scholarly journals Acute kidney injury in COVID-19; a review on current knowledge

2020 ◽  
Vol 9 (4) ◽  
pp. e31-e31 ◽  
Author(s):  
Elahe Aleebrahim-Dehkordi ◽  
Ali Reyhanian ◽  
Shirin Saberianpour ◽  
Ali Hasanpour-Dehkordi
Keyword(s):  
Genomic Sequence ◽  
Current Knowledge ◽  
Kidney Injury ◽  
Large Family ◽  
Lung Damage ◽  
Low Oxygen ◽  
Respiratory Involvement ◽  
Coronavirus Infection ◽  
The Common ◽  
Review Study

Coronaviruses are a large family of viruses that can cause a variety of diseases in humans. Some coronaviruses cause only mild illnesses like the common cold. While, some coronaviruses such as SARS-CoV (SARS-associated coronavirus) and Middle East respiratory syndrome coronavirus (MERS-CoV) have, in recent years, been able to cause severe respiratory involvement (pneumonia), leading to death in several patients. By identifying the genomic sequence of the new human coronavirus SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) it has been revealed that it belongs to the beta coronavirus genus. COVID-19 appears to be transmitted by a mechanism similar to the influenza virus via person to person, sneezing coughing, or contact with the secretions of infected patients. Early symptoms of these respiratory viruses include fever, cough, and shortness of breath, with an incubation period of 2-14 days. SARS-CoV-2 is an acute respiratory disease that initially causes lung damage. SARS-CoV-2 can affect other organs, including the kidneys. Kidney damage may be caused by alterations that occur during coronavirus infection. It seems that low-oxygen delivery to tissues like the kidney in the setting of this disease may lead to ischemic damage of the kidney. Considering the importance of the kidneys, as one, this review study aimed to investigate the effect of the new coronavirus on the kidneys and its role in the development of renal failure.

Features of the course of new coronaviral infection (COVID-19) in patients with acute kidney injury and end stage renal failure

2021 ◽  
Vol 25 (6) ◽  
pp. 71-75
Author(s):  
N. V. Agranovich ◽  
L. I. Tkachenko ◽  
S. A. Knyshova ◽  
M. V. Titorenko ◽  
A. P. Lichacheva
Keyword(s):  
Acute Kidney Injury ◽  
Clinical Laboratory ◽  
Kidney Injury ◽  
Kidney Damage ◽  
Lung Damage ◽  
Newly Diagnosed ◽  
Negative Effects ◽  
Arterial Blood ◽  
Coronavirus Infection ◽  
Group 2

BACKGROUND. In the modern era, COVID-19 is the biggest problem facing doctors and scientists around the world. SARSCоV-2 is a multisystem infection that is not limited to lung damage and has the immuno-mediated effect of negative effects on organs and systems, including the kidneys. To date, there is no precise understanding of the pathogenesis of nephrological disorders in patients with COVID-19. Patients with chronic kidney disease (CKD) are a group of particularly high risk of CO-VID-19 infection and high mortality in the development of the disease.THE AIM: to evaluate the features of the course of a new coronavirus infection (COVID 19) in patients with acute kidney injury and terminal renal insufficiency.PATIENTS AND METHODS. The study of clinical, laboratory and instrumental parameters was carried out in 119 patients (67 men and 52 women) diagnosed with COVID-19. The average age of the patients was 63.1±1.7 years. All patients were divided into two groups: group 1 - patients with CKD and HD, group 2 - patients with newly diagnosed kidney damage against the background of coronavirus infection (COVID-19). Statistical data analysis was carried out using the software package "IBM SPSS Statistics 21.0" (USA) (Russified version).RESULTS. As a result of the study, it was found that in the clinical picture of COVID-19 patients suffering from CKD and undergoing hemodialysis, such a symptom as myalgia was noted 2 times more often, the percentage of saturation of arterial blood hemoglobin with oxygen (SaO2,%) was significantly lower compared to patients with newly diagnosed kidney damage on the background of infection. The duration of the temperature reaction during the disease was 5 times longer than in patients without CKD. Although the incidence of lung damage in patients of both groups was identical, mortality was significantly higher in the group of patients with CKD.CONCLUSION. In the patients examined by us, proteinuria, an increase in the level of nitrogenous metabolites, as well as D-dimers in both groups, are associated with increased mortality. Mortality in patients with CKD and HD was several times higher than in those without pathology of the urinary system. The severity of the patients' condition was primarily due to the symptoms of damage to the respiratory system, but the degree of renal dysfunction is undoubtedly an important prognostic value. Thus, monitoring the state of individual nephron structures in patients with CO-VID-19 is of great importance, and emergency nephroprotective measures may be crucial in the fight against cytokine storm.

