RESUMEN
BACKGROUND: Neutrophil gelatinase-associated lipocalin (NGAL) is a biomarker for the early prediction of renal damage and the progression of chronic kidney disease (CKD) in humans and dogs. HYPOTHESIS: Neutrophil gelatinase-associated lipocalin also may play a role in the progression of CKD in cats. ANIMALS: Eighty CKD and 18 control cats. METHODS: Cats were categorized into different stages according to the International Renal Interest Society (IRIS) staging system. Urine and plasma samples were collected and tested for NGAL concentrations using an in-house sandwich ELISA system and urinary NGAL (uNGAL)-to-creatinine ratio (UNCR) was determined. Cats in which serum creatinine concentration increased by >0.5 mg/dL from baseline within 30 days were defined as exhibiting progression. RESULTS: The urinary NGAL and UNCR of CKD cats were significantly higher than those of healthy cats (P < .05) and were highly correlated with serum creatinine concentration. The area under the receiver operating characteristic curve (AUROC) for uNGAL, when predicting the progression of CKD, was 0.71 and the best cutoff value was 2.06 ng/mL with a sensitivity of 76.9% and a specificity of 75%. The AUROC for UNCR when predicting the progression of CKD was 0.79 and the best cutoff value was 4.08 × 10-6 with a sensitivity of 76.9% and specificity of 79.2%. Cats with UNCR values higher than their cutoffs experienced significantly faster deterioration with a median of 19 days. CONCLUSIONS: Both urinary NGAL and UNCR are useful markers for the prediction of CKD progression in cats.
Asunto(s)
Biomarcadores/sangre , Enfermedades de los Gatos/diagnóstico , Lipocalina 2/sangre , Insuficiencia Renal Crónica/veterinaria , Animales , Análisis Químico de la Sangre/veterinaria , Estudios de Casos y Controles , Enfermedades de los Gatos/sangre , Gatos , Femenino , Masculino , Insuficiencia Renal Crónica/sangre , Insuficiencia Renal Crónica/diagnóstico , Sensibilidad y EspecificidadRESUMEN
Lung cancer is the leading cause of deaths in cancer patients in the United States. Identification of new molecular targets is clearly needed to improve therapeutic outcomes of this devastating human disease. Activating mutations in K-Ras oncogene and increased expression of FOXM1 protein are associated with poor prognosis in patients with non-small-cell lung cancer. Transgenic expression of activated Kras(G12D) in mouse respiratory epithelium is sufficient to induce lung adenocarcinomas; however, transcriptional mechanisms regulated by K-Ras during the initiation of lung cancer remain poorly understood. Foxm1 transcription factor, a downstream target of K-Ras, stimulates cellular proliferation during embryogenesis, organ repair and tumor growth, but its role in tumor initiation is unknown. In the present study, we used transgenic mice expressing Kras(G12D) under control of Sftpc promoter to demonstrate that Foxm1 was induced in type II epithelial cells before the formation of lung tumors. Conditional deletion of Foxm1 from Kras(G12D)-expressing respiratory epithelium prevented the initiation of lung tumors in vivo. The loss of Foxm1 inhibited expression of K-Ras target genes critical for the nuclear factor-κB (NF-κB) and c-Jun N-terminal kinase (JNK) pathways, including Ikbkb, Nfkb1, Nfkb2, Rela, Jnk1, N-Myc, Pttg1 and Cdkn2a. Transgenic overexpression of activated FOXM1 mutant was sufficient to induce expression of these genes in alveolar type II cells. FOXM1 directly bound to promoter regions of Ikbkb, Nfkb2, N-Myc, Pttg1 and Cdkn2a, indicating that these genes are direct FOXM1 targets. FOXM1 is required for K-Ras-mediated lung tumorigenesis by activating genes critical for the NF-κB and JNK pathways.
