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López-Castilla JD, Cano M, Muñoz M, Soult JA, Andrés A, Montilla M, Barrera M. Massive bronchoalveolar aspiration of barium sulfate during a radiologic study of the upper digestive tract. Pediatr Pulmonol 1997; 24:126-7. [PMID: 9292908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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77
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Torío R, Cano M, Montes A, Prieto F, Benedito J. Comparison of two methods for electrocardiographic analysis in Gallega sheep. Small Rumin Res 1997. [DOI: 10.1016/s0921-4488(96)00951-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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78
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Cano M, Heras J, Maeso M, Alvaro M, Fernández R, Pinilla E, Campo J, Monge A. 3-[4-Phenoxyphenyl]pyrazole (Hpzpp) and 3-[4-butoxyphenyl]pyrazole (Hpzbp) in rhodium chemistry crystal structures of 3-[4-phenoxyphenyl]pyrazole, and [Rh(μ-pzbp)(COD)]2. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(96)06890-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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79
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Peréz Busquier M, Calero E, Rodríguez M, Castellon Arce P, Bermudez A, Linares LF, Mesa J, Ffernandez Crisostomos C, Garcia C, Garcia Lopez A, Valenzuela A, Povedano A, Garcia Perez S, Lopez MA, Caliz R, Garcia Villalba F, Cano M, Gines Martinez F, Gonzalez J, Caracuel MA, Roldan R, Guzman Ubeda M, Gonzalez A, Marenco de la Fuente IL, Alepuz Pou M. Comparison of aceclofenac with piroxicam in the treatment of osteoarthritis. Clin Rheumatol 1997; 16:154-9. [PMID: 9093797 DOI: 10.1007/bf02247844] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A multicentre, double-blind, randomised, parallel group study was undertaken to investigate the efficacy and safety of aceclofenac (123 patients, 100 mg twice daily) in comparison to piroxicam (117 patients, 20 mg once daily and placebo once daily) in patients with osteoarthritis of the knee. The treatment period of two months was preceded by a washout period of one week duration. On completion of the study, patients in both aceclofenac and piroxicam-treated groups exhibited significant improvement in pain intensity and functional capacity of the affected knee, as represented by the Osteoarthritis Severity Index (OSI) (p < 0.0001 and p < 0.001 respectively). This was further substantiated following the patient's assessment of pain intensity using the Visual Analogue Scale (VAS), in which significant improvements were demonstrated at all time points for each treatment group (p < 0.001). Although both treatment groups showed a significant improvement in all investigator's clinical assessments (functional exploration of the knee, knee flexion and extension (EXT)), there were no significant differences between the groups. There was, however, a more rapid improvement in knee flexion in the aceclofenac group after 15 days of treatment. Both aceclofenac and piroxicam were well tolerated by patients, the most commonly reported adverse events being gastrointestinal, although their incidence was low. Only 24 patients on aceclofenac, as opposed to 33 on piroxicam complained of dyspepsia, epigastralgia and pyrosis. While 7 patients in each group were withdrawn because of adverse events, only one patient with piroxicam was withdrawn because of severe upper gastrointestinal bleeding. Twice as many reports of fecal blood loss were made in the piroxicam group in comparison to the aceclofenac group. In summary, this study confirms the therapeutic efficacy of aceclofenac and suggests that it is a well-tolerated alternative NSAID to piroxicam in the treatment of osteoarthritis.
