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1.
Community Dent Health ; 40(4): 242-247, 2023 Nov 30.
Artículo en Inglés | MEDLINE | ID: mdl-37642340

RESUMEN

OBJECTIVE: To examine the association between the level of marginalization and tooth loss in adults aged ≥50 years in Mexico. METHODS: A retrospective cross­sectional study was conducted on 2098 adults selected from communities presenting both high and medium levels of marginalization, with data obtained from the annual reports of the Epidemiological Surveillance System of Oral Pathologies 2019-2022. Analysis considered sociodemographic characteristics such as sex, age, and years of education. The prevalence of tooth loss was determined using the Decayed, Missing and Filled teeth (DMFT) index. Negative binomial regression was used to estimate rate ratio (RR) and 95% confidence intervals (CIs), using the presence of lost teeth as an outcome. RESULTS: Most (62.4%) participants had lost at least one tooth, of whom 60.3% had a medium level of marginalization, 28.8% a high level, and 10.9% a very high level. More adults who lived in high or very high marginalization communities had lost teeth [RR=1.19 (95% CI 1.08 - 1.30)] than those living in communities with a medium level of marginalization. More males [RR=1.19 (95% CI 1.09 - 1.31)], adults ≥70 years [RR=1.77 (95% CI 1.57 - 1.99)], people who were illiterate [RR=1.60 (95% CI 1.35 - 1.88)] or who had poor oral hygiene [RR=1.26 (95% CI 1.15 - 1.38)] had also lost teeth. CONCLUSION: High and very high marginalization was associated with tooth loss in adults ≥50 years in Mexico. Effective oral health strategies are required to prevent tooth loss, as are interventions to improve access to and quality of dental services for marginalized communities.


Asunto(s)
Pérdida de Diente , Masculino , Adulto , Humanos , Anciano , Pérdida de Diente/epidemiología , México/epidemiología , Estudios Transversales , Estudios Retrospectivos , Salud Bucal
2.
Curr Microbiol ; 78(1): 1-10, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-33112974

RESUMEN

Polyhydroxyalkanoates (PHA) are bio-based polymers with the potential of replace petrochemical plastics. Nevertheless, PHA commercialization is still low, due to the high production cost associated with industrial-scale development. The most cost/efficient PHA recovery strategies use organochlorine compounds or harsh reagents implying a high environmental impact. Therefore, the importance of developing an economical and efficient recovery strategy cannot be overestimated. Thus, new approaches have been reported that look for creating a sustainable production process, such as biological recovery, PHA secretion or predator bacteria. Moreover, if bioplastics would become the plastics of the future, it must be necessary to replace the traditional PHA extraction methods by environmentally friendly options. Hence, the aim of this review is to analyze trends in the development of efficient technologies for the sustainable recovery of polyhydroxyalkanoates (PHA) produced by microorganisms.


Asunto(s)
Polihidroxialcanoatos , Bacterias/genética , Plásticos
3.
Mediators Inflamm ; 2020: 9278931, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33192178

RESUMEN

Localized cutaneous leishmaniasis (LCL) caused by Leishmania (Viannia) panamensis is an endemic disease in Panama. This condition causes ulcerated skin lesions characterized by a mixed Th1/Th2 immune response that is responsible for disease pathology. However, the maintenance of the in situ inflammatory process involves other elements, such as Th17 and inflammasome responses. Although these processes are associated with parasite elimination, their role in the increase in disease pathology cannot be discarded. Thus, the role in Leishmania infection is still unclear. In this sense, the present study aimed at characterizing the Th17 and inflammasome responses in the skin lesions of patients with LCL caused by L. (V.) panamensis to help elucidate the pathogenesis of this disease in Panama. Th17 and inflammasome responses were evaluated by immunohistochemistry (IHQ) in 46 skin biopsies from patients with LCL caused by L. (V.) panamensis. The Th17 immune response was assessed using CD3, CD4, RoRγt, IL-17, IL-6, IL-23, and TGF-ß1 antibodies, and the inflammasome response was assessed by IL-1ß, IL-18, and caspase-1 antibodies. The presence of the Th17 and inflammasome responses was evidenced by a positive reaction for all immunological markers in the skin lesions. An inverse correlation between the density of amastigotes and the density of RoRγt+, IL-17+, IL-1ß +, and caspase-1+ cells was observed, but no correlation between Th17 and the inflammasome response with evolutionary disease pathology was reported. These data showed the participation of Th17 cells and the inflammasome in the inflammatory response of the skin lesions of LCL caused by L. (V.) panamensis infection. These results suggest a role in the control of tissue parasitism of IL-17 and the activation of the NLRP3 inflammasome dependent on IL-1ß but cannot exclude their role in the development of disease pathology.


