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1.
Fam Court Rev ; 62(1): 160-175, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38495867

ABSTRACT

Conflict between parents is stressful and disruptive to children living in the midst of parental separation or divorce. Although some level of post-separation/divorce conflict is understandable in an emotionally-charged separation/divorce, it undermines the extent to which parents protect their children from short- and long-term problems. In this article, we weave together a synthesized perspective informed by our respective training and experience in prevention science and family law on the role of parent education programs for high-conflict separating/divorcing parents. To do so, we first describe the research on the effects of high interparental conflict on children's outcomes and then discuss current approaches and challenges to reducing these negative effects by offering parent education programs for high-conflict separating/divorcing parents. Then, we propose and describe a new model for early, effective, and scalable parent education programs with the ultimate goal of protecting children after separation/divorce.

2.
Res Child Adolesc Psychopathol ; 51(12): 1933-1944, 2023 12.
Article in English | MEDLINE | ID: mdl-37875642

ABSTRACT

Despite the five million children in the U.S. with an incarcerated parent, there is limited research on risk and protective factors for this population. We analyzed data from the National Survey for Children's Health (2018) to: (1) examine associations among parental incarceration and other adverse childhood experiences (ACEs), (2) characterize the association between parental incarceration and youth mental health outcomes, (3) examine differences in positive childhood experiences (PCEs; collective socialization, community engagement, neighborhood amenities, and family problem solving) by parental incarceration status, (4) examine whether PCEs were protective against mental health problems and if there was an interaction with parental incarceration status, and (5) examine the interaction between PCEs, parental incarceration, and ACEs on mental health problems. Results revealed that children with incarcerated parents had higher odds of experiencing other ACEs, higher odds of having mental health problems, and experienced fewer PCEs compared to children without incarcerated parents. Further, although PCEs were associated with a lower odds of mental health problems for both children with and without incarcerated parents, they did not mitigate the negative impact of parental incarceration on mental health outcomes. While PCEs attenuated the association between ACEs and mental health, parental incarceration status did not significantly moderate the interaction. These results highlight vulnerabilities and potential protective factors for children with incarcerated parents and have important implications for the development of multilevel intervention strategies that seek to promote resilience and reduce risk for this population.


Subject(s)
Adverse Childhood Experiences , Child , Adolescent , Humans , Parents/psychology , Mental Health , Socialization , Correctional Facilities
3.
AJNR Am J Neuroradiol ; 42(6): 1046-1051, 2021 06.
Article in English | MEDLINE | ID: mdl-33664118

ABSTRACT

BACKGROUND AND PURPOSE: Patients with SAH due to a ruptured intracranial aneurysm occasionally show reversible high-signal lesions in the splenium of the corpus callosum on DWI. These lesions are called cytotoxic lesions of the corpus callosum. This study retrospectively reviewed cases of aneurysmal SAH and investigated clinical features of cytotoxic lesions of the corpus callosum associated with SAH. MATERIALS AND METHODS: Participants comprised 259 patients with aneurysmal SAH who had undergone curative treatment at our hospital. We examined the following items related to cytotoxic lesions of the corpus callosum: occurrence rate, timing of appearance and disappearance of the lesions, lesion size, aneurysm location, severity of SAH, treatment method, clinical course, and outcome. RESULTS: Among the 259 cases, DWI detected cytotoxic lesions of the corpus callosum in 33 patients (12.7%). The mean periods from the onset of SAH to detection and disappearance of cytotoxic lesions of the corpus callosum were 6.3 days (range, 0-25 days) and 35.7 days (range, 9-78 days), respectively. Cytotoxic lesions of the corpus callosum were classified into 2 types: a small type localized in the splenium in 26 cases (78.9%) and a large type spread along the ventricle in 7 cases (21.2%). The severity of SAH, coiling, hydrocephalus, and poor mRS score at discharge were significantly higher in the group with cytotoxic lesions of the corpus callosum. However, multivariate analysis did not identify cytotoxic lesions of the corpus callosum as a risk factor for poor outcome. CONCLUSIONS: Cytotoxic lesions of the corpus callosum appear at a frequency of 12.7% in patients with aneurysmal SAH. Cytotoxic lesions of the corpus callosum associated with SAH take several days to appear and subsequently resolve within about a month. Cytotoxic lesions of the corpus callosum were likely to occur in patients with high-grade SAH but did not represent a predictor of poor outcome.


