著者

Miyako Kishimoto Hisako Endo Shotaro Hagiwara Akiyoshi Miwa Mitsuhiko Noda

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.57, no.3,4, pp.345-349, 2010 (Released:2010-09-14)

参考文献数

11

被引用文献数

10 17

---

Excessive iron storage sometimes causes diabetes in patients with hemochromatosis, a disease caused by iron overloading. We performed an immunohistochemical analysis to study an autopsy case of aplastic anemia and diabetic hemochromatosis caused by frequent blood transfusions, and extensive hemosiderin deposition was observed in the liver and pancreas. The pancreatic islets of the patient and a control subject were stained to detect glucagon, insulin, and proinsulin. Significantly lower levels of immunoreactivity with both insulin antibodies and proinsulin antibodies, but not with glucagon antibodies, was observed in the islet cells in the patient’s tissue than in the islet cells of the control. Hemosiderin deposition in the islets is known to be exclusively distributed in the β-cells, thus, selective iron-induced damage to the β-cells may have affected insulin synthesis and secretion and led to glucose intolerance in the patient. J. Med. Invest. 57: 345-349, August, 2010

著者

Yurika Numata‐Uematsu Hiroyuki Yokoyama Hiroki Sato Wakaba Endo Mitsugu Uematsu Chieko Nara Shigeo Kure

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.65, no.3.4, pp.280-282, 2018 (Released:2018-10-04)

参考文献数

10

被引用文献数

16 17

---

Many studies have reported many adverse effects of children's use of media. These effects include reduced cognitive development and hyperactivity and attention disorders. Although it has been recommended that child be kept away from the media during the early developmental period, many modern parents use the media as a way to calm their children. Consequently, these children lack the opportunity to form selective attachments by reduced social engagement. These children's symptoms occasionally mimic autism spectrum disorder (ASD). However, few studies have examined the symptoms children develop with early media exposure. Here, we present a boy exposed to the media during his early development who was diagnosed with attachment disorder. He was unable to make eye contact and was hyperactive and had delayed language development, like children with ASD. His symptoms improved dramatically after he was prevented from using all media and encouraged to play in other ways. After this treatment, he would make eye contact, and talked about playing with their parents. Simply avoiding the media and playing with others can change the behavior of a child with ASD‐like symptoms. It is important to understand the symptoms caused by attachment disorder and early media exposure. J. Med. Invest. 65:280‐282, August, 2018

著者

Nobuto Nakanishi Takuya Takashima Jun Oto

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.67, no.1.2, pp.1-10, 2020 (Released:2020-05-02)

参考文献数

114

被引用文献数

19

---

Critically ill patients exhibit prominent muscle atrophy, which occurs rapidly after ICU admission and leads to poor clinical outcomes. The extent of atrophy differs among muscles as follows: upper limb: 0.7%–2.4% per day, lower limb: 1.2%–3.0% per day, and diaphragm 1.1%–10.9% per day. This atrophy is caused by numerous risk factors such as inflammation, immobilization, nutrition, hyperglycemia, medication, and mechanical ventilation. Muscle atrophy should be monitored noninvasively by ultrasound at the bedside. Ultrasound can assess muscle mass in most patients, although physical assessment is limited to almost half of all critically ill patients due to impaired consciousness. Important strategies to prevent muscle atrophy are physical therapy and electrical muscular stimulation. Electrical muscular stimulation is especially effective for patients with limited physical therapy. Regarding diaphragm atrophy, mechanical ventilation should be adjusted to maintain spontaneous breathing and titrate inspiratory pressure. However, the sufficient timing and amount of nutritional intervention remain unclear. Further investigation is necessary to prevent muscle atrophy and improve long-term outcomes. J. Med. Invest. 67 : 1-10, February, 2020

著者

Yoshitoyo Ueno Koji Sato Kazuki Momota Hiroki Sato Yuki Nakano Yusuke Akimoto Toshiyuki Nunomura Natsuki Tane Taiga Itagaki Jun Oto

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.69, no.3.4, pp.266-272, 2022 (Released:2022-10-17)

