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1.
Mol Vis ; 30: 17-35, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38586604

RESUMEN

Purpose: Diabetic macular edema (DME) is a sight-threatening complication of diabetes. Consequently, studying the proteome of DME may provide novel insights into underlying molecular mechanisms. Methods: In this study, aqueous humor samples from eyes with treatment-naïve clinically significant DME (n = 13) and age-matched controls (n = 11) were compared with label-free liquid chromatography-tandem mass spectrometry. Additional aqueous humor samples from eyes with treatment-naïve DME (n = 15) and controls (n = 8) were obtained for validation by enzyme-linked immunosorbent assay (ELISA). Best-corrected visual acuity (BCVA) was evaluated, and the severity of DME was measured as central subfield thickness (CST) employing optical coherence tomography. Control samples were obtained before cataract surgery. Significantly changed proteins were identified using a permutation-based calculation, with a false discovery rate of 0.05. A human donor eye with DME and a control eye were used for immunofluorescence. Results: A total of 101 proteins were differentially expressed in the DME. Regulated proteins were involved in complement activation, glycolysis, extracellular matrix interaction, and cholesterol metabolism. The highest-fold change was observed for the fibrinogen alpha chain (fold change = 17.8). Complement components C2, C5, and C8, fibronectin, and hepatocyte growth factor-like protein were increased in DME and correlated with best-corrected visual acuity (BCVA). Ceruloplasmin and complement component C8 correlated with central subfield thickness (CST). Hemopexin, plasma kallikrein, monocyte differentiation antigen CD14 (CD14), and lipopolysaccharide-binding protein (LBP) were upregulated in the DME. LBP was correlated with vascular endothelial growth factor. The increased level of LBP in DME was confirmed using ELISA. The proteins involved in desmosomal integrity, including desmocollin-1 and desmoglein-1, were downregulated in DME and correlated negatively with CST. Immunofluorescence confirmed the extravasation of fibrinogen at the retinal level in the DME. Conclusion: Elevated levels of pro-inflammatory proteins, including the complement components LBP and CD14, were observed in DME. DME was associated with the loss of basal membrane proteins, compromised desmosomal integrity, and perturbation of glycolysis.


Asunto(s)
Diabetes Mellitus , Retinopatía Diabética , Edema Macular , Humanos , Edema Macular/tratamiento farmacológico , Retinopatía Diabética/complicaciones , Proteoma/metabolismo , Factor A de Crecimiento Endotelial Vascular/metabolismo , Humor Acuoso/metabolismo , Tomografía de Coherencia Óptica , Fibrinógeno/metabolismo , Inyecciones Intravítreas , Inhibidores de la Angiogénesis/uso terapéutico , Diabetes Mellitus/metabolismo
2.
Eye Contact Lens ; 49(2): 83-87, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36239602

RESUMEN

PURPOSE: The purpose of this study was to elucidate the risk factors for the progression of myopic maculopathy (MM) based on severity. METHODS: In this study, we conducted a systematic review and meta-analysis of the literature published before December 2020 on the risk factors for the progression of MM in patients with pathologic myopia (PM) and high myopia (HM). Odds ratios (ORs) for different stages of myopic maculopathy categorized based on the International Meta-Analysis for PM (META-PM) classification were calculated using fixed and random effects models. RESULTS: A total of 12,070 affected eyes derived from 5 cohort studies were included in the systematic review. The presence of PM at baseline was found to be significantly associated with an increased risk of MM progression (pooled ORs: 7.17, 95% confidence interval [CI]: 3.29-15.6), and the greater category of MM at baseline was found to be significantly associated with an increased risk of MM progression, that is, eyes with MM category 3 or more compared with eyes with MM category 2 (pooled OR: 10.95, 95% CI: 6.07-19.76) and eyes with MM category 4 compared with eyes with MM category 3 (pooled ORs: 2.45, 95% CI: 0.28-21.37). CONCLUSIONS: The findings in this systematic review and meta-analysis indicate that the progression of MM is associated with more severe MM at baseline.


