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1.
The capability of a single i.m. injection of betamethasone (Celeston Chronodose®) to modulate a post-operative course was investigated in a placebo-controlled crossover trial with 8 dogs. Two »identical« soft tissue/bone operations were performed on the forelimbs of each animal with an interval of 28 days, to allow a paired comparison of the inflammatory signs and healing process. Significantly less swelling, but not less pain and limping, was observed when the glucocorticoid was administered. No adverse effect of the glucocorticoid was seen on wound and bone healing. The present experimental model is suggested useful for evaluation of anti-inflammatory drug effects in accidental trauma and orthopaedic surgery.  相似文献   

2.
Two controlled studies to determine efficacy in the horse were performed with eltenac, a new injectable, non-steroidal anti-inflammatory drug (NSAID). Clinical trials were carried out with a dose rate of 1 mg/kg body weight in a randomized, placebo-controlled, double-blind design to assess therapeutic efficacy in acute inflammatory disorders and in animals with orthopaedic conditions. In a preliminary pharmacokinetic investigation in six horses mean elimination half-life was 1.7 h after i.v. administration. In the first clinical study, analgesic activity on pain-related lameness was determined in a total of 64 horses. Pain was assessed using a rating scale. Compared with the placebo treatment, eltenac produced significant pain relief after a single i.v. injection for a period of 24 h. In the second trial the anti-oedematous effect was determined in post-operative wound swelling following castration in two groups of 10 colts. After surgery, the horses received either an injection of 1 mg/kg eltenac or a placebo injection on three consecutive days. Swelling was assessed by measuring the diameter of the external preputial fold using two methods: callipers and a rating scale of 0 to 3. Additionally, photographs were taken on days 1, 2 and 4. Compared with the placebo treatment, eltenac inhibited pain and swelling significantly. The effect was maintained for up to 48 h after the last injection.  相似文献   

3.
BACKGROUND: Nonsteroidal anti-inflammatory drugs (NSAIDs) do not always provide sufficient pain relief in dogs with osteoarthritis (OA). HYPOTHESIS: The use of amantadine in addition to NSAID therapy will provide improved pain relief when compared with the use of nonsteroidal analgesics alone in naturally occurring OA in dogs. ANIMALS: Thirty-one client-owned dogs with pelvic limb lameness despite the administration of an NSAID. METHODS: The study was randomized, blinded, and placebo controlled with parallel groups (days 21-42). On day 0, analgesic medications were discontinued. On day 7, all dogs received meloxicam for 5 weeks. On day 21, all dogs received amantadine (3-5 mg/kg once daily per os) or placebo for 21 days, in addition to receiving meloxicam. Assessments were performed before the study and on days 7, 21, and 42. Primary outcome measures were blinded owner assessments of activity using client-specific outcome measures (CSOM) on days 0, 7, 21, and 42. Data were analyzed by a mixed model approach. RESULTS: For CSOM activity, there was a significant time by treatment effect (P=.009). On the basis of the planned post hoc t-tests of postrandomization means, there was a significant difference between treatment groups on day 42 (P=.030), with the amantadine group being more active. CONCLUSIONS AND CLINICAL IMPORTANCE: In dogs with osteoarthritic pain refractory to an NSAID, physical activity is improved by the addition of amantadine. Amantadine might be a useful adjunct therapy for the clinical management of canine osteoarthritic pain.  相似文献   

4.
The direct effects of four non-steroidal anti-inflammatory drugs (NSAIDs) on equine polymorphonuclear (PMN) and mononuclear (MN) leucocyte movement were investigated using two in vitro assay systems. The Boyden chamber microfilter technique measures both chemokinetic and chemotactic locomotion, and the agarose microdroplet assay measures solely chemokinesis. Zymosan-activated plasma (ZAP) and the synthetic peptide N-formyl-methionyl-leucyl-phenylalanine (FMLP) were used as standard chemoattractants for PMN and MN leucocytes, respectively. The actions of six concentrations of each NSAID, indomethacin (50 microM-10 mM), phenylbutazone (10 microM-1 mM), oxyphenbutazone (2.5 microM-500 microM) and flunixin (0.1 microM-50 microM), in suppressing cell movement induced by ZAP and FMLP were investigated. All four drugs exerted inhibitory effects on induced movement of both cell types in the Boyden chamber assay, usually in a concentration-dependent manner, although oxyphenbutazone action on PMN cells occurred only at the highest concentration tested. Significant inhibition of PMN and MN cell locomotion was produced by indomethacin, flunixin and oxyphenbutazone, and inhibition of PMN movement by phenylbutazone occurred in the agarose microdroplet assay. Flunixin was the most potent of the four drugs investigated in both assay systems. The findings may be of importance to the use of phenylbutazone and flunixin as NSAIDs in equine medicine, since the concentrations used were similar to concentrations of both drugs and the phenylbutazone metabolite oxyphenbutazone previously reported to occur in equine plasma and inflammatory exudate.  相似文献   

