[Study of Home-based Ringworm Treatment and Follow-up by Visiting Nurses and Physicians: Interventional Effects]

　The aim of this study was to assess the effects of cooperation by visiting nurses and physicians experienced in general patient care, dermatology, and podiatry for the treatment of ringworm. Questionnaires were delivered to 1184 patients receiving home-based care by one of 14 participating visiting nursing establishments with a combined capacity of 3273 patients throughout five wards of the Tokyo metropolitan area. Responses were obtained from 691 patients (participation rate, 60.2%; average age, 80.2 years). The onychomycosis morbidity rate among home care patients was 22.7%. The results showed a significant reduction in the incidence of ringworm in the intervention group, from 79.5% to 54.5% (p=0.022), and in the incidence of "foot skin infection", from 100.0% to 31.6% (p<0.001). Although the level of care deteriorated in the control group (p=0.008), there was no significant change in the intervention group. The incidence of leg pain also remained unchanged in the control group (p=0.285) but decreased in the intervention group (p=0.003). While the "degree of satisfaction with foot cleanliness" did not change significantly in the control group (p=0.260), patients in the intervention group were generally satisfied with foot cleanliness. It is necessary to take into account foot care and the effect of onychomycosis treatment vearsusu no treatment and to ensure that visiting nurses and caregivers master foot care-related treatment regimens. We suggest the need to improve the maintenance of foot care and ringworm intervention/treatment performed by physicians, nurses, and caregivers.

[Current Status of Onychomycosis Topical Therapy Conducted at Home]

　Patients usually consult a dermatologist for the treatment of onychomycosis. However, in the case of home care, visiting nurses may assist with bathing, which offers the opportunity to observe patients' feet for possible signs of onychomycosis without causing anxiety. It is estimated that more than 30% of patients receiving home care have onychomycosis. Before the approval of efinaconazole, healthcare personnel hesitated to treat onychomycosis because of: 1) possible side effects, especially liver dysfunction and pain due to repeated blood collection, as a major goal of home care is to minimize pain; and 2) the questionable efficacy of previously available antifungal medications. In addition, many patients report fear of "transmitting athlete's foot to others" and "do not want to show my dirty toenails". On the other hand, caregivers reportedly worry about "athlete's foot being transmitted to them".

Protein-altering variants of PTPN2 in childhood-onset Type 1A diabetes

AIM

To examine the contribution of PTPN2 coding variants to the risk of childhood-onset Type 1A diabetes.

METHODS

PTPN2 mutation analysis was carried out for 169 unrelated Japanese people with childhood-onset Type 1A diabetes. We searched for coding variants that were absent or extremely rare in the general population and were scored as damaging by multiple in silico programs. We performed mRNA analysis and three-dimensional structural prediction of the detected variants, when possible. We also examined possible physical links between these variants and previously reported risk SNPs as well as clinical information from variant-positive children.

RESULTS

One frameshift variant (p.Q286Yfs*24) and two probably damaging missense substitutions (p.C232W and p.R350Q) were identified in one child each. Of these, p.Q286Yfs*24 and p.C232W were hitherto unreported, while p.R350Q accounted for 2/121,122 alleles of the exome datasets. The p.Q286Yfs*24 variant did not encode stable mRNA, and p.C232W appeared to affect the structure of the tyrosine-protein phosphatase domain. The three variants were physically unrelated to known risk SNPs. The variant-positive children manifested Type 1A diabetes without additional clinical features and invariably carried risk human leukocyte antigen alleles.

CONCLUSIONS

The results provide the first indication that PTPN2 variants contribute to the risk of Type 1A diabetes, independently of known risk SNPs. PTPN2 coding variants possibly induce non-specific Type 1A diabetes phenotypes in individuals with human leukocyte antigen-mediated disease susceptibility. Our findings warrant further validation.