Subject(s)
Subarachnoid Hemorrhage , Aged , Aneurysm, Ruptured , Corpus Callosum/diagnostic imaging , Female , Humans , Intracranial Aneurysm/complications , Intracranial Aneurysm/diagnostic imaging , Retrospective Studies , Subarachnoid Hemorrhage/diagnostic imaging , Treatment Outcome
5.
Reproduction ; 160(2): 205-215, 2020 08.
Article in English | MEDLINE | ID: mdl-32438343

ABSTRACT

The existence of cytoplasmic passages between germ cells and their potential function in the control of the spermatogenic process has long been an intriguing question. Evidence of the important role of such structures, known as intercellular bridges (ICB), in spermatogenesis has been implicated by the failure of spermatogenesis in testis-expressed gene 14 (Tex14) mutant mice, which lack the ICBs, to progress past the pachytene spermatocyte stage. Using these Tex14 mutants, the present study evaluated, for the first time, the behavior and synchrony of the spermatogonial lineage in the absence of ICBs. Our data suggest that the absence of these cytoplasmic connections between cells affects the expansion of the undifferentiated type A (Aundiff) spermatogonia compartment and their transition to A1, resulting in a significant numerical reduction of differentiating A1 spermatogonia, but did not interfere with cell amplification during subsequent mitotic steps of differentiating spermatogonia from A1 through intermediate (In). However, beginning at the type B spermatogonia, the synchrony of differentiation was impaired as some cells showed delayed differentiation compared to their behavior in a normal seminiferous epithelium cycle. Thus although spermatogonial development is able to proceed, in the absence of ICBs in Tex14-/- mutants, the yield of cells, specific steps of differentiation, the synchrony of the cell kinetics, and the subsequent progression in meiosis are quantitatively lower than normal.


Subject(s)
Cell Communication , Cell Differentiation , Meiosis , Seminiferous Epithelium/pathology , Spermatogenesis , Spermatogonia/pathology , Transcription Factors/physiology , Animals , Cell Proliferation , Cytoplasm , Male , Mice , Mice, Inbred C57BL , Mice, Knockout , Seminiferous Epithelium/metabolism , Spermatogonia/metabolism
6.
Cryo Letters ; 41(5): 291-296, 2020.
Article in English | MEDLINE | ID: mdl-33988667

ABSTRACT

BACKGROUND: Under atmospheric pressure, the identifiable phases of ice crystals are hexagonal (stable) and cubic (metastable). OBJECTIVE: This study aimed to test the hypothesis that water crystallizes into the cubic phase at the beginning and then changes to the hexagonal phase. MATERIALS AND METHODS: Aqueous solutions of 40% (w/w) and 50% (w/w) glucose, and 40% (w/w) ammonium hydrogen sulfate, as well as emulsified water, were investigated. RESULTS: The cubic-to-hexagonal ice phase transition was detected in 40% (w/w) glucose solution within a 1 s integration interval, whereas the cubic ice formed in 50% (w/w) glucose solution did not transition to the hexagonal phase. The cubic phase was also confirmed in the 40% (w/w) ammonium hydrogen sulfate solution, but not in emulsified water. CONCLUSION: The cubic-to-hexagonal ice phase transition was detected in three aqueous solutions tested upon freezing. It was not possible to clearly capture the transition process in emulsified water under the study condition.


Subject(s)
Cryopreservation , Freezing , Ice , Water , Crystallization
7.
Am J Emerg Med ; 38(6): 1097-1101, 2020 06.
Article in English | MEDLINE | ID: mdl-31451302

ABSTRACT

OBJECTIVES: Mild traumatic brain injury (mTBI) is defined as Glasgow Coma Score (GCS) of 14 or 15. Despite good outcomes, patients are commonly transferred to trauma centers for observation and/or neurosurgical consultation. The aim of this study is to assess the value of redefining mTBI with novel radiographic criteria to determine the appropriateness of interhospital transfer for neurosurgical evaluation. METHODS: A retrospective study of patients with blunt head injury with GCS 13-15 and CT head from Jan 2014-Dec 2016 was performed. A novel criteria of head CT findings was created at our institution to classify mTBI. Outcomes included neurosurgical intervention and transfer cost. RESULTS: A total of 2120 patients were identified with 1442 (68.0%) meeting CT criteria for mTBI and 678 (32.0%) classified high risk. Two (0.14%) patients with mTBI required neurosurgical intervention compared with 143 (21.28%) high risk TBI (p < 0.0001). Mean age (55.8 years), and anticoagulation (2.6% vs 2.8%) or antiplatelet use (2.1% vs 3.0%) was similar between groups (p > 0.05). Of patients with mTBI, 689 were transferred without receiving neurosurgical intervention. Given an average EMS transfer cost of $700 for ground and $5800 for air, we estimate an unnecessary transfer cost of $733,600. CONCLUSION: Defining mTBI with the described novel criteria clearly identifies patients who can be safely managed without transfer for neurosurgical consultation. These unnecessary transfers represent a substantial financial and resource burden to the trauma system and inconvenience to patients.


