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Sánchez-Bueno F, Acosta F, Ramirez P, Robles R, Rodriguez JM, Munitiz V, Rios A, Parrilla P. Incidence and survival rate of hepatic retransplantation in a series of 300 orthotopic liver transplants. Transplant Proc 2000; 32:2671-2. [PMID: 11134756 DOI: 10.1016/s0041-1345(00)01836-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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77
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Munitiz V, Illana J, Sola J, Piñero A, Rios A, Parrilla P. A case of breast cancer associated with juvenile papillomatosis of the male breast. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2000; 26:715-6. [PMID: 11078621 DOI: 10.1053/ejso.2000.0988] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Juvenile papillomatosis of the breast (JPB) was first described in 1980 and is occasionally associated with breast cancer. The literature reports only four cases of JPB in males; none of them associated simultaneously with breast cancer. We present a case of a male with JPB associated with a ductal carcinoma in the same gland.
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Ramirez P, Chavez R, Majado M, Munitiz V, Muñoz A, Hernandez Q, Palenciano C, Pino-Chavez G, Loba M, Minguela A, Yelamos J, Vizcaino AS, Asensi H, Cayuela MG, Segura B, Marin F, Rubio A, Rios A, Fuente T, Robles R, Sanchez F, Sansano T, Acosta F, Rodriguez JM, Navarro F, Cabezuelo J. The porcine liver supports metabolic homeostasis in the nonhuman primate: experimental study in a model of orthotopic liver transplantation from h-DAF transgenic pig to baboon. Transplant Proc 2000; 32:1112-3. [PMID: 10936385 DOI: 10.1016/s0041-1345(00)01150-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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79
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Sánchez-Mendoza A, López-Sánchez P, Vázquez-Cruz B, Rios A, Martínez-Ayala S, Escalante B. Angiotensin II modulates ion transport in rat proximal tubules through CYP metabolites. Biochem Biophys Res Commun 2000; 272:423-30. [PMID: 10833430 DOI: 10.1006/bbrc.2000.2807] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To assess the effect of angiotensin II on ion transport in rat isolated proximal tubules and establish the arachidonic acid cytochrome P450 metabolites' role mediating angiotensin II effect and to analyze whether corticosteroids play a role modulating this effect, we studied the effect of low (10 and 100 pM) and high (0.1-1 microM) angiotensin II concentrations on proximal tubule ion transport, measured as (86)Rb uptake. Low angiotensin II produced a stimulation on the (86)Rb uptake (195.79 +/- 35, 377.9 +/- 81, and 300 +/- 49 pg (86)Rb/microg protein/2 min, for control and 10 and 100 pM angiotensin II, respectively). High angiotensin II concentration inhibited ion transport (0.1 microM, 57.9 +/- 5 and 1 microM, 47.3 +/- 4 pg (86)Rb/microg protein/2 min), this effect was prevented by 17-ODYA and by losartan, while indomethacin had no effect. Dexamethasone treatment increased angiotensin II-induced (86)Rb uptake inhibition and arachidonic acid metabolism (19-, 20-HETE and 12-HETE), while adrenalectomy partly prevented angiotensin II-induced inhibition and decreased cytochrome P450-dependent arachidonic acid metabolism. In conclusion, high doses of angiotensin II produce inhibition of ion transport in rat isolated proximal tubules; this effect is mediated by AT(1) receptors, involves cytochrome P450-dependent arachidonic acid metabolites, and is upregulated by corticosteroids.