参考文献数

35

被引用文献数

1

---

Purpose : High-flow nasal cannula oxygen therapy (HFNC) is a new type of non-invasive respiratory support for acute respiratory failure patients. However, patients receiving HFNC often develop sleep disturbances. We therefore examined whether dexmedetomidine could preserve the sleep characteristics in patients who underwent HFNC. Patients and Methods : This was a pilot, randomized controlled study. We assigned critically ill patients treated with HFNC to receive dexmedetomidine (0.2 to 0.7 µg / kg / h, DEX group) or not (non-DEX group) at night (9:00 p.m. to 6:00 a.m.). Polysomnograms were monitored during the study period. The primary outcomes were total sleep time (TST), sleep efficiency and duration of stage 2 non-rapid eye movement (stage N2) sleep. Results : Of the 28 patients who underwent randomization, 24 were included in the final analysis (12 patients per group). Dexmedetomidine increased the TST (369 min vs. 119 min, p = 0.024) and sleep efficiency (68% vs. 22%, P = 0.024). The duration of stage N2 was increased in the DEX group compared with the non-DEX group, but this finding did not reach statistical significance. The incidences of respiratory depression and hemodynamic instability were similar between the two groups. Conclusions : In critically ill patients who underwent HFNC, dexmedetomidine may optimize the sleep quantity without any adverse events. J. Med. Invest. 69 : 266-272, August, 2022

著者

Ryo Miyachi Ayaka Sano Nana Tanaka Misaki Tamai Junya Miyazaki

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.69, no.1.2, pp.38-44, 2022 (Released:2022-04-22)

参考文献数

25

---

Purpose:The purpose of this study was to clarify the differences in lumbar spine and hip joint motor control ability (MCA) in prone hip extension (PHE) between individuals with and without low back pain (LBP). It also aimed to determine the relationship between lumbar spine and hip joint MCA and lumbar perceptual awareness in individuals with LBP. Methods:In total, 78 university students (20 with LBP and 58 without) were included in the study. The MCA of the lumbar spine and hip joint in PHE and perceptual awareness were evaluated. The MCA of the lumbar spine and hip joint was measured using a wearable sensor. Subsequently, a comparison of the MCA of the lumbar spine and hip joints of the participants and the relationship between MCA and lumbar perceptual awareness were examined. Results:The MCA of the LBP group was higher than that of the non-LBP group in motion on the sagittal plane. In addition, perceptual awareness was negatively correlated with MCA in the sagittal plane in the lumbar spine. Conclusion:People with LBP had higher lumbar spine and hip joint MCA than those without LBP. Perceptual awareness was associated with lumbar spine and hip joint MCA in people with LBP. J. Med. Invest. 69 : 38-44, February, 2022

著者

Rie Hashimoto Atsuko Sakai Masumi Murayama Arisa Ochi Tomoki Abe Katsuya Hirasaka Ayako Ohno Shigetada Teshima-Kondo Hiroaki Yanagawa Natsuo Yasui Mikiko Inatsugi Daisuke Doi Masanori Takeda Rie Mukai Junji Terao Takeshi Nikawa

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.62, no.3.4, pp.177-183, 2015 (Released:2015-09-18)

参考文献数

20

被引用文献数

9 22

---

Background: In recent years, the number of bedridden people is rapidly increasing due to aging or lack of exercise in Japan. This problem is becoming more serious, since there is no countermeasure against it. In the present study, we designed to investigate whether dietary proteins, especially soy, had beneficial effects on skeletal muscle in 59 volunteers with various physical activities. Methods: We subjected 59 volunteers with various physical activities to meal intervention examination. Persons with low and high physical activities were divided into two dietary groups, the casein diet group and the soy diet group. They ate daily meals supplemented with 7.8 g of powdered casein or soy protein isolate every day for 30 days. Bedridden patients in hospitals were further divided into three dietary groups: the no supplementation diet group, the casein diet group and the soy diet group. They were also subjected to a blood test, a urinalysis, magnetic resonance imaging analysis and muscle strength test of the knee before and after the meal intervention study. Results: Thirty-day soy protein supplementation significantly increased skeletal muscle volume in participants with low physical activity, compared with 30-day casein protein supplementation. Both casein and soy protein supplementation increased the volume of quadriceps femoris muscle in bedridden patients. Consistently, soy protein significantly increased their extension power of the knee, compared with casein protein. Although casein protein increased skeletal muscle volume more than soy protein in bedridden patients, their muscle strength changes by soy protein supplementation were bigger than those by casein protein supplementation. Conclusions: The supplementation of soy protein would be one of the effective foods which prevent the skeletal muscle atrophy caused by immobilization or unloading. J. Med. Invest. 62: 177-183, August, 2015

