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Bennett-Boehm MM, Mahr AR, Hartwell ST, Regan AK, Weber IS, Blackmon A, Bisson CR, Truong AN, Circo BA, Nienhueser J, Rogers DR, Booher N, Rajagopalan N, Martens JW, Denton PW. Development and implementation of natural killer cell simultaneous ADCC and direct killing assay. Heliyon 2023; 9:e22991. [PMID: 38125417 PMCID: PMC10731071 DOI: 10.1016/j.heliyon.2023.e22991] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/09/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Assays to quantify natural killer (NK) cell killing efficacy have traditionally focused on assessing either direct killing or antibody dependent cell-mediated cytotoxicity (ADCC) independently. Due to the probability that immunotherapeutic interventions affect NK cell-mediated direct killing and NK cell-mediated ADCC differently, we developed an assay with the capacity to measure NK cell-mediated direct killing and ADCC simultaneously with cells from the same human donor. Specifically, this design allows for a single NK cell population to be split into several experimental conditions (e.g., direct killing, ADCC), thus controlling for potential confounders associated with human-to-human variation when assessing immunotherapy impacts. Our Natural Killer cell Simultaneous ADCC and Direct Killing Assay (NK-SADKA) allows researchers to reproducibly quantify both direct killing and ADCC by human NK cells. Furthermore, this optimized experimental design allows for concurrent analysis of the NK cells via flow cytometric immunophenotyping of NK cell populations which will facilitate the identification of relationships between NK cell phenotype and the subsequent killing potential. This assay will be valuable for assessing the broader impact(s) of immunotherapy strategies on both modes of NK cell killing.
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Affiliation(s)
- Maia M.C. Bennett-Boehm
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
- Department of Information Science and Technology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Anna R. Mahr
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Sean T. Hartwell
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Alexander K. Regan
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Isabelle S. Weber
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Arriana Blackmon
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Cami R. Bisson
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Angela N. Truong
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Bella A. Circo
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Jaden Nienhueser
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Donald R. Rogers
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Nathan Booher
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Nithya Rajagopalan
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Jacob W.S. Martens
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
| | - Paul W. Denton
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska, USA
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Marinovich ML, Regan AK, Gissler M, Magnus MC, Håberg SE, Mayo JA, Shaw GM, Bell J, Nassar N, Ball S, Gebremedhin AT, Marston C, de Klerk N, Betrán AP, Padula AM, Pereira G. Associations between interpregnancy interval and preterm birth by previous preterm birth status in four high-income countries: a cohort study. BJOG 2021; 128:1134-1143. [PMID: 33232573 DOI: 10.1111/1471-0528.16606] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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] [Accepted: 11/16/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To investigate the effect of interpregnancy interval (IPI) on preterm birth (PTB) according to whether the previous birth was preterm or term. DESIGN Cohort study. SETTING USA (California), Australia, Finland, Norway (1980-2017). POPULATION Women who gave birth to first and second (n = 3 213 855) singleton livebirths. METHODS Odds ratios (ORs) for PTB according to IPIs were modelled using logistic regression with prognostic score stratification for potential confounders. Within-site ORs were pooled by random effects meta-analysis. OUTCOME MEASURE PTB (gestational age <37 weeks). RESULTS Absolute risk of PTB for each IPI was 3-6% after a previous term birth and 17-22% after previous PTB. ORs for PTB differed between previous term and preterm births in all countries (P-for-interaction ≤ 0.001). For women with a previous term birth, pooled ORs were increased for IPI <6 months (OR 1.50, 95% CI 1.43-1.58); 6-11 months (OR 1.10, 95% CI 1.04-1.16); 24-59 months (OR 1.16, 95% CI 1.13-1.18); and ≥ 60 months (OR 1.72, 95%CI 1.60-1.86), compared with 18-23 months. For previous PTB, ORs were increased for <6 months (OR 1.30, 95% CI 1.18-1.42) and ≥60 months (OR 1.29, 95% CI 1.17-1.42), but were less than ORs among women with a previous term birth (P < 0.05). CONCLUSIONS Associations between IPI and PTB are modified by whether or not the previous pregnancy was preterm. ORs for short and long IPIs were higher among women with a previous term birth than a previous PTB, which for short IPI is consistent with the maternal depletion hypothesis. Given the high risk of recurrence and assuming a causal association between IPI and PTB, IPI remains a potentially modifiable risk factor for women with previous PTB. TWEETABLE ABSTRACT Short versus long interpregnancy intervals associated with higher ORs for preterm birth (PTB) after a previous PTB.