Status of the GroundBIRD Telescope

Our understanding of physics at very early Universe, as early as 10−35 s after the Big Bang, relies on the scenario known as the inflationary cosmology. Inflation predicts a particular polarization pattern in the cosmic microwave background, known as the B-mode yet the strength of such polarization pattern is extremely weak. To search for the B-mode of the polarization in the cosmic microwave background, we are constructing an off-axis rotating telescope to mitigate systematic effects as well as to maximize the sky coverage of the observation. We will discuss the present status of the GroundBIRD telescope.

Mediators of the effects of rice intake on health in individuals consuming a traditional Japanese diet centered on rice

Although the Japanese diet is believed to be balanced and healthy, its benefits have been poorly investigated, especially in terms of effects on mental health. We investigated dietary patterns and physical and mental health in the Japanese population using an epidemiological survey to determine the health benefits of the traditional Japanese diet. Questionnaires to assess dietary habits, quality of life, sleep quality, impulsivity, and depression severity were distributed to 550 randomly selected middle-aged and elderly individuals. Participants with any physical or mental disease were excluded. Two-hundred and seventy-eight participants were selected for the final statistical analysis. We determined rice to be one of the most traditional foods in Japanese cuisine. Scores for each questionnaire were computed, and the correlations between rice intake and health indices were assessed. When analyzing the direct correlations between rice intake and health indices, we found only two correlations, namely those with quality of life (vitality) and sleep quality. Path analysis using structural equation modeling was performed to investigate the association between rice intake and health, with indirect effects included in the model. Additional associations between rice intake and health were explained using this model when compared to those using direct correlation analysis. Path analysis was used to identify mediators of the rice-health association. These mediators were miso (soybean paste) soup, green tea, and natto (fermented soybean) intake. Interestingly, these mediators have been major components of the Japanese diet since 1975, which has been considered one of the healthiest diets since the 1960s. Our results indicate that the combination of rice with other healthy foods, which is representative of the traditional Japanese diet, may contribute to improvements in physical and mental health.

An HIV-positive Case of Obstructive Jaundice Caused by Immune Reconstitution Inflammatory Syndrome of Tuberculous Lymphadenitis Successfully Treated with Corticosteroids

A 60-year-old man was admitted to our hospital because of a persistent fever with enlargement of multiple lymph nodes in the mediastinum and around the pancreatic head. He was diagnosed with tuberculosis and human immunodeficiency virus infection. We started antiretroviral therapy three weeks after the initiation of anti-tuberculous therapy. Two weeks later, jaundice appeared with dilatation of the biliary tract due to further enlargement of the lymph nodes, which seemed to be immune reconstitution inflammatory syndrome (IRIS). The administration of corticosteroids resolved the obstructive jaundice without surgical treatment or endoscopic drainage. Obstructive jaundice caused by IRIS should first be treated with corticosteroids before invasive treatment.

The relationship between stressors and mental health among Japanese middle-aged women in urban areas

In middle age, some people may become mentally or emotionally unstable. Additionally, in Japan, mood disorders, such as depressive symptoms, occur mostly among middle-aged women (i.e., aged 40-49 years). However, few studies have examined stressors related to mental health. In the present study, we developed a stressor scale for middle-aged women and examined stressors correlated with middle-aged women's mental health. In January 2015, an anonymous, self-administered survey was mailed to 1,000 randomly selected women aged 45 through 64 years living in Tokyo, Japan. Completed questionnaires were obtained from 329 women (32.9 percent). Factor analysis identified the following stressor categories: "relationship with my husband," "uneasiness about old age," "health concerns," "work-life balance," and "relationship with my friends." "Uneasiness about old age" and "health concerns" were correlated negatively with participants' mental health. Improving middle-aged women's health requires interventions that relieve stressors resulting from age-related problems and promote a positive image of old age.

