Publications by authors named "Marti H"

Severity and outcome of strokes following cerebral hypoperfusion are significantly influenced by stress responses of the blood vessels. In this context, brain endothelial cells (BEC) regulate inflammation, angiogenesis and the vascular resistance to rapidly restore perfusion. Despite the relevance of these responses for infarct volume and tissue recovery, their transcriptional control in BEC is not well characterized.

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The obligate intracellular bacterial genus Chlamydia harbours species with zoonotic potential, particularly C. psittaci, causative agent of psittacosis, and C. abortus, which may lead to miscarriage in pregnant women.

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Porcine circovirus 3 (PCV-3) has emerged as a significant pathogen affecting global swine populations, yet its epidemiology and clinical implications remain incompletely understood. This retrospective study aimed to investigate the prevalence and histopathological features of PCV-3 infection in pigs from Switzerland, focusing on archival cases of suckling and weaner piglets presenting with suggestive lesions. An in-house qPCR assay was developed for detecting PCV-3 in frozen and formalin-fixed paraffin-embedded tissues, enhancing the national diagnostic capabilities.

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Background: The obligate intracellular bacterial family Chlamydiaceae comprises a number of different species that cause disease in various vertebrate hosts including humans. Chlamydia suis, primarily found in the gastrointestinal tract of pigs, is the only species of the Chlamydiaceae family to have naturally gained tetracycline resistance (TetR), through a genomic island (Tet-island), integrated into the middle of chromosomal invasin-like gene inv. Previous studies have hypothesised that the uptake of the Tet-island from a host outside the Chlamydiaceae family was a unique event, followed by spread among C.

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Background:  Chronic kidney disease (CKD) is a progressive, irreversible, and incurable condition characterized by high morbidity and mortality, affecting approximately one-tenth of the global population. Rise of urea-derived cyanate levels in CKD patients, severalfold higher in comparison to those found in healthy individuals, leads to an increased rate of carbamylation of lysine residues of proteins and peptides. This posttranslational modification plays an important role in the progression of kidney failure but also in the onset of CKD-related complications, including previously reported coagulopathies.

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Cell metabolism reprogramming to sustain energy production, while reducing oxygen and energy consuming processes is crucially important for the adaptation to hypoxia/ischemia. Adaptive metabolic rewiring is controlled by hypoxia-inducible factors (HIFs). Accumulating experimental evidence indicates that timely activation of HIF in brain-resident cells improves the outcome from acute ischemic stroke.

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Cardioselective β-blockade is generally well tolerated in practice and contraindications to this therapy are uncommon. β-blockers are a diverse therapeutic class, and their individual tolerability profiles are influenced strongly by their pharmacodynamic effects across different adrenergic receptors. Bisoprolol, probably the β-blocker with the highest selectivity for blockade of β- vs.

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Article Synopsis
  • * This study analyzed 263 samples from healthy livestock and abortion cases in Switzerland to understand strain diversity using genetic testing techniques, revealing novel genotypes and significant genetic diversity in bovine strains compared to lower diversity in sheep and pig strains.
  • * It found that all sheep and pig samples contained a specific plasmid, while only about 69.4% of bovine samples did; no plasmid was detected in the abortion cases, suggesting possible unique strain characteristics or detection issues.
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Introduction: Hemophagocytic lymphohistiocytosis (HLH) is a clinicopathologic syndrome produced by dysregulated activation of the immune system. Acute kidney injury (AKI) and proteinuria have been infrequently described in the setting of HLH, and investigations of underlying histopathologic changes in the kidney are limited.

Methods: To characterize kidney pathology in HLH, a retrospective review of 30 patients' clinical and laboratory data, and kidney tissue was performed (18 from autopsy, and 12 biopsied patients).

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Background: Despite several clinical trials, the use of corticosteroid therapy for treating immunoglobulin A nephropathy (IgAN) remains controversial. We aimed to describe the use of corticosteroid therapy combined with supportive therapy in Norwegian patients with IgAN who had progressed to end-stage kidney disease.

Methods: We conducted a retrospective cohort study using data from the Norwegian Renal Registry.

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Article Synopsis
  • Some patients with benign IgA nephropathy (IgAN) can unexpectedly progress, prompting researchers to study gene expression differences to predict outcomes.
  • They analyzed kidney biopsies from patients, identifying specific genes that could distinguish between progressors and non-progressors, achieving 88% accuracy in predictions made decades before clinical symptoms appeared.
  • The study also uncovered potential drug targets related to IgAN treatment, suggesting that glomerular mRNA sequencing at diagnosis could help identify patients at risk for disease progression.
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  • Anorexia Nervosa (AN) is a serious psychiatric disorder with a high mortality rate, categorized into restricting and binge/purging subtypes, but its causes are still largely unknown.
  • The study analyzed plasma samples from 78 females with AN and 70 healthy controls using advanced proteomics technology to identify new protein biomarkers related to the disorder.
  • Results highlighted a possible immune response, altered lipid metabolism, and suggested an autoimmune component, particularly in the restrictive subtype, laying the groundwork for future research on AN's underlying mechanisms.
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Chlamydia pecorum is a globally endemic livestock pathogen but prevalence data from Switzerland has so far been limited. The present longitudinal study aimed to get an insight into the C. pecorum prevalence in Swiss cattle and investigated infection dynamics.

