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排序方式: 共有125条查询结果,搜索用时 0 毫秒
61.
Pietrogrande M De Vita S Zignego AL Pioltelli P Sansonno D Sollima S Atzeni F Saccardo F Quartuccio L Bruno S Bruno R Campanini M Candela M Castelnovo L Gabrielli A Gaeta GB Marson P Mascia MT Mazzaro C Mazzotta F Meroni P Montecucco C Ossi E Piccinino F Prati D Puoti M Riboldi P Riva A Roccatello D Sagnelli E Scaini P Scarpato S Sinico R Taliani G Tavoni A Bonacci E Renoldi P Filippini D Sarzi-Puttini P Ferri C Monti G Galli M 《Autoimmunity reviews》2011,10(8):444-454
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F. LaiE. Pini G. AngioniM.L. Manca J. PerricciC. Sinico A.M. Fadda 《European journal of pharmaceutics and biopharmaceutics》2011,79(3):552-558
In this paper, orally disintegrating tablets (ODT) were prepared using nanocrystal formulations in order to optimise dissolution properties of lipophilic, poorly soluble drug piroxicam (PRX). Different nanocrystal formulations were prepared using a high pressure homogenisation technique and poloxamer 188 as stabiliser. Characterisation of PRX nanocrystal ODT was carried out by infrared spectroscopy (FTIR), X-ray powder diffractometry (XRPD), differential scanning calorimetry and photon correlation spectroscopy. Dissolution study of PRX ODT was performed in distilled water (pH 5.5) and was compared to that of PRX coarse suspension ODT, PRX/poloxamer 188 physical mixture and bulk PRX samples. The XRPD and FTIR studies demonstrated that the homogenisation process led to a polymorphic transition from form I (bulk commercial PRX) to form III and monohydrate form of the nanocrystals. All ODT formulations prepared using PRX nanosuspensions showed a higher PRX dissolution rate compared with the ODT prepared with the coarse PRX. Since the solubility of the different PRX polymorphic forms increased only slightly from bulk PRX (form I) to monohydrate, form II and form III, we can conclude that the improvement in PRX dissolution rate is mainly caused by the increased surface-to-volume ratio due to the submicron dimension of the drug particles. 相似文献
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Greco P Palmisano A Vaglio A Scoditti U Antonelli MY Crisi G Sinico RA Buzio C 《Rheumatology (Oxford, England)》2007,46(8):1375-1376
SIR, Central nervous system (CNS) involvement is rare in Wegener'sgranulomatosis (WG): the spectrum of CNS manifestations includescerebrovascular events, seizures and cranial nerve abnormalities[1, 2]. Meningitis is exceedingly rare, and its diagnosis oftenchallenging [1–3]. A 57-yr-old man was admitted to hospital because of untreatableheadache, photophobia, neck stiffness and paranasal sinus pain.Eight years earlier. WG had been diagnosed because of inflammatoryinvolvement of the upper (sinusitis, anosmia) and lower (pulmonarynodules, histologically showing granulomas with giant cellsand necrotizing vasculitis) 相似文献
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Cavazzana I Franceschini F Quinzanini M Manera C Del Papa N Maglione W Comina D Radice A Sinico RA Cattaneo R 《Clinical and experimental rheumatology》2006,24(1):59-64
OBJECTIVE: To assess the prevalence of anti-Ro/SSA in RA and to analyse clinical and serological features of anti-Ro/SSA positive patients with RA. METHODS: 195 consecutive patients affected by RA were studied by counterimmunoelectrophoresis and ELISA for the detection of anti-Ro/SSA antibodies. Anti-Ro were found in 12 patients, with a prevalence of 6%. These 12 patients were pooled with other 15 patients known to have anti-Ro/SSA antibodies and RA, in order to evaluate their clinical and laboratory features. RESULTS: Anti-Ro positive patients showed a common pattern of joint involvement at onset and a comparable progression of disease compared to anti-Ro negative subjects. In addition, extra-articular manifestations (such as xerophthalmia, xerostomia, scleritis, oral ulcers and amyloidosis) and peculiar autoantibody profile (hypergammaglobulinemia, anti-dsDNA and AMA) were found significantly associated to anti-Ro/SSA positivity. Even though DMARDs withdrawals were more frequently detected in anti-Ro/SSA patients, especially when using gold salts, no statistical difference between the two groups was detected. In addition, anti-TNFalpha treatment did not cause further progression of autoimmunity neither on laboratory nor on clinical ground. CONCLUSION: Anti-Ro/SSA can be detected in about 6% of patients affected by RA. These patients presented a peculiar clinical picture characterised by extra-articular manifestations some of which are known to be anti-Ro/SSA correlated, while others are more disease-specific (amyloidosis, episcleritis). Anti-Ro/SSA are significantly associated with other autoantibodies not specific for RA such as anti-dsDNA and AMA. Treatment with anti-TNF drugs did not cause further progression of autoimmunity neither on laboratory nor on clinical ground. 相似文献
67.