Asunto(s)
Degeneración Macular , Miopía Degenerativa , Enfermedades de la Retina , Humanos , Miopía Degenerativa/complicaciones , Miopía Degenerativa/diagnóstico , Agudeza Visual , Enfermedades de la Retina/complicaciones , Ojo
3.
BMC Gastroenterol ; 21(1): 16, 2021 Jan 06.
Artículo en Inglés | MEDLINE | ID: mdl-33407172

RESUMEN

BACKGROUND: Impairment of activities of daily living (ADL) due to hemorrhagic gastroduodenal ulcers (HGU) has rarely been evaluated. We analyzed the risk factors of poor prognosis, including mortality and impairment of ADL, in patients with HGU. METHODS: In total, 582 patients diagnosed with HGU were retrospectively analyzed. Admission to a care facility or the need for home adaptations during hospitalization were defined as ADL decline. The clinical factors were evaluated: endoscopic features, need for interventional endoscopic procedures, comorbidities, symptoms, and medications. The risk factors of outcomes were examined with multivariate analysis. RESULTS: Advanced age (> 75 years) was a significant predictor of poor prognosis, including impairment of ADL. Additional significant risk factors were renal disease (odds ratio [OR] 3.43; 95% confidence interval [CI] 1.44-8.14) for overall mortality, proton pump inhibitor (PPIs) usage prior to hemorrhage (OR 5.80; 95% CI 2.08-16.2), and heart disease (OR 3.05; 95% CI 1.11-8.43) for the impairment of ADL. Analysis of elderly (> 75 years) subjects alone also revealed that use of PPIs prior to hemorrhage was a significant predictor for the impairment of ADL (OR 8.24; 95% CI 2.36-28.7). CONCLUSION: In addition to advanced age, the presence of comorbidities was a risk of poor outcomes in patients with HGU. PPI use prior to hemorrhage was a significant risk factor for the impairment of ADL, both in overall HGU patients and in elderly patients alone. These findings suggest that the current strategy for PPI use needs reconsideration.


Asunto(s)
Actividades Cotidianas , Úlcera Péptica , Anciano , Hemorragia , Humanos , Úlcera Péptica/complicaciones , Úlcera Péptica/epidemiología , Pronóstico , Estudios Retrospectivos , Factores de Riesgo
4.
Digestion ; 101(1): 53-59, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31722356

RESUMEN

INTRODUCTION: Ustekinumab (UST) is an antibody to the p40 subunit of interleukins 12 and 23 in Crohn's disease (CD) patients. Few reports are available on CD in the Asian scenario. OBJECTIVE: We evaluated UST's efficacy in inducing remission and its maintenance in Japanese CD patients. METHODS: This retrospective study was conducted in UST-treated CD patients at our center. The primary endpoint was the clinical remission rate at week 8; the major secondary endpoints were the clinical remission rate at week 24 or 48, change in CD activity index (CDAI) and biomarkers, endoscopic efficacy, and cumulative remission maintenance rate. RESULTS: The clinical remission rates at weeks 8, 24, and 48 were 44.4, 66.7, and 50.0%, respectively. Delayed response was shown by 22.2% of the patients; they achieved remission by week 24. The baseline CDAI was significantly lower in the remission group than in the nonremission group at week 8 (95% CI 0.89-0.99; p = 0.03). The cumulative remission maintenance rates at 6 and 12 months were 82.4 and 49.8%, respectively. Loss of response (LOR) was noted in 22.2% of the patients within 1 year. The endoscopic response and mucosal healing rate were 52.6 and 5.3%, respectively. Rapid improvements in serum albumin levels were observed at weeks 8 (p = 0.06), 24 (p < 0.01), and 48 (p = 0.01) from the baseline in active cases at baseline. CONCLUSIONS: UST is effective for remission induction and maintenance, especially in those with lower CD activity, however, may result in delayed response or LOR.


