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  1. Article ; Online: May macroglossia in COVID-19 be related not only to angioedema?

    Daniele Colombo / Franca Del Nonno / Roberta Nardacci / Laura Falasca

    Journal of Infection and Public Health, Vol 15, Iss 1, Pp 112-

    2022  Volume 115

    Abstract: SARS-CoV-2 infection can lead to a variety of clinical manifestations. The occurrence of tongue swelling has recently reported in severe cases of COVID-19, and angioedema has suggested as the causative mechanism. Several factors, such as genetic ... ...

    Abstract SARS-CoV-2 infection can lead to a variety of clinical manifestations. The occurrence of tongue swelling has recently reported in severe cases of COVID-19, and angioedema has suggested as the causative mechanism. Several factors, such as genetic predisposing factor and angiotensin-converting enzyme inhibitors (ACEI) therapies, have proposed to induce angioedema, especially as concerns patients requiring ICU treatments. Nevertheless, the question is still debated and other causes not yet recognized should be considered.Here we present a case of macroglossia occurred in a patient deceased for COVID-19 disease, who had no family history of angioedema and did not receive ACEI as antihypertensive drug. Histological and immune-histochemical analysis revealed tongue muscle atrophy with infiltrating macrophages suggesting repair mechanisms, as seen in nerve injury recovery. These new pathological findings may open new fields of study on the pathogenesis of SARS-CoV-2.
    Keywords Macroglossia ; COVID-19 ; SARS-CoV-2 ; Angioedema ; Muscle atrophy ; Histopathology ; Infectious and parasitic diseases ; RC109-216 ; Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Prevalence and variability of use of home mechanical ventilators, positive airway pressure and oxygen devices in the Lombardy region, Italy

    Michele Vitacca / Luca Barbano / Daniele Colombo / Olivia Leoni / Enrico Guffanti

    Monaldi Archives for Chest Disease, Vol 88, Iss

    2018  Volume 1

    Abstract: Few studies have analyzed the prevalence and accessibility of home mechanical ventilation (HMV) in Italy. We aimed to investigate the prevalence and prescription variability of HMV as well as of long-term oxygen therapy (LTOT) and continuous positive ... ...

    Abstract Few studies have analyzed the prevalence and accessibility of home mechanical ventilation (HMV) in Italy. We aimed to investigate the prevalence and prescription variability of HMV as well as of long-term oxygen therapy (LTOT) and continuous positive airway pressure (CPAP), in the Lombardy Region. Prescribing rates of HMV (both noninvasive and tracheostomies), CPAP (auto-CPAP, CPAP/other sleep machines) and LTOT (liquid-O2, O2-gas, concentrators) in the 15 Local Healthcare districts of Lombardy were gathered from billing data for 2012 and compared. Crude rates (per 100,000 population) and rates for the different healthcare districts were calculated. In 2012, 6325 patients were on HMV (crude prescription rate: 63/100,000) with a high variation across districts (8/100,000 in Milano 1 vs 150/100,000 in Pavia). There were 14,237 patients on CPAP (crude prescription rate: 142/100,000; CPAP/other sleep machines 95.3% vs auto-CPAP 4.7%) with also high intra-regional variation (56/100,000 in Mantova vs. 260/100,000 in Pavia). There were 21,826 patients on LTOT (prescription rate: 217/100,000 rate; liquid-O2 94%, O2-gas 2.08%, O2-concentrators 3.8%), with again high intra-regional variation (100/100,000 in Bergamo vs 410/100,000 in Valle Camonica). The crude rate of HMV prescriptions in Lombardy is very high, with a high intra-regional variability in prescribing HMV, LTOT and CPAP which is partly explainable by the accessibility to specialist centers with HMV/sleep-study facilities. Analysis of administrative data and variability mapping can help identify areas of reduced access for an improved standardization of services. An audit among Health Payer and prescribers to interpret the described huge variability could be welcomed.
    Keywords Chronic respiratory failure ; noninvasive ventilation ; chronic care ; home care ; oxygen prescription ; continuous positive airway pressure ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher PAGEPress Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Hepatic Failure in COVID-19

    Franca Del Nonno / Roberta Nardacci / Daniele Colombo / Ubaldo Visco-Comandini / Stefania Cicalini / Andrea Antinori / Luisa Marchioni / Gianpiero D’Offizi / Mauro Piacentini / Laura Falasca

    Cells, Vol 10, Iss 1103, p

    Is Iron Overload the Dangerous Trigger?

