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IN VITRO DATA
Antiviral action may happen at two levels: virus
assembly and anchorage (Lavier et a., 1989). According to several authors
Hypericum would operates on HIV principal capsid causing radical change
in movements (De Gar et al., 1992). Other authors think Hypericum action
may be at bound level between gp120 and CD4 receptor of lymphocites, where
Hypericum would inhibits Sincizia generation and fusion.
Importance seem to have light in Hypericum action
mechanism (Stevenson et al., 1993; Hidson et al., 1993). Light action exposes
Hypericum preparates to photosensibilization and phototoxicity risks.
IN VIVO DATA
|
|
Duration (weeks) | Type of Study | Principal
Markers and
Study stage (F) |
Starting
CD4
(mm3) and/or Stage |
Starting Viral Load(CV) (copies/ml) | Results | Treated | Controls | Total treated cases | ||
| Reference | Dosage | ||||||||||
| ATN n° 91 1989 | Different (os) N. | Q | Symptoms | Several stages | Benefice | 112 | |||||
| Payne | Posology DNR. N. | 24 | SC | CD4-CD8-Ag p24. (F=I/II) | ARC | None | 60 | ||||
| Cooper 1990
James 1990 |
~1 mg/die
(os) N.
Allowed AZT |
16 | SO | Safety, CD4, Ag p24 | Several stages | 10 with Ip. Slight impr. In CD4 | 26 | ||||
| Furner 1991 | 0,5 mg, 2mg, 4 mg e 8 mg/die | 12 | SO | Safety, CD4. (F= I) | Several stages | Safety see study,
CD4 none |
40 | ||||
| McAuliffe 1993 | 0.75
mg/kg X 3/set o
1 mg/kg X 2/set (ev) S. |
SC | Safety, CD4. (F=I) | < 300 | Safety see study,
CD4 none |
25 | |||||
| Steinbeck-Klose 1993 | 2 ml ev 2 times week + 1.8 mg/die (os) N. | 160 | SC | CD4, CD4/CD8. (F=I/II) | Classific. CDC: 3=II, 8=III, 4= IVB, 3=IV-C1 | Improvement | 18 | ||||
| Vansover 1996 | 1.2 ml/set ev + 3.6 mg/die (os) N. | 192 | SC | CV, Ag p24. (F=I/II) | 5 log10 | Improvement | 18 | ||||
| Pitisuttithum 1996 | 0.05
mg/kg (os) o
0.16 mg/kg (os) S. |
4 | SC | Safety. (F=I) | 217-423, 1° dose
24-406, 2° dose. |
Safety see study, | 4 | ||||
Considerations:
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