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Nagafuji M, Fujiyama S, Ishii R, Shime M, Kitatsu T, Hoshino Y, Kanai Y, Arai J, Miyazono Y, Takada H. Effect of maturation at birth on the clinical features of neonatal cow's milk protein allergy: A retrospective study. J Pediatr Gastroenterol Nutr 2024. [PMID: 38356291 DOI: 10.1002/jpn3.12157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/30/2023] [Accepted: 12/23/2023] [Indexed: 02/16/2024]
Abstract
Neonatal immune regulation transitions from fetal immunity and varies with maturation status, but its role in neonatal cow's milk protein allergy (CMPA) remains unknown. We studied the association between maturation status at birth and neonatal CMPA. Clinical and laboratory data of neonates presenting with CMPA symptoms were retrospectively collected from two tertiary hospitals. Patients were assessed according to gestational age at birth: preterm, late-preterm, and full-term. Fifty-five infants (26 females, 14 preterm, 15 late-preterm, and 26 full-term) were included; 44 were negative for milk-specific IgE. Neonatal CMPA was common during moderately premature periods. Preterm infants exhibited longer latency from initial CM exposure to disease onset, lower incidence of bloody stool, and absence of elevated monocyte counts. However, immunoreactivity to CM antigens was retained in all infants. Neonatal CMPA features varied with infant maturation status at birth. Our results improve the understanding of intestinal immunity development, fetal/neonatal immune regulation, and CMPA pathogenesis.
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Affiliation(s)
- Motomichi Nagafuji
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Satoshi Fujiyama
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Ryota Ishii
- Department of Biostatistics, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Michiru Shime
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Toshinori Kitatsu
- Department of Pediatric Allergy, Ibaraki Children's Hospital, Mito, Ibaraki, Japan
| | - Yusuke Hoshino
- Department of Neonatology, Ibaraki Children's Hospital, Mito, Ibaraki, Japan
| | - Yu Kanai
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Department of Child Health, Institute of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Junichi Arai
- Department of Neonatology, Ibaraki Children's Hospital, Mito, Ibaraki, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Department of Child Health, Institute of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Department of Child Health, Institute of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Okada Y, Kido T, Takeuchi S, Hanaki M, Nakamura Y, Nagafuji M, Kanai Y, Hitaka D, Miyazono Y, Takada H. Effectiveness of ultrasound-guided peripheral arterial cannulation in neonates, including very low birth weight infants who are conventionally difficult-to-cannulate: a case series. Eur J Pediatr 2024; 183:509-512. [PMID: 37930399 DOI: 10.1007/s00431-023-05320-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/22/2023] [Accepted: 10/28/2023] [Indexed: 11/07/2023]
Abstract
The effectiveness of ultrasound-guided peripheral arterial cannulation (UGPAC) in children has been increasingly been reported. However, to the best of our knowledge, there have been no reports of UGPAC in neonates, including very low birth weight infants (VLBWIs). In this study, we aimed to retrospectively review the results of UGPAC in neonates, including VLBWIs, and assess its effectiveness. This case series was conducted in a tertiary neonatal intensive care unit (NICU) in Japan. We included neonates aged below 28 days who underwent UGPAC in our NICU between April 2021 and October 2022. We extracted the following data from medical records and analysed it retrospectively: patient age (days), postconceptional age, patient weight at the time of cannulation, number of punctures using the conventional technique before ultrasound guidance was performed and number of punctures with the ultrasound-guided technique until successful cannulation. A total of 27 UGPACs were performed in 19 neonates, including 14 cannulations in 10 VLBWIs. In infants weighing > 1500 g and VLBWIs, the success rate within the first three punctures was 100% (13/13) and 79% (11/14), respectively. Overall, 41% (11/27) of UGPACs were performed following failed punctures using conventional methods, with a 100% success rate within the first three attempts. In all cases, no apparent adverse events, such as hypothermia, were noted. Conclusions: Our results suggest that UGPAC had a high success rate in neonates, including VLBWIs. Further studies are required to compare the effectiveness of UGPAC with conventional methods in neonates. What is Known: • The use of ultrasound guidance for arterial cannulation is recommended in children. • Ultrasound-guided peripheral arterial cannulation (UGPAC) in neonates, including very low birth weight infants (VLBWIs), has not been reported. What is New: • UGPAC in neonates, including VLBWIs, was performed with a high success rate; approximately 40% of UGPACs were performed after the failure of the conventional methods. • This study suggested the effectiveness of UGPAC in neonates, including VLBWIs.
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Affiliation(s)
- Yuki Okada
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan.
| | - Takahiro Kido
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Syusuke Takeuchi
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Mai Hanaki
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Yuri Nakamura
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Motomichi Nagafuji
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Yu Kanai
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, 2-1-1, Amakubo, Tsukuba, Ibaraki, 305-8576, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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3
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Amano A, Nagafuji M, Fujiyama S, Hitaka D, Miyazono Y, Takada H. Immune response to Listeria monocytogenes infection in a preterm infant: A case report. Pediatr Neonatol 2023; 64:698-700. [PMID: 37604736 DOI: 10.1016/j.pedneo.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/11/2023] [Accepted: 07/18/2023] [Indexed: 08/23/2023] Open
Affiliation(s)
- Anri Amano
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Motomichi Nagafuji
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.
| | - Satoshi Fujiyama
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.
| | - Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan; Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan; Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Hitaka D, Fujiyama S, Nishihama Y, Ishii R, Hoshino Y, Hamada H, Miyazono Y, Nakayama SF, Takada H. Assessment of Alcohol Exposure From Alcohol-Based Disinfectants Among Premature Infants in Neonatal Incubators in Japan. JAMA Netw Open 2023; 6:e230691. [PMID: 36826814 PMCID: PMC9958524 DOI: 10.1001/jamanetworkopen.2023.0691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
IMPORTANCE The risk of premature infants in neonatal incubators exposed to evaporated alcohol from alcohol-based disinfectants (ABDs) is unknown. OBJECTIVE To assess alcohol concentrations in the peripheral blood of premature infants and neonatal incubators. DESIGN, SETTING, AND PARTICIPANTS A quality improvement study comparing 2 different populations before and after introduction of ABD practice (ABD-PRAC) was conducted in a neonatal intensive care unit of a single tertiary hospital in Japan. Participants included premature infants who were born before 34 weeks of gestational age and received medical care in neonatal incubators. The study consisted of 3 periods: (1) September 1, 2020, to August 1, 2021 (prospective observation of pre-ABD-PRAC, (2) August 2 to August 22, 2021 (introduction of ABD-PRAC to medical staff and parents in the neonatal intensive care unit), and (3) August 23, 2021, to March 31, 2022 (prospective observation of post-ABD-PRAC). No follow-up studies were initiated. INTERVENTIONS An ABD-PRAC that aimed to reduce alcohol evaporation from ABDs inside neonatal incubators was instituted: (1) place alcohol preps in the incubator just before use and remove them from the incubator as soon as possible and (2) withhold placing hands into the incubators until 60 seconds after using ABDs for disinfection (applied only to family members). MAIN OUTCOMES AND MEASURES Blood alcohol concentration and evaporated alcohol concentrations in neonatal incubators. RESULTS Disinfectant practice was assessed among 28 infants during the pre-ABD-PRAC (17 infants [10 girls]; median gestational age at birth, 29.4 [IQR, 26.3-30.3] weeks) and post-ABD-PRAC (11 infants [3 girls]; median gestational age at birth, 30.0 [IQR, 25.3-32.2] weeks) study periods. The median blood alcohol concentration was 7.0 (IQR, 5.4-9.3) mg/dL pre-ABD-PRAC and 4.2 (IQR, 2.5-7.2) mg/dL post-ABD-PRAC. The median evaporated alcohol concentration inside neonatal incubators during pre-ABD-PRAC during the day was 23.6 (IQR, 15.9-36.5) ppm and, at night, was 13.2 (IQR, 8.9-19.4) ppm; during post-ABD-PRAC, the concentration was 9.4 (IQR, 6.0-16.0) ppm during the day and 5.7 (IQR, 3.6-9.7) ppm at night. The introduction of ABD-PRAC at 22 weeks' corrected gestational age was associated with a lower blood alcohol concentration in premature infants: regression coefficient value, -8.3 (95% CI, -12.0 to -4.7). CONCLUSIONS AND RELEVANCE In this study, alcohol evaporated from ABDs was absorbed by premature infants in neonatal incubators. The findings suggest that introduction of ABD-PRAC was associated with lower alcohol concentrations in neonatal incubators and in the blood of premature infants.
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Affiliation(s)
- Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
| | - Satoshi Fujiyama
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
| | - Yukiko Nishihama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
| | - Ryota Ishii
- Department of Biostatistics, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yusuke Hoshino
- Department of Neonatology, Ibaraki Children's Hospital, Mito, Ibaraki, Japan
| | - Hiromi Hamada
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Shoji F. Nakayama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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5
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Hanaki M, Hitaka D, Miyazono Y, Takada H. Resuscitation of a full-term infant born with pulseless electrical activity. Pediatr Int 2023; 65:e15518. [PMID: 36847331 DOI: 10.1111/ped.15518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 02/16/2023] [Accepted: 02/23/2023] [Indexed: 03/01/2023]
Affiliation(s)
- Mai Hanaki
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
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Nakamura Y, Hitaka D, Kido T, Yaita K, Saeki S, Miyazono Y, Takada H. Massive thrombosis in internal jugular phlebectasia in Menkes disease. Pediatr Int 2023; 65:e15667. [PMID: 37888729 DOI: 10.1111/ped.15667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/14/2023] [Accepted: 09/01/2023] [Indexed: 10/28/2023]
Affiliation(s)
- Yuri Nakamura
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Takahiro Kido
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Katsuyuki Yaita
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Saki Saeki
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
- Department of Child Health, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
- Department of Child Health, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
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7
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Nagafuji M, Hitaka D, Iwabuchi A, Miyazono Y, Takada H. A Neonate with a Diagnosis of Pontocerebellar Hypoplasia Type 6 Treated with Biotin and Developed Biotin Interference with Laboratory Thyroid Function Tests. Am J Case Rep 2021; 22:e934417. [PMID: 34930889 PMCID: PMC8711254 DOI: 10.12659/ajcr.934417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Patient: Male, 2-year-old
Final Diagnosis: Pontocerebellar hypoplasia type 6
Symptoms: Feeding problems • lactic acidosis
Medication: —
Clinical Procedure: —
Specialty: Endocrinology and Metabolic
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Affiliation(s)
- Motomichi Nagafuji
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Atsushi Iwabuchi
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Matsumoto T, Fukushima H, Fujiyama S, Nagatomo K, Hosaka S, Suzuki R, Yamaki Y, Kanai Y, Shibata H, Yasumi T, Isshiki K, Kato M, Miyazono Y, Takada H. A case of fetal-onset type 3 familial hemophagocytic lymphohistiocytosis surviving without severe complications after early diagnosis and treatment. Pediatr Blood Cancer 2021; 68:e29016. [PMID: 33769695 DOI: 10.1002/pbc.29016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 12/26/2022]
Affiliation(s)
- Takashi Matsumoto
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Hiroko Fukushima
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Satoshi Fujiyama
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Kumie Nagatomo
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Sho Hosaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Ryoko Suzuki
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yuni Yamaki
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Yu Kanai
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hirofumi Shibata
- Department of Pediatrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takahiro Yasumi
- Department of Pediatrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kyohei Isshiki
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Motohiro Kato
- Children's Cancer Center, National Center for Child Health and Development, Tokyo, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
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9
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Murakami T, Sugiura Y, Okamoto F, Okamoto Y, Kato A, Hoshi S, Nagafuji M, Miyazono Y, Oshika T. Comparison of 5-year safety and efficacy of laser photocoagulation and intravitreal bevacizumab injection in retinopathy of prematurity. Graefes Arch Clin Exp Ophthalmol 2021; 259:2849-2855. [PMID: 33744981 DOI: 10.1007/s00417-021-05137-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/18/2021] [Accepted: 03/02/2021] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To compare laser photocoagulation and intravitreal injection of bevacizumab (IVB) treatment for retinopathy of prematurity (ROP). METHODS The study included 52 eyes of 26 patients after ROP treatment who were observed up to 5 years of age. Twenty-eight eyes received laser photocoagulation as the initial treatment (laser group), and twenty-four eyes underwent IVB (IVB group). We collected data on gestational age, birth weight, 1- and 5-min Apgar scores, zone and stage at the time of treatment, recurrence of ROP and best-corrected visual acuity (BCVA) (logMAR), equivalent spherical value (SE), ocular complications, and developmental delay at the age of 5. RESULTS More zone I low-stage eyes were treated with IVB than laser. There was no difference in BCVA (p = 0.836). Although the mean SE was not different between the groups (p = 0.280), the prevalence of myopia was significantly higher in the laser group (p = 0.020). Developmental delay was observed in 3 of 14 and 3 of 12 cases in the laser and IVB groups, respectively (p = 0.596). Retinal holes were observed in 2 eyes in the IVB group, with 1 developing localized retinal detachment. There were no significant differences between the groups in the other factors. CONCLUSIONS Compared to laser for ROP, IVB was not inferior in neurodevelopment or visual outcome and was superior in refractive error. As cases in the IVB group showed retinal holes, long-term follow-up with fundus examination is recommended after IVB.