Subject(s)
Brain Injuries, Traumatic/diagnosis , Hospital Costs , Referral and Consultation/economics , Tomography, X-Ray Computed/methods , Trauma Centers , Triage/economics , Brain Injuries, Traumatic/economics , Cost-Benefit Analysis , Female , Humans , Male , Middle Aged , Retrospective Studies , Tomography, X-Ray Computed/economics , Triage/methods
8.
Arch Gerontol Geriatr ; 82: 128-132, 2019.
Article in English | MEDLINE | ID: mdl-30780049

ABSTRACT

BACKGROUND: Associations between masseter muscle thickness(MMT) and limb muscle thickness, and between grip strength and MMT, as well as tooth-loss, have been reported previously. The previous study also showed that masseter muscle mass could be a better marker of sarcopenia than psoas muscle mass. Although the association between MMT and muscle strength is also known, the quality of the masseter muscle were not assessed in detail previously. We examined the relationship of masseter muscle echo intensity (MMEI) with skeletal muscle, physical function, and nutrition status, in order to determine whether MMEI could be a good indicator of these parameters. METHODS: We assessed 139 community-dwelling elderly individuals (men: 65, women: 74). Age, body mass index (BMI), skeletal muscle mass index, grip strength, walking speed, calf circumference, tooth-loss (Eichner classification), occlusal force, MMT, and MMEI were obtained. In multiple regression analysis, MMEI were set as dependent variables. RESULTS: Multiple regression analysis revealed BMI (p < 0.05), grip strength (p < 0.01), walking speed (p < 0.01), and MMT (p < 0.01) as factors with significant association with MMEI. CONCLUSIONS: MMT is related to occlusal force and MMEI. MMEI was related strongly to grip strength and walking speed, but not to tooth-loss. However, MMEI, which is easily determined ultrasonographically, could be a good indicator of grip strength and walking speed, and thus may be predictive of dynapenia.


Subject(s)
Independent Living , Masseter Muscle/diagnostic imaging , Ultrasonography/methods , Aged , Aged, 80 and over , Female , Humans , Male , Masseter Muscle/anatomy & histology , Middle Aged , Muscle Strength/physiology , Sarcopenia/physiopathology , Walking/physiology
9.
J Oral Rehabil ; 45(3): 222-227, 2018 Mar.
Article in English | MEDLINE | ID: mdl-29205449

ABSTRACT

We conducted a clinical cross-sectional study to examine the relationship between jaw-opening force and the cross-sectional area of the suprahyoid muscles and whole skeletal muscle mass. Subjects were healthy 39 males and 51 females without dysphagia and sarcopenia, aged 65 years and older. Jaw-opening force was measured three times using a jaw-opening sthenometer; the maximum of these three was taken as the measurement value. The cross-sectional area of the geniohyoid and anterior belly of the digastric muscles were evaluated using ultrasonography. The skeletal muscle mass index, gait speed and grip strength were evaluated according to the diagnostic criteria of the Asian Working Group for Sarcopenia. For each sex, a multiple regression analysis determined the factors that affect jaw-opening force. Jaw-opening force was associated with the cross-sectional area of the geniohyoid muscle in males (regression coefficient [ß] = 0.441, 95% confidence interval [CI] = 14.28-56.09) and females (ß = 0.28, 95% CI = 3.10-54.57). Furthermore, in females only, jaw-opening force was associated with the skeletal muscle mass index (ß = 0.40, 95% CI = 3.67-17.81). In contrast, jaw-opening force was not associated with the cross-sectional area of the anterior belly of the digastric muscle in either sex. In healthy elderly males and females, jaw-opening force was positively associated with the cross-sectional area of the geniohyoid muscle. However, the jaw-opening force was positively associated with the skeletal muscle mass index only in females.


