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Roselló Keränen S, Pizzo C, Huerta M, Muñoz E, Alfaro-Cervello C, Aliaga R, Vera A, Jordá E, Garcés M, Roda D, Tarazona N, Dorcaratto D, Guijarro J, Sánchiz V, Fleitas T, Lluch P, Pascual I, Ferrandez A, Cervantes A, Sabater L. 1565P Clinical outcome after perioperative treatment on locally advanced and borderline pancreatic cancer: Experience of a single academic center. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Albares MP, Betlloch I, Guijarro J, Vergara G, Pascual JC, Botella R. Severe pruritus in a haemodialysed patient: dramatic improvement with granisetron. Br J Dermatol 2003; 148:376-7. [PMID: 12588407 DOI: 10.1046/j.1365-2133.2003.05097_11.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Merino E, Bañuls J, Boix V, Franco A, Guijarro J, Portilla J, Betlloch I. Relapsing cutaneous alternariosis in a kidney transplant recipient cured with liposomal amphotericin B. Eur J Clin Microbiol Infect Dis 2003; 22:51-3. [PMID: 12582745 DOI: 10.1007/s10096-002-0856-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
An immunosuppressed patient who presented with unusual clinical signs of cutaneous alternariosis, including papular, nodular and verrucous lesions of the forearms, is reported. In spite of continuous treatment with oral itraconazole for 6 months, a large, progressive, necrotic ulcer appeared on the patient's left leg. Liposomal amphotericin B was then administered (total dose, 750 mg) with excellent clinical results.
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Affiliation(s)
- E Merino
- Unit of Infectious Diseases, Hospital General Universitario de Alicante, Pintor Baeza s/n, 03012 Alicante, Spain.
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Ferrer MD, Gil J, Guijarro J, Pascual I, Parreño E. Estenosis de la arteria mesentérica superior como causa de isquemia crónica intestinal: Tratamiento percutáneo como alternativa terapéutica. ACTA ACUST UNITED AC 2002. [DOI: 10.4321/s0212-71992002001100006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ferrer MD, Gil J, Guijarro J, Pascual I, Parreño E. [Chronic mesenteric ischemia due to superior mesenteric artery stenosis. Percutaneous therapy as alternative treatment]. An Med Interna 2002; 19:576-8. [PMID: 12522894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Chronic mesenteric arterial ischemia is an uncommon condition associated with a high morbidity and mortality. It is most commonly caused by atherosclerotic occlusive disease. Patients may suffer epigastric or periumbilical post-prandial pain ten to thirty minutes after eating. A case of chronic mesenteric ischemia is presented due to superior mesenteric artery stenosis. The diagnosis was performed with doppler sonography and angiography and was treated with percutaneous transluminal angioplasty. The patient became completely asymptomatic. The purpose of this report is to present the case, clinic and radiological features and to describe the percutaneous procedure. We believe that percutaneous treatment offers an improvement in this pathology with a low complication rate, decreasing the admission days and increasing patient comfort degree.