Asunto(s)
Inflamasomas/metabolismo , Leishmania/metabolismo , Leishmaniasis Cutánea/metabolismo , Piel/metabolismo , Células Th17/citología , Adulto , Anciano , Animales , Biopsia , Femenino , Humanos , Inflamación , Interleucina-1beta/metabolismo , Masculino , Persona de Mediana Edad , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Panamá/epidemiología , Piel/patología , Adulto Joven
4.
J Genet Couns ; 23(3): 289-98, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24306141

RESUMEN

Intellectual disability is a heterogeneous disorder with a wide phenotypic spectrum. Over 1,700 OMIM genes have been associated with this condition, many of which reside on the X-chromosome. The IQSEC2 gene is located on chromosome Xp11.22 and is known to play a significant role in the maintenance and homeostasis of the brain. Mutations in IQSEC2 have been historically associated with nonsyndromic X-linked intellectual disability. Case reports of affected probands show phenotypic overlap with conditions associated with pathogenic MECP2, FOXG1, CDKL5, and MEF2C gene mutations. Affected individuals, however, have also been identified as presenting with additional clinical features including seizures, autistic-behavior, psychiatric problems, and delayed language skills. To our knowledge, only 5 deleterious mutations and 2 intragenic duplications have been previously reported in IQSEC2. Here we report two novel IQSEC2 de novo truncating mutations identified through diagnostic exome sequencing in two severely affected unrelated male probands manifesting developmental delay, seizures, hypotonia, plagiocephaly, and abnormal MRI findings. Overall, diagnostic exome sequencing established a molecular diagnosis for two patients in whom traditional testing methods were uninformative while expanding on the mutational and phenotypic spectrum. In addition, our data suggests that IQSEC2 may be more common than previously appreciated, accounting for approximately 9 % (2/22) of positive findings among patients with seizures referred for diagnostic exome sequencing. Further, these data supports recently published data suggesting that IQSEC2 plays a more significant role in the development of X-linked intellectual disability with seizures than previously anticipated.


Asunto(s)
Exoma , Asesoramiento Genético , Enfermedades Genéticas Ligadas al Cromosoma X/genética , Factores de Intercambio de Guanina Nucleótido/genética , Discapacidad Intelectual/genética , Mutación , Convulsiones/complicaciones , Secuencia de Aminoácidos , Animales , Preescolar , Femenino , Enfermedades Genéticas Ligadas al Cromosoma X/complicaciones , Factores de Intercambio de Guanina Nucleótido/química , Humanos , Discapacidad Intelectual/complicaciones , Masculino , Datos de Secuencia Molecular , Linaje , Homología de Secuencia de Aminoácido
5.
Bio Protoc ; 14(11): e4996, 2024 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-38873019

RESUMEN

Many studies on mosquito biology rely on laboratory-reared colonies, emphasizing the need for standardized protocols to investigate critical aspects such as disease biology, mosquito behavior, and vector control methods. While much knowledge is derived from anthropophilic species from genera like Anopheles, Aedes, and Culex, there is a growing interest in studying mosquitoes that feed on non-human hosts. This interest stems from the desire to gain a deeper understanding of the evolution of diverse host range use and host specificity. However, there is currently a limited number of comprehensive protocols for studying such species. Considering this gap, we present a protocol for rearing Uranotaenia lowii, a mosquito species specialized in feeding on anuran amphibians by eavesdropping on host-emitted sound cues. Additionally, we provide instructions for successfully shipping live specimens to promote research on this species and similar ones. This protocol helps fill the current gap in comprehensive guidelines for rearing and maintaining colonies of anuran host-biting mosquitoes. It serves as a valuable resource for researchers seeking to establish colonies of mosquito species from the Uranotaeniini tribe. Ultimately, this protocol may facilitate research on the evolutionary ecology of Culicidae, as this family has recently been proposed to have originated from a frog-feeding ancestor. Key features • Rearing and maintenance of colonies of non-human host-biting mosquitoes that feed on frogs using host-emitted acoustic cues. • Provides shipping guidelines aimed to enhance the establishment of colonies by new research groups and specimen exchanges between labs.