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Hernández-Ramírez VI, Anaya-Ruiz M, Rios A, Talamás-Rohana P. Entamoeba histolytica: tyrosine kinase activity induced by fibronectin through the beta1-integrin-like molecule. Exp Parasitol 2000; 95:85-95. [PMID: 10910709 DOI: 10.1006/expr.2000.4522] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Previously, we characterized a 140-kDa protein from Entamoeba histolytica as a beta1-integrin-like molecule that binds fibronectin. In this work we present data showing that the amoebic receptor is associated with another surface molecule, the 220-kDa lectin, and with protein tyrosine kinase activity. By immunoprecipitation with the alphabeta1Eh antibody, we demonstrated by immune complex assays for tyrosine protein kinases that the amoebic fibronectin receptor was associated with two phosphorylated proteins of 50 and 70 kDa when internal membranes were used as the source of antigen. When cells were stimulated with fibronectin, two proteins of 55 and 90 kDa were tyrosine phosphorylated, as shown by Western blot with alphaPY20, its phosphorylation being time dependent after fibronectin stimulation. However, when the actin cytoskeleton of fibronectin-stimulated trophozoites was stabilized with phalloidin, the level and the pattern of phosphorylated proteins were different. In this case, a high-molecular-weight component, heavily phosphorylated, was present, which may include the 220-kDa lectin. We also present data confirming that the signaling pathway that is activated by fibronectin is specific. This was demonstrated by comparing the pattern of phosphoproteins obtained in immune complexes prepared with alphabeta1Eh, alphaL220, and alphaPY20 from total extracts obtained in the presence of phalloidin, from cells that had been exposed to fibronectin, soluble concanavalin A, or concanavalin-A-coated substrate. The presence of tyrosine kinases associated with the beta1-integrin-like amoebic molecule was confirmed by immunoprecipitation assays along with the combined use of a tyrosine kinase-specific substrate, the peptide RR-SRC, and a tyrosine kinase inhibitor, genistein.
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Ramírez P, De Mingo P, Andreu F, Munar M, Hernández Q, Munitiz V, Rios A, Pons JA, Miras M, Robles R, Sánchez-Bueno F, Parrilla P. Long-term results of liver transplantation in four siblings from the same family with familial amyloidotic polyneuropathy type I TTR ALA-71. Transplant Proc 1999; 31:2489-90. [PMID: 10500684 DOI: 10.1016/s0041-1345(99)00431-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Amigo ML, del Cañizo MC, Rios A, Garcia MA, Caballero MD, Martin A, Bermejo N, Vilches P, San Miguel JF. Diagnosis of secondary myelodysplastic syndromes (MDS) following autologous transplantation should not be based only on morphological criteria used for diagnosis of de novo MDS. Bone Marrow Transplant 1999; 23:997-1002. [PMID: 10373064 DOI: 10.1038/sj.bmt.1701757] [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: 11/09/2022]
Abstract
Secondary myelodysplastic syndromes (MDS) are increasingly being reported after autologous transplantation. Transient dysplastic changes have also been observed after this type of treatment. However, to the best of our knowledge no systematic morphological analysis has been performed to determine the influence of stem cell transplantation on bone marrow morphology. In 53 patients undergoing autologous transplantation, we evaluated the bone marrow, before and 6 and 12 months after the transplant, in order to analyze the appearance of dyshemopoietic changes, assessed according to a pre-established score. We also studied 25 bone marrow samples obtained at the time of diagnosis, prior to treatment, but we did not find morphological atypia. Six months after transplant, cellularity and thrombopoiesis had decreased in 38% and 49% of patients respectively, although 1 year after the process they were normal in most cases. Myelodysplasia was already present in bone marrow before transplantation and continued to be in evidence for a long time afterwards. This suggests that chemotherapy and radiotherapy used prior to transplantation are responsible for dysplastic changes. The myeloid line was the most affected with 100% of patients showing dysgranulopoiesis 1 year after autografting. Cytopenias were observed in 51% and 44% of patients 6 and 12 months after transplantation. Moreover, concomitant presence of cytopenia and myelodysplasia was observed in 37.7% of patients at 6 months after transplantation and 25% at 12 months, and therefore they could be diagnosed with MDS. These data contrast with the incidence of secondary MDS reported in earlier publications. According to these findings, the value of the French-American-British Co-operative Group criteria for the diagnosis of MDS following autologous transplantation is questionable. Moreover, since dyshemopoietic features are almost always present after autologous transplant, morphological criteria are not useful for early recognition of patients with secondary MDS after transplantation.