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Affiliation(s)
- M D Ferrer
- Servicio de Radiodiagnóstico, Sección de Rx Vascular, Hospital Clínico Universitario, Avda, Blasco Ibáñez, 17, 46010 Valencia
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Silvestre JF, Betlloch I, Guijarro J, Albares MP, Vergara G. Erythema-multiforme-like eruption on the application site of a nitroglycerin patch, followed by widespread erythema multiforme. Contact Dermatitis 2001; 45:299-300. [PMID: 11722494 DOI: 10.1034/j.1600-0536.2001.450512.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- J F Silvestre
- Section of Dermatology, Hospital General de Alicante, C/ Pintor Baeza s/n, 03010 Alicante, Spain
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7
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Hackmann C, Guijarro J, Chizhov I, Engelhard M, Rödig C, Siebert F. Static and time-resolved step-scan Fourier transform infrared investigations of the photoreaction of halorhodopsin from Natronobacterium pharaonis: consequences for models of the anion translocation mechanism. Biophys J 2001; 81:394-406. [PMID: 11423423 PMCID: PMC1301520 DOI: 10.1016/s0006-3495(01)75708-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The molecular changes during the photoreaction of halorhodopsin from Natronobacterium pharaonis have been monitored by low-temperature static and by time-resolved step-scan Fourier transform infrared difference spectroscopy. In the low-temperature L spectrum anions only influence a band around 1650 cm(-1), tentatively assigned to the C=N stretch of the protonated Schiff base of L. The analysis of the time-resolved spectra allows to identify the four states: K, L(1), L(2), and O. Between L(1) and L(2), only the apoprotein undergoes alterations. The O state is characterized by an all-trans chromophore and by rather large amide I spectral changes. Because in our analysis the intermediate containing O is in equilibrium with a state indistinguishable from L(2), we are unable to identify an N-like state. At very high chloride concentrations (>5 M), we observe a branching of the photocycle from L(2) directly back to the dark state, and we provide evidence for direct back-isomerization from L(2). This branching leads to the reported reduction of transport activity at such high chloride concentrations. We interpret the L(1) to L(2) transition as an accessibility change of the anion from the extracellular to the cytosolic side, and the large amide I bands in O as an indication for opening of the cytosolic channel from the Schiff base toward the cytosolic surface and/or as indication for changes of the binding constant of the release site.
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Affiliation(s)
- C Hackmann
- Sektion Biophysik, Institut für Molekulare Medizin und Zellforschung, Albert-Ludwigs-Universität, D-79104 Freiburg, Germany
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Guijarro J, Silvestre JF, Ramón RL, Betlloch MI, Botella R. A peculiar pattern of alopecia. Arch Dermatol 2001; 137:365-70. [PMID: 11255343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- J Guijarro
- Hospital General de Alicante, Alicante, Spain
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Silvestre JF, Botella R, Ramón R, Guijarro J, Betlloch I, Morell AM. Periumbilical contact vitiligo appearing after allergic contact dermatitis to nickel. Am J Contact Dermat 2001; 12:43-4. [PMID: 11300099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Silvestre JF, Bañuls J, Ramón R, Guijarro J, Botella R, Betlloch I. Unilateral multiple facial angiofibromas: a mosaic form of tuberous sclerosis. J Am Acad Dermatol 2000; 43:127-9. [PMID: 10863238 DOI: 10.1067/mjd.2000.106361] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Tuberous sclerosis has many forms of clinical presentation. Rarely, multiple facial angiofibromas of unilateral distribution have been reported. We describe 2 patients with such a presentation and hypothesize that this is a mosaic form of tuberous sclerosis.
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Affiliation(s)
- J F Silvestre
- Department of Dermatology, Hospital General de Alicante, Alicante, Spain
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Ferrer-Puchol MD, Esteban JE, Gil J, Guijarro J. Sonographic diagnosis of a pseudoaneurysm in an intravenous drug abuser. J Clin Ultrasound 2000; 28:104-107. [PMID: 10641010 DOI: 10.1002/(sici)1097-0096(200002)28:2<104::aid-jcu10>3.0.co;2-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report a case of a traumatic pseudoaneurysm and arteriovenous fistula in the groin of a drug abuser. Gray-scale and Doppler sonography were used to establish the diagnosis. Gray-scale sonography revealed an anechoic, ovoid, 7 x 4 cm mass posterior to the right superficial femoral artery, which was displaced anteriorly, with limited visualization of the deep femoral artery. Power Doppler sonography showed complete color filling of the mass, and turbulence was seen on conventional color Doppler sonography. The turbulence was confirmed with pulsed Doppler sonography of the mass. Pulsed Doppler imaging of the right external iliac vein also showed an arterialized spectral flow pattern.
