVA4746, as a potential new approach to combat drug-resistant B-ALL was explored. An in vitro co-culture = model of primary B-ALL cells and an in vivo xenograft model of patient-derived B-ALL cells were utilized for evaluation of AVA4746. VLA-4 conformation activation, cell adhesion/de-adhesion, endothelial tube formation, in vivo leukemia cell mobilization and survival assays were performed. AVA4746 exhibited high affinity for binding to B-ALL cells, where it also efficiently blocked ligand-binding to VCAM-1. In addition, AVA4746 caused the functional de-adhesion of primary B-ALL cells from VCAM-1. Inhibition of α4 using AVA4746 also prevented angiogenesis in vitro and when applied in combination with chemotherapy consisting of Vincristine, Dexamethasone and L-asparaginase, it prolonged the survival of ~33% of the mice in an in vivo xenograft model of B-ALL. These data implicate the potential of targeting the α4-VCAM-1 interaction using AVA4746 for the treatment of drug-resistant B-lineage ALL.
Collapse
Affiliation(s)
- Yongsheng Ruan
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA.,Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Hye Na Kim
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| | - Heather A Ogana
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| | - Eun Ji Gang
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| | - Shuangyue Li
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| | - Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA
| | - Deepa Bhojwani
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| | - Alan S Wayne
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| | - Mo Yang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,Research Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, Guangdong 518107, P.R. China
| | - Yong-Mi Kim
- Department of Pediatrics, Division of Hematology-Oncology, Children's Hospital Los Angeles, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA
| |
Collapse
|
11
|
Abstract
This paper focuses on the medical properties of dental implants from different perspectives, and points out that oral rehabilitation with dental implants are a systematic engineering to repair the defects and missing dentitions and maintain the integrity of human oral and maxillofacial organs, restore oral function, and maintain oral and general health. It is necessary to strictly follow the medical rules and medical standards to prevent the deviation of dental implant medical research and clinical guidance. In order to meet the needs of people with more than 2 billion missing teeth in China, including nearly 20 million edentulous individuals, and to solve the contradiction between the needs of the public and the imbalance of dental implant medical development, it is proposed to build a high-level dental implant professional team of general practitioners and specialists with Chinese characteristics. Multidisciplinary research and development and original brand research and development in the field of dental implant in China, especially the transformation and promotion of the results, should be strengthened. By focusing on the development of digital network remote artificial intelligence dental implant popularization and improvement, the goal of systematic, standardized and homogeneous dental implant repair medical quality and quantity improvement can be achieved simultaneously. The diagnosis and treatment capabilities of difficult and complicated cases of dental implant in China could be improved.
Collapse
Affiliation(s)
- H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China
| |
Collapse
|
12
|
Wood BG, Kijanka P, Liu HC, Urban MW. Evaluation of Robustness of Local Phase Velocity Imaging in Homogenous Tissue-Mimicking Phantoms. Ultrasound Med Biol 2021; 47:3514-3528. [PMID: 34456084 PMCID: PMC8578323 DOI: 10.1016/j.ultrasmedbio.2021.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/21/2021] [Accepted: 08/01/2021] [Indexed: 06/13/2023]
Abstract
Shear wave elastography (SWE) is a method of evaluating mechanical properties of soft tissues. Most current implementations of SWE report the group velocity for shear wave velocity, which assumes an elastic, isotropic, homogenous and incompressible tissue. Local phase velocity imaging (LPVI) is a novel method of phase velocity reconstruction that allows for accurate evaluation of shear wave velocity at specified frequencies. This method's robustness was evaluated in 11 elastic and 8 viscoelastic phantoms using linear and curvilinear arrays. We acquired data with acoustic radiation force push beams with different focal depths and F-numbers and reconstructed phase velocity images over a wide range of frequencies. Regardless of phantom, push beam focal depth and reconstruction frequency, an F-number around 3.0 was found to produce the largest usable area in the phase velocity reconstructions. For elastic phantoms scanned with a linear array, the optimal focal depth, frequency range and maximum region of interest (ROI) were 20-30 mm, 100-400 Hz and 2.70 cm2, respectively. For viscoelastic phantoms scanned with a linear array, the optimal focal depth, frequency and maximum ROI were 20-30 mm, 100-300 Hz and 1.54 cm2, respectively. For the curvilinear array in the same phantoms, optimal focal depth, frequency range and maximum ROIs were 45-60 mm, 100-400 and 100-300 Hz and 1.54 cm2, respectively. In further work, LPVI reconstructions from inclusion phantoms will be evaluated to simulate non-homogeneous tissues. Additionally, LPVI will be evaluated in larger-volume phantoms to account for wave reflection from the containers when using the curvilinear array.
Collapse
Affiliation(s)
- Benjamin G Wood
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Piotr Kijanka
- Department of Robotics and Mechatronics, AGH University of Science and Technology, Krakow, Poland
| | - Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Matthew W Urban
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.
| |
Collapse
|
13
|
Huang DZ, Zhang Q, Zhai XT, Wang Y, Liu G, Hu M, Liu HC, Jiang H. [Analysis of the correlation between chewing side preference and disc displacement types and clinical symptoms in patients with anterior disc displacement of temporomandibular joint]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:753-758. [PMID: 34404140 DOI: 10.3760/cma.j.cn112144-20210119-00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical symptoms and types of disc displacement of patients with anterior disc displacement (ADD) of temporomandibular joint (TMJ) and to explore the correlation between chewing side preference (CSP) and the clinical symptoms and types of disc displacement of ADD patients. Methods: This was a cross-sectional study of the ADD patients diagnosed by clinical symptoms and MRI findings of TMJ in the Department of Stomatology, General Hospital of Chinese PLA from January 2018 to December 2019. A total of 111 ADD patients [33 males and 78 females, aged(31.0±10.9) years old] were included. The patients were divided into two groups according to whether they had CSP: non-CSP group (n=40) and CSP group (n=71). The clinical symptoms and types of ADD were observed and recorded. According to the specific side of CSP in the CSP group, the patients were further divided into the ipsilateral side and the contralateral side of CSP. The pain, TMJ sounds and the ADD types were also observed. Chi square test was used to compare the pain, TMJ sounds, limited mouth opening and ADD types of the two groups. Binary Logistic regression model was used to analyze the correlation between CSP and clinical symptoms and ADD characteristics. Results: The incidence of pain in the CSP group [89% (63/71)] was significantly higher than that in the non-CSP group [70% (28/40)] (P<0.05). In CSP patients, the incidences of pain and joint sounds on the ipsilateral side of CSP were significantly higher than that on the contralateral side (P<0.05). MRI showed that the incidence of bilateral ADD in the CSP group [58%(41/71)] was significantly higher than that in the non-CSP group [37%(15/40)] (P<0.05).There were significant differences in the incidences of no disc displacement (DD), anterior disk displacement with reduction(ADDwR) and anterior disk displacement without reduction (ADDwoR) between ipsilateral and contralateral joints of the CSP patients (P<0.05). There were no significant differences in the incidences of no DD, ADDwR and ADDwoR between left and right joints of the non-CSP patients (P>0.05). The incidence of ADDwoR in ipsilateral side of the CSP patients was significantly higher than that in contralateral side (P<0.05). Pain (OR=3.375) and the side of disc displacement (OR=2.278) in patients with ADD were positively correlated with CSP (P<0.05). Conclusions: The clinical symptoms and types of disc displacement between patients with and without CSP were significantly different. The incidences of pain and bilateral disc displacement in the CSP group were significantly higher than those in the non-CSP group. In addition, the incidences of pain, TMJ sounds and anterior disk displacement without reduction on the ipsilateral side of patients with CSP were significantly higher than those on the contralateral side. The pain symptoms and side of disc displacement were positively related to CSP.
Collapse
Affiliation(s)
- D Z Huang
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - Q Zhang
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - X T Zhai
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| | - Y Wang
- Department of Radiology, General Hospital of Chinese PLA, Beijing 100853, China
| | - G Liu
- Department of Radiology, General Hospital of Chinese PLA, Beijing 100853, China
| | - M Hu
- Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China
| | - H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China
| | - H Jiang
- Department of Prosthodontics, General Hospital of Chinese PLA, Beijing 100853, China
| |
Collapse
|
14
|
Williamson CW, Liu HC, Mayadev J, Mell LK. Advances in External Beam Radiation Therapy and Brachytherapy for Cervical Cancer. Clin Oncol (R Coll Radiol) 2021; 33:567-578. [PMID: 34266728 DOI: 10.1016/j.clon.2021.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/04/2021] [Accepted: 06/28/2021] [Indexed: 11/18/2022]
Abstract
The standard of care for the definitive treatment of locoregionally advanced cervical cancer is external beam radiation therapy (EBRT) with concurrent chemotherapy followed by a brachytherapy boost. Historically, EBRT was delivered via a two-dimensional technique based primarily on bony landmarks. This gave way to three-dimensional conformal radiation therapy, which allows for dose calculation and adjustment based on individual tumour and patient anatomy. Further technological advances have established intensity-modulated radiation therapy (IMRT) as a standard treatment modality, given the ability to maintain tumoricidal doses to target volumes while reducing unwanted radiation dose to nearby critical structures, thereby reducing toxicity. Routine image guidance allows for increased confidence in patient alignment prior to treatment, and the ability to visualise the daily position of the targets and organs at risk has been instrumental in allowing safe reductions in treated volumes. Additional EBRT technologies, including proton therapy and stereotactic body radiation therapy, may further improve the therapeutic index. In the realm of brachytherapy, a shift from point-based dose planning to image-guided brachytherapy has been associated with improved local control and reduced toxicity, with additional refinement ongoing. Here we will discuss these advances, the supporting data and future directions.
