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1.
BMC Med Educ ; 23(1): 505, 2023 Jul 13.
Artículo en Inglés | MEDLINE | ID: mdl-37442970

RESUMEN

BACKGROUND: Asynchronous e-learning has become the mainstream choice since the transformation of learning formats by the coronavirus disease-19 pandemic. This scoping review aimed to examine the technologies used in asynchronous e-learning for the continuing education of clinical nurses and their modes of delivery and effectiveness. METHODS: This scoping review covered the period between 2011 and 2023. Six databases were searched for relevant studies following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis extension for Scoping Reviews (PRISMA-ScR) protocol. RESULTS: Sixty articles met the inclusion criteria. There was a noticeable trend toward using diverse technology-enabled and enhanced training (TEET) options after 2017. The enabling technological approaches, such as interactive online modules (25 articles) and video modules (25 articles), are described in the articles. The most commonly used enhancing technologies were scenario-based learning (nine articles), resource access (eight articles), computer simulation or virtual reality (three articles), and gamification (three articles). Among the outcomes, knowledge acquisition was the most commonly examined outcome (41 articles). CONCLUSIONS: Notably, many interactive TEET modules were used in asynchronous e-learning. There were few studies on gamification, computer simulation or virtual reality, and scenario-based learning (techniques to enhance intrinsic motivation further). However, the adoption of asynchronous e-learning with advanced TEET options is anticipated to increase in the future. Therefore, objective outcome measures are required to determine the effects of such learning methods on knowledge acquisition and behavioral changes.


Asunto(s)
COVID-19 , Instrucción por Computador , Enfermeras y Enfermeros , Humanos , Simulación por Computador , COVID-19/epidemiología , Educación Continua
2.
Int J Clin Oncol ; 27(2): 281-300, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-35022887

RESUMEN

The Japan Society of Clinical Oncology (JSCO) published the "JSCO Clinical Practice Guidelines 2017 for Fertility Preservation in Childhood, Adolescent, and Young Adult Cancer Patients" in 2017. This was the first guideline in cancer reproductive medicine in Japan. In the field of cancer reproductive medicine, close cooperation between an oncologist and a physician for reproductive medicine is important from before treatment initiation until long after treatment. The guideline takes into consideration disease specificity and provides opinions from the perspective of oncologists and specialists in reproductive medicine that are in line with the current state of the Japanese medical system. It is intended to serve as a reference for medical staff in both fields regarding the availability of fertility preservation therapy before the start of cancer treatment. Appropriate use of this guideline makes it easier to determine whether fertility preservation therapy is feasible and, ultimately, to improve survivorship in childhood, adolescent, and young adult cancer patients. In this article (Part 2), we describe details by organ/system and also for pediatric cancer.


Asunto(s)
Preservación de la Fertilidad , Neoplasias , Oncólogos , Adolescente , Niño , Humanos , Japón , Oncología Médica , Neoplasias/terapia , Adulto Joven
3.
Int J Clin Oncol ; 27(2): 265-280, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34973107

RESUMEN

In 2017, the Japan Society of Clinical Oncology (JSCO) published the JSCO Clinical Practice Guidelines 2017 for Fertility Preservation in Childhood, Adolescent, and Young Adult Cancer Patients. These were the first Japanese guidelines to address issues of oncofertility. In this field of medicine, sustained close cooperation between oncologists and reproductive specialists is essential from the diagnosis of cancer until many years after completion of cancer treatment. These JSCO guidelines were intended to guide multidisciplinary medical staff in considering the availability of fertility preservation options and to help them decide whether to provide fertility preservation to childhood, adolescent, and young adult cancer patients before treatment starts, with the ultimate goal of improving patient survivorship. The guidelines are presented as Parts 1 and 2. This article (Part 1) summarizes the goals of the guidelines and the methods used to develop them and provides an overview of fertility preservation across all oncology areas. It includes general remarks on the basic concepts surrounding fertility preservation and explanations of the impacts of cancer treatment on gonadal function by sex and treatment modality and of the options for protecting/preserving gonadal function and makes recommendations based on 4 clinical questions. Part 2 of these guidelines provides specific recommendations on fertility preservation in 8 types of cancer (gynecologic, breast, urologic, pediatric, hematologic, bone and soft tissue, brain, and digestive).