著者

Yasuko Okamoto Takanori Sakaguchi Yoshito Ikematsu Toshikazu Kanai Kazuhisa Hirayama Hiroaki Tamura Tadataka Hayashi Yoshiro Nishiwaki Hiroyuki Konno Katsunori Aoki

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.70, no.3.4, pp.325-333, 2023 (Released:2023-11-09)

参考文献数

37

---

The effects of early enteral arginine-rich nutrition (EAN) were analyzed among patients undergoing curative-intent total gastrectomy for gastric cancer. There were 19 patients in this prospective study, all randomly assigned to either a parenteral nutrition (PN) group or an EAN group for the first seven days after surgery. The EAN group received 1.8-fold greater arginine (10.1 g/day) compared with the PN group, which was administered through an enteral tube inserted into the jejunal loop. Both groups were provided almost identical amounts of total amino acids (54 g/day), and the total energy was set at 65% of the total requirement (25 kcal/kg/day). No significant differences were observed between the two groups in postoperative complications, length of hospital stay, oral intake, nutritional status, or body weight. The serum arginine profile was similar in the two groups, as it decreased significantly on postoperative day (POD) 1, and gradually returned to preoperative levels by POD 7. The nitrogen balance remained negative until POD 7 in the PN group, but turned neutral at POD 7 in the EAN group. While we could not confirm body weight loss improvement, these results suggested that early arginine-rich enteral nutrition could improve the nitrogen balance after total gastrectomy. J. Med. Invest. 70 : 325-333, August, 2023

著者

Makoto Tachibana

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.62, no.1.2, pp.19-23, 2015 (Released:2015-03-27)

参考文献数

47

被引用文献数

12 14

---

Epigenetics is the study of changes in gene function that cannot be explained by changes in DNA sequence. A mammalian body contains more than two-hundred different types of cells, all derived from a single fertilized egg. Epigenetic gene regulation mechanisms essentially contribute to various processes of mammalian development. The essence of epigenetic regulation is the modulation of gene activity through changes in chromatin structure. DNA methylation and histone modifications are the major epigenetic mechanisms. Sex determination is the process of establishing a gender. Sry, the sex-determining gene in therian mammals, initiates testis differentiation. Recent studies have provided evidence that epigenetic mechanisms contribute to Sry regulation. J. Med. Invest. 62: 19-23, February, 2015

著者

Asuka Ito Hideyuki Nushida Hiromitsu Kurata Hitomi Umemoto Hirofumi Iseki Itsuo Tokunaga Akiyoshi Nishimura

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.70, no.1.2, pp.290-293, 2023 (Released:2023-05-11)

参考文献数

29

---

Complete decapitation due to suicide by hanging is rare. We report the case of a decapitated man who was found in the sea near an estuary. A polyethylene rope was tied to the handrail of the bridge across a strait near the site of the body. The rope was 12 mm in diameter and 19 m in length from the handrail. It ended with a slip knot noose, and skin and mustache-like hair fragments were attached to it. The decapitated head was not found. The deceased weighed 82 kg and was 152 cm long without the head. The autopsy revealed coarse abrasions and intramuscular hemorrhage around the severed edge. The third cervical spine was not fractured. We reviewed the literature and suggested the conditions of body weight, fall height, rope diameter, and number of rolls in cases of decapitation by hanging. We calculated the hanging decapitation index (HDI) as the fall height (m) multiplied by the body weight (kg), divided by the rope diameter (mm), divided by the number of rolls ; and discussed the differences between complete and incomplete decapitation cases. J. Med. Invest. 70 : 290-293, February, 2023

著者

Shigeru Aomura Hiromichi Nakadate Yuelin Zhang Takahiro Ueno Akiyoshi Nishimura

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.70, no.1.2, pp.213-220, 2023 (Released:2023-05-11)