Collapse
Affiliation(s)
- C W Williamson
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, California, USA
| | - H C Liu
- La Jolla Center for Precision Radiation Medicine, La Jolla, California, USA
| | - J Mayadev
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, California, USA
| | - L K Mell
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, California, USA; La Jolla Center for Precision Radiation Medicine, La Jolla, California, USA.
| |
Collapse
|
15
|
Liang JF, Zhu Y, Li JX, Wang C, Liu HC, Hou JS. [Management of major complications in surgical treatment of mandibular osteoradionecrosis by using vascularized free flaps]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:435-440. [PMID: 33904277 DOI: 10.3760/cma.j.cn112144-20210118-00023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To retrospectively analyze of the prevention and management of major complications in surgical treatment of osteoradionecrosis (ORN) of the mandible by using vascularized free flaps and to provide a reference for improving clinical treatments. Methods: All cases diagnosed as mandibular ORN and received surgical treatment in the Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University from August 2014 to March 2019 were included. The patients' clinical data, mainly including general information, primary tumor, interval time between radiotherapy and osteoradionecrosis, surgical methods and postoperative complications, were collected. The data of surgical methods and postoperative complications of these patients were compared with the similar data of patients with malignant tumor surgically treated by using vascularized free flaps during the same period. Results: The postoperative follow-up data of 104 patients with mandibular ORN, who underwent surgery in our hospital, were collected. In the control group, surgeries of vascularized free flap transfer were performed in 430 patients with malignant tumor. Among the 34 ORN cases (34/104, 32.7%) of segmental resection with vascularized free flap transfer, there were 13 cases (13/34, 38.2%) of postoperative local infection in maxillofacial area, 6 cases (17.6%) of pulmonary infection, 2 cases (5.9%) of venous thrombosis, 3 cases (8.8%) of anastomotic artery rupture and 5 cases (14.7%) of vascular crisis. One case died of depression and misanthropy. Meanwhile, among 430 patients with malignant tumor who underwent surgeries of vascular free flap reconstruction, 25 cases (5.8%) had postoperative local infection and 29 cases (6.7%) had pulmonary infection. Vascular crisis occurred in 12 cases (2.8%) and anastomotic artery rupture in 1 case (0.2%). No venous thrombosis and misanthropy occurred. The incidence of postoperative complications in mandibular ORN was much higher than that of vascularized free flap transfer surgeries in malignant tumor cases (P<0.05). Conclusions: Compared with patients with malignant tumors undergoing vascularized free flap transfer surgeries, patients with mandibular ORN undergoing same surgeries are more likely to have postoperative complications. This study may help clinicians to fully understand the local, general and psychological conditions during the perioperative period of ORN patients.
Collapse
Affiliation(s)
- J F Liang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatolagy, Guangzhou 510055, China
| | - Y Zhu
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatolagy, Guangzhou 510055, China
| | - J X Li
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatolagy, Guangzhou 510055, China
| | - C Wang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatolagy, Guangzhou 510055, China
| | - H C Liu
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatolagy, Guangzhou 510055, China
| | - J S Hou
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincal Key Laboratory of Stomatolagy, Guangzhou 510055, China
| |
Collapse
|
16
|
Abstract
We report a technique, named optical coherence viscometry (OCV), to measure the viscosity of Newtonian fluids in a noncontact manner. According to linear wave theory with small amplitudes, capillary waves are associated with fluid mechanical properties. To perform this measurement and avoid the overdamped effects of capillary waves in viscous fluids, transient acoustic radiation force was applied to generate capillary waves. Within a very limited field-of-view using optical coherence tomography, wave motion acquired in the time domain was analyzed using Fourier methods to study the wave velocity dispersion and attenuation relationships for capillary waves, which can reduce the fluid quantity drastically into tissue culture scale. We measure the viscosities of water, water-glycerol solutions with three concentrations, and biological plasma using the proposed OCV and compare the experimental results to theoretical calculations. OCV is sensitive to wave perturbations and can be a promising technique for measuring the viscosity of biological fluids and could be applied in future applications for measurements for lipid membranes in cell biology and tissue engineering investigation.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA
| | | |
Collapse
|
17
|
Liu HC, Kijanka P, Urban MW. Two-dimensional (2D) dynamic vibration optical coherence elastography (DV-OCE) for evaluating mechanical properties: a potential application in tissue engineering. Biomed Opt Express 2021; 12:1217-1235. [PMID: 33796348 PMCID: PMC7984779 DOI: 10.1364/boe.416661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 05/12/2023]
Abstract
Mechanical properties in tissues are an important indicator because they are associated with disease states. One of the well-known excitation sources in optical coherence elastography (OCE) to determine mechanical properties is acoustic radiation force (ARF); however, a complicated focusing alignment cannot be avoided. Another excitation source is a piezoelectric (PZT) stack to obtain strain images via compression, which can affect the intrinsic mechanical properties of tissues in tissue engineering. In this study, we report a new technique called two-dimensional (2D) dynamic vibration OCE (DV-OCE) to evaluate 2D wave velocities without tedious focusing alignment procedures and is a non-contact method with respect to the samples. The three-dimensional (3D) Fourier transform was utilized to transfer the traveling waves (x, y, t) into 3D k-space (kx, ky, f). A spatial 2D wavenumber filter and multi-angle directional filter were employed to decompose the waves with omni-directional components into four individual traveling directions. The 2D local wave velocity algorithm was used to calculate a 2D wave velocity map. Six materials, two homogeneous phantoms with 10 mm thickness, two homogeneous phantoms with 2 mm thickness, one heterogeneous phantom with 2 mm diameter inclusion and an ex vivo porcine kidney, were examined in this study. In addition, the ARF-OCE was used to evaluate wave velocities for comparison. Numerical simulations were performed to validate the proposed 2D dynamic vibration OCE technique. We demonstrate that the experimental results were in a good agreement with the results from ARF-OCE (transient OCE) and numerical simulations. Our proposed 2D dynamic vibration OCE could potentially pave the way for mechanical evaluation in tissue engineering and for laboratory translation with easy-to-setup and contactless advantages.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Piotr Kijanka
- Department of Robotics and Mechatronics, AGH University of Science and Technology, Al. Mickiewicza 30, Krakow 30-059, Poland
| | - Matthew W. Urban
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| |
Collapse
|
18
|
Liu HC, Abbasi M, Ding YH, Polley EC, Fitzgerald S, Kadirvel R, Kallmes DF, Brinjikji W, Urban MW. Characterizing thrombus with multiple red blood cell compositions by optical coherence tomography attenuation coefficient. J Biophotonics 2021; 14:e202000364. [PMID: 33314731 PMCID: PMC8258800 DOI: 10.1002/jbio.202000364] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Embolectomy is one of the emergency procedures performed to remove emboli. Assessing the composition of human blood clots is an important diagnostic factor and could provide guidance for an appropriate treatment strategy for interventional physicians. Immunostaining has been used to identity compositions of clots as a gold-standard procedure, but it is time-consuming and cannot be performed in situ. Here, we proposed that the optical attenuation coefficient of optical coherence tomography (OCT) can be a reliable indicator as a new imaging modality to differentiate clot compositions. Fifteen human blood clots with multiple red blood cell (RBC) compositions from 21% to 95% were prepared using healthy human whole blood. A homogeneous gelatin phantom experiment and numerical simulation based on the Lambert-Beer's law were examined to verify the validity of the attenuation coefficient estimation. The results displayed that optical attenuation coefficients were strongly correlated with RBC compositions. We reported that attenuation coefficients could be a promising biomarker to guide the choice of an appropriate interventional device in a clinical setting and assist in characterizing blood clots.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Mehdi Abbasi
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Yong Hong Ding
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Eric C. Polley
- Health Sciences Research, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Seán Fitzgerald
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Deptartment of Physiology, National University of Ireland Galway, University Road, Galway, Ireland
| | - Ramanathan Kadirvel
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - David F. Kallmes
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Matthew W. Urban
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| |
Collapse
|
19
|
Liu HC, Abbasi M, Ding YH, Roy T, Capriotti M, Liu Y, Fitzgerald S, Doyle KM, Guddati M, Urban MW, Brinjikji W. Characterizing blood clots using acoustic radiation force optical coherence elastography and ultrasound shear wave elastography. Phys Med Biol 2021; 66:035013. [PMID: 33202384 PMCID: PMC7880883 DOI: 10.1088/1361-6560/abcb1e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Thromboembolism in a cerebral blood vessel is associated with high morbidity and mortality. Mechanical thrombectomy (MT) is one of the emergenc proceduresperformed to remove emboli. However, the interventional approaches such as aspiration catheters or stent retriever are empirically selected. An inappropriate selection of surgical devices can influence the success rate during embolectomy, which can lead to an increase in brain damage. There has been growing interest in the study of clot composition and using a priori knowledge of clot composition to provide guidance for an appropriate treatment strategy for interventional physicians. Developing imaging tools which can allow interventionalists to understand clot composition could affect management and device strategy. In this study, we investigated how clots of different compositions can be characterized by using acoustic radiation force optical coherence elastography (ARF-OCE) and compared with ultrasound shear wave elastography (SWE). Five different clots compositions using human blood were fabricated into cylindrical forms from fibrin-rich (21% red blood cells, RBCs) to RBC-rich (95% RBCs). Using the ARF-OCE and SWE, we characterized the wave velocities measured in the time-domain. In addition, the semi-analytical finite element model was used to explore the relationship between the phase velocities with various frequency ranges and diameters of the clots. The study demonstrated that the wave group velocities generally decrease as RBC content increases in ARF-OCE and SWE. The correlation of the group velocities from the OCE and SWE methods represented a good agreement as RBC composition is larger than 39%. Using the phase velocity dispersion analysis applied to ARF-OCE data, we estimated the shear wave velocities decoupling the effects of the geometry and material properties of the clots. The study demonstrated that the composition of the clots can be characterized by elastographic methods using ARF-OCE and SWE, and OCE demonstrated better ability to discriminate between clots of different RBC compositions, compared to the ultrasound-based approach, especially in clots with low RBC compositions.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
- Author to whom any correspondence should be addressed
| | - Mehdi Abbasi
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
| | - Yong Hong Ding
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
| | - Tuhin Roy
- Department of Civil Engineering, North Carolina State University, Raleigh, NC 27695, United States of America
| | - Margherita Capriotti
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
| | - Yang Liu
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
| | - Seán Fitzgerald
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Karen M Doyle
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Murthy Guddati
- Department of Civil Engineering, North Carolina State University, Raleigh, NC 27695, United States of America
| | - Matthew W Urban
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic in Rochester, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, Minnesota, 200 First St SW, Rochester, MN 55905, United States of America
| |
Collapse
|
20
|
Li SY, Lu Y, Liu HC, Gang EJ, Le J, Qian SY, Tang SH, Si T, Pei RZ. Arsenic trioxide and all-trans retinoic acid in the treatment of children with newly diagnosed acute promyelocytic leukemia. Leuk Lymphoma 2021; 62:1267-1270. [PMID: 33439058 DOI: 10.1080/10428194.2020.1856832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Shuang-Yue Li
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - Ying Lu
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | | | - Eun Ji Gang
- Department of Pediatrics, Division of Hematology and Oncology, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jing Le
- Department of Hematology, Ningbo Medical Centre Lihuili Hospital, Ningbo, China
| | - Su-Ying Qian
- Department of Hematology, Hwa Mei hospital, University of Chinese Academy of Science (Ningbo No. 2 Hospital), Ningbo, China
| | - Shan-Hao Tang
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - Ting Si
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| | - Ren-Zhi Pei
- Department of Hematology, Yinzhou Hospital Affiliated to Medical School of Ningbo University, Ningbo, China
| |
Collapse
|
21
|
Abstract
Artificial intelligence (AI) is a kind of technology which is rapidly developed on the basis of computer technology. AI makes it possible for machines to learn from experience, adjust to new inputs and perform human-like tasks. It has been applied in many fields of human society, and is more and more widely used in medical field. The development and application of AI in stomatology will lead the future of stomatology to a certain extent. It is very important for stomatology professionals to recognize, learn and master AI, to keep pace with the pace of the new era of medical treatment and to apply it in medical practice. This paper introduces the application and progress of AI in stomatology clinic, research and teaching field, analyzes the existing and possible problems, and prospects the development of AI in the field of stomatology.