Asunto(s)
Preservación de la Fertilidad , Neoplasias , Oncólogos , Adolescente , Niño , Femenino , Humanos , Japón , Oncología Médica , Neoplasias/terapia , Adulto Joven
4.
J Assist Reprod Genet ; 38(5): 1061-1068, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33619678

RESUMEN

PURPOSE: When rescue artificial oocyte activation (ROA) is performed on the day after intracytoplasmic sperm injection (ICSI) or later, embryonic development is poor and seldom results in live births. The efficacy of an early ROA after ICSI is unclear. Is early ROA effective in rescuing unfertilized oocytes that have not undergone second polar body extrusion several hours after ICSI? METHODS: We performed retrospective cohort study between October 2016 and September 2019, targeting 2891 oocytes in 843 cycles when ICSI was performed. We performed ROA with calcium ionophore on 395 of the 475 oocytes with no second polar extrusion 2.5-6 h after ICSI. RESULTS: The normal fertilization rate of ROA oocytes was significantly higher than non-ROA oocytes (65.8% vs 6.7%, P < 0.001). The blastocyst development rate in ROA oocytes was significantly lower than spontaneously activated oocytes (48.9% vs 67.2%, P < 0.001). The ROA oocyte implantation rate did not significantly differ from the spontaneously activated oocytes (36.0% vs 41.2%). We observed no differences in the implantation rates and blastocyst development rates over the 2.5-6 h from ICSI until ROA. CONCLUSION: Early ROA is effective, and the optimal timing appears to be 2.5-6 h after ICSI.


Asunto(s)
Desarrollo Embrionario/genética , Fertilización In Vitro , Nacimiento Vivo/epidemiología , Oocitos/crecimiento & desarrollo , Blastocisto/efectos de los fármacos , Ionóforos de Calcio/farmacología , Implantación del Embrión/genética , Transferencia de Embrión/tendencias , Desarrollo Embrionario/efectos de los fármacos , Femenino , Humanos , Masculino , Oocitos/efectos de los fármacos , Cuerpos Polares/efectos de los fármacos , Cuerpos Polares/metabolismo , Inyecciones de Esperma Intracitoplasmáticas/tendencias
6.
Sensors (Basel) ; 17(12)2017 Dec 19.
Artículo en Inglés | MEDLINE | ID: mdl-29257118

RESUMEN

Surface plasmon field-enhanced fluorescence microscopic observation of a live breast cancer cell was performed with a plasmonic chip. Two cell lines, MDA-MB-231 and Michigan Cancer Foundation-7 (MCF-7), were selected as breast cancer cells, with two kinds of membrane protein, epithelial cell adhesion molecule (EpCAM) and epidermal growth factor receptor (EGFR), observed in both cells. The membrane proteins are surface markers used to differentiate and classify breast cancer cells. EGFR and EpCAM were detected with Alexa Fluor® 488-labeled anti-EGFR antibody (488-EGFR) and allophycocyanin (APC)-labeled anti-EpCAM antibody (APC-EpCAM), respectively. In MDA-MB231 cells, three-fold plus or minus one and seven-fold plus or minus two brighter fluorescence of 488-EGFR were observed on the 480-nm pitch and the 400-nm pitch compared with that on a glass slide. Results show the 400-nm pitch is useful. Dual-color fluorescence of 488-EGFR and APC-EpCAM in MDA-MB231 was clearly observed with seven-fold plus or minus two and nine-fold plus or minus three, respectively, on the 400-nm pitch pattern of a plasmonic chip. Therefore, the 400-nm pitch contributed to the dual-color fluorescence enhancement for these wavelengths. An optimal grating pitch of a plasmonic chip improved a fluorescence image of membrane proteins with the help of the surface plasmon-enhanced field.