    2021  Volume 1103

    Abstract: Liver injury in COVID-19 patients has progressively emerged, even in those without a history of liver disease, yet the mechanism of liver pathogenicity is still controversial. COVID-19 is frequently associated with increased serum ferritin levels, and ... ...

    Abstract Liver injury in COVID-19 patients has progressively emerged, even in those without a history of liver disease, yet the mechanism of liver pathogenicity is still controversial. COVID-19 is frequently associated with increased serum ferritin levels, and hyperferritinemia was shown to correlate with illness severity. The liver is the major site for iron storage, and conditions of iron overload have been established to have a pathogenic role in development of liver diseases. We presented here six patients who developed severe COVID-19, with biochemical evidence of liver failure. Three cases were survived patients, who underwent liver biopsy; the other three were deceased patients, who were autopsied. None of the patients suffered underlying liver pathologies. Histopathological and ultrastructural analyses were performed. The most striking finding we demonstrated in all patients was iron accumulation into hepatocytes, associated with degenerative changes. Abundant ferritin particles were found enclosed in siderosomes, and large aggregates of hemosiderin were found, often in close contact with damaged mitochondria. Iron-caused oxidative stress may be responsible for mitochondria metabolic dysfunction. In agreement with this, association between mitochondria and lipid droplets was also found. Overall, our data suggest that hepatic iron overload could be the pathogenic trigger of liver injury associated to COVID-19.
    Keywords SARS-CoV-2 ; COVID-19 ; liver ; iron overload ; ferritin ; electron microscopy ; Biology (General) ; QH301-705.5
    Subject code 610
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Neuropathology and Inflammatory Cell Characterization in 10 Autoptic COVID-19 Brains

    Daniele Colombo / Laura Falasca / Luisa Marchioni / Antonella Tammaro / Ganiyat Adenike Ralitsa Adebanjo / Giuseppe Ippolito / Alimuddin Zumla / Mauro Piacentini / Roberta Nardacci / Franca Del Nonno

    Cells, Vol 10, Iss 2262, p

    2021  Volume 2262

    Abstract: COVID-19 presents with a wide range of clinical neurological manifestations. It has been recognized that SARS-CoV-2 infection affects both the central and peripheral nervous system, leading to smell and taste disturbances; acute ischemic and hemorrhagic ... ...

    Abstract COVID-19 presents with a wide range of clinical neurological manifestations. It has been recognized that SARS-CoV-2 infection affects both the central and peripheral nervous system, leading to smell and taste disturbances; acute ischemic and hemorrhagic cerebrovascular disease; encephalopathies and seizures; and causes most surviving patients to have long lasting neurological symptoms. Despite this, typical neuropathological features associated with the infection have still not been identified. Studies of post-mortem examinations of the cerebral cortex are obtained with difficulty due to laboratory safety concerns. In addition, they represent cases with different neurological symptoms, age or comorbidities, thus a larger number of brain autoptic data from multiple institutions would be crucial. Histopathological findings described here are aimed to increase the current knowledge on neuropathology of COVID-19 patients. We report post-mortem neuropathological findings of ten COVID-19 patients. A wide range of neuropathological lesions were seen. The cerebral cortex of all patients showed vascular changes, hyperemia of the meninges and perivascular inflammation in the cerebral parenchyma with hypoxic neuronal injury. Perivascular lymphocytic inflammation of predominantly CD8-positive T cells mixed with CD68-positive macrophages, targeting the disrupted vascular wall in the cerebral cortex, cerebellum and pons were seen. Our findings support recent reports highlighting a role of microvascular injury in COVID-19 neurological manifestations.
    Keywords SARS-CoV-2 ; COVID-19 ; neuropathology ; brain autopsy ; microvascular injury ; Biology (General) ; QH301-705.5
    Subject code 610
    Language English
    Publishing date 2021-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Dying “from” or “with” COVID-19 during the Pandemic

    Fabio De-Giorgio / Vincenzo M. Grassi / Eva Bergamin / Alessandro Cina / Franca Del Nonno / Daniele Colombo / Roberta Nardacci / Laura Falasca / Celeste Conte / Ernesto d’Aloja / Gianfranco Damiani / Giuseppe Vetrugno

    International Journal of Environmental Research and Public Health, Vol 18, Iss 8851, p

    Medico-Legal Issues According to a Population Perspective

    2021  Volume 8851

    Abstract: There is still a lack of knowledge concerning the pathophysiology of death among COVID-19-deceased patients, and the question of whether a patient has died with or due to COVID-19 is still very much debated. In Italy, all deaths of patients who tested ... ...

