7 results on '"Šlaus, Nika"'
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2. Bilateral Meningioma: A Case Report and Review of the Literature
- Author
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Bukovac, Anja, primary, Panić, Hana, additional, Mrgan, Tomislava, additional, Šlaus, Nika, additional, Kafka, Anja, additional, Njirić, Niko, additional, and Pećina-Šlaus, Nives, additional
- Published
- 2022
- Full Text
- View/download PDF
3. Microsatellite instability signatures in human meningioma
- Author
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Šlaus, Nika, Petanjek, Petra, Tuđen, Amadea, Brlek, Petar, Kafka, Anja, and Bukovac, Anja
- Subjects
congenital, hereditary, and neonatal diseases and abnormalities ,meningioma ,microsatellite instability (MSI) ,mismatch repair (MMR), MLH1, loss of heterozygosity ,nutritional and metabolic diseases ,neoplasms ,digestive system diseases - Abstract
The defect in the functioning of the postreplicative mismatch repair (MMR) increases the genome’s overall mutational frequency and is reflected in a phenomenon called microsatellite instability (MSI). MSI can be detected by the microsatellite gene markers and the instability is evident from different numbers of microsatellite repeats in tumor tissue when compared to normal blood DNA. One of the major mismatch repair genes - MLH1 is responsible for MMR and when mutated or lost the system does not work correctly. We decided to investigate if MMR gene MLH1 is associated with the overall frequency of MSI. The overall MSI on 7 different loci in the genome of 35 meningioma patients of different histopathological subtypes and grades was investigated and compared to large deletions of the MLH1 gene. Microsatellite markers used were: D3S1611, D16S3399, D3S1262, D16S752, D16S3025, D18S66, and D18S819. Large deletion of MLH1 was analyzed by the loss of heterozygosity (LOH) method. A relatively high presence of microsatellite instability in meningioma patients, when compared to their autologous blood DNA, was detected. 25 patients showed MSI at least one of the seven different investigated loci of the genome (71.4%). MLH1 was struck by large deletion or LOH in 7 meningioma cases (20%). When comparing overall MSI to the LOH of the MLH1 gene we found that four cases that harbored MLH1 deletions also showed MSI (57.1%). However, MSI was not associated with any histological subtype and was evenly distributed among different grades. The found deletions of the MLH1 gene indicate malfunctioning of the MMR system in investigated meningiomas. This was further supported by the relatively high overall incidence of MSI. Our study helps to better understand the genetic profile of human meningiomas and may shed information on the clinical course, response to therapy, and survival outcomes.
- Published
- 2021
4. Arthropathia ochronotica
- Author
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Matoković, Damir, Plečko, Mihovil, Crnogaća, Krešimir, Šlaus, Nika, Žulj, Boris, Pećina, Marko, Matoković, Damir, Plečko, Mihovil, Crnogaća, Krešimir, Šlaus, Nika, Žulj, Boris, and Pećina, Marko
- Abstract
Alkaptonuria (AKU) is a rare autosomal recessive metabolic disease caused by a disorder of phenylala- nine and tyrosine metabolism, resulting in accumulation and deposition of homogentisic acid (HGA) in the body. This deposition further causes progressive functional disorders in different organ systems, with the locomotor system being the most affected one. A specific triad of symptoms occurs in patients suffering from AKU: 1. at birth, a change of urine color is present when urine is exposed to air, 2. oc- currence of dark pigmentations in connective tissues becomes visible over time, 3. complications of the locomotor, urogenital and cardiovascular systems present gradually. Arthropathia ochronotica occurs in patients suffering from AKU due to precipitation and deposition of HGA in the joint tissue (cartilage, tendons, ligaments, menisci, etc.). The accumulation can be seen as small foci of blue-black pigmentations. HGA deposits in collagen fibers, causing tendons and liga- ments thickening. This causes them