Collapse
Affiliation(s)
- H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China, , Tel: 0086-10-66936254
| |
Collapse
|
22
|
Liu HC. [Complete understanding and application of oral digital medical care]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:701-703. [PMID: 33045778 DOI: 10.3760/cma.j.cn112144-20200918-00507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100083, China
| |
Collapse
|
23
|
Fu KY, Hu M, Yu Q, Yang C, Cheng Y, Long X, Zhang ZG, Liu HC. [Experts consensus on MRI examination specification and diagnostic criteria of temporomandibular joint disc displacement]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:608-612. [PMID: 32878393 DOI: 10.3760/cma.j.cn112144-20200514-00268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The document represented the consensus amongst the professionals from the Society of TMD & Occlusion, Chinese Stomatological Association and provided guidelines with the MRI examination specification and diagnostic criteria of temporomandibular joint disc displacement.
Collapse
Affiliation(s)
- K Y Fu
- Center for TMD and Orofacial Pain, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - M Hu
- Department of Oral and Maxillofacial Surgery, General Hospital of Chinese PLA, Beijing 100853, China
| | - Q Yu
- Department of Radiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology & National Clinical Research Center of Stomatology, Shanghai 200011, China
| | - C Yang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology & National Clinical Research Center of Stomatology, Shanghai 200011, China
| | - Y Cheng
- Department of Radiology, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - X Long
- Department of Oral & Maxillofacial Surgery, School of Stomatology, Wuhan University, Wuhan 430079, China
| | - Z G Zhang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University & Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
| | - H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China
| |
Collapse
|
24
|
Yan YH, Li MC, Liu HC, Xiao TY, Li N, Lou YL, Wan KL. [Cellular immunity evaluation of five mycobacterium tuberculosis recombinant proteins and their compositions]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:539-545. [PMID: 32388956 DOI: 10.3760/cma.j.cn112150-20191119-00872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: The cellular immunity of 5 Mycobacterium tuberculosis recombinant proteins and their compositions was evaluated. Method: A total of 88 fresh venous blood from peripheral heparin anticoagulant population, 42 of which were from tuberculosis patients treated by The Tuberculosis Prevention and Treatment Center of Changping District, Beijing, and 46 of healthy volunteers were provided by the Infection Diseases of Chinese Center for Disease Control and Prevention. Healthy volunteers without a history of tuberculosis exposure and any clinical signs and symptoms. Using the Mycobacterium tuberculosis standard strain H37Rv DNA as a template, complete genes of the selected 5 recombinant proteins Rv3874, Rv3875, Rv2031c, Rv1411c and Rv3418c by PCR amplified; 5 recombinant proteins were cloned, expressed and purified as stimulants by genetic recombination and protein purification techniques, and the effector T cell enzyme-linked immunospot assay (ELISPOT) was used to detect cellular immunity in the population. Results: The recombinant proteins Rv3874, Rv3875, Rv2031c, Rv1411c and Rv3418c were successfully cloned, expressed and purified; And the sensitivities were 50.00%, 71.43%, 69.04%, 73.81% and 76.19%, and the specificities were 86.96%, 76.09%, 71.74%, 39.13% and 36.96%. In addition, the positive predictive value, negative predictive value, area under the curve and Youden index were 52.46% to 77.78%, 62.96% to 74.47%, 0.511 to 0.754 and 0.129 to 0.475, respectively. Except for Rv1411c and Rv3418c, the number of spot-forming cell (SFC) detected by Rv3874, Rv3875 and Rv2031c in tuberculosis patients was higher than healthy volunteers, and the differences were statistically significant (P<0.001). Among the 26 compositions composed of 5 recombinant proteins, the sensitivity was 80.95% to 95.24%, and the specificity was 68.89% to 24.44%. As the number of recombinant proteins in the composition increases, the sensitivity gradually increased, but the specificity decreased. Conclusion: The recombinant proteins of Mycobacterium tuberculosis Rv3874, Rv3875 and Rv2031c have strong ability to stimulate T cells to produce immune response, and have certain antigenicity. The efficacy of Rv1411c and Rv3418c alone as diagnostic antigens is not ideal, and the composition composed of multi-component antigens has certain application value. This article provides experimental evidence for the immune diagnosis of tuberculosis and the preparation of new anti-tuberculosis vaccines.
Collapse
Affiliation(s)
- Y H Yan
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - M C Li
- State Key Laboratory for Infection Diseases Prevention and Control/National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infection Diseases Prevention and Control/National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - T Y Xiao
- Guangdong Key Lab for Diagnosis & Treatment of Emerging Infectious Diseases, Shenzhen Third People's Hospital, Southern University of Science and Technology, Guangzhou 518112, China
| | - N Li
- State Key Laboratory for Infection Diseases Prevention and Control/National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Lou
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K L Wan
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| |
Collapse
|
25
|
Liu HC, Kijanka P, Urban MW. Four-dimensional (4D) phase velocity optical coherence elastography in heterogeneous materials and biological tissue. Biomed Opt Express 2020; 11:3795-3817. [PMID: 33014567 PMCID: PMC7510894 DOI: 10.1364/boe.394835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/21/2020] [Accepted: 06/09/2020] [Indexed: 05/03/2023]
Abstract
The variations of mechanical properties in soft tissues are biomarkers used for clinical diagnosis and disease monitoring. Optical coherence elastography (OCE) has been extensively developed to investigate mechanical properties of various biological tissues. These methods are generally based on time-domain data and measure the time-of-flight of the localized shear wave propagations to estimate the group velocity. However, there is considerable information that can be obtained from examining the mechanical properties such as wave propagation velocities at different frequencies. Here we propose a method to evaluate phase velocity, wave velocity at various frequencies, in four-dimensional space (x, y, z, f), called 4D-OCE phase velocity. The method enables local estimates of the phase velocity of propagating mechanical waves in a medium. We acquired and analyzed data with this method from a homogeneous reference phantom, a heterogeneous phantom material with four different excitation cases, and ex vivo porcine kidney tissue. The 3D-OCE group velocity was also estimated to compare with 4D-OCE phase velocity. Moreover, we performed numerical simulation of wave propagations to illustrate the boundary behavior of the propagating waves. The proposed 4D-OCE phase velocity is capable of providing further information in OCE to better understand the spatial variation of mechanical properties of various biological tissues with respect to frequency.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, 200
First St SW, Rochester, MN 55905, USA
| | - Piotr Kijanka
- Department of Radiology, Mayo Clinic, 200
First St SW, Rochester, MN 55905, USA
- Department of Robotics and Mechatronics,
AGH University of Science and Technology, Al. Mickiewicza 30, Krakow
30-059, Poland
| | - Matthew W. Urban
- Department of Radiology, Mayo Clinic, 200
First St SW, Rochester, MN 55905, USA
- Department of Physiology and Biomedical
Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905,
USA
| |
Collapse
|
26
|
Liu HC, Gang EJ, Kim HN, Ruan Y, Ogana H, Wan Z, Bönig H, Shung KK, Kim YM. Characterizing the Motility of Chemotherapeutics-Treated Acute Lymphoblastic Leukemia Cells by Time-Lapse Imaging. Cells 2020; 9:E1470. [PMID: 32560076 PMCID: PMC7349263 DOI: 10.3390/cells9061470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 11/16/2022] Open
Abstract
Drug resistance is an obstacle in the therapy of acute lymphoblastic leukemia (ALL). Whether the physical properties such as the motility of the cells contribute to the survival of ALL cells after drug treatment has recently been of increasing interest, as they could potentially allow the metastasis of solid tumor cells and the migration of leukemia cells. We hypothesized that chemotherapeutic treatment may alter these physical cellular properties. To investigate the motility of chemotherapeutics-treated B-cell ALL (B-ALL) cells, patient-derived B-ALL cells were treated with chemotherapy for 7 days and left for 12 h without chemotherapeutic treatment. Two parameters of motility were studied, velocity and migration distance, using a time-lapse imaging system. The study revealed that compared to non-chemotherapeutically treated B-ALL cells, B-ALL cells that survived chemotherapy treatment after 7 days showed reduced motility. We had previously shown that Tysabri and P5G10, antibodies against the adhesion molecules integrins α4 and α6, respectively, may overcome drug resistance mediated through leukemia cell adhesion to bone marrow stromal cells. Therefore, we tested the effect of integrin α4 or α6 blockade on the motility of chemotherapeutics-treated ALL cells. Only integrin α4 blockade decreased the motility and velocity of two chemotherapeutics-treated ALL cell lines. Interestingly, integrin α6 blockade did not affect the velocity of chemoresistant ALL cells. This study explores the physical properties of the movements of chemoresistant B-ALL cells and highlights a potential link to integrins. Further studies to investigate the underlying mechanism are warranted.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA;
| | - Eun Ji Gang
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA; (E.J.G.); (H.N.K.); (Y.R.); (H.O.); (Z.W.)
| | - Hye Na Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA; (E.J.G.); (H.N.K.); (Y.R.); (H.O.); (Z.W.)
| | - Yongsheng Ruan
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA; (E.J.G.); (H.N.K.); (Y.R.); (H.O.); (Z.W.)
| | - Heather Ogana
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA; (E.J.G.); (H.N.K.); (Y.R.); (H.O.); (Z.W.)