Asunto(s)
Factores de Transcripción Forkhead/genética , Regulación Neoplásica de la Expresión Génica , Neoplasias Pulmonares/genética , Proteínas Proto-Oncogénicas p21(ras)/genética , Animales , Antibióticos Antineoplásicos/farmacología , Western Blotting , Carcinogénesis/efectos de los fármacos , Carcinogénesis/genética , Carcinogénesis/metabolismo , Doxorrubicina/farmacología , Epitelio/efectos de los fármacos , Epitelio/metabolismo , Epitelio/patología , Proteína Forkhead Box M1 , Factores de Transcripción Forkhead/metabolismo , Humanos , Proteínas Quinasas JNK Activadas por Mitógenos/metabolismo , Pulmón/efectos de los fármacos , Pulmón/metabolismo , Pulmón/patología , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/metabolismo , Ratones Endogámicos C57BL , Ratones Noqueados , Ratones Transgénicos , FN-kappa B/metabolismo , Regiones Promotoras Genéticas/genética , Unión Proteica , Proteínas Proto-Oncogénicas p21(ras)/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Transducción de Señal/efectos de los fármacosRESUMEN
Flowering ginger, Alpinia purpurata (Vieill.) K. Schum., is a popular cut flower and tropical landscape plant in Hawaii. In Hawaii, ginger flowers, including red and pink cultivars, are grown as field crops with an estimated annual sales of more than $1.6 million (USD) in 2006 (2). In June 2009, a commercial ginger flower grower from Waimanalo, Oahu, Hawaii reported plants with symptoms that included severe mosaic and stripes on the leaves. Flowers showed significant cupping and browning and growers report a reduction in size and shelf life. Symptomatic ginger was also identified at the Lyon Arboretum in Honolulu. Double-stranded RNAs (dsRNAs) were isolated from pooled leaf samples collected from 42 symptomatic plants at two locations on the island of Oahu to further characterize the pathogen associated with the symptomatic ginger. dsRNAs of approximately 0.7, 1.1, 1.8, 2.2, and 12 kb were present in the extractions from symptomatic plants but not in extractions from asymptomatic plants. Partial cloning and sequence analysis of the dsRNA revealed 95 to 98% nucleotide identity to sequences of P1, HC-Pro, C1, 6K2, VpG, NIb, and CP genes and the 3' untranslated region (total approximately 6 kb) of Banana bract mosaic virus (BBrMV). Total RNAs were also isolated from the symptomatic and asymptomatic plants from the Waimanalo farm and Lyon Arboretum. These RNA isolations were used in reverse transcription (RT)-PCR with primers Bract N1: 5'-GGRACATCACCAAATTTRAATGG-3' and Bract NR: 5'-GTGTGCYTCTCTAGCCCTGTT-3' (1), to amplify a 279-bp conserved region of the coat protein of BBrMV. Amplicons of the appropriate size were obtained from 38 of the symptomatic plants, whereas none were obtained from asymptomatic controls. RT-PCR amplicons of arbitrarily selected samples were cloned into pGEM-T Easy, sequenced, and found to be 99% identical to corresponding sequences of BBrMV. Furthermore, using double-antibody sandwich-ELISA assay and antibodies (3), we developed a system that can specifically detect BBrMV in infected flowering ginger plants and not in healthy appearing ginger. To our knowledge, this is the first report of BBrMV in flowering ginger in Hawaii. Further research is needed to determine if BBrMV infecting ginger poses a threat to banana, edible ginger, and other closely related ornamentals in Hawaii. References: (1) M. L. Iskra-Caruana et al. J. Virol. Methods 153:223, 2008. (2) Statistics of Hawaii Agriculture (2006). HDOA/USDA (NASS). 96, 2008. (3) J. E. Thomas et al. Phytopathology 87:698, 1997.
RESUMEN
The forkhead box m1 (Foxm1 or Foxm1b) protein (previously called HFH-11B, Trident, Win or MPP2) is abundantly expressed in human non-small cell lung cancers where it transcriptionally induces expression of genes essential for proliferation of tumor cells. In this study, we used Rosa26-Foxm1 transgenic mice, in which the Rosa26 promoter drives ubiquitous expression of Foxm1 transgene, to identify new signaling pathways regulated by Foxm1. Lung tumors were induced in Rosa26-Foxm1 mice using the 3-methylcholanthrene (MCA)/butylated hydroxytoluene (BHT) lung tumor initiation/promotion protocol. Tumors from MCA/BHT-treated Rosa26-Foxm1 mice displayed a significant increase in the number, size and DNA replication compared to wild-type mice. Elevated tumor formation in Rosa26-Foxm1 transgenic lungs was associated with persistent pulmonary inflammation, macrophage infiltration and increased expression of cyclooxygenase-2 (Cox-2), Cdc25C phosphatase, cyclin E2, chemokine ligands CXCL5, CXCL1 and CCL3, cathepsins and matrix metalloprotease-12. Cell culture experiments with A549 human lung adenocarcinoma cells demonstrated that depletion of Foxm1 by either short interfering RNA transfection or treatment with Foxm1-inhibiting ARF 26-44 peptide significantly reduced Cox-2 expression. In co-transfection experiments, Foxm1 protein-induced Cox-2 promoter activity and directly bound to the -2566/-2580 bp region of human Cox-2 promoter.