5.
In placebo-controlled cross-over trials in dogs, two 'identical' operations were performed on the forelimbs of each animal with an interval of 28 days, to evaluate how daily doses of 1.5 g paracetamol, 1.5 g acetylsalicylic acid (ASA) and 0.5 g ASA might modulate an acute post-operative inflammatory reaction. On the third post-operative day the reductions in swelling compared with placebo averaged 33% with 1.5 g paracetamol (P = 0.02), 24% with 1.5 g ASA (P = 0.03) and 15% with 0.5 g ASA (P = 0.18); while the reductions in pain estimates averaged 47% with 1.5 g paracetamol (P = 0.01), 32% with 1.5 g ASA (P = 0.07) and 28% with 0.5 g ASA (P = 0.21). There were no clinical signs of adverse drug effects, such as vomiting, haematochezia, cyanosis or depression. The results disagree with the traditional view that paracetamol has little or no anti-inflammatory effect, and demonstrate that paracetamol may reduce an acute inflammatory reaction, at least as efficiently as ASA. The potential pro-inflammatory effect of ASA in low doses is discussed. It is concluded that paracetamol appears to be a valuable drug against post-operative or post-traumatic sequelae in the veterinary as well as in the human clinic.  相似文献   

6.
Turpentine-induced acute inflammatory responses in chicks were studied experimentally. Foot pad oedema was measured using a plethysmograph. Skin vascular permeability was evaluated using the Evans blue technique. Turpentine injury induced a typical biphasic response when the two parameters of the inflammatory reaction were studied. Some unexpected alterations of the turpentine-induced inflammatory response were seen when chicks received non-steroidal anti-inflammatory drugs. Pretreatment with promethazine, phenylbutazone, methysergide and indomethacin resulted in a decrease in foot oedema. An inhibitory effect upon vascular permeability was found when promethazine, phenylbutazone and indomethacin were used. Methysergide did not inhibit the increase in vascular permeability of the skin. Possible mechanisms are discussed.  相似文献   

7.
OBJECTIVE: To determine potency and selectivity of nonsteroidal anti-inflammatory drugs (NSAID) and cyclooxygenase- (COX-) specific inhibitors in whole blood from horses, dogs, and cats. SAMPLE POPULATION: Blood samples from 30 healthy horses, 48 healthy dogs, and 9 healthy cats. PROCEDURE: Activities of COX-1 and COX-2 were determined by measuring coagulation-induced thromboxane and lipopolysaccharide-induced prostaglandin E2 concentrations, respectively, in whole blood with and without the addition of various concentrations of phenylbutazone, flunixin meglumine, ketoprofen, diclofenac, indomethacin, meloxicam, carprofen, 5-bromo-2[4-fluorophenyl]-3-14-methylsulfonylphenyl]-thiophene (DuP 697), 5,5-dimethyl-3-(3-fluorophenyl)-4-(4-methylsulphonyl) phenyl-2(5H)-furan one (DFU), 3-(3,4-difluorophenyl)-4-(4-(methylsulfonyl)phenyl)-2-(5H)-furanone (MF-tricyclic), and celecoxib. Potency of each test compound was determined by calculating the concentration that resulted in inhibition of 50% of COX activity (IC50). Selectivity was determined by calculating the ratio of IC50 for COX-1 to IC50 for COX-2 (COX-1/COX-2 ratio). RESULTS: The novel compound DFU was the most selective COX-2 inhibitor in equine, canine, and feline blood; COX-1/COX-2 ratios were 775, 74, and 69, respectively. Carprofen was the weakest inhibitor of COX-2, compared with the other COX-2 selective inhibitors, and did not inhibit COX-2 activity in equine blood. In contrast, NSAID such as phenylbutazone and flunixin meglumine were more potent inhibitors of COX-1 than COX-2 in canine and equine blood. CONCLUSIONS AND CLINICAL RELEVANCE: The novel COX-2 inhibitor DFU was more potent and selective in canine, equine, and feline blood, compared with phenylbutazone, flunixin meglumine, and carprofen. Compounds that specifically inhibit COX-2 may result in a lower incidence of adverse effects, compared with NSAID, when administered at therapeutic dosages to horses, dogs, and cats.  相似文献   