| | - Zesheng Wan
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA; (E.J.G.); (H.N.K.); (Y.R.); (H.O.); (Z.W.)
| | - Halvard Bönig
- Goethe University School of Medicine, Institute for Transfusion Medicine and Immunohematology and German Red Cross Blood Service BaWuHe, 60528 Frankfurt, Germany;
- Division of Hematology, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98198, USA
| | - K. Kirk Shung
- Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA;
| | - Yong-Mi Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA 90027, USA; (E.J.G.); (H.N.K.); (Y.R.); (H.O.); (Z.W.)
| |
Collapse
|
27
|
Lim HG, Liu HC, Yoon CW, Jung H, Kim MG, Yoon C, Kim HH, Shung KK. Investigation of cell mechanics using single-beam acoustic tweezers as a versatile tool for the diagnosis and treatment of highly invasive breast cancer cell lines: an in vitro study. Microsyst Nanoeng 2020; 6:39. [PMID: 34567652 PMCID: PMC8433385 DOI: 10.1038/s41378-020-0150-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 02/10/2020] [Accepted: 02/18/2020] [Indexed: 05/27/2023]
Abstract
Advancements in diagnostic systems for metastatic cancer over the last few decades have played a significant role in providing patients with effective treatment by evaluating the characteristics of cancer cells. Despite the progress made in cancer prognosis, we still rely on the visual analysis of tissues or cells from histopathologists, where the subjectivity of traditional manual interpretation persists. This paper presents the development of a dual diagnosis and treatment tool using an in vitro acoustic tweezers platform with a 50 MHz ultrasonic transducer for label-free trapping and bursting of human breast cancer cells. For cancer cell detection and classification, the mechanical properties of a single cancer cell were quantified by single-beam acoustic tweezers (SBAT), a noncontact assessment tool using a focused acoustic beam. Cell-mimicking phantoms and agarose hydrogel spheres (AHSs) served to standardize the biomechanical characteristics of the cells. Based on the analytical comparison of deformability levels between the cells and the AHSs, the mechanical properties of the cells could be indirectly measured by interpolating the Young's moduli of the AHSs. As a result, the calculated Young's moduli, i.e., 1.527 kPa for MDA-MB-231 (highly invasive breast cancer cells), 2.650 kPa for MCF-7 (weakly invasive breast cancer cells), and 2.772 kPa for SKBR-3 (weakly invasive breast cancer cells), indicate that highly invasive cancer cells exhibited a lower Young's moduli than weakly invasive cells, which indicates a higher deformability of highly invasive cancer cells, leading to a higher metastasis rate. Single-cell treatment may also be carried out by bursting a highly invasive cell with high-intensity, focused ultrasound.
Collapse
Affiliation(s)
- Hae Gyun Lim
- Department of Creative IT Engineering, Pohang University of Science and Technology, Pohang, 37673 Republic of Korea
| | - Hsiao-Chuan Liu
- NIH Resource Center for Medical Ultrasonic Transducer Technology and Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Chi Woo Yoon
- NIH Resource Center for Medical Ultrasonic Transducer Technology and Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Hayong Jung
- NIH Resource Center for Medical Ultrasonic Transducer Technology and Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Min Gon Kim
- NIH Resource Center for Medical Ultrasonic Transducer Technology and Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| | - Changhan Yoon
- Department of Biomedical Engineering, Inje University, Gimhae, Gyeongnam 50834 Republic of Korea
| | - Hyung Ham Kim
- Department of Creative IT Engineering, Pohang University of Science and Technology, Pohang, 37673 Republic of Korea
| | - K. Kirk Shung
- NIH Resource Center for Medical Ultrasonic Transducer Technology and Department of Biomedical Engineering, University of Southern California, Los Angeles, CA 90089 USA
| |
Collapse
|
28
|
Chen R, Li MC, Zhao LL, Zhao XQ, Liu HC, Liu ZG, Lu Y, Deng YL, Chen ZX, Wan KL, Yuan XQ. [Analysis on drug sensitivity spectrum of 167 multidrug-resistant Mycobacterium tuberculosis in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:764-769. [PMID: 32447922 DOI: 10.3760/cma.j.cn112338-20191121-00823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the drugs-sensitivity spectrum of multidrug-resistant tuberculosis (MDR-TB) in China and provide a scientific evidence for the drug selection in clinical therapy and the control of MDR-TB. Methods: A total of 167 strains of MDR-TB were included in this study. Every strain was genotyped by lysX gene sequencing and their sensitivity to 13 different anti-TB drugs was tested by using MicroDST(TM) and BACTEC(TM) MGIT 960(TM) liquid-culturing method. The association between drug resistance and genotypes as well as cross drug resistance was also analyzed. The results were analyzed by means of the comparison of enumeration data between two groups with χ(2) test. Results: The overall resistance rate of 167 MDR-TB strains to 11 anti-TB drugs, except isoniazide and rifampicin, was 95.81%, the rates of pre-extensive drug-resistance (pre-XDR) and extensive drug-resistance were 31.14%(52/167) and 6.59% (11/167), respectively. The streptomycin resistance rate of Beijing genotypes was significantly higher than that of the non-Beijing genotypes ( χ(2)=30.682, P<0.05), while the pre-XDR proportion in Beijing genotypes was lower than that in non-Beijing genotypes (χ(2)=5.332, P<0.05). The resistance rates of Ofloxacin and Pyrazinamide in the modern Beijing genotype were significantly higher than those in classical ones (χ(2)=4.105 and χ(2)=3.912, P<0.05). In addition, the cross-resistance rate to rifampicin and rifabutin was 86.23%. A significant difference in drug-resistance rate to rifabutin was seen among groups with different levels of rifampicin resistance (χ(2)=45.912, P<0.05). There was positive correlation not only between ofloxac resistance and moxifloxac resistance, but also between amikacin resistance and kanamycin resistance, with the coefficient of 0.87 and 0.91, respectively. Conclusions: In this study, we observed that there were high incidences of the resistance to 11 anti-TB drugs in 167 clinical MDR-TB strains and the cross resistance phenomena between drugs of the same type were quite serious. The majority of MDR-TB strains belonged to Beijing genotype, which was highly associated with streptomycin resistance.
Collapse
Affiliation(s)
- R Chen
- School of Public Health, University of South China, Hengyang 421001, China; State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M C Li
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L L Zhao
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Q Zhao
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z G Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Lu
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - Y L Deng
- School of Public Health, University of South China, Hengyang 421001, China; State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z X Chen
- School of Public Health, University of South China, Hengyang 421001, China; State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - K L Wan
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Q Yuan
- School of Public Health, University of South China, Hengyang 421001, China
| |
Collapse
|
29
|
Gao M, Yang TT, Li GL, Chen R, Liu HC, Gao Q, Wan KL, Feng SD. [Analysis on drug resistance-associated mutations of multi-drug resistant Mycobacterium tuberculosis based on whole-genome sequencing in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:770-775. [PMID: 32447923 DOI: 10.3760/cma.j.cn112338-20191111-00800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the resistance mutational profiles of multi-drug resistant Mycobacterium tuberculosis in China and the correlation between major mutation types and genotypes based on the whole-genome sequencing data. Methods: Search and download of the genome-wide sequencing data of M. tuberculosis published in China by August 2019 on NCBI database were conducted. Mutation frequency of drug resistance-related gene loci based on whole-genome sequencing was used to predict the molecular susceptibility of strains, and the correlation between mutation types and genotypes was analyzed. Results: According to the results of molecular resistance and susceptibility profiles, 1 024 MDR strains were identified from 2 019 M. tuberculosis strains. The major mutation types of resistance-related genes to common drugs were katG S315T (73.2%, isoniazid), rpoB S450L (63.1%, rifampicin), rpsL K43R (70.0%, streptomycin), embB M306V (37.4%, ethambutol), pncA_promoter T (-11)C (7.9%, pyrazinamide), gyrA A90V (32.3%, fluoroquinolones), rrs A1401G (67.7%, second-line injection drugs), fabG1_promoter C (-15) T (87.0%, Ethionamide), folC I43T (30.4%, P-aminosalicylic acid). Among them, the frequencies of katG S315T, embB M306V, rpsL K43R, gyrA A90V in lineage 2 were significantly higher than those in lineage 4, and folC I43T was only found in lineage 2. The proportion of katG S315T was significantly higher in the ancient Beijing genotype compared to the modern genotype, in contrast, the proportion of rpsL K43R was significantly higher in modern Beijing genotype, the differences were significant (all P<0.05). Conclusions: The results showed the main mutation types of resistance-related genes of MDR strains to many commonly used anti-tuberculosis drugs in China based on whole-genome sequencing, providing a basis for the development of sensitive and specific rapid molecular detection methods. At the same time, it was also found that the major mutation types of MDR-related genes were related to the genotype of the strains.
