Trusele de detectare rapidă a antigenului (RAD) pentru sindromul respirator acut sever coronavirus 2 sunt utilizate pe scară largă ca test de screening primar în Japonia, deoarece diagnosticul rapid al bolii coronavirus 2019 (COVID-19) este esențial pentru controlul infecției. Raportăm cazuri cu rezultate fals pozitive ale testului RAD într-o secție pentru pacienții cu dizabilități. Testele RAD pot evoca riscuri operaționale ale spitalului. Este de dorit ca efectuarea corectă a testului PCR atunci când pacienții sunt internați într-o secție de tratament medical cu simptome COVID-19.

Testarea microbiologică a bolii coronavirus 2019

Abstract

Diagnosticul microbiologic al bolii coronavirusului 2019 (COVID-19) se efectuează în principal prin testul de amplificare a acidului nucleic (NAAT) și testul antigenului. Deși NAAT este testul de diagnosticare standard, utilizarea acestuia este limitată de resursele insuficiente de laborator și de timpul lung de răspuns. Au fost introduse teste NAAT la punctul de îngrijire pentru a remedia aceste neajunsuri, dar sensibilitatea lor variată și constrângerile de resurse rămân o preocupare. Testele antigenului necesită mai puține resurse, dar au o sensibilitate redusă. Cu toate acestea, testele de sensibilitate scăzută pot fi utile în funcție de situație. În contrast, în unele faze clinice ale COVID-19, testele de înaltă sensibilitate pot oferi rezultate fals negative. Prin urmare, este necesară strategia corectă de testare pentru un diagnostic precis. În această recenzie, sunt discutate caracteristicile și aplicațiile clinice ale testelor microbiologice disponibile în Japonia (NAAT, testul antigenului și testul anticorpilor). Diagnosticul clinic al COVID-19 este ușor complicat, iar cazurile în care infecția se răspândește de la indivizii infectați asimptomatic sunt numeroase; prin urmare, diagnosticul de laborator este esențial pentru a preveni transmiterea ulterioară.

Recombinant SARS-CoV-2 Spike Glycoprotein(S) (D614G), Partial
E80028	EpiGentek	EUR 388.30 EUR 860.20	20 ul 100 ul

Spike (SARS-CoV-2) Lentivirus
78010-2	BPS Bioscience	500 µl x 2	EUR 2095
Description: Cell entry of SARS-CoV-2 depends on the binding of viral spike protein to cellular receptor ACE2. The SARS-CoV-2 Spike Lentivirus are replication incompetent, HIV-based, VSV-G pseudotyped lentiviral particles that are ready to be transduced into almost all types mammalian cells, including primary and non-dividing cells. The particles contain the full length SARS-CoV-2 spike gene (QHD43416.1) driven by an EF1a promoter._x000D_

3CL Protease (SARS-CoV-2)
100823-2	BPS Bioscience	500 µg_x000D_	EUR 3360
Description: Severe acute respiratory Coronavirus 2 3C-like protease (SARS-CoV-2 3CL Protease), GenBank Accession No. YP_009725301, a.a. 1-306(full length), expressed in an E. coli expression system, MW=34 kDa.

SARS-CoV-2 Spike S1 RBD Protein, Avi-His-tag
E80024	EpiGentek	EUR 635.80 EUR 4995.10	100 ul 1 ml

SARS-CoV-2 Spike S1 RBD Protein, Mouse Fc-fusion
E80026	EpiGentek	EUR 588.50 EUR 823.90	20 ul 50 ul

SARS-CoV-2 Spike S1 (16-685) Protein, Avi-His-tag
E80021	EpiGentek	EUR 635.80 EUR 4276.80	100 ul 1 ml

SARS-CoV-2 Spike S1 RBD (V367F) Protein, Avi-His-tag
E80023	EpiGentek	EUR 635.80 EUR 3934.70	100 ul 1 ml

PLPro, His-tag (SARS-CoV-2)
100735-2	BPS Bioscience	1 mg	EUR 3000
Description: SARS-Cov-2 papain-like protease (PLPro), part of a large replicase polyprotein 1ab (E1564-Y1882), GenBank Accession No. QHD43415, with a N-terminal His-tag, expressed in an E. coli expression system. MW=38 kDa.