6.
Acta Ortop Mex ; 37(6): 368-371, 2023.
Artículo en Español | MEDLINE | ID: mdl-38467459

RESUMEN

INTRODUCTION: the glomus tumor is a benign neoplasm originated in the smooth muscle cells of the vascular glomus. Approximately 80% of lesions are located on the upper extremity and, of these, the majority are in the subungual area. The diagnosis must include imaging tests, among which ultrasound stands out, being a good alternative due to its low cost and accessibility. OBJECTIVE: we present a case of late diagnosis of surgically managed glomus tumor, as well as a review of the existing literature for diagnosis, treatment, and prognosis of this uncommon pathology. CLINICAL CASE: the case of a 52-year-old female patient who reported chronic, burning pain, radiating to the distal phalanx of the thumb with no history of trauma, of 2 years of evolution and which limited her daily life activities, is presented. The exploration with interphalangeal Doppler ultrasound is complemented, being an excellent alternative due to its easy accessibility. A glomus tumor was diagnosed in the interphalangeal thumb. An "H" approach was performed on the interphalangeal fold with subungual dissection with resection of the tumor piece and follow-up by an outpatient clinic where a surgical wound with adequate healing was found. Physical examination with capacity for the mobilization of the distal interphalangeal joint (IFJ) and visual analogue scale (VAS) 1 point. The updated pathological evaluation of the existence of a glomus tumor. CONCLUSIONS: ultrasound is an excellent aid in the diagnosis, as well as in the surgical planning for the treatment of the glomus tumor; for being accessible, low cost and highly effective. The anatomopathological study is the gold standard.


INTRODUCCIÓN: el tumor glómico es una neoplasia benigna originada en las células musculares lisas del glomus vascular. Aproximadamente 80% de las lesiones se localiza en la extremidad superior y, de éstas, la mayoría se sitúa en la zona subungueal. El diagnóstico debe incluir exámenes de imágenes, entre los que destaca la ecografía, siendo una buena alternativa por su bajo costo y accesibilidad. OBJETIVO: presentamos un caso de diagnóstico tardío de tumor glómico manejado quirúrgicamente, así como revisión de la literatura existente para diagnóstico, tratamiento y pronóstico de esta patología poco común. CASO CLÍNICO: paciente femenino de 52 años que refería un dolor crónico, ardoroso, irradiado hacia falange distal del pulgar sin antecedente traumático, de dos años de evolución y que limitaba actividades de su vida diaria. Se complementa exploración con ultrasonido Doppler interfalángico siendo una excelente alternativa por su fácil accesibilidad. Se diagnostica tumor glómico en interfalángica pulgar. Se realiza abordaje en "H" sobre pliegue interfalángico con disección subungueal con resección de pieza tumoral y seguimiento por consulta externa donde se encuentra herida quirúrgica con adecuada cicatrización. Exploración física con capacidad para la movilización de movilización de la articulación interfalángica distal (IFD) y escala visual análoga (EVA) de 1 punto. La evaluación anatomopatológica informó la existencia de tumor glómico. CONCLUSIONES: la ecografía es una excelente ayuda en el diagnóstico, así como en la planificación operatoria para el tratamiento del tumor glómico, por ser accesible, de bajo costo y de alta efectividad. El estudio anatomopatológico es el estándar de oro que da la certeza diagnóstica.


Asunto(s)
Tumor Glómico , Enfermedades de la Uña , Humanos , Femenino , Persona de Mediana Edad , Pulgar/patología , Tumor Glómico/diagnóstico por imagen , Tumor Glómico/cirugía , Ultrasonografía , Enfermedades de la Uña/diagnóstico por imagen , Enfermedades de la Uña/cirugía
7.
Infection ; 40(6): 689-94, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22527878

RESUMEN

Dengue virus is the most significant virus transmitted by arthropods worldwide and may cause a potentially fatal systemic disease named dengue hemorrhagic fever. In this work, dengue virus serotype 4 was detected in the tissues of one fatal dengue hemorrhagic fever case using electron immunomicroscopy and molecular methods. This is the first report of dengue virus polypeptides findings by electron immunomicroscopy in human samples. In addition, not-previously-documented virus-like particles visualized in spleen, hepatic, brain, and pulmonary tissues from a dengue case are discussed.