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80
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Cano M, Campo J, Panizo M. Seven-coordinate MoSn complexes containing bidentate PP-donor ligands. Polyhedron 1997. [DOI: 10.1016/s0277-5387(96)00372-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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81
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Arnold LL, Christenson WR, Cano M, John MK, Wahle BS, Cohen SM. Tributyl Phosphate Effects on Urine and Bladder Epithelium in Male Sprague-Dawley Rats. Toxicol Sci 1997. [DOI: 10.1093/toxsci/40.2.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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82
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Calonge ML, De la Horra C, Cano M, Sánchez-Aguayo I, Ilundáin AA. Apical ouabain-sensitive K+-activated-ATPase activity in colon and caecum of the chick. Pflugers Arch 1997; 433:330-5. [PMID: 9064649 DOI: 10.1007/s004240050284] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This study sought to investigate the presence and characteristics of K+-ATPase activity in chicken intestinal epithelia. A cytochemical method revealed Na+-independent, ouabain-sensitive, K+-ATPase activity in the apical, but not in the basolateral, membrane of chicken colonic and caecal epithelial cells. K+-ATPase activity was not observed in the small intestine. The measurement of K+-activated pNPPase activity was used to characterize the K+-ATPase activity evidenced by the cytochemical method. In addition, K+ and NH4+, but neither Na+ nor Li+, could activate pNPPase activity in chicken intestinal epithelia. Vanadate abolished ouabain-sensitive, K+-activated pNPPase activity in the three membrane preparations tested, whereas oligomycin and SCH 28080 were without effect. The Km for K+ and the ouabain IC50 values for the apical colonic and caecal K+-activated pNPPase activity were higher than those measured for K+-activated pNPPase activity measured in the basolateral membrane of chicken jejunal enterocytes. The results indicate that the apical membranes of chicken colon and caecum possess Na+-independent, ouabain-sensitive K+-activated-ATPase activity.
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83
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Sanz D, Santa María M, Claramunt R, Cano M, Heras J, Campo J, Ruíz F, Pinilla E, Monge A. Regular paper. J Organomet Chem 1996. [DOI: 10.1016/s0022-328x(96)06577-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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84
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Cano M, Campo J, Heras J, Pinilla E, Monge A. Reaction of [Mo(I)2(CO)3(CH3CN)2] with the hydrotris (3, 5-dimethylpyrazol-1-yl)borate (TpMe2) ligand. Synthesis and characterization of degradation products and the X-ray structure of the oxo-pyrazole tetrametallic Mov cluster [Mo4O4(μ3-O)2(μ2-O)2(μ2-OH)2(HpzMe2)6]I2·4CH3CN. Polyhedron 1996. [DOI: 10.1016/0277-5387(95)00404-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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85
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Toti P, Balestri P, Cano M, Galluzzi P, Megha T, Farnetani MA, Palmeri ML, Vascotto M, Venturi C, Fois A. Celiac disease with cerebral calcium and silica deposits: x-ray spectroscopic findings, an autopsy study. Neurology 1996; 46:1088-92. [PMID: 8780097 DOI: 10.1212/wnl.46.4.1088] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
An increased incidence of seizures and cerebral calcifications, usually bilateral and located in the occipital cortex, has been reported in celiac patients. The histology of cerebral lesions is not well defined, and their pathogenesis is only speculative. We report the autopsy results of a patient with celiac disease, seizures, and cerebral calcifications who died following a cerebral hemorrhage caused by Fisher-Evans syndrome. Calcifications were restricted to the cortical gray matter and composed of aggregates of small calcified spicules. Calcium deposition was present as psammoma-like bodies, along small vessels, and within neurons. X-ray spectroscopy of the calcified areas revealed that calcium (43%) and silica (57%) were present in the lesions. High silica content was also found in the cerebral hemorrhagic fluid. Silica toxicity has to be considered in regard to the pathogenesis of the cerebral lesions and of the seizures.