参考文献数

21

---

In this paper the effectiveness of the support system which predicts the risk of the repetitive brain concussion is studied biomechanically. In the risk prediction system, the accident that caused the concussion is reconstructed by analyzing the game video via multibody dynamics and the resulting brain injury is calculated in detail by the finite element method. In order to calculate the aggravation of the brain injury by the repeated brain concussion, the following two methods are examined. In the first method, the material properties of the part of the brain damaged by the1st impact are changed in the simulation of the 2nd impact. In the second method, each brain damage caused by the repeated impacts is accumulated. The system was applied to the real-life accidents that occurred during Judo and American football games. As a result of the simulations, the aggravation of the brain damage due to repetitive concussion was determined numerically in terms of the maximum strain of the brain and the brain damage rate of the whole brain. The biomechanical process of the collision accidents and the resulting brain damage were reconstructed based on the video and the results are effective to prevent the future repeated concussion accidents. J. Med. Invest. 70 : 213-220, February, 2023

著者

Taiga Itagaki

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.69, no.3.4, pp.165-172, 2022 (Released:2022-10-17)

参考文献数

71

被引用文献数

1

---

Mechanical ventilation injures not only the lungs but also the diaphragm, resulting in dysfunction associated with poor outcomes. The chief mechanisms of ventilator-induced diaphragm dysfunction are : disuse atrophy due to insufficient contraction and excessive ventilatory support ; concentric load-induced injury due to excessive contraction and insufficient ventilatory support ; eccentric load-induced injury due to contraction during the expiratory phase ; and longitudinal atrophy caused by high positive end-expiratory pressure. To protect the diaphragm during mechanical ventilation, maintaining proper levels of diaphragm contraction is paramount ; thus, monitoring of respiratory effort and finely tuned ventilator settings are necessary. Furthermore, maintaining of synchronization between the patient and the ventilator is also important. As diaphragm dysfunction is more likely to occur in critically ill patients, diaphragm-protective mechanical ventilation strategies are essential to reduce the mortality rate of intensive care unit patients. This review outlines clinical evidence of ventilator-induced diaphragm dysfunction and its underlying mechanisms, and strategies to facilitate diaphragm-protective mechanical ventilation. J. Med. Invest. 69 : 165-172, August, 2022

著者

Tsuneo Ninomiya Hiroko Hashimoto Hiroe Tani Kenji Mori

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.64, no.1.2, pp.153-159, 2017 (Released:2017-03-29)

参考文献数

12

被引用文献数

1 6

---

Objective: To improve primary prevention of child maltreatment, the association between at-risk parents identified by maternity hospitals and local health centers and intervention outcomes was investigated. Methods: A screening program for primary prevention of child maltreatment has been implemented for parents with children aged<3 years in A Prefecture. At-risk parents are identified at maternity hospitals and local health centers. Public health nurses provide intervention to promote positive parenting through home visits, and referred to child protective centers when they suspect child maltreatment. Results: Between 2009 and 2014, a total of 2,252 new at-risk parents were identified, 956 from maternity hospitals and 1,296 from local health centers. Among these at-risk parents, 356 (15.8%) were referred to child protective centers for possible child maltreatment, 88 of which came from maternity hospitals and 268 from local health centers. The rate of referral from maternity hospitals was significantly lower than that from local health centers (9.2% vs. 20.7%, p<0.001). Conclusions: Identification of at-risk parents during pregnancy and early intervention resulted in a decrease in the rate of referrals to child protective centers. The specific risk factors of “perceived lack of social support”, “mental illness” and “teen pregnancy” may be mitigated by early intervention. J. Med. Invest. 64: 153-159, February, 2017

著者

Michiko Sato Teruhiro Morishita Takafumi Katayama Shigeko Satomura Hiroko Okuno Nami Sumida Masae Sakuma Hidekazu Arai Shinsuke Katoh Koichi Sairyo Akihiko Kawaura Eiji Takeda

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.67, no.1.2, pp.151-157, 2020 (Released:2020-05-02)