Asunto(s)
Virus del Dengue/genética , Virus del Dengue/ultraestructura , Dengue Grave/diagnóstico , Adulto , Anticuerpos Antivirales/sangre , Encéfalo/ultraestructura , Encéfalo/virología , Cuba , ADN Viral/análisis , Virus del Dengue/aislamiento & purificación , Ensayo de Inmunoadsorción Enzimática , Resultado Fatal , Femenino , Corazón/virología , Humanos , Inmunoglobulina M/sangre , Riñón/ultraestructura , Riñón/virología , Hígado/ultraestructura , Hígado/virología , Microscopía Electrónica de Transmisión/métodos , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Dengue Grave/virología , Bazo/ultraestructura , Bazo/virología
8.
Artículo en Inglés | MEDLINE | ID: mdl-35597764

RESUMEN

OBJECTIVE: To study the feasibility and usefulness of ultrasound-guided pre-chemotherapy marking of pathologic lymph node followed by sentinel lymph node biopsy (SLNB)-pathologic node radioguided biopsy (ROLL) combined technique, in axillary involvement breast cancer patients undergoing neoadjuvant chemotherapy (NACT). MATERIAL AND METHODS: Prospective diagnostic study of 30 patients with breast cancer and cN1 axillary staging with NACT indication. Before NACT, the biopsied node was marked with a clip (MBN). After NACT an ultrasound was performed and in case of good response a SLNB (99mTc-nanocolloids) plus targeted axillary dissection MBN ROLL biopsy (99mTc-albumin macroaggregates) was performed. Axillary lymph node dissection (ALND) was performed if SLNB and/or MBN were positive for tumor cells. The localization-removal rate of the sentinel lymph node (SLN) and MBN were evaluated. False-negative rate (FNR) and positive predictive value (PPV) of SLNB alone were also evaluated. RESULTS: Thirty patients were included in the study. SLN could be detected in all patients while MBN was successfully removed in 27 (90%). The SLN coincided with MBN in 15 patients (50%). In 12 patients SLNB was negative while MBN positive, leading to a FNR of 44.4% for SLNB alone. We found a PPV of 37% for the SLNB. In 5 patients (18.5%) both SLNB and MBN were negative, avoiding ALND. CONCLUSIONS: SLNB-MBN radioguided biopsy ROLL combined technique is a useful and accessible procedure for accurate axillary restaging after NACT, avoiding the high rate of FNR of SLNB alone in this group of patients and avoiding a great number of ALND.


Asunto(s)
Neoplasias de la Mama , Ganglio Linfático Centinela , Cirugía Asistida por Computador , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/cirugía , Femenino , Humanos , Metástasis Linfática/diagnóstico por imagen , Terapia Neoadyuvante/métodos , Estudios Prospectivos , Ganglio Linfático Centinela/diagnóstico por imagen , Ganglio Linfático Centinela/patología , Ganglio Linfático Centinela/cirugía , Biopsia del Ganglio Linfático Centinela/métodos
9.
Insects ; 12(2)2021 Jan 28.
Artículo en Inglés | MEDLINE | ID: mdl-33525399

RESUMEN

Cutaneous Leishmaniasis transmission in the New World is observed in areas with rich sand fly species' faunas. The diversity and composition of sand fly species can change in response to seasonal weather and land use changes. Here, we present results from a two-year-long study where we collected, using Centers for Disease Control (CDC) light traps, sand flies from two rural areas, Las Pavas (LP) and Trinidad de las Minas (T) in western Panamá. Over 710 trap-nights, we collected 16,156 sand flies from 15 genera and 35 species. We identified 34 species in T, and the most abundant species collected was Nyssomyia trapidoi (Fairchild and Hertig, 1952) (n = 2278, 37%), followed by Psychodopygus panamensis (Shannon, 1926) (n = 1112, 18%), and Trichopygomyia triramula (Fairchild and Hertig, 1952) (n = 1063, 17%). In LP, we identified 26 species, and the most abundant species collected were Ty. triramula (n = 4729, 48%), and Ps. panamensis (n = 3444, 35%). We estimated a higher species' richness in T (Chao2 ± S.E.: 36.58 ± 3.84) than in LP (27.49 ± 2.28). In T, species' richness was significantly higher in the rainy season, but no seasonal differences were observed in LP. Species' assemblages were nested in the two areas. Phlebotomine sand fly species' abundance increased at the two sites during the rainy season. Our data suggest that seasonality is more important than land use as a factor driving sand fly species' diversity at the studied sites.

