RESUMEN

Cortical learning via sensorimotor experiences evoked by bodily movements begins as early as the foetal period. However, the learning mechanisms by which sensorimotor experiences guide cortical learning remain unknown owing to technical and ethical difficulties. To bridge this gap, we present an embodied brain model of a human foetus as a coupled brain-body-environment system by integrating anatomical/physiological data. Using this model, we show how intrauterine sensorimotor experiences related to bodily movements induce specific statistical regularities in somatosensory feedback that facilitate cortical learning of body representations and subsequent visual-somatosensory integration. We also show how extrauterine sensorimotor experiences affect these processes. Our embodied brain model can provide a novel computational approach to the mechanistic understanding of cortical learning based on sensorimotor experiences mediated by complex interactions between the body, environment and nervous system.

Asunto(s)

RESUMEN

The positional distributions of fatty acids (FAs) in milk fat containing short- and medium-chain FAs were analyzed by sn-1(3)-selective transesterification of triacylglycerols (TAGs) with ethanol using immobilized Candida antarctica lipase B (CALB), in a collaborative study conducted by 10 laboratories. The mean C4:0, C6:0, and C8:0 FA contents, when analyzed as propyl esters (PEs) using gas chromatography (GC) with a DB-23 capillary column, were found to be 3.0, 2.0, and, 1.3 area%, respectively. Their reproducibility standard deviations were 0.33, 0.18, and 0.19, respectively. The mean C4:0, C6:0, and C8:0 contents at the sn-2 position were 0.3, 0.4, and 1.0 area%, respectively. Their reproducibility standard deviations were 0.17, 0.11, and 0.19, respectively. The reproducibility standard deviations of C4:0, C6:0, and C8:0 FAs at the sn-2 position were either the same as or smaller than those for milk fat, although the FA contents at the sn-2 position were smaller than those in the milk fat. Therefore, it was concluded that the CALB method for estimating the regiospecific distribution is applicable to TAGs containing short- and medium-chain FAs. When estimating the short-chain (SC) FA contents in fats and oils by GC, it is better to analyze SCFAs as PEs or butyl esters, and not as methyl esters, in order to prevent loss of SCFAs during the experimental procedure because of their volatility and water solubility. This study also revealed that the stationary phase of the GC capillary column affected the flame ionization detector (FID) response of SCFAs. The theoretical FID correction factor (MWFA / active carbon number / atomic weight of carbon) fitted well with the actual FID responses of C4:0-C12:0 FAs when they were analyzed as PEs using a DB-23 column; however, this was not the case when the GC analysis was performed using wax-type columns.

Asunto(s)

RESUMEN

The positional distributions of fatty acids (FAs) in fats and oils are principally analyzed by selectively transesterifying the target triacylglycerols (TAGs) at the 1(3) position using Pseudozyma (Candida) antarctica lipase, followed by recovering the resulting 2-monoacylglycerols (MAGs) by chromatography. FA compositions were measured by gas chromatography (GC) after methylating target TAGs and 2-MAGs. The method was collaboratively evaluated by 12 laboratories by analyzing the positional FA distributions in soybean, palm, and sardine oils. The maximum reproducibility relative standard deviations for the major FAs and those at the sn-2 positions of soybean, palm, and sardine oils were 4.41% and 3.92% (18:3n-3), 4.48% and 3.82% (18:0), and 8.93 and 8.24% (14:0), respectively. The values at the sn-2 position were always low. Therefore, these results indicated that the variations were mainly caused by the FA analysis procedure, i.e., the methylation and GC analyses, rather than the enzymatic transesterification and chromatography utilized to prepare 2-MAGs from the target oil.

Asunto(s)

Asunto(s)

RESUMEN

The 'Clinical Guidelines for Obstetrical Practice, 2011 edition' were revised and published as a 2014 edition (in Japanese) in April 2014 by the Japan Society of Obstetrics and Gynecology and the Japan Association of Obstetricians and Gynecologists. The aims of this publication include the determination of current standard care practices for pregnant women in Japan, the widespread use of standard care practices, the enhancement of safety in obstetrical practice, the reduction of burdens associated with medico-legal and medico-economical problems, and a better understanding between pregnant women and maternity-service providers. The number of Clinical Questions and Answers items increased from 87 in the 2011 edition to 104 in the 2014 edition. The Japanese 2014 version included a Discussion, a List of References, and some Tables and Figures following the Answers to the 104 Clinical Questions; these additional sections covered common problems and questions encountered in obstetrical practice, helping Japanese readers to achieve a comprehensive understanding. Each answer with a recommendation level of A, B or C was prepared based principally on 'evidence' or a consensus among Japanese obstetricians in situations where 'evidence' was weak or lacking. Answers with a recommendation level of A or B represent current standard care practices in Japan. All 104 Clinical Questions and Answers items, with the omission of the Discussion, List of References, and Tables and Figures, are presented herein to promote a better understanding among English readers of the current standard care practices for pregnant women in Japan.