参考文献数

53

被引用文献数

8

---

A clearer understanding of skeletal muscle mass (SMM) in middle-aged and elderly individuals is important for maintaining functionality. In the present study, age-related changes in SMM, the threshold of SMM with walking difficulty, intestinal nutrient absorption rate, and various serum factors were examined in Japanese populations of different ages. We used 24-h creatinine excretion as a measure of total body SMM. Age-related decreases in SMM, intestinal nutrient absorption rates, and serum 25-hydroxyvitamin D [25(OH)D] concentrations were significantly higher in women than in men. The cut-off values for SMM (kg), its percentage of total body weight (BW), the SMM index [SMMI] (Kg / m2), and creatinine height index (CHI) (%) in elderly individuals with walking difficulty were approximately 8-10 kg, 17-20% of BW, 3.9-4.6 kg / m2, and 44%, respectively. Serum 25(OH)D concentrations were closely associated with SMM (kg, % of BW, kg / m2) and CHI (%) as well as the intestinal absorption rates of nitrogen (%) and phosphorus (%) in women, but not in men. The present results demonstrate that vitamin D is an important metabolic factor in skeletal muscle, and contributes to the optimal management of skeletal muscle and the prevention of sarcopenia. J. Med. Invest. 67 : 151-157, February, 2020

著者

Koichi Iwaki Toshinori Sakai Daisuke Hatayama Yohei Hayashi Nanae Inoue Miyuki Matsumoto Yusuke Hattori Tsuyoshi Goto Koichi Sairyo Shuichiro Tsuji

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.65, no.3.4, pp.177-183, 2018 (Released:2018-10-04)

参考文献数

17

被引用文献数

1 9

---

The purpose of this study was to evaluate the physical features of pediatric patients with lumbar spondylolysis (LS), factors that increase the load during compensatory movements at the lumbar spine, and the outcomes of rehabilitation. Twenty patients were included. Fifteen items were used:fingertip‐to‐floor distance (FFD), straight leg raising (SLR), heel‐to‐buttock distance (HBD), tightness of the rectus femoris, the lateral and medial rotator muscles, iliopsoas, tensor fascia lata, adductor muscles, soleus muscle, and latissimus dorsi, and trunk rotation, sit‐ups and endurance of the abdominal and back muscles. Initial findings were judged as positive or negative using previously reported cut‐off values and were re‐evaluated 2 or 3 months later. Positive tests were found for HBD and tightness of the rectus femoris in 85% of the patients, for endurance of the abdominal muscles in 75%, SLR and sit‐ups in 70%, and FFD and tightness of the external rotator muscles in 60%. The physical features varied according to the type of sport played, and some patients were refractory to rehabilitation. Only 17.6%, 33.3%, and 40.0% of patients with initially positive findings for HBD, tightness of the external rotator muscles, and endurance of the abdominal muscles, respectively, achieved improvements after rehabilitation. J. Med. Invest. 65:177‐183, August, 2018

著者

Junpei Nagasawa Kenichi Suzuki Sayori Hanashiro Masaru Yanagihashi Takehisa Hirayama Masaaki Hori Osamu Kano

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.70, no.3.4, pp.411-414, 2023 (Released:2023-11-09)

参考文献数

19

---

Introduction:Branch atheromatous disease (BAD) is a type of cerebral infarction caused by stenosis or occlusion at the entrance of the penetrating branch due to the presence of plaque. Despite its clinical significance, it is not clear how these plaques are formed. Focal geometrical characteristics are expected to be as important as vascular risk factors in the development of atherosclerosis. This study aimed to analyze the association between middle cerebral artery (MCA) geometric features and the onset of BAD. Shear stress results from the blood flow exerting force on the inner wall of the vessels and places with low wall shear stress may be prone to atherosclerosis. At the curvature of blood vessels, the shear stress is weak on the inside of the curve and plaque is likely to form. When this is applied to the MCA M1 segment, downward type M1 is likely to form plaques on the superior side. Because the lenticulostriate artery usually branches off from the superior side of the MCA M1 segment, in downward type M1, a plaque is likely to be formed at the entrance of the penetrating branch, and for that reason, BAD is likely to onset. Methods:We retrospectively reviewed hospitalized stroke patients with BAD and investigated the morphology of their MCA using magnetic resonance imaging. The M1 segment was classified as straight or curved. Additionally, we compared the difference between the symptomatic and the asymptomatic side. Data regarding patients’ medical history were also collected. Results:A total of 56 patients with lenticulostriate artery infarctions and BAD were analyzed. On the symptomatic side, downward type M1 accounted for the largest proportion at 44%, whereas on the asymptomatic side, it was the lowest, at 16%. Conclusion:A downward type MCA may be associated with the onset of BAD and the morphological characteristics might affect the site of plaque formation. J. Med. Invest. 70 : 411-414, August, 2023