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Mardones C, Vizioli N, Carducci C, Rios A, Valcárcel M. Separation and determination of carnitine and acyl-carnitines by capillary electrophoresis with indirect UV detection. Anal Chim Acta 1999. [DOI: 10.1016/s0003-2670(98)00790-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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84
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Bennet L, Peebles DM, Edwards AD, Rios A, Hanson MA. The cerebral hemodynamic response to asphyxia and hypoxia in the near-term fetal sheep as measured by near infrared spectroscopy. Pediatr Res 1998; 44:951-7. [PMID: 9853934 DOI: 10.1203/00006450-199812000-00022] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This study examined the hypothesis that the cerebrovascular response to asphyxia of the late gestation sheep fetus is characterized by an increase in cerebrovascular resistance and a fall in cerebral blood flow (CBF) rather than the fall in resistance and increase in CBF which occurs in acute hypoxemia. In eight unanesthetized late gestation fetal sheep (123- to 125-d gestation) we evaluated continuous changes in carotid blood flow (CaBF) as an index of global CBF and total cerebral Hb concentrations as an index of global cerebral blood volume (CBV) using ultrasound flow probes and near infrared spectroscopy respectively. Asphyxia was induced by rapid and complete occlusion of the umbilical cord for 10 min. We also examined the fetal response to 1 h of acute 9% isocapnic hypoxia for comparison purposes. During hypoxia we observed a sustained increase in CaBF (p < 0.05) and CBV (p < 0.01) and a fall in carotid vascular resistance (p < 0.05). During asphyxia there was no significant rise in CBV, a fall in CaBF (p < 0.05), and a rise in carotid vascular resistance (p < 0.01). CaBF fell at a time when mean arterial pressure was elevated (p < 0.01). These data strongly suggest that fetal CBF does not increase and may even fall during severe asphyxia of rapid onset. Furthermore, our near infrared spectroscopy data show that the relative changes in total cerebral Hb concentrations may reflect the type and severity of the insult to which the fetus is exposed.
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Gonzalez-Martin A, Garcia-Lopez JL, Crespo C, Lastra E, Pedraza M, Rios A, Moyano A, Garrido P. A phase II study of a modified cisplatin and gemcitabine regimen in advanced non-small cell lung cancer (NSCLC): preliminary results. Lung Cancer 1998. [DOI: 10.1016/s0169-5002(98)90118-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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86
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Stewart S, Jablonowski H, Goebel FD, Arasteh K, Spittle M, Rios A, Aboulafia D, Galleshaw J, Dezube BJ. Randomized comparative trial of pegylated liposomal doxorubicin versus bleomycin and vincristine in the treatment of AIDS-related Kaposi's sarcoma. International Pegylated Liposomal Doxorubicin Study Group. J Clin Oncol 1998; 16:683-91. [PMID: 9469358 DOI: 10.1200/jco.1998.16.2.683] [Citation(s) in RCA: 259] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Cytotoxic chemotherapy is frequently required for the more severe manifestations of human immunodeficiency virus (HIV)-related Kaposi's sarcoma. Combinations of bleomycin and vincristine (BV) or BV with the addition of doxorubicin (ABV) are the most commonly used regimens against which new treatments may be compared. We report a multicenter phase III study that compared pegylated liposomal doxorubicin (PLD) to the BV combination. PATIENTS AND METHODS We conducted a randomized study that compared PLD 20 mg/m2 with a combination of bleomycin 15 IU/m2 and vincristine 2 mg in 241 patients with HIV-related Kaposi's sarcoma. Both regimens were administered by intravenous infusion every 3 weeks for six cycles. RESULTS A total of 121 patients received PLD and 120 patients the BV combination. The response to PLD was superior to BV: 58.7% versus 23.3% (P < .001). Patients who were randomized to receive BV, however, were more likely to terminate treatment early because of an adverse event (26.7% v 10.7%), and fewer completed the full six cycles of treatment (30.8% v 55.4%). Treatment with BV was associated with a significantly higher incidence of peripheral neuropathy (P < .001), whereas PLD treatment was more commonly associated with neutropenia and delays in receiving treatment (P < or = .001). CONCLUSION Pegylated liposomal doxorubicin is an effective treatment for HIV-related Kaposi's sarcoma with a higher response rate than the BV combination. It is well tolerated but more myelosuppressive.