NSP10/NSP16 Complex (SARS-CoV-2)
100747-2	BPS Bioscience	1 mg	EUR 2500
Description: Complex of SARS-CoV-2 nonstructural protein 10 (NSP10), GenBank Accession No. YP_009725306.1, a.a. 1-139(full length), with N-terminal FLAG-tag, MW=16 kDa and SARS-CoV-2 nonstructural protein 16 (NSP16), Genbank Accession No. YP_009725311, a.a. 1-298(full length), with N-terminal His-tag, MW=34 kDa, co-expressed in a HEK293 cell expression system.

NSP7, His-tag (SARS-CoV-2)
100829-2	BPS Bioscience	1 mg	EUR 2600
Description: SARS-CoV-2 nonstructural protein 7 (NSP7), Genbank Accession No.: YP_009742614, a.a. 1-84(full length), with C-terminal His-tag, expressed in an E. coli expression system. MW= 10 kDa.

NSP8, His-tag (SARS-CoV-2)
100830-2	BPS Bioscience	1 mg	EUR 2730
Description: SARS-CoV-2 nonstructural protein 8 (NSP8), Genbank Accession No.: YP 009725304.1, a.a. 1-198(full length), with C-terminal His-tag, expressed in an E. coli expression system. MW= 23 kDa.

Anti-Nucleocapsid Antibody (SARS-CoV-2 )
100861-2	BPS Bioscience	100 µg	EUR 420
Description: Recombinant human monoclonal antibody recognizing the SARS-CoV-2 Nucleocapsid (N) protein.

ORF9b, GST-Tag (SARS-CoV-2)
100962-2	BPS Bioscience	1 mg	EUR 2720
Description: Recombinant ORF9b, full length, encompassing amino acids 1-97(end). This recombinant protein corresponds to SARS-CoV-2 accessory protein ORF9b. It was expressed in E.coli and contains an N-terminal GST tag and a prescission protease cleavage site. The recombinant protein is >90% pure following GST affinity purification.

SARS-CoV-2 Spike S1 (13-665) Protein, Fc Fusion, Avi-tag
E80020	EpiGentek	EUR 635.80 EUR 4276.80	100 ul 1 ml

SARS-CoV-2 Spike S1 (16-685) Protein, Fc Fusion, Avi-tag
E80022	EpiGentek	EUR 635.80 EUR 4276.80	100 ul 1 ml

SARS-CoV-2 Spike S1 RBD Protein, Human Fc-Fusion, Avi-Tag
E80025	EpiGentek	EUR 635.80 EUR 3934.70	100 ul 1 ml

3CL Protease (SARS-CoV-2) Assay Kit
79955-2	BPS Bioscience	384 rxns.	EUR 1265
Description: The 3CL Protease Assay Kit is designed to measure 3CL Protease activity for screening and profiling applications, in a homogeneous assay with no time-consuming washing steps. 3CL inhibitor GC376 is also included as an inhibitor control.

Spike S1, Fc fusion (SARS-CoV-2)
100688-2	BPS Bioscience	50 µg	EUR 505
Description: SARS-CoV-2 2019-nCoV Spike protein S1, also known as SARS-CoV s1 and coronavirus spike S1, GenBank Accession No. QHD43416.1, a.a. 16-685, with C-terminal Fc-tag, expressed in a CHO cell expression system. MW= 160 kDa.

Anti-Spike S1 Antibody (SARS-CoV-2)
100715-2	BPS Bioscience	100 µg	EUR 440
Description: Recombinant human monoclonal antibody recognizing the SARS-CoV-2 Spike RBD glycoprotein. This antibody cross-reacts with the Spike protein from the SARS-CoV virus.