Asunto(s)
Adenoma/genética , Factores de Transcripción Forkhead/genética , Neoplasias Pulmonares/genética , Adenoma/inducido químicamente , Adenoma/patología , Animales , Hidroxitolueno Butilado , Ciclooxigenasa 2/genética , Replicación del ADN/efectos de los fármacos , Replicación del ADN/genética , Proteína Forkhead Box M1 , Perfilación de la Expresión Génica , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Predisposición Genética a la Enfermedad , Humanos , Neoplasias Pulmonares/inducido químicamente , Neoplasias Pulmonares/patología , Metilcolantreno , Ratones , Ratones Transgénicos , Análisis de Secuencia por Matrices de Oligonucleótidos , Regiones Promotoras Genéticas , Transfección , Carga Tumoral , Células Tumorales CultivadasRESUMEN
Cysticercus cellulosae, C. bovis, and C. taiwanensis are the three species of cysticercosis of human taeniid with their adults worms Taenia solium, T. saginata saginata and T. s. asiatica respectively. C. cellulosae is prevalent in America, Europe and Asia, C. bovis in Africa, America and Asia and C. taiwanensis in Asia. The natural infection source is pig for C. cellulosae, cattle for C. bovis and pig and wild boar for C. taiwanensis. The predilection sites are muscles for C. cellulosae and C. bovis and liver for C. taiwanensis. While the prepatent periods of these three species were 60-70 days, 60-75 days and 28 days respectively. Most C. cellulosae and a few for C. bovis and C. taiwanensis survive in pig, while most C. bovis and a few for C. taiwanensis survive in cattle. In rodent, all three species have a long life. C. cellulosae and C. bovis migrate through blood and lymph vessels to the small intestinal wall and then to the body muscles while C. taiwanensis migrate through blood vessels to the small intestinal wall and then to the liver. The minimal effective dosage of praziquantel against cysticercosis should be 100 mg/kg daily for three consecutive days.
RESUMEN
A retrospective quantitative radiographic analysis determined the effect of graft material and smoking status on the maintenance of graft height over 3 years. Analysis of variance models with planned comparison were constructed to compare mean graft change by (1) graft material and (2) smoking status. Maintenance of bone height was significantly greater in intraoral autogenous grafts versus allografts (P < .05). The effect of smoking on implant loss revealed a significant difference in implant survival (P < .05). Autogenous bone generally resulted in a more favorable outcome over a 3-year period. Smoking adversely impacted implant survival in sinus grafts.
Asunto(s)
Aumento de la Cresta Alveolar/métodos , Trasplante Óseo/diagnóstico por imagen , Implantación Dental Endoósea/métodos , Implantes Dentales , Maxilar/diagnóstico por imagen , Seno Maxilar/diagnóstico por imagen , Análisis de Varianza , Sustitutos de Huesos/uso terapéutico , Trasplante Óseo/métodos , Conferencias de Consenso como Asunto , Bases de Datos como Asunto , Fracaso de la Restauración Dental , Estudios de Seguimiento , Supervivencia de Injerto , Humanos , Maxilar/cirugía , Seno Maxilar/cirugía , Radiografía Panorámica , Estudios Retrospectivos , Fumar , Análisis de Supervivencia , Trasplante Autólogo , Trasplante Homólogo , Resultado del TratamientoRESUMEN
We analyzed our clinical results in 48 patients (40 men) treated during 1990-1993 with free vascularized bone-graft reconstruction for bone defects, the follow-up being an average 6 (5-8) years. The bone defects were located in the femur (10), tibia (32), humerus (2), and forearm (4). We performed 41 fibula transfers, 4 iliac transfers, and 3 rib transfers in these patients. 3 patients required early revision surgery due to venous thrombosis. The average time needed for radiographic bone union was 4.2 months. Bone transfers to the lower extremity showed significantly more hypertrophy than those in the upper extremity. The functional outcome was good in 43 patients.