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Affiliation(s)
- M D Ferrer-Puchol
- Department of Radiology, Hospital Clínico Universitario, Avenida Vicente Blasco Ibáñez, 17, 46010 Valencia, Spain
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Pineda JA, Larrauri J, Macías J, Hernández A, Guijarro J, Sayago M, Gavilán F, Aguilar J, Lissen E. Rapid progression to liver cirrhosis of toxic hepatitis due to ebrotidine. J Hepatol 1999; 31:777-8. [PMID: 10551406 DOI: 10.1016/s0168-8278(99)80362-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Abstract
We report a subcutaneous bronchogenic cyst in a 7-year-old girl with unusual presentation as a nodular lesion. The cyst was excised and no connection with deeper structures was found. Histologic examination showed the typical features of a bronchogenic cyst. The characteristic clinical and histologic features of bronchogenic cysts are reviewed. The problems of differential diagnosis are also discussed.
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Affiliation(s)
- R Ramón
- Department of Dermatology, Hospital General de Alicante, Spain
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Bañuls J, Ramon R, Guijarro J, Alfonso R, Silvestre JF, Climent JM, Botella R. Segmental arrangement of multiple, partly congenital and partly acquired melanocytic nevi. Eur J Dermatol 1998; 8:80-2. [PMID: 9649718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A 15 year-old girl presented with numerous congenital melanocytic nevi, occasionally hairy, with a segmental distribution at the left pre-auricular region. On the left side of the back of the neck there were multiple melanocytic nevi with a warty appearance, which had started to appear when she was 5 and which had remained stable from the time she was 10. These lesions had a distribution reminiscent of an epidermal nevus with a pattern similar to Blaschko's lines. On general physical examination there was a moderate degree of idiopathic scoliosis, with a left lumbar curvature. Biopsies were taken from both types of nevus which were diagnosed as congenital compound melanocytic nevus and acquired compound melanocytic nevus respectively. We consider that the segmental distribution of the melanocytic nevi of this patient supports the theory that a genetic defect determined the appearance of both these congenital and acquired lesions.
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Affiliation(s)
- J Bañuls
- Servicio de Dermatología, Hospital General de Alicante, c/Maestro Alonso 109, 03010 Alicante, Spain.
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Galbis JM, Fuster CA, Martín E, Guijarro J, Arnau A, Fernández-Centeno A, Villalba R, Villalba F, Cantó A. [Iatrogenic bilateral hydrothorax following the placement of a central catheter]. NUTR HOSP 1995; 10:234-6. [PMID: 7662762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We present a case of bilateral hydrothorax after internal jugular vein catheterization. 60 hours after placing the catheter, the patient showed an abrupt picture of jugular ingurgitation, abolished vesicular breath sounds, and displaced cardiac tones. It was necessary to immediately drain one hemithorax to guarantee ventilation of the patient. The present article examines iatrogenicity derived from the placement of central catheters, and special attention is given to the need for post-insertion x-ray control.
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Affiliation(s)
- J M Galbis
- Servicio de Cirugía Torácica, Hospital General Universitario de Valencia, España
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Abstract
Incubation of [alpha-32P]GTP with cellular extracts or membranes of Streptomyces coelicolor labels a protein of 43 kDa, which was also labeled with [8,5'-3H]GTP but not with [alpha-32P]ATP or [gamma-32P]GTP. Radioactivity remained associated with this protein after boiling in 0.1 N NaOH, but it was dissociated after incubation in 0.1 N HCl or hydroxylamine. Chromatographic analysis of the HCl-dissociated compound showed that GMP was the covalently bound nucleotide. Furthermore, guanylylation appeared to be reversible and to take place by a pyrophosphorylytic mechanism. Guanylylation was more efficient at low temperatures. Several Streptomyces species showed a guanylylated protein with a similar molecular mass.
