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Moreau M, Acter S, Ngema LM, Bih N, Sy G, Keno LS, Chow KF, Sajo E, Nebangwa O, Walker J, Oh P, Broyles E, Ngwa W, Yasmin-Karim S. Pre-Clinical Investigations of the Pharmacodynamics of Immunogenic Smart Radiotherapy Biomaterials (iSRB). Pharmaceutics 2023; 15:2778. [PMID: 38140118 PMCID: PMC10747552 DOI: 10.3390/pharmaceutics15122778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
The use of an immunogenic smart radiotherapy biomaterial (iSRB) for the delivery of anti-CD40 is effective in treating different cancers in animal models. This study further characterizes the use of iSRBs to evaluate any associated toxicity in healthy C57BL6 mice. iSRBs were fabricated using a poly-lactic-co-glycolic-acid (PLGA) polymer mixed with titanium dioxide (TiO2) nanoparticles incorporated into its matrix. Animal studies included investigations of freely injected anti-CD40, anti-CD40-loaded iSRBs, unloaded iSRBs and control (healthy) animal cohorts. Mice were euthanized at pre-determined time points post-treatment to evaluate the serum chemistry pertaining to kidney and liver toxicity and cell blood count parameters, as well as pathology reports on organs of interest. Results showed comparable liver and kidney function in all cohorts. The results indicate that using iSRBs with or without anti-CD40 does not result in any significant toxicity compared to healthy untreated animals. The findings provide a useful reference for further studies aimed at optimizing the therapeutic efficacy and safety of iSRBs and further clinical translation work.
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Affiliation(s)
- Michele Moreau
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; (N.B.); (S.Y.-K.)
- Department of Radiation Oncology & Molecular Radiation Sciences, Johns’ Hopkins Hospital, Baltimore, MD 21287, USA; (S.A.); (L.M.N.); (G.S.)
- Department of Chemistry and Department of Physics (Medical Physics), University of Massachusetts Lowell, Lowell, MA 01854, USA; (K.F.C.); (E.S.)
| | - Shahinur Acter
- Department of Radiation Oncology & Molecular Radiation Sciences, Johns’ Hopkins Hospital, Baltimore, MD 21287, USA; (S.A.); (L.M.N.); (G.S.)
| | - Lindokuhle M. Ngema
- Department of Radiation Oncology & Molecular Radiation Sciences, Johns’ Hopkins Hospital, Baltimore, MD 21287, USA; (S.A.); (L.M.N.); (G.S.)
- Department of Pharmacy & Pharmacology, WITS Advanced Drug Delivery Platform Research Unit, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Noella Bih
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; (N.B.); (S.Y.-K.)
| | - Gnagna Sy
- Department of Radiation Oncology & Molecular Radiation Sciences, Johns’ Hopkins Hospital, Baltimore, MD 21287, USA; (S.A.); (L.M.N.); (G.S.)
| | - Lensa S. Keno
- Department of Health Administration and Human Resources, The University of Scranton, Scranton, PA 18510, USA;
| | - Kwok Fan Chow
- Department of Chemistry and Department of Physics (Medical Physics), University of Massachusetts Lowell, Lowell, MA 01854, USA; (K.F.C.); (E.S.)
| | - Erno Sajo
- Department of Chemistry and Department of Physics (Medical Physics), University of Massachusetts Lowell, Lowell, MA 01854, USA; (K.F.C.); (E.S.)
| | - Oscar Nebangwa
- Nanocan Therapeutics Corporation, Princeton, NJ 08540, USA; (O.N.); (J.W.); (E.B.)
| | - Jacques Walker
- Nanocan Therapeutics Corporation, Princeton, NJ 08540, USA; (O.N.); (J.W.); (E.B.)
| | - Philmo Oh
- Nanocan Therapeutics Corporation, Princeton, NJ 08540, USA; (O.N.); (J.W.); (E.B.)
| | - Eric Broyles
- Nanocan Therapeutics Corporation, Princeton, NJ 08540, USA; (O.N.); (J.W.); (E.B.)
| | - Wilfred Ngwa
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; (N.B.); (S.Y.-K.)
- Department of Radiation Oncology & Molecular Radiation Sciences, Johns’ Hopkins Hospital, Baltimore, MD 21287, USA; (S.A.); (L.M.N.); (G.S.)