Spike S2, Fc-Tag (SARS-CoV-2)
100895-2	BPS Bioscience	500 µg_x000D_	EUR 1815
Description: SARS-CoV-2 Spike protein S2 subunit, also known as 2019-nCoV Spike S2, GenBank Accession No. MN908947, a.a. 686-1212, with C-terminal Fc-tag, expressed in a CHO cell expression system. MW=130 kDa.

SARS-CoV-2 Nucleocapsid Protein, Avi-His-tag
E80027-2	EpiGentek	100 ul	EUR 4087.6

3CL Protease, Untagged (SARS-CoV-2) Assay Kit
78042-2	BPS Bioscience	384 rxns.	EUR 1210
Description: The 3CL Protease Assay Kit is designed to measure 3CL Protease sactivity for screening and profiling applications, in a homogeneous assay with no time-consuming washing steps.

Spike (SARS-CoV-2) Pseudotyped Lentivirus (Luciferase Reporter)
79942-2	BPS Bioscience	500 µl x 2	EUR 4405
Description: The pandemic coronavirus disease 2019 (COVID-19) is caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). As the first step of the viral replication, the virus attaches to the host cell surface before entering the cell. The viral Spike protein recognizes and attaches to the Angiotensin-Converting Enzyme 2 (ACE2) receptor found on the surface of type I and II pneumocytes, endothelial cells, and ciliated bronchial epithelial cells. Drugs targeting the interaction between the Spike protein of SARS-CoV-2 and ACE2 may offer protection against the viral infection._x000D_The SARS-CoV-2 Spike Pseudotyped Lentivirus were produced with SARS-CoV-2 Spike (Genbank Accession #QHD43416.1) as the envelope glycoproteins instead of the commonly used VSV-G. These pseudovirions also contain the firefly luciferase gene driven by a CMV promoter, therefore, the spike-mediated cell entry can be conveniently measured via luciferase reporter activity. The SARS-CoV-2 Spike pseudotyped lentivirus can be used to measure the activity of neutralizing antibody against SARS-CoV-2 in a Biosafety Level 2 facility._x000D_ _x000D_

Spike (SARS-CoV-2) Pseudotyped Lentivirus (eGFP Reporter)
79981-2	BPS Bioscience	500 µl x 2	EUR 5245
Description: The pandemic coronavirus disease 2019 (COVID-19) is caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). As the first step of the viral replication, the virus attaches to the host cell surface before entering the cell. The viral Spike protein recognizes and attaches to the Angiotensin-Converting Enzyme 2 (ACE2) receptor found on the surface of type I and II pneumocytes, endothelial cells, and ciliated bronchial epithelial cells. Drugs targeting the interaction between the Spike protein of SARS-CoV-2 and ACE2 may offer protection against the viral infection._x000D_The SARS-CoV-2 Spike Pseudotyped Lentivirus were produced with SARS-CoV-2 Spike (Genbank Accession #QHD43416.1) as the envelope glycoproteins instead of the commonly used VSV-G. These pseudovirions also contain the enhanced GFP gene driven by a CMV promoter, therefore, the spike-mediated cell entry can be conveniently determined via eGFP activity. The SARS-CoV-2 Spike pseudotyped lentivirus can be used to measure the activity of neutralizing antibody against SARS-CoV-2 in a Biosafety Level 2 facility._x000D_

Spike S1 RBD, His-tag (SARS-CoV-2)
100687-2	BPS Bioscience	100 µg	EUR 520
Description: SARS-CoV-2 2019-nCoV Spike protein S1 subunit, receptor binding domain (RBD), also known as SARS-CoV-2 spike RBD, novel coronavirus spike RBD and nCoV spike RBD, GenBank Accession No. QHD43416.1, a.a. 319-541, with C-terminal His-tag, expressed in a CHO cell expression system. MW= 39 kDa.