Abstract WMP44: Functional Recovery Following a Combination of Thrombin Inhibitor Argatroban and Tissue Plasminogen Activator (tPA) in Thromboembolic Stroke in Nonhuman Primates

Introduction: Early treatment following an acute stroke with the thrombolytic tissue plasminogen activator (tPA) increases functional recovery. Complications of tPA treatment include hemorrhaging and narrow therapeutic time window. Thus, better treatments for acute stroke are needed. While a number of novel treatments for acute ischemic stroke have been derived from preclinical rodent stroke models, to date, none have succeeded in clinical studies. Nonhuman primates are phylogenetically closer to humans than rodents, which could narrow the current translational shortfall between preclinical and clinical findings. The goal of the current study was to test the effect of a combination of argatroban, a thrombin inhibitor, and tPA on functional recovery and brain infarction size following thromboembolic ischemia in nonhuman primates.

Methods: Autologous blood clots were injected into the internal carotid artery of cynomolgus macaques to induced a thromboembolic stroke. Either tPA (0.9 mg/kg; n = 8) or vehicle (n = 8) was intravenously infused for one hour an hour following the induction of ischemia. In a third group, after completion of tPA infusion, argatroban (0.6 mg/kg; n= 7) was intravenously infused for 22 hours. Doppler ultrasound recorded middle cerebral artery (MCA) blood flow for six hours following induction of stroke. In addition, brain infarct volume (TTC staining) and functional assessment (Neurologic Deficit Score; NDS) were determined 24 hours after ischemia.

Results: Compared to vehicle treatment, tPA treatment significantly decreased MCA occlusion time, brain infarct volume and NDS. Treatment with the combination of argatroban and tPA decreased occlusion time, brain infarct volume and NDS similar to tPA treatment alone.

Conclusion: The current study suggests that the addition of argatroban could enhance recanalization rates observed with tPA treatment alone. However, in contrast to previous findings in rats, the combination of argatroban and tPA does not appear to further enhance tissue or functional recovery from a thromboembolic stroke compared to tPA treatment alone.

Abstract WMP79: Characterization of Acute Stoke Induced by Photochemically-induced Thrombosis (PIT) in Nonhuman Primate (NHP)

Introduction: Tissue plasminogen activator (tPA) is the standard treatment for acute stroke but its widespread use is constrained by its narrow therapeutic window: better treatments are needed. Clinical stroke is heterogeneous in presentation and responsiveness to therapeutics. There are several methods of inducing acute cerebral ischemia in NHP and each model induces a differential pathology following occlusion. The goal of the current study was to characterize the PIT model of acute stroke in nonhuman primates.

Methods: First, the time course of brain infarction between PIT and permanent middle cerebral artery (pMCA) occlusion was compared. PIT and pMCA occlusion were performed in cynomolgus macaques (n = 3/procedure). Total brain infarction volume and the volume of viable tissue surrounding the ischemic core that eventually becomes necrotic (“penumbra”) over time was measured using FLAIR MR imaging, 3, 6, 24 hours, 3, 5 and 7 days post-occlusion. In addition, functionality (Neurologic Deficit Score; NDS) was assessed 24 hours, 3, 5 and 7 days post-occlusion. Second, tPA’s (n = 7) therapeutic time window was determined. tPA (0.9 mg/kg) was i.v. infused 1, 3 and 4.5 hours post-occlusion. Control animals (n = 7) received a saline infusion 3 hours post-occlusion. Total brain infarction volume and presence of intracerebral hemorrhage 24 hours post-occlusion were measured. NDS was also determined.

Results: First, significant brain infarction was observed 6 hours post-occlusion with FLAIR MR imaging in both models. Significant penumbral tissue was observed up to 6 hours post-occlusion. The brain infarction volume plateaued 5-7 days post-occlusion. In the second stage, tPA showed robust efficacy when it was infused 1 hour after occlusion. However, when tPA was infused either 3 or 4.5 hours post-occlusion, infarct volume and NDS were not different compared to saline treatment. Furthermore, significant intracranial hemorrhaging was observed when tPA was infused 3 or 4.5 hours post-occlusion.

Conclusion: The current study suggests that the PIT model mimics human thrombotic stroke. In addition, since significant risks associated with tPA can also observed, the PIT model can be used to compare novel treatments with tPA in terms of intracranial hemorrhaging.