Asunto(s)
Fracturas del Fémur/cirugía , Peroné/trasplante , Traumatismos del Antebrazo/cirugía , Fracturas Abiertas/cirugía , Fracturas del Húmero/cirugía , Ilion/trasplante , Osteomielitis/cirugía , Costillas/trasplante , Colgajos Quirúrgicos , Fracturas de la Tibia/cirugía , Adolescente , Adulto , Femenino , Fracturas del Fémur/diagnóstico por imagen , Estudios de Seguimiento , Traumatismos del Antebrazo/diagnóstico por imagen , Curación de Fractura , Fracturas Abiertas/diagnóstico por imagen , Humanos , Fracturas del Húmero/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Osteomielitis/diagnóstico por imagen , Radiografía , Reoperación , Colgajos Quirúrgicos/efectos adversos , Fracturas de la Tibia/diagnóstico por imagen , Factores de Tiempo , Resultado del Tratamiento , Trombosis de la Vena/etiología , Trombosis de la Vena/cirugíaRESUMEN
Cadmium (Cd), a human carcinogen, can induce apoptosis in various cell types. Three major mitogen-activated protein kinases (MAPKs), c-JUN N-terminal kinase (JNK), p38 and extracellular signal-regulated kinase (ERK), have been shown to regulate apoptosis. In this study we explore the ability of Cd to activate JNK, p38 and ERK, including their effects on Cd-mediated growth inhibition and apoptosis in a human non-small cell lung carcinoma cell line, CL3. The kinase activity of JNK was induced dose-dependently by 30-160 microM CdCl(2). High cytotoxic doses of Cd (130-160 microM) markedly activated p38, but low Cd doses did not. Conversely, the activities of ERK1 and ERK2 were decreased by low cytotoxic doses of Cd (=80 microM) and moderately activated by high Cd doses. Low cytotoxic doses of Cd transiently activated JNK and simultaneously reduced ERK activity, whereas high cytotoxic doses of Cd persistently activated JNK and p38. PD98059, an inhibitor of ERK upstream activators MAPK kinase (MKK) 1 and MKK2, greatly enhanced cytotoxicity and apoptosis in cells treated with low Cd doses. In contrast, SB202190, an inhibitor of p38, decreased the cytotoxicity and apoptosis induced by high Cd doses. Transient expression of a dominant negative form of JNK1, but not that of JNK2, significantly increased the viability and prevented apoptosis of Cd-treated cells. However, expression of wild-type JNK1 did not affect viability and apoptosis of Cd-treated cells. Transfection of wild-type JNK2 or p38 enhanced apoptosis of cells exposed to low Cd doses but did not affect those exposed to high Cd doses. The JNK activity stimulated by low Cd doses was partially suppressed by expression of a dominant negative form of MKK7, but not a dominant negative form of MKK4, indicating that MKK7 is involved in JNK activation by Cd. Together, the results of this study suggest that JNK and p38 cooperatively participate in apoptosis induced by Cd and that the decreased ERK signal induced by low Cd doses contributes to growth inhibition or apoptosis.
Asunto(s)
Apoptosis/efectos de los fármacos , Cadmio/toxicidad , Inhibidores de Crecimiento/toxicidad , Proteínas Quinasas JNK Activadas por Mitógenos , MAP Quinasa Quinasa 4 , Quinasas de Proteína Quinasa Activadas por Mitógenos/fisiología , Proteínas Quinasas Activadas por Mitógenos/fisiología , Adenocarcinoma/enzimología , Adenocarcinoma/patología , Apoptosis/fisiología , División Celular/efectos de los fármacos , División Celular/fisiología , Supervivencia Celular/efectos de los fármacos , ADN de Neoplasias/metabolismo , Activación Enzimática/efectos de los fármacos , Activadores de Enzimas , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Genes jun , Humanos , Neoplasias Pulmonares/enzimología , Neoplasias Pulmonares/patología , MAP Quinasa Quinasa 7 , Masculino , Persona de Mediana Edad , Quinasas de Proteína Quinasa Activadas por Mitógenos/genética , Quinasas de Proteína Quinasa Activadas por Mitógenos/metabolismo , Proteínas Quinasas Activadas por Mitógenos/metabolismo , Proteínas Proto-Oncogénicas c-jun/biosíntesis , Proteínas Proto-Oncogénicas c-jun/genética , Factor de Transcripción AP-1/metabolismo , Transfección , Células Tumorales Cultivadas , Proteínas Quinasas p38 Activadas por MitógenosRESUMEN
Although oncospheres of Taenia saginata asiatica can develop into cysticerci in immunodeficiency, immunosuppressed, and normal mice, no detailed information on the development features of these cysticerci from SCID mice is available. In the present study, the tumor-like cyst was found in the subcutaneous tissues of each of 10 SCID mice after 38-244 days inoculation with 39,000 oncospheres of T. s. asiatica. These cysts weighed 2.0-9.6 gm and were 1.5-4.3 cm in diameter. The number of cysticerci were collected from these cysts ranged from 125 to 1,794 and the cysticercus recovery rate from 0.3% to 4.6%. All cysticerci were viable with a diameter of 1-6 mm and 9 abnormal ones each with 2 evaginated protoscoleces were also found. The mean length and width of scolex, protoscolex, and bladder were 477 x 558, 756 x 727, and 1,586 x 1,615 microns, respectively. The diameters of suckers and rostellum were 220 microns and 70 microns, respectively. All cysticerci had two rows of rostellar hooks. These findings suggest that the SCID mouse model can be employed as a tool for long-term maintenance of the biological materials for advanced studies of immunodiagnosis, vaccine development, and evaluation of cestocidal drugs which would be most benefit for the good health of the livestocks.