10.
J Med Genet ; 46(10): 689-93, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19556618

RESUMEN

BACKGROUND: Li-Fraumeni syndrome is an autosomal dominant cancer predisposition syndrome caused by germline mutations in the TP53 gene. The frequency of germline de novo TP53 mutations is largely unknown; few unequivocal de novo mutations have been reported. METHODS AND RESULTS: Of 341 patients with early onset cancer sent for clinical testing to a national reference laboratory, 75 patients had TP53 germline mutations. Five (7%) de novo mutations were identified, as well as an additional 10 TP53 germline mutations likely to be de novo by family history. The frequency of de novo TP53 mutations in this patient sample is at least 7% and may be as high as 20%. CONCLUSIONS: The possibility that de novo germline TP53 mutations are relatively common has implications for testing and the identification of potential Li-Fraumeni syndrome in patients with little or no family history of cancer.


Asunto(s)
Síndrome de Li-Fraumeni/genética , Proteína p53 Supresora de Tumor/genética , Adolescente , Adulto , Niño , Preescolar , Femenino , Predisposición Genética a la Enfermedad , Mutación de Línea Germinal , Humanos , Síndrome de Li-Fraumeni/complicaciones , Masculino , Persona de Mediana Edad , Mutación Missense
11.
J Helminthol ; 84(4): 341-7, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20078901

RESUMEN

Two species of Proctoeces Odhner, 1911 have been described in marine organisms from Chile: P. humboldti George-Nascimento & Quiroga (1983), parasitizing the gonads of keyhole limpets (Fissurella spp.), and P. chilensis Oliva (1984), an intestinal parasite of Sicyases sanguineus (Teleostei); both species were subsequently considered as P. lintoni Siddiqi & Cable (1960). To assist in the resolution of the taxonomic identification of Proctoeces species in marine organisms from Chile, phylogenetic studies using DNA sequences from the V4 region of the SSU rRNA gene were performed. Several specimens of P. lintoni were isolated from keyhole limpets (Fissurella spp.) and clingfish (S. sanguineus) from Bahia San Jorge (23°40'S) and Bahia Concepción (36°50'S). Phylogenetic analyses were conducted using three different approaches: a neighbour-joining (NJ), a maximum likelihood (ML) and Bayesian inference (BI). The phylogenetic analysis confirms that specimens of Proctoeces obtained from keyhole limpets and those specimens from the clingfish are in fact the same species. We prefer to consider our specimens as Proctoeces cf. lintoni, as the morphology of Proctoeces appears to be of doubtful value and genetic information about P. lintoni Siddiqi & Cable (1960) is not available. In addition, our results strongly suggest that there are at least three species in this genus.


Asunto(s)
Enfermedades de los Peces/parasitología , Gastrópodos/parasitología , Parasitosis Intestinales/veterinaria , Trematodos/clasificación , Trematodos/genética , Infecciones por Trematodos/veterinaria , Animales , Chile , ADN de Helmintos/análisis , ADN de Helmintos/aislamiento & purificación , Peces/parasitología , Genes de ARNr , Parasitosis Intestinales/parasitología , Filogenia , Análisis de Secuencia de ADN , Especificidad de la Especie , Infecciones por Trematodos/parasitología
12.
Braz J Biol ; 80(4): 907-913, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31800771

RESUMEN

Studies in Salvelinus alpinus, Arctic charr, indicate that it has a low capacity to hyposmorregulatory or adaption to sea in winter periods in Arctic waters. The investigation finds to determinate the rank optimum of salinity to can cultivate this species at Chile. The weight adequate was determined to join on the sea by analysis of gill Na+, K+-ATPase activity, that it was found between the ranks 80-130 g, with 14.5 U/mg. It underwent evaluation of fish growth of 72 g salinities from 0 (control), 18, 25 and 33 g/L (sea water) for 94 days. The results indicate that the largest increases were obtained in brackish water. T18 g/L and T25 g/L achieved growth of 25% and 19% on day 94 and term sampling respectively. It is important to mention that the 8% that survived in seawater introduced percentages growth 16.6% equivalent to brackish water and control. These results suggest that Salvelinus alpinus can grow in seawater, with levels of Na+, K+-ATPase similar to those submitted by Salmo salar with a weight not less than 80 g.