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Affiliation(s)
- Tomoya Murakami
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan.
| | - Yoshimi Sugiura
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Fumiki Okamoto
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yoshifumi Okamoto
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Atsuko Kato
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Sujin Hoshi
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan
| | - Motomichi Nagafuji
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yayoi Miyazono
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Tetsuro Oshika
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8575, Japan
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10
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Miyazono Y, Arai J, Kanai Y, Hitaka D, Kajikawa D, Takeuchi S, Nagafuji M, Fujiyama S, Saito M, Takada H. Nationwide survey of late-onset hemolysis in very low birthweight infants. Pediatr Int 2021; 63:172-176. [PMID: 33012035 PMCID: PMC7986906 DOI: 10.1111/ped.14493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/16/2020] [Accepted: 09/28/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND In Japan, some cases of late-onset acute hemolysis in very low birthweight (VLBW) infants have been reported. These cases had common features but the cause of hemolysis was unknown. The incidence and prognosis of this disease are also unknown. However, there are only few reports of such hemolytic episodes in countries other than Japan. Thus, this study aimed to examine the incidence and clinical course of late-onset acute hemolysis and to establish it as a new disease concept. METHODS A nationwide prospective survey was conducted from 2011 to 2015 as a rare disease surveillance project of the Japan Society for Neonatal Health and Development. RESULTS Twenty-four cases were confirmed. The median (range) gestational age, birthweight, and onset of hemolytic episodes were 26 weeks and 2 days (23 weeks and 4 days-31 weeks and 2 days), 898 g (627-1,416 g), and 19 days after birth (9-33 days), respectively. Phototherapy, blood transfusion, and exchange transfusion were required in 22 (96%), 24 (100%), and 7 (29%) cases, respectively. During the observation period, no recurrence of the hemolytic episode occurred. All patients survived; however, one case developed kernicterus and suffered severe neurological sequelae. CONCLUSIONS In this study, at least 1 out of 1,259 VLBW infants developed hemolysis at 9-33 days after birth in Japan. Owing to the risk of kernicterus, this disease should be recognized as among the important pathological conditions of VLBW infants, suggesting the need to manage jaundice and anemia until 5 weeks after birth.
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Affiliation(s)
- Yayoi Miyazono
- Departments of, Department of, Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.,Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Junichi Arai
- Department of, Neonatology, Ibaraki Children's Hospital, Mito, Japan
| | - Yu Kanai
- Departments of, Department of, Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.,Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Daisuke Hitaka
- Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Daigo Kajikawa
- Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Shusuke Takeuchi
- Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Motomichi Nagafuji
- Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Satoshi Fujiyama
- Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Makoto Saito
- Departments of, Department of, Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.,Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
| | - Hidetoshi Takada
- Departments of, Department of, Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.,Department of, Pediatrics, University of Tsukuba Hospital, Tsukuba, Japan
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11
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Uchiyama Y, Yamaguchi D, Iwama K, Miyatake S, Hamanaka K, Tsuchida N, Aoi H, Azuma Y, Itai T, Saida K, Fukuda H, Sekiguchi F, Sakaguchi T, Lei M, Ohori S, Sakamoto M, Kato M, Koike T, Takahashi Y, Tanda K, Hyodo Y, Honjo RS, Bertola DR, Kim CA, Goto M, Okazaki T, Yamada H, Maegaki Y, Osaka H, Ngu LH, Siew CG, Teik KW, Akasaka M, Doi H, Tanaka F, Goto T, Guo L, Ikegawa S, Haginoya K, Haniffa M, Hiraishi N, Hiraki Y, Ikemoto S, Daida A, Hamano SI, Miura M, Ishiyama A, Kawano O, Kondo A, Matsumoto H, Okamoto N, Okanishi T, Oyoshi Y, Takeshita E, Suzuki T, Ogawa Y, Handa H, Miyazono Y, Koshimizu E, Fujita A, Takata A, Miyake N, Mizuguchi T, Matsumoto N. Efficient detection of copy-number variations using exome data: Batch- and sex-based analyses. Hum Mutat 2020; 42:50-65. [PMID: 33131168 DOI: 10.1002/humu.24129] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/29/2020] [Accepted: 10/15/2020] [Indexed: 12/16/2022]
Abstract
Many algorithms to detect copy number variations (CNVs) using exome sequencing (ES) data have been reported and evaluated on their sensitivity and specificity, reproducibility, and precision. However, operational optimization of such algorithms for a better performance has not been fully addressed. ES of 1199 samples including 763 patients with different disease profiles was performed. ES data were analyzed to detect CNVs by both the eXome Hidden Markov Model (XHMM) and modified Nord's method. To efficiently detect rare CNVs, we aimed to decrease sequencing biases by analyzing, at the same time, the data of all unrelated samples sequenced in the same flow cell as a batch, and to eliminate sex effects of X-linked CNVs by analyzing female and male sequences separately. We also applied several filtering steps for more efficient CNV selection. The average number of CNVs detected in one sample was <5. This optimization together with targeted CNV analysis by Nord's method identified pathogenic/likely pathogenic CNVs in 34 patients (4.5%, 34/763). In particular, among 142 patients with epilepsy, the current protocol detected clinically relevant CNVs in 19 (13.4%) patients, whereas the previous protocol identified them in only 14 (9.9%) patients. Thus, this batch-based XHMM analysis efficiently selected rare pathogenic CNVs in genetic diseases.