- Department of Chemistry and Department of Physics (Medical Physics), University of Massachusetts Lowell, Lowell, MA 01854, USA; (K.F.C.); (E.S.)
| | - Sayeda Yasmin-Karim
- Department of Radiation Oncology, Brigham and Women’s Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA; (N.B.); (S.Y.-K.)
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Bhoopalan V, Gardiner EE, Kaur A. An Optimized Method of Collecting Murine Peripheral Blood and Dilution Correction for Accurate Blood Cell Enumeration. Curr Protoc 2023; 3:e765. [PMID: 37232369 DOI: 10.1002/cpz1.765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Accurate measurement of whole blood counts from mice is an essential quantitative tool across the fields of vascular cell biology. In particular, the measurement of platelet counts can be challenging as the process relies upon good phlebotomy technique, the inclusion of a sufficient amount of the appropriate anticoagulant, and very often dilution of the sample to meet the sample volume requirements of an automated analyzer. To minimize sample dilution, blood collection tubes pre-coated with the anticoagulant can be used; however, these are expensive and prone to blood clotting issues. Here, we describe a simple dilution correction method that accurately calculates blood-to-anticoagulant dilutions to generate appropriate volumes for automated blood cell analysis while minimizing blood clotting. We also discuss some simple steps that can be incorporated into blood collection methods to avoid artefacts during blood collection. Blood count data analysis involving volume correction and clot exclusion can significantly reduce variable blood cell count values among healthy untreated littermates. It also detects subtle changes in blood cell counts, mainly of platelets and RBCs in experimental settings, which can be masked in the absence of careful and precise volume correction. Blood count analysis with volume correction precisely determines mouse whole blood cell counts for investigators. The decreased variability in cell count values reduces the number of experimental animals required for meaningful analysis. © 2023 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol: An optimized method of collecting murine peripheral blood and dilution correction for accurate blood cell enumeration.
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Affiliation(s)
- Vijay Bhoopalan
- Division of Genome Sciences and Cancer, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Elizabeth E Gardiner
- Division of Genome Sciences and Cancer, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Amandeep Kaur
- Division of Genome Sciences and Cancer, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
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HEMATOLOGIC AND BIOCHEMICAL VALUES OF THE JUVENILE EASTERN GRAY SQUIRREL ( SCIURUS CAROLINENSIS). J Zoo Wildl Med 2021; 50:644-649. [PMID: 33517634 DOI: 10.1638/2018-0106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2019] [Indexed: 11/21/2022] Open
Abstract
Venous blood samples were collected from 64 apparently healthy juvenile Eastern gray squirrels (Sciurus carolinensis) after sedation with midazolam at the Wildlife Center of Texas located in Houston, Texas, during 2012. Blood gas (pH, PCO2, PO2, base excess, bicarbonate, oxygen saturation), electrolyte (sodium, potassium), biochemical (total CO2, ionized calcium, glucose), and hematologic parameters (hematocrit, hemoglobin, complete blood count) were determined using the i-STAT point-of-care analyzer. Sex did not affect any analyte. All squirrels recovered uneventfully and were successfully rehabilitated and released. Most values were as expected based on comparison to other young rodent species. These analyte data for healthy juvenile Eastern gray squirrels may be useful in assessment of Eastern gray squirrel population health and management and treatment of individual squirrels presented in need of medical care.