8.
The effects of intra-articular injection, on two occasions, 3 weeks apart, of the contrast agent Urografin on the cytological and biochemical characteristics of synovial fluid (SF) were examined in two studies in dogs. The first study provided baseline data in two non-medicated dogs. The second study used a cross-over design whereby 4 dogs received a 7-day oral treatment with either a placebo or meloxicam (0.2 mg/kg body weight daily) with a washout period of 3 weeks, in order to determine the effect of this new non-steroidal anti-inflammatory drug (NSAID) on the response to Urografin injection. SF samples were collected under general anaesthesia prior to and at 24 and 72 h after each Urografin injection. The volume, relative viscosity, white blood cell count and concentrations of protein, lactate dehydrogenase (LDH) and hyaluronic acid of these samples were determined.The results from both studies indicate that intra-articular injection of Urografin provoked a mild local transient inflammatory response, the most dramatic evidence of which was an increase in the white blood cell count in the SF after 24 h. In the second study, comparison of the synovial fluid measurements of the placebo-treated dogs at 24 h after Urografin injection with those prior to injection revealed significant increases in SF volume, white blood cell count, protein concentration and LDH activity and a significant reduction in relative viscosity. At 72 h after injection, only the white blood cell count and relative viscosity were significantly different from the pre-injection values. All of these measurements were, however, associated with high coefficients of variation, which must be taken into account in assessing the usefulness of the model for drug-testing purposes. Nevertheless, the administration of meloxicam significantly reduced the SF volume and white blood cell count at 24 h relative to the effects of concurrent placebo treatment. The general health status of the animals was not disturbed at any time as assessed by clinical and haematological observations. No adverse reactions were observed.Abbreviations LDH lactate dehydrogenase - NSAID non-steroidal anti-inflammatory drug - SF synovial fluid - WBC white blood cell count  相似文献   

9.
Topically applied copper phenylbutazone, phenylbutazone, copper salicylate, salicylate and dimethylsulfoxide glycerol (80:20) were investigated as anti-inflammatory agents in rats and horses. Dimethylsulfoxide and glycerol (80:20) or dimethylsulfoxide, ethanol and glycerol (60:20:20) were used as the drug solvents. Subcutaneously administered carrageenin was used to induce inflammatory oedema, either in the paws of rats or the alar fold of the horse. The severity of the oedema and the anti-inflammatory effect of the drugs were assessed by measuring changes in the paw or alar-fold diameters. Copper salicylate and copper phenylbutazone were effective inhibitors of the inflammatory oedema in both species, but dimethylsulfoxide:glycerol (80:20) was not. In the rat, copper salicylate and copper phenylbutazone were superior anti-inflammatory agents compared to either salicylate or phenylbutazone, respectively. Following the topical application of four times the recommended daily dose of copper phenylbutazone to the horse for 5 days, minor skin irritation occurred and trace concentrations of phenylbutazone (maximum 0.6 microgram/ml) and negligible concentrations of oxyphenbutazone and gamma-hydroxyphenylbutazone were detected in the plasma.  相似文献   

10.
Twenty-nine pruritic, atopic dogs were entered into a double-blind, placebo-controlled, crossover study to evaluate the efficacy of an investigational antiallergenic compound, AHR-13268. Fourteen dogs were evaluated by a veterinary dermatologist (at intervals) and the owner (daily). Fifteen dogs were evaluated only by the owner. The mean (+/- SE) owner scores for pruritus, erythema, and lesions with placebo treatment (higher score = worse signs) were 3.24 (+/- 0.12), 2.73 (+/- 0.12), and 2.61 (+/- 0.09), respectively. With drug treatment, the corresponding scores were 2.89 (+/- 0.12), 2.50 (+/- 0.12), and 2.25 (+/- 0.09). Scores for pruritus and lesions (but not erythema) were significantly better with drug treatment than with placebo treatment. Investigator scores showed similar trends, but the differences were not great enough to be statistically significant. Overall, 11/29 (38%) owners reported their dogs had moderate or better improvement from drug capsules, and 4/29 dogs (14%) improved on placebo capsules. A variety of adverse effects were reported following both drug (9/29 dogs) and placebo (8/29 dogs) capsule administration, but were mild and well tolerated. Results of this study indicate that AHR-13268 has potential for empiric treatment of allergic inhalant dermatitis in some dogs.  相似文献   