Asunto(s)
Salinidad , ATPasa Intercambiadora de Sodio-Potasio , Animales , Chile , Branquias , ATPasa Intercambiadora de Sodio-Potasio/metabolismo , Trucha/metabolismo
13.
Aust Vet J ; 98(5): 185-189, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-31971255

RESUMEN

BACKGROUND: Disseminated mycoses other than aspergillosis are infrequently reported in dogs. CASE REPORT: A 4-year-old female Labrador retriever was evaluated because of hyperthermia, cough and intermittent lameness. Computed tomography showed a soft tissue mass in the cranioventral mediastinum, severe left and central tracheobronchial lymphadenopathy, and moderate bilateral pleural effusion. Magnetic resonance imaging identified an irregular intra-axial well-defined contrast enhancing mass extending from the right frontal lobe to the right thalamus. Fungal culture yielded growth of Chaetomium globosum. CONCLUSION: In this case, the authors report a systemic mycosis in a Labrador retriever caused by C. globosum. To the best of authors' knowledge, this is the first report of systemic disease by this species in veterinary medicine.


Asunto(s)
Aspergilosis/veterinaria , Chaetomium , Micosis/veterinaria , Animales , Enfermedades de los Perros , Perros , Femenino
14.
Enferm Intensiva (Engl Ed) ; 31(3): 113-119, 2020.
Artículo en Inglés, Español | MEDLINE | ID: mdl-31735507

RESUMEN

AIM: to determine the perception of intensive care unit nursing staff on mobbing. METHOD: qualitative approach study, Grounded Theory was used, 12intensive care unit nurses of 2public hospitals in our country during December 2017. RESULTS: female sex predominated with an average age of 41.33 years old, mostly married, on night shift and trained a nursing technicians; 4categories emerged: general knowledge about mobbing, the origin of mobbing and its main actors, experiences of mobbing as a victim and as a spectator and the implications of mobbing in working life. DISCUSSION: issues of workplace harassment are sensitive for most health workers, since they deal with private situations and lack of support from superiors when they have been victims of harassment. The evidence shows that one of the reasons why mobbing can be perceived in different ways is because little is known about the real concept, it can be associated with multiple forms of violence and there is heterogeneity in the use of the term. CONCLUSION: the majority of intensive care unit nursing staff have been victims and witnesses of mobbing behaviour, with negative repercussions on their job satisfaction and performance; It is also the cause of constant staff turnover.


Asunto(s)
Actitud del Personal de Salud , Acoso Escolar , Enfermería de Cuidados Críticos , Unidades de Cuidados Intensivos , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad
15.
Pharmazie ; 64(7): 419-22, 2009 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-19694176

RESUMEN

A sensible and specific HPLC analytical method for the determination of tizoxanide (TZO), the active metabolite of nitazoxanide (NTZ) in rat plasma was developed and validated. Samples of 200 microL were efficiently deproteinized with acetonitrile. Assay was performed using a C18 CC with a ternary gradient elution of 50 mmol x L(-1) KH2PO4 : acetonitrile : methanol and UV/Vis detection at 416 nm. The analytical method was linear in a range of 10-1280 ng x mL(-1), precise (RSD % > 2.2), accurate (RE % < 7.8) and with high recovery (% > 95%). Stability studies showed that TZO was stable in plasma for short and long-time period (45 days) and proved to be suitable for pharmacokinetic studies of NTZ in rats. The method was also evaluated using human plasma samples and no statistical differences were found in the response-curve between rat and human samples.


Asunto(s)
Antihelmínticos/sangre , Tiazoles/sangre , Animales , Antihelmínticos/farmacocinética , Disponibilidad Biológica , Calibración , Cromatografía Líquida de Alta Presión , Semivida , Masculino , Nitrocompuestos , Control de Calidad , Ratas , Ratas Sprague-Dawley , Estándares de Referencia , Reproducibilidad de los Resultados , Tiazoles/farmacocinética
16.
Parasitol Int ; 71: 46-52, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30885795