Asunto(s)
Antiinflamatorios/uso terapéutico , Anticuerpos Monoclonales/uso terapéutico , Enfermedad de Crohn/terapia , Ustekinumab/uso terapéutico , Adulto , Pueblo Asiatico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Inducción de Remisión , Estudios Retrospectivos , Resultado del Tratamiento
5.
BMC Ophthalmol ; 20(1): 95, 2020 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-32156267

RESUMEN

BACKGROUND: This study aimed to investigate the pre- and post-surgery reading ability in patients with idiopathic epiretinal membrane (ERM) to evaluate whether measurement of reading performance is a helpful test in addition to visual acuity (VA) as an assessment measure. METHODS: This prospective observational study involved 42 eyes of 40 patients with idiopathic ERM. Best-corrected visual acuity (BCVA), reading ability, and metamorphopsia score were evaluated at baseline and at 3, 6, and 12 months post-surgery. As the outcome measure, the reading ability of each patient (i.e., overall performance) was examined with MNREAD-J, the Japanese version of the MNREAD reading acuity (RA) charts, to determine RA, critical print size (CPS), and maximum reading speed (MRS). Generally, a difference of 0.2 logMAR or more is considered a significant change in BCVA. Thus, as a subgroup analysis, we additionally evaluated the BCVA and reading ability of the patients with a BCVA difference of 0.1 logMAR or less between at baseline and at 12 months post-surgery. RESULTS: Relative to their values at baseline, the subjects exhibited significantly improved BCVA, RA, and CPS throughout the post-surgery examination period (P < 0.001) and significantly improved MRS at 12 months post-surgery (P = 0.04). No significant change in the vertical metamorphopsia score was observed throughout the post-surgery follow-up period. However, and compared to the value at baseline, significant improvements in the horizontal metamorphopsia score were observed at 3, 6 (P < 0.05), and 12 months (P < 0.001) post-surgery. In the subgroup analysis of the 23 eyes that exhibited a BCVA improvement of 0.1 logMAR or less, the median BCVA did not change, but the median RA and CPS improved by 0.2 logMAR. CONCLUSIONS: Our findings showed that the surgical removal of ERM improves reading ability, even when the BCVA score does not improve. The measurement of reading performance appears to be a helpful test in addition to VA as a measure for assessing the surgical removal of ERM.


Asunto(s)
Membrana Epirretinal/fisiopatología , Lectura , Agudeza Visual , Vitrectomía/métodos , Anciano , Membrana Epirretinal/diagnóstico , Membrana Epirretinal/cirugía , Femenino , Estudios de Seguimiento , Humanos , Masculino , Periodo Posoperatorio , Periodo Preoperatorio , Pronóstico , Estudios Prospectivos , Tomografía de Coherencia Óptica/métodos
6.
J Am Anim Hosp Assoc ; 56(6): 301, 2020 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-33113555

RESUMEN

Several factors are suggested to be involved in the development of nontraumatic inguinal hernias (NTIHs) in dogs, but case series studies focusing on the etiology and treatment outcomes are limited. The aim of this study was to retrospectively evaluate the clinical characteristics and treatment outcomes of NTIHs in dogs. Medical records of 42 dogs with surgically treated NTIHs were reviewed. Forty-one dogs were included in the study, all dogs were small breeds weighing <10 kg, and middle to older age (>5 yr old; 33 cases), female sex (34 cases), and miniature dachshunds (26 cases) predominated. Left-sided occurrence was common (30 left, 9 right, 2 bilateral), and organ protrusion was seen in 22 cases (15 uteri, 9 small intestines, 1 colon). Fourteen of 15 uterine herniations (93%) were located left side. Ovariohysterectomy was performed with herniorrhaphy in 27/30 intact bitches, two of whom also underwent resection and anastomosis of a devitalized portion of the small intestine. Recurrence was seen in only one male dog. These results suggest that NTIHs are more likely to occur in small-breed female dogs, and that age may increase the risk of left-sided uterine protrusion; however, the long-term results after herniorrhaphy with ovariohysterectomy are excellent.


