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Items: 33


Effects of an over-the-counter lactic-acid containing intra-vaginal douching product on the vaginal microbiota.

van der Veer C, Bruisten SM, van Houdt R, Matser AA, Tachedjian G, van de Wijgert JHHM, de Vries HJC, van der Helm JJ.

BMC Microbiol. 2019 Jul 25;19(1):168. doi: 10.1186/s12866-019-1545-0.


Vaginal herb use and Chlamydia trachomatis infection: cross-sectional study among women of various ethnic groups in Suriname.

Van der Helm JJ, Schim van der Loeff MF, de Vries E, van der Veer C, Grünberg AW, Mans D, de Vries HJC.

BMJ Open. 2019 May 16;9(5):e025417. doi: 10.1136/bmjopen-2018-025417.


Effect of incident hepatitis C infection on CD4+ cell count and HIV RNA trajectories based on a multinational HIV seroconversion cohort.

van Santen DK, van der Helm JJ, Touloumi G, Pantazis N, Muga R, Gunsenheimer-Bartmeyer B, Gill MJ, Sanders E, Kelleher A, Zangerle R, Porter K, Prins M, Geskus RB; CASCADE Collaboration within EuroCoord.

AIDS. 2019 Feb 1;33(2):327-337. doi: 10.1097/QAD.0000000000002040.


Men who have sex with men more often chose daily than event-driven use of pre-exposure prophylaxis: baseline analysis of a demonstration study in Amsterdam.

Hoornenborg E, Achterbergh RC, van der Loeff MFS, Davidovich U, van der Helm JJ, Hogewoning A, van Duijnhoven YT, Sonder GJ, de Vries HJ, Prins M; Amsterdam PrEP Project team in the HIV Transmission Elimination AMsterdam Initiative.

J Int AIDS Soc. 2018 Mar;21(3):e25105. doi: 10.1002/jia2.25105.


What Is the Optimal Time to Retest Patients With a Urogenital Chlamydia Infection? A Randomized Controlled Trial.

van der Helm JJ, Koekenbier RH, van Rooijen MS, Schim van der Loeff MF, de Vries HJC.

Sex Transm Dis. 2018 Feb;45(2):132-137. doi: 10.1097/OLQ.0000000000000706.


A33 The cervico-vaginale microbiota in chlamydia trachomtais notified women: a case-control study at the sexually transmitted infection outpatient clinic in Amsterdam.

van der Veer C, Bruisten SM, van der Helm JJ, de Vries HJC, van Houdt R.

Virus Evol. 2017 Mar 5;3(Suppl 1). pii: vew036.032. doi: 10.1093/ve/vew036.032. eCollection 2017 Mar. No abstract available.


Low Prevalence of Urethral Lymphogranuloma Venereum Infections Among Men Who Have Sex With Men: A Prospective Observational Study, Sexually Transmitted Infection Clinic in Amsterdam, the Netherlands.

de Vrieze NHN, Versteeg B, Bruisten SM, van Rooijen MS, van der Helm JJ, de Vries HJC.

Sex Transm Dis. 2017 Sep;44(9):547-550. doi: 10.1097/OLQ.0000000000000657.


HIV and hepatitis C treatment uptake among people who use drugs participating in the Amsterdam Cohort Studies, 1985-2015.

van Santen DK, van der Helm JJ, Lindenburg K, Schim van der Loeff M, Prins M.

Int J Drug Policy. 2017 Sep;47:95-101. doi: 10.1016/j.drugpo.2017.05.026. Epub 2017 Jun 9.


Design of a syndemic based intervention to facilitate care for men who have sex with men with high risk behaviour: the randomized controlled trial.

Achterbergh RCA, van der Helm JJ, van den Brink W, de Vries HJC.

BMC Infect Dis. 2017 Jun 6;17(1):398. doi: 10.1186/s12879-017-2474-x.


Lack of decline in hepatitis C virus incidence among HIV-positive men who have sex with men during 1990-2014.

van Santen DK, van der Helm JJ, Del Amo J, Meyer L, D'Arminio Monforte A, Price M, Béguelin CA, Zangerle R, Sannes M, Porter K, Geskus RB, Prins M; CASCADE Collaboration in EuroCoord.

J Hepatol. 2017 Aug;67(2):255-262. doi: 10.1016/j.jhep.2017.03.038. Epub 2017 Apr 12.


