scholarly journals Evidence For and Against Direct Kidney Infection by SARS-CoV-2 in Patients with COVID-19

2021 ◽  
pp. CJN.04560421
Author(s):  
Luise Hassler ◽  
Fabiola Reyes ◽  
Matthew Sparks ◽  
Paul Welling ◽  
Daniel Batlle
Keyword(s):  
Kidney Disease ◽  
Kidney Injury ◽  
Rt Pcr ◽  
Non Invasive ◽  
Collapsing Glomerulopathy ◽  
Number Of Patients ◽  
Immuno Histochemistry ◽  
Polymerase Chain ◽  
Organ Tropism

Despite evidence of multi-organ tropism of SARS-CoV-2 in patients with COVID-19, direct viral kidney invasion has been difficult to demonstrate. The question of whether SARS-CoV-2 can directly infect the kidney is relevant to the understanding of pathogenesis of acute kidney injury and collapsing glomerulopathy in COVID-19. Methodologies to document SARS-CoV-2 infection that have been used include immunohistochemistry, immunofluorescence, reverse transcriptase polymerase chain reaction (RT-PCR), in situ hybridization and electron microscopy. In our review of studies to date we found that SARS-CoV-2 in the kidney of patients with COVID-19 was detected in 18 of 94 (19%) by immuno-histochemistry, 71 of 144 (49%) by RT-PCR and 11 of 84 (13%) by in situ hybridization. In a smaller number of patients with COVID-19 examined by immunofluorescence, SARS-CoV-2 was detected in 10 of 13 (77%). In total, in kidneys from 102 of 235 patients (43.4%), the presence of SARS-CoV-2 was suggested by at least one of the methods used. Despite these positive findings, caution is needed as many other studies have been negative for SARS-CoV-2 presence and it should be noted that when detected it was only in kidneys obtained at autopsy. There is a clear need for studies from kidney biopsies, including those performed at early stages of the COVID-19 associated kidney disease. Development of tests to detect kidney viral infection in urine samples would be more practical as a non-invasive way to evaluate SARS CoV-2 infection during the evolution of COVID-19-associated kidney disease.

scholarly journals CT findings of 795 COVID-19 positive cases: a multicenter study in Egypt

2020 ◽  
Vol 51 (1) ◽  
Author(s):  
Youssriah Yahia Sabri ◽  
Mohamed Mohsen Tolba Fawzi ◽  
Eman Zaki Nossair ◽  
Safaa Mohamed El-Mandooh ◽  
Amira Aly Hegazy ◽  
...  
Keyword(s):  
Virus Disease ◽  
Chest Ct ◽  
Imaging Features ◽  
Rt Pcr ◽  
Relevant Research ◽  
Non Invasive ◽  
Ct Findings ◽  
Global Pandemic ◽  
Polymerase Chain ◽  
Ct Studies

Abstract Background Corona Virus Disease 2019 (COVID-19) outbreak was officially announced as a global pandemic by the WHO on March 11th 2020. Thorough understanding of CT imaging features of COVID-19 is essential for effective patient management; rationalizing the need for relevant research. The aim of this study was to analyze the chest CT findings of patients with real-time polymerase chain reaction (RT-PCR) proved COVID-19 admitted to four Egyptian hospitals. The recently published RSNA expert consensus statement on reporting COVID-19 chest CT findings was taken into consideration. Results Normal CT “negative for COVID-19” was reported in 26.1% of our RT-PCR proved COVID-19 cases. In descending order of prevalence, imaging findings of the positive CT studies (73.9%) included GGO (69%), consolidation (49.7%), crazy paving (15.4%), and peri-lobular fibrosis (40.6%). These showed a dominantly bilateral (68.2%), peripheral (72.4%), and patchy (64.7%) distribution. Remarkably, thymic hyperplasia was identified in 14.3% of studies. According to the RSNA consensus, CT findings were classified as typical in 68.9%, indeterminate in 3.6%, and atypical in 1.4% of the evaluated CT studies. Conclusion Although COVID-19 cannot be entirely excluded by chest CT, it can be distinguished in more than two-thirds of cases; making CT a widely available, non-invasive, and rapid diagnostic tool.

