Johan Wikström

Prof. Dr. Johan Wikström

orcid

Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2014 in Placenta
Verified
Journal Article
Closed access
SSS. Sohlberg
S. Sohlberg
AMA. Mulic-Lutvica
A. Mulic-Lutvica
PLP. Lindgren
P. Lindgren
FOF. Ortiz-Nieto
F. Ortiz-Nieto
AWA.-K. Wikström
A.-K. Wikström
JWJohan Wikström
Johan Wikström

1 October 2014 in NeuroImage
Verified
Journal Article
Closed access
JPJonas Persson
Jonas Persson
RSR. Nathan Spreng
R. Nathan Spreng
GTGary Turner
Gary Turner
AHAgneta Herlitz
Agneta Herlitz
AMArvid Morell
Arvid Morell
HSHedvig Söderlund
Hedvig Söderlund

1 September 2012 in Hormones and Behavior
Verified
Journal Article
Closed access
MGMalin Gingnell
Malin Gingnell
AMArvid Morell
Arvid Morell
EBElin Bannbers
Elin Bannbers
JWJohan Wikström
Johan Wikström
IPInger Sundström Poromaa
Inger Sundström Poromaa

15 January 2017 in Journal of Neurotrauma
Verified
Journal Article
Open access
SHSami Abu Hamdeh
Sami Abu Hamdeh
NMNiklas Marklund
Niklas Marklund
MLMarianne Lannsjö
Marianne Lannsjö
THTim Howells
Tim Howells
RRRaili Raininko
Raili Raininko
PEPer Enblad
Per Enblad
Clinical outcome after traumatic diffuse axonal injury (DAI) is difficult to predict. In this study, three magnetic resonance imaging (MRI) sequences were used to quantify the anatomical distribution of lesions, to grade DAI according to the Adams grading system, and to evaluate the value of lesion localization in combination with clinical prognostic factors to improve outcome prediction. Thirty patients (mean 31.2 years ±14.3 standard deviation) with severe DAI (Glasgow Motor Score [GMS] <6) examined with MRI within 1 week post-injury were included. Diffusion-weighted (DW), T2*-weighted gradient echo and susceptibility-weighted (SWI) sequences were used. Extended Glasgow outcome score was assessed after 6 months. Number of DW lesions in the thalamus, basal ganglia, and internal capsule and number of SWI lesions in the mesencephalon correlated significantly with outcome in univariate analysis. Age, GMS at admission, GMS at discharge, and low proportion of good monitoring time with cerebral perfusion pressure <60 mm Hg correlated significantly with outcome in univariate analysis. Multivariate analysis revealed an independent relation with poor outcome for age ( p = 0.005) and lesions in the mesencephalic region corresponding to substantia nigra and tegmentum on SWI ( p = 0.008). We conclude that higher age and lesions in substantia nigra and mesencephalic tegmentum indicate poor long-term outcome in DAI. We propose an extended MRI classification system based on four stages (stage I—hemispheric lesions, stage II—corpus callosum lesions, stage III—brainstem lesions, and stage IV—substantia nigra or mesencephalic tegmentum lesions); all are subdivided by age (≥/<30 years).

16 September 2017 in Acta Neurochirurgica
Verified
Journal Article
Open access
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ERElham Rostami
Elham Rostami
PNPetra Witt Nyström
Petra Witt Nyström
SLSylwia Libard
Sylwia Libard
JWJohan Wikström
Johan Wikström
OCOlivera Casar-Borota
Olivera Casar-Borota
OGOlafur Gudjonsson
Olafur Gudjonsson
Craniopharyngiomas are histologically benign but locally aggressive tumors in the sellar region that may cause devastating neurological and endocrine deficits. They tend to recur following surgery with high morbidity; hence, postoperative radiotherapy is recommended following sub-total resection. BRAFV600E mutation is the principal oncogenic driver in the papillary variant of craniopharyngiomas. Recently, a dramatic tumor reduction has been reported in a patient with BRAFV600E mutated, multiply recurrent papillary craniopharyngioma using a combination therapy of BRAF inhibitor dabrafenib and MEK inhibitor trametinib. Here, we report on near-radical reduction of a growing residual BRAFV600E craniopharyngioma using the same neoadjuvant therapy.