RESUMEN

Cutaneous leishmaniasis (CL) is one of the most frequent parasitic zoonoses in Panama. Currently, conventional, molecular and histopathological tests are performed to diagnose CL. Immunohistochemistry (IHC) has proven to be a valuable tool to facilitate the diagnosis of leishmaniasis and to study the cellular immune response developed during the infection. Therefore, considering the absence of IHC in the diagnostic routine in Panama, the objective of this study is to demonstrate the usefulness of this test as a complementary diagnostic tool for improving the sensitivity of histopathology (HP) and helping to study the cellular immune response of patients. Samples from patients with suspected CL were analysed by intradermal reaction of Montenegro (IDRM), smears, culture, PCR (Viannia, Hsp-70), HP and IHC. According to the diagnostic criteria, 95.8% of patients were positive for Leishmania sp., that was characterized as Leishmania (V.) panamensis by PCR-HSP70/RFLP. From positive samples, Leishmania was detected by the tested diagnostic methods in the following degrees: 100% by IDRM, 60% by smears, 93.3% by culture, 100% by kDNA PCR, 78.3% by PCR Hsp-70, 50% by HP and 73.9% by IHC. Although IHC had a poor correlation (k = 0.191) with the diagnostic criteria, the sensitivities of both HP (76.1%) and smears (89.1%) were improved by combining them with IHC. IHC considerably improved the detection of the Leishmania parasites in the histopathological sections, supporting the need to implement this diagnostic tool in Panama. In addition, immunohistochemistry allows evaluation of the patient's immune response and thus provides new guidelines for the treatment and control of CL in Panama.


Asunto(s)
Inmunohistoquímica/normas , Leishmania/aislamiento & purificación , Leishmaniasis Cutánea/diagnóstico , Piel/patología , Adulto , Anciano , Antígenos de Protozoos/inmunología , Biopsia , ADN Protozoario/genética , Femenino , Técnicas Histológicas , Humanos , Inmunidad Celular , Leishmania/genética , Masculino , Persona de Mediana Edad , Panamá , Reacción en Cadena de la Polimerasa , Polimorfismo de Longitud del Fragmento de Restricción , Sensibilidad y Especificidad , Piel/parasitología , Adulto Joven
17.
J Pediatr Surg ; 52(7): 1132-1134, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28017414

RESUMEN

INTRODUCTION: Gastroschisis (GS) is a common abdominal wall defect necessitating neonatal surgery and intensive care. We hypothesized that inborn patients had improved outcomes compared to patients born at an outside hospital (outborn) and transferred for definitive treatment. METHODS: A single center, retrospective chart review at a pediatric tertiary care center was performed from 2010 to 2015. All patients whose primary surgical treatment of GS was performed at this center were included. We compared patients delivered within our center (inborn) to patients delivered outside of our center and transferred for surgical care (outborn). Babies with complicated gastroschisis were excluded. RESULTS: During the study period 79 patients with GS were identified. Of these, 53 were inborn and 26 were outborn. Sixteen patients were excluded for complicated GS. The rate of complicated GS was higher in the outborn group (32%) compared to the inborn population (11%) (p=0.03). Duration of stay, readmission rate and time on TPN were all significantly decreased for inborn patients, while time to definitive closure was similar. Mortality was 0% for both inborn and outborn patients. CONCLUSION: Patients with uncomplicated GS seem to benefit from delivery with immediate pediatric surgical care available eliminating the need for transfer. LEVEL OF EVIDENCE: III.


Asunto(s)
Gastrosquisis/cirugía , Cuidado del Lactante/métodos , Unidades de Cuidado Intensivo Neonatal , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Estudios Retrospectivos , Centros de Atención Terciaria , Resultado del Tratamiento
18.
Carbohydr Polym ; 149: 94-101, 2016 09 20.
Artículo en Inglés | MEDLINE | ID: mdl-27261734

RESUMEN

This article deals with the preparation of bionanocomposite hydrogels from natural polymers and nanoentities, an emerging class of materials for biotechnological and biomedical applications. Herein, the applicability of the Diels-Alder "click" reaction to the design of bionanocomposite hydrogels from furan modified gelatin using maleimide-functionalized cellulose nanocrystals as multifunctional cocross-linkers is demonstrated. The functionalization of cellulose nanocrystals with maleimide moieties was confirmed by XPS. The swelling and rheological properties of the resulting bionanocomposite confirmed the formation of hydrogel networks with covalently embedded nanoentities. The Diels-Alder reaction resulted in the formation of stiffer networks with lower swelling ratios due to the formation of additional cross-linking points. The designed "click" strategy proved to be a promising candidate for the formation of fully renewable bionanocomposite hydrogels.