著者

Sachiko Kurimoto Takako Minagawa Ayako Tamura

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.67, no.1.2, pp.113-123, 2020 (Released:2020-05-02)

参考文献数

25

被引用文献数

1 1

---

Purpose : The purpose of this study was to investigate the operating environment, degree of operating-room nurses’, and to clarify the job satisfaction, experience, and emotions categorized characteristics operating-room nurses. Method : The study surveyed 1177 operating-room nurses. For 38 questionnaire items, a 5-point Likert scale was applied regarding job satisfaction, workplace environment, experiences, and emotions. Classification was performed by cluster analysis based on operating-room nurses’ job satisfaction. Results : Results of cluster analysis were classified into five groups with unique characteristics based on factors such as age, years of nursing experience, years of operating-room nursing experience, workplace environment, experience, and emotion. Conclusion: Results suggest providing support tailored to characteristics of each of the five groups to optimize their job satisfaction. J. Med. Invest. 67 : 113-123, February, 2020

著者

Katsuya Morito Ryota Shimizu Hanif Ali Akina Shimada Tohru Miyazaki Naoko Takahashi M. Motiur Rahman Kazuki Tsuji Nobuyuki Shimozawa Michiyasu Nakao Shigeki Sano Momoyo Azuma Meera Nanjundan Kentaro Kogure Tamotsu Tanaka

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.70, no.3.4, pp.403-410, 2023 (Released:2023-11-09)

参考文献数

46

被引用文献数

1

---

X-linked adrenoleukodystrophy (X-ALD) is a genetic disorder associated with peroxisomal dysfunction. Patients with this rare disease accumulate very long-chain fatty acids (VLCFAs) in their bodies because of impairment of peroxisomal VLCFA ?-oxidation. Several clinical types of X-ALD, ranging from mild (axonopathy in the spinal cord) to severe (cerebral demyelination), are known. However, the molecular basis for this phenotypic variability remains largely unknown. In this study, we determined plasma ceramide (CER) profile using liquid chromatography-tandem mass spectrometry. We characterized the molecular species profile of CER in the plasma of patients with mild (adrenomyeloneuropathy;AMN) and severe (cerebral) X-ALD. Eleven X-ALD patients (five cerebral, five AMN, and one carrier) and 10 healthy volunteers participated in this study. Elevation of C26:0 CER was found to be a common feature regardless of the clinical types. The level of C26:1 CER was significantly higher in AMN but not in cerebral type, than that in healthy controls. The C26:1 CER level in the cerebral type was significantly lower than that in the AMN type. These results suggest that a high level of C26:0 CER, along with a control level of C26:1 CER, is a characteristic feature of the cerebral type X-ALD. J. Med. Invest. 70 : 403-410, August, 2023

著者

Shinichiro Yamada Yuji Morine Satoru Imura Tetsuya Ikemoto Yu Saito Mayuko Shimizu Koichi Tsuneyama Mitsue Nishiyama Shiori Ishizawa Mitsuo Shimada

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.70, no.1.2, pp.66-73, 2023 (Released:2023-05-11)