Collapse
Affiliation(s)
- M Gao
- School of Public Health, University of South China, Hengyang 421001, China
| | - T T Yang
- School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - G L Li
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - R Chen
- School of Public Health, University of South China, Hengyang 421001, China
| | - H C Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Q Gao
- School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - K L Wan
- State Key Laboratory for Infectious Diseases Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S D Feng
- School of Public Health, University of South China, Hengyang 421001, China
| |
Collapse
|
30
|
Liu HC, Kijanka P, Urban MW. Fluid surface tension evaluation using capillary wave measurement with optical coherence tomography. AIP Adv 2020; 10:055121. [PMID: 32477829 PMCID: PMC7239663 DOI: 10.1063/1.5143935] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
The surface tension of biological fluids is an important parameter because the mechanical properties of fluids are closely linked with hematological diseases and other pathophysiologies. Capillary waves are associated with fluid mechanical properties. Here, we propose a method that utilizes the acoustic radiation force (ARF) to generate propagating waves and optical coherence tomography (OCT) to measure the wave motion. This ARF-OCT method is capable of evaluating the surface tension of fluids, water and porcine whole blood in this study, based on the dispersion relation of capillary waves. Two-dimensional Fourier transforms were used to decompose frequency components of wave motion images to obtain a k-space representation and estimate the wave phase velocity. The phase velocity of capillary waves was obtained from the experimental results and compared to theoretical calculations. The surface tensions of water and porcine whole blood were determined from the experimental results. We first report that capillary waves measured with OCT can be a new promising modality for measuring the surface tension of fluids. The proposed method could be used to differentiate actual pathologic fluids or blood from those taken from healthy subjects and as a biomarker in future biomedical applications.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, Minnesota 55905, USA
| | - Piotr Kijanka
- Department of Robotics and Mechatronics, AGH University of Science and Technology, Al. Mickiewicza 30, Krakow 30-059, Poland
| | | |
Collapse
|
31
|
Liu HC, Gang EJ, Kim HN, Abdel-Azim N, Chen R, Abdel-Azim H, Shung KK, Kim YM. Integrin Antibody Decreases Deformability of Patient-Derived Pre-B Acute Lymphocytic Leukemia Cells as Measured by High-Frequency Acoustic Tweezers. J Ultrasound Med 2020; 39:589-595. [PMID: 31633840 PMCID: PMC7493593 DOI: 10.1002/jum.15139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 09/03/2019] [Indexed: 05/11/2023]
Abstract
OBJECTIVES This article reports a study of cell mechanics in patient-derived (primary) B-cell acute lymphocytic leukemia (ALL) cells treated with antibodies against integrins. Leukemia cell adhesion to stromal cells mediates chemotherapeutic drug resistance, also known as cell adhesion-mediated chemotherapeutic drug resistance. We have previously shown that antibodies against integrin α4 and α6 adhesion molecules can de-adhere ALL cells from stromal cells or counter-receptors. Because drug-resistant cells are more deformable, as evaluated by single-beam acoustic tweezers, we hypothesized that changes in cell mechanics might contribute to the de-adhesive effect of integrin-targeting antibodies. METHODS In this study, the deformability of primary pre-B ALL cells was evaluated by single-beam acoustic tweezers after treatments with the de-adhering antibody Tysabri or P5G10 against integrin α4 and α6 adhesion molecules. RESULTS We demonstrated that primary ALL cells treated with P5G10 expressed decreased deformability compared with immunoglobulin G1 -treated control cells (P < .05). Tysabri did not show an effect on deformability (P > .05). CONCLUSIONS These results suggest that decreased deformability is associated with an integrin α6 blockade. Further assessments of the functional roles of deformability and integrin blockades in B-ALL cell drug resistance and deformability, respectively, are necessary.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Biomedical Engineering and National Institutes of Health Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| | - Eun Ji Gang
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| | - Hye Na Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| | - Nour Abdel-Azim
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| | - Ruimin Chen
- Department of Biomedical Engineering and National Institutes of Health Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA
| | - Hisham Abdel-Azim
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| | - K Kirk Shung
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| | - Yong-Mi Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood, and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, Los Angeles, California, USA
| |
Collapse
|
32
|
Liu HC, Kijanka P, Urban MW. Acoustic radiation force optical coherence elastography for evaluating mechanical properties of soft condensed matters and its biological applications. J Biophotonics 2020; 13:e201960134. [PMID: 31872545 PMCID: PMC7243171 DOI: 10.1002/jbio.201960134] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 05/11/2023]
Abstract
Evaluating mechanical properties of biological soft tissues and viscous mucus is challenging because of complicated dynamic behaviors. Soft condensed matter models have been successfully used to explain a number of dynamical behaviors. Here, we reported that optical coherence elastography (OCE) is capable of quantifying mechanical properties of soft condensed matters, micellar fluids. A 7.5 MHz focused transducer was utilized to generate acoustic radiation force exerted on the surface of soft condensed matters in order to produce Rayleigh waves. The waves were recorded by optical coherence tomography (OCT). The Kelvin-Voigt model was adopted to evaluate shear modulus and loss modulus of soft condensed matters. The results reported that various concentrations of micellar fluids can provide reasonable ranges of elasticity from 65.71 to 428.78 Pa and viscosity from 0.035 to 0.283 Pa·s, which are close to ranges for actual biological samples, like mucus. OCE might be a promising tool to differentiate pathologic mucus samples from healthy cases as advanced applications in the future.
Collapse
Affiliation(s)
| | - Piotr Kijanka
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
- Department of Robotics and Mechatronics, AGH University of Science and Technology, Poland
| | - Matthew W Urban
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
33
|
Liu HC, Fitzgerald S, Rizvi A, Caracena T, Doyle KM, Kadirvel R, Kallmes DF, Brinjikji W, Urban MW. Abstract TP44: Evaluating Mechanical Properties of Human Blood Clot Analogues Using Ultrasound-mediated Optical Coherence Elastography. Stroke 2020. [DOI: 10.1161/str.51.suppl_1.tp44] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ischemic stroke results from thrombus becoming lodged in a vessel in the cerebrovascular circulation. The constituents of the thrombus can vary widely and have direct effects on the mechanical properties of the thrombus. Thrombectomy procedures could potentially be improved if the mechanical properties of the thrombus could be determined prior to treatment. In the study, we developed a new non-contact method associated with Rayleigh wave propagations for evaluating mechanical properties of human clotted blood, referred to as ultrasound-mediated optical coherence elastography (UOCE). Due to clot mechanical properties being associated with fibrin and platelet content, eight different clot analogues with varying fibrin/platelets concentrations, from 0.6% (control group) to 19.0%, were produced, and the clot analog in each concentration was repeatedly measured five times. A highly focused transducer with a center frequency of 7.5 MHz was used to generate acoustic radiation forces exerted on the surface of clotted blood to induce Rayleigh wave propagations. The transducer was driven by a 50 dB radio frequency amplifier a 4 ms pulse which was repeated at a rate of 19 Hz. The optical coherence tomography (OCT) acquisition was set to 50 lateral positions and 4000 A-scans for each lateral position at a 76 kHz scan rate for total acquisition time of 52.6 ms. The results demonstrated that the Rayleigh wave group velocities positively correlated with the concentrations of fibrin/platelets. The group velocities ranged from 0.78 ± 0.02 m/s for 0.6% fibrin/platelets and increased to 2.42 ± 0.06 m/s at a fibrin/platelets concentration of 19.0%. There are statistically significant difference (
p
<0.05) between control group and all clot analogues with a fibrin/platelets concentration of greater than 2.3%. In conclusion, we propose UOCE as a novel approach capable of evaluating mechanical properties of human blood clots based on Rayleigh wave propagation. This sensitive method can be used for the evaluation of the mechanical properties of human blood clot analogues and thrombectomy samples.
Collapse
Affiliation(s)
| | | | - Asim Rizvi
- Radiology, Mayo Clinic Rochester, Rochester, MN
| | | | - Karen M Doyle
- Physiology, CÚRAM – Cntr for Rsch in Med Devices, Galway, Ireland
| | | | | | | | - Matthew W Urban
- Physiology and Biomedical Engineering, Mayo Clinic Rochester, Rochester, MN
| |
Collapse
|
34
|
Liu HC, Kijanka P, Urban MW. Optical coherence tomography for evaluating capillary waves in blood and plasma. Biomed Opt Express 2020; 11:1092-1106. [PMID: 32206401 PMCID: PMC7041467 DOI: 10.1364/boe.382819] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 05/18/2023]
Abstract
Capillary waves are associated with fluid mechanical properties. Optical coherence tomography (OCT) has previously been used to determine the viscoelasticity of soft tissues or cornea. Here we report that OCT was able to evaluate phase velocities of capillary waves in fluids. The capillary waves of water, porcine whole blood and plasma on the interfacial surface, air-fluid in this case, are discussed in theory, and phase velocities of capillary waves were estimated by both our OCT experiments and theoretical calculations. Our experiments revealed highly comparable results with theoretical calculations. We concluded that OCT would be a promising tool to evaluate phase velocities of capillary waves in fluids. The methods described in this study could be applied to determine surface tensions and viscosities of fluids for differentiating hematological diseases in the future potential biological applications.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Piotr Kijanka
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Department of Robotics and Mechatronics, AGH University of Science and Technology, Al. Mickiewicza 30, Krakow 30-059, Poland
| | - Matthew W. Urban
- Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| |
Collapse
|
35
|
Liu HC, Li C, Zhang F, Wang XS, Zhang C, Luo HX, Song J, Yu PW, Tang B. [Analysis on the technical characteristics and clinical efficacy of robotic-assisted intersphincteric resection for patients with low rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 22:1137-1143. [PMID: 31874529 DOI: 10.3760/cma.j.issn.1671-0274.2019.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the technical characteristics and short-term clinical efficacy of robotic-assisted intersphincteric resection (ISR) for patients with low rectal cancer. Methods: A retrospective cohort study was used. Inclusion criteria: (1) rigid colonoscopy showed lower margin of the tumor ≤5 cm from the anal verge; (2) preoperative rectal MRI or endorectal ultrasound revealed staging T1-2, or T3 patients receiving concurrent chemoradiotherapy; (3) patients less than 70 years old with good function of anal sphincter before surgery; (4) no synchronous multiple primary carcinoma, and no distant metastasis; (5) the method of operation was agreed by the patient. Exclusion criteria: (1) T4 stage tumors; (2) sphincter dysfunction before operation; (3) recurrent tumors; (4) lower edge of tumors beyond the dentate line; (5) death due to non-rectal cancer during follow-up and unsatisfactory follow-up data. The clinical data of 21 patients with low rectal cancer meeting inclusion criteria undergoing robotic-assisted ISR at our department from January 2015 to June 2018 were collected. Parameters during and after operation were observed. Anorectal manometry was performed at 3, 6, and 12 months after the operation, and anal function was evaluated at 3, 6, and 12 months after the closure of the stoma by Kirwan classification and Wexner fecal incontinence score. The key steps of the operation are as follows: according to the principle of total mesorectal excision, the robot continued to enter into the levator ani hiatusdistally, and dissectin the sphincter space; according to the scope of sphincter resection, ISRwas divided into partial ISR, subtotal ISR, and total ISR; subtotal and total ISR usually needed to be combined with transanal pathway. The reconstruction of digestive tract was performed by double stapler anastomosis under laparoscope orhand-sewnanastomosis under direct vision, and preventive ileostomy was completed in the right lower abdomen. Results: Of 21 patients, 13 were male and 8 were female with mean age of (57.5±16.3) years. All the patients successfully completed the operation without conversion to laparotomy. Fourteen cases (66.7%) adopted partial ISR through complete transabdominal approach, 6 cases (28.6%) adopted the subtotal ISR through combined transabdominal and transanal approachs, and 1 case (4.8%) adopted the total ISR through the combined transabdominal and transanal approachs. The total operation time was (213.1±56.3) minutes, including (27.3±5.4) minutes for mechanical arm installation and (175.7±51.6) minutes for robotic operation. The amount of intraoperative hemorrhage was (62.8±23.2) ml, and no blood transfusion was performed in any patient. All patients underwent prophylactic ileostomy, and the stoma was closed 3-6 months after the operation. Except one case of anastomotic leakage, all other stomas were closed successfully. The postoperative hospitalization time was (7.6±2.2) days, and time to fluid intake was (3.3±0.9) days. One case of anastomotic leakage, one case of anastomotic stenosis, one case of inflammatory external hemorrhoids and one case of urinary retention occurred after surgery,and all of them were cured by conservative treatment. The mean diameter of tumors was (2.9±1.2) cm, and the number of harvested lymph node was 12.8 ± 3.3. In the whole group, the circumcision margin was negative, the proximal margin was (12.2 ± 2.1) cm, the distal margin was (1.1 ± 0.4) with all negative, and the R0 resection rate was 100%. The results of anorectal manometry showed that the preoperative rest pressure, rectal maximum squeeze pressure, initial sensory volume and maximum tolerated volume were (45.19±8.46) mmHg, (128.18±18.80) mmHg, (44.33±10.11) ml and (119.00±19.28) ml, respectively;these parameters reduced significantly 3 months after operation and they were (23.44±5.54) mmHg, (93.72±12.15) mmHg, (17.72±5.32) ml and (70.44±10.9) ml, respectively. The differences were statistically significant (all P<0.001). The resting pressure and the rectal maximum squeeze pressure returned to preoperative levels 12 months after operation, which were (39.33±6.64) mmHg and (120.58±16.47) mmHg, respectively (both P>0.05), while the initial sensory volume and the maximum tolerated volume failed to reach the preoperative state, which were (30.67±7.45) ml and (92.25±10.32) ml, respectively (both P<0.05). The patients were followed up for (22.1±10.6) months without local recurrence and distant metastasis. Eighteen patients were evaluated for anal function: Kirwan classification was grade I for 6 cases, grade II for 7 cases, grade III for 4 cases, and grade IV for 1 case; Wexner incontinence score was 8.6±0.8; 14 cases had good defecation control. Conclusion: The clinical efficacy of ISR with Da Vinci robot in the treatment of low rectal cancer is satisfactory.