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86
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Cohen SM, Cano M, Anderson T, Garland EM. Extensive handling of rats leads to mild urinary bladder hyperplasia. Toxicol Pathol 1996; 24:251-7. [PMID: 8992616 DOI: 10.1177/019262339602400214] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The urinary and urothelial effects of the frequent handling necessary for obtaining fresh-voided urine specimens were evaluated in 5-wk-old male F-344 rats fed control diet or diet containing 7.5% sodium saccharin. Frequent handling consisted of holding rats by the back of the neck in a position to obtain fresh-voided urine directly into centrifuge tubes 3 times per week for 10 weeks, whereas seldomly handled control rats received this treatment only twice during the entire 10 weeks. The urothelium of frequently handled rats fed control diet showed superficial necrosis and regenerative hyperplasia as observed by light and scanning electron microscopy. These changes were not observed in rats fed control diet that were seldomly handled. The necrosis and hyperplasia were not as pronounced in frequently handled rats fed control diet as in seldomly handled, sodium-saccharin-treated rats, but handling also potentiated the severity of the changes produced by sodium saccharin feeding. The urothelial exfoliation and consequent regenerative hyperplasia are likely secondary effects of stress.
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Kazakoff PW, McGuire TR, Hoie EB, Cano M, Iversen PL. An in vitro model for endothelial permeability: assessment of monolayer integrity. In Vitro Cell Dev Biol Anim 1995; 31:846-52. [PMID: 8826088 DOI: 10.1007/bf02634568] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An essential component of any in vitro model for endothelial permeability is a confluent cell monolayer. The model reported here utilizes primary human umbilical vein endothelial cells (HUVEC) cultured on recently developed polyethylene terephthalate micropore membranes. Using a modification of the Wright-Giemsa stain, confluent HUVEC monolayers grown on micropore membranes were routinely assessed using light microscopy. Determination of confluence using this method was confirmed by scanning electron microscopy. Transendothelial electrical resistance of HUVEC monolayers averaged 27.9 +/- 11.4 omega.cm2, 10 to 21% higher than literature values. Studies characterizing the permeability of the endothelial cell monolayer to 3H-inulin demonstrated a linear relationship between the luminal concentration of 3H-inulin and its flux across HUVEC monolayers. The slope of the flux versus concentration plot, which represents endothelial clearance of 3H-inulin, was 2.01 +/- 0.076 x 10(-4) ml/min (r2 = .9957). The permeability coefficient for the HUVEC monolayer-micropore membrane barrier was 3.17 +/- 0.427 x 10(-6) cm/s with a calculated permeability coefficient of the HUVEC monolayer alone of 4.07 +/- 0.617 x 10(-6) cm/s. The HUVEC monolayer reduced the permeability of the micropore membrane alone to 3H-inulin (1.43 +/- 0.445 x 10(-5) cm/s) by 78%. Evans blue dye-labeled bovine serum albumin could not be detected on the abluminal side without disruption of the HUVEC monolayer. These results demonstrate a model for endothelial permeability that can be extensively assessed for monolayer integrity by direct visualization, transendothelial electrical resistance, and the permeability of indicator macromolecules.
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88
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Cohen SM, Garland EM, Cano M, St John MK, Khachab M, Wehner JM, Arnold LL. Effects of sodium ascorbate, sodium saccharin and ammonium chloride on the male rat urinary bladder. Carcinogenesis 1995; 16:2743-50. [PMID: 7586194 DOI: 10.1093/carcin/16.11.2743] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Sodium saccharin administered at high doses to male rats beginning after 5 weeks of age produces mild urothelial hyperplasia but does not result in a significant increase in incidence of bladder cancer unless it is administered after an initiating agent. However, if it is administered in a two-generation bioassay, a significant incidence of bladder tumors is produced. The hyperplastic and tumorigenic effects are inhibited by co-administration with high doses of NH4Cl. The present experiment was designed to evaluate the effects of another sodium salt, sodium ascorbate, administered through the neonatal time period. Sodium saccharin administered as 5% of the diet produced urothelial hyperplasia and increased labeling index, and this was inhibited by co-administration with 1.23% NH4Cl. Four doses of sodium ascorbate was evaluated. The lowest dose, 0.91%, was without effect on the urinary tract. A slight effect (not statistically significant) was observed at a dose of 2.73%, and a significant proliferative response was detected at 4.56 and 6.84%. Recent studies suggest that a calcium phosphate-containing amorphous precipitate forms in the urine of rats fed high doses of sodium saccharin, producing cytotoxicity of the urothelium and consequent regenerative hyperplasia. This precipitate was observed in the present experiment in the rats administered the high dose of sodium saccharin or the higher doses of sodium ascorbate. Formation of this precipitate and induction of urothelial proliferation were inhibited by co-administration of NH4Cl, but somewhat higher doses of ammonium chloride were required for doses of sodium ascorbate compared to sodium saccharin. These results demonstrate that sodium ascorbate administered through the neonatal time period of the male rat produces urothelial hyperplasia in the dose responsive manner, with a no-effect level of 0.91% of the diet. The formation of the calcium phosphate-containing amorphous precipitate and urothelial proliferation were inhibited by co-administration with NH4Cl.
