Publications by authors named "Lappalainen M"

Article Synopsis
  • * A surgical procedure called distal partial ulnectomy with ulnar styloid process excision was performed, and the biopsy confirmed it was an aneurysmal bone cyst (ABC).
  • * The surgery resulted in excellent limb function with no signs of lameness or complications for up to 24 weeks, and this is the first report of this surgical approach being used in cats.
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The SARS-CoV-2 genome occupies a unique place in infection biology - it is the most highly sequenced genome on earth (making up over 20% of public sequencing datasets) with fine scale information on sampling date and geography, and has been subject to unprecedented intense analysis. As a result, these phylogenetic data are an incredibly valuable resource for science and public health. However, the vast majority of the data was sequenced by tiling amplicons across the full genome, with amplicon schemes that changed over the pandemic as mutations in the viral genome interacted with primer binding sites.

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Background: Surgery, needle fasciotomy, and collagenase injection are used to treat Dupuytren contracture. The treatment decision requires balancing initial morbidity and costs of surgery against its potential long-term benefits over needle fasciotomy and collagenase.

Objective: To compare the effectiveness of surgery, needle fasciotomy, and collagenase injection at 3 months and 2 years (secondary time points of the trial).

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The aim of this integrative literature review is to describe the information provided to patients with psychotic disorders regarding their medication and to consider the effectiveness of providing such information. Searches of four databases identified 16 articles that met inclusion criteria. Results indicated that patients had relatively poor knowledge about their medications overall.

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Monkeypox virus was imported into Finland during late May-early June 2022. Intrahost viral genome variation in a sample from 1 patient comprised a major variant with 3 lineage B.1.

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Purpose: Congenital cytomegalovirus infection (cCMV) is the most frequent nonhereditary cause for sensorineural hearing loss (SNHL) in children. Data on vestibular function in children with cCMV are, however, scarce, although some evidence for cCMV-associated vestibular dysfunction exists. In this prospective cohort study, we evaluated long-term vestibular function and hearing outcomes in a cohort of children with cCMV.

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Background: Bacterial infections complicating COVID-19 are rare but present a challenging clinical entity. The aim of this study was to evaluate the incidence, aetiology and outcome of severe laboratory-verified bacterial infections in hospitalised patients with COVID-19.

Methods: All laboratory-confirmed patients with COVID-19 admitted to specialised healthcare hospitals in the Capital Province of Finland during the first wave of COVID-19 between 27 February and 21 June 2020 were retrospectively studied.

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Article Synopsis
  • * This research involved the collection and analysis of 258 air samples and 252 surface samples from COVID-19 patients in hospitals and at home, revealing similar contamination levels in both settings.
  • * Significant air contamination was noted in a hospital area, even with limited patients present, and positive samples were found even after patients developed immunity, underscoring the need for continued infection control measures in diverse environments.
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DsbA leader peptide targets proteins for cotranslational translocation by signal recognition particle (SRP) pathway and has been the standard signal sequence for filamentous phage display of fast-folding Designed Ankyrin Repeat Proteins (DARPins). In contrast, translocation of DARPins via the post-translational pathway, for example, with the commonly used PelB leader, has been reported to be highly inefficient. In this study, two PelB signal sequence libraries were screened covering different regions of the leader peptide for identifying mutants with improved display of DARPins on phage.

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Background: Independent evaluations that deploy clinical patient samples are important in assessing the performance of commercial tests used for serological screening of viral hepatitis and HIV in clinical laboratories.

Objectives: We compared the analytical performance of Abbott Architect i2000SR, Abbott Alinity i, DiaSorin Liaison XL, and Siemens Atellica for the following analytes: anti-HAV IgG/anti-HAV total, anti-HAV IgM, HBsAg, anti-HBc IgM, Anti-HBc, HBeAg, anti-HBe, anti-HBs, anti-HCV, and HIV Ag/Ab. In addition, anti-HBc IgM, HBeAg, and anti-HBe were evaluated for Abbott Architect, Abbott Alinity and DiaSorin Liaison.

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Article Synopsis
  • SARS-CoV-2, the virus responsible for COVID-19, was first detected in Finland in January 2020 and has since caused fewer infections compared to other European countries.
  • A study analyzed the virus's lineage origins and dynamics in Finland, revealing 42 independent introductions in spring 2020, primarily from Italy, Austria, and Spain.
  • Findings indicated that one introduction from Spain caused about a third of the cases in Finland during that period, highlighting the impact of travel on virus spread and the importance of early public health measures.
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Objective: To estimate scent dogs' diagnostic accuracy in identification of people infected with SARS-CoV-2 in comparison with reverse transcriptase polymerase chain reaction (RT-PCR). We conducted a randomised triple-blinded validation trial, and a real-life study at the Helsinki-Vantaa International Airport, Finland.