scholarly journals Current Knowledge of Endolysosomal and Autophagy Defects in Hereditary Spastic Paraplegia

Cells ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1678
Author(s):  
Liriopé Toupenet Marchesi ◽  
Marion Leblanc ◽  
Giovanni Stevanin
Keyword(s):  
Nervous System ◽  
Motor Neurons ◽  
Neurological Disorders ◽  
Hereditary Spastic Paraplegia ◽  
Current Knowledge ◽  
Spastic Paraplegia ◽  
Functional Convergence ◽  
The Common ◽  
Hsp Genes

Hereditary spastic paraplegia (HSP) refers to a group of neurological disorders involving the degeneration of motor neurons. Due to their clinical and genetic heterogeneity, finding common effective therapeutics is difficult. Therefore, a better understanding of the common pathological mechanisms is necessary. The role of several HSP genes/proteins is linked to the endolysosomal and autophagic pathways, suggesting a functional convergence. Furthermore, impairment of these pathways is particularly interesting since it has been linked to other neurodegenerative diseases, which would suggest that the nervous system is particularly sensitive to the disruption of the endolysosomal and autophagic systems. In this review, we will summarize the involvement of HSP proteins in the endolysosomal and autophagic pathways in order to clarify their functioning and decipher some of the pathological mechanisms leading to HSP.

scholarly journals Protective Role of Nrf2 in Renal Disease

Antioxidants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 39
Author(s):  
Melania Guerrero-Hue ◽  
Sandra Rayego-Mateos ◽  
Cristina Vázquez-Carballo ◽  
Alejandra Palomino-Antolín ◽  
Cristina García-Caballero ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Current Knowledge ◽  
Unmet Need ◽  
Kidney Injury ◽  
Protective Role ◽  
Renal Diseases ◽  
Related Factor ◽  
Ckd Progression ◽  
Protective Mechanisms ◽  
Novel Therapeutic Strategies

Chronic kidney disease (CKD) is one of the fastest-growing causes of death and is predicted to become by 2040 the fifth global cause of death. CKD is characterized by increased oxidative stress and chronic inflammation. However, therapies to slow or prevent CKD progression remain an unmet need. Nrf2 (nuclear factor erythroid 2-related factor 2) is a transcription factor that plays a key role in protection against oxidative stress and regulation of the inflammatory response. Consequently, the use of compounds targeting Nrf2 has generated growing interest for nephrologists. Pre-clinical and clinical studies have demonstrated that Nrf2-inducing strategies prevent CKD progression and protect from acute kidney injury (AKI). In this article, we review current knowledge on the protective mechanisms mediated by Nrf2 against kidney injury, novel therapeutic strategies to induce Nrf2 activation, and the status of ongoing clinical trials targeting Nrf2 in renal diseases.

scholarly journals Complement Components C3 and C4 Indicate Vasculitis Manifestations to Distinct Renal Compartments in ANCA-Associated Glomerulonephritis