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Affiliation(s)
- Yuri Uchiyama
- Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan.,Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | | | - Kazuhiro Iwama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Clinical Genetics Department, Yokohama City University Hospital, Yokohama, Japan
| | - Kohei Hamanaka
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Naomi Tsuchida
- Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan.,Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hiromi Aoi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Obstetrics and Gynecology, Faculty of Medicine Juntendo University, Tokyo, Japan
| | - Yoshiteru Azuma
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Toshiyuki Itai
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Ken Saida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hiromi Fukuda
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Futoshi Sekiguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Tomohiro Sakaguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Ming Lei
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Sachiko Ohori
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Masamune Sakamoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.,Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Takayoshi Koike
- National Epilepsy Center, NHO Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - Yukitoshi Takahashi
- National Epilepsy Center, NHO Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - Koichi Tanda
- Department of Pediatrics, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan
| | - Yuki Hyodo
- Department of Child Neurology, Okayama University Hospital, Okayama, Japan
| | - Rachel S Honjo
- Unidade de Genetica do Instituto da Crianca do Hospital das Clinicas da Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Debora Romeo Bertola
- Unidade de Genetica do Instituto da Crianca do Hospital das Clinicas da Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Chong Ae Kim
- Unidade de Genetica do Instituto da Crianca do Hospital das Clinicas da Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Masahide Goto
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Tetsuya Okazaki
- Department of Brain and Neurosciences, Division of Child Neurology, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Hiroyuki Yamada
- Department of Brain and Neurosciences, Division of Child Neurology, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Yoshihiro Maegaki
- Department of Brain and Neurosciences, Division of Child Neurology, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Lock-Hock Ngu
- Department of Genetics, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
| | - Ch'ng G Siew
- Department of Genetics, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
| | - Keng W Teik
- Department of Genetics, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
| | - Manami Akasaka
- Department of Pediatrics, Iwate Medical University School of Medicine, Morioka, Japan
| | - Hiroshi Doi
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Fumiaki Tanaka
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Tomohide Goto
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Long Guo
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Kazuhiro Haginoya
- Department of Pediatric Neurology, Miyagi Children's Hospital, Sendai, Japan
| | - Muzhirah Haniffa
- Department of Genetics, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
| | - Nozomi Hiraishi
- Department of Pediatrics, Yokohama City University Medical Center, Yokohama, Japan
| | - Yoko Hiraki
- Hiroshima Municipal Center for Child Health and Development, Hiroshima, Japan
| | - Satoru Ikemoto
- Division of Neurology, Saitama Children's Medical Center, Saitama, Japan
| | - Atsuro Daida
- Division of Neurology, Saitama Children's Medical Center, Saitama, Japan
| | - Shin-Ichiro Hamano
- Division of Neurology, Saitama Children's Medical Center, Saitama, Japan
| | - Masaki Miura
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Pediatrics, Nagaoka Red Cross Hospital, Nagaoka, Japan
| | - Akihiko Ishiyama
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Osamu Kawano
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Akane Kondo
- Clinical Genetics Center, Shikoku Medical Center for Children and Adults, National Hospital Organization, Kagawa, Japan
| | - Hiroshi Matsumoto
- Department of Pediatrics, National Defense Medical College, Saitama, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Tohru Okanishi
- Department of Brain and Neurosciences, Division of Child Neurology, Faculty of Medicine, Tottori University, Yonago, Japan.,Department of Child Neurology, Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Hamamatsu, Japan
| | - Yukimi Oyoshi
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Eri Takeshita
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Toshifumi Suzuki
- Department of Obstetrics and Gynecology, Faculty of Medicine Juntendo University, Tokyo, Japan
| | - Yoshiyuki Ogawa
- Department of Hematology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hiroshi Handa
- Department of Hematology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yayoi Miyazono
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Atsushi Takata
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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12
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Kato A, Okamoto Y, Okamoto F, Saito M, Miyazono Y, Oshika T. Short-term intraocular pressure changes after intravitreal injection of bevacizumab for retinopathy of prematurity. Jpn J Ophthalmol 2019; 63:262-268. [DOI: 10.1007/s10384-019-00661-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 12/21/2018] [Indexed: 11/25/2022]
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13
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Hitaka D, Morisaki N, Miyazono Y, Piedvache A, Nagafuji M, Takeuchi S, Kajikawa D, Kanai Y, Saito M, Takada H. Neonatal outcomes of very low birthweight infants born to mothers with hyperglycaemia in pregnancy: a retrospective cohort study in Japan. BMJ Paediatr Open 2019; 3:e000491. [PMID: 31414064 PMCID: PMC6668750 DOI: 10.1136/bmjpo-2019-000491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE To examine the mortality and morbidities of very low birthweight (VLBW, <1500 g) infants of mothers with hyperglycaemia in pregnancy. DESIGN AND SETTING We conducted a retrospective cohort study using data from the Neonatal Research Network of Japan, a nationwide registry of VLBW infants (2003-2012). PATIENTS We studied 29 626 infants born at 23 to 32 weeks without major congenital anomalies, of which 682 (2.3%) infants were from pregnancies affected by maternal hyperglycaemia. MAIN OUTCOME MEASURES The primary outcome was hospital mortality. Secondary outcomes were neonatal morbidities and their anthropometric values. Associations between maternal hyperglycaemia and each outcome were observed for the overall period, and statistical tests for interaction were conducted to assess whether they differed before or after the adoption of the International Association of Diabetes in Pregnancy Study Group (IADPSG) guidelines in 2010 for the diagnosis of gestational diabetes mellitus. RESULTS Overall, hospital mortality (4.1% vs 5.2%), composite outcomes of mortality and severe morbidity (54.2% vs 60%), and anthropometric values were not significantly different between infants of mothers with or without hyperglycaemia in pregnancy. However, the incidence of respiratory distress syndrome (RDS) in VLBW infants from mothers with hyperglycaemia was significantly higher than those from mothers without it only before (relative risk (RR) 1.09, 95% CI 1.00 to 1.19) and not after (RR 0.97, 95% CI 0.83 to 1.11) the adoption of the IADPSG guidelines. CONCLUSION VLBW infants born to mothers with hyperglycaemia in pregnancy do not seem to be at higher risk of mortality and morbidities, except for RDS only before the adoption of the IADPSG guidelines.