Methods: Four dogs were trained to detect COVID-19 using skin swabs from individuals tested for SARS-CoV-2 by RT-PCR.

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Article Synopsis
  • - The Omicron variants BA.1 and BA.1.1 were first introduced to Finland in early December 2021.
  • - Within just three weeks, Omicron became the dominant variant in the capital region, surpassing Delta.
  • - Genetic analysis revealed a significant community transmission of a large cluster of the BA.1.1 variant.
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UEFA Euro 2020 tournament was scheduled to take place in 2020, but due to the coronavirus disease 2019 (COVID-19) pandemic was rescheduled to start on 11 June 2021. Approximately 4500 Finnish spectators participated, travelling between Finland and Russia during the period of 16 to 30 June to attend matches played on 16 and 21 June. A total of 419 persons returning from Russia or with a connection to Russia were detected positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

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Objectives: Cytomegalovirus (CMV) is the most common congenital infection affecting about 0.6% of all newborns in developed countries. Vertical transmission to fetus can take place either after maternal primary or non-primary CMV infection during pregnancy.

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SARS-CoV-2 RNA can be detected in respiratory samples for weeks after onset of COVID-19 disease. Therefore, one of the diagnostic challenges of PCR positive cases is differentiating between acute COVID-19 disease and convalescent phase. The presence of SARS-CoV-2 nucleocapsid antigen in serum and plasma samples of COVID-19 patients has been demonstrated previously.

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Severe acute respiratory syndrome coronavirus 2 Alpha and Beta variants became dominant in Finland in spring 2021 but had diminished by summer. We used phylogenetic clustering to identify sources of spreading. We found that outbreaks were mostly seeded by a few introductions, highlighting the importance of surveillance and prevention policies.

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The study aim was to determine the benefit of the measurement of serum caspase-cleaved cytokeratin-18 (CK-18) fragment as a prognostic marker of febrile neutropenia (FN) in hematological patients. The study population consisted of 86 consecutive patients with FN who received intensive chemotherapy for hematological malignancy at the adult hematology ward of Kuopio University Hospital. Twenty-three patients (27%) had acute myeloid leukemia, and 63 patients (73%) were autologous stem cell transplant recipients.

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Background: Understanding the false negative rates of SARS-CoV-2 RT-PCR testing is pivotal for the management of the COVID-19 pandemic and it has implications for patient management. Our aim was to determine the real-life clinical sensitivity of SARS-CoV-2 RT-PCR.

Methods: This population-based retrospective study was conducted in March-April 2020 in the Helsinki Capital Region, Finland.

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Article Synopsis
  • The primary diagnosis of SARS-CoV-2 relies on detecting viral RNA in nasal swabs, while analyzing antibodies plays a crucial role in diagnostics and estimating prevalence.
  • Researchers developed enzyme immunoassays (EIA) to detect antibodies against different SARS-CoV-2 proteins and compared neutralizing activity with traditional IgE test results.
  • The study found that using N and RBD proteins improved sensitivity for detecting immune responses in COVID-19 patients, indicating that combined analysis of specific antibodies can enhance serological diagnostics for COVID-19.
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Objectives: To evaluate the effectiveness of safety guidelines in the workplace, the authors analyzed the work-related exposure to SARS-CoV-2 and the source of COVID‑19 infections among healthcare workers (HCWs), together with the use of personal protective equipment (PPE).

Material And Methods: A cross-sectional prospective study was conducted in tertiary hospitals in the Uusimaa region, Finland, with 1072 volunteers being enrolled in the study from among the HCWs at the Helsinki University Hospital. Overall, 866 (80.

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Article Synopsis
  • Researchers found three human protoparvoviruses (bufavirus, tusavirus, cutavirus) in stool samples linked to gastroenteritis and respiratory infections in patients from Finland, Latvia, and Malawi.
  • The study revealed that cutavirus (CuV) was more common in older adults with gastroenteritis and in children from Latvia and Malawi than Finnish children, with CuV DNA detected in stool samples of patients without other known pathogens.
  • Additionally, CuV DNA was observed in nasopharyngeal samples of children with respiratory tract infections, and tusavirus was identified in the stools of two adults, marking significant new findings about these viruses’ presence in different populations.
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Introduction: The COVID-19 pandemic has led to high demand of diagnostic tools. Rapid antigen detection tests have been developed and many have received regulatory acceptance such as CE IVD or FDA markings. Their performance needs to be carefully assessed.

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Mitigation of the ongoing coronavirus disease 2019 (COVID-19) pandemic requires reliable and accessible laboratory diagnostic services. In this study, the performance of one laboratory-developed test (LDT) and two commercial tests, cobas SARS-CoV-2 (Roche) and Amplidiag COVID-19 (Mobidiag), were evaluated for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in respiratory specimens. A total of 183 specimens collected from suspected COVID-19 patients were studied with all three methods to compare their performance.

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