1
|
Barnabas RV, Brown ER, Onono MA, Bukusi EA, Njoroge B, Winer RL, Galloway DA, Pinder LF, Donnell D, N Wakhungu I, Biwott C, Kimanthi S, Heller KB, Kanjilal DG, Pacella D, Morrison S, A Rechkina E, L Cherne S, Schaafsma TT, McClelland RS, Celum C, Baeten JM, Mugo NR. Durability of single-dose HPV vaccination in young Kenyan women: randomized controlled trial 3-year results. Nat Med 2023; 29:3224-3232. [PMID: 38049621 PMCID: PMC10719107 DOI: 10.1038/s41591-023-02658-0] [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: 04/28/2023] [Accepted: 10/20/2023] [Indexed: 12/06/2023]
Abstract
Cervical cancer burden is high where prophylactic vaccination and screening coverage are low. We demonstrated in a multicenter randomized, double-blind, controlled trial that single-dose human papillomavirus (HPV) vaccination had high vaccine efficacy (VE) against persistent infection at 18 months in Kenyan women. Here, we report findings of this trial through 3 years of follow-up. Overall, 2,275 healthy women aged 15-20 years were recruited and randomly assigned to receive bivalent (n = 760), nonavalent (n = 758) or control (n = 757) vaccine. The primary outcome was incident-persistent vaccine type-specific cervical HPV infection. The primary evaluation was superiority analysis in the modified intention-to-treat (mITT) HPV 16/18 and HPV 16/18/31/33/45/52/58 cohorts. The trial met its prespecified end points of vaccine type-specific persistent HPV infection. A total of 75 incident-persistent infections were detected in the HPV 16/18 mITT cohort: 2 in the bivalent group, 1 in the nonavalent group and 72 in the control group. Nonavalent VE was 98.8% (95% CI 91.3-99.8%, P < 0.0001) and bivalent VE was 97.5% (95% CI 90.0-99.4%, P < 0.0001). Overall, 89 persistent infections were detected in the HPV 16/18/31/33/45/52/58 mITT cohort: 5 in the nonavalent group and 84 in the control group; nonavalent VE was 95.5% (95% CI 89.0-98.2%, P < 0.0001). There were no vaccine-related severe adverse events. Three years after vaccination, single-dose HPV vaccination was highly efficacious, safe and conferred durable protection. ClinicalTrials.gov no. NCT03675256 .
Collapse
Affiliation(s)
- Ruanne V Barnabas
- Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.
- School of Medicine, Harvard Medical School, Boston, MA, USA.
- Department of Epidemiology, T. H. Chan Harvard School of Public Health, Boston, MA, USA.
| | - Elizabeth R Brown
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Public Health Sciences, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Maricianah A Onono
- Center for Microbiology Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Elizabeth A Bukusi
- Center for Microbiology Research, Kenya Medical Research Institute, Kisumu, Kenya
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA, USA
| | - Betty Njoroge
- Center for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Rachel L Winer
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Denise A Galloway
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Leeya F Pinder
- Department of Global Health, University of Washington, Seattle, WA, USA
- University of Cincinnati, Department of Obstetrics and Gynecology, Cincinnati, OH, USA
| | - Deborah Donnell
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Imelda N Wakhungu
- Center for Microbiology Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Charlene Biwott
- Center for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Syovata Kimanthi
- Center for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Kate B Heller
- Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Diane G Kanjilal
- Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Daniel Pacella
- Division of Infectious Diseases, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Susan Morrison
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Elena A Rechkina
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - Stephen L Cherne
- Department of Laboratory Medicine and Department of Pathology, University of Washington, Seattle, WA, USA
| | - Torin T Schaafsma
- Department of Global Health, University of Washington, Seattle, WA, USA
| | - R Scott McClelland
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, USA
- East Africa STI Laboratory, University of Washington, Mombasa, Kenya
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Jared M Baeten
- Department of Global Health, University of Washington, Seattle, WA, USA
- Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Nelly R Mugo
- Department of Global Health, University of Washington, Seattle, WA, USA
- Center for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya
| |
Collapse
|
2
|
Steinbronn C, Chhonker YS, Stewart J, Leingang H, Heller KB, Krows ML, Paasche‐Orlow M, Bershteyn A, Stankiewicz Karita HC, Agrawal V, Laufer M, Landovitz R, Wener M, Murry DJ, Johnston C, Barnabas RV, Arnold SLM. A linked physiologically based pharmacokinetic model for hydroxychloroquine and metabolite desethylhydroxychloroquine in SARS-CoV-2(-)/(+) populations. Clin Transl Sci 2023; 16:1243-1257. [PMID: 37118968 PMCID: PMC10339702 DOI: 10.1111/cts.13527] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/13/2023] [Accepted: 03/29/2023] [Indexed: 04/30/2023] Open
Abstract
Hydroxychloroquine (HCQ) is Food and Drug Administration (FDA)-approved for malaria, systemic and chronic discoid lupus erythematosus, and rheumatoid arthritis. Because HCQ has a proposed multimodal mechanism of action and a well-established safety profile, it is often investigated as a repurposed therapeutic for a range of indications. There is a large degree of uncertainty in HCQ pharmacokinetic (PK) parameters which complicates dose selection when investigating its use in new disease states. Complications with HCQ dose selection emerged as multiple clinical trials investigated HCQ as a potential therapeutic in the early stages of the COVID-19 pandemic. In addition to uncertainty in baseline HCQ PK parameters, it was not clear if disease-related consequences of SARS-CoV-2 infection/COVID-19 would be expected to impact the PK of HCQ and its primary metabolite desethylhydroxychloroquine (DHCQ). To address the question whether SARS-CoV-2 infection/COVID-19 impacted HCQ and DHCQ PK, dried blood spot samples were collected from SARS-CoV-2(-)/(+) participants administered HCQ. When a previously published physiologically based pharmacokinetic (PBPK) model was used to fit the data, the variability in exposure of HCQ and DHCQ was not adequately captured and DHCQ concentrations were overestimated. Improvements to the previous PBPK model were made by incorporating the known range of blood to plasma concentration ratios (B/P) for each compound, adjusting HCQ and DHCQ distribution settings, and optimizing DHCQ clearance. The final PBPK model adequately captured the HCQ and DHCQ concentrations observed in SARS-CoV-2(-)/(+)participants, and incorporating COVID-19-associated changes in cytochrome P450 activity did not further improve model performance for the SARS-CoV-2(+) population.
Collapse
Affiliation(s)
- Claire Steinbronn
- Department of PharmaceuticsUniversity of WashingtonSeattleWashingtonUSA
| | - Yashpal S. Chhonker
- Department of Pharmacy Practice and ScienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Jenell Stewart
- Division of Infectious DiseasesHennepin Healthcare Research InstituteMinneapolisMinnesotaUSA
- Department of MedicineUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Hannah Leingang
- Department of MedicineUniversity of WashingtonSeattleWashingtonUSA
| | - Kate B. Heller
- Department of MedicineUniversity of WashingtonSeattleWashingtonUSA
| | - Meighan L. Krows
- Department of Global HealthUniversity of WashingtonSeattleWashingtonUSA
| | - Michael Paasche‐Orlow
- Department of MedicineTufts Medical CenterBostonMassachusettsUSA
- Division of Primary CareTufts Medical CenterBostonMassachusettsUSA
| | - Anna Bershteyn
- Department of Population HealthNew York University Grossman School of MedicineNew YorkNew YorkUSA
| | | | - Vaidehi Agrawal
- Center for Vaccine Development and Global HealthUniversity of Maryland BaltimoreBaltimoreMarylandUSA
| | - Miriam Laufer
- Center for Vaccine Development and Global HealthUniversity of Maryland BaltimoreBaltimoreMarylandUSA
| | - Raphael Landovitz
- UCLA Center for Clinical AIDS Research and EducationDavid Geffen School of Medicine at UCLALos AngelesCaliforniaUSA
| | - Mark Wener
- Department of MedicineUniversity of WashingtonSeattleWashingtonUSA
| | - Daryl J. Murry
- Department of Pharmacy Practice and ScienceUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | | | - Ruanne V. Barnabas
- Massachusetts General HospitalBostonMassachusettsUSA
- Harvard Medical SchoolBostonMassachusettsUSA
| | | |
Collapse
|
3
|
Bunjun R, Ramla TF, Jaumdally SZ, Noël-Romas L, Ayele H, Brown BP, Gamieldien H, Harryparsad R, Dabee S, Nair G, Onono M, Palanee-Phillips T, Scoville CW, Heller KB, Baeten JM, Bosinger SE, Burgener A, Passmore JAS, Jaspan H, Heffron R. Initiating Intramuscular Depot Medroxyprogesterone Acetate Increases Frequencies of Th17-like Human Immunodeficiency Virus Target Cells in the Genital Tract of Women in South Africa: A Randomized Trial. Clin Infect Dis 2022; 75:2000-2011. [PMID: 35941737 PMCID: PMC9710690 DOI: 10.1093/cid/ciac284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 01/15/2022] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Cervicovaginal CD4+ T cells are preferential targets for human immunodeficiency virus (HIV) infection and have consequently been used as a proxy measure for HIV susceptibility. The ECHO randomized trial offered a unique opportunity to consider the association between contraceptives and Th17-like cells within a trial designed to evaluate HIV risk. In a mucosal substudy of the ECHO trial, we compared the impact of initiating intramuscular depot medroxyprogesterone acetate (DMPA-IM), copper-IUD, and the levonorgestrel (LNG) implant on cervical T cells. METHODS Cervical cytobrushes from 58 women enrolled in the ECHO trial were collected at baseline and 1 month after contraceptive initiation. We phenotyped cervical T cells using multiparameter flow cytometry, characterized the vaginal microbiome using 16s sequencing, and determined proteomic signatures associated with Th17-like cells using mass spectrometry. RESULTS Unlike the LNG implant or copper-IUD, DMPA-IM was associated with higher frequencies of cervical Th17-like cells within 1 month of initiation (P = .012), including a highly susceptible, activated population co-expressing CD38, CCR5, and α4β7 (P = .003). After 1 month, women using DMPA-IM also had more Th17-like cells than women using the Cu-IUD (P = .0002) or LNG implant (P = .04). Importantly, in women using DMPA-IM, proteomic signatures signifying enhanced mucosal barrier function were associated with the increased abundance of Th17-like cells. We also found that a non-Lactobacillus-dominant microbiome at baseline was associated with more Th17-like cells post-DMPA-IM (P = .03), although this did not influence barrier function. CONCLUSIONS Our data suggest that DMPA-IM-driven accumulation of HIV-susceptible Th17-like cells might be counteracted by their role in maintaining mucosal barrier integrity. CLINICAL TRIALS REGISTRATION NCT02550067.