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87
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Arce L, Teresa Tena M, Rios A, Valcárcel M. Determination of trans-resveratrol and other polyphenols in wines by a continuous flow sample clean-up system followed by capillary electrophoresis separation. Anal Chim Acta 1998. [DOI: 10.1016/s0003-2670(97)00668-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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88
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Escribano L, Orfao A, Villarrubia J, Díaz-Agustín B, Cerveró C, Rios A, Velasco JL, Ciudad J, Navarro JL, San Miguel JF. Immunophenotypic characterization of human bone marrow mast cells. A flow cytometric study of normal and pathological bone marrow samples. Anal Cell Pathol 1998; 16:151-9. [PMID: 9699944 PMCID: PMC4612272 DOI: 10.1155/1998/341340] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The goal of the present paper was to define the immunophenotype of bone marrow mast cells (BMMC) from healthy controls and patients with hematologic malignancies (HM) based on the use of multiple stainings with monoclonal antibodies analyzed by flow cytometry. Our results show that BMMC from both groups of individuals display a similar but heterogeneous immunophenotype. The overall numbers of BMMC are higher in the HM group of individuals (p = 0.08). Three patterns of antigen expression were detected: (1) markers constantly positive in all cases analyzed (CD9, CD29, CD33, CD43, CD44, CD49d, CD49e, CD51, CD71, CD117, and Fc(epsilon)RI), (2) antigens that were constantly negative (CD1a, CD2, CD3, CD5, CD6, CD11a, CD14, CD15, CD16, CD19, CD20, CD21, CD23, CD25, CD30, CD34, CD38, CD41a, CD42b, CD65, CD66b, HLA-DR, and CD138), and (3) markers that were positive in a variable proportion of cases--CD11b (50%), CD11c (77%), CD13 (40%), CD18 (20%), CD22 (68%), CD35 (27%), CD40 (67%), CD54 (88%) and CD61 (40%). In addition, BMMC from all cases explored were CD45+, and this antigen was expressed at an intensity similar to that of mature granulocytes. In summary, our results show that BMMC from both healthy controls and HM patients display a relatively heterogeneous immunophenotype. Interestingly, we have observed clear differences between the immunophenotype of BMMC and MC from other tissues. This could be due either to the heterogeneity of human MC according to their tissue localization or to the sensitivity of the method used for antigen detection.
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89
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Rios A, Brion LP, Fleischman AR. Factors affecting humidity of inspired gas in a neonatal lung model. J Perinatol 1998; 18:31-7. [PMID: 9527942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The American National Standards Institute recommends an absolute humidity of > or = 30 mg/L of inspired gas in patients receiving mechanical ventilation. This study was designed to assess the absolute humidity of inspired gas in relation to humidifier settings and environmental conditions in a test lung. STUDY DESIGN Measurements were obtained at the endotracheal tube manifold of an artificial lung in an isolette or radiant warmer with use of a nonheated wired system and two different ventilator circuit lengths. Temperature and relative humidity were measured at three environmental temperatures and various humidifier settings. RESULTS We achieved adequate absolute humidity levels only at near maximum humidifier settings. When the artificial lung was placed in an isolette with a standard circuit length inside the isolette, adequate absolute humidity was never reached at an environmental temperature of 30 degrees C. Increasing the length of the ventilator circuit situated inside the isolette or using a radiant warmer improved absolute humidity compared with that obtained with use of a standard circuit length. CONCLUSION Recommended absolute humidity levels may not be reached at the manifold even at high humidifier settings. Thus actual measurements of relative humidity and temperature at the endotracheal tube site are necessary to optimize humidity according to American National Standards Institute recommendations.