2021 ◽  
Vol 22 (12) ◽  
pp. 6588
Author(s):  
Samy Hakroush ◽  
Désirée Tampe ◽  
Peter Korsten ◽  
Philipp Ströbel ◽  
Björn Tampe
Keyword(s):  
Current Knowledge ◽  
Systemic Disease ◽  
Kidney Injury ◽  
Scoring Systems ◽  
Antineutrophil Cytoplasmic Antibodies ◽  
Glomerular Injury ◽  
Tubulointerstitial Injury ◽  
Complement Components ◽  
Tubulointerstitial Lesions ◽  
Low Levels

Background: Acute kidney injury (AKI) is a common and severe complication of antineutrophil cytoplasmic antibodies (ANCA)-associated vasculitis (AAV) causing progressive chronic kidney disease (CKD), end-stage renal disease (ESRD) or death. Pathogenic ANCAs, in particular proteinase 3 (PR3) and myeloperoxidase (MPO), trigger a deleterious immune response resulting in pauci-immune necrotizing and crescentic glomerulonephritis (GN), a common manifestation of glomerular injury in AAV. However, there is growing evidence that activation of the complement pathway contributes to the pathogenesis and progression of AAV. We here aimed to compare glomerular and tubulointerstitial lesions in ANCA GN and extrarenal manifestation of AAV in association with levels of circulating complement components C3c and C4. Methods: Plasma levels of C3c and C4 in a total number of 53 kidney biopsies with ANCA GN were retrospectively included between 2015 and 2020. Glomerular and tubulointerstitial lesions were evaluated according to established scoring systems for ANCA GN and analogous to the Banff classification. Results: We here show that circulating levels of C3c and C4 in ANCA GN were comparable to the majority of other renal pathologies. Furthermore, hypocomplementemia was only detectable in a minor subset of ANCA GN and not correlated with renal or extrarenal AAV manifestations. However, low levels of circulating C3c correlated with AKI severity in ANCA GN independent of systemic disease activity or extrarenal AAV manifestation. By systematic scoring of glomerular and tubulointerstitial lesions, we provide evidence that low levels of circulating C3c and C4 correlated with vasculitis manifestations to distinct renal compartments in ANCA GN. Conclusions: We here expand our current knowledge about distinct complement components in association with vasculitis manifestations to different renal compartments in ANCA GN. While low levels of C4 correlated with glomerulitis, our observation that low levels of circulating complement component C3c is associated with interstitial vasculitis manifestation reflected by intimal arteritis implicates that C3c contributes to tubulointerstitial injury in ANCA GN.

Metastatische pulmonale calcificaties als zeldzame oorzaak van matglasopaciteiten op een CT-scan

2021 ◽  
Author(s):  
I. CARPENTIER ◽  
E. PEETERS ◽  
B. VANZIELEGHEM
Keyword(s):  
Correct Diagnosis ◽  
Kidney Injury ◽  
Lung Damage ◽  
Ground Glass ◽  
Literature Overview ◽  
Chronic Kidney Injury ◽  
Patient’S History ◽  
Pulmonary Calcifications ◽  
Metastatic Pulmonary Calcification

Metastatic pulmonary calcification: a case report and literature overview Ground-glass opacities have a broad differential diagnosis, including infectious, metabolic, inflammatory and malignant causes. This case presents an underdiagnosed entity of dense ground-glass opacities, namely metastatic pulmonary calcifications (MPC). This is a benign metabolic disease characterised by the deposition of calcium in the lungs, mostly described in patients with chronic kidney injury and secondary hyperparathyroidism. The majority of the patients require no treatment, but in some cases it may lead to irreversible lung damage. Clinical and radiological features, as well as the patient’s history, are crucial to make a correct diagnosis since MPC has a relatively specific appearance on imaging. This case study discusses the medical history and imaging appearance of a 44-year-old woman with MPC, followed by a literature overview.