Asunto(s)
Neoplasias de la Mama , Línea Celular Tumoral , Color , Molécula de Adhesión Celular Epitelial , Receptores ErbB , Fluorescencia , Humanos
7.
Int J Cancer ; 137(4): 991-8, 2015 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-25622566

RESUMEN

Studies in circulating tumor cells (CTCs) have proceeded to be accepted as prognostic markers in several types of cancers. But they are still limited because many are mainly from enumeration of CTCs. Here, we tried to evaluate the tumorigenicity of CTCs from advanced gastric cancer patients (n = 42). Peripheral blood mononuclear cells (PBMC) from the patients were separated into CD45 negative and positive fractions and both were subcutaneously injected into immunodeficient mice. Within 5 months nine tumor-like-structures from six patients but not from healthy volunteers were established. They were durable for passages and all had been confirmed human origin. Eight of the nine tumor-like-structures were from nonauthorized CTC containing cells expressing CD45 and B-cell markers. On the contrary, one of them was developed from CD45(-) PBMC fraction of a patient with bone marrow metastasis reflecting authorized CTCs. Histopathology showed common features with that of original gastric tumor. The cells isolated from the tumor-like-structure expressed EpCAM and CEA further supporting they were from the original tumor. Moreover the cells were CD44 positive to varying degree and a limiting dilution study showed that the CD44(+/high) fraction had tumorigenicity. The CD44 was dominantly in the form of CD44 variant 8-10. The CD44(+/high) cells had higher expression of the glutamate/cysteine transporter xCT compared with the CD44(-/low) cells. Our results showed the existence of tumor-initiating cells in blood of advanced gastric cancer patients and they could be a therapeutic target and prospective tool for further investigations.


Asunto(s)
Células Neoplásicas Circulantes/patología , Pronóstico , Neoplasias Gástricas/sangre , Animales , Antígenos de Neoplasias/biosíntesis , Moléculas de Adhesión Celular/biosíntesis , Linaje de la Célula , Molécula de Adhesión Celular Epitelial , Regulación Neoplásica de la Expresión Génica , Xenoinjertos , Humanos , Receptores de Hialuranos/biosíntesis , Antígenos Comunes de Leucocito/biosíntesis , Antígenos Comunes de Leucocito/sangre , Ratones , Células Neoplásicas Circulantes/metabolismo , Neoplasias Gástricas/patología
8.
Int J Clin Oncol ; 20(6): 1140-6, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25947545

RESUMEN

BACKGROUND: The prognosis for most patients with stage IV colorectal cancer (CRC) and multi-organ metastases is poor. However, little information is currently available on prognostic factors in these patients. The aim of this study was to identify predictors of a good prognosis in this patient group. METHODS: This was a single-center retrospective study in which we examined the relationship between patient characteristics and prognosis in 161 stage IV CRC patients with indications for first-line systemic chemotherapy. Cox proportional-hazards models were used to compute hazard ratios (HR) for death, adjusted for clinical and pathological characteristics. RESULTS: Of the 161 patients recruited to the study, 83 had single-organ and 78 had multi-organ metastases. Median survival time was significantly shorter in patients with multi-organ metastases than in those with single-organ metastases (19.2 vs. 42.0 months, respectively; log-rank, P < 0.001). There was no significant difference in survival between patients with metastases in two versus three or more organs (log-rank; P = 0.368). According to univariate analysis, primary tumor sites in the left side of the colon and in the rectum, a pretreatment carcinoembryonic antigen concentration of >50 ng/mL, a well-/moderately differentiated tumor, and R0 resection of metastatic lesions were associated with better overall survival. According to multivariate analysis, left-sided location of the primary tumor [HR 0.414, 95 % confidence interval (CI) 0.216-0.815; P = 0.011] and R0 resection of metastatic lesions (HR 0.247, 95 % CI 0.04 0-0.834; P = 0.021) were independently associated with good prognosis. CONCLUSIONS: Our results indicate that the site of the primary tumor in the left side of the colon and in the rectum and R0 resection of metastatic lesions are predictors of a good prognosis in patients with stage IV CRC and multi-organ metastases.