11.
BACKGROUND: Use of cyclo-oxygenase-2 specific nonsteroidal anti-inflammatory drugs such as deracoxib has been advocated because of their anti-inflammatory actions and apparently low incidence of gastrointestinal adverse effects. HYPOTHESIS: Deracoxib will cause less endoscopically detectable gastric injury in dogs than aspirin, a nonselective nonsteroidal anti-inflammatory drug. ANIMALS: Twenty-four random source healthy dogs. METHODS: A randomized, placebo-controlled trial compared gastroscopic findings of dogs receiving placebo (q8h), aspirin (25 mg/kg PO q8h), or deracoxib (1.5 mg/kg QD, placebo ql2h) for 28 days. Gastroscopy on days -7, 6, 14, and 28 evaluated 4 regions of the stomach separately and visible lesions were scored. Dogs were observed every 8 hours for vomiting and diarrhea. Median total scores for each group were compared each day of endoscopic examination and total dog-days of vomiting and diarrhea were compared. Significance was determined at P < .05. RESULTS: There were significant differences in total scores of the aspirin group and both the placebo and deracoxib groups on days 6, 14, and 28. No significant differences in total scores were found between placebo and deracoxib on days 6, 14, and 28. Significant differences in dog-days of vomiting were found between the aspirin and deracoxib groups whereas no significant differences were found between the deracoxib and placebo groups. There was no detectable effect of treatment on dog-days of diarrhea. CONCLUSIONS AND CLINICAL IMPORTANCE: Administration of deracoxib to healthy dogs resulted in significantly lower gastric lesion scores, and fewer days of vomiting compared to aspirin, indicating that deracoxib is better tolerated than aspirin in some dogs.  相似文献   

12.
The safety of robenacoxib, a nonsteroidal anti-inflammatory drug with high selectivity for inhibition of the cyclooxygenase (COX)-2 isoform of COX, was investigated in the cat in two randomized, blinded, placebo-controlled, parallel-group studies. Robenacoxib was administered orally to healthy young domestic short-hair cats at dosages of 0 (placebo), 5 and 10 mg/kg once daily for 28 days (study 1) and at 0 (placebo), 2, 6 and 10 mg/kg twice daily for 42 days (study 2). The recommended minimum dosage for robenacoxib tablets in cats is 1 mg/kg once daily (range 1-2.4 mg/kg). Relative to placebo treatment, no toxicologically significant effects of robenacoxib were recorded in either study, based on general observations of health, haematological and clinical chemistry variables and urinalyses in life, and by post mortem organ weight, gross pathology and histopathology assessments. Pharmacokinetic-pharmacodynamic simulations indicated that all dosages of robenacoxib were associated with marked inhibition of COX-2 at peak effect (median I(max) 97.8-99.4% inhibition) with lesser inhibition of COX-1 (median I(max) 26.8-58.3% inhibition). Inhibition of the COXs was short lasting, with >10% median inhibition persisting for 4.0 h for COX-2 and 1.5 h for COX-1. These levels of inhibition of COX-1 and COX-2 twice daily with robenacoxib were not associated with any detectable toxicity, suggesting that, as previously described in dogs, the high safety index of robenacoxib in cats may be related to a combination of its high COX-2 selectivity and short residence time in the central compartment.  相似文献   