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Takahashi T, Moyer MP, Cano M, Wang QJ, Adrian TE, Mountjoy CP, Sanger W, Sugiura H, Katoh H, Pour PM. Establishment and characterization of a new, spontaneously immortalized, pancreatic ductal cell line from the Syrian golden hamster. Cell Tissue Res 1995; 282:163-74. [PMID: 8581919 DOI: 10.1007/bf00319143] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Spontaneously immortal pancreatic cell lines are not available. By use of a defined culture medium, such a line (TAKA-1) was established from the Syrian golden hamster. Cytological, cytogenetic, molecular biological, enzymatic and receptor patterns as well as antigenicity were studied and were compared with those of the normal hamster pancreatic ductal cells in vivo. TAKA-1 cells grew exponentially in a monolayer on collagen gel in a defined medium but did not proliferate in soft agar. Ultrastructurally, the cells closely resembled the normal hamster pancreatic ductal cells. Similarities and dissimilarities were found between the normal ductal cells and TAKA-1 cells. Similarities included the presence of cytokeratin, carbonic anhydrase and some tumor-associated antigens. However, unlike the normal ductal cells, TAKA-1 cells expressed blood group A antigen and anti-vimentin, showed affinity to selected lectins, and an abnormality of chromosome 3, which is suggested to be associated with immortality. Moreover, unlike the hamster pancreatic ductal cancer cells but like the normal hamster pancreatic ductal cells, TAKA-1 cells did not have a c-Ki-ras mutation. EGF, TGF-alpha and secretin, but not CCK or GRP, bound to the TAKA-1 cells. TAKA-1 cells produced TGF-alpha, and their growth was stimulated by exogenous EGF in serum-free medium. This cell line presents a suitable model for biologic and pathologic study of the hamster pancreatic ductal cells in vitro.
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90
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Nunes GL, Centemero MP, Feres F, Pinto IM, Chaves A, Mattos LA, Tanajura LF, Maldonado G, Cano M, Sousa AG. [Coronary angioplasty in patients with restenosis. Characterization of clinical and angiographic profiles, hospital clinical course, and implications for the selection of patients]. Arq Bras Cardiol 1995; 65:215-9. [PMID: 8579507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
PURPOSE To define the clinical and angiographic profile of patients undergoing to a 2nd or a 3rd coronary angioplaty (PTCA) for the treatment of restenosis, and assess the safety and efficacy of redilatation. METHODS Patients submitted to PTCA for a 1st (1stRE) or a 2nd (2ndRE) restenosis, from Jan/1980 through Dec/1993, were retrospectively identified, and compared to those undergoing to PTCA for de novo lesions (DN). RESULTS A total of 5,736 underwent to dilatation of primary lesions, 610 of a 1stRE, and 64 of a 2ndRE. Patients with restenotic lesions had a higher prevalence of diabetes, smoking, history of prior infarction (1stRE e 2ndRE) and hyperlipidemia (2ndRE) as compared with primary lesions (p < 0.05). Besides patients with a 2ndRE had a higher incidence of left ventricular dysfunction, as compared to those with DN or a 1stRE (31.3% with EF < 45% in group 2ndRE, vs 19.8% and 23.1% in groups 1stRE and DN, respectively, p < 0.05). Primary success, infarct rate and mortality were similar in all groups, but emergency bypass surgery was significantly higher in the DN (2.1% vs 0.8% in 1stRE and 0% in 2ndRE, p < 0.05). CONCLUSION Restenosis can be effectively treated by redilatation. Patients with clinical and angiographic features predisposing to further recurrence can be better treated with other interventions (i.e., coronary stents, bypass surgery).