Experts' perspectives on the role of medical marijuana in oncology: A semistructured interview study

BACKGROUND

Expansion of medical marijuana (MM) laws in the United States may offer oncology new therapeutic options. However, the scientific evidence for MM remains in infancy. This study qualitatively explored professional opinion around the role of MM in cancer care.

METHODS

Semistructured interviews were administered to a sample of individuals with expertise at the interface of MM and oncology nationally. Key informant criteria included an oncologic clinical or research background and any of the following: publications, research, or lectures on cannabinoids or cancer symptoms; involvement in the development of MM dispensaries or legislation; and early adoption of state MM certification procedures. A gold standard, grounded, inductive approach was used to identify underlying themes.

RESULTS

Participants (N = 15) were predominantly male, in their sixth decade, working in academic settings. Themes ranged from strong beliefs in marijuana's medical utility to reservations about this notion, with calls for expansion of the scientific evidence base and more stringent MM production standards. All participants cited nausea as an appropriate indication, and 13 of 15 pain. Over one-third believed MM to have a more attractive risk profile than opioids and benzodiazepines.

CONCLUSIONS

Expert opinion was divided between convictions in marijuana's medicinal potential and guardedness in this assertion, with no participant refuting MM's utility outright. Emergent themes included that MM ameliorates cancer-related pain and nausea and is safer than certain conventional medications. Participants called for enhanced purity and production standards, and further research on MM's utility.

Expression of mammalian mitochondrial F1-ATPase in Escherichia coli depends on two chaperone factors, AF1 and AF2

F₁‐ATPase (F₁) is a multisubunit water‐soluble domain of F_oF_1‐ATP synthase and is a rotary enzyme by itself. Earlier genetic studies using yeast suggested that two factors, Atp11p and Atp12p, contribute to F₁ assembly. Here, we show that their mammalian counterparts, AF1 and AF2, are essential and sufficient for efficient production of recombinant bovine mitochondrial F₁ in Escherichia coli cells. Intactness of the function and conformation of the E. coli‐expressed bovine F₁ was verified by rotation analysis and crystallization. This expression system opens a way for the previously unattempted mutation study of mammalian mitochondrial F₁.

Isolation and phylogenetic analysis of canine distemper virus among domestic dogs in Vietnam

Canine distemper virus (CDV) is one of the most serious pathogens found in many species of carnivores, including domestic dogs. In this study, hemagglutinin (H) genes were detected in five domestic Vietnamese dogs with diarrhea, and two CDVs were successfully isolated from dogs positive for H genes. The complete genome of one isolate, CDV/dog/HCM/33/140816, was determined. Phylogenetic analysis showed that all Vietnamese CDVs belonged to the Asia-1 genotype. In addition, the H proteins of Vietnamese CDV strains were the most homologous to those of Chinese CDVs (98.4% to 99.3% identity). These results indicated that the Asia-1 genotype of CDV was the predominant genotype circulating among the domestic dog population in Vietnam and that transboundary transmission of CDV has occurred between Vietnam and China.

Detection of Francisella tularensis and analysis of bacterial growth in ticks in Japan

Francisella tularensis is distributed in the Northern hemisphere and it is the bacterial agent responsible for tularaemia, a zoonotic disease. We collected 4 527 samples of DNA from ticks in Japan, which were then analysed by real-time PCR and nested PCR. Francisella DNA was detected by real-time PCR in 2·15% (45/2 093) of Ixodes ovatus, 0·66% (14/2 107) of I. persulcatus, 8·22% (6/73) of I. monospinosus and 0·72% (1/138) of Haemaphysalis flava specimens. Finally, Francisella DNA was detected by nested PCR in 42 and five samples I. ovatus and I. persulcatus, respectively, which were positive according to real-time PCR. Phylogenetic analysis showed that the sequence from I. ovatus and I. persulcatus were clustered with F. tularensis type B strains distributed in Eurasia. Microinjected live F. tularensis persisted in ticks, whereas heat-killed F. tularensis decreased. Microinjected F. tularensis hlyD mutant decreased in ticks significantly compared to parent strain, thereby suggesting that HlyD in F. tularensis contributes to the adaptation or survive of bacterial infection in ticks.