Asunto(s)
Colon Descendente/patología , Neoplasias del Colon/patología , Neoplasias del Recto/patología , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/uso terapéutico , Antígeno Carcinoembrionario/sangre , Neoplasias del Colon/sangre , Neoplasias del Colon/mortalidad , Neoplasias del Colon/terapia , Femenino , Humanos , Masculino , Metastasectomía , Persona de Mediana Edad , Clasificación del Tumor , Metástasis de la Neoplasia , Estadificación de Neoplasias , Neoplasia Residual , Valor Predictivo de las Pruebas , Pronóstico , Modelos de Riesgos Proporcionales , Neoplasias del Recto/sangre , Neoplasias del Recto/mortalidad , Neoplasias del Recto/terapia , Estudios Retrospectivos , Tasa de Supervivencia
9.
Kyobu Geka ; 68(9): 793-6, 2015 Aug.
Artículo en Japonés | MEDLINE | ID: mdl-26329716

RESUMEN

We report a 79-year-old woman with collision cancer in the right middle lobe of the lung. She had a persistent abnormal shadow after treatment for pneumonia pointed out in right middle lung field on chest radiogram, and referred to our hospital. On examination, the chest computed tomography showed a pure-solid mass of 7.6 cm in diameter in right middle lobe of the lung which was thought to invade the superior pulmonary vein. She underwent a successful right pneumonecomty, and the postoperative course was uneventful. The tumor proved to be a collision cancer consisting of poor differentiated squamous cell carcinoma and invasive adenocarcinoma, lepidic predominanat by pathological examination. Epidermal growth factor receptor mutations (L858R) were found in both squamous cell carcinoma and adenocarcinoma of the tumor, possibly suggesting the same origin of both histological types.

10.
Am J Physiol Regul Integr Comp Physiol ; 307(5): R525-37, 2014 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-24965791

RESUMEN

The kidney of marine teleosts is the major site of Mg(2+) excretion and produces urine with a high Mg(2+) concentration. However, the transporters involved in Mg(2+) excretion are poorly understood. The cyclin M (Cnnm; also known as ancient conserved domain protein) family comprises membrane proteins homologous to the bacterial Mg(2+) and Co(2+) efflux protein, CorC. To understand the molecular mechanism of Mg(2+) homeostasis in marine teleosts, we analyzed the expression of the Cnnm family genes in the seawater (SW) pufferfish, torafugu (Takifugu rubripes), and the closely related euryhaline species, mefugu (Takifugu obscurus). Database mining and phylogenetic analysis indicated that the Takifugu genome contains six members of the Cnnm family: two orthologs of Cnnm1, one of Cnnm2, one of Cnnm3, and two of Cnnm4. RT-PCR analyses indicated that Cnnm2, Cnnm3, and Cnnm4a are expressed in the kidney, whereas other members are mainly expressed in the brain. Renal expression of Cnnm3 was upregulated in SW mefugu, whereas renal expression of Cnnm2 was upregulated in freshwater (FW) mefugu. No significant difference was observed in renal expression of Cnnm4a between SW and FW mefugu. In situ hybridization and immunohistochemical analyses of the SW mefugu kidney revealed that Cnnm3 is expressed in the proximal tubule, and its product localizes to the lateral membrane. When Cnnm3 was expressed in Xenopus laevis oocytes, whole cellular Mg(2+) content and free intracellular Mg(2+) activity significantly decreased. These results suggest that Cnnm3 is involved in body fluid Mg(2+) homeostasis in marine teleosts.


Asunto(s)
Ciclinas/metabolismo , Túbulos Renales Proximales/metabolismo , Sistema de la Línea Lateral/metabolismo , Magnesio/metabolismo , Takifugu/fisiología , Secuencia de Aminoácidos , Animales , Ciclinas/genética , Genoma , Homeostasis/fisiología , Datos de Secuencia Molecular , Filogenia
11.
Malar J ; 13: 373, 2014 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-25239687

RESUMEN

BACKGROUND: Diagnostic techniques based on PCR for the detection of Plasmodium DNA can be highly sensitive and specific. The vast majority of these techniques rely, however, on the invasive sampling of blood from infected hosts. There is, currently, considerable interest in the possibility of using body fluids other than blood as sources of parasite DNA for PCR diagnosis. METHODS: Urine and faeces were obtained from a Plasmodium knowlesi infected-Japanese macaque (Macaca fuscata) over the course of an experimentally induced infection. P. knowlesi DNA (PkDNA) extracted from urine and faeces were monitored by nested PCR targeting the P. knowlesi specific cytochrome b (cytb) gene. RESULTS: Urinary PkDNA was detected on day 2, but was not amplified using DNA templates extracted from the samples on day 4, day 5 and day 6. Subsequently, urinary PkDNA was detected from day 7 until day 11, and from day 20 until day 30. PkDNA in faeces was detected from day 7 until day 11, and from day 20 until day 37. Moreover, real-time quantitative PCR showed a remarkable increase in the amount of urinary PkDNA following anti-malarial treatment. This might have been due to the release of a large amount of PkDNA from the degraded parasites as a result of the anti-malarial treatment, leading to excretion of PkDNA in the urine. CONCLUSIONS: The cytb-PCR system using urine and faecal samples is of potential use in molecular epidemiological surveys of malaria. In particular, monkey faecal samples could be useful for the detection of zoonotic primate malaria in its natural hosts.