Collapse
Affiliation(s)
- H C Liu
- Department of General Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Yan CQ, Wang RB, Liu HC, Jiang Y, Li MC, Yin SP, Xiao TY, Wan KL, Rang WQ. [Application of ARIMA model in predicting the incidence of tuberculosis in China from 2018 to 2019]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:633-637. [PMID: 31238610 DOI: 10.3760/cma.j.issn.0254-6450.2019.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Autoregressive integrated moving average (ARIMA) model was used to predict the incidence of tuberculosis in China from 2018 to 2019, providing references for the prevention and control of pulmonary tuberculosis. Methods: The monthly incidence data of tuberculosis in China were collected from January 2005 to December 2017. R 3.4.4 software was used to establish the ARIMA model, based on the monthly incidence data of tuberculosis from January 2005 to June 2017. Both predicted and actual data from July to December 2017 were compared to verify the effectiveness of this model, and the number of tuberculosis cases in 2018-2019 also predicted. Results: From 2005 to 2017, a total of 13 022 675 cases of tuberculosis were reported, the number of pulmonary tuberculosis patients in 2017 was 33.68% lower than that in 2005, and the seasonal character was obvious, with the incidence in winter and spring was higher than that in other seasons. According to the incidence data from 2005 to 2017, we established the model of ARIMA (0,1,2)(0,1,0)(12). The relative error between the predicted and actual values of July to December 2017 fitted by the model ranged from 1.67% to 6.80%, and the predicted number of patients in 2018 and 2019 were 789 509 and 760 165 respectively. Conclusion: The ARIMA (0, 1, 2)(0, 1, 0)(12) model well predicted the incidence of tuberculosis, thus can be used for short-term prediction and dynamic analysis of tuberculosis in China, with good application value.
Collapse
Affiliation(s)
- C Q Yan
- School of Public Health, University of South China, Hengyang 421001, China
| | - R B Wang
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Jiang
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M C Li
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - S P Yin
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - T Y Xiao
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - K L Wan
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W Q Rang
- School of Public Health, University of South China, Hengyang 421001, China
| |
Collapse
|
37
|
Liu HC. [Development and prospect of oral esthetic medicine with Chinese characteristics]. Zhonghua Kou Qiang Yi Xue Za Zhi 2019; 54:361-362. [PMID: 31177670 DOI: 10.3760/cma.j.issn.1002-0098.2019.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100083, China
| |
Collapse
|
38
|
Wang H, Liu Y, Liu HC, Han D, Feng HL. [Detection and functional analysis of BMP2 gene mutation in patients with tooth agenesis]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:9-15. [PMID: 30773537 DOI: 10.19723/j.issn.1671-167x.2019.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To screen for BMP2 mutation with functional impact in patients with congenital tooth agenesis and to make oral and skeletal phenotype record and functional analysis with in vitro experiments. METHODS We enrolled eighteen patients with congenital tooth agenesis. The medical and dental history was collected,and clinical and dental examinations including the X-ray examination of oral-facial and skeletal bone were performed for the phenotypic analysis. Blood samples were collected to extract DNA and whole exome sequencing was conducted. The genes involved in oral-facial development and congenital skeletal diseases were investigated for mutation screening. The mutations with functional impact were then investigated. In one patient, the BMP2 mutation with putative functional impact was selected for functional analysis. Wild type and mutant BMP2 plasmids with green fluorescent protein (GFP) tag were constructed and transfected into HEK293T cells. Subcellular protein distribution was observed under laser scanning confocal microscope. The activation of downstream SMAD1/5/9 phosphorylation by BMP2 was detected by Western blotting to investigate the functional impact and genetic pathogenicity. RESULTS BMP2 mutation NM_001200.3:c.393A>T (p.Arg131Ser), rs140417301 was detected in one patient with congenital tooth agenesis, while for other genes involved in oral-facial development and congenital skeletal diseases, no functionally significant mutation was found. The proband's parents didn't carry this mutation. The father had normal dentition, while the mother lacked one premolar, and both the parents showed normal palate and maxilla. The patient also had maxillary hypoplasia in both sagittal and coronal planes, palatal dysmorphology, and malocclusion, and was diagonsed with osteopenia after the X-ray examnination of his skeletal bone. Functional analysis showed this mutation had normal subcelluar localization but reduced phosphorylation of SMAD1/5/9 (reduction by 32%, 22%, and 27% in three independent replicates). Taken together with family co-segregation, this mutaion was considered as "likely pathogenic". CONCLUSION BMP2 mutation c.393A>T (p. Arg131Ser) affects bone morphogenetic protein signaling activity, and may affect the number of teeth, growth of maxilla and palate, and bone mineral density.
Collapse
Affiliation(s)
- H Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H C Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Han
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| |
Collapse
|
39
|
Liu HC, Gang EJ, Kim HN, Lim HG, Jung H, Chen R, Abdel-Azim H, Shung KK, Kim YM. Characterizing Deformability of Drug Resistant Patient-Derived Acute Lymphoblastic Leukemia (ALL) Cells Using Acoustic Tweezers. Sci Rep 2018; 8:15708. [PMID: 30356155 PMCID: PMC6200731 DOI: 10.1038/s41598-018-34024-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 10/05/2018] [Indexed: 12/31/2022] Open
Abstract
The role of cell mechanics in cancer cells is a novel research area that has resulted in the identification of new mechanisms of therapy resistance. Single beam acoustic (SBA) tweezers are a promising technology for the quantification of the mechanical phenotype of cells. Our previous study showed that SBA tweezers can be used to quantify the deformability of adherent breast cancer cell lines. The physical properties of patient-derived (primary) pre-B acute lymphoblastic leukemia (ALL) cells involved in chemotherapeutic resistance have not been widely investigated. Here, we demonstrate the feasibility of analyzing primary pre-B ALL cells from four cases using SBA tweezers. ALL cells showed increased deformability with increasing acoustic pressure of the SBA tweezers. Moreover, ALL cells that are resistant to chemotherapeutic drugs were more deformable than were untreated ALL cells. We demonstrated that SBA tweezers can quantify the deformability of nonadherent leukemia cells and discriminate this mechanical phenotype in chemotherapy-resistant leukemia cells in a contact- and label-free manner.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, 1042 Downey Way, Los Angeles, CA, 90089, USA.,Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, 4650 Sunset Blvd, Los Angeles, CA, 90027, USA
| | - Eun Ji Gang
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, 4650 Sunset Blvd, Los Angeles, CA, 90027, USA
| | - Hye Na Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, 4650 Sunset Blvd, Los Angeles, CA, 90027, USA
| | - Hae Gyun Lim
- Department of Creative IT Engineering and Future IT Innovation Laboratory, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Hayong Jung
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, 1042 Downey Way, Los Angeles, CA, 90089, USA
| | - Ruimin Chen
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, 1042 Downey Way, Los Angeles, CA, 90089, USA
| | - Hisham Abdel-Azim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, 4650 Sunset Blvd, Los Angeles, CA, 90027, USA
| | - K Kirk Shung
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, 1042 Downey Way, Los Angeles, CA, 90089, USA.
| | - Yong-Mi Kim
- Department of Pediatrics, Division of Hematology, Oncology, Blood and Marrow Transplantation, Children's Hospital Los Angeles, University of Southern California, 4650 Sunset Blvd, Los Angeles, CA, 90027, USA.
| |
Collapse
|
40
|
Liu HC, Wang W, Li Y, Dong H, Sun BW, Xu Y, Zhao JW, Zhang JL, Zhang TM, Kang J. [The diagnosis and treatment of traumatic optic nerve neuropathy combined with carotid artery injury]. Zhonghua Yi Xue Za Zhi 2018; 98:3183-3186. [PMID: 30392279 DOI: 10.3760/cma.j.issn.0376-2491.2018.39.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To discuss the diagnosis and treatment strategy of traumatic optic nerve neuropathy (TON) combined with carotid artery injury. Methods: Retrospective analyses were performed 397 cases of TON at Neurosurgery department of Beijing Tongren Hospital, Capital Medical University (CMU), from January 2016 to December 2017.The clinical experience was concluded. Results: 9 cases of Traumatic Pseudo Aneurysm (TPA) and 16 cases of Traumatic Carotid Artery-Cavernous Sinus Fistula (TCCF) were found.7 cases of TPA were treated by covered stent, the other 2 cases were treated by detachable balloons.11 cases of TCCF were treated by detachable balloons, and 5 cases of fistulas were found spontaneously closed by DSA after 1-3 months.There was no disability rate and mortality in this study. Conclusion: TON combined with carotid artery injury was a critical situation, and sometime without obvious symptoms and sign, which was easily miss diagnosed.It should be with more concern in diagnosing and treating in such cases, to avoid disability rate and mortality.