A new sex dimorphism in the Harderian gland of the frog Rana esculenta

2007 ◽  
Vol 85 (8) ◽  
pp. 909-915 ◽  
Author(s):  
Ismene Serino ◽  
Gaia Izzo ◽  
Diana Ferrara ◽  
Michela d’Istria ◽  
Sergio Minucci
Keyword(s):  
Sexual Dimorphism ◽  
Secretory Activity ◽  
Harderian Gland ◽  
Polymerase Chain Reaction Analysis ◽  
Rana Esculenta ◽  
Rt Pcr ◽  
Polymerase Chain ◽  
Two Peaks ◽  
Constant Expression

The Harderian gland (Hg), the only gland found in the orbit of the frog Rana esculenta L., 1758, probably plays a role in orbital lubrication. The secretory activity of the Hg is seasonal, showing the highest activity in summer. There is little information on Hg gene expression; previously, we identified a mRNA named harderin, whose deduced protein has no homology with other proteins. Differential expression of the harderin transcript between the sexes expressed during the annual cycle implies sexual dimorphism. RT–PCR (reverse transcription – polymerase chain reaction) analysis, revealed that harderin is expressed during the entire year in the Hg of both sexes. It shows a higher level of expression in the female glands than that of male glands. Two peaks of expression, in February and in June, were observed in the female glands, while only the February peak was observed in those of males. These observations were supported by in situ hybridization. Experiments involving gonadectomy and (or) hormonal replacement therapy showed a significant decrease in harderin in the Hg of females; this effect is prevented by estradiol (testosterone had no effect), while ICI (antiestrogen) counteracts the hormonal prevention, suggesting that this sexual dimorphism is under estradiol control. The constant expression of harderin mRNA during the year suggests a probable constitutive role for this molecule.

scholarly journals Outcome of acute kidney injuries following chronic kidney disease: A systematic review in Nawaz Sharif kidney hospital Swat

2022 ◽  
Vol 7 (1) ◽  
pp. 11-17
Author(s):  
Rahmat Ali Khan ◽  
Syed Munib ◽  
Mohammad Shahzad ◽  
Mufti Baleegh ◽  
Liaqat Ali ◽  
...  
Keyword(s):  
Systematic Review ◽  
Chronic Kidney Disease ◽  
Acute Kidney Injury ◽  
Kidney Disease ◽  
Age Distribution ◽  
Kidney Injury ◽  
Acute Glomerulonephritis ◽  
Duration Of Symptoms ◽  
Number Of Patients ◽  
Acute Mi

  Background: Acute kidney injury may increase the risk for CKD and end-stage renal disease. In an attempt to summarize the literature and provide more compelling evidence, we conducted a systematic review comparing the  risk for CKD (chronic kidney disease), AKI (Acute kidney injury), Acute gastroententeritis, postnatal   AKI, Acute MI (myocardial infarction), AKI  2ndry to chemotherapy, AKI  2ndry to abstractive Nephropathy, AKI 2ndry to sepsis, AKI 2ndry to Drugs (NSAIDS and ARBS), AKI 2ndry to AGN (acute Glomerulonephritis), AKI 2ndry to Rhabdomyolysis, and lest AKI 2ndry to Malaria, death in patients with AKI,HD, CKD (chronic kidney disease). There have been several important developments in the literature recently regarding the association between acute kidney injury (AKI) and chronic kidney disease (CKD). First, when the National Kidney Foundation promulgated their highly influential Kidney Disease Outcomes Quality Initiative CKD guidelines in 2002, six chapters were devoted to the complications associated with decreased glomerular filtration rate (GFR) including hypertension, anemia, nutritional status, bone disease/disorders of calcium, and phosphorus metabolism, neuropathy Objective: To study the outcomecute kidney injury following chronic kidney disease; systematic review.  Methods: This was a prospective observational study from January 2018 to December 2020. Patients visiting department of Nephrology Nawaz Sharif Kidney center Swat, number of patients included study 351. All ages and both sexes were considered. Patients treated elsewhere or who has undergone in this study. Complete medical history, detailed examination like age, sex, diagnosis, and outcome, of AKI, examination under microscope and investigations, and necessary blood investigations were carried out. Results: Three fifty one (351) patients were included in this study. The age distribution showed (75%) patients between 40-95 years and 25(25%) between 32-39 years. Mean age was 43 years with Standard Deviation of ± 35.66. Among 351 patients 162 (45%) patients were male and 189 (55%) patients were female. Duration of symptoms in 24(17%) was <4 months and 112(75%) had >4 months, with mean of 4 months and SD ± 2.315. Total 351 participants AKI 45(12%) postnatal AKI 33(9%) Acute MI 18(6%) AKI 2ndry chemotherapy 15(5.72%) AKI 2ndry to abstractive Nephropathy 55 (14%) AKI 2ndry to sepsis 63 (17%) AKI 2ndry to Drugs (NSAIDS and ARBS)   54 (14%) CKD (chronic kidney disease) 48 (15%) AKI 2ndry to Rhabdomylysis 18(6%) Conclusions: The study concludes that the acute kidney injury following CKD systematic reviewing among patients presenting with AKI,CHD ,AKI sepsis, ,AKI Drugs(NSIAD)  in local hospital  settings This can be reduced with proper health education in general public regarding prevention of the disease and hence its complications.  