Asunto(s)
ADN Protozoario/orina , Heces/química , Macaca/orina , Malaria/parasitología , Malaria/orina , Plasmodium knowlesi/genética , Animales , ADN Protozoario/análisis , Modelos Animales de Enfermedad , Femenino , Malaria/metabolismo , Malaria/fisiopatología , Microscopía , Técnicas de Diagnóstico Molecular , Parasitología , Reacción en Cadena de la Polimerasa
12.
Drug Discov Ther ; 17(6): 396-403, 2024 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-38105007

RESUMEN

The package inserts of prescription drugs provide essential information for the proper administration of pharmacotherapy. The incidence of adverse reactions for several drugs is known to be higher in women than in men. However, no studies have examined whether information on gender differences is included in Japanese package inserts. Therefore, this study investigated information on gender differences in the package inserts of Japanese prescription drugs, using the drug information database JAMES provided by the Medical Information System Development Center and the Japan Pharmaceutical Information Center. Non-proprietary names of prescription drugs were yielded 1,679 in Japan. Of the 1,679 ingredients in package inserts of prescription drugs, 76 (4.5%) included information on gender differences. The number of inserts that contained information on gender differences in the "DOSAGE AND ADMINISTRATION," "ADVERSE REACTIONS," and "PHARMACOKINETICS" sections was 3, 16, and 62, respectively. Furthermore, in the "ADVERSE REACTIONS" section, 15 of the 16 inserts mentioned a higher frequency of adverse reactions in women compared with men. Importantly, most of the inserts with information on gender differences in the "PHARMACOKINETICS" section mentioned a higher area under the curve for women than for men. Most of the package inserts of prescription drugs with information on gender differences provide useful information aimed at preventing risks in women. However, there is an extreme lack of information on gender differences in the package inserts of prescription drugs in Japan, and we consider enhancing information on gender difference as an urgent issue.


Asunto(s)
Medicamentos bajo Prescripción , Femenino , Humanos , Medicamentos bajo Prescripción/efectos adversos , Japón , Factores Sexuales , Etiquetado de Productos , Prescripciones
13.
Arch Public Health ; 82(1): 71, 2024 May 14.
Artículo en Inglés | MEDLINE | ID: mdl-38745251

RESUMEN

BACKGROUND: The early detection and prevention of many cancers is possible. Therefore, public awareness about cancer risk factors and warning signs must be increased to ensure early diagnosis. Although Japan has implemented mandatory cancer education in junior high and high schools, few studies have evaluated teachers' cancer awareness. This study aimed to determine Japanese junior high and high school teachers' awareness of cancer and related factors. METHODS: This cross-sectional study obtained data through an online questionnaire survey using questions from the Cancer Awareness Measure (CAM) developed by Cancer Research UK. Thirty items were selected from three CAM modules: cancer risk factors, cancer warning signs, and barriers to seeking help. Descriptive statistics were used for socio-demografic data and CAM module questions. The χ2 test was performed on the relationship between cancer awareness and socio-demographic data. Multiple logistic regression analysis was used to identify factors influencing cancer awareness. RESULTS: Respondents included 316 junior high school and 463 high school teachers (541 men; 238 women; average age = 48.2 years; average teaching experience = 23.5 years). An average of 5.41 out of 11 cancer risk factors were recognized. More than 70% of teachers recognized smoking, exposure to another person's cigarette smoke, and having a close relative with cancer as risk factors. On average, 4.52 out of 9 cancer warning signs were recognized. More than 50% of teachers recognized the warning signs of unexplained lump or swelling, unexplained weight loss, and unexplained bleeding. Barriers to seeking help had a low average score of 4.51 out of 20. However, the most commonly recognized "barriers to seeking help" were "too busy to make time," "difficult to make an appointment," "worried about what the doctor might find," and "too scared." Moreover, the common factors that affected awareness of cancer risk factors and cancer warning signs were gender and cancer experience of relatives. Factors that affected awareness of "barriers to seeking help" were "participation in cancer-related workshops," age, gender, and cancer experience of relatives. CONCLUSIONS: Cancer awareness education should consider interventions that can improve knowledge of the symptoms and signs related to cancer without increasing the awareness of barriers to seeking help.