Asunto(s)
Cisticercosis/parasitología , Cysticercus/aislamiento & purificación , Modelos Animales de Enfermedad , Animales , Cysticercus/anatomía & histología , Ratones , Ratones SCID , Factores de TiempoRESUMEN
C(60), vitamin E, and three C(60) derivatives (polar 1 and water-soluble C(3)/D(3)C(60)s) were examined for their antioxidant effects on prevention of lipid peroxidation induced by superoxide and hydroxyl radicals. The protection effect on lipid peroxidation was found to be in the sequence: C(60) >/= vitamin E > 1 > none, for liposoluble antioxidants, and C(3)C(60) >> D(3)C(60) > none, for water-soluble ones. Fluorescence quenching of PyCH(2)COOH (Py = pyrene) by both C(3)- and D(3)C(60)s shows that the Stern-Volmer constant, K(SV), is about the same for both quenchers in aqueous solution. Upon addition of liposomes, the fluorescence quenching becomes more efficient: 5-fold higher in K(SV) for C(3)C(60) than for D(3)C(60). When Py(CH(2))(n)()COOH (n = 1, 3, 5, 9, or 15) was incorporated in lipid membranes, the K(SV)s all were small and nearly equal for D(3)C(60) but were quite large and different for C(3)C(60) with the sequence: n = 1 < 3 < 5 < 9 < 15. The better protection effect of C(3)C(60) on lipid peroxidation than that of D(3)C(60) is attributed to its stronger interaction with membranes. Overall, the antioxidation abilities of the compounds examined were rationalized in terms of the number of reactive sites, the location of antioxidant in lipid membranes, and the strength of interactions between antioxidants and membranes.
Asunto(s)
Antioxidantes/química , Carbono/química , Fulerenos , Peroxidación de Lípido , Espectroscopía de Resonancia por Spin del Electrón , Fluorescencia , Radical Hidroxilo , Liposomas , Solubilidad , Relación Estructura-Actividad , Superóxidos , Vitamina E/química , AguaRESUMEN
Normal and immunosuppressed mice were infected with oncospheres of Taenia saginata asiatica and T. solium. Although normal ICR mice were not susceptible to these two parasites, cysticerci were recovered from the immunosuppressed ones following venous injection. For T. s. asiatica, immunosuppressed ICR mice had an infection rate of 12.5% and six cysticerci of this parasite were recovered from three males. After injection of T. solium oncospheres, a high infection rate of 57% was obtained and 23 cysticerci were collected from 13 male immunosuppressed ICR mice. The immunosuppressed C57 mice had the highest infection rate (100%) and cysticercus recovery rate (2.4%) for T. solium. The infection rate and cysticercus recovery rate in six normal C57 mice were 40% and 3% respectively. The immunosuppressed ICR, Balb/c and C3H mice were also susceptible to T. s. asiatica.