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Liu Y, Xu H, Li T, Wang W. Microtechnology-enabled filtration-based liquid biopsy: challenges and practical considerations. LAB ON A CHIP 2021; 21:994-1015. [PMID: 33710188 DOI: 10.1039/d0lc01101k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Liquid biopsy, an important enabling technology for early diagnosis and dynamic monitoring of cancer, has drawn extensive attention in the past decade. With the rapid developments of microtechnology, it has been possible to manipulate cells at the single-cell level, which dramatically improves the liquid biopsy capability. As the microtechnology-enabled liquid biopsy matures from proof-of-concept demonstrations towards practical applications, a main challenge it is facing now is to process clinical samples which are usually of a large volume while containing very rare targeted cells in complex backgrounds. Therefore, a high-throughput liquid biopsy which is capable of processing liquid samples with a large volume in a reasonable time along with a high recovery rate of rare targeted cells from complex clinical liquids is in high demand. Moreover, the purity, viability and release feasibility of recovered targeted cells are the other three key impact factors requiring careful considerations. To date, among the developed techniques, micropore-type filtration has been acknowledged as the most promising solution to address the aforementioned challenges in practical applications. However, the presently reported studies about micropore-type filtration are mostly based on trial and error for device designs aiming at different cancer types, which requires lots of efforts. Therefore, there is an urgent need to investigate and elaborate the fundamental theories of micropore-type filtration and key features that influence the working performances in the liquid biopsy of real clinical samples to promote the application efficacy in practical applications. In this review, the state of the art of microtechnology-enabled filtration is systematically and comprehensively summarized. Four key features of the filtration, including throughput, purity, viability and release feasibility of the captured targeted cells, are elaborated to provide the guidelines for filter designs. The recent progress in the filtration mode modulation and sample standardization to improve the filtration performance of real clinical samples is also discussed. Finally, this review concludes with prospective views for future developments of filtration-based liquid biopsy to promote its application efficacy in clinical practice.
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Affiliation(s)
- Yaoping Liu
- Institute of Microelectronics, Peking University, Beijing, 100871, China.
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Norsworthy GD, Cook AK, Lanier CJ. Impact of preheparinization and sample volume on routine hematology findings in healthy cats. J Feline Med Surg 2021; 23:79-85. [PMID: 32478634 PMCID: PMC10741361 DOI: 10.1177/1098612x20926357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES It can be challenging to collect sufficient blood from feline patients for both a biochemical profile and a complete blood count (CBC). The ability to generate accurate hematologic and biochemical data from a single, small (<2 ml) sample could reduce patient stress and improve clinical efficiency. The objective of this study was to determine the impact of preheparinization and/or sample size on routine hematology findings in cats. METHODS Blood was collected from 20 healthy cats; measured aliquots were placed directly into tubes containing either EDTA or lithium-heparin (Hep). Within 2 mins, specific volumes were removed from the Hep tubes and placed in additional EDTA tubes. Four distinct sample sizes/types were created from each cat: (1) 1.3 ml EDTA (criterion standard); (2) 0.5 ml EDTA; (3) 1.3 ml Hep + EDTA; and (4) 0.5 ml Hep + EDTA. Three CBCs were performed on each sample using an automated bench-top hematology analyzer. Drops of blood were contemporaneously used to create three air-dried stained slides from each tube. Triplicate results were averaged for statistical analysis; results were compared across all sample types and against the criterion standard. Significance was set at P <0.05. RESULTS Preheparinization did not significantly impact determinations of erythrocyte number, hematocrit, hemoglobin concentration, mean cell volume and neutrophil count. Platelet counts for the non-traditional samples correlated poorly with the criterion standard, although numbers could be effectively estimated using stained slides. Cell morphology was well preserved across all sample types. CONCLUSIONS AND RELEVANCE These results indicate that a 0.5 ml preheparinized EDTA blood sample can generate clinically useful hematologic data (excluding platelet count) in cats, using a bench-top analyzer. Our findings support the collection of a single small (<2 ml) sample that can be used for both biochemical and hematologic analyses. Further studies are needed to verify these findings using other hematology machines and in diseased cats.
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Affiliation(s)
| | - Audrey K Cook
- Department of Small Animal Clinical
Science, Texas A&M University College of Veterinary Medicine and Biomedical
Sciences, College Station, TX, USA
| | - Christopher J Lanier
- Department of Comparative, Diagnostic,
and Population Medicine, University of Florida College of Veterinary Medicine,
Gainesville, FL, USA
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Medical Management and Diagnostic Approaches. THE LABORATORY RAT 2020. [PMCID: PMC7153319 DOI: 10.1016/b978-0-12-814338-4.00011-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This chapter reviews the basic principles of medical management of rat colonies and diagnostic approaches to detect infectious diseases of rats. As is the case with all other species, rats are susceptible to a variety of injuries and diseases that can cause distress, morbidity, or mortality. Any facility that houses rats must develop monitoring programs designed to rapidly identify health-related problems so they can be communicated to appropriate veterinary or animal care personnel to be resolved. These programs generally consist of multiple components, some of which are directed toward individual animals and others that assess the health status of rat populations as a whole. Topics include individual animal monitoring and care, signs of illness and distress, colony health management, components of microbiological monitoring programs, including agents commonly targeted and sentinel programs, quarantine, biological material screening, diagnostic testing methodologies, including culture, serology, molecular diagnostic and histopathology, test profiles and interpretation, management of disease outbreaks, and treatment and prevention strategies for infectious agents.