scholarly journals Covid-19 Re-infection vs Prolonged Viral Shedding

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Richard J. Barohn ◽  
Mary Hindle ◽  
Lauren Peck ◽  
Syed Hasan Raza Naqvi
Keyword(s):  
Polymerase Chain Reaction ◽  
Acquired Immunity ◽  
Rt Pcr ◽  
Chain Reaction ◽  
Initial Infection ◽  
Viral Shedding ◽  
Number Of Patients ◽  
The World ◽  
Polymerase Chain ◽  
Spread Of Infection

  Since December 2019, COVID 19 pandemic has devastated communities across the world. As number of patients recovered from COVID 19 continue to rise, question of acquired immunity versus chances of re-infection becomes critical to understand the future spread of infection. Here, we present a case of a patient previously recovered from COVID-19, develops new symptoms concerning for possible re-infection with positive reverse transcriptase-polymerase chain reaction (RT-PCR) after few months of initial infection.  

The bovine sex-determining region Y (Sry) gene and its mRNA transcript are present in Y sperm but not X sperm of bulls

2018 ◽  
Vol 68 (3) ◽  
pp. 321-332 ◽  
Author(s):  
Chun-Mei Han ◽  
Rong Chen ◽  
Tao Li ◽  
Xiao-Li Chen ◽  
Yong-Fu Zheng ◽  
...  
Keyword(s):  
Cellular Localization ◽  
Fish Analysis ◽  
Mrna Transcript ◽  
Rt Pcr ◽  
Sry Gene ◽  
Chain Reaction ◽  
Dna And Rna ◽  
Positive Rate ◽  
Polymerase Chain

AbstractThe aims of this study were to establish whether the sex-determining region Y gene and its mRNA transcript are present in the Y sperm and X sperm of bulls and, if present, determine their cellular localization. Semen was collected from three bulls and sorted by flow cytometry into X- and Y-chromosome populations. Reverse transcription-polymerase chain reaction (RT-PCR) was used to determineSrymRNA expression in X sperm and Y sperm. The presence and localization ofSryDNA and RNA were investigated by fluorescence in situ hybridization (FISH). RT-PCR detected a singleSrytranscript of 142 bp in Y sperm but not in X sperm. In Y sperm, the FISH-positive rates forSryDNA andSryRNA did not differ significantly from the re-analyzed Y sperm purity. In further experiments, there were no significant differences between the FISH-positive rate forSryRNA and the re-analyzed Y sperm purity for X-sorted, Y-sorted, or unsorted sperm. In conclusion, FISH analysis revealed thatSrytranscripts are present at the edges of the sperm heads of Y sperm but are absent from X sperm.

scholarly journals Indirect effects of severe acute respiratory syndrome coronavirus 2 on the kidney in coronavirus disease patients

2020 ◽  
Vol 13 (3) ◽  
pp. 347-353 ◽  
Author(s):  
Aymeric Couturier ◽  
Sophie Ferlicot ◽  
Kévin Chevalier ◽  
Matthieu Guillet ◽  
Marie Essig ◽  
...  
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Kidney Tissue ◽  
Kidney Injury ◽  
Renal Tubular Cells ◽  
Collapsing Glomerulopathy ◽  
Tubulointerstitial Lesions ◽  
Polymerase Chain ◽  
Renal Tubular ◽  
Novel Coronavirus ◽  
Kidney Lesions

Abstract Among patients hospitalized for novel coronavirus disease (COVID-19), between 10 and 14% develop an acute kidney injury and around half display marked proteinuria and haematuria. Post-mortem analyses of COVID-19 kidney tissue suggest that renal tubular cells and podocytes are affected. Here we report two cases of collapsing glomerulopathy and tubulointerstitial lesions in living COVID-19 patients. Despite our use of sensitive reverse transcription polymerase chain reaction techniques in this study, we failed to detect the virus in blood, urine and kidney tissues. Our observations suggest that these kidney lesions are probably not due to direct infection of the kidney by severe acute respiratory syndrome coronavirus 2.

scholarly journals Acute Kidney Disease and Mortality in Acute Kidney Injury Patients with COVID-19