    Abstract There is still a lack of knowledge concerning the pathophysiology of death among COVID-19-deceased patients, and the question of whether a patient has died with or due to COVID-19 is still very much debated. In Italy, all deaths of patients who tested positive for SARS-CoV-2 are defined as COVID-19-related, without considering pre-existing diseases that may either contribute to or even cause death. Our study included nine subjects from two different nursing homes (Cases 1–4, Group A; Cases 5–9, Group B). The latter included patients who presumably died from CO poisoning due to a heating system malfunction. All subjects tested positive for COVID-19 both ante- and post-mortem and were examined using post-mortem computed tomography prior to autopsy. COVID-19 was determined to be a contributing cause in the deaths of four out of nine subjects (death due to COVID-19; i.e., pneumonia and sudden cardiac death). In the other five cases, for which CO poisoning was identified as the cause of death, the infection presumably had no role in exitus (death with COVID-19). In our attempt to classify our patients as dying with or due to COVID-19, we found the use of complete assessments (both histological analyses and computed tomography examination) fundamental.
    Keywords COVID-19 ; post-mortem computed tomography ; CO intoxication ; pneumonia ; causality ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2021-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Pleural Mesothelial Cells Modulate the Inflammatory/Profibrotic Response During SARS-CoV-2 Infection

    Giulia Matusali / Flavia Trionfetti / Veronica Bordoni / Roberta Nardacci / Laura Falasca / Daniele Colombo / Michela Terri / Claudia Montaldo / Concetta Castilletti / Davide Mariotti / Franca Del Nonno / Maria Rosaria Capobianchi / Chiara Agrati / Marco Tripodi / Raffaele Strippoli

    Frontiers in Molecular Biosciences, Vol

    2021  Volume 8

    Abstract: Although lung fibrosis has a major impact in COVID-19 disease, its pathogenesis is incompletely understood. In particular, no direct evidence of pleura implication in COVID-19-related fibrotic damage has been reported so far. In this study, the ... ...

    Abstract Although lung fibrosis has a major impact in COVID-19 disease, its pathogenesis is incompletely understood. In particular, no direct evidence of pleura implication in COVID-19-related fibrotic damage has been reported so far. In this study, the expression of epithelial cytokeratins and Wilms tumor 1 (WT1), specific markers of mesothelial cells (MCs), was analyzed in COVID-19 and unrelated pleura autoptic samples. SARS-CoV-2 replication was analyzed by RT-PCR and confocal microscopy in MeT5A, a pleura MC line. SARS-CoV-2 receptors were analyzed by RT-PCR and western blot. Inflammatory cytokines from the supernatants of SARS-CoV-2-infected MeT5A cells were analysed by Luminex and ELLA assays. Immunohistochemistry of COVID-19 pleura patients highlighted disruption of pleura monolayer and fibrosis of the sub-mesothelial stroma, with the presence of MCs with fibroblastoid morphology in the sub-mesothelial stroma, but no evidence of direct infection in vivo. Interestingly, we found evidence of ACE2 expression in MCs from pleura of COVID-19 patients. In vitro analysis shown that MeT5A cells expressed ACE2, TMPRSS2, ADAM17 and NRP1, plasma membrane receptors implicated in SARS-CoV-2 cell entry and infectivity. Moreover, MeT5A cells sustained SARS-CoV-2 replication and productive infection. Infected MeT5A cells produced interferons, inflammatory cytokines and metalloproteases. Overall, our data highlight the potential role of pleura MCs as promoters of the fibrotic reaction and regulators of the immune response upon SARS-CoV-2 infection.
    Keywords SARS-CoV-2 ; mesothelial cells ; inflammatory cytokines ; pulmonary fibrosis ; mesothelial to mesenchymal transition ; WT1 ; Biology (General) ; QH301-705.5
    Subject code 570
    Language English
    Publishing date 2021-11-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Chest X-ray Score and Frailty as Predictors of In-Hospital Mortality in Older Adults with COVID-19

    Sara Cecchini / Mirko Di Rosa / Luca Soraci / Alessia Fumagalli / Clementina Misuraca / Daniele Colombo / Iacopo Piomboni / Francesca Carnevali / Enrico Paci / Roberta Galeazzi / Piero Giordano / Massimiliano Fedecostante / Antonio Cherubini / Fabrizia Lattanzio

    Journal of Clinical Medicine, Vol 10, Iss 2965, p

    2021  Volume 2965

    Abstract: Background. The purpose of this study was to evaluate the prognostic impact of chest X-ray (CXR) score, frailty, and clinical and laboratory data on in-hospital mortality of hospitalized older patients with COVID-19. Methods. This retrospective study ... ...