Subject(s)
Hyoid Bone/physiology , Isometric Contraction/physiology , Jaw/physiology , Muscle, Skeletal/physiology , Range of Motion, Articular/physiology , Aged , Aging/physiology , Analysis of Variance , Biomechanical Phenomena , Cross-Sectional Studies , Electromyography , Female , Hand Strength/physiology , Health Status Indicators , Humans , Jaw/anatomy & histology , Male , Muscle Strength/physiology , Sex Factors , Statistics, Nonparametric
10.
Arch Gerontol Geriatr ; 74: 106-111, 2018 Jan.
Article in English | MEDLINE | ID: mdl-29080497

ABSTRACT

OBJECTIVE: In the elderly and patients with dysphagia, masticatory problems often cause aspiration or choking. Although simple methods to predict aspiration and silent aspiration exist, methods for evaluating the masticatory function of patients with dysphagia are lacking. Accordingly, we developed a simple test to assess the chewing and swallowing ability of patients with dysphagia. METHODS: One hundred and five patients with dysphagia were included. We used the Saku-Saku Test (SST), in which patients were asked to eat a rice cracker, and evaluated the quality of mandibular rotation during mastication. We studied the participants' ability to grind, aggregate, and swallow using videoendoscopic evaluation (VE) and investigated its association with mandibular rotation. RESULTS: The SST showed good reliability between two examiners, with a kappa coefficient of 0.80. 92.4% of the patients ate the rice cracker without aspiration. The SST showed a high sensitivity of 73.3% and specificity of 93.3% for the degree of grinding. The degree of food bolus aggregation had a sensitivity of 45.0% and specificity of 90.6%, and aspiration had a sensitivity of 25.0% and specificity of 84.5%, both of which showed high specificity. CONCLUSIONS: The results of this study suggested that the SST might be simple and useful for identifying patients with dysphagia who are able to masticate, even if they do not eat foods that need chewing and could be used before starting these patients on foods that need chewing.


Subject(s)
Deglutition Disorders/physiopathology , Mastication , Aged , Aged, 80 and over , Cross-Sectional Studies , Deglutition/physiology , Female , Humans , Male , Mastication/physiology , Reproducibility of Results
11.
Dis Esophagus ; 30(11): 1-8, 2017 Nov 01.
Article in English | MEDLINE | ID: mdl-28881897

ABSTRACT

A new classification of magnifying endoscopy with narrow band imaging (ME-NBI) for diagnosing and staging superficial esophageal squamous cell carcinoma (SESCC) was proposed by the Japan Esophageal Society in 2011. This study aimed to compare the new classification with the conventional classifications (Inoue's classification and Arima's classification). This was a prospective analysis of data from a single cancer center involving 151 consecutive patients with 156 SESCCs that were endoscopically or surgically resected. Initially, only ME-NBI images were selected and reviewed independently by three experienced endoscopists. White light imaging (WLI) was then evaluated separately after an interval. The diagnostic performance of each classification and interobserver agreement were assessed, and the WLI findings that affect the diagnosis by the new classification were identified. The specificity for classifying invasive depth as epithelium (EP)/lamina propria mucosae (LPM) confined was higher with the new classification than with Inoue's classification (0.512 vs. 0.349; P = 0.02) and Arima's classification (0.512 vs. 0.279; P < 0.01). However, the sensitivity was lower (0.902 vs. 1.000; P < 0.01) compared with Arima's classification. The concordance rates of three evaluators (κ values) were 0.52 for the new classification, 0.50 for Inoue's classification, and 0.23 for Arima's classification. On multivariate analysis, thickness on WLI independently affected the accuracy of diagnosis with the new classification (OR 3.23; 95%CI, 1.30-8.03). The new classification is superior to conventional classifications with respect to specificity for diagnosing SESCC with depth EP/LPM. Thickness on WLI was a factor negatively affecting the diagnostic performance of the new classification.