Collapse
Affiliation(s)
- Rubina Bunjun
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Tanko F Ramla
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa,The Medical Research Centre, Institute of Medical Research and Medicinal Plant Studies (IMPM), Ministry of Scientific Research and Innovation, Yaoundé, Cameroon
| | - Shameem Z Jaumdally
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Laura Noël-Romas
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio, USA,Department of Obstetrics and Gynecology, University of Manitoba, Winnipeg, Canada
| | - Hossaena Ayele
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio, USA
| | - Bryan P Brown
- Seattle Children’s Research Institute, Seattle, Washington, USA
| | - Hoyam Gamieldien
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Rushil Harryparsad
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Smritee Dabee
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | | | | | - Thesla Palanee-Phillips
- Wits Reproductive Health and HIV Institute (WHRI), Johannesburg, South Africa,University of Washington, Seattle, Washington, USA
| | | | | | | | - Steven E Bosinger
- Emory University, Atlanta, Georgia, USA,Yerkes National Primate Research Center, Atlanta, Georgia, USA
| | - Adam Burgener
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio, USA,Department of Obstetrics and Gynecology, University of Manitoba, Winnipeg, Canada,Unit of Infectious Diseases, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
| | - Jo-Ann S Passmore
- Correspondence: J.-A. S. Passmore, Institute of Infectious Disease and Molecular Medicine, Division of Virology, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa ()
| | - Heather Jaspan
- Institute of Infectious Disease and Molecular Medicine, Department of Pathology, University of Cape Town, Cape Town, South Africa,Seattle Children’s Research Institute, Seattle, Washington, USA,University of Washington, Seattle, Washington, USA
| | | |
Collapse
|
4
|
Palanee-Phillips T, Rees HV, Heller KB, Ahmed K, Batting J, Beesham I, Heffron R, Justman J, Makkan H, Mastro TD, Morrison SA, Mugo N, Nair G, Kiarie J, Philip NM, Pleaner M, Reddy K, Selepe P, Steyn PS, Scoville CW, Smit J, Thomas KK, Donnell D, Baeten JM. High HIV incidence among young women in South Africa: Data from a large prospective study. PLoS One 2022; 17:e0269317. [PMID: 35657948 PMCID: PMC9165791 DOI: 10.1371/journal.pone.0269317] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 05/17/2022] [Indexed: 11/29/2022] Open
Abstract
Introduction South Africa has the highest national burden of HIV globally. Understanding drivers of HIV acquisition in recently completed, prospective studies in which HIV was an endpoint may help inform the strategy and investments in national HIV prevention efforts and guide the design of future HIV prevention trials. We assessed HIV incidence and correlates of incidence among women enrolled in ECHO (Evidence for Contraceptive Options and HIV Outcomes), a large, open-label randomized clinical trial that compared three highly effective. reversible methods of contraception and rates of HIV acquisition. Methods During December 2015 to October 2018, ECHO followed sexually active, HIV-seronegative women, aged 16–35 years, seeking contraceptive services and willing to be randomized to one of three contraceptive methods (intramuscular depot medroxyprogesterone acetate, copper intrauterine device, or levonorgestrel implant) for 12–18 months at nine sites in South Africa. HIV incidence based on prospectively observed HIV seroconversion events. Cox proportional hazards regression models were used to define baseline cofactors related to incident HIV infection. Results 5768 women were enrolled and contributed 7647 woman-years of follow-up. The median age was 23 years and 62.5% were ≤24 years. A total of 345 incident HIV infections occurred, an incidence of 4.51 per 100 woman-years (95%CI 4.05–5.01). Incidence was >3 per 100 woman-years at all sites. Age ≤24 years, baseline infection with sexually transmitted infections, BMI≤30, and having new or multiple partners in the three months prior to enrollment were associated with incident HIV. Conclusions HIV incidence was high among South African women seeking contraceptive services. Integration of diagnostic management of sexually transmitted infections alongside delivery of HIV prevention options in health facilities providing contraception services are needed to mitigate ongoing risks of HIV acquisition for this vulnerable population. Clinical trial registration ClinicalTrials.gov, number NCT02550067 was the main Clinical Trial from which this secondary, non-randomized / observational analysis was derived with data limited to just South African sites.
Collapse
Affiliation(s)
- Thesla Palanee-Phillips
- Wits Reproductive Health and HIV Institute (Wits RHI), University of the Witwatersrand, Faculty of Health Sciences, Johannesburg, South Africa
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
- * E-mail:
| | - Helen V. Rees
- Wits Reproductive Health and HIV Institute (Wits RHI), University of the Witwatersrand, Faculty of Health Sciences, Johannesburg, South Africa
| | - Kate B. Heller
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
| | | | - Joanne Batting
- Effective Care Research Unit (ECRU), University of the Witwatersrand/Fort Hare, East London, South Africa
| | - Ivana Beesham
- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, University of the Witwatersrand, Durban, South Africa
| | - Renee Heffron
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Jessica Justman
- Mailman School of Public Health, ICAP at Columbia University, New York, New York, United States of America
| | - Heeran Makkan
- Klerksdorp Clinical Research Centre, The Aurum Institute, Johannesburg, South Africa
| | | | - Susan A. Morrison
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Nelly Mugo
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Gonasagrie Nair
- Emavundleni Research Centre, University of Cape Town, Cape Town, South Africa
- Department of Medicine, Faculty of Medicine and Health Sciences, Centre for Medical Ethics and Law, Stellenbosch University, Stellenbosch, South Africa
| | - James Kiarie
- UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), World Health Organization, Geneva, Switzerland
| | - Neena M. Philip
- Mailman School of Public Health, ICAP at Columbia University, New York, New York, United States of America
| | - Melanie Pleaner
- Wits Reproductive Health and HIV Institute (Wits RHI), University of the Witwatersrand, Faculty of Health Sciences, Johannesburg, South Africa
| | - Krishnaveni Reddy
- Wits Reproductive Health and HIV Institute (Wits RHI), University of the Witwatersrand, Faculty of Health Sciences, Johannesburg, South Africa
| | - Pearl Selepe
- Klerksdorp Clinical Research Centre, The Aurum Institute, Johannesburg, South Africa
| | - Petrus S. Steyn
- UNDP-UNFPA-UNICEF-WHO-World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), World Health Organization, Geneva, Switzerland
| | | | - Jenni Smit
- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, University of the Witwatersrand, Durban, South Africa
| | - Katherine K. Thomas
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Deborah Donnell
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Jared M. Baeten
- Departments of Global Health, Medicine and Epidemiology, University of Washington, Seattle, Washington, United States of America
- Gilead Sciences, Foster City, California, United States of America
| | | |
Collapse
|
5
|
Barnabas RV, Brown ER, Onono MA, Bukusi EA, Njoroge B, Winer RL, Galloway DA, Pinder LF, Donnell D, Wakhungu I, Congo O, Biwott C, Kimanthi S, Oluoch L, Heller KB, Leingang H, Morrison S, Rechkina E, Cherne S, Schaafsma TT, McClelland RS, Celum C, Baeten JM, Mugo N. Efficacy of single-dose HPV vaccination among young African women. NEJM Evid 2022; 1:EVIDoa2100056. [PMID: 35693874 PMCID: PMC9172784 DOI: 10.1056/evidoa2100056] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Background Single-dose HPV vaccination, if efficacious, would be tremendously advantageous; simplifying implementation and decreasing costs. Methods We performed a randomized, multi-center, double-blind, controlled trial of single-dose nonavalent (HPV 16/18/31/33/45/52/58/6/11) or bivalent (HPV 16/18) HPV vaccination compared to meningococcal vaccination among Kenyan women aged 15-20 years. Enrollment and six monthly cervical swabs and a month three vaginal swab were tested for HPV DNA. Enrollment sera were tested for HPV antibodies. The modified intent-to-treat (mITT) cohort comprised participants who tested HPV antibody negative at enrollment and HPV DNA negative at enrollment and month three. The primary outcome was incident persistent vaccine-type HPV infection by month 18. Results Between December 2018 and June 2021, 2,275 women were randomly assigned and followed; 758 received the nonavalent HPV vaccine, 760 the bivalent HPV vaccine, and 757 the meningococcal vaccine; retention was 98%. Thirty-eight incident persistent infections were detected in the HPV 16/18 mITT cohort: one each among participants assigned to the bivalent and nonavalent groups and 36 among those assigned to the meningococcal group; nonavalent Vaccine Efficacy (VE) was 97.5% (95%CI 81.7-99.7%, p=<0.0001), and bivalent VE was 97.5% (95%CI 81.6-99.7%, p=<0.0001). Thirty-three incident persistent infections were detected in the HPV 16/18/31/33/45/52/58 mITT cohort: four in the nonavalent group and 29 in the meningococcal group; nonavalent VE for HPV 16/18/31/33/45/52/58 was 88.9% (95%CI 68.5-96.1%, p<0.0001). The rate of SAEs was 4.5-5.2% by group. Conclusions Over the 18 month time-frame we studied, single-dose bivalent and nonavalent HPV vaccines were each highly effective in preventing incident persistent oncogenic HPV infection, similar to multidose regimens.