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Rios A, Silber E, Lieb D, Bavishi N, Varga P, Burton B, Clark W, Denes P. Heterogeneous response in the aortic root elastic properties to long term β-blockade in patients with the Marfan syndrome. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(98)80783-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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91
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Tena MT, Rios A, Valcárcel M, Sánchez-Alarcón M. Supercritical fluid extraction of organophosphorus pesticides from organge samples: Effect of solid additives on recovery. Chromatographia 1997. [DOI: 10.1007/bf02496371] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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92
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Arce L, Rios A, Valcárcel M. Selective and rapid determination of biogenic amines by capillary zone electrophoresis. Chromatographia 1997. [DOI: 10.1007/bf02495329] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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93
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Ortega MA, Torres MI, Fernández MI, Rios A, Sánchez-Pozo A, Gil A. Hepatotoxic agent thioacetamide induces biochemical and histological alterations in rat small intestine. Dig Dis Sci 1997; 42:1715-23. [PMID: 9286239 DOI: 10.1023/a:1018817600238] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We have assessed the effect of the oral ingestion of thioacetamide on small intestine structure and function. Thioacetamide-treated rats showed diminished mucosa weight; protein, DNA, and RNA content; and leucine aminopeptidase activity as compared to controls in both jejunum and ileum. In the jejunum, there was a reduction in the activities of alkaline phosphatase, ATPase, glucose-6-phosphatase, and myeloperoxidase, whereas in the ileum, maltase, lactase, and gamma-glutamyltranspeptidase were reduced. In both jejunum and ileum we found enlarged intercellular spaces, dark epithelial enterocytes, and lymphocyte infiltration. Enterocytes showed lobulated nuclei, deranged mitochondria with loss of their cristae, dilated rough endoplasmic reticulum containing dense material, and vesiculation of the smooth endoplasmic reticulum and the Golgi apparatus. Smooth muscle cells of the intestine exhibited ultrastructural alterations. These findings indicate that chronic oral intake of thioacetamide mimics not only hepatic alterations but also small intestine alterations normally associated with human cirrhosis.
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Torres MI, Fernandez MI, Gil A, Rios A. Effect of dietary nucleotides on degree of fibrosis and steatosis induced by oral intake of thioacetamide. Dig Dis Sci 1997; 42:1322-8. [PMID: 9201102 DOI: 10.1023/a:1018882913983] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The administration of thioacetamide in rats induces nodular cirrhosis of the liver, characterized by fibrous septae, parenchymal nodules, proliferation of the bile ducts, and excessive deposition of connective tissue elements. Nodular cirrhosis is also associated with changes in lipid metabolism, as shown by the accumulation of lipid droplets in the hepatocyte cytoplasm. Adequate nutritional support during cirrhosis is important to sustain liver function and promote recovery after the lesions have been induced. Supplementation with nucleotides may increase cellular proliferation and thus optimize hepatic recovery. The aim of this study was to investigate the effects of dietary nucleotide supplementation on the degree of fibrosis and steatosis in rats with liver cirrhosis induced by four months of oral intake of thioacetamide. The use of dietary nucleotides after thioacetamide administration was found to decrease the percentage area of fibrous septae. In animals with liver cirrhosis fed the nucleotide-supplemented diet for two weeks, the total area of fibrosis was reduced. Withdrawal of the hepatotoxic agent led to a decrease in the degree of steatosis in cirrhotic animals, which was significant in rats given the nucleotide-supplemented diet during a two-week recovery period. In conclusion, dietary nucleotides may be an important factor in the histological recovery of damaged liver in experimental cirrhosis.