Asunto(s)

Asunto(s)

RESUMEN

We examined the current status of human T-cell leukemia virus type 1 (HTLV-1) carrier in Japanese pregnant women, according to the results of HTLV-1 screening and confirmation tests of women who gave birth in Japan in 2011. We requested 2642 obstetrical facilities to provide information of HTLV-1 tests and 71.3% of them responded. Considering the response rate and the rate of implementation of confirmation tests, the number of HTLV-1 carrier in Japanese pregnant women was estimated to be 1620 (0.16%) per year.

Asunto(s)

RESUMEN

OBJECTIVES: To determine if providing perinatal immunization education positively changes the immunization status of infants, influences the infant immunization knowledge, attitudes and beliefs of mothers and affects the intent to vaccinate children in Japan where immunization education is limited. METHODS: Pregnant women were recruited from three sites in Tokyo, Japan and were assigned to two intervention (pre- or postnatal education) groups and a control group. The immunization status of infants was assessed and a written survey was performed before and after the intervention. RESULTS: Among 119 study participants, 106 subjects replied to the post-survey. The intervention groups (34.3%) had higher immunization rates in infants at three months of age than the control group (8.3%) (P=0.005); however, no differences were observed between the prenatal (29.4%) and postnatal groups (38.9%) (P=0.40). The percentage of women intended to vaccinate their infants was higher in the intervention groups (61.4%) compared to the control group (33.3%) (P=0.01). The improvement in score for basic knowledge was higher in the intervention groups, particularly in the prenatal group (mean±S.D.: 3.4±1.8) compared to the control (1.9±1.9) (P=0.003). CONCLUSIONS: Perinatal immunization education improved the immunization status of infants, increased the women's knowledge on immunization and intention to vaccinate their infants.

Asunto(s)

RESUMEN

PURPOSE: To investigate perinatal outcomes in late primiparous women aged 35-39 and ≥40 years. Our main research question: "Was the rate of cesarean section similar between these 2 groups of advanced maternal age?" METHODS: Primiparous women aged ≥35 years, who delivered in our center between April 2004 and March 2007, were enrolled in this study. They were divided into two groups: women aged 35-39 years and those aged ≥40 years. Antenatal complications, deliveries, and neonatal outcomes were analyzed. Fetal abnormalities, abortions, and multiple gestations were excluded. RESULTS: We assessed 752 cases (35-39 years, 610 cases; ≥40 years, 142 cases). Incidence of cesarean section (CS) was significantly higher in pregnant women aged ≥40 years (P < 0.01). The CS rate amounted to 50.0% of all deliveries in this age group. Among patients with labor deliveries, the CS rate was also significantly higher in the older age group (P < 0.05). With regard to indication for CS with labor deliveries, the rate of non-progressive labor/dystocia was 19.4% in primiparous women aged ≥40 years and 11.0% in those aged 35-39 years, respectively (P < 0.05). In contrast, the rates of antenatal complications were not different between the two groups, except for gestational diabetes or leiomyoma. No significant differences between the two groups could be found for neonatal outcomes such as birth weight, Apgar score, and admission to neonatal intensive care unit. CONCLUSIONS: CS rate was 50.0% in primiparous women aged ≥40 years. In addition, CS caused by dystocia was almost twice as frequent in primiparous women aged ≥40 years as in women aged 35-39 years. Among late pregnancies, primiparous women aged 40 years and older had higher risk of CS.

Asunto(s)

RESUMEN

Clinical guidelines for obstetrical practice were first published by the Japan Society of Obstetrics and Gynecology (JSOG) and the Japan Association of Obstetricians and Gynecologists (JAOG) in 2008, and a revised version was published in 2011. The aims of this publication include the determination of current standard care practices for pregnant women in Japan, the widespread use of standard care practices, the enhancement of safety in obstetrical practice, the reduction in burdens associated with medico-legal and medico-economical problems, and a better understanding between pregnant women and maternity-service providers. These guidelines include a total of 87 Clinical Questions followed by several Answers (CQ&A), a Discussion, a List of References, and some Tables and Figures covering common problems and questions encountered in obstetrical practice. Each answer with a recommendation level of A, B or C has been prepared based principally on 'evidence' or a consensus among Japanese obstetricians in situations where 'evidence' is weak or lacking. Answers with a recommendation level of A or B represent current standard care practices in Japan. All 87 CQ&A are presented herein to promote a better understanding of the current standard care practices for pregnant women in Japan.