Collapse
Affiliation(s)
- Ruanne V Barnabas
- Department of Global Health, University of Washington, Seattle, USA
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, USA
- Department of Epidemiology, University of Washington, Seattle, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, USA
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, MA, USA
| | - Elizabeth R Brown
- Department of Biostatistics, University of Washington, Seattle, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, USA
- Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, USA
| | - Maricianah A Onono
- Center for Microbiology Research, Kenya Medical Research Institute, Kenya
| | - Elizabeth A Bukusi
- Department of Global Health, University of Washington, Seattle, USA
- Department of Obstetrics and Gynecology, University of Washington, Seattle, USA
- Center for Microbiology Research, Kenya Medical Research Institute, Kenya
| | - Betty Njoroge
- Center for Clinical Research, Kenya Medical Research Institute, Kenya
| | - Rachel L Winer
- Department of Epidemiology, University of Washington, Seattle, USA
| | - Denise A Galloway
- Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, USA
| | - Leeya F Pinder
- Department of Obstetrics and Gynecology, University of Washington, Seattle, USA
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, USA
| | - Deborah Donnell
- Department of Global Health, University of Washington, Seattle, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, USA
| | - Imelda Wakhungu
- Center for Microbiology Research, Kenya Medical Research Institute, Kenya
| | - Ouma Congo
- Center for Clinical Research, Kenya Medical Research Institute, Kenya
| | - Charlene Biwott
- Center for Clinical Research, Kenya Medical Research Institute, Kenya
| | - Syovata Kimanthi
- Center for Clinical Research, Kenya Medical Research Institute, Kenya
| | - Linda Oluoch
- Center for Clinical Research, Kenya Medical Research Institute, Kenya
| | - Kate B Heller
- Department of Global Health, University of Washington, Seattle, USA
| | - Hannah Leingang
- Department of Global Health, University of Washington, Seattle, USA
| | - Susan Morrison
- Department of Global Health, University of Washington, Seattle, USA
| | - Elena Rechkina
- Department of Global Health, University of Washington, Seattle, USA
| | - Stephen Cherne
- Department of Pathology, University of Washington, Seattle, USA
| | | | - R Scott McClelland
- Department of Global Health, University of Washington, Seattle, USA
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, USA
- Department of Epidemiology, University of Washington, Seattle, USA
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle, USA
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, USA
- Department of Epidemiology, University of Washington, Seattle, USA
| | - Jared M Baeten
- Department of Global Health, University of Washington, Seattle, USA
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, USA
- Department of Epidemiology, University of Washington, Seattle, USA
- Gilead Sciences, Foster City, CA, USA
| | - Nelly Mugo
- Department of Global Health, University of Washington, Seattle, USA
- Center for Clinical Research, Kenya Medical Research Institute, Kenya
| |
Collapse
|
6
|
Montaño MA, Bemer MJ, Heller KB, Meisner A, Marfatia Z, Rechkina EA, Padgett LR, Ahls CL, Rains D, Hao L, Hsiang TY, Cangelosi GA, Greninger AL, Cantera JL, Golden A, Peck RB, Boyle DS, Gale M, Drain PK. Performance of anterior nares and tongue swabs for nucleic acid, Nucleocapsid, and Spike antigen testing for detecting SARS-CoV-2 against nasopharyngeal PCR and viral culture. Int J Infect Dis 2022; 117:287-294. [PMID: 35149246 PMCID: PMC8827388 DOI: 10.1016/j.ijid.2022.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 12/08/2021] [Revised: 02/01/2022] [Accepted: 02/04/2022] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVES This study assesses and compares the performance of different swab types and specimen collection sites for SARS-CoV-2 testing, to reference standard real-time reverse transcriptase-polymerase chain reaction (RT-PCR) and viral culture. METHODS Symptomatic adults with COVID-19 who visited routine COVID-19 testing sites used spun polyester and FLOQSwabs to self-collect specimens from the anterior nares and tongue. We evaluated the self-collected specimen from anterior nares and tongue swabs for the nucleocapsid (N) or spike (S) antigen of SARS-CoV-2 by RT-PCR and then compared these results with results from RT-PCR and viral cultures from nurse-collected nasopharyngeal swabs. RESULTS Diagnostic sensitivity was highest for RT-PCR testing conducted using specimens from the anterior nares collected on FLOQSwabs (84%; 95% CI 68-94%) and spun polyester swabs (82%; 95% CI 66-92%), compared to RT-PCR tests conducted using specimens from nasopharyngeal swabs. Relative to viral culture from nasopharyngeal swabs, diagnostic sensitivities were higher for RT-PCR and antigen testing of anterior nares swabs (91-100%) than that of tongue swabs (18-81%). Antigen testing of anterior nares swabs had higher sensitivities against viral culture (91%) than against nasopharyngeal RT-PCR (38-70%). All investigational tests had high specificity compared with nasopharyngeal RT-PCR. Spun polyester swabs are equally effective as FLOQSwabs for anterior nasal RT-PCR testing. CONCLUSIONS We found that anterior nares specimens were more sensitive than tongue swab specimens or antigen testing for detecting SARS-CoV-2 by RT-PCR. Thus, self-collected anterior nares specimens may represent an alternative method for diagnostic SARS-CoV-2 testing in some settings.
Collapse
Affiliation(s)
- Michalina A. Montaño
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA,Corresponding Author: Michalina Montano.
| | - Meagan J. Bemer
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA
| | - Kate B. Heller
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA
| | - Allison Meisner
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA,Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Zarna Marfatia
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA
| | - Elena A. Rechkina
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA
| | | | | | | | - Linhui Hao
- Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington, Seattle, WA
| | - Tien-Ying Hsiang
- Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington, Seattle, WA
| | - Gerard A. Cangelosi
- Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, Seattle, WA
| | | | | | | | | | | | - Michael Gale
- Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington, Seattle, WA
| | - Paul K. Drain
- Department of Global Health, School of Public Health, University of Washington, Seattle, WA
| |
Collapse
|
7
|
Stewart J, Krows ML, Schaafsma TT, Heller KB, Brown ER, Boonyaratanakornit J, Brown CE, Leingang H, Liou C, Bershteyn A, Schwartz MD, Agrawal V, Friedman-Klabanoff D, Eustace S, Stankiewicz Karita HC, Paasche-Orlow MK, Kissinger P, Hosek SG, Chu HY, Celum C, Baeten JM, Wald A, Johnston C, Barnabas RV. Comparison of Racial, Ethnic, and Geographic Location Diversity of Participants Enrolled in Clinic-Based vs 2 Remote COVID-19 Clinical Trials. JAMA Netw Open 2022; 5:e2148325. [PMID: 35157053 PMCID: PMC8844998 DOI: 10.1001/jamanetworkopen.2021.48325] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
IMPORTANCE Racial and ethnic diversity among study participants is associated with improved generalizability of clinical trial results and may address inequities in evidence that informs public health strategies. Novel strategies are needed for equitable access and recruitment of diverse clinical trial populations. OBJECTIVE To investigate demographic and geographical location data for participants in 2 remote COVID-19 clinical trials with online recruitment and compare with those of a contemporaneous clinic-based COVID-19 study. DESIGN, SETTING, AND PARTICIPANTS This cohort study was conducted using data from 3 completed, prospective randomized clinical trials conducted at the same time: 2 remotely conducted studies (the Early Treatment Study and Hydroxychloroquine COVID-19 Postexposure Prophylaxis [PEP] Study) and 1 clinic-based study of convalescent plasma (the Expanded Access to Convalescent Plasma for the Treatment of Patients With COVID-19 study). Data were collected from March to August 2020 with 1 to 28 days of participant follow-up. All studies had clinical sites in Seattle, Washington; the 2 remote trials also had collaborating sites in New York, New York; Syracuse, New York; Baltimore, Maryland; Boston, Massachusetts; Chicago, Illinois; New Orleans, Louisiana; and Los Angeles, California. Two remote trials with inclusive social media strategies enrolled 929 participants with recent SARS-CoV-2 exposure (Hydroxychloroquine COVID-19 PEP Trial) and 231 participants with COVID-19 infection (Early Treatment Study); the clinic-based Expanded Access to Convalescent Plasma for the Treatment of Patients With COVID-19 study enrolled 250 participants with recent COVID-19 infection. Data were analyzed from April to August 2021. INTERVENTIONS Remote trials used inclusive social media strategies and clinician referral for recruitment and telehealth, courier deliveries, and self-collected nasal swabs for remotely conducted study visits. For the clinic-based study, participants were recruited via clinician referral and attended in-person visits. MAIN OUTCOMES AND MEASURES Google Analytics data were used to measure online participant engagement and recruitment. Participant demographics and geographical location data from remote trials were pooled and compared with those of the clinic-based study. Statistical comparison of demographic data was limited to participants with COVID infections (ie, those in the remotely conducted Early Treatment Study vs those in the clinic-based study) to improve accuracy of comparison given that the Hydroxychloroquine COVID-19 PEP Trial enrolled participants with COVID-19 exposures and thus had different enrollment criteria. RESULTS A total of 1410 participants were included. Among 1160 participants in remote trials and 250 participants in the clinic-based trial, the mean (range) age of participants was 39 (18-80) years vs 50 (19-79) years and 676 individuals (58.3%) vs 131 individuals (52.4%) reported female sex. The Early Treatment Study with inclusive social media strategies enrolled 231 participants in 41 US states with increased rates of racial, ethnic, and geographic diversity compared with participants in the clinic-based study. Among 228 participants in the remotely conducted Early Treatment Study with race data vs participants in the clinic-based study, 39 individuals (17.1%) vs 1 individual (0.4%) identified as Alaska Native or American Indian, 11 individuals (4.8%) vs 22 individuals (8.8%) identified as Asian, 26 individuals (11.4%) vs 4 individuals (1.6%) identified as Black, 3 individuals (1.3%) vs 1 individual identified as Native Hawaiian or Pacific Islander, 117 individuals (51.3%) vs 214 individuals (85.6%) identified as White, and 32 individuals (14.0%) vs 8 individuals (3.2%) identified as other race (P < .001). Among 230 individuals in the Early Treatment Study vs 236 individuals in the clinic-based trial with ethnicity data, 71 individuals (30.9%) vs 11 individuals (4.7%) identified as Hispanic or Latinx (P<.001). There were 29 individuals in the Early Treatment Study with nonurban residences (ie, rural, small town, or peri-urban; 12.6%) vs 6 of 248 individuals in the clinic-based trial with residence data (2.4%) (P < .001). In remote trial online recruitment, the highest engagement was with advertisements on social media platforms; among 125 147 unique users with age demographics who clicked on online recruitment advertisements, 84 188 individuals (67.3%) engaged via Facebook. CONCLUSIONS AND RELEVANCE These findings suggest that remote clinical trials with online advertising may be considered as a strategy to improve diversity among clinical trial participants.