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91
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Santiago D, Cano M, Reja A, Sánchez-Garcia A, Garcia-Fernández A. Lead, cadmium and copper contamination in wild animal in sierra morena, andalucia (Spain). Toxicol Lett 1995. [DOI: 10.1016/0378-4274(95)94924-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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92
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Porcel JM, Vives M, Cano M, Rubio-Caballero M. [Do 5HT-3 receptor antagonists ameliorate cholestatic pruritus?]. ANALES DE MEDICINA INTERNA (MADRID, SPAIN : 1984) 1995; 12:411. [PMID: 8924539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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93
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Pérez A, Perella M, Pastor E, Cano M, Escudero J. Myasthenia gravis induced by alpha-interferon therapy. Am J Hematol 1995; 49:365-6. [PMID: 7639296 DOI: 10.1002/ajh.2830490432] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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94
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Peral MJ, Cano M, Ilundáin AA. K(+)-H+ exchange activity in brush-border membrane vesicles isolated from chick small intestine. EUROPEAN JOURNAL OF BIOCHEMISTRY 1995; 231:682-6. [PMID: 7649168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The purpose of this study was to investigate the presence of a K(+)-H+ exchanger in brush-border membrane vesicles (BBMV) isolated from chick small intestine. 86Rb+, as a tracer for K+ transport, was used to probe for the exchange mechanism. An outwardly directed proton gradient (pH 5.5 inside, pH 7.5 outside) stimulated 86Rb+ uptake into voltage-clamped BBMV. H(+)-driven 86Rb+ uptake was only weakly inhibited by 5-(N-ethyl-N-isopropyl)amiloride, whereas this agent strongly inhibited H(+)-driven Na+ uptake. At initial rates, proton-driven 86Rb+ uptake was significantly reduced by external K+ but it was not significantly affected by external Na+. Conversely, extravesicular Na+ inhibited proton-driven Na+ uptake, whilst K+ had little effect. H(+)-driven K+ uptake tended to saturate with increasing external K+ concentrations and Lineweaver-Burk analysis of the data revealed a Km for external K+ of 2 mM. These findings are consistent with the presence of K(+)-H+ exchange activity in the chicken jejunal brush-border membrane.
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95
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Holmäng S, Cano M, Grenabo L, Hedelin H, Johansson SL. Effect of indomethacin on N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide-induced urinary tract carcinogenesis. Carcinogenesis 1995; 16:1493-8. [PMID: 7614682 DOI: 10.1093/carcin/16.7.1493] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The effects of indomethacin on the urinary bladder and renal pelvis in rats treated with N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide (FANFT) were studied. Two hundred female Sprague-Dawley rats were divided into four groups. Group 1 received control diet without added chemicals. Group 2 was treated with indomethacin (1 mg/kg per day) in the drinking water throughout the experiment. Groups 3 and 4 received 0.2% FANFT in the diet for seven weeks followed by control diet. In addition to FANFT, Group 4 received indomethacin, 1 mg/kg per day, for the entire experiment. The rats were sacrificed after 92 weeks. There were no urothelial tumors in the control group, one renal pelvic tumor in the indomethacin group, 4 tumors in the FANFT group and 10 urothelial tumors in the FANFT + indomethacin group. The difference between Groups 3 and 4 was statistically significant (P < 0.05). Moderate and severe hyperplasia of the renal pelvic and papillary epithelium was found in 15 of 48 rats in Group 2 (indomethacin only) as compared with 6 of 49 control rats (P < 0.05). Moderate and severe hyperplasia was equally frequent in Groups 3 and 4 (14 and 17 animals in each group, respectively). Twenty-four rats in Group 2 had mammary tumors as compared to 12 animals in Group 1 (P < 0.01). Five of the tumors in Group 2 were adenocarcinomas. There was no difference between the number of mammary tumors in Groups 3 and 4 (36 and 32 animals in each group, respectively). The results suggest that indomethacin enhances FANFT-induced urinary tract carcinogenesis. Indomethacin also seems to exert some tumorigenic activity in the mammary gland.
