Abstract
The aim of the present study was to investigate the effect of somatostatin administration in arthritic rats. Inflammation was induced by daily interplantar injection of 100 μl of Freund's complete adjuvant into the left hind paw of the rat. Arthritis developed 20 days following the first injection and was stable in the inoculate paw. Arthritic rats were treated interplantarly with somatostatin (5 or 10 μg) or with indomethacin (100 μg) daily for 14 days. Inflammatory response was studied at 12 h, 7 and 14 days following drug administration. The effect of somatostatin was determined by local (into popliteal lymph nodes) and systemic production of β-endorphin. Our results showed that somatostatin treatment significantly increased β- endorphin levels in the blood and lymphocytes from popliteal lymph nodes. Greater efficiency was seen when 5 μg instead of 10 μg of somatostatin was used. A significant decrease of absolute leukocytosis was observed at the 14th day following somatostatin administration. Moreover, a significant reduction of plasmatic β-globulins at 12 h and the 7th day and of plasmatic α2-globulins at the 14th day was observed after the beginning of somatostatin treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 2247-2254 |
| Number of pages | 8 |
| Journal | Life Sciences |
| Volume | 64 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - May 7 1999 |
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Keywords
- β-endorphin
- Arthritis
- Chronic inflammation
- Plasma proteins
- Somatostatin
ASJC Scopus subject areas
- Pharmacology
Cite this
Effect of somatostatin on β-endorphin release in rat experimental chronic inflammation. / Corsi, Massimiliano M.; Fulgenzi, Alessandro; Tiengo, Mario; Pravettoni, Giulio; Gaja, Gianfranco; Ferrero, Maria Elena.
In: Life Sciences, Vol. 64, No. 24, 07.05.1999, p. 2247-2254.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of somatostatin on β-endorphin release in rat experimental chronic inflammation
AU - Corsi, Massimiliano M.
AU - Fulgenzi, Alessandro
AU - Tiengo, Mario
AU - Pravettoni, Giulio
AU - Gaja, Gianfranco
AU - Ferrero, Maria Elena
PY - 1999/5/7
Y1 - 1999/5/7
N2 - The aim of the present study was to investigate the effect of somatostatin administration in arthritic rats. Inflammation was induced by daily interplantar injection of 100 μl of Freund's complete adjuvant into the left hind paw of the rat. Arthritis developed 20 days following the first injection and was stable in the inoculate paw. Arthritic rats were treated interplantarly with somatostatin (5 or 10 μg) or with indomethacin (100 μg) daily for 14 days. Inflammatory response was studied at 12 h, 7 and 14 days following drug administration. The effect of somatostatin was determined by local (into popliteal lymph nodes) and systemic production of β-endorphin. Our results showed that somatostatin treatment significantly increased β- endorphin levels in the blood and lymphocytes from popliteal lymph nodes. Greater efficiency was seen when 5 μg instead of 10 μg of somatostatin was used. A significant decrease of absolute leukocytosis was observed at the 14th day following somatostatin administration. Moreover, a significant reduction of plasmatic β-globulins at 12 h and the 7th day and of plasmatic α2-globulins at the 14th day was observed after the beginning of somatostatin treatment.
AB - The aim of the present study was to investigate the effect of somatostatin administration in arthritic rats. Inflammation was induced by daily interplantar injection of 100 μl of Freund's complete adjuvant into the left hind paw of the rat. Arthritis developed 20 days following the first injection and was stable in the inoculate paw. Arthritic rats were treated interplantarly with somatostatin (5 or 10 μg) or with indomethacin (100 μg) daily for 14 days. Inflammatory response was studied at 12 h, 7 and 14 days following drug administration. The effect of somatostatin was determined by local (into popliteal lymph nodes) and systemic production of β-endorphin. Our results showed that somatostatin treatment significantly increased β- endorphin levels in the blood and lymphocytes from popliteal lymph nodes. Greater efficiency was seen when 5 μg instead of 10 μg of somatostatin was used. A significant decrease of absolute leukocytosis was observed at the 14th day following somatostatin administration. Moreover, a significant reduction of plasmatic β-globulins at 12 h and the 7th day and of plasmatic α2-globulins at the 14th day was observed after the beginning of somatostatin treatment.
KW - β-endorphin
KW - Arthritis
KW - Chronic inflammation
KW - Plasma proteins
KW - Somatostatin
UR - http://www.scopus.com/inward/record.url?scp=0033532325&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033532325&partnerID=8YFLogxK
U2 - 10.1016/S0024-3205(99)00176-9
DO - 10.1016/S0024-3205(99)00176-9
M3 - Article
VL - 64
SP - 2247
EP - 2254
JO - Life Sciences
JF - Life Sciences
SN - 0024-3205
IS - 24
ER -