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Affiliation(s)
- Daisuke Hitaka
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Naho Morisaki
- Department of Social Medicine, National Center for Child Health and Development, Setagayaku, Tokyo, Japan
| | - Yayoi Miyazono
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Aurelie Piedvache
- Department of Social Medicine, National Center for Child Health and Development, Setagayaku, Tokyo, Japan
| | - Motomichi Nagafuji
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Syusuke Takeuchi
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Daigo Kajikawa
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Yu Kanai
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Makoto Saito
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hidetoshi Takada
- Department of Pediatrics, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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14
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Yamaoka Y, Tamiya N, Watanabe A, Miyazono Y, Tanaka R, Matsuzawa A, Sumazaki R. Hospital-based care utilization of children with medical complexity in Japan. Pediatr Int 2018; 60:626-633. [PMID: 29676518 DOI: 10.1111/ped.13586] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 03/12/2018] [Accepted: 04/03/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Few studies have investigated the hospital-based care utilization of children with medical complexity (CMC) in Japan. This study examined the frequency and differences in hospital-based care utilization for CMC according to the level of medical complexity (moderate and severe). METHODS Medical records of three pediatric tertiary hospitals in one prefecture were examined in 2014. We examined the number of outpatient visits and of admissions to the hospital for CMC in the 5 years after the introduction of home medical care. RESULTS Of 92 CMC, 55 had medical complexity that was moderate (CMC-moderate) and 37 had medical complexity that was severe (CMC-severe). The number of CMC who had medical care introduced at home had increased year by year, especially that of CMC <2 years old; the number of older CMC (i.e. 7-17 years old) had also increased in 2010-2014. The median total outpatient visits was 20 (IQR, 13-29 visits) for CMC-moderate and 20 (IQR, 17-26 visits) for CMC-severe in the first year. CMC-severe had significantly longer length of admissions in the 5 years than CMC-moderate. The number of total visits and admissions during the subsequent 4 years (from the second to the fifth year) was slightly decreased compared with the first year, but this was not significantly different. CONCLUSIONS CMC had high utilization of hospital-based care, and consistently utilized hospital-based care in the 5 years after the introduction of home medical care. Further study is needed to examine both hospital-based and home/community-based services use.
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Affiliation(s)
- Yui Yamaoka
- Department of Health Services Research, University of Tsukuba, Tsukuba, Japan.,Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Nanako Tamiya
- Department of Health Services Research, University of Tsukuba, Tsukuba, Japan
| | | | - Yayoi Miyazono
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Ryuta Tanaka
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.,Ibaraki Children's Hospital, Mito, Japan
| | - Akemi Matsuzawa
- Graduate School of Nursing, Ibaraki Christian University, Hitachi, Japan
| | - Ryo Sumazaki
- Department of Child Health, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
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15
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Fujii S, Tanaka H, Ono K, Onizawa Y, Miyazono Y, Sakamoto N, Gotoh C, Urita Y, Shinkai T, Takayasu H, Sumazaki R, Masumoto K. Gastric outlet obstruction caused by an ectopic pancreas in a neonate: A case report. Journal of Pediatric Surgery Case Reports 2015. [DOI: 10.1016/j.epsc.2015.10.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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16
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Abstract
We describe a female neonate with large flaccid pustules on her trunk and extremities. Cultures were negative, and a Wright-stained smear of pustule contents showed numerous eosinophils (>90%). The pustules resolved without leaving pigmentation after 2 weeks. We diagnosed this case as sterile transient neonatal pustulosis.
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Affiliation(s)
- Yasuhiro Fujisawa
- Departments of Dermatology, University of Tsukuba, Tsukuba City, Ibaraki, Japan
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17
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Mayumi M, Obata-Yasuoka M, Ogura T, Hamada H, Miyazono Y, Yoshikawa H. Discordance in Pena-Shokeir phenotype/fetal akinesia deformation sequence in a monoamniotic twin. J Obstet Gynaecol Res 2012; 39:344-6. [DOI: 10.1111/j.1447-0756.2012.01930.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Saito M, Kamoda T, Nishimura K, Miyazono Y, Kanai Y, Kato Y, Iwabuchi A, Fukushima H, Hamada H, Arinami T, Sumazaki R, Noguchi E. Association of adiponectin polymorphism with cord blood adiponectin concentrations and intrauterine growth. J Hum Genet 2011; 57:109-14. [DOI: 10.1038/jhg.2011.134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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19
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Obata-Yasuoka M, Hamada H, Ohara R, Nakao A, Miyazono Y, Yoshikawa H. Alveolar capillary dysplasia associated with duodenal atresia: Ultrasonographic findings of enlarged, highly echogenic lungs and gastric dilatation in a third-trimester fetus. J Obstet Gynaecol Res 2011; 37:937-9. [DOI: 10.1111/j.1447-0756.2010.01447.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Saito M, Nishimura K, Nozue H, Miyazono Y, Kamoda T. Changes in serum adiponectin levels from birth to term-equivalent age are associated with postnatal weight gain in preterm infants. Neonatology 2011; 100:93-8. [PMID: 21273794 DOI: 10.1159/000322654] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Accepted: 11/04/2010] [Indexed: 01/17/2023]
Abstract
BACKGROUND Adiponectin, one of the adipocytokines, is postulated to play a key role in fetal growth, probably enhancing the growth-promoting effect of insulin through insulin-sensitizing action. OBJECTIVES AND METHODS To examine how different intrauterine or postnatal growth patterns relate to adiponectin secretion, we measured serum adiponectin concentrations in 30 appropriate-for-gestational-age (AGA) and 19 small-for-gestational-age (SGA) preterm infants on the first day of life and at term-equivalent age. RESULTS The serum levels of adiponectin increased significantly in all preterm infants from birth to term-equivalent age. The adiponectin levels at term-equivalent age were significantly higher in the AGA than in the SGA group [mean (SD) 40.4 (12.3) vs. 28.4 (10.4) μg/ml; p < 0.01] after adjustment for gestational age or term-equivalent body weight. The increase in adiponectin levels from birth to term-equivalent age was significantly higher in the AGA than in the SGA group, and was positively correlated with the weight gain rate (g/kg/day) in the combined groups (r = 0.37, p < 0.01). A multiple regression analysis with the adiponectin increase from birth to term-equivalent age as the dependent variable for all the subjects revealed that only weight gain rate was independently associated with the adiponectin increase. CONCLUSIONS Our results suggest that the change in serum adiponectin levels may reflect postnatal growth from birth to term-equivalent age in preterm infants.