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96
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Domínguez JC, Nieto P, Guerra F, Beltrán C, Molina T, Hidalgo ML, Martín E, Martínez MC, Cano M. [Use of ticlopidine in primary care]. Aten Primaria 1995; 16:137-40. [PMID: 7647207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
OBJECTIVES To find the reasons for prescription of Ticlopidine, which acts against the aggregation of platelets and is catalogued as "with hospital diagnosis", and to evaluate the criteria for its correct use and whether it is actually used in Spain to treat authorised symptoms. DESIGN A descriptive, crossover and retrospective study. SETTING Primary Care districts in the catchment area of the Virgen del Rocío hospital in Sevilla. PATIENTS Those who requested permits for Ticlopidine prescriptions, documented by the clinical report. MEASUREMENTS AND MAIN RESULTS The following data were recorded from the clinical reports presented when the Ticlopidine prescription permits were requested: patient's identification, diagnosis, pharmaceutical speciality, dosage, length of treatment and recommendation of haematological check-ups. Out of 407 reports available, the diagnosis corresponded to one of the authorised symptoms in 50.6% of cases. In a third of the patients the recommended dose was half that endorsed by the published clinical trials. Only in 2.7% of cases was mention made of the desirability of having haematological check-ups to forestall possible adverse reactions. The possibility of a counter-indication to Acetylsalicylic acid was only rarely mentioned. CONCLUSIONS Ticlopidine is recommended in 50% of cases for symptoms for which it is not authorised in our country: moreover, in 35% of cases, at doses lower than those established as effective. The information given by the doctor who initiates the treatment is usually insufficient. There is a need to reassess whether cataloguing a medicine as "with hospital diagnosis" aids its rational use.
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Ferrero MI, Cano M, Ilundáin A. Na(+)-H(+) exchange activity in brush-border membrane vesicles isolated from chick small intestine. BIOCHIMICA ET BIOPHYSICA ACTA 1995; 1235:313-6. [PMID: 7756340 DOI: 10.1016/0005-2736(95)80019-c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This study was undertaken to investigate the presence of a Na(+)-H(+) antiporter in brush-border membrane vesicles (BBMV) isolated from chick small intestine. An outwardly directed proton gradient (pH 5.5 inside, 7.5 outside) stimulated Na+ uptake into BBMV and resulted in a transient accumulation. No accumulation was observed in the absence of a proton gradient. Voltage clamping the membrane with K+ and valinomycin decreased the Na+ overshoot. Amiloride inhibited pH gradient-driven Na+ uptake in a dose-dependent manner with an IC50 of 44 microM. The relationship between pH gradient-driven Na+ uptake and external Na+ concentration followed simple, saturating Michaelis-Menten kinetics. Eadie-Hofstee analysis of the pH gradient-driven Na+ uptake indicated a single transport system with a Vmax of 33 nmol/mg protein per 15 s and a Km for Na+ of 12 mM. The initial rate of pH-driven Na+ uptake increased as the intravesicular pH decreased, with a Hill coefficient close to 1. These findings indicate that BBMV isolated from chicken small intestine possess a Na(+)-H(+) exchanger. This exchanger does not appear to be the one involved in cell pH regulation.