Subject(s)
Carcinoma, Squamous Cell/diagnostic imaging , Esophageal Neoplasms/diagnostic imaging , Esophagoscopy/methods , Image Enhancement/methods , Narrow Band Imaging/classification , Adult , Aged , Aged, 80 and over , Carcinoma, Squamous Cell/classification , Carcinoma, Squamous Cell/pathology , Esophageal Mucosa/diagnostic imaging , Esophageal Mucosa/pathology , Esophageal Neoplasms/classification , Esophageal Neoplasms/pathology , Esophageal Squamous Cell Carcinoma , Esophagus/diagnostic imaging , Esophagus/pathology , Female , Humans , Male , Middle Aged , Narrow Band Imaging/methods , Neoplasm Invasiveness , Observer Variation , Prospective Studies , Sensitivity and Specificity
12.
Int J Obes (Lond) ; 41(8): 1237-1245, 2017 08.
Article in English | MEDLINE | ID: mdl-28465604

ABSTRACT

BACKGROUND: The association between the development of obesity and its metabolic comorbidities, and chronic consumption of high-fat diet (HFD) has been well-demonstrated. Interestingly, emerging evidence indicates that obesity is also associated with an increased risk for psychiatric disorders including anxiety and depression. Although HFD feeding is associated with anxiety-related behaviors, previous studies have reported inconsistent findings on the direction of this relationship. Therefore, in this study we sought to investigate the link between HFD feeding, body weight, energy states and anxiety levels in mice and specifically to determine if the duration of HFD exposure has distinct effects on anxiety-related behaviors. METHODS: To disentangle the temporal dynamic effects of HFD feeding on anxiety-related behaviors, mice were fed a HFD or regular chow (RC) diet and were assayed periodically for anxiety-related behaviors by using behavioral tests (open field test; OFT) and the elevated plus maze. To determine if obesity phenotypes correlate with anxiety-related behaviors, changes in anxiety-related behaviors in OFTs were correlated with changes in both body weight and glucose sensitivity following various levels of HFD and RC exposure. RESULTS: Our results demonstrate a time-dependent biphasic effect of HFD feeding on anxiety-related behaviors. At 5 weeks, mice fed HFD show a reduction in anxiety-related behaviors when compared to pair-fed RC mice. At 8 weeks of HFD or RC feeding, anxiety levels were the same in both groups. Following 15 weeks of HFD and RC feeding, however, mice displaying metabolic symptoms of obesity showed increased anxiety-related behaviors relative to mice resilient to obesity phenotypes, independent of feeding conditions. CONCLUSIONS: Taken together our findings suggest that HFD bi-directionally effects anxiety-related behaviors such that short-term exposure to a HFD reduces anxiety levels, while longer exposure to a HFD promotes anxiety levels selectively in mice that display metabolic symptoms of obesity. Regardless of diet (HFD or RC), heavier animals display increased anxiety-like behaviors. These findings indicate diverse overlapping roles for HFD and body weight in modulating anxiety-related behaviors, and may partly resolve previous inconsistencies in studies examining the relationship between HFD feeding and anxiety.


Subject(s)
Anxiety/physiopathology , Diet, High-Fat/adverse effects , Energy Metabolism/physiology , Feeding Behavior/physiology , Obesity/physiopathology , Animals , Disease Models, Animal , Maze Learning , Mice , Mice, Inbred C57BL , Obesity/metabolism , Time Factors
13.
Clin Exp Allergy ; 47(6): 795-804, 2017 Jun.
Article in English | MEDLINE | ID: mdl-28109183

ABSTRACT

BACKGROUND: TMEM16A, a Ca-activated Cl channel, regulates various physiological functions such as mucin secretion. However, the role of TMEM16A in hyper-secretion in asthma is not fully understood. OBJECTIVE: The aim of this study is to evaluate Cl ion transport via TMEM16A and determine the localization of TMEM16A in a guinea-pig asthma model. METHODS: Guinea-pigs were sensitized with ovalbumin (OVA) i.p. on Days 1 and 8. On Day 22, we assessed OVA challenge-induced Cl ion transport in the sensitized tracheas ex vivo in an Ussing chamber, compared with the non-sensitized tracheas. We then examined the effect of T16Ainh-A01, a TMEM16A inhibitor, on the increase in Cl ion transport. The tracheal epithelium was immunostained with an anti-TMEM16A antibody. Epithelial cells from guinea-pig tracheas were cultured at the air-liquid interface in the presence of IL-13 for in vitro study. We studied the effect of TMEM16A inhibitors on Ca-dependent agonist, uridine triphosphate (UTP)-induced increases in Cl ion transport in the cultured cells. The cells were immunostained with an anti-TMEM16A antibody, an anti-MUC5AC antibody and an anti-α-tubulin antibody. RESULTS: OVA challenge induced an increase in short circuit current within 1 min in the OVA-sensitized tracheas but not in the non-sensitized tracheas, which was inhibited by pretreatment of T16Ainh-A01. Sensitized tracheas showed goblet cell metaplasia with more positive TMEM16A immunostaining, particularly in the apical portion compared with the non-sensitized tracheas. The in vitro UTP-induced increase in Cl ion transport was strongly inhibited by pretreatment with T16Ainh-A01, benzbromarone, and niflumic acid. TMEM16A was positively immunostained at the apical portion and in the MUC5AC-positive area in IL-13-induced goblet cell metaplasia. CONCLUSIONS: Antigen challenge and Ca-dependent agonist treatment increased Cl ion transport via the overexpression of TMEM16A in goblet cell metaplasia in a guinea-pig asthma model. TMEM16A inhibitors may be useful for the treatment of hyper-secretion in asthma.