Asunto(s)

RESUMEN

In 2009/10 season pandemic (H1N1) 2009 epidemic, pregnant women were recognized as high risk group, and taken different measures from non-pregnant adults. This new recommendations for pregnant women was also different from Japanese conventional management for pregnant women suffering from seasonal flu. The policy of these recommendations of novel flu for pregnant women was highlighted to aggressive preventions and treatments. To put it concretely, 1) pregnant women will be preferably accepted influenza virus vaccines during all the period of pregnancy, 2) early administration of oseltamivir/zanamivir to pregnant women will not be hesitated. This new recommendation for pregnancy will be probably applied in this 2010/11 season too.

Asunto(s)

RESUMEN

By the investigation of our study group 595 HIV infected pregnant women have been confirmed in Japan since 1984. In recent years, around 40 pregnant women a year were diagnosed as HIV positive. These HIV infected pregnant women were not concerned with a value of CD4 and received antiretroviral therapy such as zidovudine (AZT) monotherapy or highly active antiretroviral therapy (HAART) starting from the second trimester of pregnancy. According to recommendations and current data, cesarean delivery before the onset of labor is performed around 37 weeks of pregnancy and prophylactic AZT syrups are given to infants starting 8-12 hrs after birth for 6 weeks. These preventive managements such as antiretroviral therapy, elective cesarean delivery and formula feeding significantly reduced mother-to-child transmission (MTCT) of HIV. The transmission rate of HIV fell to 0.5% in Japan, but the problem of the teratogenicity of antiretroviral drugs remain unclear. Further studies are needed.

Asunto(s)

RESUMEN

BACKGROUND: Prenatal human immunodeficiency virus (HIV) testing is essential for the prevention of mother-to-child transmission. However, false-positive results of screening testing are a concern as they may cause unnecessary emotional stress to pregnant women waiting for confirmatory test results. In regions with an extremely low prevalence, the positive predictive values of screening are unacceptably low rate. Here, we propose a HIV screening algorithm consisting of serial two fourth-generation enzyme immunoassays to reduce the number of false-positive screening results. METHODOLOGY/PRINCIPAL FINDINGS: When 6461 pregnant women presenting to two maternity hospitals located in the Tokyo metropolitan area of Japan from September, 2004 to January, 2006 were tested using Enzygnost HIV Integral as a first screening test, 27 showed positive reactions. When these positive reaction samples were tested using VIDAS HIV DUO Quick as a second screening test, only one of them had a positive reaction, and the remaining 26 were nonreactive. Confirmatory Western blots and nucleic acid amplification test also showed that one was positive and the remaining 26 were negative; the subject who was positive with the confirmatory tests was identical to the subject who was positive with the second screening test. Thus, by adding the second screening test, the false-positive rate was improved from 0.4% to 0%, and the positive predictive value from 3.7% to 100%, compared with the single screening test. CONCLUSION: By applying our serial screening algorithm to HIV testing in maternity hospitals, many uninfected pregnant women would not need to receive confirmatory tests and be subjected to emotional turmoil while waiting for their confirmatory test results. This algorithm would be suitable for HIV testing of pregnant women living in low prevalence regions such as Japan.

Asunto(s)

RESUMEN

Sexually transmitted disease (STD) is the disease that is spread by sexual contact, including chlamydial infection, gonorrhea, genital warts, herpes, syphilis, and infection with human immunodeficiency virus (HIV). STDs are the most common contagious diseases among young people in Japan. People with an STD may not have any symptoms and may not know they have it. Even if there are no symptoms, their health can be affected. Advanced STDs can cause severe damage to body. Often, symptoms occur only if the disease becomes more advanced. Untreated chlamydia or gonorrhea can cause pelvic inflammatory disease (PID) in women. PID is an infection of the uterus, fallopian tubes, and ovaries. It can cause infertility and ectopic pregnancy. If patient who has STD is pregnant, it can cause abortion, premature delivery and intrauterine infection.

Asunto(s)

RESUMEN

OBJECTIVES: Hypophosphatasia is an inherited disorder characterized by defective bone mineralization and deficiency of tissue nonspecific alkaline phosphatase (TNSALP) activity. This disorder is caused by various mutations in the TNSALP gene. We report here hypophosphatasia in two siblings, both of them severely affected by the perinatal (lethal) type. METHODS: We diagnosed the first infant by clinical and radiologic manifestations, and laboratory findings. Laboratory findings were characterized by deficiency of serum alkaline phosphatase. Both parents and the second infant were then analyzed by molecular techniques. RESULTS: The radiograph of the first infant showed severe hypomineralization of the skeleton. Molecular analysis of the second infant showed that this condition was caused by a homozygous single T nucleotide deletion at cDNA number 1559 (1559delT). Both parents were heterozygous carriers for this mutation, although they were not consanguineous. CONCLUSION: This mutation has been frequently found in Japanese hypophosphatasia patients, but this is the first observation of a homozygous deletion. This report shows that homozygosity for the 1559delT mutation of the TNSALP gene results in a severe lethal phenotype.

Asunto(s)