14.
Medicine (Baltimore) ; 103(27): e38734, 2024 Jul 05.
Artículo en Inglés | MEDLINE | ID: mdl-38968528

RESUMEN

Cancer is a common health problem worldwide. Early cancer education for adolescents and young adults (AYAs) is important for the prevention or early detection of cancer. In this questionnaire-based cross-sectional study, we examined the cancer awareness among parents of AYAs. Japanese adults with junior or senior high school children were included in this study. The cancer awareness measure (CAM) was used to assess cancer awareness, and the survey was conducted in December 2021. Warning signs, barriers to seeking help, and risk factors were surveyed using an online anonymous questionnaire. In addition, personal information, the presence of other cancer survivors, attendance at cancer seminars, conversations with children about cancer, interest in cancer education for children, and previous cancer screening were surveyed. A t-test or Spearman correlation coefficient was used to compare the total CAM scores for the individual factors. The relationship between cancer-screening behavior and individual factors was analyzed using the χ2 test. In addition, multiple regression analysis or logistic regression analysis was used to identify the factors influencing cancer awareness or cancer-screening behavior. Responses were obtained from the 612 participants. The mean CAM score was 3.7 for cancer warning signs, 4.3 for barriers to seeking help, and 6.5 for risk factors. Cancer warning signs were associated with gender and the presence of a spouse, family member, or friend who had experienced cancer. Barriers to seeking help were associated with age, gender, and education, while risk factors were associated with gender, education, and conversations about cancer with children. Moreover, these scores were associated with each cancer screening behavior. Cancer awareness among Japanese adults with AYAs was influenced by gender, academic background, occupation, the presence of cancer survivors around them, and whether they had conversations about cancer with their children, as well as their cancer screening behavior.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Neoplasias , Padres , Humanos , Estudios Transversales , Masculino , Femenino , Neoplasias/psicología , Neoplasias/epidemiología , Adolescente , Adulto Joven , Adulto , Padres/psicología , Encuestas y Cuestionarios , Detección Precoz del Cáncer/psicología , Factores de Riesgo , Persona de Mediana Edad , Japón/epidemiología
15.
Sci Rep ; 14(1): 10044, 2024 05 02.
Artículo en Inglés | MEDLINE | ID: mdl-38698112

RESUMEN

Clinical studies using suspensions or sheets of human pluripotent cell-derived retinal pigment epithelial cells (hiPSC-RPE) have been conducted globally for diseases such as age-related macular degeneration. Despite being minimally invasive, cell suspension transplantation faces challenges in targeted cell delivery and frequent cell leakage. Conversely, although the RPE sheet ensures targeted delivery with correct cell polarity, it requires invasive surgery, and graft preparation is time-consuming. We previously reported hiPSC-RPE strips as a form of quick cell aggregate that allows for reliable cell delivery to the target area with minimal invasiveness. In this study, we used a microsecond pulse laser to create a local RPE ablation model in cynomolgus monkey eyes. The hiPSC-RPE strips were transplanted into the RPE-ablated and intact sites. The hiPSC-RPE strip stably survived in all transplanted monkey eyes. The expansion area of the RPE from the engrafted strip was larger at the RPE injury site than at the intact site with no tumorigenic growth. Histological observation showed a monolayer expansion of the transplanted RPE cells with the expression of MERTK apically and collagen type 4 basally. The hiPSC-RPE strip is considered a beneficial transplantation option for RPE cell therapy.