Increased serum levels of IgA1-IgG immune complexes and anti-F(ab')2 antibodies in patients with primary IgA nephropathy 总被引:1,自引:1,他引:1 下载免费PDF全文
F P Schena A Pastore N Ludovico R A Sinico S Benuzzi V Montinaro 《Clinical and experimental immunology》1989,77(1):15-20
A solid-phase ELISA was used to detect IgA1 immune complexes (IgA1 ICs) containing IgG and IgM in 38 serum samples from 30 patients with primary IgA nephropathy (IgAN) and 14 subjects with non-IgA chronic glomerulonephritis. A jackfruit lectin, jacalin, was used as the substrate for the selective binding of human IgA1 ICs in serum PEG precipitate (7%). The presence of IgG, A and M antibodies against the F(ab')2 region of IgG was also investigated by the solid-phase ELISA. Six patients were studied during remission and relapse (fever, upper respiratory tract infection and macroheamaturia). The results showed significant increases in serum levels of IgA1 ICs (P less than 0.001) in 39.4% of the IgAN patients, IgA1-IgG ICs (P less than 0.001) in 68.4%, and IgA1-IgM ICs (P less than 0.002) in 10.5% of the patients. A significant increase in IgA1-IgG ICs was observed during relapse (P less than 0.02). Significantly high values of IgG (P less than 0.003) and IgA (P less than 0.001) antibodies directed at the F(ab')2 region of IgG were found. A significant increase in anti F(ab')2 antibodies (class IgA and IgM) was seen in the acute phase of the disease. The data suggest that an increased production of IgA1 ICs occurs in IgAN patients; ICs are mainly IgA1-IgG ICs during relapse. The presence of high serum levels of IgG and IgA antibodies against the F(ab')2 region of IgG indicates that in addition to the multiple anomalies of IgA regulation described in IgAN patients there may be further aberrances. 相似文献
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Chiara Sinico Alessandro De Logu Francesco Lai Donatella Valenti Maria Manconi Giuseppe Loy Leonardo Bonsignore Anna Maria Fadda 《European journal of pharmaceutics and biopharmaceutics》2005,59(1):161-168
The effect of liposomal inclusion on the in vitro antiherpetic activity of Artemisia arborescens L. essential oil was investigated. In order to study the influence of vesicle structure and composition on the antiviral activity of the vesicle-incorporated oil, multilamellar (MLV) and unilamellar (SUV) positively charged liposomes were prepared by the film method and sonication. Liposomes were obtained from hydrogenated (P90H) and non-hydrogenated (P90) soy phosphatidylcholine. Formulations were examined for their stability for over one year, monitoring the oil leakage from vesicles and the average size distribution. The antiviral activity was studied against Herpes simplex virus type 1 (HSV-1) by a quantitative tetrazolium-based colorimetric method. Results showed that Artemisia essential oil can be incorporated in good amounts in the prepared vesicular dispersions. Stability studies pointed out that vesicle dispersions were very stable for at least six months and neither oil leakage nor vesicle size alteration occurred during this period. After one year of storage oil retention was still good, but vesicle fusion was present. Antiviral assays demonstrated that the liposomal incorporation of A. arborescens essential oil enhanced its in vitro antiherpetic activity especially when vesicles were made with P90H. On the contrary, no significant difference in antiviral activity was observed between the free and SUV-incorporated oil. 相似文献
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