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Affiliation(s)
- A J Obaya
- Departamento de Biologia Funcional, Facultad de Medicina, Universidad de Oviedo, Spain
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Willey J, Santamaria R, Guijarro J, Geistlich M, Losick R. Extracellular complementation of a developmental mutation implicates a small sporulation protein in aerial mycelium formation by S. coelicolor. Cell 1991; 65:641-50. [PMID: 2032288 DOI: 10.1016/0092-8674(91)90096-h] [Citation(s) in RCA: 139] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The filamentous bacterium S. coelicolor differentiates by forming aerial hyphae, which protrude into the air and metamorphose into chains of spores. Aerial hyphae formation is associated with the production of a small, abundant protein, SapB, which is present in a zone around colonies of differentiating bacteria. Production of SapB is impaired in bld mutants, which are blocked in aerial hyphae formation, but not in whi mutants in which spore formation is prevented. We report that aerial hyphae formation by a newly identified bld mutant is restored by juxtaposition of the mutant near colonies of SapB-producing bacteria or by the application of the purified protein near mutant colonies. These observations implicate SapB in aerial mycelium formation and suggest that SapB is a morphogenetic protein that enables hyphae on the surface of colonies to grow into the air.
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Affiliation(s)
- J Willey
- Department of Cellular and Developmental Biology, Harvard University, Cambridge, Massachusetts
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Schauer A, Ranes M, Santamaria R, Guijarro J, Lawlor E, Mendez C, Chater K, Losick R. Visualizing gene expression in time and space in the filamentous bacterium Streptomyces coelicolor. Science 1988; 240:768-72. [PMID: 3363358 DOI: 10.1126/science.3363358] [Citation(s) in RCA: 69] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Streptomycetes are prokaryotic microorganisms that exhibit a complex, mycelial fungus-like cycle of morphological differentiation. Development involves at least two spatially separated types of cells: the branching hyphae of the substrate mycelium, which penetrate the stratum upon which the colony feeds, and the upwardly protruding hyphae of the aerial mycelium, which undergo metamorphosis into spores. The luciferase-encoding luxA and luxB operon of the luminescent marine bacterium Vibrio harveyi was used as a promoter probe to visualize gene expression in differentiating colonies of Streptomyces coelicolor. Promoters for developmental genes of several kinds gave distinctive temporal and spatial patterns of light emission.
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Affiliation(s)
- A Schauer
- Department of Cellular and Developmental Biology, Harvard University, Cambridge, MA 02138
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Guijarro J, Santamaria R, Schauer A, Losick R. Promoter determining the timing and spatial localization of transcription of a cloned Streptomyces coelicolor gene encoding a spore-associated polypeptide. J Bacteriol 1988; 170:1895-901. [PMID: 2450872 PMCID: PMC211047 DOI: 10.1128/jb.170.4.1895-1901.1988] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Streptomyces coelicolor is a filamentous, gram-positive bacterium that exhibits a complex cycle of morphological differentiation involving the formation of an aerial mycelium of multinucleoid hyphae which undergo septation to form long chains of spores. We report the identification of two proteins of 13 and 3 kilodaltons, designated SapA and SapB, respectively, that are produced during formation of the aerial mycelium and are found in assocation with purified, mature spores. We cloned the structural gene (sapA) for one of these spore-associated proteins. Nucleotide sequence analysis suggests that the 13-kilodalton polypeptide is derived from a larger pre- or preproprotein containing a leader sequence of 37 amino acids. Nuclease protection-hybridization analysis and experiments using the Vibrio harveyi, luciferase-encoding luxAB operon as a gene tag demonstrated that expression of sapA is controlled from a promoter contained within a region of less than 110 base pairs in length, whose transcription start site is located approximately 50 base pairs upstream from the initiation codon for the sapA open reading frame. Transcription of sapA was induced at the time of appearance of the aerial mycelium, and the level of sapA transcripts was significantly reduced in certain mutants blocked in aerial mycelium (bld) and or spore (whi) formation. As further evidence of the association of sapA transcription with morphological differentiation, experiments in which we monitored sapA transcription topographically by use of a sapA-luxAB operon fusion demonstrated a close spatial correlation between colony regions undergoing aerial mycelium formation and zones of sapA-promoted light emission.
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Affiliation(s)
- J Guijarro
- Department of Cellular and Developmental Biology, Harvard University, Cambridge, Massachusetts 02138
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