Publications by authors named "Omi T"

Estimating and controlling dynamical systems from observable time-series data are essential for understanding and manipulating nonlinear dynamics. This paper proposes a probabilistic framework for simultaneously estimating and controlling nonlinear dynamics under noisy observation conditions. Our proposed method utilizes the particle filter not only as a state estimator and a prior estimator for the dynamics but also as a controller.

View Article and Find Full Text PDF
Article Synopsis
  • * A study examined the effectiveness of the Canine Genotypes Panel 2.1 Kit for DNA identification in 150 unrelated dogs from three breeds: Golden Retrievers, Miniature Dachshunds, and Shiba Inus.
  • * Key findings revealed low random matching probabilities across breeds, indicating that the Kit is effective for identity testing and can serve as a population study tool for dogs in Japan.
View Article and Find Full Text PDF
Article Synopsis
  • A study analyzed the conception rates of wild Japanese monkeys in Fukushima City after radiation exposure from the 2011 nuclear disaster, using data from euthanized monkeys for population control.
  • Results indicated that while overall conception rates were similar over time, there was a significant decrease in conception rates for monkeys aged 8 years and older post-exposure, while younger monkeys showed no significant differences.
  • Although body fat, which affects fertility, didn't change significantly, the median cumulative radiation exposure was notably higher in the older age group, suggesting that higher exposure may contribute to decreased conception rates in that group.
View Article and Find Full Text PDF

Tandem GGGGCC repeat expansion in C9orf72 is a genetic cause of frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). Transcribed repeats are translated into dipeptide repeat proteins via repeat-associated non-AUG (RAN) translation. However, the regulatory mechanism of RAN translation remains unclear.

View Article and Find Full Text PDF

Ischemia-induced postoperative scalp necrosis in the superficial temporal artery (STA) region is known to occur after STA-middle cerebral artery anastomoses. However, no reports have evaluated the risk of postoperative scalp necrosis in the occipital artery (OA) region. This study examined the surgical procedures that pose a risk for postoperative scalp necrosis in the OA region following posterior cranial fossa surgery.

View Article and Find Full Text PDF

Objective: Although a qualitative diagnosis of plaque causing carotid stenosis has been attempted with carotid computed tomography angiography (CaCTA), no clear findings have been reported. We examined the correlation between the plaque CT values and plaque images obtained by magnetic resonance imaging to derive a qualitative diagnosis of the plaque using CaCTA.

Methods: Preoperative CaCTA images acquired from patients stented for carotid stenosis were retrospectively analyzed with respect to magnetization-prepared rapid acquisition with gradient echo and time-of-flight magnetic resonance angiography data.

View Article and Find Full Text PDF

Wild Japanese monkeys () were exposed to radiation after the Fukushima Daiichi nuclear accident in 2011. To clarify the biological effects of radiation exposure on their fetal growth, pregnant monkeys and their fetuses were analyzed. These animals were collected between 2008 and 2020 (before and after the accident in 2011) living in Fukushima City, approximately 70 km from the nuclear power plant.

View Article and Find Full Text PDF

Driver drowsiness is a widely recognized cause of motor vehicle accidents. Therefore, a reduction in drowsy driving crashes is required. Many studies evaluating the crash risk of drowsy driving and developing drowsiness detection systems, have used observer rating of drowsiness (ORD) as a reference standard (i.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the drainage patterns of the Uncal vein (UV) in patients with petroclival meningioma (PCM) during the anterior transpetrosal approach (ATPA), highlighting its similarity to the drainage of the superficial middle cerebral vein (SMCV).
  • A total of 43 PCM patients and 20 control patients with unruptured intracranial aneurysms were analyzed using preoperative digital subtraction angiography to assess their drainage patterns.
  • Results show that the DMCV drained to the UV less frequently in PCM patients compared to controls, increasing the risk of venous complications, suggesting that preoperative evaluation of UV drainage patterns is essential for safer surgical outcomes.
View Article and Find Full Text PDF

Over the 10 years immediately after the Fukushima Daiichi nuclear accident, we measured the changes in the muscle Cs concentration (Bq/kg) of wild Japanese monkeys living in Fukushima City, which is located approximately 70 km from the Fukushima Daiichi Nuclear Power Plant. The muscleCsconcentration, which was observed at a maximum of 13,500 Bq/kg immediately after the accident, had decreased to several hundred Bq/kg 10 years later. The muscle Cs concentration was significantly related to the soil contamination levels (10,000-30,000, 30,000-60,000, 60,000-100,000, and 100,000-300,000 Bq/m), sex, age class (immature, mature), body weight (> 5000 g, 5000-10,000 g, < 10,000 g), and seasons (the cold period from December to April, the warm period from May to November).

View Article and Find Full Text PDF

Delayed neuropsychiatric sequelae (DNS), which are related to neuropsychiatric symptoms and severe sequelae, occur within a few days of recovery from acute poisoning. They may involve a slowly progressing demyelinating white matter lesion caused by carbon monoxide cytotoxicity; moreover, the involvement of immune mechanisms has been reported. However, there remains no established treatment or therapeutic gain factors.

View Article and Find Full Text PDF

Background: Diploic veins may act as collateral venous pathways in cases of meningioma with venous sinus invasion. Diploic vein blood flow should be preoperatively evaluated to consider preserving the veins. In this study, we evaluated the use of time-resolved whole-head computed tomography angiography (4D-CTA)-which is less patient-intensive than digital subtraction angiography (DSA)-for assessing diploic vein blood flow and the positional relationship between typical craniotomy approaches and diploic veins.