Asunto(s)
Enfermedades de los Perros/cirugía , Hernia Inguinal/veterinaria , Herniorrafia/veterinaria , Animales , Perros , Femenino , Hernia Inguinal/cirugía , Herniorrafia/métodos , Masculino , Estudios Retrospectivos , Resultado del Tratamiento
7.
Exp Eye Res ; 188: 107789, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31491425

RESUMEN

Although there have been no previous reports on the pH of the human vitreous body, it has been highly theorized that it changes in patients with diabetes mellitus (DM). In humans, it is necessary to measure the vitreous pH in vitro, which is an important point that presents a major problem, as vitreous pH immediately changes when exposed to air. The purpose of this present study was to report our recent development of an in vitro method for measuring vitreous pH via the combination of 27-gauge (G) vitreous surgery and a blood gas analyzer, as well as our investigative findings on whether or not there is a difference of pH depending on the presence of diabetes mellitus (DM). This cross-sectional study involved 30 subjects [18 subjects without DM (DM-) and 12 subjects with DM (DM+)] with no previous history of ophthalmologic surgery. The DM+ group included 6 cases of proliferative diabetic retinopathy (PDR) and 6 cases of non-PDR (NPDR). The DM- Group was comprised of patients with a macular hole or idiopathic epiretinal membrane. The DM+ Group included patients not only with macular hole or idiopathic epiretinal membrane but also diabetic macular edema, however, patients with obvious vitreous hemorrhage were excluded. In all patients, a vitreous specimen was anaerobically obtained at the start of 27G pars plana vitrectomy, with a venous blood sample being collected immediately prior to surgery. Between the DM- and DM+ subjects, pH, partial pressure of carbon dioxide (pCO2), partial pressure of oxygen (pO2), K+, Na+, Ca2+, Cl-, lactate, and glucose were compared. In the items in which a significant difference was found between DM- and DM+, the values between the PDR and NPDR cases were also compared. Our findings showed no significant difference in vitreous and venous-blood pH between the DM- and DM+ subjects. The vitreous biochemical data revealed that Ca2+ significantly reduced and lactate and glucose significantly increased in DM+ compared to DM-. Thus, we compared Ca2+, lactate, and glucose between the PDR and NPDR cases. Although glucose did not significantly change, Ca2+ significantly decreased and lactate significantly increased in the PDR cases. The venous biochemical data revealed that only glucose significantly increased in DM+. The data in all investigated items was found to be significantly different between the vitreous and venous samples. Our findings revealed that lactate increases and Ca2+ decreases in the vitreous body of DM patients, especially those with PDR, probably due to the increased production of lactic acid. However, although the production of lactic acid increased, the pH remained at a nearly constant value, thus suggesting that the human vitreous body has a high buffering capacity.


Asunto(s)
Diabetes Mellitus Tipo 2/metabolismo , Retinopatía Diabética/metabolismo , Concentración de Iones de Hidrógeno , Ácido Láctico/metabolismo , Cuerpo Vítreo/metabolismo , Anciano , Análisis de los Gases de la Sangre , Calcio/metabolismo , Dióxido de Carbono/metabolismo , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Oxígeno/metabolismo , Presión Parcial
10.
Int J Mol Sci ; 19(11)2018 Oct 25.
Artículo en Inglés | MEDLINE | ID: mdl-30366444

RESUMEN

Retinal vein occlusion (RVO) is a common retinal vascular disease. RVO may be complicated by pronounced ischemia that often leads to severe loss of visual function. The present work aimed at studying the retinal proteome of RVO complicated by ischemia. In six Danish Landrace pigs RVO was induced with argon laser in the right eye of each animal. As four retinal veins were occluded, the RVO best corresponded to a central retinal vein occlusion (CRVO). Left control eyes received a similar laser treatment without inducing occlusion. RVO and retinal ischemia were verified by angiography. The retinas were collected 15 days after RVO for proteomic analysis. RVO resulted in a downregulation of proteins involved in visual perception, including rhodopsin, transducin alpha chain, and peripherin-2. RVO also caused a downregulation of proteins involved in neurotransmitter transport, including glutamate decarboxylase 1 (GAD1), glutamate decarboxylase 2 (GAD2), and complexins 2⁻4. RVO lead to increased contents of proteins involved in inflammation, including interleukin-18 (IL-18), S100A12, and annexin A1 (ANXA1). Immunohistochemistry revealed a general retinal upregulation of IL-18 and ANXA1 while S100A12 was highly abundant in retinal ganglion cells in RVO. IL-18 and S100A12 are likely to be driving forces in the inflammatory response of RVO complicated by ischemia. Our findings also suggest that RVO results in compromised neurotransmission and a downregulation of proteins involved in visual perception.