Asunto(s)
Materiales Biocompatibles/química , Celulosa/química , Hidrogeles/química , Maleimidas/química , Nanocompuestos/química , Nanopartículas/química
19.
Farm. comunitarios (Internet) ; 13(3): 5-16, julio 2021. tab
Artículo en Español | IBECS (España) | ID: ibc-217714

RESUMEN

Objetivos: evaluar la adherencia terapéutica de pacientes con patologías prevalentes, identificandofactores relacionados. Cuantificar la mejora en la adherencia conseguida mediante servicios profesionalesfarmacéuticos (SPF). Comprobar la satisfacción con el servicio.Métodos: diseño: 1ª fase: estudio monocéntrico, descriptivo, longitudinal, realizado entre 18/3y 10/4/2019. 2ª fase: estudio cuasiexperimental sin grupo control, con intervención educativa y SPF,revisión del uso de la medicación (RUM) y sistemas personalizados de dosificación (SPD), octubre-noviembre/2019.Sujetos: pacientes mayores de edad con dislipemia, hipertensión o diabetes, que acudieron a lafarmacia y aceptaron participar. Para la 2ª fase se seleccionaron pacientes que resultaron no adherentesen la 1ª.Variables: adherencia (medida con el test Morisky-Green), satisfacción con el servicio. Variables demográficas.Resultados: 1ª fase: 101 pacientes, media de edad de 69 años. 50,5% hombres. La proporción deno adherentes fue del 55,4%. 40 (71,4%) olvidan alguna vez tomar sus medicamentos. La adherenciano resultó relacionada con sexo, edad, acompañamiento, número de patologías o nivel de estudios(p>0,05).2ª fase: RUM: el porcentaje de no adherentes disminuyó al 67%. SPD: 9 de los 10 pacientes resultaron adherentes al final del estudio. 1 paciente resultó no adherente por olvidar esporádicamente algunatoma.El 100% de las encuestas de satisfacción dio como resultado “muy satisfechos”, continuarían visitando la farmacia y la recomendarían.Conclusiones: la adherencia terapéutica resulto baja, menor del 50%. No se encontró relación con losfactores analizados. (AU)


Asunto(s)
Humanos , Cumplimiento y Adherencia al Tratamiento , Farmacia , Utilización de Medicamentos , Satisfacción del Paciente , Dosificación
20.
Hum Exp Toxicol ; 24(6): 319-24, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-16004199

RESUMEN

This in vitro experiment measured the genotoxic effects of ethyl paraoxon, the active metabolite of ethyl parathion. To assess genotoxicity, we used the micronuclei (MN) technique by blocking cytokinesis, and the 'comet' assay. We cultured peripheral blood samples from healthy adults and umbilical cord blood samples from four clinically healthy newborns to identify the frequency of MN. After 48 hours, we added the following ethyl paraoxon concentrations to the cultures: 0.0, 0.075, 0.100, 0.160, and 0.200 microg/mL. For the comet assay, following Singh's technique, we treated the blood samples for 2 hours with similar doses of the metabolite. The comet assay results, at a concentration of 0.075 microg/mL, showed that ethyl paraoxon causes a greater DNA migration that followed a dose-response pattern, a greater intensity being observed in lymphocytes from newborns. A comparison of the treatment and control groups indicated that only the 0.200 microg/mL concentration produced a slight increase in MN. In conclusion, our study identified primary DNA damage due to ethyl paraoxon, with a major effect on newborn lymphocytes, as well as an effect on the frequency of MN in the study groups at high concentrations only.


Asunto(s)
Daño del ADN , Linfocitos/efectos de los fármacos , Micronúcleos con Defecto Cromosómico/efectos de los fármacos , Paraoxon/análogos & derivados , Adulto , Ensayo Cometa , Citocinesis/efectos de los fármacos , Citocinesis/genética , ADN/análisis , ADN/genética , Relación Dosis-Respuesta a Droga , Femenino , Sangre Fetal/citología , Sangre Fetal/efectos de los fármacos , Sangre Fetal/metabolismo , Humanos , Recién Nacido , Linfocitos/citología , Linfocitos/metabolismo , Masculino , Pruebas de Micronúcleos/métodos , Paraoxon/farmacología
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