Asunto(s)
Tolerancia Inmunológica , Taenia/crecimiento & desarrollo , Teniasis/inmunología , Animales , Susceptibilidad a Enfermedades , Femenino , Humanos , Masculino , Ratones , Ratones Endogámicos BALB C , Ratones Endogámicos C3H , Ratones Endogámicos C57BL , Ratones Endogámicos ICR , Especificidad de la Especie , Taenia/aislamiento & purificación , Teniasis/parasitologíaRESUMEN
This paper reviews the principles and the types of diagnostic tests for periodontal disease. The relevance of the tests, such as sensitivity and specificity, and the consequences after the tests are discussed. Several clinical and laboratory tests such as DNA probes; test for the presence of aspartate aminotransferase or collagenase in gingival crevicular fluid (GCF); and the genetic test for the patients having higher risk to the disease are presented. These tests can serve as the adjunctive tools for traditional periodontal examinations. Understanding and properly utilizing these diagnostic tests would enhance treatment and provide better prognosis for patients.
Asunto(s)
Enfermedades Periodontales/diagnóstico , Enfermedades Periodontales/microbiología , Aspartato Aminotransferasas/metabolismo , Técnicas de Tipificación Bacteriana , Colagenasas/metabolismo , ADN Bacteriano/análisis , Líquido del Surco Gingival/enzimología , Humanos , Interleucina-1/genética , Pronóstico , Reproducibilidad de los Resultados , Sensibilidad y EspecificidadRESUMEN
This paper reviews and compares the strengths and weaknesses of radiographic techniques including periapical, occlusal, panoramic, direct digital, motion tomography, and computed tomography. Practical considerations for each method, including availability and accessibility, are discussed. To date, digital subtraction radiography is the most versatile and sensitive method for measuring boss loss. It can detect both bone height and bone mass changes on root-form or blade-form dental implants. Criteria for implant success have changed substantially over the past two decades. In clinical trials of dental implants, the outcomes require certain radiographic analyses to address the hypothesis or clinical question adequately. Radiographic methods best suited to the objective assessment of implant performance and hypothesis were reviewed.
Asunto(s)
Proceso Alveolar/diagnóstico por imagen , Implantación Dental Endoósea , Implantes Dentales , Pérdida de Hueso Alveolar/diagnóstico por imagen , Humanos , Intensificación de Imagen Radiográfica , Radiografía de Mordida Lateral , Radiografía Dental Digital , Radiografía Panorámica , Técnica de Sustracción , Tomografía por Rayos X , Tomografía Computarizada por Rayos XRESUMEN
In order to determine whether Taenia solium can be maintained in the laboratory using rodents as definitive hosts, six nude rats, 20 immunosuppressed Mongolian gerbils and 20 immunosuppressed Syrian hamsters were each inoculated through a stomach tube with three cysticerci recovered from SCID mice. No adult worms of T. solium were found in the intestinal tract of any of these 46 rodents. In addition, five immunosuppressed Syrian hamsters were fed with the same number of cysticerci enclosed in rodent muscles from SCID mice. Two of these hamsters were found to be infected 40 days post-infection, each harbouring a sexually developed worm in the intestinal tract. Although no eggs were produced, prepatent infections may be possible if a longer time was allowed for worm development. Moreover, the maintenance of the life cycle of T. solium in the laboratory using the rodent model can be established.
Asunto(s)
Mesocricetus/parasitología , Maduración Sexual , Taenia/crecimiento & desarrollo , Teniasis/parasitología , Animales , Cricetinae , Cysticercus/crecimiento & desarrollo , Modelos Animales de Enfermedad , Susceptibilidad a Enfermedades , Femenino , Gerbillinae/parasitología , Humanos , Huésped Inmunocomprometido , Masculino , Ratones , Ratones SCID/parasitología , Ratas , Ratas Desnudas/parasitología , Taenia/anatomía & histología , Teniasis/inmunologíaRESUMEN
Two patients with giant-cell tumors of the patella are presented in this report. Both patients were young females who were noted to have had nonspecific anterior knee pain and mild swelling of 1 to 12 months' duration prior to admission to our hospital. Local tenderness over the peripatellar area and slight limitation of full flexion were noted during physical examination. The radiographic presentation of each patella appeared as an expansile and lytic lesion with a thin cortex, without evidence of intra-articular involvement. Chest radiography and routine laboratory examination results were normal. After biopsy, intralesional curettage with phenol cauterization and allograft reconstruction was the preferred treatment in these two patients, with both tumors considered to be stage 2 according to Enneking's staging system. Following surgery, range of motion exercise was started after 6 weeks of immobilization with a long leg splint. Both patients regained full range of motion and were pain free. Radiographically, bone remodeling without evidence of recurrence was noted in both patients 2 years postoperatively.