Asunto(s)
Interleucina-18/metabolismo , Oclusión de la Vena Retiniana/metabolismo , Proteína S100A12/metabolismo , Animales , Anexina A1/metabolismo , Western Blotting , Glutamato Descarboxilasa/metabolismo , Espectrometría de Masas , Porcinos
11.
Graefes Arch Clin Exp Ophthalmol ; 255(1): 17-23, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-27853956

RESUMEN

PURPOSE: To evaluate functional and anatomic outcomes of eyes undergoing suprachoroidal buckling (SCB) using a specially designed catheter for the management of rhegmatogenous retinal detachment (RRD) secondary to peripheral retinal breaks. METHODS: Retrospective cohort study of 62 eyes of 62 patients. Subjects underwent SCB for the management of RRD secondary to single or multiple retinal breaks. Suprachoroidal indentation was achieved through the introduction of viscoelastic material in the suprachoroidal space overlying the break using an illuminated, 450 µm-wide, flex-tip catheter. This allowed for the creation of a suprachoroidal dome and chorio-retinal apposition. Forty-seven eyes (80 %) underwent SCB alone, while 15 eyes (20 %) were combined with 25-G pars-plana vitrectomy. Cryopexy and laserpexy were used in 38 (61 %) and 24 of eyes (39 %) respectively. RESULTS: Mean pre-operative best-corrected visual acuity (BCVA) improved from logMAR 0.82 (20/132) to 0.22 (20/33) (p < 0.0001). The single surgery reattachment rate was 92 % (57/62.) Final retinal reattachment was achieved in all eyes (100 %). No significant difference was observed in single-surgery anatomic success rates when stratified by lens status, macular involvement, or break location. There were no major intra- or post-operative complications. CONCLUSION: Suprachoroidal buckling using a special-design, flexible catheter is a safe and effective procedure for the management of RRD secondary to peripheral retinal breaks.


Asunto(s)
Catéteres , Desprendimiento de Retina/cirugía , Perforaciones de la Retina/cirugía , Curvatura de la Esclerótica/instrumentación , Agudeza Visual , Adulto , Anciano , Coroides/patología , Coroides/cirugía , Diseño de Equipo , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Oftalmoscopía , Retina/patología , Retina/cirugía , Desprendimiento de Retina/diagnóstico , Desprendimiento de Retina/etiología , Perforaciones de la Retina/complicaciones , Perforaciones de la Retina/diagnóstico , Estudios Retrospectivos , Resultado del Tratamiento , Ultrasonografía , Adulto Joven
12.
Dig Dis Sci ; 61(3): 835-40, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26518414

RESUMEN

BACKGROUND: Although all types of endoscopic procedures harbor risk of aspiration, little is understood about risk factors for aspiration pneumonia developing after endoscopic hemostasis. AIMS: The present study aimed to identify risk factors for aspiration pneumonia after endoscopic hemostasis. METHODS: Charts from consecutive patients with upper gastrointestinal bleeding that had been treated by endoscopic hemostasis at a single center between January 2004 and January 2015 were retrospectively reviewed. Patient information and clinical characteristics including cause of hemorrhage, established prognostic scales, laboratory data, comorbidities, medications, duration of endoscopic hemostasis, vital signs, sedative use, and the main operator during the procedure were compared between patients who developed aspiration pneumonia and those who did not. RESULTS: Aspiration pneumonia developed in 24 (4.8%) of 504 patients after endoscopic hemostasis. Endotracheal intubation was required for three of them, and one died of the complication. Multivariate analysis revealed that age >75 years (odds ratio (OR) 4.4; 95% confidence interval (CI) 1.5-13.6; p = 0.0073), procedural duration >30 min (OR 5.6; 95% CI 1.9-18.2; p = 0.0023), hemodialysis (OR 3.6; 95% CI 1.2-11; p = 0.024), and a history of stroke (OR 3.8; 95% CI 1-14; p = 0.041) were independent risk factors for developing aspiration pneumonia. CONCLUSIONS: Specific risk factors for aspiration pneumonia after endoscopic hemostasis were identified. Endoscopists should carefully consider aspiration pneumonia when managing older patients who are on hemodialysis, have a history of stroke, and undergo a longer procedure.