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Aurbach K, Spindler M, Haining EJ, Bender M, Pleines I. Blood collection, platelet isolation and measurement of platelet count and size in mice-a practical guide. Platelets 2018; 30:698-707. [PMID: 30346859 DOI: 10.1080/09537104.2018.1528345] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Inherited or acquired disorders of platelet production and function can result in thrombocytopenia and bleeding. Mouse models have proven useful for investigating the mechanisms that underlie these defects in humans. Precise methods for blood withdrawal, platelet isolation and measurement of platelet parameters are key for the generation of reproducible and conclusive data. Here, we provide three different protocols for mouse platelet isolation to encourage research knowledge transfer between experienced laboratories, while at the same time enabling less experienced researchers to implement a protocol that best suits their local expertise and equipment. We also address the issue that reported mouse platelet count and size vary considerably in the literature by investigating different factors that influence these important platelet parameters, namely: 1) genetic background and gender, 2) choice of analysis method (hematological analyzer or flow cytometry), 3) dilution of the blood sample and 4) choice of anticoagulant. The herein presented results and considerations may serve as a practical guide for both experienced and new researchers in the platelet field.
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Affiliation(s)
- Katja Aurbach
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
| | - Markus Spindler
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
| | - Elizabeth J Haining
- b Institute of Cardiovascular Science, College of Medical and Dental Sciences , University of Birmingham, Edgbaston , Birmingham , UK
| | - Markus Bender
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
| | - Irina Pleines
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
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Johns JL, Moorhead KA, Hu J, Moorhead RC. Bias due to Preanalytical Dilution of Rodent Serum for Biochemical Analysis on the Siemens Dimension Xpand Plus. Front Vet Sci 2018; 5:3. [PMID: 29497614 PMCID: PMC5818404 DOI: 10.3389/fvets.2018.00003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/09/2018] [Indexed: 11/13/2022] Open
Abstract
Clinical pathology testing of rodents is often challenging due to insufficient sample volume. One solution in clinical veterinary and exploratory research environments is dilution of samples prior to analysis. However, published information on the impact of preanalytical sample dilution on rodent biochemical data is incomplete. The objective of this study was to evaluate the effects of preanalytical sample dilution on biochemical analysis of mouse and rat serum samples utilizing the Siemens Dimension Xpand Plus. Rats were obtained from end of study research projects. Mice were obtained from sentinel testing programs. For both, whole blood was collected via terminal cardiocentesis into empty tubes and serum was harvested. Biochemical parameters were measured on fresh and thawed frozen samples run straight and at dilution factors 2-10. Dilutions were performed manually, utilizing either ultrapure water or enzyme diluent per manufacturer recommendations. All diluted samples were generated directly from the undiluted sample. Preanalytical dilution caused clinically unacceptable bias in most analytes at dilution factors four and above. Dilution-induced bias in total calcium, creatinine, total bilirubin, and uric acid was considered unacceptable with any degree of dilution, based on the more conservative of two definitions of acceptability. Dilution often caused electrolyte values to fall below assay range precluding evaluation of bias. Dilution-induced bias occurred in most biochemical parameters to varying degrees and may render dilution unacceptable in the exploratory research and clinical veterinary environments. Additionally, differences between results obtained at different dilution factors may confound statistical comparisons in research settings. Comparison of data obtained at a single dilution factor is highly recommended.
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Affiliation(s)
- Jennifer L Johns
- Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR, United States
| | - Kaitlin A Moorhead
- Department of Comparative Medicine, Stanford School of Medicine, Stanford, CA, United States
| | - Jing Hu
- Department of Comparative Medicine, Stanford School of Medicine, Stanford, CA, United States
| | - Roberta C Moorhead
- Department of Comparative Medicine, Stanford School of Medicine, Stanford, CA, United States
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Poitout-Belissent F, Aulbach A, Tripathi N, Ramaiah L. Reducing blood volume requirements for clinical pathology testing in toxicologic studies-points to consider. Vet Clin Pathol 2016; 45:534-551. [DOI: 10.1111/vcp.12429] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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