Asunto(s)
Células Madre Pluripotentes Inducidas , Macaca fascicularis , Epitelio Pigmentado de la Retina , Animales , Epitelio Pigmentado de la Retina/trasplante , Epitelio Pigmentado de la Retina/citología , Humanos , Células Madre Pluripotentes Inducidas/citología , Degeneración Macular/patología
16.
Commun Biol ; 7(1): 408, 2024 Apr 03.
Artículo en Inglés | MEDLINE | ID: mdl-38570609

RESUMEN

The regressive evolution of independent lineages often results in convergent phenotypes. Several teleost groups display secondary loss of the stomach, and four gastric genes, atp4a, atp4b, pgc, and pga2 have been co-deleted in agastric (stomachless) fish. Analyses of genotypic convergence among agastric fishes showed that four genes, slc26a9, kcne2, cldn18a, and vsig1, were co-deleted or pseudogenized in most agastric fishes of the four major groups. kcne2 and vsig1 were also deleted or pseudogenized in the agastric monotreme echidna and platypus, respectively. In the stomachs of sticklebacks, these genes are expressed in gastric gland cells or surface epithelial cells. An ohnolog of cldn18 was retained in some agastric teleosts but exhibited an increased non-synonymous substitution when compared with gastric species. These results revealed novel convergent gene losses at multiple loci among the four major groups of agastric fish, as well as a single gene loss in the echidna and platypus.


Asunto(s)
Ornitorrinco , Tachyglossidae , Animales , Filogenia , Ornitorrinco/genética , Tachyglossidae/genética , Estómago , Peces/genética
17.
J Clin Microbiol ; 51(10): 3435-8, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23884992

RESUMEN

This case of imported refractory schistosomiasis has highlighted the usefulness of cell-free parasite DNA as a diagnostic marker to assess active schistosome infection. In contrast to the rapid disappearance of ova in urine, parasite DNA remained persistent in several other specimen types even after the fourth treatment with praziquantel. This result was consistent with the presence of morphologically intact ova in bladder biopsy samples and with the corresponding symptoms.


Asunto(s)
ADN de Helmintos/aislamiento & purificación , Monitoreo de Drogas/métodos , Parasitología/métodos , Esquistosomiasis/diagnóstico , Esquistosomiasis/parasitología , Animales , Antihelmínticos/uso terapéutico , Biopsia , ADN de Helmintos/genética , Humanos , Masculino , Praziquantel/uso terapéutico , Saliva/parasitología , Schistosoma/aislamiento & purificación , Esquistosomiasis/tratamiento farmacológico , Semen/parasitología , Suero/parasitología , Vejiga Urinaria/parasitología , Orina/parasitología , Adulto Joven
18.
Am J Physiol Regul Integr Comp Physiol ; 305(4): R385-96, 2013 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-23761638

RESUMEN

The second most abundant cation in seawater (SW), Mg²âº, is present at concentrations of ~53 mM. Marine teleosts maintain plasma Mg²âº concentration at 1-2 mM by excreting Mg²âº into the urine. Urine Mg²âº concentrations of SW teleosts exceed 70 mM, most of which is secreted by the renal tubular epithelial cells. However, molecular mechanisms of the Mg²âº secretion have yet to be clarified. To identify transporters involved in Mg²âº secretion, we analyzed the expression of fish homologs of the Slc41 Mg²âº transporter family in various tissues of SW pufferfish torafugu (Takifugu rubripes) and its closely related euryhaline species mefugu (Takifugu obscurus). Takifugu genome contained five members of Slc41 genes, and only Slc41a1 was highly expressed in the kidney. Renal expression of Slc41a1 was markedly elevated when mefugu were transferred from fresh water (FW) to SW. In situ hybridization analysis and immunohistochemistry at the light and electron microscopic levels revealed that Slc41a1 is localized to vacuoles in the apical cytoplasm of the proximal tubules. These results suggest that pufferfish Slc41a1 is a Mg²âº transporter involved in renal tubular transepithelial Mg²âº secretion by mediating Mg²âº transport from the cytosol to the vacuolar lumen, and support the hypothesis that Mg²âº secretion is mediated by exocytosis of Mg²âº-rich vacuoles to the lumen.