Asunto(s)
Endoscopía Gastrointestinal , Várices Esofágicas y Gástricas/cirugía , Hemorragia Gastrointestinal/cirugía , Técnicas Hemostáticas , Síndrome de Mallory-Weiss/cirugía , Úlcera Péptica Hemorrágica/cirugía , Neumonía por Aspiración/epidemiología , Complicaciones Posoperatorias/epidemiología , Factores de Edad , Anciano , Coagulación con Plasma de Argón , Estudios de Cohortes , Comorbilidad , Cianoacrilatos/uso terapéutico , Várices Esofágicas y Gástricas/epidemiología , Femenino , Hemorragia Gastrointestinal/epidemiología , Encefalopatía Hepática/epidemiología , Humanos , Fallo Renal Crónico/epidemiología , Fallo Renal Crónico/terapia , Ligadura , Modelos Logísticos , Masculino , Síndrome de Mallory-Weiss/epidemiología , Persona de Mediana Edad , Análisis Multivariante , Oportunidad Relativa , Tempo Operativo , Úlcera Péptica Hemorrágica/epidemiología , Diálisis Renal/estadística & datos numéricos , Estudios Retrospectivos , Factores de Riesgo , Accidente Cerebrovascular/epidemiología , Instrumentos Quirúrgicos
13.
Am J Ophthalmol Case Rep ; 34: 102034, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38495594

RESUMEN

Purpose: To report a case of a refractory foveal microaneurysm (MA) that was successfully treated by use of a new surgical procedure. Observations: This study involved a 79-year-old female with an active foveal MA associated with branch retinal vein occlusion in her left eye. Despite anti-vascular endothelial growth factor treatments, the MA remained active without closure, and best-corrected visual acuity (VA) gradually decreased from 20/20 to 20/200. After our new surgical procedure was explained in detail to the patient, written informed consent was obtained from the patient and the surgery was performed. Briefly, following pars plana vitrectomy, the internal limiting membrane in her left eye was peeled and the retina of the external wall of the MA was then gently incised. The exposed MA was then directly grabbed and pulled up onto the retina using 27-gauge microforceps, and photocoagulation was performed. At 3-months postoperative, closure of the MA and improvement in the retinal findings were observed, and best-corrected VA improved to 20/67. Conclusions and importance: We report a case of a refractory foveal MA that was successfully treated with a novel surgical technique that closed the MA, avoided thermal damage to the surrounding tissue, and resulted in improved postoperative VA.

14.
JGH Open ; 8(5): e13078, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38699470

RESUMEN

A woman in her 60s with anemia was diagnosed with a small intestinal intussusception on computed tomography. She underwent a double-balloon endoscopy, which revealed submucosal tumor in the ileum. Suspected to be the cause of anemia and intussusception, surgical intervention was carried out, revealing it to be a schwannoma. Schwannomas of the small intestine are very rare, and because exophytic growths are common, intussusception due to luminal side development is even rarer.

15.
Int J Biol Macromol ; 269(Pt 1): 132040, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38702003

RESUMEN

Decellularized vascular tissue has high potential as a tissue-engineered vascular graft because of its similarity to native vessels in terms of mechanical strength. However, exposed collagen on the tissue induces blood coagulation, and low hemocompatibility is a major obstacle to its vascular application. Here we report that freeze-drying and ethanol treatment effectively modify collagen fiber structure and drastically reduce blood coagulation on the graft surface without exogenous chemical modification. Decellularized carotid artery of ostrich was treated with freeze-drying and ethanol solution at concentrations ranging between 5 and 99.5 %. Collagen fiber distance in the graft was narrowed by freeze-drying, and the non-helical region increased by ethanol treatment. Although in vitro blood coagulation pattern was similar on the grafts, platelet adhesion on the grafts was largely suppressed by freeze-drying and ethanol treatments. Ex vivo blood circulation tests also indicated that the adsorption of platelets and Von Willebrand Factor was largely reduced to approximately 80 % by ethanol treatment. These results indicate that structural modification of collagen fibers in decellularized tissue reduces blood coagulation on the surface by inhibiting platelet adhesion.