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Affiliation(s)
- M L Marinovich
- School of Public Health, Curtin University, Perth, WA, Australia
| | - A K Regan
- School of Public Health, Texas A&M University, College Station, TX, USA
| | - M Gissler
- Information Services Department, Finnish Institute for Health and Welfare, Helsinki, Finland
- Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - M C Magnus
- MRC Integrative Epidemiology Unit at the University of Bristol, Bristol, UK
- Centre for Fertility and Health (CeFH), Norwegian Institute of Public Health, Oslo, Norway
| | - S E Håberg
- Centre for Fertility and Health (CeFH), Norwegian Institute of Public Health, Oslo, Norway
| | - J A Mayo
- Department of Pediatrics, March of Dimes Prematurity Research Center, Stanford University, Stanford, CA, USA
| | - G M Shaw
- Department of Pediatrics, March of Dimes Prematurity Research Center, Stanford University, Stanford, CA, USA
| | - J Bell
- Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, NSW, Australia
| | - N Nassar
- Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, NSW, Australia
| | - S Ball
- School of Nursing, Midwifery and Paramedicine, Curtin University, Perth, WA, Australia
| | - A T Gebremedhin
- School of Public Health, Curtin University, Perth, WA, Australia
| | - C Marston
- Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - N de Klerk
- Telethon Kids Institute, University of Western Australia, Subiaco, WA, Australia
| | - A P Betrán
- Department of Reproductive Health and Research, UNDP/UNFPA, UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, World Health Organization, Geneva, Switzerland
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA
| | - A M Padula
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA
| | - G Pereira
- School of Public Health, Curtin University, Perth, WA, Australia
- Centre for Fertility and Health (CeFH), Norwegian Institute of Public Health, Oslo, Norway
- Telethon Kids Institute, University of Western Australia, Subiaco, WA, Australia
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Regan AK, Arnaout A, Marinovich L, Marston C, Patino I, Kaur R, Gebremedhin A, Pereira G. Interpregnancy interval and risk of perinatal death: a systematic review and meta-analysis. BJOG 2020; 127:1470-1479. [PMID: 32378279 DOI: 10.1111/1471-0528.16303] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Interpregnancy interval (IPI) <6 months is a potentially modifiable risk factor for adverse perinatal health outcomes. OBJECTIVE This systematic review evaluated the international literature on the risk of perinatal death associated with IPI. SEARCH STRATEGY Two independent reviewers screened titles and abstracts identified in MEDLINE, EMBASE and Scopus from inception to 4 April 2019 (Prospero Registration #CRD42018092792). SELECTION CRITERIA Studies were included if they provided a description of IPI measurement and perinatal death, including stillbirth and neonatal death. DATA COLLECTION AND ANALYSIS A narrative review was performed for all included studies. Random effects meta-analysis was used to compare unadjusted odds of perinatal death associated with IPI <6 months and IPI ≥6 months. Analyses were performed by outcome of the preceding pregnancy and study location. MAIN RESULTS Of the 624 unique articles identified, 26 met the inclusion criteria. The pooled unadjusted odds ratio of perinatal death for IPI <6 months was 1.34 (95% CI 1.17-1.53) following a previous live birth, 0.85 (95% CI 0.73-0.99) following a previous miscarriage and 1.07 (95% CI 0.84-1.36) following a previous stillbirth compared with IPI ≥6 months. However, few high-income country studies reported an association after adjustment. Fewer studies evaluated the impact of long IPI on perinatal death and what evidence was available showed mixed results. CONCLUSIONS Results suggest a possible association between short IPI and risk of perinatal death following a live birth, particularly in low- to middle-income countries. TWEETABLE ABSTRACT Short IPI <6 months after a live birth was associated with greater risk of perinatal death than IPI ≥6 months.