Asunto(s)
Proteínas de Transporte de Catión/metabolismo , Proteínas de Peces/metabolismo , Túbulos Renales Proximales/metabolismo , Magnesio/metabolismo , Agua de Mar , Takifugu/metabolismo , Aclimatación , Secuencia de Aminoácidos , Animales , Células COS , Proteínas de Transporte de Catión/genética , Chlorocebus aethiops , Citosol/metabolismo , Exocitosis , Proteínas de Peces/genética , Inmunohistoquímica , Hibridación in Situ , Túbulos Renales Proximales/ultraestructura , Magnesio/sangre , Magnesio/orina , Microscopía Electrónica de Transmisión , Datos de Secuencia Molecular , Filogenia , ARN Mensajero/metabolismo , Takifugu/anatomía & histología , Takifugu/genética , Transfección , Regulación hacia Arriba , Vacuolas/metabolismo , Xenopus laevis
19.
Int J Clin Oncol ; 18(4): 689-95, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22664951

RESUMEN

BACKGROUND: There has so far been little information on the clinical effect of bevacizumab against colorectal cancer in Japan. Hence, this study was conducted to retrospectively evaluate the safety and efficacy of bevacizumab in clinical practice. METHODS: A total of 181 patients with metastatic colorectal cancer (mCRC) received bevacizumab in combination with chemotherapy at 18 hospitals in Kumamoto prefecture, Japan. We surveyed the medical records of all patients regarding the patient characteristics, objective tumor responses, and adverse events. We analyzed their overall survival and the survival benefit when continuing the administration of bevacizumab beyond disease progression (progressive disease; PD) in patients who received bevacizumab-containing 1st line therapy. RESULTS: The response rate (RR) in all lines of therapy was 42 %. The 1st line patients showed significantly better survival in comparison to the patients who received further lines of treatment (P = 0.005). There were no significant differences in survival between the group with post-PD treatment with bevacizumab and the group with post-PD treatment without bevacizumab (P = 0.13). The most common grade 3 or greater adverse event associated with bevacizumab was hypertension (12.2 %). Especially, a high incidence of gastrointestinal (GI) perforation was shown in this study (4.4 %) and most of the patients with GI perforation had some risk factors for this complication. CONCLUSION: Although the survival benefit of bevacizumab in Japanese patients with mCRC was similar to that observed in previous clinical trials, this study showed a high incidence of GI perforation in comparison to previous studies. Therefore, the careful selection of patients with few risk factors for this complication is likely to lead to a greater benefit from bevacizumab treatment.


Asunto(s)
Anticuerpos Monoclonales Humanizados/efectos adversos , Anticuerpos Monoclonales Humanizados/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/patología , Adulto , Anciano , Anciano de 80 o más Años , Anticuerpos Monoclonales Humanizados/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Pueblo Asiatico , Bevacizumab , Neoplasias Colorrectales/mortalidad , Femenino , Humanos , Hipertensión/inducido químicamente , Perforación Intestinal/inducido químicamente , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento , Adulto Joven
20.
Asia Pac J Oncol Nurs ; 10(1): 100167, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36593998

RESUMEN

Objective: Decision-making regarding end-of-life care (EOLC) place causes psychological burden on families and 70% of bereaved families have regrets. Healthcare professionals need to support families to prevent regrets. This study aims to clarify the relationship between the factors related to the decision-making methods used to choose a place of care for terminal cancer patients and the regret experienced by bereaved families. Methods: Participants were 1110 bereaved family members of patients with cancer. The questionnaire items were as follows: the agreement between patients and their families regarding their preferred place of EOLC, decision-making methods, satisfaction with the factors involved in the decision-making processes, experience regarding communication with medical personnel, and regret experienced by the bereaved families. Results: This analysis included 332 valid responses from 343 respondents. The regret score was significantly lower for the group wherein patients and their caregivers/families had similar preferences regarding the EOLC place (P â€‹< â€‹0.001). Regret scores were significantly higher in the physician-led decision-making group (vs. positive role group P â€‹= â€‹0.004, vs. shared role group P â€‹= â€‹0.014). The regret scores for the bereaved family members were negatively correlated with the satisfaction scores for "friend support," "relationship with doctor," "information," "explanation by doctor," "thought as oneself," and "participation in the decision" (ρ â€‹= â€‹-0.207-0.400, P â€‹≤ â€‹0.001). Conclusions: To reduce bereaved families' regret, family members should know the patients' preferred place of EOLC, and patients and their families should be supported by physicians and nurses to understand their options and participate in the decision-making process.

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