View Article and Find Full Text PDF

The feline AB blood group system (blood types A, B, and AB) encoding the cytidine monophosphate-N-acetylneuraminic acid hydroxylase () gene is the most significant in transfusion medicine and hemolysis of the newborn for cats. Blood typing and cross-matching in pre-transfusion testing are crucial to determining blood compatibility and thus prevent hemolytic transfusion reactions. We here performed serological and genetic investigations to characterize blood samples from cats with discordant results for card agglutination (CARD) and the alloantibody agglutination test for blood typing in two cats (subjects K and R).

View Article and Find Full Text PDF

Onychomycosis with longitudinal spikes in the nail plate has been reported to be refractory to oral drugs as with dermatophytoma. We evaluated the efficacy of 10% efinaconazole solution in the treatment of onychomycosis with longitudinal spikes. Of the 223 subjects who were enrolled in a previous study, a post-hoc analysis of 82 subjects with longitudinal spikes was performed in this study.

View Article and Find Full Text PDF

Background: In vestibular schwannoma (VS) patients treated with stereotactic radiosurgery (SRS), radiation-induced pseudoaneurysm is a rare long-term complication. To the best of our knowledge, there has been only one report of direct surgery in ruptured cases, and the optimal strategy for direct surgery is yet to be clarified. This case report describes a case of ruptured VS-related SRS-induced pseudoaneurysm that was successfully treated by direct surgery.

View Article and Find Full Text PDF
Article Synopsis
  • A long-term study on Japanese patients with primary axillary hyperhidrosis evaluated the safety and efficacy of 5% sofpironium bromide gel over 52 weeks, following a brief confirmatory study.
  • Out of 185 participants, a majority were female (73%) with a median age of 38; efficacy results showed 57.4% in the switching group and 58.2% in the extension group achieved significant sweat reduction at the end of the study.
  • Adverse events were common but generally mild, with application site dermatitis and nasopharyngitis being the most frequent; no serious complications related to the drug were reported.
View Article and Find Full Text PDF

Background: Thromboembolic complications (TECs) are frequent during the endovascular treatment of unruptured aneurysms. To prevent TECs, dual antiplatelet therapy using aspirin and clopidogrel is recommended for the perioperative period. In patients with a poor response, clopidogrel is a risk factor for TECs.

View Article and Find Full Text PDF

Background: Although it is known that diploic veins frequently communicate with the dural venous sinuses, the role of diploic veins in patients with venous sinus invasion from meningiomas remains unknown.

Methods: We retrospectively examined the medical records of 159 patients who underwent their first craniotomies for intracranial meningiomas. Contrast-enhanced magnetic resonance imaging was used to evaluate diploic vein routes, and digital subtraction angiography (DSA) was used to evaluate diploic vein blood flow.

View Article and Find Full Text PDF
Article Synopsis
  • A phase 3 study tested the effectiveness and safety of 5% sofpironium bromide gel over 6 weeks in Japanese patients with severe underarm sweating (primary axillary hyperhidrosis).
  • Out of 281 patients, those using sofpironium showed a 53.9% success rate in meeting the treatment goals compared to 36.4% in the control group, indicating a statistically significant improvement.
  • While adverse events occurred in 44.0% of the sofpironium group (mainly mild), serious side effects were not reported, confirming that sofpironium is both effective and relatively safe for treating this condition.
View Article and Find Full Text PDF

Most male dogs are castrated at young ages, making them easy to rear following androgen deprivation. Although the incidence of canine prostate cancer is low, several patients have resistance to androgen therapy and poor clinical prognosis. These outcomes are similar to those of end-stage human androgen-independent prostate cancer.

View Article and Find Full Text PDF

Isocitrate dehydrogenase 1 (IDH1) mutations are common in gliomas, acute myeloid leukemia, and chondrosarcoma. The mutation 'hotspot' is a single arginine residue, R132. The R132H mutant of IDH1 produces the 2-hydroxyglutarate (2-HG) carcinogen from α-ketoglutarate (α-KG).

View Article and Find Full Text PDF

Background: Variants in the type IV collagen gene () cause early-onset cerebrovascular diseases. Most individuals are diagnosed postnatally, and the prenatal features of individuals with variants remain unclear.

Methods: We examined in 218 individuals with suspected /2-related brain defects.

View Article and Find Full Text PDF

Although kinship (parent-offspring or siblings) contact has been suggested as a driving factor for sarcoptic mange epizootic in raccoon dogs (Nyctereutes procyonoides), no effect has been reported. In contrast, habitat fragmentation caused by urbanization may result in a high occurrence of sarcoptic mange, because habitat fragmentation may promote contact infection by increasing the population density of raccoon dogs. The habitat distribution of raccoon dogs may therefore influence epizootic sarcoptic mange.

View Article and Find Full Text PDF

Objectives: Following the massive earthquake that struck eastern Japan on March 11, 2011, a large amount of radioactive material was released into the environment from the damaged reactor of the Fukushima Daiichi Nuclear Power Plant (FDNPP). After the FDNPP accident, radiocaesium was first detected in muscle samples from wild Japanese monkeys exposed to radioactive materials, and haematologic effects, changes in head size, and delayed body weight gain were also reported, but little is known about the distribution of Cs in the organs and tissues of wild Japanese monkeys.

Results: We detected the Cs in various organ and tissue samples of 10 wild Japanese monkeys inhabiting the forested areas of Fukushima City that were captured between July and August 2012.

View Article and Find Full Text PDF