13.
Shampoo therapy is frequently used on pruritic dogs. However, there are few double-blinded, placebo-controlled studies of this form of therapy. This randomised, double-blinded, placebo-controlled study evaluated the efficacy of a commercial medicated shampoo (DermaTopic; Almapharm) containing chlorhexidine, lactoferrin, piroctone olamine, chitosan and essential fatty acids in 27 dogs with mild to moderate allergic pruritus without secondary skin infections. All dogs received shampoo therapy with either DermaTopic or a shampoo vehicle as placebo twice weekly for four weeks. The extent of pruritus was evaluated before the study and then on a daily basis by the owners using a visual analogue scale. Before beginning the treatment and after four weeks, the skin lesions were evaluated by an experienced clinician with a validated lesion score (Canine Atopic Dermatitis Extent and Severity Index - CADESI). The pruritus was reduced significantly by both DermaTopic and placebo. However, there was no significant difference between both groups. There was no statistically significant difference in the CADESI scores pre- and post-treatment in either group or between the two types of treatment. This study provides further evidence of the benefit of shampoo therapy for pruritic dogs.  相似文献   

14.
Abstract In this blinded randomized placebo-controlled trial, 20 dogs with atopic dermatitis (AD) were given placebo (8 dogs) or misoprostol (12 dogs) at 5 µg kg−1, orally, three times daily for 3 weeks. Administration of the active drug, but not of placebo, led to a significant decrease in lesional and pruritus scores. The median reduction from baseline of both scores was ≈30%. Misoprostol therapy did not lead to decreases of dermal cell counts or skin tumour necrosis factor (TNF)α mRNA copy numbers that were significantly different from those of placebo. Skin TNFα protein production, assessed using indirect immunofluorescence, decreased or remained unchanged in dogs receiving misoprostol. In contrast, post treatment TNFα fluorescence scores were higher in all but two dogs given placebo. The changes from baseline of TNFα fluorescence scores did not correlate significantly with those of lesional or pruritus indices. These observations confirm the modest efficacy of misoprostol for treatment of canine AD and suggest that its mild anti-allergic effects are not associated with either inhibition of inflammatory cell emigration or TNFα production.  相似文献   

15.
According to a survey, non-steroidal anti-inflammatory agents were the most popular analgesic used in South Africa for management of peri-operative pain, acute post-operative pain and chronic pain. The most popular non-steroidal anti-inflammatory agents are flunixin meglumine and phenylbutazone. The most popular opioid type drug is buprenorphine, followed by morphine. In the peri-operative setting, analgesic agents were not actively administered to 86.3% of cats and 80.7% of dogs. Analgesic premedications were frequently administered, e.g. xylazine or ketamine, but no specific drug was administered for post-operative pain. Veterinarians need to critically review their anaesthetic and analgesic practices in order to achieve balanced anaesthesia.  相似文献   

16.
OBJECTIVE: To evaluate the efficacy of epidurally administered deracoxib to mediate the signs of a sodium urate crystal-induced stifle synovitis in dogs, and to compare the efficacy of epidural versus subcutaneously administered deracoxib. STUDY DESIGN: Experimental, randomized, blinded, placebo-controlled modified cross-over design. ANIMALS: Random source, adult, mixed breed dogs (n = 24; 14 males, 10 females). METHODS: Sodium urate crystals were used to create a stifle synovitis model to evaluate the efficacy of deracoxib. Dogs were divided into 4 groups: 3 mg/kg epidural deracoxib, 1.5 mg/kg epidural deracoxib, 3 mg/kg subcutaneous deracoxib, and a placebo (vehicle for deracoxib). Force plate and subjective evaluations were made at time 0, 2, 4, 8, 12, and 24 hours post-treatment. Repeated measures ANOVA with Bonferroni-corrected post hoc comparisons was used to determine significant treatment effects. RESULTS: Peak vertical force (PVF) and vertical impulse (VI) were both significantly higher in deracoxib treated dogs compared with placebo. For 3 mg/kg epidural and subcutaneous deracoxib, PVF and VI were significantly greater than for 1.5 mg/kg epidural deracoxib. Overall pain score for all deracoxib-treated dogs was significantly lower than for placebo dogs. CONCLUSIONS: Epidural administration of deracoxib is effective at providing analgesia in an acute joint pain model; however, it does not appear to be more effective than systemic administration. CLINICAL RELEVANCE: Injectable deracoxib is effective in providing analgesia in acute inflammatory conditions of synovial joints.  相似文献   