    Abstract Background. The purpose of this study was to evaluate the prognostic impact of chest X-ray (CXR) score, frailty, and clinical and laboratory data on in-hospital mortality of hospitalized older patients with COVID-19. Methods. This retrospective study included 122 patients 65 years or older with positive reverse transcription polymerase chain reaction for severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and with availability to CXRs on admission. The primary outcome of the study was in-hospital mortality. Statistical analysis was conducted using Cox regression. The predictive ability of the CXR score was compared with the Clinical Frailty Scale (CFS) and fever data using Area Under the Curve (AUC) and net reclassification improvement (NRI) statistics. Results. Of 122 patients, 67 died during hospital stay (54.9%). The CXR score (HR: 1.16, 95% CI, 1.04–1.28), CFS (HR: 1.27; 95% CI, 1.09–1.47), and presence of fever (HR: 1.75; 95% CI, 1.03–2.97) were significant predictors of in-hospital mortality. The addition of both the CFS and presence of fever to the CXR score significantly improved the prediction of in-hospital mortality (NRI, 0.460; 95% CI, 0.102 to 0.888; AUC difference: 0.117; 95% CI, 0.041 to 0.192, p = 0.003). Conclusions. CXR score, CFS, and presence of fever were the main predictors of in-hospital mortality in our cohort of hospitalized older patients with COVID-19. Adding frailty and presence of fever to the CXR score statistically improved predictive accuracy compared to single risk factors.
    Keywords chest radiographic score ; COVID-19 pneumonia ; frailty ; in-hospital mortality ; Medicine ; R
    Subject code 310
    Language English
    Publishing date 2021-07-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Brown Midrib forage sorghum silage for the dairy cow

    Matteo Crovetto / Gianluca Galassi / Luca Rapetti / Daniele Colombo / Stefania Colombini

    Italian Journal of Animal Science, Vol 9, Iss 3, Pp e53-e

    nutritive value and comparison with corn silage in the diet

    2010  Volume 53

    Abstract: Rumen dry matter and fibre digestibility of brown midrib (BMR) sorghum forage silage (SF) in comparison to corn silage (CS) was determined in situ using 3 fistulated dry cows. The effect of replacing CS with SF on milk production was studied in a change- ... ...

    Abstract Rumen dry matter and fibre digestibility of brown midrib (BMR) sorghum forage silage (SF) in comparison to corn silage (CS) was determined in situ using 3 fistulated dry cows. The effect of replacing CS with SF on milk production was studied in a change-over design with 58 lactating Italian Friesian cows fed two diets with similar composition. CS had a higher (P<0.001) rapidly degradable dry matter (DM) fraction than SF (33.1 vs. 23.7, respectively), whilst the slowly degradable fraction was not different (46.3 vs. 48.7). Overall, the extent of DM rumen degradability was higher for CS. Rumen digestion rate of neutral detergent fibre (aNDFom) tended to be higher (P=0.06) for SF than CS (3.08 vs. 2.49 %/h, respectively); however, effective rumen degradability of fibre was not different between silages. Neither milk yield (kg/d) and 4%-fat corrected milk nor milk protein and fat contents were affected by treatment. Cows fed CS diet had lower (P<0.05) milk urea content compared with their SF counterparts (19.9 vs. 21.5 mg/dL,) suggesting a better nitrogen utilization at the rumen level. In conclusion, feeding a BMR sorghum forage resulted in milk yield and quality similar to corn silage. However, to obtain comparable milk production as corn silage, the SF-based diet had to be supplemented with more starch from corn meal.
    Keywords BMR sorghum forage ; NDF rumen degradability ; Milk production ; Animal culture ; SF1-1100 ; Agriculture ; S ; DOAJ:Animal Sciences ; DOAJ:Agriculture and Food Sciences
    Subject code 630
    Language English
    Publishing date 2010-09-01T00:00:00Z
    Publisher PAGEPress Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Dachshund Depletion Disrupts Mammary Gland Development and Diverts the Composition of the Mammary Gland Progenitor Pool

    Xuanmao Jiao / Zhiping Li / Min Wang / Sanjay Katiyar / Gabriele Di Sante / Mehdi Farshchian / Andrew P. South / Cinzia Cocola / Daniele Colombo / Rolland Reinbold / Ileana Zucchi / Kongming Wu / Ira Tabas / Benjamin T. Spike / Richard G. Pestell

    Stem Cell Reports, Vol 12, Iss 1, Pp 135-

    2019  Volume 151

    Abstract: Summary: DACH1 abundance is reduced in human malignancies, including breast cancer. Herein DACH1 was detected among multipotent fetal mammary stem cells in the embryo, among mixed lineage precursors, and in adult basal cells and (ERα+) luminal ... ...