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Affiliation(s)
- A K Regan
- School of Public Health, Texas A&M University, College Station, TX, USA.,School of Public Health, Curtin University, Perth, WA, Australia
| | - A Arnaout
- School of Public Health, Curtin University, Perth, WA, Australia
| | - L Marinovich
- School of Public Health, Curtin University, Perth, WA, Australia
| | - C Marston
- London School of Tropical Medicine and Hygiene, London, UK
| | - I Patino
- School of Public Health, Texas A&M University, College Station, TX, USA
| | - R Kaur
- School of Public Health, Texas A&M University, College Station, TX, USA
| | - A Gebremedhin
- School of Public Health, Curtin University, Perth, WA, Australia
| | - G Pereira
- School of Public Health, Curtin University, Perth, WA, Australia.,Centre for Fertility and Health, Norwegian Public Health Institute, Oslo, Norway
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Regan AK, Blyth CC, Tracey L, Mak DB, Richmond PC, Effler PV. Comparison of text-messaging to voice telephone interviews for active surveillance of adverse events following immunisation. Vaccine 2015; 33:3689-94. [PMID: 26079616 DOI: 10.1016/j.vaccine.2015.06.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/11/2015] [Accepted: 06/03/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVES In 2013, the Follow-up and Active Surveillance of Trivalent Influenza Vaccine in Mums (FASTMum) program began using short message service (SMS) to collect adverse event information in pregnant women who recently received trivalent influenza vaccine (TIV). This study was designed to compare data collected via SMS and telephone for the purposes of monitoring vaccine safety. METHODS A number of 344 women who received TIV were randomly assigned to a telephone interview group. They were telephoned seven days post-vaccination and administered a standard survey soliciting any adverse events following immunisation (AEFI) they experienced. They were matched by brand of vaccine, age group, and residence to 344 women who were sent a SMS seven days post-vaccination. The SMS solicited similar information. AEFI reported by SMS and telephone interview were compared by calculating risk ratios. RESULTS Response rate was higher to SMS compared to telephone interview (90.1% vs. 63.9%). Women who were surveyed by SMS were significantly less likely to report an AEFI compared to women who were surveyed by telephone (RR: 0.41; 95% CI: 0.29-0.59). The greatest discrepancies between SMS and telephone interview were for self-reported injection site reactions (3.1% vs. 16.8%) and unsolicited (or "other") events (11.4% vs. 4.1%). Data collected by SMS was significantly timelier. CONCLUSIONS Data collection by SMS results in significantly improved response rates and timeliness of vaccine safety data. Systems which incorporate SMS could be used to more rapidly detect safety signals and promote more rapid public health response to vaccine quality issues.
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Affiliation(s)
- A K Regan
- School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, WA, Australia; Communicable Disease Control Directorate, Western Australia Department of Health, Shenton Park, WA, Australia.
| | - C C Blyth
- School of Paediatrics and Child Health, University of Western Australia, Crawley, WA, Australia; Vaccine Trials Group, Telethon Kids Institute, University of Western Australia, Subiaco, WA, Australia
| | - L Tracey
- Communicable Disease Control Directorate, Western Australia Department of Health, Shenton Park, WA, Australia
| | - D B Mak
- Communicable Disease Control Directorate, Western Australia Department of Health, Shenton Park, WA, Australia
| | - P C Richmond
- School of Paediatrics and Child Health, University of Western Australia, Crawley, WA, Australia; Vaccine Trials Group, Telethon Kids Institute, University of Western Australia, Subiaco, WA, Australia
| | - P V Effler
- School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, WA, Australia; Communicable Disease Control Directorate, Western Australia Department of Health, Shenton Park, WA, Australia
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Tracey LE, Regan AK, Armstrong PK, Dowse GK, Effler PV. EbolaTracks: an automated SMS system for monitoring persons potentially exposed to Ebola virus disease. Euro Surveill 2015; 20. [DOI: 10.2807/1560-7917.es2015.20.1.20999] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report development and implementation of a short message service (SMS)-based system to facilitate active monitoring of persons potentially exposed to Ebola virus disease (EVD), whether returning from EVD-affected countries, or contacts of local cases, should they occur. The system solicits information on symptoms and temperature twice daily. We demonstrated proof-of-concept; however this system would likely be even more useful where there are many local contacts to confirmed EVD cases or travellers from EVD-affected countries.
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Affiliation(s)
- L E Tracey
- Communicable Disease Control Directorate, Department of Health, Perth, Western Australia, Australia
| | - A K Regan
- Communicable Disease Control Directorate, Department of Health, Perth, Western Australia, Australia
| | - P K Armstrong
- Communicable Disease Control Directorate, Department of Health, Perth, Western Australia, Australia
| | - G K Dowse
- Communicable Disease Control Directorate, Department of Health, Perth, Western Australia, Australia
| | - P V Effler
- Communicable Disease Control Directorate, Department of Health, Perth, Western Australia, Australia
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