Is rectal douching and sharing douching equipment associated with anorectal chlamydia and gonorrhoea? A cross-sectional study among men who have sex with men.

Achterbergh R, van der Helm JJ, van den Boom W, Heijman T, Stolte IG, van Rooijen MS, de Vries H.

Sex Transm Infect. 2017 Sep;93(6):431-437. doi: 10.1136/sextrans-2016-052777. Epub 2017 Jan 20.


Trends in antimicrobial susceptibility for azithromycin and ceftriaxone in Neisseria gonorrhoeae isolates in Amsterdam, the Netherlands, between 2012 and 2015.

Wind CM, Schim van der Loeff MF, van Dam AP, de Vries HJ, van der Helm JJ.

Euro Surveill. 2017 Jan 5;22(1). pii: 30431. doi: 10.2807/1560-7917.ES.2017.22.1.30431.


Prevalence, determinants and genetic diversity of hepatitis C virus in the multi-ethnic population living in Suriname.

Mac Donald-Ottevanger MS, Vreden S, van der Helm JJ, van de Laar T, Molenkamp R, Dams E, Roosblad J, Codrington J, Hindori-Mohangoo AD, Prins M.

Virology. 2016 Dec;499:114-120. doi: 10.1016/j.virol.2016.07.001. Epub 2016 Sep 19.


The Cervicovaginal Microbiota in Women Notified for Chlamydia trachomatis Infection: A Case-Control Study at the Sexually Transmitted Infection Outpatient Clinic in Amsterdam, The Netherlands.

van der Veer C, Bruisten SM, van der Helm JJ, de Vries HJ, van Houdt R.

Clin Infect Dis. 2017 Jan 1;64(1):24-31. Epub 2016 Aug 27.


Molecular assessment of bacterial vaginosis by Lactobacillus abundance and species diversity.

Dols JA, Molenaar D, van der Helm JJ, Caspers MP, de Kat Angelino-Bart A, Schuren FH, Speksnijder AG, Westerhoff HV, Richardus JH, Boon ME, Reid G, de Vries HJ, Kort R.

BMC Infect Dis. 2016 Apr 23;16:180. doi: 10.1186/s12879-016-1513-3.


Characterisation of long-term non-progression of HIV-1 infection after seroconversion: a cohort study.

van der Helm JJ, Geskus R, Lodi S, Meyer L, Schuitemaker H, Gunsenheimer-Bartmeyer B, Monforte Ad, Olson A, Touloumi G, Sabin C, Porter K, Prins M; CASCADE Collaboration in EuroCoord.

Lancet HIV. 2014 Oct;1(1):e41-8. doi: 10.1016/S2352-3018(14)70016-5. Epub 2014 Sep 18.


Temporal trends in mortality among people who use drugs compared with the general Dutch population differ by hepatitis C virus and HIV infection status.

van Santen DK, van der Helm JJ, Grady BP, de Vos AS, Kretzschmar ME, Stolte IG, Prins M.

AIDS. 2014 Nov 13;28(17):2589-99. doi: 10.1097/QAD.0000000000000450.


Cross-sectional study of genital carcinogenic HPV infections in Paramaribo, Suriname: prevalence and determinants in an ethnically diverse population of women in a pre-vaccination era.

Geraets DT, Grünberg AW, van der Helm JJ, Schim van der Loeff MF, Quint KD, Sabajo LO, de Vries HJ.

Sex Transm Infect. 2014 Dec;90(8):627-33. doi: 10.1136/sextrans-2013-051384. Epub 2014 Jun 11.


Treatment as prevention among injecting drug users; extrapolating from the Amsterdam cohort study.

de Vos AS, Prins M, Coutinho RA, van der Helm JJ, Kretzschmar ME.

AIDS. 2014 Mar 27;28(6):911-8. doi: 10.1097/QAD.0000000000000190.


The role of Surinamese migrants in the transmission of Chlamydia trachomatis between Paramaribo, Suriname and Amsterdam, The Netherlands.

Bom RJ, van der Helm JJ, Bruisten SM, Grünberg AW, Sabajo LO, Schim van der Loeff MF, de Vries HJ.

PLoS One. 2013 Nov 13;8(11):e77977. doi: 10.1371/journal.pone.0077977. eCollection 2013.