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The obligate intracellular genus contains many pathogens with a negative impact on global health and economy. Despite recent progress, there is still a lack of genetic tools limiting our understanding of these complex bacteria. This study provides new insights into genetic manipulation of with the opportunistic porcine pathogen , the only chlamydial species naturally harboring an antibiotic resistance gene, originally obtained by horizontal gene transfer.

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Hypertensive nephrosclerosis (HN) and Type 2 diabetic nephropathy (T2DN) are the leading causes of chronic kidney disease (CKD). To explore shared pathogenetic mechanisms, we analyzed transcriptomes of kidney biopsies from patients with HN or T2DN. Total RNA was extracted from 10 μm whole kidney sections from patients with HN, T2DN, and normal controls (Ctrl) (n = 6 for each group) and processed for RNA sequencing.

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Background: Fabry disease (FD) is a rare lysosomal storage disorder caused by mutations in the GLA gene, resulting in reduced or lack of α-galactosidase A activity. This results in the accumulation of globotriaosylceramide (Gb3) and other glycosphingolipids in lysosomes causing cellular impairment and organ failures. While current therapies focus on reversing Gb3 accumulation, they do not address the altered cellular signaling in FD.

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Background: Diabetes mellitus (DM), either preexisting or developing after transplantation, remains a crucial clinical problem in kidney transplantation. To obtain insights into the molecular mechanisms underlying PTDM development and early glomerular damage before the development of histologically visible diabetic kidney disease, we comparatively analysed the proteome of histologically normal glomeruli from patients with PTDM and normoglycaemic (NG) transplant recipients. Moreover, to assess specificities inherent in PTDM, we also comparatively evaluated glomerular proteomes from transplant recipients with preexisting type 2 DM (T2DM).

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Neurological disorders such as stroke, multiple sclerosis, as well as the neurodegenerative diseases Parkinson's or Alzheimer's disease are accompanied or even powered by danger associated molecular patterns (DAMPs), defined as endogenous molecules released from stressed or damaged tissue. Besides protein-related DAMPs or "alarmins", numerous nucleic acid DAMPs exist in body fluids, such as cell-free nuclear and mitochondrial DNA as well as different species of extracellular RNA, collectively termed as self-extracellular nucleic acids (SENAs). Among these, microRNA, long non-coding RNAs, circular RNAs and extracellular ribosomal RNA constitute the majority of RNA-based DAMPs.

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Purpose: The obese black and tan, brachyuric (BTBR) ob/ob mouse spontaneously develops features comparable to human diabetic nephropathy. The primary aim of the present study was to investigate if a diet containing fish proteins would attenuate or delay the development of glomerular hypertrophy (glomerulomegaly), mesangial sclerosis and albuminuria in obese BTBR ob/ob mice.

Methods: Obese BTBR.

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Article Synopsis
  • - Fabry disease is a rare genetic disorder linked to the alpha-galactosidase gene, and while it can be managed with enzyme replacement therapy (ERT), understanding FN's molecular roots is essential for identifying biomarkers and drug targets.
  • - The study involved RNA sequencing of biopsies from two cohorts of Fabry nephropathy patients and control individuals, revealing significant differences in gene expression associated with the disease and its response to ERT over time.
  • - Despite some positive responses to early ERT—especially in gene expression patterns—many biological pathways, particularly in glomeruli and arteries, remained altered, leading to the identification of 69 potential drug repurposing candidates as adjunct treatments.
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Human neutrophil elastase (HNE) plays a pivotal role in innate immunity, inflammation, and tissue remodeling. Aberrant proteolytic activity of HNE contributes to organ destruction in various chronic inflammatory diseases including emphysema, asthma, and cystic fibrosis. Therefore, elastase inhibitors could alleviate the progression of these disorders.

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Background: Patients with chronic kidney disease (CKD) face numerous challenges regarding their nutritional status, including undernutrition, wasting, overweight, and obesity. However, there is a gap in the knowledge on the importance of nutritional status on the survival of CKD in patients along the spectrum of progression of CKD.

Objectives: This study aimed to investigate the association of several nutritional measures with all-cause mortality.

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Introduction: Renal functional response (RFR) is the acute increase in glomerular filtration rate (GFR) after a protein load. Low RFR is a marker of single nephron hyperfiltration. Low birth weight (LBW) is associated with reduced number of nephrons, lower kidney function, and smaller kidneys in adults.

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