Collapse
Affiliation(s)
- Jenell Stewart
- Department of Global Health, University of Washington, Seattle
| | | | | | - Kate B. Heller
- Department of Global Health, University of Washington, Seattle
| | - Elizabeth R. Brown
- Department of Biostatistics, University of Washington, Seattle
- Department of Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, University of Washington, Seattle
| | - Jim Boonyaratanakornit
- Department of Medicine, University of Washington, Seattle
- Department of Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, University of Washington, Seattle
| | - Clare E. Brown
- Department of Global Health, University of Washington, Seattle
| | - Hannah Leingang
- Department of Global Health, University of Washington, Seattle
| | - Caroline Liou
- Department of Global Health, University of Washington, Seattle
| | - Anna Bershteyn
- Department of Population Health, New York University Grossman School of Medicine, New York, New York
| | - Mark D. Schwartz
- Department of Population Health, New York University Grossman School of Medicine, New York, New York
| | - Vaidehi Agrawal
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore
| | - DeAnna Friedman-Klabanoff
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore
| | - Stephen Eustace
- PRA Health Sciences, Digital Health Engagement, Raleigh, North Carolina
| | | | - Michael K. Paasche-Orlow
- Department of Medicine, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts
| | - Patricia Kissinger
- Department of Epidemiology, Tulane School of Public Health and Tropical Medicine, New Orleans, Louisiana
| | - Sybil G. Hosek
- Department of Psychiatry, John H. Stroger Jr Hospital of Cook County, Chicago, Illinois
| | - Helen Y. Chu
- Department of Global Health, University of Washington, Seattle
- Department of Medicine, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle
- Department of Medicine, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
| | - Jared M. Baeten
- Department of Global Health, University of Washington, Seattle
- Department of Medicine, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
- HIV Clinical Development at Gilead Sciences, Foster City, California
| | - Anna Wald
- Department of Medicine, University of Washington, Seattle
- Department of Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, University of Washington, Seattle
- Department of Laboratory Medicine, University of Washington, Seattle
- Department of Pathology, University of Washington, Seattle
| | | | - Ruane V. Barnabas
- Department of Global Health, University of Washington, Seattle
- Department of Medicine, University of Washington, Seattle
- Department of Epidemiology, University of Washington, Seattle
| |
Collapse
|
8
|
Johnston C, Brown ER, Stewart J, Karita HC, Kissinger PJ, Dwyer J, Hosek S, Oyedele T, Paasche-Orlow MK, Paolino K, Heller KB, Leingang H, Haugen HS, Dong TQ, Bershteyn A, Sridhar AR, Poole J, Noseworthy PA, Ackerman MJ, Morrison S, Greninger AL, Huang ML, Jerome KR, Wener MH, Wald A, Schiffer JT, Celum C, Chu HY, Barnabas RV, Baeten JM. Hydroxychloroquine with or without azithromycin for treatment of early SARS-CoV-2 infection among high-risk outpatient adults: A randomized clinical trial. EClinicalMedicine 2021; 33:100773. [PMID: 33681731 PMCID: PMC7912360 DOI: 10.1016/j.eclinm.2021.100773] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Treatment options for outpatients with COVID-19 could reduce morbidity and prevent SARS-CoV-2 transmission. METHODS In this randomized, double-blind, three-arm (1:1:1) placebo-equivalent controlled trial conducted remotely throughout the United States, adult outpatients with laboratory-confirmed SARS-CoV-2 infection were recruited. Participants were randomly assigned to receive hydroxychloroquine (HCQ) (400 mg BID x1day, followed by 200 mg BID x9days) with or without azithromycin (AZ) (500 mg, then 250 mg daily x4days) or placebo-equivalent (ascorbic acid (HCQ) and folic acid (AZ)), stratified by risk for progression to severe COVID-19 (high-risk vs. low-risk). Self-collected nasal swabs for SARS-CoV-2 PCR, FLUPro symptom surveys, EKGs and vital signs were collected daily. Primary endpoints were: (a) 14-day progression to lower respiratory tract infection (LRTI), 28-day COVID-19 related hospitalization, or death; (b) 14-day time to viral clearance; secondary endpoints included time to symptom resolution (ClinicalTrials.gov: NCT04354428). Due to the low rate of clinical outcomes, the study was terminated for operational futility. FINDINGS Between 15th April and 27th July 2020, 231 participants were enrolled and 219 initiated medication a median of 5.9 days after symptom onset. Among 129 high-risk participants, incident LRTI occurred in six (4.7%) participants (two control, four HCQ/AZ) and COVID-19 related hospitalization in seven (5.4%) (four control, one HCQ, two HCQ/AZ); no LRTI and two (2%) hospitalizations occurred in the 102 low-risk participants (one HCQ, one HCQ/AZ). There were no deaths. Among 152 participants with viral shedding at enrollment, median time to clearance was 5 days (95% CI=4-6) in HCQ, 6 days (95% CI=4-8) in HCQ/AZ, and 8 days (95% CI=6-10) in control. Viral clearance was faster in HCQ (HR=1.62, 95% CI=1.01-2.60, p = 0.047) but not HCQ/AZ (HR=1.25, p = 0.39) compared to control. Among 197 participants who met the COVID-19 definition at enrollment, time to symptom resolution did not differ by group (HCQ: HR=1.02, 95% CI-0.63-1.64, p = 0.95, HCQ/AZ: HR=0.91, 95% CI=0.57-1.45, p = 0.70). INTERPRETATION Neither HCQ nor HCQ/AZ shortened the clinical course of outpatients with COVID-19, and HCQ, but not HCQ/AZ, had only a modest effect on SARS-CoV-2 viral shedding. HCQ and HCQ/AZ are not effective therapies for outpatient treatment of SARV-CoV-2 infection. FUNDING The COVID-19 Early Treatment Study was funded by the Bill & Melinda Gates Foundation (INV-017062) through the COVID-19 Therapeutics Accelerator. University of Washington Institute of Translational Health Science (ITHS) grant support (UL1 TR002319), KL2 TR002317, and TL1 TR002318 from NCATS/NIH funded REDCap. The content is solely the responsibility of the authors and does not necessarily represent the views, decisions, or policies of the institutions with which they are affiliated. PAN and MJA were supported by the Mayo Clinic Windland Smith Rice Comprehensive Sudden Cardiac Death Program.Trial registration ClinicalTrials.gov number NCT04354428.