17.
Carprofen, a non-steroidal anti-inflammatory drug (NSAID), was injected intravenously in six cows after calving, either as a single or a daily dose of 0.7 mg/kg for five days. Carprofen was well tolerated by the cows at this dose rate, the milk production and biochemical variables remaining within the normal ranges. The plasma elimination half-life of carprofen ranged from 44.5 to 64.6 h after repeated daily injections. These values are longer than those reported for other NSAIDs used in veterinary medicine, e.g. flunixin and phenylbutazone. The volume of distribution and the clearance values calculated after a single intravenous injection amounted to 0.09 l/kg and 9.0 ml/min. The concentration of carprofen in milk collected twice daily (morning and evening) was, in general, below the sensitivity limit of the analytical method (25 ng/ml) up to five days after the last carprofen injection; the concentration of carprofen reached about 30 ng/ml in only a few milk samples collected after the fourth or fifth injection. This indicates that carprofen is poorly excreted in the milk.  相似文献   

18.
19.
Sixty-three drugs, belonging to 10 chemical classes, were tested in vitro to determine effects on phagocytosis of 32P-labeled Staphylococcus aureus by neutrophils isolated from milk. Within each class, the number of antibiotics tested were: nonsteroidal anti-inflammatory drugs (NSAID; 8), peptolids (2), aminoglycosides (8), tetracyclines and fusidic acid (4), beta-lactam antibiotics (25), secretolytic agents (2), macrolides (5), polypeptides (2), and antibacterial quinolones (8). Percentage of phagocytosis was determined after incubating (2 hours at 37 C) 12.5 x 10(6) viable neutrophils, 200 x 10(6) 32P-labeled S aureus with antibiotics and 5% skimmed milk. Concentrations of antibiotics tested were 1,000, 500, and 10 micrograms/ml of incubation media. When compared with nonantibiotic controls at the highest drug concentration, the NSAID acetylsalicylic acid and centrophenoxine increased phagocytosis 23.2 and 8.8%, respectively, and benzydamine, indomethacin, phenylbutazone, ibuprofen, and acetominophen decreased phagocytosis 22.8, 14.2, 9.8, 27.0, and 18.2%, respectively. The peptolids novobiocin and pristinamycin decreased phagocytosis 24.5 and 22.0%, respectively. The aminoglycosides tobramycin, amikacin, and gentamicin decreased phagocytosis 21.1, 15.4, and 19.2%, respectively. For the tetracyclines and fusidic acid, minocycline and doxycycline decreased phagocytosis 39.8 and 54.2%, respectively. The beta-lactam antibiotics carfecillin, cephapirin sodium, and cephacetrile sodium decreased phagocytosis 11.2, 12.8, and 23.8%, respectively. The secretolytic agent, bromhexin, increased phagocytosis 10.8%. These data indicate that the potential for enhanced phagocytosis exists through use of some NSAID, and for depressed phagocytosis through use of aminoglycosides, peptolids, tetracyclines, and beta-lactams, as well as certain other NSAID.  相似文献   

20.
Strøm, H. & Krogsgaard Thomsen, M. Effects of non-steroidal anti-inflammatory drugs on canine neutrophil chemotaxis. J. vet. Pharmacol. Therap. 13, 186–191.
Non-steroidal anti-inflammatory drugs exhibit differences in their ability to suppress polymorphonuclear leucocyte (PMN) functions in different species. The present study investigated the in-vitro and ex-vivo effects of phenylbutazone and flunixin on leukotriene-B4-directed migration of canine PMN. Furthermore, in-vitro comparison was made to indomethacin and the 5-lipoxygenase inhibitor, nordihydroguaiaretic acid (NDGA). In vitro , flunixin and NDGA were the most potent inhibitors, with IC 50s of 13 and 7 μmol/l, respectively. Phenylbutazone had an IC 50 of 42 μmol/l whereas indomethacin did not achieve 50% inhibition at concentrations less than 100 μmol/l. Ex vivo , flunixin almost completely abolished the LTB4 response at 1h, and still possessed significant inhibitory activity 24 h after a dosage of 1mg/kg i.v. Phenylbutazone was less active ex vivo but did suppress chemotaxis by 23% (P<0.05) at 1h following an i.v. dose of 20mg/kg. It is suggested that part of the anti-inflammatory action of flunixin in dogs may be attributed to inhibition of PMN recruitment.
M. Krogsgaard Thomsen, Department of Pharmacology, Leo Pharmaceutical Products, DK-2750, Ballerup, Denmark.  相似文献   

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