MUDr. Dana Maňasková

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nemoci-sympt/VIROLOGIE/enteroviry/podpurne

Guazuma ulmifolia LAM., Sterculiaceae

  • Malý až středně velký strom z čeledi slézovité
  • Rozšířený zejména na územích Karibiku, Jižní Ameriky, Střední Ameriky a Mexika.
  • Slouží jako důležité krmivo pro hospodářská zvířata. Plody jsou jedlé jak vařené tak i syrové.
  • Odvar ze sušené kůry a sušených plodů
    • Používá k léčbě průjmů, silného krvácení a děložních bolestí
  • Léčitelé v Guatemale připravují odvar z kůry na zánět žaludku a tlumí žaludeční bolesti
  • Pro podporu růstu vlasů
  • K likvidaci parazitů ve vlasech
  • K léčení různých kožních problémů
  • Snižuje tepovou frekvenci a krevní tlak
  • Extrakt z listů a kůry má antibakteriální působení
  • I proti jednoduchému oparu typu 1.
  • cs.wikipedia.org/wiki/Guazuma_ulmifolia

Stryphnodendron adstringens (MART.) COVILLE, Leguminosae

  • Antiviral Effect of on Poliovirus and Bovine Herpesvirus
  • Demonstrated that G. ulmifolia and S. adstringens
    • Inhibited Bovine Herpes V-1 and Polio-1 replication
    • Blocked the synthesis of viral antigens in infected cell cultures
  • Highest percentages of viral inhibition were found for
    • G. ulmifolia EtOAcF (ethyl acetate fractions)
      • Inhibited BHV-1 and P-1 replication by 100% and 99%
    • S. adstringens AqF (aqueous fractions)
      • Inhibiting BHV-1 and P-1 by 97% and 93%
  • www.jstage.jst.go.jp/article/bpb/29/6/29_6_1092/_article/-char/ja/

Pleconaril

  • Originally developed as a capsid inhibitor for rhinovirus, and it was later found to be active against EV-D68 (Figure 2B). Pleconaril (1) failed in the clinical trial for the treatment of rhinovirus-induced common colds due to a lack of efficacy.25 The X-ray crystal structure of EV-D68 virion in complex with pleconaril (1) was solved at 2.32 A resolution (PDB: 4WM7) (Figure 2C).18 Pleconaril (1) fits in a hydrophobic drug-binding pocket in the canyon region located at the VP1 protein and protects the virion against thermal inactivation. It inhibits EV-D68 replication in cell culture with single-digit to submicromolar potency as shown by multiple studies (Table 1),26–28 and it is often used as a positive control compound in antiviral assays as well as in mechanistic studies. Pleconaril (1) is active against multiple EV-D68 strains tested. However, it was not active against the close-related EV-A71 virus.28, 29 Resistance to pleconaril (1) was mapped to VP1-V81A (V69A in the 4WM7 numbering), a residue that locates right above the benzene ring of pleconaril (1). Mutating a bulky valine to a smaller alanine is likely to diminish the hydrophobic interactions between VP1 and pleconaril (1), leading to drug resistance. However, the fitness of the VP1-V69A mutant virus was not studied, and it is not clear whether this drug resistant mutation might be a potential concern or not.
  • www.ncbi.nlm.nih.gov/pmc/articles/PMC8055446/

Pocapavir (V-073)

  • Is a capsid inhibitor
  • Recently demonstrated activity in an oral poliovirus vaccine human challenge model
  • pubmed.ncbi.nlm.nih.gov/25316866/

Antiviral Activity of Pocapavir in a Randomized, Blinded, Placebo-Controlled Human Oral Poliovirus Vaccine Challenge Model

  • Adults were challenged with monovalent oral poliovirus type 1 vaccine (mOPV1)
  • Subsequently treated with capsid inhibitor pocapavir or placebo.
  • The time to virus negativity in stool was determined.
  • Treatment with pocapavir was safe and significantly accelerated virus clearance.
  • pubmed.ncbi.nlm.nih.gov/27932608/

Target RdRp of poliovirus


Červené víno

  • Red grapes possess antibacterial and antiviral properties.
  • Antiviral properties are also useful to fight against the polio virus and herpes simplex virus.
  • www.stylecraze.com/articles/benefits-of-red-grapes-for-skin-hair-and-health/

2',2'-Difluoro-2'-deoxycytidine Gemcitabine

  • As a Potential Antipoliovirus Agent
  • pubmed.ncbi.nlm.nih.gov/27733043/
  • Gemcitabine, a nucleoside analogue used in tumor chemotherapy
  • Gemcitabine inhibited PV Mahoney replication with an IC50 of 0.3 mcM
  • Completely protected HeLa cells from PV-induced cytopathic effects at 25 mcM
    • Without detectable toxicity for cell viability
  • Gemcitabine metabolite directly inhibited the ability of PV RNA polymerase to synthesize or elongate PV RNA
  • Because PV RNA polymerase is somehow conserved among species in the Picornaviridae family
    • Gemcitabine may be further developed as an attractive broad-spectrum antiviral for PV and others.
  • pubmed.ncbi.nlm.nih.gov/27733043/
O úroveň výše

Poslední aktualizace: 8. 1. 2023 19:31:23
© Dana Maňasková, metabalance.cz
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