Collapse
Affiliation(s)
- Christine Johnston
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Elizabeth R. Brown
- Department of Biostatistics, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Jenell Stewart
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Global Health, University of Washington, United States
| | | | - Patricia J. Kissinger
- School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, United States
| | - John Dwyer
- School of Medicine, Tulane University, New Orleans, LA, United States
| | - Sybil Hosek
- John H. Stroger, Jr., Hospital of Cook County, Chicago, IL, United States
- Rush University Medical Center, Chicago, IL, United States
| | - Temitope Oyedele
- John H. Stroger, Jr., Hospital of Cook County, Chicago, IL, United States
- Rush University Medical Center, Chicago, IL, United States
| | - Michael K. Paasche-Orlow
- Boston University School of Medicine, Boston, MA, United States
- Boston Medical Center, Boston, MA, United States
| | - Kristopher Paolino
- State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Kate B. Heller
- Department of Global Health, University of Washington, United States
| | - Hannah Leingang
- Department of Global Health, University of Washington, United States
| | - Harald S. Haugen
- Department of Global Health, University of Washington, United States
| | - Tracy Q. Dong
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Anna Bershteyn
- New York University Grossman School of Medicine, NY, NY, United States
| | - Arun R. Sridhar
- Division of Cardiology, University of Washington, United States
| | - Jeanne Poole
- Division of Cardiology, University of Washington, United States
| | | | | | - Susan Morrison
- Department of Global Health, University of Washington, United States
| | - Alexander L. Greninger
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Meei-Li Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Keith R. Jerome
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Mark H. Wener
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Division of Rheumatology, University of Washington, Seattle, WA, United States
| | - Anna Wald
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Department of Epidemiology, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Joshua T. Schiffer
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Connie Celum
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Epidemiology, University of Washington, United States
- Department of Global Health, University of Washington, United States
| | - Helen Y. Chu
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Epidemiology, University of Washington, United States
- Department of Global Health, University of Washington, United States
| | - Ruanne V. Barnabas
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Department of Epidemiology, University of Washington, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Jared M. Baeten
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Epidemiology, University of Washington, United States
- Department of Global Health, University of Washington, United States
| | - for the COVID-19 Early Treatment Study Team
- Division of Allergy and Infectious Diseases, University of Washington, United States
- Department of Laboratory Medicine and Pathology, University of Washington, United States
- Department of Biostatistics, University of Washington, United States
- Department of Epidemiology, University of Washington, United States
- Department of Global Health, University of Washington, United States
- Division of Cardiology, University of Washington, United States
- Division of Rheumatology, University of Washington, Seattle, WA, United States
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
- School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, United States
- School of Medicine, Tulane University, New Orleans, LA, United States
- John H. Stroger, Jr., Hospital of Cook County, Chicago, IL, United States
- Rush University Medical Center, Chicago, IL, United States
- Boston University School of Medicine, Boston, MA, United States
- Boston Medical Center, Boston, MA, United States
- State University of New York Upstate Medical University, Syracuse, NY, United States
- New York University Grossman School of Medicine, NY, NY, United States
- Mayo Clinic, Rochester, MN, United States
| |
Collapse
|
9
|
Morrison CS, Hofmeyr GJ, Thomas KK, Rees H, Philip N, Palanee-Phillips T, Nanda K, Nair G, Onono M, Mastro TD, Lind M, Heffron R, Edward V, Deese J, Beksinska M, Beesham I, Stringer JS, Baeten JM, Ahmed K, Kiarie J, Mugo NR, Justman J, Nhlabatsi Z, Bukusi EA, Louw C, Bekker LG, Smit J, Singata-Madliki M, Sibiya S, Kasaro MP, Baron D, Donnell D, Gichangi PB, Heller KB, Mbandazayo N, Pleaner M, Scoville CW, Shears K, Steyn PS, Taylor D, Welch JD. Effects of Depot Medroxyprogesterone Acetate, Copper Intrauterine Devices, and Levonorgestrel Implants on Early HIV Disease Progression. AIDS Res Hum Retroviruses 2020; 36:632-640. [PMID: 32394723 PMCID: PMC7414801 DOI: 10.1089/aid.2020.0015] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Limited data exist on the effects of contraceptives on HIV disease progression. We studied the association between intramuscular injectable depot medroxyprogesterone acetate (DMPA-IM), the copper intrauterine device (IUD), and the levonorgestrel (LNG) implant on markers of HIV disease progression at the time of HIV detection and 3 months postdetection and time from detection to CD4 count <350 cells/mm3. Among women initiating antiretroviral therapy (ART), we studied the effect of contraceptive group on time from ART initiation to viral load (VL) <40 copies/mL. We included women 16-35 years randomized to DMPA-IM, copper IUD, or LNG implant with incident HIV infection during the Evidence for Contraceptive Options and HIV Outcomes (ECHO) trial (n = 382). We analyzed HIV VL and CD4 cell count according to participants' randomized method and also conducted a "continuous use" analysis that excluded follow-up time after method discontinuation. We used adjusted linear models to compare mean VL and CD4 cell levels by contraceptive group up to the time of ART initiation. We compared time from HIV detection to CD4 count <350 cells/mm3 and, following ART initiation, time to viral suppression (VL <40 copies/mL) using Cox proportional hazards models. At HIV detection, women allocated to DMPA-IM had lower VL relative to copper IUD (-0.28 log10 copies/mL; 95% confidence interval [CI]: -0.55 to -0.01) and LNG implant (-0.27, CI: -0.55 to 0.02) and higher mean CD4 than copper IUD users by 66 cells/mm3 (CI: 11-121). In continuous use analyses women allocated to DMPA-IM progressed to CD4 < 350 cells/mm3 slower than copper IUD users (hazard ratio [HR] = 0.6, CI: 0.3-1.1), whereas copper IUD users progressed faster than LNG implant users (HR = 1.8, CI: 1.0-3.3). Time to viral suppression was faster for DMPA-IM than copper IUD (HR = 1.5, CI: 1.0-2.3) and LNG implant 1.4 (CI: 0.9-2.2) users. We found no evidence of more rapid early HIV disease progression among women using DMPA-IM than among women using copper IUD or LNG implant. Our finding of more rapid progression among copper IUD compared with DMPA-IM users should be interpreted cautiously.
Collapse
Affiliation(s)
| | - G. Justus Hofmeyr
- Effective Care Research Unit, Department of Obstetrics and Gynaecology, University of Witwatersrand/Fort Hare/Walter Sisulu, East London, South Africa
- Department of Obstetrics and Gynaecology, University of Botswana, Gaborone, Botswana
| | | | - Helen Rees
- Wits Reproductive Health and HIV Institute (Wits RHI), University of Witswatersrand, Johannesburg, South Africa
| | - Neena Philip
- Mailman School of Public Health, ICAP at Columbia University, New York, USA
| | - Thesla Palanee-Phillips
- Wits Reproductive Health and HIV Institute (Wits RHI), University of Witswatersrand, Johannesburg, South Africa
| | | | | | | | | | - Maggie Lind
- Department of Global Health, University of Washington, Seattle, USA
| | - Renee Heffron
- Department of Global Health, University of Washington, Seattle, USA
| | - Vinodh Edward
- The Aurum Institute, Johannesburg, South Africa
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, Connecticut, USA
- Faculty of Health Sciences, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa
| | - Jen Deese
- FHI 360, Durham, North Carolina, USA
| | - Mags Beksinska
- MatCH Research Unit (MRU), Faculty of Health Sciences, Department of Obstetrics and Gynecology, University of the Witwatersrand, Durban, South Africa
| | - Ivana Beesham
- MatCH Research Unit (MRU), Faculty of Health Sciences, Department of Obstetrics and Gynecology, University of the Witwatersrand, Durban, South Africa
| | - Jeffrey S.A. Stringer
- Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Jared M. Baeten
- Department of Global Health, University of Washington, Seattle, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Onono M, Nanda K, Heller KB, Taylor D, Yacobson I, Heffron R, Kasaro MP, Louw CE, Nhlabasti Z, Palanee-Phillips T, Smit J, Wakhungu I, Gichangi PB, Mugo NR, Morrison C, Baeten JM. Comparison of pregnancy incidence among African women in a randomized trial of intramuscular depot medroxyprogesterone acetate (DMPA-IM), a copper intrauterine device (IUDs) or a levonorgestrel (LNG) implant for contraception. Contracept X 2020; 2:100026. [PMID: 32577615 PMCID: PMC7301167 DOI: 10.1016/j.conx.2020.100026] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/14/2020] [Accepted: 05/17/2020] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE The objective was to address bias in contraception efficacy studies through a randomized study trial of intramuscular depot medroxyprogesterone acetate (DMPA-IM), a copper intrauterine device (IUDs) and a levonorgestrel (LNG) implant. STUDY DESIGN We analyzed data from the Evidence for Contraceptive Options and HIV Outcomes Trial, which assessed HIV incidence among 7829 women from 12 sites in eSwatini, Kenya, South Africa and Zambia seeking effective contraception and who consented to be randomized to DMPA-IM, copper IUD or LNG implant. We used Cox proportional hazards regression adjusted for condom use to compare pregnancy incidence during both perfect and typical (i.e., allowing temporary interruptions) use. RESULTS A total of 7710 women contributed to this analysis. Seventy pregnancies occurred during perfect and 85 during typical use. There was no statistically significant difference in perfect use pregnancy incidence among the methods: 0.61 per 100 woman-years for DMPA-IM [95% confidence interval (CI) 0.36-0.96], 1.06 for copper IUD (95% CI 0.72-1.50) and 0.63 for LNG implants (95% CI 0.39-0.96). Typical use pregnancy rates were also largely similar: 0.87 per 100 woman-years for DMPA-IM (95% CI 0.58-1.25), 1.11 for copper IUD (95% CI 0.77-1.54) and 0.63 for LNG implants (95% CI 0.39-0.96). CONCLUSIONS In this randomized trial of highly effective contraceptive methods among African women, both perfect and typical use resulted in low pregnancy rates. Our findings provide strong justification for improving access to a broader range of longer-acting contraceptive options including LNG implants and copper IUD for African women. IMPLICATIONS STATEMENT Data from this study support recommendations to providers, policy makers and patients that all of these methods provide safe and highly effective contraception for African women.