2021 ◽  
Vol 10 (19) ◽  
pp. 4599
Author(s):  
Filipe Marques ◽  
Joana Gameiro ◽  
João Oliveira ◽  
José Agapito Fonseca ◽  
Inês Duarte ◽  
...  
Keyword(s):  
Risk Factors ◽  
Kidney Disease ◽  
Hospital Mortality ◽  
Significant Risk ◽  
Kidney Injury ◽  
Risk Of Mortality ◽  
Number Of Patients ◽  
Acute Kidney Disease ◽  
Risk Patients ◽  
Stage 1

Background: The incidence of AKI in coronavirus disease 2019 (COVID-19) patients is variable and has been associated with worse prognosis. A significant number of patients develop persistent kidney damage defined as Acute Kidney Disease (AKD). There is a lack of evidence on the real impact of AKD on COVID-19 patients. We aim to identify risk factors for the development of AKD and its impact on mortality in COVID-19 patients. Methods: Retrospective analysis of COVID-19 patients with AKI admitted at the Centro Hospitalar Universitário Lisboa Norte between March and August of 2020. The Kidney Disease Improving Global Outcomes (KDIGO) classification was used to define AKI. AKD was defined by presenting at least KDIGO Stage 1 criteria for >7 days after an AKI initiating event. Results: In 339 COVID-19 patients with AKI, 25.7% patients developed AKD (n = 87). The mean age was 71.7 ± 17.0 years, baseline SCr was 1.03 ± 0.44 mg/dL, and the majority of patients were classified as KDIGO stage 3 AKI (54.3%). The in-hospital mortality was 18.0% (n = 61). Presence of hypertension (p = 0.006), CKD (p < 0.001), lower hemoglobin (p = 0.034) and lower CRP (p = 0.004) at the hospital admission and nephrotoxin exposure (p < 0.001) were independent risk factors for the development of AKD. Older age (p = 0.003), higher serum ferritin at admission (p = 0.008) and development of AKD (p = 0.029) were independent predictors of in-hospital mortality in COVID-19-AKI patients. Conclusions: AKD was significantly associated with in-hospital mortality in this population of COVID-19-AKI patients. Considering the significant risk of mortality in AKI patients, it is of paramount importance to identify the subset of higher risk patients.

scholarly journals MO134COVID-19-ASSOCIATED KIDNEY INJURY IS CHARACTERIZED BY ACUTE TUBULAR NECROSIS AND CAPILLARY CONGESTION WITH EVIDENCE FOR SARS-COV-2 IN THE NEPHRON

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Antoine Bouquegneau ◽  
Pauline Erpicum ◽  
Stéphanie Grosch ◽  
Lionel Habran ◽  
Olivier Hougrand ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Acute Kidney Injury ◽  
In Situ Hybridization ◽  
Acute Tubular Necrosis ◽  
Kidney Injury ◽  
Post Mortem ◽  
Rt Pcr ◽  
N Protein ◽  
Tubular Necrosis

Abstract Background and Aims Kidney damage has been reported in COVID-19 patients. Despite numerous reports about COVID-19-associated nephropathy, the factual presence of the SARS-CoV-2 in the renal parenchyma remains controversial. Method We consecutively performed 16 immediate (≤3h) post-mortem renal biopsies in patients diagnosed with COVID-19. Kidney samples from 5 patients who died from sepsis and were free from COVID-19 were used as controls. Samples were methodically evaluated by 3 pathologists. Virus detection in the renal parenchyma was performed in all samples by bulk RNA RT-PCR (E and N1/N2 genes), immunostaining (nCoV2019 N-Protein), fluorescent in situ hybridization (nCoV2019-S) and electron microscopy. Results The mean age of our COVID-19 cohort was 68.2±12.8 years, most of whom were males (68.7%). Proteinuria was observed in 53.3% of cases, while acute kidney injury occurred in 60% of cases. Acute tubular necrosis of variable severity was found in all cases, with no tubular or interstitial inflammation. There was no difference in acute tubular necrosis severity between the patients with COVID-19 versus control samples. Congestion in glomerular and peri-tubular capillaries was respectively observed in 56.3 and 87.5% of patients with COVID-19 compared to 20% of controls, with no evidence of thrombi. The nCoV2019 N-Protein was detected in proximal tubules and also at the basolateral pole of scattered cells of the distal tubules in 9/16 cases. In situ hybridization confirmed these findings. RT-PCR of kidney total RNA detected SARS-CoV-2 N gene in one case. Electron microscopy did not show typical viral inclusions. Conclusion Our immediate post-mortem kidney samples from patients with COVID-19 highlight a congestive pattern of acute kidney injury, with no significant glomerular or interstitial inflammation. Immunostaining and in situ hybridization suggest that SARS-CoV-2 is present in various segments of the nephron.

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