Ulf Klappe

Ulf Klappe
  • Doctor of Medicine
  • PhD Student at Karolinska Institutet

About

16
Publications
2,115
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230
Citations
Current institution
Karolinska Institutet
Current position
  • PhD Student

Publications

Publications (16)
Article
Full-text available
Cardiac troponin T (cTnT) is elevated in neuromuscular conditions without apparent cardiac disease, including Amyotrophic Lateral Sclerosis (ALS). The reason for this increase is unclear. Since cTnT is found in both cardiomyocytes and skeletal muscle cells, we aimed to investigate the latter as a possible cTnT source. We examined the correlation of...
Article
Objective: To evaluate the prognostic potential of neurofilament medium chain (NfM) in CSF from patients with ALS and explore its relationship with the extensively studied neurofilament light chain (NfL) and phosphorylated heavy chain (pNfH). Method: CSF levels of NfL, NfM, and pNfH were analyzed in 235 samples from patients with ALS, ALS mimics...
Article
Background Amyotrophic lateral sclerosis (ALS) represents a complex syndrome characterized by motor, psychiatric, and cognitive symptoms, where associations between cellular immune features and non-motor manifestations remain unknown. Methods In this cohort study, we enrolled 250 incident people with ALS (pwALS) assessed with the Hospital Anxiety...
Preprint
Objective: To evaluate the prognostic potential of neurofilament medium chain (NfM) in CSF from patients with ALS and explore its relationship with the extensively studied neurofilament light chain (NfL) and phosphorylated heavy chain (pNfH). Method: CSF levels of NfL, NfM, and pNfH were analysed in 235 samples from patients with ALS, ALS mimics, a...
Article
Full-text available
Background This study was an introduction to the Swedish ALSrisc Study and explored the association of lifestyle and medical conditions, with risk and progression of amyotrophic lateral sclerosis (ALS). Methods We included 265 newly diagnosed ALS patients during 2016–2022 in Stockholm and 207 ALS-free siblings and partners of the patients as contr...
Article
Full-text available
Background Amyotrophic lateral sclerosis (ALS) is a multisystem disorder with not only motor symptoms but also extra-motor features including cognitive impairment. The most common cognitive profile observed in patients with ALS includes deficits in executive function, language, and social cognition. However, longitudinal studies on cognitive change...
Article
Full-text available
Objective This systematic review aims to outline the use of population and disease registries for clinical trial pre-screening. Materials and methods The search was conducted in the time period of January 2014 to December 2022 in three databases: MEDLINE, Embase, and Web of Science Core Collection. References were screened using the Rayyan softwar...
Article
Full-text available
Objective: To describe the diagnostic and prognostic performance, and longitudinal trajectories, of potential biomarkers of neuroaxonal degeneration and neuroinflammation in amyotrophic lateral sclerosis (ALS). Methods: This case-control study included 192 incident ALS patients, 42 ALS mimics, 114 neurological controls, and 117 healthy controls...
Article
Full-text available
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease, involving neuroinflammation and T cell infiltration in the central nervous system. However, the contribution of T cell responses to the pathology of the disease is not fully understood. Here we show, by flow cytometric analysis of blood and cerebrospinal fluid (CSF) samples o...
Article
Full-text available
Objectives This retrospective cohort study aims to provide a comprehensive account of death in Swedish patients with ALS, including clinical status preceding death, the death setting, as well as symptoms. Methods: The study presents detailed information on a cohort of patients with ALS from Stockholm, Sweden, deceased in 2018-2020. In addition, sel...
Article
Full-text available
Objective: To provide a detailed and differentiated description of the path to receiving the correct amyotrophic lateral sclerosis (ALS) diagnosis, including delay times, referrals, alternate diagnoses, and clinical progression. Methods: Medical records until the date of ALS diagnosis were reviewed and linked to the Swedish Motor Neuron Disease Qua...
Article
Full-text available
Objective: To test two hypotheses: (1) partners of ALS patients have higher mortality due to outcomes related to psychological distress, and (2) parents and siblings of ALS patients have higher mortality due to diseases that co-occur with ALS. Methods: We performed a nationwide, register-based cohort study in Sweden. We included ALS-free partners,...
Article
Full-text available
Objective: To test whether high-sensitivity cardiac troponin T (hs-cTnT) could act as a diagnostic or prognostic biomarker in ALS, comparing hs-cTnT to neurofilament light (NfL). Methods: We performed a case-control study, including 150 ALS patients, 28 ALS mimics, and 108 healthy controls, and a follow-up study of the ALS patients, during 2014–202...
Article
Full-text available
Apart from well-defined factors in neuronal cells¹, only a few reports consider that the variability of sporadic amyotrophic lateral sclerosis (ALS) progression can depend on less-defined contributions from glia2,3 and blood vessels⁴. In this study we use an expression-weighted cell-type enrichment method to infer cell activity in spinal cord sampl...

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