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Affiliation(s)
- Makoto Saito
- Department of Pediatrics, University of Tsukuba, Tsukuba, Japan
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21
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Saito Y, Hayashi M, Miyazono Y, Shimogama T, Ohno K. Arthrogryposis multiplex congenita with callosal agenesis and dentato-olivary dysplasia. Brain Dev 2006; 28:261-4. [PMID: 16368213 DOI: 10.1016/j.braindev.2005.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2005] [Revised: 07/13/2005] [Accepted: 08/07/2005] [Indexed: 11/16/2022]
Abstract
We report the autopsy case of a boy with arthrogryposis multiplex congenita, associated with callosal agenesis and dentato-olivary dysplasia. The patient manifested with dysmorphic facial features and suffered from intractable epilepsy during the neonatal period. These sets of complications suggest that a common molecular mechanism may be involved in the development of corpus callosum and the folding of the dentate and inferior olivary nuclei. Deep brain structures, including the brainstem and the cerebellum, may be involved in the pathophysiology of symptomatic generalized epilepsy. The differential diagnoses for the clinical and pathological characteristics of this patient are discussed.
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Affiliation(s)
- Yoshiaki Saito
- Department of Child Neurology, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, Yonago 683-8504, Japan.
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22
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Abstract
BACKGROUND Gastrointestinal toxicity is one of the most serious side effects in the methotrexate (MTX) treatment. However, the mechanism of the toxicity has not been completely clarified, which may be the reason why symptomatic therapy is carried out. On the other hand, the oxidative stress is known to play an important role in various diseases and drug-induced side effects. In this study the focus was on the oxidative stress in order to clarify the mechanism of MTX-induced small intestinal damage, especially neutrophil infiltration. METHODS MTX (20 mg/kg body wt) was administered to rats intravenously. Mucosal homogenates were prepared from the small intestine and used for assay of biochemical parameters, by which induction of oxidative stress and neutrophil infiltration were evaluated. N-acetylcysteine (NAC; 80 mg/kg body wt), an antioxidant or sodium tungstate (tungsten; 0.7 g/kg body wt), an inhibitor of xanthine dehydrogenase (XD)/xanthine oxidase (XO) known as an important source of reactive oxygen species (ROS) was given to rats with MTX to investigate the contribution of ROS to neutrophil infiltration. RESULTS The MTX treatment of rats induced the oxidative stress in the small intestine. The ROS production was seen preceding an increase of myeloperoxidase activity, which suggested neutrophil infiltration. Both treatments of NAC and tungsten prevented the MTX-induced ROS production and neutrophil infiltration. CONCLUSIONS These results suggest that oxidative stress plays an important role in the MTX-induced small intestinal damage, especially neutrophil infiltration. Thus, the modulation of oxidative stress would be useful in reducing intestinal damage in MTX treatment.
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Affiliation(s)
- Y Miyazono
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
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23
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Miyazono Y, Kamogawa Y, Ryo K, Furukawa T, Mitsuhashi M, Yamauchi K, Kameoka T, Hayashi N. Effect of B7.1-transfected human colon cancer cells on the induction of autologous tumour-specific cytotoxic T cells. J Gastroenterol Hepatol 1999; 14:997-1003. [PMID: 10530496 DOI: 10.1046/j.1440-1746.1999.01990.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
BACKGROUND The induction of tumour-specific immunity is important for advanced cancer therapy. There are many molecules, including costimulatory molecules, that have been identified as the activator for tumour-specific T cells. METHODS To induce autologous tumour-specific cytotoxic T lymphocytes (CTL) more effectively, we studied whether the expression of the B7 gene may render human colon cancer cells able to stimulate autologous peripheral blood mononuclear cells (PBMC) to become tumour-specific cytotoxic T cells. After the establishment of a B7.1 gene transfected tumour cell line, Cw2/B7.1, we first examined its stimulatory effect on autologous PBMC and subsequently, its effect on the induction of parental cell (Cw2)-specific CTL. RESULTS The results showed that Cw2/B7.1 had a more potent stimulatory effect on PBMC for the induction of both proliferation and cytotoxicity than Cw2. By adding a low dose of interleukin-2, Cw2/B7.1-activated killer cell activity was significantly increased. The specificity of Cw2/B7.1-activated killer cells was demonstrated by the absence of their cytotoxicity to either human lymphocyte antigen (HLA)-A33 identical (ORF) or HLA-non-identical (MT) allogenic colon cancer cell lines. Furthermore, such Cw2-specific cytotoxic activity was significantly reduced by the deletion of CD8+ cells but not CD4+ cells, indicating that these killer cells were mainly CD8+ T cells. CONCLUSIONS Thus, our results demonstrate that, by using B7.1 gene-transfected tumour cell lines, we effectively induced autologous tumour-specific CTL. These results will provide us with new tools for adoptive immunotherapy for colon cancer patients.
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Affiliation(s)
- Y Miyazono
- Division of Medicine, Institute of Gastroenterology, Tokyo Women's Medical University, Japan
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Abstract
To investigate the features of erythrocyte metabolism in extremely immature infants, we assayed 21 enzyme activities and glutathione level in cord erythrocytes from 28 extremely low-birth-weight infants (ELBWI; defined as birth weight <1,000 g). The results were compared with those from normal adults and non-neonatal reticulocyte-rich controls. Statistical analysis revealed that activities of six enzymes (glucosephosphate isomerase, phosphoglycerate kinase, monophosphoglycerate mutase, enolase, glucose-6-phosphate dehydrogenase (G6PD), and glutathione reductase) were significantly higher, and those of eight other enzymes (phosphofructokinase, 6-phosphogluconate dehydrogenase (6PGD), glutathione peroxidase, adenylate kinase, adenosine deaminase, acetylcholinesterase, NADH methemoglobin reductase, and catalase) were lower in ELBWI taking their marked reticulocytosis into consideration. The 6PGD/G6PD ratio, which is consistently unchanged under various physiological and pathological conditions, was markedly reduced in ELBWI. Our results support the previous reports that neonatal erythrocytes have a unique metabolic pattern which is different from that of adult erythrocytes, and also suggest that the 6PGD/G6PD ratio might be an index for the developmental immaturity of fetal erythrocytes. This is the first report describing the pattern of erythrocyte enzyme activities in ELBWI.