Subject(s)
Anoctamin-1/immunology , Asthma/metabolism , Ion Transport/immunology , Animals , Asthma/immunology , Cells, Cultured , Goblet Cells/immunology , Goblet Cells/metabolism , Guinea Pigs , Male
14.
J Hand Surg Eur Vol ; 41(8): 822-8, 2016 Oct.
Article in English | MEDLINE | ID: mdl-27178574

ABSTRACT

UNLABELLED: We report the results of complete release of the entire A2 pulley after zone 2C flexor tendon repair followed by early postoperative active mobilization in seven fingers and their comparisons with 33 fingers with partial A2 pulley release. In seven fingers, release of the entire A2 pulley was necessary to allow free gliding of the repairs in five fingers and complete release of both the A2 and C1 pulleys was necessary in two. No bowstringing was clinically evident in any finger. Two fingers required tenolysis. Using Tang's criteria, the function of two digits was ranked as excellent, four good and one fair; there was no failure. The functional return in these seven fingers was similar with that in 33 fingers with partial A2 pulley release; in these patients only one finger required tenolysis. Our results support the suggestion that release of the entire A2 pulley together with the adjacent C1 pulley does not clinically affect finger motion or cause tendon bowstringing, provided that the other pulleys are left intact. LEVEL OF EVIDENCE: IV.


Subject(s)
Finger Injuries/surgery , Suture Techniques , Tendon Injuries/surgery , Tenotomy , Adolescent , Adult , Cohort Studies , Female , Finger Joint , Humans , Male , Middle Aged , Range of Motion, Articular , Recovery of Function , Treatment Outcome , Young Adult
15.
J Hand Surg Eur Vol ; 41(4): 400-5, 2016 May.
Article in English | MEDLINE | ID: mdl-26676484

ABSTRACT

We report the outcomes of repair of the flexor digitorum profundus tendon in zone 2a in 22 fingers. The tendon was repaired with a six-strand repair method and the A4 pulley was completely released. Release of the C2 pulley combined with the A4 pulley was necessary in 12 fingers, nine fingers underwent a complete release of the A3, C2, and A4 pulleys, and one finger underwent a release of the C1, A3, C2, and A4 pulleys. The mean total active motion of the three finger joints was 234° at 5 to 12 months of follow-up. No bowstringing was noted in these fingers. The good and excellent recovery of active digital motion was in 20 (91%) out of 22 fingers according to Strickland's criteria or Tang's criteria. Our results suggest that release of the A3, C2, and A4 pulleys makes the repair surgery easier and does not cause tendon bowstringing.


Subject(s)
Finger Injuries/rehabilitation , Finger Injuries/surgery , Postoperative Care , Tendon Injuries/rehabilitation , Tendon Injuries/surgery , Adult , Follow-Up Studies , Humans , Middle Aged , Range of Motion, Articular/physiology , Recovery of Function/physiology , Retrospective Studies , Suture Techniques , Young Adult
16.
Dis Esophagus ; 29(7): 843-847, 2016 Oct.
Article in English | MEDLINE | ID: mdl-25809505

ABSTRACT

This study investigated whether an intestinal epithelial culture method can be applied to mouse and human esophageal cultures. The esophagi harvested from 1-day-old mice and adult humans were maintained in collagen gels. A commercially available culture medium for human embryonic stem cells was used for the human esophageal culture. We discovered that the intestinal epithelial culture method can be successfully applied to both mouse and human esophageal cultures. The long-term cultured esophageal organoids were rod-like luminal structures lined with myofibroblasts. We discovered that regeneration of the esophageal mucosal surface can be almost completely achieved in vitro, and the advantage of this method is that organoid cultures may be generated using host-derived fibroblasts as a niche. This method is a promising tool for mouse and human research in intestinal biology, carcinogenesis, and regenerative medicine.