参考文献数

51

---

Background : Non-alcoholic steatohepatitis (NASH) is associated with a higher risk of hepatocellular carcinoma (HCC), and the importance of the gut?liver axis has been recognized in NASH-associated HCC. We investigated the effect of TU-100 on the intestinal microbiome and hepatocarcinogenesis in a NASH model. Methods : Seven-week-old Tsumura Suzuki obese diabetes mice, a model that shows the spontaneous onset of NASH and HCC, were used. They were divided into a TU-100 treated group and a control group. Mice were sacrificed at 24 and 48 weeks to evaluate hepatic steatosis, fibrosis, carcinogenesis, cytokine expression, and microbiome abundance. Results : At 24 weeks, the TU-100 group showed significantly lower expression of IL6, IL1B, and ACTA2 mRNA in the liver (P?<?0.05). At 48 weeks, the TU-100 group showed significantly lower levels of serum alanine aminotransferase. The TU-100 group also showed a lower rate of NASH than the control group (28% vs 72%?;?P?=?0.1). Tumor diameter was significantly smaller in the TU-100 group compared with that in the control group (P?<?0.05). Regarding the intestinal microbiome, the genera Blautia and Ruminococcus were increased in the TU-100 group (P?<?0.05), whereas Dorea and Erysipelotrichaceae were decreased in the TU-100 group (P?<?0.05). Conclusions : TU-100 regulates the intestinal microbiome and may suppress subsequent hepatocarcinogenesis in the NASH model. J. Med. Invest. 70 : 66-73, February, 2023

著者

Mariko Aoyama Shinichi Yamasaki Masaru Tsuyuguchi

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.62, no.3.4, pp.268-271, 2015 (Released:2015-09-18)

参考文献数

10

被引用文献数

4 4

---

This is a case of a woman who was diagnosed with resistance to thyroid hormone after total thyroidectomy for thyroid cancer. Preoperative laboratory examination revealed the syndrome of inappropriate secretion of TSH, however, the patient had no thyrotoxic symptoms and no family history. Based on the results of ultrasonography and fine needle aspiration, she was diagnosed with papillary thyroid carcinoma and underwent total thyroidectomy. After the surgery, she received L-T4 therapy, but her TSH levels remained elevated. MRI was performed on the brain, but no lesions were found in the pituitary gland. Therefore, she was tested for TRβ gene, and a previously defined mutation, P453S, was detected. Ultimately, she was diagnosed as RTH and treated with L-T4. In this case, the dose of L-T4 needed to be increased to suppress her TSH levels to the normal range or less, and to prevent stimulating malignant cells. Currently, her dose of L-T4 has been increased, and her TSH levels are still lower than normal, however, she has no thyrotoxic symptoms, recurrence or metastasis of thyroid cancer. The patient is currently under careful observation regarding her circulatory and physiological status. In addition, the results of treatment still need to be monitored and evaluated. J. Med. Invest. 62: 268-271, August, 2015

著者

Tamotsu Tanaka Kazuya Koyama Naoko Takahashi Katsuya Morito Hanif Ali Momoyo Azuma Kozo Kagawa Hiroshi Kawano Rumana Yesmin Has Mutsumi Aihara Yasuhiko Nishioka

出版者

The University of Tokushima Faculty of Medicine

雑誌

The Journal of Medical Investigation (ISSN:13431420)

巻号頁・発行日

vol.69, no.3.4, pp.196-203, 2022 (Released:2022-10-17)

参考文献数

26

被引用文献数

1

---

Idiopathic pulmonary fibrosis (IPF) is the most common idiopathic interstitial pneumonias. Lysophosphatidic acid (LPA) and sphingosine 1-phosphate (S1P) are signaling lipids that evoke growth factor-like responses to many cells. Recent studies revealed the involvement of LPA and S1P in the pathology of IPF. In this study, we determined LPA, S1P and ceramide 1-phosphate (C1P) in peripheral blood plasma of IPF patients, and examined correlation to the vital capacity of lung (VC), an indicator of development of fibrosis. Blood plasma samples were taken from eleven patients with IPF and seven healthy volunteers. The lipids of the sample were extracted and subjected to liquid chromatography-tandem mass spectrometry for analysis. Results showed that there is a significant negative correlation between VC and plasma LPA levels, indicating that IPF patients with advanced fibrosis had higher concentration of LPA in their plasma. Average of S1P levels were significantly higher in IPF patients than those in healthy subjects. Although it is not statistically significant, a similar correlation trend that observed in LPA levels also found between VC and S1P levels. These results indicated that plasma LPA and S1P may be associated with deterioration of pulmonary function of IPF patients. J. Med. Invest. 69 : 196-203, August, 2022