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Affiliation(s)
- Y Miyazono
- Department of Neonatology, Ibaraki Children's Hospital, Mito, Japan
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Hidaka H, Katakami H, Miyazono Y, Matsukura S. MRI findings in the hypopharynx and the larynx of a patient with acromegaly associated with severe obstructive sleep apnea syndrome. Endocr J 1999; 46 Suppl:S105-8. [PMID: 12054109 DOI: 10.1507/endocrj.46.suppl_s105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- H Hidaka
- 3rd Department of Internal Medicine, Miyazaki Medical College, Kiyotake, Japan
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Miyazono Y, Kisanuki A, Toyonaga K, Matsushita R, Otsuji Y, Arima S, Nakao S, Tanaka H. Usefulness of adenosine triphosphate-atropine stress echocardiography for detecting coronary artery stenosis. Am J Cardiol 1998; 82:290-4. [PMID: 9708655 DOI: 10.1016/s0002-9149(98)00345-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
There have been few studies on adenosine triphosphate (AT) stress echocardiography. The AT stress test may have fewer adverse effects than the adenosine stress test. The addition of atropine to AT echocardiography may enhance the sensitivity for detection of coronary artery disease (CAD). The purpose of this study was to determine the utility of AT-atropine echocardiography for detection of CAD. The group studied consisted of 112 patients with suspected CAD. Sixty-one patients did not have a history of prior myocardial infarction (group I) and 51 patients did (group II). AT was infused intravenously at 180 microg/kg/min for 14 minutes. Atropine (0.25 mg intravenously, repeated up to maximum total dose of 1 mg) was administered starting after 8 minutes of AT infusion. Ischemic response was defined as new or worsening wall motion abnormality occurring during the infusion. The sensitivity and specificity for detection of CAD were assessed using the representative echocardiograms during single AT infusion and AT-atropine infusion. Sixty-two patients had CAD. Fifty-eight patients (52%) developed minor side effects that resolved promptly. The rate-pressure product (10(3)/mm Hg beats/min) was significantly increased at 12 minutes of infusion (12.4+/-3.2) compared with that at baseline (9.1+/-2.3) and that at 6 minutes of infusion (9.4+/-2.1). The sensitivity for detection of CAD was 45% for AT echocardiography and 74% for AT-atropine echocardiography. The specificity was 94% for AT echocardiography and 90% for AT-atropine echocardiography. The sensitivity and specificity of AT-atropine echocardiography was 78% and 93%, respectively, in group I, and 70% and 86%, respectively, in group II. In conclusion, AT-atropine stress echocardiography seems to be well tolerated, safe, and useful for detection of CAD.
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Affiliation(s)
- Y Miyazono
- First Department of Internal Medicine, Faculty of Medicine, Kagoshima University, Kagoshima City, Japan
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27
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Kimura T, Haruta I, Isobe Y, Ueno E, Toda J, Nemoto Y, Ishikawa K, Miyazono Y, Shimizu K, Yamauchi K, Hayashi N. A novel therapeutic approach for rectal varices: a case report of rectal varices treated with double balloon-occluded embolotherapy. Am J Gastroenterol 1997; 92:883-6. [PMID: 9149207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We present a patient with continuous melena, diagnosed as rectal varices bleeding. She had a history of esophageal varices, which was treated by endoscopic ligation therapy. Eight years after the treatment of esophageal varices, the continuous melena began. Colonoscopic examination showed that the melena was caused by rectal varices, which were so severe that they could not be treated by either endoscopic sclerotherapy or surgical devascularization. Taking into considering the overall risk of treating rectal varices, we chose the approach of double balloon-occluded embolotherapy (DBOE) with 5% ethanolamine oleate with iopamodol as a liquid embolic material. DBOE is one of the interventional radiology techniques (Morita et al., Acta Hepatol Jpn 1994;35:109-120), but in this case was a completely new and novel clinical procedure for rectal varices. After the DBOE therapy, the condition of rectal varices was markedly improved. Thus, DBOE might be a new tool for treating inoperable rectal varices.
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Affiliation(s)
- T Kimura
- Department of Radiology, Tokyo Women's Medical College, Shinjuku-ku, Japan
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28
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Kisanuki A, Matsushita R, Murayama T, Otsuji Y, Miyazono Y, Toyonaga K, Nakao S, Taira A, Tanaka H. Transesophageal Doppler echocardiographic assessment of systolic and diastolic coronary blood flow velocities at baseline and during adenosine triphosphate-induced coronary vasodilation in chronic aortic regurgitation. Am Heart J 1997; 133:71-7. [PMID: 9006293 DOI: 10.1016/s0002-8703(97)70250-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Few reports exist on the changes in systolic and diastolic coronary flow velocities (CFVs) at baseline and during coronary vasodilation in patients with chronic aortic regurgitation (AR). We examined the left anterior descending CFVs in 21 patients with AR (11 patients with mild AR and 10 patients with moderate to severe AR), 9 patients without AR (no AR group), and 6 patients who had undergone surgery for moderate to severe AR (postoperation group) with transesophageal Doppler echocardiography. Adenosine triphosphate (ATP) was infused into a peripheral right arm vein at four different doses (35, 70, 100, and 140 micrograms/kg/min). Coronary flow velocity response in systole and diastole was calculated as the ratio of systolic peak and mean and diastolic peak and mean CFVs during maximal ATP infusion to those at baseline. The systolic peak and mean CFVs and the diastolic peak and mean CFVs at baseline were significantly increased in the moderate to severe group compared with those in the other groups (p < 0.05, respectively). Systolic and diastolic CFVs were significantly increased during ATP infusions in the four groups. No significant differences of systolic and diastolic CFVs were observed among the four groups during maximal ATP infusion. The coronary flow velocity response calculated from the peak and mean diastolic CFVs were significantly decreased in the moderate to severe group (1.6 +/- 0.3 and 1.7 +/- 0.4) compared with those in the other three groups (3.6 +/- 0.7 and 3.2 +/- 1.1 in the no AR group, 2.6 +/- 0.6 and 2.5 +/- 0.4 in the mild group, and 2.5 +/- 0.7 and 2.4 +/- 0.6 in the postoperation group) (p < 0.05, respectively). In conclusion, the systolic and diastolic left CFVs at baseline appeared to be significantly increased in patients with moderate to severe chronic AR. However, the velocities during coronary vasodilation by ATP were equal to those in other groups, resulting in a decrease of coronary flow velocity response in systole and diastole.