Urogenital Chlamydia trachomatis infections among ethnic groups in Paramaribo, Suriname; determinants and ethnic sexual mixing patterns.

van der Helm JJ, Bom RJ, Grünberg AW, Bruisten SM, Schim van der Loeff MF, Sabajo LO, de Vries HJ.

PLoS One. 2013 Jul 17;8(7):e68698. doi: 10.1371/journal.pone.0068698. Print 2013.


Decline in incidence of HIV and hepatitis C virus infection among injecting drug users in Amsterdam; evidence for harm reduction?

de Vos AS, van der Helm JJ, Matser A, Prins M, Kretzschmar ME.

Addiction. 2013 Jun;108(6):1070-81. doi: 10.1111/add.12125. Epub 2013 Mar 13.


Distinct transmission networks of Chlamydia trachomatis in men who have sex with men and heterosexual adults in Amsterdam, The Netherlands.

Bom RJ, van der Helm JJ, Schim van der Loeff MF, van Rooijen MS, Heijman T, Matser A, de Vries HJ, Bruisten SM.

PLoS One. 2013;8(1):e53869. doi: 10.1371/journal.pone.0053869. Epub 2013 Jan 16.


Determinants of persistent spread of HIV in HCV-infected populations of injecting drug users.

de Vos AS, van der Helm JJ, Prins M, Kretzschmar ME.

Epidemics. 2012 Jun;4(2):57-67. doi: 10.1016/j.epidem.2012.01.001. Epub 2012 Jan 13.


Point-of-care test for detection of urogenital chlamydia in women shows low sensitivity. A performance evaluation study in two clinics in Suriname.

van der Helm JJ, Sabajo LO, Grunberg AW, Morré SA, Speksnijder AG, de Vries HJ.

PLoS One. 2012;7(2):e32122. doi: 10.1371/journal.pone.0032122. Epub 2012 Feb 29.


The hepatitis C epidemic among HIV-positive MSM: incidence estimates from 1990 to 2007.

van der Helm JJ, Prins M, del Amo J, Bucher HC, Chêne G, Dorrucci M, Gill J, Hamouda O, Sannes M, Porter K, Geskus RB; CASCADE Collaboration.

AIDS. 2011 May 15;25(8):1083-91. doi: 10.1097/QAD.0b013e3283471cce.


Clinical value of Treponema pallidum real-time PCR for diagnosis of syphilis.

Heymans R, van der Helm JJ, de Vries HJ, Fennema HS, Coutinho RA, Bruisten SM.

J Clin Microbiol. 2010 Feb;48(2):497-502. doi: 10.1128/JCM.00720-09. Epub 2009 Dec 9.


Multidrug-resistant Neisseria gonorrhoeae with reduced cefotaxime susceptibility is increasingly common in men who have sex with men, Amsterdam, the Netherlands.

de Vries HJ, van der Helm JJ, Schim van der Loeff MF, van Dam AP.

Euro Surveill. 2009 Sep 17;14(37). pii: 19330.


High performance and acceptability of self-collected rectal swabs for diagnosis of Chlamydia trachomatis and Neisseria gonorrhoeae in men who have sex with men and women.

van der Helm JJ, Hoebe CJ, van Rooijen MS, Brouwers EE, Fennema HS, Thiesbrummel HF, Dukers-Muijrers NH.

Sex Transm Dis. 2009 Aug;36(8):493-7. doi: 10.1097/OLQ.0b013e3181a44b8c.


TprK gene regions are not suitable for epidemiological syphilis typing.

Heymans R, Kolader ME, van der Helm JJ, Coutinho RA, Bruisten SM.

Eur J Clin Microbiol Infect Dis. 2009 Jul;28(7):875-8. doi: 10.1007/s10096-009-0717-5. Epub 2009 Feb 20.


No indication of Swedish Chlamydia trachomatis variant among STI clinic visitors in Amsterdam.

de Vries HJ, Catsburg A, van der Helm JJ, Beukelaar EC, Morré SA, Fennema JS, Thiesbrummel H.

Euro Surveill. 2007 Feb 8;12(2):E070208.3. No abstract available.


[Specialists and assistant physicians; disciplinary division of responsibilities].

van der Helm JJ.

Ned Tijdschr Geneeskd. 2001 Jul 21;145(29):1416-9. Review. Dutch.


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