Collapse
Affiliation(s)
- Maricianah Onono
- Kenya Medical Research Institute Center for Microbiology Research, P.O. Box 19464-00202, Nairobi, Kenya
| | | | | | | | | | | | | | - Cheryl E. Louw
- Madibeng Centre for Research, Brits, South Africa
- Department of Family Medicine, University of Pretoria, Pretoria, South Africa
| | - Zelda Nhlabasti
- Family Life Association of eSwatini & ICAP at Columbia University, eSwatini
| | - Thesla Palanee-Phillips
- Wits Reproductive Health and HIV Institute, University of the Witwatersrand, School of Clinical Medicine, Johannesburg, South Africa
| | - Jenni Smit
- University of the Witwatersrand, Durban, South Africa
| | - Imelda Wakhungu
- Kenya Medical Research Institute Center for Microbiology Research, P.O. Box 19464-00202, Nairobi, Kenya
| | - Peter B. Gichangi
- International Center for Reproductive Health, Kenya
- Technical University of Mombasa, Mombasa, Kenya
| | - Nelly R. Mugo
- Kenya Medical Research Institute Center for Microbiology Research, P.O. Box 19464-00202, Nairobi, Kenya
- University of Washington, Seattle, USA
| | | | | | - for the Evidence for Contraceptive Options and HIV Outcomes (ECHO) Trial Consortium
- Kenya Medical Research Institute Center for Microbiology Research, P.O. Box 19464-00202, Nairobi, Kenya
- FHI 360, Durham, USA
- University of Washington, Seattle, USA
- UNC Global Projects Zambia & University of North Carolina at Chapel Hill, Zambia
- Madibeng Centre for Research, Brits, South Africa
- Department of Family Medicine, University of Pretoria, Pretoria, South Africa
- Family Life Association of eSwatini & ICAP at Columbia University, eSwatini
- Wits Reproductive Health and HIV Institute, University of the Witwatersrand, School of Clinical Medicine, Johannesburg, South Africa
- University of the Witwatersrand, Durban, South Africa
- International Center for Reproductive Health, Kenya
- Technical University of Mombasa, Mombasa, Kenya
| |
Collapse
|
11
|
Hsu HY, Saadati HG, Mishra A, Heller KB, Sadun AA. Plasma levels of orally and subcutaneously administered pentoxifylline in rabbits. J Med 2001; 31:149-66. [PMID: 11280447] [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: 02/19/2023]
Abstract
In addition to its ability to improve microcirculation, pentoxifylline also has anti-tumor necrosis factor-alpha (TNF) actions which have prompted investigations into its potential efficacy in disease states involving elevated TNF levels. One such disease entity is AIDS where aberrant TNF seems to mediate axonal degeneration within thecentral nervous system. To this end, we have previously established a rabbit model of TNF-mediated axonal degeneration, and demonstrated that pentoxifylline attenuates this effect. Unfortunately, there has been to date only one limited report on the pharmacokinetics of pentoxifylline in rabbits. Therefore, the present report evaluates plasma levels of pentoxifylline and two of its primary metabolites through high-performance liquid chromatography after both the oral and subcutaneous administration of pentoxifylline. Our results indicate that in rabbits there is a very rapid absorption and metabolism of pentoxifylline after either oral or subcutaneous administration. In comparison with the mouse, the rabbit seems to absorb and metabolize pentoxifylline slower. In contrast to man, the rabbit had lower metabolite plasma levels than the parent drug itself.
Collapse
Affiliation(s)
- H Y Hsu
- Doheny Eye Institute, USC School of Medicine, Los Angeles, CA 90033, USA
| | | | | | | | | |
Collapse
|
12
|
Abstract
PURPOSE Immunohistochemical procedures were employed to test the hypothesis that cytokines such as interleukin-1beta (IL-1beta) and interleukin-6 (IL-6) are involved in AIDS-related optic neuropathy and to determine the primary cell types involved. METHODS Fixed sections of six human HIV-1 infected optic nerves were immunostained for the presence of IL-1beta and IL-6, using horseradish peroxidase and diaminobenzidine as markers. RESULTS IL-1beta and IL-6 were found in astrocytes, macrophages, microglia, and endothelial cells. The great majority of astrocytes demonstrated strong immunoreactivity. CONCLUSION Our findings support the premise that IL-1beta and IL-6 are significant pro-inflammatory mediators in AIDS-related optic neuropathy. This finding supports the theory that HIV infection stimulates the release of IL-1beta and IL-6 in astrocytes, macrophages, and endothelial cells in the optic nerve which ultimately leads to demyelination, astrogliosis, and neuronal destruction.
Collapse
Affiliation(s)
- H G Saadati
- University of Southern California School of Medicine Doheny Eye Institute Department of Ophthalmology, Los Angeles 90033, USA
| | | | | | | | | | | |
Collapse
|
13
|
Saadati HG, Hsu HY, Heller KB, Sadun AA. A histopathologic and morphometric differentiation of nerves in optic nerve hypoplasia and Leber hereditary optic neuropathy. Arch Ophthalmol 1998; 116:911-6. [PMID: 9682705 DOI: 10.1001/archopht.116.7.911] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVES To characterize and quantitate optic nerve histopathologic and morphometric differences between optic nerve hypoplasia (ONH) as an early and congenital form of intrinsic axonal loss and Leber hereditary optic neuropathy (LHON) as a late and acquired form of intrinsic axonal loss. MATERIALS AND METHODS Optic nerves from 3 sources were examined: a 42-year-old healthy woman (control), a 53-year-old woman with ONH diagnosed postmortem, and a 74-year-old woman with LHON. The optic nerves were processed, embedded, and stained with a 1% solution of paraphenylene diamine. Histopathologic and morphometric analyses were performed via light microscopy and a semiautomatic computer image analysis system. RESULTS The ONH showed severe axonal depletion without degenerated profiles in an inferonasal sector, with only a small superotemporal sector having a near normal appearance. The LHON revealed general axonal depletion centrally, fibrocytic scarring, scattered "degeneration dust," and evidence of minimal inflammation, with residual axons limited to superior and temporal peripheral clusters. Morphometric analysis revealed total fiber populations of 98,000 in the ONH optic nerve and 48,000 in the LHON optic nerve, representing 90% and 95% reductions, respectively, compared with the control optic nerve (1.2 million fibers). CONCLUSIONS Optic nerve hypoplasia and LHON present 2 distinguishable and distinctive patterns of nerve fiber distribution and axonal dropout. The lack of degenerated axons in ONH indicates that any axonal death probably occurred through apoptosis during development. In LHON, degenerated axons and minimal grade of inflammation were obvious, implicating a more "active" pathologic process. This study describes distinctions between these 2 optic neuropathies.
Collapse
Affiliation(s)
- H G Saadati
- Doheny Eye Institute, University of Southern California School of Medicine, Los Angeles, USA
| | | | | | | |
Collapse
|
14
|
Bick RL, Madden J, Heller KB, Toofanian A. Recurrent miscarriage: causes, evaluation, and treatment. Medscape Womens Health 1998; 3:2. [PMID: 9732087] [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: 02/08/2023]
Abstract
Recurrent miscarriage or fetal loss syndrome (also known as fetal wastage syndrome) is characterized by recurrent spontaneous abortion. There are many syndromes associated with recurrent fetal loss, including anatomic anomalies, endocrine/hormonal abnormalities, genetic/chromosomal abnormalities, and blood coagulation protein/platelet defects. Many of these syndromes are treatable, leading to normal term pregnancy, if the clinician is astute and vigorously pursues a thorough evaluation of why the patient has suffered unexplained, spontaneous miscarriages. There is no uniform agreement on how many spontaneous, unexplained miscarriages are needed to diagnose recurrent fetal loss; we generally pursue an evaluation for causation if a women has had 2 or more such events. In this article, we discuss the common reasons for recurrent fetal loss, plus diagnostic procedures to consider in pinpointing the problem, such as cytogenetic studies, blood coagulation protein/platelet tests, hysterosalpingography, sonography, and magnetic resonance imaging. We also describe management strategies that often lead to successful pregnancy outcome when the underlying problem is addressed. For example, in the case of thrombotic defects, a common cause of recurrent fetal loss, we report a 100% success rate in achieving a normal-term delivery among women who took low-dose (81 mg/day) aspirin preconception followed by postconception low-dose (5000 units q 12 h) heparin.
Collapse
Affiliation(s)
- R L Bick
- Thrombosis Clinical Center, Department of Medicine (Hematology & Oncology), Presbyterian Hospital of Dallas, Tex., USA
| | | | | | | |
Collapse
|
15
|
Kozak SF, Inderlied CB, Hsu HY, Heller KB, Sadun AA. The role of copper on ethambutol's antimicrobial action and implications for ethambutol-induced optic neuropathy. Diagn Microbiol Infect Dis 1998; 30:83-7. [PMID: 9554173 DOI: 10.1016/s0732-8893(97)00217-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [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: 02/07/2023]
Abstract
The principal side effect of the antimycobacterial agent ethambutol (EMB) is an optic neuropathy with clinical features very similar to a mitochondrial hereditary optic neuropathy (Leber's). The mechanism of EMB-induced optic neuropathy may be EMB's chelation of copper, thereby precluding normal cytochrome c oxidase activity and mitochondrial metabolism in the optic nerve. Before attempting to use therapeutic copper to replenish endogenous stores in an attempt to preclude EMB-induced optic neuropathy, we wished to determine whether EMB is still effective against mycobacteria in the presence of copper. EMB and copper, alone and in combination, were tested against six strains of Mycobacterium tuberculosis and five strains of Mycobacterium avium using a radiometric broth macrodilution assay. Copper did not effect EMB's antimicrobial actions against either species of mycobacteria. This in vitro study suggests that if copper were given to patients to prevent EMB-induced optic neuropathy, it would not compromise EMB's bacteriostatic properties.
Collapse
Affiliation(s)
- S F Kozak
- Department of Ophthalmology and Neurosurgery, Doheny Eye Institute, University of Southern California School of Medicine, Los Angeles 90033, USA
| | | | | | | | | |
Collapse
|
16
|
Abstract
PURPOSE Both in vitro and in vivo studies have implicated a role for tumor necrosis factor (TNF-alpha) in the pathology of demyelinating diseases. The purpose of this study was to address the hypothesis that TNF-alpha is a mediator of AIDS-related optic nerve injury and to determine the cell types involved in the proliferation of TNF-alpha in the AIDS optic nerve. METHODS Ten optic nerves from seven patients with AIDS, and three from persons who were HIV negative were stained, using the indirect immunoperoxidase method. Six of the ten AIDS optic nerves were positive for cytomegalovirus (CMV), but the remainder did not have abnormal fundus findings. RESULTS In all the optic nerves from AIDS patients with or without CMV retinitis, the vast majority of astrocytes stained strongly for TNF-alpha. Microglial cells (MPS-derived macrophages) varied from not staining to staining strongly positive for TNF-alpha. However, oligodendrocytes were not labeled positively for TNF-alpha. Some endothelial cells also stained for TNF-alpha. Examination of normal optic nerves and controls did not reveal any cell type that stained positively for TNF-alpha. CONCLUSIONS The present study supports the contention that TNF-alpha is a major mediator of AIDS-associated optic neuropathy. HIV infection induces the production of TNF-alpha in macrophages and astrocytes, which probably causes demyelination and other neuronal damage.