Collapse
|
41
|
Li F, Liu Y, Liu HC, Feng HL. [Genetic variants analysis and histological observation of teeth in a patient with hereditary opalescent dentin]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:666-671. [PMID: 30122769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To analyze the clinical characteristics and the genetic cause of a Chinese patient with hereditary opalescent dentin, and to make an observation of the histologic and elemental features of the affected teeth. METHODS We enrolled a patient affected with hereditary opalescent dentin. The medical history was collected and clinical examinations were performed for the phenotypic analyses. The blood sample was collected for DNA extraction and PCRs of the coding sequence of DSPP were done for sanger sequencing. The teeth samples were collected for histological evaluation and elemental analysis. RESULTS The patient showed typical clinical manifestations of opalescent dentin and had enamel dysplasia and skeletal class III malocclusion. Several polymorphisms (c.727G>A, c.897A>G, c.2053_2054ins18bp, c.2548G>A, c.2645_2646ins9bp, c.2706T>C, c.2878A>G, c.3004A>G, c.3069_3086del18bp, c.3249A>C, c.3264T>C, c.3266_3400del135bp, c.3418A>G, c.3454G>A, c.3461_3462ins18bp, c.3606C>T) but no pathogenic mutations were identified in DSPP. The histological analyses of the patient's teeth showed characteristic abnormalities that were significantly different from normal teeth. The dentin tubules of the affected teeth were decreased in number and sparsed in arrangement, while in the control teeth, they were more regular. The enamel-dentin junction of the affected teeth was abnormal in its less scallopped outline compared with the control teeth under the scanning electronic microscopy. The Mg proportion of the patient's teeth (0.615 0%±0.261 6%) was lower than that of the control teeth (1.283 3%±0.322 1%), the P value was 0.040. The Ca proportion was the higher compared with the control teeth (34.865 0%±0.388 9% vs. 29.221 7%±2.248 4%), the P value was 0.015. The Ca/P ration of the patient's teeth was 1.981 2±0.019 3, which was higher than that of control teeth (1.775 9±0.111 6), the P value was 0.049. The differences of Mg, Ca proportion and Ca/P ration between the affected teeth and the control teeth were significant. The C and O proportion of the patient's teeth were lower and the P proportion was higher compared with the control teeth, however, the differences were not significant. CONCLUSION Our study of clinical manifestation analysis, genetic variants sequencing and histological observation has enlarged the phenotypic spectrum of hereditary opalescent dentin, and the genetic and histological results would contribute to further studies.
Collapse
Affiliation(s)
- F Li
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Ora Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Ora Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H C Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Ora Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Ora Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| |
Collapse
|
42
|
Luo Q, Li SJ, Xiao TY, Li MC, Liu HC, Lou YL, Wan KL. [Cloning expression and serological evaluation on Mycobacterium tuberculosis four new antigens]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:514-518. [PMID: 29699049 DOI: 10.3760/cma.j.issn.0254-6450.2018.04.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the serological diagnostic value of Mycobacterium (M.) tuberculosis four new antigens Rv0432, Rv0674, Rv1566c and Rv1547. Methods:Rv0432, Rv0674, Rv1566c and Rv1547 were amplified from M. tuberculosis strain H37Rv genomic DNA by using PCR, among which Rv1547 was divided into two segments for amplification (Rv1547-1 and Rv1547-2). The segments were cloned into expression vector PET-32a while the recombinant proteins were purified by affinity chromatography. Serums were incubated with BL21 (DE3) proteins. Antibodies IgG against M. tuberculosis were tested with 151 serum samples (41 healthy people and 110 TB patients) by using ELISA. The diagnostic efficiency of antigens was analyzed by means of receiver operating characteristic curve. Difference of the objective proteins in TB patients and healthy controls was compared by t-test. Results: Recombinant antigens Rv0432, Rv0674, Rv1566c, Rv1547-1 and Rv1547-2 were successfully expressed and purified. Results from ELISA showed that the sensitivity, specificity, positive predictive value, negative predictive value, Youden index and area under the curve of Rv0432, Rv0674, Rv1566c, Rv1547-1 and Rv1547-2, as 43.64%-92.73%, 80.49%-92.68%, 0.92-0.94, 0.38-0.80, 0.363-0.732 and 0.649-0.915. All the objective proteins showed significantly higher antibody levels in TB patients, when compared to the healthy controls (P<0.000 1). Conclusion: The newly identified antigens Rv0432, Rv0674, Rv1566c, Rv1547-1 and Rv1547-2 all performed well when being used for TB serological diagnosis, thus were expected to be new candidate antigens used for TB diagnosis.
Collapse
Affiliation(s)
- Q Luo
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - S J Li
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - T Y Xiao
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M C Li
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Lou
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K L Wan
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China; State Key Laboratory for Infectious Diseases Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
43
|
Qiu L, Wang DC, Xu T, Cheng XQ, Sun Q, Hu YY, Liu HC, Lu SY, Yang GH, Wang ZJ. [Influence of gender, age and season on thyroid hormone reference interval]. Zhonghua Yi Xue Za Zhi 2018; 98:1582-1587. [PMID: 29886649 DOI: 10.3760/cma.j.issn.0376-2491.2018.20.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Using clinical "big data" , to investigate the factors that affect the levels of thyroid hormones, and to explore the partitioning criteria for reference intervals (RI) of these hormones. Methods: An observation study was conducted. Information of 107 107 individuals undergoing routine physical examination in Peking Union Medical College Hospital from September 1(st,) 2013 to August 31(st,) 2016 was collected, thyroid hormone of these subjects were detected. To explore the test results distribution and differences of TSH, FT4 and FT3 by gender and age; according to the seasonal division standard of China Meteorological Administration, the study period was divided into four seasons, and the seasonal fluctuation on TSH was analyzed.To define the appropriate partition by gender, age and season according to significant difference analysis. Results: In male and female, the distributions of TSH were 1.779(0.578-4.758), 2.023(0.420-5.343)mU/L, respectively, and the level of TSH in female was higher than in male (Z=-37.600, P<0.001). The distributions of FT4 were 0.127(0.098-0.162), 0.117(0.091-0.151) μg/L, the distributions of FT3 were 3.33(2.47-3.74), 3.01(2.35-3.57)ng/L. And the level of FT4, FT3 in female were significantly lower than in male (Z=-94.000, -154.600, all P<0.001). Furthermore, males were divided into two groups by 65 years old and female were divided by 50 years old, respectively, and the distributions of TSH in male and female of older group were 1.818(0.528-5.240), 2.111(0.348-5.735)mU/L, in younger group were 1.778(0.582-4.696), 1.991(0.427-5.316)mU/L. The level of TSH in older group was significantly higher than in younger group (Z=-2.269, -10.400, all P<0.05), and the distribution of TSH in older group was much wider than in younger. The distribution of whole in spring, summer and autumn was 1.869( 0.510-5.042)mU/L, in winter was 1.978(0.527-5.250) mU/L, and the difference between them had statistical significance (Z=-15.000, P<0.001). Conclusions: Gender and age significantly affect the serum levels of TSH, FT4, and FT3, the distribution of TSH in female and elder group are wider than in male, and that of FT4, FT3 are lower.Seasons significantly affect the serum TSH level, the peak value is observed in winter. There are obviously differences between "rough" RIs and manufacture recommended RIs. Each laboratory should establish reference intervals for thyroid hormones on the premise of appropriate grouping.
Collapse
Affiliation(s)
- L Qiu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Li WB, Ji LY, Xu DL, Liu HC, Zhao XQ, Wu YM, Wan KL. [Identification and drug susceptibility testing of Mycobacterium thermoresistibile and Mycobacterium elephantis isolated from a cow with mastitis]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:669-672. [PMID: 29860815 DOI: 10.3760/cma.j.issn.0254-6450.2018.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the etiological characteristics and drug susceptibility of Mycobacterium thermoresistibile and Mycobacterium elephantis isolated from a cow with mastitis and provide evidence for the prevention and control of infectious mastitis in cows. Methods: The milk sample was collected from a cow with mastitis, which was pretreated with 4% NaOH and inoculated with L-J medium for Mycobacterium isolation. The positive cultures were initially identified by acid-fast staining and multi-loci PCR, then Mycobacterium species was identified by the multiple loci sequence analysis (MLSA) with 16S rRNA, hsp65, ITS and SodA genes. The drug sensitivity of the isolates to 27 antibiotics was tested by alamar blue assay. Results: Two anti-acid stain positive strains were isolated from the milk of a cow with mastitis, which were identified as non-tuberculosis mycobacterium by multi-loci PCR, and multi-loci nucleic acid sequence analysis indicated that one strain was Mycobacterium thermoresistibile and another one was Mycobacterium elephantis. The results of the drug susceptibility test showed that the two strains were resistant to most antibiotics, including rifampicin and isoniazid, but they were sensitive to amikacin, moxifloxacin, levofloxacin, ethambutol, streptomycin, tobramycin, ciprofloxacin and linezolid. Conclusions:Mycobacterium thermoresistibile and Mycobacterium elephantis were isolated in a cow with mastitis and the drug susceptibility spectrum of the pathogens were unique. The results of the study can be used as reference for the prevention and control the infection in cows.