Subject(s)
Esophagus/pathology , Tissue Culture Techniques/methods , Adult , Animals , Collagen , Epithelial Cells/metabolism , Esophageal Mucosa/physiology , Humans , Intestinal Mucosa/metabolism , Mice , Organoids/metabolism , Regeneration
18.
Endocrine ; 50(3): 659-64, 2015 Dec.
Article in English | MEDLINE | ID: mdl-26209038

ABSTRACT

We investigated the effects of sitagliptin, a dipeptidyl peptidase (DPP)-4 inhibitor, on the number of circulating CD34(+)CXCR4(+)cells, a candidate for endothelial progenitor cells (EPCs), plasma levels of stromal cell-derived factor (SDF)-1α, a ligand for CXCR4 receptor and a substrate for DPP-4, and plasma levels of interferon-inducible protein (IP)-10, for a substrate for DPP-4, in patients with type 2 diabetes. We studied 30 consecutive patients with type 2 diabetes who had poor glycemic control despite treatment with metformin and/or sulfonylurea. Thirty diabetic patients were randomized in a 2:1 ratio into a sitagliptin (50 mg/day) treatment group or an active placebo group (glimepiride 1 mg/day) for 12 weeks. Both groups showed similar improvements in glycemic control. The number of circulating CD34(+)CXCR4(+) cells was increased from 30.5 (20.0, 47.0)/10(6) cells at baseline to 55.5 (31.5, 80.5)/10(6) cells at 12 weeks of treatment with 50 mg/day sitagliptin (P = 0.0014), while showing no significant changes in patients treated with glimepiride. Plasma levels of SDF-1α and IP-10, both physiological substrates of endogenous DPP-4 and chemokines, were significantly decreased at 12 weeks of sitagliptin treatment. In conclusion, treatment with sitagliptin increased the number of circulating CD34(+)CXCR4(+) cells by approximately 2-fold in patients with type 2 diabetes.


Subject(s)
Diabetes Mellitus, Type 2/drug therapy , Dipeptidyl-Peptidase IV Inhibitors/therapeutic use , Endothelial Progenitor Cells , Sitagliptin Phosphate/therapeutic use , Aged , Antigens, CD34/analysis , Diabetes Mellitus, Type 2/blood , Dipeptidyl-Peptidase IV Inhibitors/pharmacology , Female , Humans , Male , Middle Aged , Receptors, CXCR4/analysis , Sitagliptin Phosphate/pharmacology
19.
Drug Res (Stuttg) ; 65(11): 614-6, 2015 Nov.
Article in English | MEDLINE | ID: mdl-25463596

ABSTRACT

The antitumor effects of a supramolecular substance, the [2] rotaxane (TRO-A0001), and its molecular mechanisms were investigated. TRO-A0001 suppressed the proliferation of cultured human Molt-3 acute lymphoblastic leukemia cells for 12-72 h in a dose-dependent manner. Based on flow cytometry, TRO-A0001 clearly induced apoptosis after 24 h. The mitochondrial membrane potential disappeared after treatment with 1.0 µM of TRO-A0001. Expression of the cleaved forms of capase-9 and caspase-3 was significantly increased in cells exposed to TRO-A0001, whereas the expression of XIAP, a type of inhibitor of apoptosis family, was decreased. These results suggest that [2] rotaxane TRO-A0001 may be a highly promising new antitumor medicine.


Subject(s)
Antineoplastic Agents/pharmacology , Apoptosis/drug effects , Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy , Rotaxanes/pharmacology , Antineoplastic Agents/administration & dosage , Caspase 3/genetics , Caspase 9/genetics , Cell Line, Tumor , Cell Proliferation/drug effects , Dose-Response Relationship, Drug , Flow Cytometry , Humans , Membrane Potential, Mitochondrial/drug effects , Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology , Rotaxanes/administration & dosage , Time Factors , X-Linked Inhibitor of Apoptosis Protein/genetics
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