Collapse
Affiliation(s)
- X H Lin
- Department of Ophthalmology, Doheny Eye Institute, University of Southern California, Los Angeles 90033, USA
| | | | | | | | | | | |
Collapse
|
17
|
Abstract
In AIDS patients, axonal degeneration in the optic nerve occurs as a histopathological manifestation of the optic neuropathy. Direct infection of neurons by HIV is unlikely, and the axonal injury may be an indirect effect mediated by cytotoxic factors such as tumor necrosis factor-alpha (TNF-alpha) which we have previously demonstrated to cause axonal degeneration in the rabbit optic nerve. To test the suppressive effects of pentoxifylline in preventing TNF-alpha-mediated axonal degeneration, we applied pentoxifylline to an established rabbit model that demonstrates an AIDS-like optic neuropathy using intravitreal TNF-alpha injections. Degenerated axonal profiles were numerous in control rabbit optic nerve (mean 1879) and reduced in rabbits receiving the medium dose of pentoxifylline (300 mg PO BID, mean 439, p < 0.001) and the highest dose of pentoxifylline (600 mg PO BID, mean 120, p < 0.007). High dose pentoxifylline reduced TNF-alpha-induced axonal losses to less than 10% that seen without pentoxifylline pretreatment. Lower doses of pentoxifylline had a lesser but significant protective effect. Our results suggest that TNF-alpha-mediated axonal degeneration can be suppressed by high doses of pentoxifylline. Pentoxifylline may therefore be useful in AIDS patients demonstrating neurological or neuro-ophthalmological symptoms.
Collapse
Affiliation(s)
- M S Petrovich
- Department of Ophthalmology and Neurosurgery, Doheny Eye Institute, USC School of Medicine, Los Angeles 90033, USA
| | | | | | | | | | | |
Collapse
|
18
|
|
19
|
Wilson GN, Heller KB, Elterman RD, Schneider NR. Partial trisomy 18 with minimal anomalies: lack of correspondence between phenotypic manifestations and triplicated loci along chromosome 18. Am J Med Genet 1990; 36:506-10. [PMID: 1697142 DOI: 10.1002/ajmg.1320360427] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A 2-year-old boy with microcephaly, developmental delay, and minimal anomalies was found to have an extra submetacentric chromosome equivalent to 18pter----q12. Review of the phenotypes produced by various triplicated 18 regions supports the hypothesis that no one chromosome 18 region is sufficient to produce the phenotype of trisomy 18. The mild phenotype of trisomy 18p, the variable phenotype of trisomy 18pter----q12, and the discontinuous phenotype of triplication for band 18q12 alone emphasizes that the contribution of triplicated loci to the phenotype is neither additive nor invariant.
Collapse
Affiliation(s)
- G N Wilson
- Department of Pediatrics, University of Texas Southwestern Medical Center, Children's Medical Center of Dallas
| | | | | | | |
Collapse
|
20
|
Abstract
Cranium bifidum is literally "cleft skull." Numerous reports describe the anatomy of this defect, and crude estimates of the population prevalence suggest it is a relatively infrequent occurrence. McKusick's catalog contains only one family with cranium bifidum but several familial reports of symmetrical parietal foramina. Available information indicates that cranium bifidum and symmetrical parietal foramina are inherited in an autosomal dominant fashion and occur in orientals, blacks, whites, and native Americans. Here we report on a family with serial radiographs that document ontogenic development of parietal foramina in late childhood and adulthood from apparent cranium bifidum and parietal foramina during infancy and early childhood. We conclude that these are the same entity, differentiated only by the time during life in which the defect is demonstrated.
Collapse
Affiliation(s)
- B B Little
- Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas 75235-9032
| | | | | | | |
Collapse
|
21
|
Deuticke B, Henseleit U, Haest CW, Heller KB, Dubbelman TM. Enhancement of transbilayer mobility of a membrane lipid probe accompanies formation of membrane leaks during photodynamic treatment of erythrocytes. Biochim Biophys Acta 1989; 982:53-61. [PMID: 2742889 DOI: 10.1016/0005-2736(89)90173-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In order to further characterize membrane alterations in human erythrocytes subjected to photodynamic treatment the passive transbilayer mobility of a phospholipid analogue was studied in cells illuminated for various lengths of time in the presence of the photosensitizer, aluminum chlorotetrasulfophthalocyanine. These measurements were combined with the characterization of the membrane leaks for polar solutes occurring under the same conditions with respect to their apparent size, number and ion selectivity. The time-dependent photodynamic enhancement of leaks for K+ as well as choline or erythritol was paralleled by a marked increase of the transbilayer reorientation rate of the amphiphilic lipid probe, palmitoyllysophosphatidylcholine from 0.05% min-1 in native cells to 0.32% min-1 after 60 min illumination. The asymmetric orientation of native phospholipids was not affected by this treatment. The leak permeability proved to be due to the formation of pores with apparent radii of about 0.45 nm after 60 min illumination, and of 0.75 nm after 90 min. The number of pores per cell was calculated to be less than 1, the pores are slightly cation-selective (PK/PCl approximately 3:1). Since photodynamic treatment did not induce lipid peroxidation under the prevailing experimental conditions, protein modification must be the primary cause of both, leak permeability and flip enhancement. Since it is also likely that the leak permeability arises from oxidation of intrinsic membrane proteins, the results raise the interesting possibility that oxidative alteration of intrinsic membrane proteins may lead to enhanced transbilayer mobility of lipids.
Collapse
Affiliation(s)
- B Deuticke
- Institut für Physiologie, Medizinische Fakultät, RWTH Aachen, F.R.G
| | | | | | | | | |
Collapse
|
22
|
Heller KB, Jahn B, Deuticke B. Peroxidative membrane damage in human erythrocytes induced by a concerted action of iodoacetate, vanadate and ferricyanide. Biochim Biophys Acta 1987; 901:67-77. [PMID: 3496117 DOI: 10.1016/0005-2736(87)90257-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Human erythrocytes incubated without substrate in the presence of iodoacetate (0.2 mM), vanadate (0.5 mM) and ferricyanide (5 mM) form aqueous membrane leaks of equivalent radii of 0.5-0.8 nm leading to complete colloid-osmotic lysis within 180 min. All three components are indispensable for the effect. Inosine but not glucose markedly enhances the rate of hemolysis. These effects are due to oxidative damage, as indicated by concomitant destruction of polyunsaturated fatty acids and suppression of both effects by radical scavengers. Hemoglobin is not oxidized under these conditions. GSH and membrane SH levels remain almost normal, and no crosslinking or irreversible aggregation of membrane proteins is observed. In the absence of O2 no membrane damage can be observed. It is proposed that radical formation originates from reduction of O2 by NADPH, analogous to processes described in microsomal membranes. NADH seems not to be involved, since leak formation occurs in spite of the blockage of NADH formation by iodoacetate. Vanadate and ferricyanide are probably required to amplify the peroxidative reaction sufficiently to overcome the cellular antioxidative capacity.
Collapse
|
23
|
Deuticke B, Heller KB, Haest CW. Progressive oxidative membrane damage in erythrocytes after pulse treatment with t-butylhydroperoxide. Biochim Biophys Acta 1987; 899:113-24. [PMID: 3567188 DOI: 10.1016/0005-2736(87)90245-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Development of membrane damage in erythrocytes in the presence of the radical-forming oxidant t-butylhydroperoxide is a well established fact (see, for example, Deuticke et al. (1986) Biochim. Biophys. Acta 854, 169-183). We have now demonstrated that a mere pulse treatment of erythrocytes (5-15 min) with this agent leads to subsequent development of progressive oxidative membrane damage in spite of the absence of exogenous oxidant. Damage comprises the occurrence of ion leakiness and subsequent colloid-osmotic lysis, enhancement of the transbilayer mobility of phospholipid analogues, and lipid peroxidation. There is, however, only very little concomitant oxidation and precipitation of hemoglobin. Defect formation is not due to oxidation of SH-groups nor is it directly related to lipid peroxidation, since it can be suppressed by thiourea without concommitant inhibition of lipid peroxidation. This 'spontaneous' development of membrane damage can be antagonized by metabolic substrates and by desferrioxamine, indicating that lack of protective metabolic resources as well as the presence of catalytic metal (iron) complexes are required for the development of membrane damage. This progressive development of injury in cells only temporarily exposed to an exogenous oxidant may be regarded as a more appropriate model for oxidative membrane damage under pathophysiological conditions in vivo than cells exposed to continuous damage by exogenous oxidants.
Collapse
|
24
|
Deuticke B, Heller KB, Haest CW. Leak formation in human erythrocytes by the radical-forming oxidant t-butylhydroperoxide. Biochim Biophys Acta 1986; 854:169-83. [PMID: 3942722 DOI: 10.1016/0005-2736(86)90108-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Oxidative damage of human erythrocytes by the lipoperoxide analogue, t-butylhydroperoxide, has been characterized with regard to ion-permeable leaks formed in the membrane. The formation of these leaks is not correlated with oxidative denaturation of hemoglobin and its precipitation at the membrane. It is also not related to the oxidation of membrane protein SH-groups. A close, although not simply proportional correlation could be demonstrated between leak formation and phospholipid peroxidation as monitored by occurrence of malondialdehyde. The two processes showed similar dependences on exposure time, concentration and temperature. Both were stimulated by the addition of azide as a ligand of ferric heme iron, and suppressed by the anti-oxidant, butylated hydroxytoluene. The leak pathway permits solute permeation with a temperature dependency of bulk diffusion in water and discriminates nonelectrolytes according to size. Discrimination among alkali chlorides corresponds to their free solution mobility; sodium halides are discriminated more effectively. Apparent radii of about 0.5-0.7 nm can be assigned to the defects, while apparent numbers of defects per cell as low as 0.1-0.2 suggest that the defects are dynamic in nature.