‘Nucleated red blood cells’ as hypoxia marker in clinical analysis of blood in patients with coronavirus infection

2021 ◽  
pp. 23-24
Author(s):  
O. Yu. Dorn ◽  
F. M. Orifova ◽  
E. G. Stepanova
Keyword(s):  
Clinical Practice ◽  
Blood Cells ◽  
Blood Test ◽  
Clinical Analysis ◽  
Lung Damage ◽  
Hypoxic Stress ◽  
Urgent Problem ◽  
Nucleated Red Blood Cells ◽  
Hypoxia Marker ◽  
Coronavirus Infection

Assessment of the condition of a patient with coronavirus infection is an urgent problem in clinical practice. The parameter ’nucleated erythrocytes’ in a clinical blood test can be used in clinical practice as a marker of hypoxia in case of lung damage, since it objectively reflects the consequences of acute hypoxic stress in the patient’s body.

scholarly journals Machine Learning for Mortality Prediction in Pediatric Myocarditis

2021 ◽  
Vol 9 ◽  
Author(s):  
Fu-Sheng Chou ◽  
Laxmi V. Ghimire
Keyword(s):  
Machine Learning ◽  
Linear Regression ◽  
Regression Model ◽  
Current Knowledge ◽  
External Validation ◽  
Model Development ◽  
Kidney Injury ◽  
High Specificity ◽  
Mortality Prediction ◽  
Linear Regression Models

Background: Pediatric myocarditis is a rare disease. The etiologies are multiple. Mortality associated with the disease is 5–8%. Prognostic factors were identified with the use of national hospitalization databases. Applying these identified risk factors for mortality prediction has not been reported.Methods: We used the Kids' Inpatient Database for this project. We manually curated fourteen variables as predictors of mortality based on the current knowledge of the disease, and compared performance of mortality prediction between linear regression models and a machine learning (ML) model. For ML, the random forest algorithm was chosen because of the categorical nature of the variables. Based on variable importance scores, a reduced model was also developed for comparison.Results: We identified 4,144 patients from the database for randomization into the primary (for model development) and testing (for external validation) datasets. We found that the conventional logistic regression model had low sensitivity (~50%) despite high specificity (>95%) or overall accuracy. On the other hand, the ML model struck a good balance between sensitivity (89.9%) and specificity (85.8%). The reduced ML model with top five variables (mechanical ventilation, cardiac arrest, ECMO, acute kidney injury, ventricular fibrillation) were sufficient to approximate the prediction performance of the full model.Conclusions: The ML algorithm performs superiorly when compared to the linear regression model for mortality prediction in pediatric myocarditis in this retrospective dataset. Prospective studies are warranted to further validate the applicability of our model in clinical settings.

The underground life of homeodomain-leucine zipper transcription factors

2021 ◽  
Author(s):  
Perotti M F ◽  
Arce A L ◽  
R L Chan
Keyword(s):  
Transcription Factors ◽  
Root Development ◽  
Leucine Zipper ◽  
Current Knowledge ◽  
Expression Patterns ◽  
Large Family ◽  
Cell Types ◽  
Structural Features ◽  
Specific Cell ◽  
High Plasticity

Abstract Roots are the anchorage organs of plants, responsible for water and nutrient uptake, exhibiting high plasticity. Root architecture is driven by the interactions of biomolecules, including transcription factors (TFs) and hormones that are crucial players regulating root plasticity. Multiple TF families are involved in root development; some, such as ARFs and LBDs, have been well characterized, whereas others remain less investigated. In this review, we synthesize the current knowledge about the involvement of the large family of homeodomain-leucine zipper (HD-Zip) TFs in root development. This family is divided into four subfamilies (I to IV), mainly according to structural features, such as additional motifs aside from HD-Zip, as well as their size, gene structure, and expression patterns. We explored and analyzed public databases and the scientific literature regarding HD-Zip TFs in Arabidopsis and other species. Most members of the four HD-Zip subfamilies are expressed in specific cell types and several ones from each group have assigned functions in root development. Notably, a high proportion of the studied proteins are part of intricate regulation pathways involved in primary and lateral root growth and development.

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