to be less resistant to mechanical forces, resulting in frequent rup- tures caused by minimal trauma. Also, the deposition facilitates cartilage degeneration, often requiring an operative treatment. The knees are the most commonly affected joints, while changes can be seen in the spine and other large joints. As there is no specific treatment, alleviation of symptoms is the only treatment option. It has the goal of increasing individual functionality and quality of life. As an option for end-stage treatment, joint replacement surgery proved to be effective. In the future, an enzyme replacement therapy or gene therapy may be developed to treat AKU successfully., Alkaptonurija (AKU) je rijetka autosomno recesivna metabolička bolest uzrokovana poremećajem metabolizma fenilalanina i tirozina, što rezultira nakupljanjem i taloženjem homogentizinske kiseline (HGA) u tijelu. Ovo taloženje uzrokuje progresivne funkcionalne poremećaje u različitim organskim sustavima, pri čemu je najčešće zahvaćen lokomotorni sustav. Specifična trijada simptoma javlja se u bolesnika koji pate od AKU: 1. pri rođenju je vidljiva promjena boje urina kada je urin izložen zraku, 2. pojava tamnih pigmentacija u vezivnom tkivu s vremenom postaje vidljiva, 3. postepeno se razvijaju komplikacije koje zahvaćaju lokomotorni, urogenitalni i kardiovaskularni sustav. Artropatija ohronotica javlja se u bolesnika koji pate od AKU zbog taloženja HGA u zglobnom tkivu (hrskavica, tetive, ligamenti, meniskusi itd.). Akumulacija se može vidjeti kao mala žarišta plavo-crnih pigmentacija. HGA se taloži u kolagenskim vlaknima, uzrokujući zadebljanje tetiva i ligamenata. Zbog toga su ona manje otporna na mehaničke sile, što rezultira čestim puknućima uzrokovanim minimalnom traumom. Također, taloženje ubrzava degeneraciju hrskavice, što dovodi do češće potrebe za operativnim liječenjem. Koljena su najčešće zahvaćena, dok se promjene također mogu vidjeti na kralježnici i drugim velikim zglobovima. Kako ne postoji specifično liječenje, ublažavanje simptoma jedina je opcija liječenja. Cilj mu je povećati individualnu funkcionalnost i kvalitetu života. Kao opcija za završnu fazu liječenja, ugradnja umjetnih zglobova pokazala se sigurnom i učinkovitom. U budućnosti se očekuje razvoj enzimske ili genske terapije za uspješno ciljano liječenje AKU.
- Published
- 2020
5. Meralgia Paresthetica – Lateral Femoral Cutaneous Nerve Entrapment
- Author
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Madiraca Glasović, Dora, primary, Šlaus, Nika, additional, Šitum, Mirna, additional, and Pećina, Marko, additional
- Published
- 2021
- Full Text
- View/download PDF
6. Arthropathia ochronotica
- Author
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Matoković, Damir, primary, Plečko, Mihovil, additional, Crnogaća, Krešimir, additional, Šlaus, Nika, additional, Žulj, Boris, additional, and Pećina, Marko, additional
- Published
- 2020
- Full Text
- View/download PDF
7. Meralgia Paresthetica - Lateral Femoral Cutaneous Nerve Entrapment.
- Author
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Glasović, Dora Madiraca, Šlaus, Nika, Šitum, Mirna, and Pećina, Marko
- Subjects
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FEMORAL nerve , *SKIN innervation , *ENTRAPMENT neuropathies , *INTRA-abdominal pressure , *DIAGNOSIS , *SYMPTOMS - Abstract
Meralgia paresthetica (MP) is a neuropathy that involves pain and sensory symptoms in the distribution of the lateral femoral cutaneous nerve and is mostly caused by entrapment of the lateral femoral cutaneous nerve. The etiology of MP includes pregnancy, trauma, tumors, surgical complications and other conditions with increased intraabdominal pressure. The diagnosis of MP is usually based primarily upon clinical signs and symptoms, but other diagnostic tools can be used in patients with atypical clinical presentations. Treatment focuses on relieving symptoms caused by nerve compression and usually involves conservative approach. Surgical treatment may be considered it conservative methods fail. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
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