Collapse
|
25
|
Heller KB, Poser B, Haest CW, Deuticke B. Oxidative stress of human erythrocytes by iodate and periodate. Reversible formation of aqueous membrane pores due to SH-group oxidation. Biochim Biophys Acta 1984; 777:107-16. [PMID: 6091752 DOI: 10.1016/0005-2736(84)90502-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Human erythrocytes were exposed to oxidative stress by iodate and periodate. Oxidation causes a time- and concentration-dependent increase in membrane permeability for hydrophilic molecules and ions. The induced leak discriminates nonelectrolytes on the basis of molecular size and exhibits a very low activation energy (Ea = 1-4 kcal.mol-1). These results are reconcilable with the formation of aqueous pores. The pore size was approximated to be between 0.45 and 0.6 nm. This increase in permeability is reversible upon treatment with dithioerythritol. Blocking of membrane thiol groups with N-ethylmaleimide protects the membranes against leak formation. The oxidation causes dithioerythritol-reversible modification of membrane proteins as indicated by the gel electrophoretic behavior. These modifications can also be suppressed by blocking the membrane thiol groups with N-ethylmaleimide. About half of the membrane methionine is oxidized to acid hydrolysis-stable derivatives. A fast saturating increase in diene conjugation was observed in whole cells but not in isolated membranes, with only minor degradation of fatty acid chains. The oxidation of cell membrane lipids as well as oxidation of cell surface carbohydrates are not involved in leak formation. Taken together with earlier data (Deuticke, B., Poser, B., Lütkemeier, P. and Haest, C.W.M. (1983) Biochim. Biophys. Acta 731, 196-210), these findings indicate that formation of disulfide bonds by different oxidative mechanisms results in leaks with similar properties.
Collapse
|
26
|
|
27
|
Abstract
The specificity of the glycerol facilitator (glpF) of Escherichia coli was studied with an osmotic method. This transport system allowed the entry of polyols (glycerol and erythritol), pentitols, and hexitols. The analogous sugars were not transported. However, urea, glycine, and DL-glyceraldehyde could use this pathway to enter the cell. The glpF protein allowed the rapid efflux of preequilibrated xylitol. Glycerol surprisingly did not inhibit the uptake of xylitol, and xylitol only slightly reduced the uptake of glycerol. The observation and the insensitivity of the xylitol transport to low temperature suggest that the facilitator behaves as a membrane channel.
Collapse
|
28
|
|
29
|
Abstract
Lipase, nuclease, and protease activities could be shown primarily with the purified outer membrane fraction from Serratia marcescens. These activities increased and decreased in the different compartments dependent on the growth phase of the cell culture. Penicillin-hydrolyzing activity was exclusively demonstrated with the outer membrane fraction.
Collapse
|
30
|
Abstract
Several lines of evidence suggest that sucrose is transported by the lactose carrier of Escherichia coli. Entry of sucrose was monitored by an osmotic method which involves exposure of cells to a hyperosmotic solution of disaccharide (250 mM). Such cells shrink (optical density rises), and if the solute enters the cell, there is a return toward initial values (optical density falls). By this technique sucrose was found to enter cells at a rate approximately one third that of lactose. In addition, the entry of [14C]sucrose was followed by direct analysis of cell contents after separation of cells from the medium by centrifugation. Sucrose accumulated within the cell to a concentration 160% of that in the external medium. The addition of sucrose to an anaerobic suspension of cells resulted in a small alkalinization of the external medium. These data are consistent with the view that the lactose carrier can accumulate sucrose by a proton cotransport system. The carrier exhibits a very low affinity for the disaccharide (150 mM) but a moderately rapid Vmax.
Collapse
|
31
|
Heller KB. Outer membrane of Serratia marcescens: apparent molecular weights of heat-modifiable proteins in gels with different acrylamide concentrations. J Bacteriol 1979; 137:670-2. [PMID: 368037 PMCID: PMC218500 DOI: 10.1128/jb.137.1.670-672.1979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The major proteins from the outer membrane of Serratia marcescens SM-6 are heat modifiable. The analysis of their apparent molecular weights in gels with different concentrations of acrylamide and the results obtained by radioactive labeling indicate that the major proteins are covalently linked to carbohydrate moieties.
Collapse
|
32
|
Heller KB, Höfer M. Temperature dependence of the apparent affinity and the maximum velocity of the membrane-bound monosaccharide transport system in the yeast Rhodotorula gracilis. Biochim Biophys Acta 1978; 514:172-7. [PMID: 568938 DOI: 10.1016/0005-2736(78)90087-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Analysis of the temperature dependence of the monosaccharide transport system in the yeast Rhodotorula gracilis (ATCC 26194, CBS 6681), as tested with D-xylose, revealed that the apparent affinity of the transport system, measured as the reciprocal of the half-saturation constant KT, increased when transport velocity was stimulated by temperature (15--30 degrees C) and decreased when the rate of uptake was reduced at temperatures aboce 30 degrees C. Breaks in Arrhenius plots were accompanied by corresponding breaks in van't Hoff plots. Whereas untreated cells exhibited in the van't Hoff plot a discontinuity at 28--30 degrees C this was not observed in heat-treated cells (at either 37 or 45 degrees C). In heat-treated cells the maximum transport velocity was always lower and the apparent affinity higher than in untreated cells at the same temperature; the optimum temperature for both transport velocity and apparent affinity was shifted to higher values. The data are interpreted in terms of a reversible phase transition of membrane lipids effecting an irreversible alteration of membrane structure. The temperature-induced reversible alkalinization of unbuffered yeast suspensions supports this interpretation.
Collapse
|
33
|
Heller KB. Apparent molecular weights of a heat-modifiable protein from the outer membrane of Escherichia coli in gels with different acrylamide concentrations. J Bacteriol 1978; 134:1181-3. [PMID: 350841 PMCID: PMC222370 DOI: 10.1128/jb.134.3.1181-1183.1978] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The apparent molecular weights of the two forms of a heat-modifiable protein from the outer membrane of Escherichia coli K-12, estimated in gels with different concentrations of acrylamide, indicate that the protein binds excess amounts of sodium dodecyl sulfate, possibly due to large beta structures before boiling.
Collapse
|
34
|
Winkler U, Heller KB, Folle B. Pleiotropic consequences of mutations towards antibiotic-hypersensitivity in Serratia marcescens. Arch Microbiol 1978; 116:259-68. [PMID: 348145 DOI: 10.1007/bf00417849] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Various mutants (oxas) were isolated from Serratia marcescens SM-6 by selecting for hypersensitivity towards oxacillin. All mutants found are highly pleiotropic and able to yield spontaneous revertants which behave like the wild-type. Mutant W 1421 mostly studied shows the following phenotypic properties not found in the wild-type: (1) The growth is hypersensitive to various antibiotics, detergents and dyes which differ remarkably in their chemical structure and antibacterial action-mechanism, (2) the cells can be easily solubilized by 0;05% Sodium-dodecyl-sulfate, (3) the cells allow the adsorption of the rough-mutant specific Salmonella phage 6SR; (4) strong cellular binding of crystal violet, (5) agglutination of the cells in 0.3% auramin solution and (6) reduced formation of red pigment. Strain W 1421 is assumed to be a lipopolysaccharide-defective mutant. The outer membrane of mutant W 1421 analyzed by Sodium-dodecylsulfate-polyacrylamide gel electrophoresis possesses a single protein less than that of the wild-type. Mutant W 1421 is further characterized by its low exolipase activity; exoprotease and exonuclease activities are as in the wild-type. This specific exoenzyme deficiency can be overcome either by backmutation to oxacillin-resistance or by growing mutant W 1421 in a medium supplemented with certain non-metabolizable polysaccharides, e.g. glycogen or pectin B. Both polysaccharides increase the exolipase activity of the wild-type too.
Collapse
|
35
|
Heller KB, Höfer M. Temperature dependence of the energy-linked monosaccharide transport across the cell membrane of Rhodotorula gracilis. J Membr Biol 1975; 21:261-71. [PMID: 1168724 DOI: 10.1007/bf01941071] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The temperature dependence of the active monosaccharide transport across the cell membrane of the yeast Rhodotorula gracilis has been studied between 0 and 55 degrees C with D-xylose as the transported substrate: (i) Between 0 and 10 degrees C there is virtually no transport. (ii) The initial velocity of transport increases exponentially from 15 to 30 degrees C (deltaE equal to 32 plus or minus 2 kcal/mol). (iii) At 30 degrees C a sharp "break" occurs in the Arrhenius plot and with increasing temperature the transport becomes inactivated, with a positive slope of the corresponding straight line ("deltaE equal to minus 15 kcal/mol"). (iv) In the temperature range of 50-55 degrees C, both the transport and the metabolic activity cease. In order to account for the abrupt changes of the membrane permeability, we attempted to ascribe them to phase transitions in the membrane structure: the first one, between 10 and 15 degrees C, to the crystalline: liquid-crystalline phase change; the second one, around 30 degrees C, to a change from highly ordered (low entropy) to less ordered (high entropy) membrane structure. Whereas the former phase transition is reversible, the latter appears to be irreversible. Arrhenius plots of the cell respiration exhibit a "break" at 30 degrees C, as well. However, at higher temperatures there is no thermal inactivation of the respiratory activity. The importance of a proper organization of the cell membrane constituents for the efficient transport function is discussed.
Collapse
|
36
|
Heller KB, Höfer M. Proceedings: The effect of nystatin on the monosaccharide transport system in Rhodotorula gracilis. Hoppe Seylers Z Physiol Chem 1974; 355:1203-4. [PMID: 4477746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|