Asunto(s)
Coagulación Sanguínea , Colágeno , Adhesividad Plaquetaria , Animales , Adhesividad Plaquetaria/efectos de los fármacos , Coagulación Sanguínea/efectos de los fármacos , Colágeno/química , Ingeniería de Tejidos/métodos , Ensayo de Materiales , Liofilización , Prótesis Vascular , Andamios del Tejido/química , Plaquetas/metabolismo , Plaquetas/química , Materiales Biocompatibles/química , Materiales Biocompatibles/farmacología , Arterias Carótidas/efectos de los fármacos , Humanos , Etanol/química
16.
World J Gastroenterol ; 30(13): 1871-1886, 2024 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-38659488

RESUMEN

BACKGROUND: Real-world data on tofacitinib (TOF) covering a period of more than 1 year for a sufficient number of Asian patients with ulcerative colitis (UC) are scarce. AIM: To investigate the long-term efficacy and safety of TOF treatment for UC, including clinical issues. METHODS: We performed a retrospective single-center observational analysis of 111 UC patients administered TOF at Hyogo Medical University as a tertiary inflammatory bowel disease center. All consecutive UC patients who received TOF between May 2018 and February 2020 were enrolled. Patients were followed up until August 2020. The primary outcome was the clinical response rate at week 8. Secondary outcomes included clinical remission at week 8, cumulative persistence rate of TOF administration, colectomy-free survival, relapse after tapering of TOF and predictors of clinical response at week 8 and week 48. RESULTS: The clinical response and remission rates were 66.3% and 50.5% at week 8, and 47.1% and 43.5% at week 48, respectively. The overall cumulative clinical remission rate was 61.7% at week 48 and history of anti-tumor necrosis factor-alpha (TNF-α) agents use had no influence (P = 0.25). The cumulative TOF persistence rate at week 48 was significantly lower in patients without clinical remission than in those with remission at week 8 (30.9% vs 88.1%; P < 0.001). Baseline partial Mayo Score was significantly lower in responders vs non-responders at week 8 (odds ratio: 0.61, 95% confidence interval: 0.45-0.82, P = 0.001). Relapse occurred in 45.7% of patients after TOF tapering, and 85.7% of patients responded within 4 wk after re-increase. All 6 patients with herpes zoster (HZ) developed the infection after achieving remission by TOF. CONCLUSION: TOF was more effective in UC patients with mild activity at baseline and its efficacy was not affected by previous treatment with anti-TNF-α agents. Most relapsed patients responded again after re-increase of TOF and nearly half relapsed after tapering off TOF. Special attention is needed for tapering and HZ.


Asunto(s)
Colitis Ulcerosa , Inhibidores de las Cinasas Janus , Piperidinas , Pirimidinas , Inducción de Remisión , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Pueblo Asiatico , Colectomía , Colitis Ulcerosa/tratamiento farmacológico , Colitis Ulcerosa/diagnóstico , Inhibidores de las Cinasas Janus/uso terapéutico , Inhibidores de las Cinasas Janus/efectos adversos , Piperidinas/uso terapéutico , Piperidinas/efectos adversos , Pirimidinas/uso terapéutico , Pirimidinas/efectos adversos , Recurrencia , Inducción de Remisión/métodos , Estudios Retrospectivos , Resultado del Tratamiento
17.
Clin J Gastroenterol ; 16(6): 848-853, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37715899

RESUMEN

A 54-year-old man underwent kidney transplantation at the age of 50 for end-stage renal failure owing to diabetic nephropathy. The patient was subsequently treated with three immunosuppressive drugs (tacrolimus, mycophenolate mofetil, and methylprednisolone) to prevent organ rejection, and no renal failure was noted. He visited our department with bloody stools and diarrhea, and a colonoscopy revealed mucosal edema and redness of the entire colon. After excluding infection and drug-induced enteritis based on the endoscopic and pathological findings, he was diagnosed with ulcerative colitis (UC). He was admitted and received a high dose of steroids, but did not demonstrate improvement. We initiated infliximab (IFX), and his symptoms improved within 3 days. After the second IFX treatment, the patient achieved clinical remission and was discharged. After the third IFX dose, the biomarker level became normal, and a colonoscopy after the fourth IFX dose revealed that all ulcers had become scarred and achieved endoscopic remission. The patient continued all medications to prevent organ rejection after the onset of UC and had no graft dysfunction or infection for 1 year.