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Escribano L, Orfao A, Villarrubia J, Martín F, Madruga JI, Cuevas M, Velasco JL, Rios A, San Miguel JF. Sequential immunophenotypic analysis of mast cells in a case of systemic mast cell disease evolving to a mast cell leukemia. CYTOMETRY 1997; 30:98-102. [PMID: 9149916 DOI: 10.1002/(sici)1097-0320(19970415)30:2<98::aid-cyto4>3.0.co;2-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The immunophenotypic characteristics of both bone marrow (BM) and peripheral blood (PB) mast cells (MC), from a patient suffering from an aggressive systemic mast cell disease (SMCD), were sequentially analyzed by flow cytometry using direct immunofluorescence. Analysis was carried out at diagnosis, during clinical response induced by interferon alfa-2h/prednisone therapy, and later at relapse. Our results show that together with the CD117 and IgE characteristic markers, at diagnosis BM MC showed strong expression of CD11c, CD13, CD29, CD33, CD44, CD45, CD63, and CD71, and they were also positive for CD2, CD22, CD25, and CD54 although at a lower level. PB MC displayed similar immunophenotypic characteristics although they had a lower expression of CD11c, CD25, CD33, CD63, CD69, and CD71 with a higher reactivity for CD117. Unlike BM MC, PB MC were weakly positive for CD41a and CD61. Sequential studies showed decreased numbers of both BM and PB MC during clinical response associated with a higher expression of the CD29 and CD54 adhesion molecules. In turn, clinical relapse was related to increased numbers of PB and BM MC together with lower CD2, CD11c, CD45, and and CD54 expression and a higher reactivity for the CD117 and CD25 antigens. CD2 had become negative at the last follow-up study. In addition, an increased proportion of S-phase MC was observed at relapse. These findings suggest that the assessment of the quantitative expression of cell-adhesion molecules and growth-factor receptors together with cell cycle studies of mast cells could be of value for monitoring therapy and predicting clinical outcome in aggressive SMCD.
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Guntupalli KK, Bandi V, Sirgi C, Pope C, Rios A, Eschenbacher W. Usefulness of flow volume loops in emergency center and ICU settings. Chest 1997; 111:481-8. [PMID: 9042000 DOI: 10.1378/chest.111.2.481] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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97
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Northfelt DW, Dezube BJ, Thommes JA, Levine R, Von Roenn JH, Dosik GM, Rios A, Krown SE, DuMond C, Mamelok RD. Efficacy of pegylated-liposomal doxorubicin in the treatment of AIDS-related Kaposi's sarcoma after failure of standard chemotherapy. J Clin Oncol 1997; 15:653-9. [PMID: 9053490 DOI: 10.1200/jco.1997.15.2.653] [Citation(s) in RCA: 129] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
PURPOSE To determine the efficacy and safety of pegylated-liposomal doxorubicin in patients with AIDS and Kaposi's sarcoma (AIDS-KS) who experienced failure of standard chemotherapy. METHODS Fifty-three patients with advanced AIDS-KS who experienced disease progression or intolerable toxicities while receiving standard doxorubicin/bleomycin/vincristine (ABV) or bleomycin/vincristine (BV) chemotherapy were identified from a cohort of patients who were then treated with pegylated-liposomal doxorubicin. Patients received 20 mg/m2 pegylated-liposomal doxorubicin (Doxil; Sequus Pharmaceuticals, Inc, Menlo Park, CA) every 3 weeks. RESULTS Nineteen patients (36%) had a partial response (PR) and one patient had a clinical complete response (CCR). The median duration of response and time (from study entry) to treatment failure were 128 and 134 days, respectively. Of 28 patients who experienced disease progression while receiving combination regimens that contained standard doxorubicin, the PR rate was 32%, which suggests that the pegylated-liposomal encapsulation increases the therapeutic effect of doxorubicin. Patients obtained clinical benefits such as flattening of lesions (48%), improved lesion color (56%), relief of pain (45%), and loss of edema (83%). Forty-nine percent of patients had more than one clinical benefit. The most common adverse effect was leukopenia, which occurred in 40% of patients. Only 15% of patients had nausea and/or vomiting, none of which was severe; 9% experienced alopecia, also generally mild. CONCLUSION Pegylated-liposomal doxorubicin offers a new alternative for treatment of patients who have experienced failure of standard chemotherapy for AIDS-KS.
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98
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Vereda E, Rios A, Valcarcel M. Simultaneous Automatic Determination of Trace Amounts of Copper and Cobalt by Use of a Flow-through Sensor and First-derivative Spectrometry. Analyst 1997. [DOI: 10.1039/a605451j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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99
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Zhi ZL, Rios A, Valcarcel M. Direct Processing and Analysis of Solid and Other Complex Samples with Automatic Flow Injection Systems. Crit Rev Anal Chem 1996. [DOI: 10.1080/10408349608050576] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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100
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Rios A. Microcephaly. Pediatr Rev 1996; 17:386-7. [PMID: 8937170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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