These results illustrate how the open nature of the cell-free system can be used as a seamless antibody engineering platform from discovery to preclinical development of aglycosylated monoclonal antibodies and antibody fragments as potential therapeutics.”
“Further study on steam-treated notoginseng, the roots of Panax
notoginseng (Burk.) F.H. Chen (Araliaceae), which is a famous traditional Chinese medicine that is used both in raw and treated forms for a long time, led to the isolation of a new dammarane-type saponin, namely notoginsenoside ST-4. Its structure was elucidated to be 3,12,20(S)-tri-hydroxydammar-24-ene-3-O–d-xylopyranosyl-(12)–d-glucopyranosyl-(12)–d-glu-copyranoside,
based on the detailed analyses of the 1D and 2D NMR spectral data and acidic hydrolysis. Notoginsenoside ST-4 was investigated for its antiviral activity on herpes simplex type 1 (HSV-1) BEZ235 mw and type 2 (HSV-2) in vitro. The 50% effective concentration (EC50) values, AR-13324 determined by plaque reduction assay, were 16.47 +/- 0.67 and 19.44 +/- 1.16M for HSV-1 and HSV-2, respectively, whereas the 50% cytotoxic concentration (CC50) determined by the XTT test on Vero cells was 510.64 +/- 4.56M. As analyzed by attachment assay and penetration assay based on plaque reduction assay, the antiviral activity of notoginsenoside ST-4 was principally due to the penetration inhibition effects, which was confirmed by fluorescence S63845 microscopy observation that notoginsenoside ST-4 blocked the penetration of virus. Therefore, notoginsenoside ST-4 might be a promising agent for herpes simplex virus infection.”
“Objective To determine the presence of chlamydial species including recently described chlamydial agents as well as the human pathogen Chlamydophila pneumoniae in feline conjunctivitis.
Animal studied Twenty five cats without
and 49 cats with conjunctivitis were tested for chlamydia using a Chlamydiaceae real time (RT) PCR (targeting the 23S rRNA gene sequence), a Chlamydiales PCR (targeting the 16S rRNA gene sequence), and cell culture. The PCR products of all positive samples were sequenced and subsequently analyzed using a basic local alignment search tool search.
Results Chlamydiaceae RT PCR and subsequent sequence analyses identified C. pneumoniae in five cats in the conjunctivitis group. The presence of Chlamydophila felis was shown in two cats with conjunctivitis. Chlamydiae related to uncultured members of Chlamydiales were detected in three conjunctivitis cases and in one cat without clinical symptoms.
Conclusion This study detects for the first time, the known human pathogen C. pneumoniae in feline conjunctivitis cases using Chlamydiaceae RT PCR and sequence analyses.