Asunto(s)
Colitis Ulcerosa , Trasplante de Riñón , Masculino , Humanos , Persona de Mediana Edad , Infliximab/uso terapéutico , Colitis Ulcerosa/tratamiento farmacológico , Colitis Ulcerosa/cirugía , Colitis Ulcerosa/patología , Úlcera , Trasplante de Riñón/efectos adversos , Colonoscopía , Esteroides/uso terapéutico , Resultado del Tratamiento , Fármacos Gastrointestinales/uso terapéutico
18.
J Clin Med ; 12(2)2023 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-36675538

RESUMEN

Preeclampsia is a pregnancy-specific syndrome characterized by hypertension and proteinuria. We retrospectively investigated the clinical features, including choroidal layer thickness and luminal area to stromal area ratio, in a case series of preeclampsia with serous retinal detachment (SRD). The subjects were pregnant women with SRD during hospitalization for preeclampsia from October 2014 to June 2021. Based on medical records, affected eyes, time of onset, fundus examination findings, and subfoveal choroidal thickness (SCT), the choroidal layer thickness and choroidal vascular index (CVI) in each patient was examined. Thirteen eyes from seven patients (mean age 30.7 ± 4.7 years) were included in the study. In all cases, SRD improved without topical ocular treatment. The mean SCT at the initial visit was 424.4 ± 70.5 µm, and all patients had choroidal thickening, which significantly decreased to 286.0 ± 57.9 µm (p < 0.01) at the last visit. The mean choroidal inner layer was 162.7 ± 69.4 µm at the initial visit and 122.3 ± 35.5 µm at the final follow-up visit (p = 0.06), showing no significant difference; however, the mean choroidal outer layer was 261.7 ± 47.6 µm at the initial visit and 163.7 ± 37.1 µm at the final follow-up visit (p < 0.01), thus showing a significant decrease. The mean CVI was 67.2 ± 1.3% at the initial visit, yet it had significantly decreased to 65.4 ± 1.1% (p < 0.01) at the final follow-up visit. The findings of this study show that SRD with preeclampsia is associated with increased thickening of the choroidal outer layer, especially in the choroidal luminal area.

20.
Int J Rheum Dis ; 26(12): 2572-2575, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37287416

RESUMEN

Gastrointestinal manifestations are a very rare complication of dermatomyositis (DM) and are much less frequent in adult cases than in juvenile cases. Only a few previous papers have reported adult patients who had DM with anti-nuclear matrix protein 2 (anti-NXP2) antibodies and who developed gastrointestinal ulcers. Herein, we report a similar case of a 50-year-old man who had DM with anti-NXP2 antibodies followed by relapsing multiple gastrointestinal ulcers. Even after the administration of prednisolone, his muscle weakness and myalgia deteriorated and gastrointestinal ulcers relapsed. In contrast, intravenous immunoglobulin and azathioprine improved his muscle weakness and gastrointestinal ulcers. Based on the parallel disease activity of the muscular and gastrointestinal symptoms, we considered that his gastrointestinal ulcers were a complication of DM with anti-NXP2 antibodies. We also propose that early intensive immunosuppressive therapy would be required for the muscular and gastrointestinal symptoms in DM with anti-NXP2 antibodies.


Asunto(s)
Dermatomiositis , Masculino , Adulto , Humanos , Persona de Mediana Edad , Dermatomiositis/complicaciones , Dermatomiositis/diagnóstico , Dermatomiositis/tratamiento farmacológico , Úlcera/diagnóstico , Úlcera/tratamiento farmacológico , Úlcera/etiología , Inmunoglobulinas Intravenosas , Inmunosupresores/uso terapéutico , Debilidad Muscular , Autoanticuerpos
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