Collapse
Affiliation(s)
- W B Li
- Institution of Pathogenic Biology, Medical College, University of South China, Hengyang 421001, China
| | - L Y Ji
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Department of Laboratory Medicine, Shanghai East Hospital, Tongji University, Shanghai 200123, China
| | - D L Xu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Q Zhao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y M Wu
- Institution of Pathogenic Biology, Medical College, University of South China, Hengyang 421001, China
| | - K L Wan
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
45
|
Wang XX, Chen X, Li YQ, Xiao TY, Jiang Y, Li MC, Liu HC, Wan KL. [Identification and evaluation of T cell epitopes of Rv0585c from Mycobacterium tuberculosis]. Zhonghua Liu Xing Bing Xue Za Zhi 2017. [PMID: 28651408 DOI: 10.3760/cma.j.issn.0254-6450.2017.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the human T cell epitopes of Mycobacterium (M.) tuberculosis Rv0585c protein antigen and their immunogenicity and provide evidence for the development of specific tuberculosis immune diagnostic techniques and tuberculosis vaccine. Methods: We synthesized peptides from M. tuberculosis Rv0585c protein antigen predicted by TE-predict and IEDB human T cell epitope prediction tool. The cellular immunoreactivity of the predicted peptides was evaluated through ELISpot assay with the peripheral blood monouclear cells (PBMC) of clinical tuberculosis patients. In animal experiments, BALB/c mice were respectively immunized with high dose (100 μg/mice) and low dose (50 μg/mice) of the peptides of Rv0585c, at the same time, high dose (50 μg/mice) and low dose (20 μg/mice) of Ag85B protein were used in positive control group. The levels of IFN-γ, IL-2, IL-4 and IL-10 were tested with ELISA kit respectively. Results: By means of bioinformatics technique, 66 human T cell epitopes of Rv0585c were predicted, from which9 peptides concentrated epitopes were synthesized for the animal immune experiments. Peptides P10110, P10112 and P10117 were confirmed to be antigenic. The sensitivity and specificity of P10110, P10112 and P10117 were 14.00%, 12.00%, 6.00% and 100.00%, 100.00%, 97.96% respectively when they were used as diagnostic reagents of tuberculosis. The sensitivity and specificity were 22.00% and 97.96% when the epitopes were combined together. The results of animal immunity test showed that high levels of cytokines IFN-γ, IL-2, IL-4 and IL-10 were induced by high and low dose of P10110, and high levels of IFN-γ、IL-2 and IL-10 were induced by high and low dose of P10112, which were much higher than that in negative controls, respectively (P<0.001). Conclusion: Rv0585c, including its human T cell epitopes, has good immunogenicity and immunoreactivity, stimulating the body to produce a stronger cellular immune response and has better potential application value in cellular diagnosis of tuberculosis and the development of new type of tuberculosis vaccine.
Collapse
Affiliation(s)
- X X Wang
- State Key Laboratory for Communicable Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Chen
- School of Public Health, University of South China, Hengyang 421001, China
| | - Y Q Li
- School of Public Health, University of South China, Hengyang 421001, China
| | - T Y Xiao
- State Key Laboratory for Communicable Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Jiang
- State Key Laboratory for Communicable Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M C Li
- State Key Laboratory for Communicable Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H C Liu
- State Key Laboratory for Communicable Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - K L Wan
- State Key Laboratory for Communicable Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| |
Collapse
|
46
|
Pang Q, Zhou L, Jin H, Man ZR, Liu HC. Letter: non-alcoholic fatty liver disease and polycystic ovary syndrome-evidence for low vitamin D status contributing to the link. Aliment Pharmacol Ther 2017; 46:566-567. [PMID: 28776742 DOI: 10.1111/apt.14159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Q Pang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - L Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - H Jin
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Z R Man
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - H C Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| |
Collapse
|
47
|
Liu HC, Li Y, Chen R, Jung H, Shung KK. Single-Beam Acoustic Trapping of Red Blood Cells and Polystyrene Microspheres in Flowing Red Blood Cell Saline and Plasma Suspensions. Ultrasound Med Biol 2017; 43:852-859. [PMID: 28236533 DOI: 10.1016/j.ultrasmedbio.2016.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 12/01/2016] [Accepted: 12/09/2016] [Indexed: 06/06/2023]
Abstract
Single-beam acoustic tweezers (SBATs) represent a new technology for particle and cell trapping. The advantages of SBATs are their deep penetration into tissues, reduction of tissue damage and ease of application to in vivo studies. The use of these tools for applications in drug delivery in vivo must meet the following conditions: large penetration depth, strong trapping force and tissue safety. A reasonable penetration depth for SBATs in the development of in vivo applications was established in a previous study conducted in water with zero velocity. However, capturing objects in flowing fluid can provide more meaningful results. In this study, we investigated the capability of SBATs to trap red blood cells (RBCs) and polystyrene microspheres in flowing RBC suspensions. Two different types of RBC suspension were prepared in this work: an RBC phosphate-buffered saline (PBS) suspension and an RBC plasma suspension. The results indicated that SBATs successfully trapped RBCs and polystyrene microspheres in a flowing RBC PBS suspension with an average steady velocity of 1.6 cm/s in a 2-mm-diameter polyimide. Furthermore, SBATs were found able to trap RBCs in a flowing RBC PBS suspension at speeds as high as 7.9 cm/s in a polyimide tube, which is higher than the velocity in capillaries (0.03 cm/s) and approaches the velocity in arterioles and venules. Moreover, the results also indicated that polystyrene microspheres can be trapped in an RBC plasma suspension, where aggregation is observed. This work represents a step forward in using this tool in actual in vivo experimentation.
Collapse
Affiliation(s)
- Hsiao-Chuan Liu
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA; Hematology and Oncology, Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Ying Li
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA.
| | - Ruimin Chen
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA
| | - Hayong Jung
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA
| | - K Kirk Shung
- Department of Biomedical Engineering and NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California, USA.
| |
Collapse
|
48
|
Liu HC. [Discussion on the problems in the diagnosis and treatment of disc displacement of temporomandibular joint]. Zhonghua Kou Qiang Yi Xue Za Zhi 2017; 52:137-138. [PMID: 28279047 DOI: 10.3760/cma.j.issn.1002-0098.2017.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- H C Liu
- Institute of Stomatology, General Hospital of Chinese PLA, Beijing 100083, China
| |
Collapse
|
49
|
He HY, Liu Y, Han D, Liu HC, Bai BJ, Feng HL. [EDA mutation screening and phenotype analysis in patients with tooth agenesis]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:686-691. [PMID: 29263514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To screen the ectodysplasin A (EDA) gene mutation in the patients with non-syndromic tooth agenesis and ectodermal dysplasia, and to analyze the phenotype of missing teeth pattern in these two groups of patients. METHODS In the study, 174 patients with tooth agenesis (143: non-syndromic, 31: ectodermal dysplasia) and 451 health control volunteers were enrolled from the clinic, and the genome DNA was extracted from either peripheral blood or oral mucosal swab. The coding region of EDA gene was then amplified by PCR, sequenced and blasted to online NCBI database. The missing teeth were recorded for all patients, and the missing teeth from patients with EDA mutation were compared among the different dentition sites. RESULTS 33 patients were identified with EDA mutation. In the non-syndromic patients, 13/143(9.09%) were identified with EDA mutation, while in patients with ectodermal dysplasia, 20/31(64.52%) were found with EDA mutation. Ten novel EDA mutations were identified (c.769G>C[p.G257R ],c.936C>G[p.I312M],c.223G>A[p.E75K], .1166C>T[p.P389L],c.133G>C[p.G45R],c.1109G>A[p.E370K],c.914G>T[p.S305I], c.916C>T[p.Q306X],c.602G>T[p.G201V],c.88-89insG[p.A30GfsX69]). For each dentition site there was no statistic difference in the number of missing teeth between the left and right sides, so the number from both sides were combined later in the analysis. In the patients with EDA mutation, the non-syndromic patients had fewer missing teeth (15.9±6.4 missing teeth for each, 207/364 in total) than the patients with ectodermal dysplasia (23.9±4.3, 478/560). In the non-syndromic patients with EDA mutation, the maxillay central incisors and first molars were less affected, with the same missing rate as 19.2% (5/26). While the mandibular central incisors (with a missing rate of 76.9%, 20/26), the maxillary lateral incisors (the missing rate: 88.5%, 23/26), the mandibular lateral incisors (the missing rate: 80.8%, 21/26), and the maxillary first premolars (the missing rate: 80.8%, 21/26) were more likely to be missing. In the ectodermal dysplasia patients with EDA mutation, only maxillary central incisors (the missing rate: 60%, 24/40), maxillary canines (the missing rate: 70%, 28/40), mandibular canines (the missing rate: 67.5%, 27/40), maxillary first molars (the missing rate: 65%, 26/40) and mandibular first molars (the missing rate: 72.5%, 29/40) had higher possibility of persistence. Teeth at other dentition sites were more likely to be affected (the minimum missing rate: 87.5%, 35/40). CONCLUSION The findings would help to reveal the EDA gene and its function in ectodermal organogenesis.
Collapse
Affiliation(s)
- H Y He
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China; Department of Stomatology, Beijing Tsinghua Changgung Hospital, Beijing 102218, China
| | - Y Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - D Han
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H C Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - B J Bai
- Department of Prosthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing 100050, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| |
Collapse
|
50
|
Xu YJ, Li MC, Chen SS, Xiao SQ, Liu HC, Zhao XQ, Wu YM, Wan KL. [Analysis on the polymorphisms of human B cell epitopes of 5 specificity antigens in Mycobacterium tuberculosis in China]. Zhonghua Jie He He Hu Xi Za Zhi 2016; 39:372-7. [PMID: 27180592 DOI: 10.3760/cma.j.issn.1001-0939.2016.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To study the diversities of human B cell epitopes of five proteins (Mpt83, Mpt70, LpqH, PstS3, GroES) in Mycobacterium tuberculosis isolates from China. METHODS We selected 179 strains isolated from patients with tuberculosis in different regions of China, and cultured these strains by L-J medium. The gene sequences of these 5 proteins were amplified and sequenced by PCR. The variations (single nucleotide polymorphisms, SNP) of the DNA sequences were compared and analyzed according to the immune epitope database (IEDB). The synonymous mutation rate (dS), non-synonymous mutation rate (dN) and dN/dS values were calculated with MEGA6 software. RESULTS Among the 179 clinical MTBC isolates, 7 SNP mutations were found in the mpt83gene. The dN/dS value of the whole mpt83 gene was 0.88. One SNP mutation was found in the mpt70 gene. The dN/dS values of the whole pstS3 gene and non-B epitopes areas were 1.74 and 1.40 respectively. But no mutation was found in the groES gene. CONCLUSION The mpt83, lpqH and pstS3 genes of 179 MTBC strains contain gene SNPs and human B cell epitopes diversities, while the coding gene and human B cell epitopes of protein mpt70 and groES were conservative.
Collapse
Affiliation(s)
- Y J Xu
- Institute of Pathogenic Biology, University of South China, Hunan, 421000, China
| | | | | | | | | | | | | | | |
Collapse
|