SIGNIFICANCE AND IMPACTS OF THE STUDY

Francisella tularensis has been detected in ticks, suggesting that it is a tick-borne pathogen. However, F. tularensis has not been detected in ticks in Japan since 1991. In this study, we performed a large-scale analysis of DNA isolated from ticks in Japan and detected F. tularensis by real-time polymerase chain reaction (PCR) and nested PCR. We found that F. tularensis could survive in ticks based on an experimental tick-infection model. We also identified a bacterial factor that contributes to survival in ticks. Our results suggest that ticks are candidate vectors that mediate F. tularensis infection in Japan.

[Retrospective Study of Clinical Features and Prognosis of Pneumococcal Pneumonia Among Patients Under 65 Years of Age]

The 23-valent pneumococcal polysaccharide vaccine (PPSV23) for elderly people has been included in the National Immunization Program (NIP) of Japan since October 2014. Targets for PPSV23 were restricted to persons ≥65 years of age and persons 60 to 64 years of age with an underlying severe physical disability (expressed as 1st grade in Japan). In this study, the clinical courses of non-target persons <65 years of age were compared between those with non-severe underlying diseases (A group) and those without underlying diseases (B group), and the need to expand the targets for PPSV23 within the NIP was investigated. Persons with pneumococcal pneumonia who were diagnosed based on a positive sputum or blood culture result were enrolled between January 2004 and April 2014. As a result, the number of subjects in A group was 2.6 times larger than that in B group, and this difference was especially pronounced (4.2 times) among subjects between the age of 60 to 64 years. These findings suggest that persons with underlying disease without a 1st grade physical disability might also be susceptible to pneumococcal pneumonia. No significant differences in the severity of pneumonia, the length of treatment, or the rates of admission were seen between A group and B group. The severity of pneumonia and the rates of admission among targets of the NIP were significantly higher than those of A group. In conclusion, our study suggests that A group should also be included among the targets of the NIP and that all targets eligible to receive the pneumococcal vaccine within NIP should be inoculated.

[CLINICAL EFFECTS OF INTRAVENOUSLY ADMINISTERED LEVOFLOXACIN IN PATIENTS WITH PULMONARY TUBERCULOSIS: A RETROSPECTIVE STUDY]

OBJECTIVES

Our aim was to investigate the clini- cal effects of levofloxacin (LVFX) administered intravenously to patients with pulmonary tuberculosis.

METHODS

We studied 65 patients hospitalized at The National Hospital Organization Tokyo National Hospital between January 2010 and December 2012. The patients did not have human immunodeficiency virus (HIV) infection, and received anti-tuberculous drugs intravenously due to the inability to receive drugs orally.

RESULTS

Twenty-seven patients were intravenously treated with isoniazid (INH), streptomycin (SM) and LVFX (HLS), and 38 patients were treated with INH and SM (HS). For both groups, mean age was very high (80.6±15.0 years, HLS group; 81.0± 12.1 years, HS group) and serum albumin levels were low (2.0 ± 0.62 mg/dl and 2.1 ± 0.42 mg/dl, respectively). Most patients were administered oxygen (81.5%, HLS; 78.9 %, HS). In radiological findings, most patients had bilateral (92.6%, HLS; 92.1%, HS) and widely spread (55.6%, HLS; 57.9%, HS) shadows. No significant differences were found between both groups in terms of the above data, except for sex. Almost 70% of all patients died; 51.9% of patients in the HLS group and 50.0% of those in the HS group died of tuberculosis, while 18.5% of patients in the HLS group and 18.4% of those in the HS group died of the other diseases. There were no significant differences in the causes of death and the survival rates of both groups.

CONCLUSION

Patients with pulmonary tuberculosis who were administered intravenous drugs were elderly and in poor general health. As such, mortality of these patients was very high. In this study, no clinical effects were found in the patients administered intravenous LVFX with INH and SM compared with patients treated with INH and SM.