Asunto(s)
Neoplasias Óseas/cirugía , Tumores de Células Gigantes/cirugía , Rótula , Adolescente , Adulto , Neoplasias Óseas/diagnóstico por imagen , Neoplasias Óseas/patología , Trasplante Óseo , Legrado , Femenino , Tumores de Células Gigantes/diagnóstico por imagen , Tumores de Células Gigantes/patología , Humanos , Radiografía , Trasplante HomólogoRESUMEN
The efficiencies of an enzyme method and the sodium hypochlorite method in hatching eggs of Taenia solium (Henan strain) were compared. The viability of the hatched oncospheres was determined by staining with trypan blue. For the former method, the hatching rate and viability percentage were 85.7% and 79.7%, respectively. The corresponding figures for the latter method were 97.9% and 86.7%, respectively. These findings indicate that the sodium hypochlorite method is a simple, efficient and practical method for hatching eggs of Taenia solium.
Asunto(s)
Óvulo/crecimiento & desarrollo , Parasitología/métodos , Taenia/crecimiento & desarrollo , Animales , Cisticercosis/parasitología , Humanos , Teniasis/parasitologíaRESUMEN
The goal of this study was to assess risk factors for dental implant failure. Eighty-three implants were placed in thirty patients who were followed for three years using digital subtraction radiography. The following putative risk factors for implant failure were employed in the model: age, sex, implant length, implant position, implant surface coating, smoking habit, and presence of infection. Implant failure was defined as progressive bone loss compromising the implant. We found that the presence of infection (P < 0.001) and absence of HA coating (P < 0.001) were the primary factors associated with early implant failure.
Asunto(s)
Implantes Dentales , Fracaso de la Restauración Dental , Adolescente , Adulto , Anciano , Distribución de Chi-Cuadrado , Implantes Dentales/estadística & datos numéricos , Femenino , Estudios de Seguimiento , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Radiografía Dental Digital , Medición de Riesgo , Factores de Riesgo , Factores de TiempoRESUMEN
This article describes a study of the efficacy of the non-steroidal anti-inflammatory drug flurbiprofen in maintaining alveolar bone around mandibular root-form dental implants. The preliminary results indicate that, in appropriate doses, flurbiprofen may spare bone around such implants.
Asunto(s)
Pérdida de Hueso Alveolar/prevención & control , Implantes Dentales , Flurbiprofeno/administración & dosificación , Oseointegración/efectos de los fármacos , Adolescente , Adulto , Anciano , Pérdida de Hueso Alveolar/diagnóstico por imagen , Implantación Dental Endoósea , Relación Dosis-Respuesta a Droga , Método Doble Ciego , Femenino , Flurbiprofeno/farmacología , Flurbiprofeno/uso terapéutico , Humanos , Masculino , Persona de Mediana Edad , Intensificación de Imagen Radiográfica , Cicatrización de Heridas/efectos de los fármacosAsunto(s)
Pérdida de Hueso Alveolar/diagnóstico por imagen , Arcada Edéntula/diagnóstico por imagen , Radiografía Dental/métodos , Implantación Dental Endoósea , Humanos , Planificación de Atención al Paciente , Intensificación de Imagen Radiográfica , Radiografía Dental/instrumentación , Radiografía Dental Digital , Técnica de Sustracción , Película para Rayos XRESUMEN
In order to determine the geographical distribution of Ancylostoma duodenale and Necator americanus in Taiwan, 2,759 fresh stool samples were collected from 5th-grade school children of both sexes among 43 preliminary schools in 16 counties, and then examined by means of the modified test-tube filter-paper cultivation method for identification of the filariform larvae of hookworm. Both species of A. duodenale and N. americanus are widespread in Taiwan. The overall infection rate was 20.00%. The rate of A. duodenale, N. americanaus and mixed infection of both species was 9.85%, and 7.75% and 2.39% respectively. Geographically, N. americanus (12.64%) predominated over A. duodenale (5.43%) in the north (Ilan, Taipei, Taoyuan, Hsinchu and Miaoli) and the east (Taitung) areas. On the contrary, A. duodenale (13.40%) predominated over N. americanus (5.63%) in the central (Nantou, Taichung, Changhua and Yunlin), the south (Chiayi, Tainan, Kaohsiung and Pingtung) and the east (Hualien) areas. On the other hand, the rate of infection on the offshore island (Penghu) was much lower (1.19%) than the others (21.10-21.29%).