    Abstract Summary: DACH1 abundance is reduced in human malignancies, including breast cancer. Herein DACH1 was detected among multipotent fetal mammary stem cells in the embryo, among mixed lineage precursors, and in adult basal cells and (ERα+) luminal progenitors. Dach1 gene deletion at 6 weeks in transgenic mice reduced ductal branching, reduced the proportion of mammary basal cells (Lin− CD24med CD29high) and reduced abundance of basal cytokeratin 5, whereas DACH1 overexpression induced ductal branching, increased Gata3 and Notch1, and expanded mammosphere formation in LA-7 breast cells. Mammary gland-transforming growth factor β (TGF-β) activity, known to reduce ductal branching and to reduce the basal cell population, increased upon Dach1 deletion, associated with increased SMAD phosphorylation. Association of the scaffold protein Smad anchor for receptor activation with Smad2/3, which facilitates TGF-β activation, was reduced by endogenous DACH1. DACH1 increases basal cells, enhances ductal formation and restrains TGF-β activity in vivo. : DACH1 abundance, is reduced in human malignancies, including breast cancer. In this article, Dr. Pestell and his colleagues showed that DACH1 is expressed in multipotent mammary gland fetal stem cells and both the adult basal and ERα+ luminal cells, promotes mammary gland stem cell and basal/myoepithelial cell expansion, promotes mammary gland ductal branching, and restrains TGF-β action in the pubertal mammary gland. Keywords: DACH, mammary gland, breast cancer, TGF-β, SARA, stem cells
    Keywords Medicine (General) ; R5-920 ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2019-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Idiopathic ventricular tachycardia

    Claudio Tondo / Corrado Carbucicchio / Antonio Dello Russo / Benedetta Majocchi / Martina Zucchetti / Francesca Pizzamiglio / Fabrizio Bologna / Fabio Cattaneo / Daniele Colombo / Eleonora Russo / Michela Casella

    Journal of Atrial Fibrillation, Vol 7, Iss 5, Pp 26-

    transcatheter ablation or antiarrhythmic drugs?

    2015  Volume 29

    Abstract: Introduction Ventricular tachycardia or frequent premature ventricular contractions (PVCs) can occur in the absence of any detectable structural heart disease. In this clinical setting, these arrhythmias are termed idiopathic. Usually, they carry a ... ...

    Abstract Introduction Ventricular tachycardia or frequent premature ventricular contractions (PVCs) can occur in the absence of any detectable structural heart disease. In this clinical setting, these arrhythmias are termed idiopathic. Usually, they carry a benign prognosis and any potential ablative intervention is carried out if patients are highly symptomatic or, more importantly, if frequent ventricular arrhythmias can lead to ventricular dysfunction. Methods In this paper, different forms of idiopathic ventricular tachycardia are reviewed. Outflow tract ventricular tachycardia from the right ventricle is the most frequent form of the so-called idiopathic ventricular tachycardia. Other forms of idiopathic ventricular arrhythmias include ventricular tachycardia/PVCs arising from tricuspid annulus, from the mitral annulus, inter-fascicular ventricular tachycardia and papillary muscle ventricular tachycardia. When interventional treatment is deemed necessary, detailed mapping ( earliest activation during VT/PVC, pace mapping ) is crucial as to identify the successful ablation site. Catheter ablation more than antiarrhythmic drug treatment is usually highly effective in eliminating idiopathic ventricular arrhythmias and providing prevention of recurrence. Conclusion Idiopathic VTs are not considered life-threatening arrhythmias and, prevention of recurrences is often achieved by means of catheter ablation that provides an improvement of quality of life. The overall acute success rate of catheter ablation is about 85-90% with a long–term prevention of arrhythmia recurrence of about 75-80%. It is advisable that the procedure is carried out by electrophysiologists with expertise in VT catheter ablation and extensive knowledge of cardiac anatomy as to ensure a high success rate and reduce the likelihood of major complications.
    Keywords Internal medicine ; RC31-1245 ; Medicine ; R
    Subject code 616
    Language English
    Publishing date 2015-02-01T00:00:00Z
    Publisher CardioFront
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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