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98
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Takahashi T, Moyer MP, Cano M, Wang QJ, Mountjoy CP, Sanger W, Adrian TE, Sugiura H, Katoh H, Pour PM. Differences in molecular biological, biological and growth characteristics between the immortal and malignant hamster pancreatic cells. Carcinogenesis 1995; 16:931-9. [PMID: 7728976 DOI: 10.1093/carcin/16.4.931] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We compared morphological, biological and molecular biological patterns of a newly established, spontaneously immortalized pancreatic ductal cell line, TAKA-1, with a hamster pancreatic ductal adenocarcinoma cell line, PC-1. PC-1 cells grew in a monolayer on plastic tissue culture flasks, whereas TAKA-1 cells required type I collagen gel matrix to propagate. The growth rate and argyrophilic nuclear organizer region (Ag-NOR) counts were greater in PC-1 cells than in TAKA-1 cells. More TAKA-1 cells were in G0/G1 and less were in the S cell cycle phase than PC-1 cells. Karyotypically, the consistent change in TAKA-1 cells was an abnormal no. 3 chromosome, whereas additional chromosomal abnormalities were found in PC-1 cells. Ultrastructurally, TAKA-1 cells formed ductal structures and were composed of two types of cells, as in the normal hamster pancreatic ducts, whereas PC-1 cells were pleomorphic, showed evidence for loss of differentiation and contained intracytoplasmic lumens. Unlike the PC-1, TAKA-1 cells did not show a point mutation at codon 12 in the c-Ki-ras oncogene and did not grow in soft agar. Receptor binding assay showed specific epidermal growth factor binding to both cell lines, but secretin binding only to TAKA-1 cells. Both cells produced and released transforming growth factor-alpha in serum-free medium. Both cell lines expressed blood group A antigen, carbonic anhydrase, coexpressed cytokeratin and vimentin, and reacted with tomato and Phaseolus vulgaris leucoagglutinin (L-PHA) lectins. The results demonstrate that chromosomal abnormalities, cell cycle patterns, expression of cytokeratin 18, lectin bindings and the c-Ki-ras mutation are the features that distinguish the benign from the malignant pancreatic ductal cells in Syrian hamster.
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Cohen SM, Cano M, St John MK, Garland EM, Khachab M, Ellwein LB. Effect of sodium saccharin on the neonatal rat bladder. SCANNING MICROSCOPY 1995; 9:137-47; discussion 148. [PMID: 8553012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In a two-generation bioassay, high doses of dietary sodium saccharin (NaSac) produce bladder carcinoma in rats, whereas acid saccharin (HSac) does not effect the urothelium. NaSac and HSac administered as 5% of the diet to F0 Sprague-Dawley (SD) and F344 rats, continued through to the weaned male rats for ten additional weeks. Control 3H-thymidine labeling index (LI) was high prior to and at birth (approximately 11%), declining rapidly by weaning (to < 0.2). Neither NaSac nor HSac increased proliferation through 7 days of age. NaSac increased the proliferation rate at later times, whereas HSac did not. The LI decreased to control levels in NaSac-fed rats switched to control diet after weaning and increased in control-fed rats switched to NaSac after birth or weaning. In a second experiment, 5% NaSac did not affect urothelial morphology of SD rats through 7 days. By 21 days post-birth, urothelial hyperplasia occurred in NaSac-fed rat. The LI in treated versus control was similar through gestation, with a slight difference by 7 days. LI was significantly different by 21 days post-birth, but was similar between males and females. These results provide additional evidence for the increased cell proliferative effects of NaSac during the neonatal period, but not during gestation.
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Cohen SM, Cano M, Garland EM, St John M, Arnold LL. Urinary and urothelial effects of sodium salts in male rats. Carcinogenesis 1995; 16:343-8. [PMID: 7859367 DOI: 10.1093/carcin/16.2.343] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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