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Affiliation(s)
- A Kisanuki
- First Department of Internal Medicine, Faculty of Medicine, Kagoshima University, Japan
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29
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Kisanuki A, Murayama T, Matsushita R, Otsuji Y, Toyonaga K, Miyazono Y, Arima S, Nakao S, Taira A, Tanaka H. Transesophageal Doppler echocardiographic assessment of left coronary blood flow velocity in chronic aortic regurgitation. Am Heart J 1996; 131:101-6. [PMID: 8553995 DOI: 10.1016/s0002-8703(96)90057-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Assessment of systolic and diastolic coronary blood flow velocities (FVs) in patients with aortic regurgitation (AR) has remained a clinical challenge. We recorded left anterior descending coronary blood FV in 21 patients with chronic AR an in 6 control subjects using transesophageal pulsed Doppler echocardiography. In 7 patients FV was measured 4.0 +/- 5.2 months after aortic valve replacement. Peak and mean FVs during systole and diastole and systolic/diastolic ratios of these FVs were determined. Left ventricular (LV) mass index was calculated by means of standard M-mode echocardiography. In patients with severe AR, peak and mean systolic FVs were significantly increased (34 +/- 8 cm/sec and 21 +/- 6 cm/sec, respectively) compared with FVs in the control group (15 +/- 4 and 12 +/- 3 cm/sec, respectively) and in patients with mild AR (17 +/- 3 cm/sec and 13 +/- 2 cm/sec, respectively). Peak and mean systolic FVs were also significantly increased in severe AR (54 +/- 13 cm/sec and 33 +/- 9 cm/sec, respectively) compared with FVs in the control (30 +/- 8 cm/sec and 21 +/- 5 cm/sec, respectively) and mild AR groups (30 +/- 5 cm/sec and 21 +/- 4 cm/sec, respectively). Peak systolic and diastolic FVs were correlated significantly with LV mass index (r = 0.72 and r = 0.73, respectively). Systolic and diastolic FVs and LV mass index were significantly decreased, normalized or both after aortic valve surgery. In conclusion, LV mass seems to have an effect on the significantly increased systolic and diastolic left coronary blood FV pattern in patients with chronic, severe AR. Increased systolic and diastolic FV appears to be normalized in the late period after surgery.
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Affiliation(s)
- A Kisanuki
- First Department of Internal Medicine, Faculty of Medicine, Kagoshima University, Japan
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30
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Owada K, Wasada T, Miyazono Y, Yoshino H, Hasumi S, Kuroki H, Yano K, Maruyama A, Kawai K, Omori Y. Highly increased insulin secretion in a patient with postprandial hypoglycemia: role of glucagon-like peptide-1 (7-36) amide. Endocr J 1995; 42:147-51. [PMID: 7627258 DOI: 10.1507/endocrj.42.147] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The mechanism(s) of an inappropriate secretion of insulin is poorly understood. We report a case of reactive hypoglycemia associated with an unusually exaggerated insulin secretion. The patient, a 32-year-old man, developed frequent episodes of postprandial hypoglycemia after interferon treatment was begun for chronic type C hepatitis. Oral glucose challenge test confirmed the patient's extremely high plasma IRI response, i.e., more than 1000 microU/ml, and that of plasma C-peptide 56.9 ng/ml at 90 min, followed by symptomatic hypoglycemia (plasma glucose 34 mg/dl) at 240 min. The plasma proinsulin level also was high, but the molar ratio of immuno reactive insulin (IRI)/plasma C-peptide and IRI/proinsulin was within the normal range. Antibodies to insulin or insulin-receptor were negative. Plasma IRI response was apparently greater when the glucose was given orally than when given intravenously. The response of plasma glucagon-like-peptide (GLP)-1 to oral glucose was quite high (from baseline of 45.5 to 303.2 pmol/L) and showed a close parallel with the change in the plasma IRI concentration. The greatly enhanced insulin secretion leading to reactive hypoglycemia in this patient may therefore be attributed to the increased secretion of GLP-1.
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Affiliation(s)
- K Owada
- Diabetes Center, Tokyo Women's Medical College, Japan
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31
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Otsuji Y, Kisanuki A, Toda H, Kuroiwa R, Murayama T, Matsushita R, Toyonaga K, Miyazono Y, Nakao S, Tanaka H. Influence of left ventricular filling profile during preceding control beats on the occurrence of pulse deficit caused by ventricular premature contractions. Eur Heart J 1993; 14:1044-9. [PMID: 7691601 DOI: 10.1093/eurheartj/14.8.1044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
This study was designed to investigate whether the left ventricular filling profile during preceding control beats significantly affects the pulse deficit caused by ventricular premature contractions (VPCs). The study group consisted of 18 patients (10 men, eight women, 15-85 years old) who underwent electrophysiological catheterization because of sinus bradycardia. Using a temporary pacing lead inserted in the right ventricular apex, isolated VPCs with various coupling intervals were produced by electrical stimulation of the right ventricle. During the production of the VPCs, the mitral filling flow velocity using pulsed wave Doppler echocardiography, the femoral arterial pressure curve and the electrocardiogram were simultaneously recorded. The right ventricle was stimulated 800, 750, 700, 650, 600, 550, 500, 450 and 400 ms after the triggered control beat QRS complex. Pulse pressures during VPCs gradually decreased in relation to the shortening of the extrasystolic beat coupling interval. The longest coupling interval for each subject, which caused complete abolition of the pressure pulse during the VPC, was defined as the pulse deficit coupling interval. The early to late diastolic velocity-time integral ratio (Ei/Ai ratio) of the mitral filling flow velocity during the control beats which precede the VPC was obtained as an index expressing the left ventricular filling profile. The Ei/Ai ratio of the mitral filling flow velocity ranged from 0.7 to 4.5 (1.8 +/- 1.0). The pulse deficit coupling interval ranged from 440 to 640 ms (510 +/- 60 ms).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- Y Otsuji
- First Department of Internal Medicine, Faculty of Medicine, Kagoshima University, Japan
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32
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Haruta K, Sasaki M, Miyazono Y, Inada S, Watanabe S. Early changes of the M-wave of the quadriceps femoris muscle due to denervation in dogs. Nihon Juigaku Zasshi 1979; 41:319-23. [PMID: 470271 DOI: 10.1292/jvms1939.41.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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33
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Sasaki M, Miyazono Y, Inada S. An electromyographic study on the progress of training for the forearm-lifting response in the dog. Nihon Juigaku Zasshi 1979; 41:19-30. [PMID: 430928 DOI: 10.1292/jvms1939.41.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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34
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Inada S, Sakamoto H, Haruta K, Miyazono Y, Sasaki M, Yamauchi C, Igata A, Osame M, Fukunaga H. A clinical study on hereditary progressive neurogenic muscular atrophy in Pointer dogs. Nihon Juigaku Zasshi 1978; 40:539-47. [PMID: 713214 DOI: 10.1292/jvms1939.40.539] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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