摘要
ABSTRACT A young woman presented at our clinic with sudden visual loss in the right eye, recurrent vertigo, and right-sided tinnitus. We performed a complete ophthalmological evaluation. This revealed effects of the condition on the small arterioles of the peripheral retina. Susac syndrome is characterized by the clinical triad of retinal arteriolar occlusions, cochleovestibular manifestations, and encephalopathy (which can be identified by neuroimaging abnormalities). Early diagnosis and immunosuppressive therapy improved the patient's visual acuity and the remission of her other symptoms. Hemi-central retinal artery occlusion is an atypical neuro-ophthalmological finding in this disease. However, its identification as a sign of Susac syndrome may facilitate timely diagnosis and accurate treatment.
摘要
La isquemia mesentérica aguda (IMA) es una emergencia médico-quirúrgica poco frecuente con alta morbimortalidad. Corresponde a una interrupción brusca del aporte sanguíneo a un segmento del intestino, produciendo isquemia, daño celular, necrosis intestinal y eventualmente la muerte. La principal etiología de este cuadro es la oclusión arterial de tipo embólica, seguida por la trombótica, no oclusiva y trombótica venosa. Es una patología infrecuente con una incidencia baja, de 12 por 100.000 habitantes en series internacionales. Su principal síntoma es el dolor abdominal tipo cólico de comienzo brusco, vómitos y diarrea, esta última sucediendo posteriormente. En el examen físico se pueden constatar signos de shock y distensión abdominal. Ante la sospecha, los pacientes hemodinámicamente inestables deben ser llevados urgentemente a laparotomía exploradora, y en aquellos estables, se debe solicitar un Angio-TC para confirmar el diagnóstico y planificar el tratamiento. Existen dos métodos para tratar esta patología: la cirugía abierta y la cirugía endovascular o mínimamente invasiva. Finalmente, con el avance de estos nuevos métodos, la tasa de mortalidad ha disminuido, significativamente, en la última década.
Acute mesenteric ischemia (AMI) is a rare medical-surgical emergency that must be treated early due to its high morbidity and mortality. It corresponds to a sudden interruption of the blood supply to a segment of the intestine, producing ischemia, cell damage, intestinal necrosis and eventually death if it is not treated. The main etiology of this condition is embolic-type arterial occlusion, followed by thrombotic, nonocclusive, and venous thrombotic. It is an infrequent pathology with a low incidence of 12 per 100,000 inhabitants in international series. During the information collection, no data was found on the Chilean population since before 1983. Its main symptom is colicky abdominal pain with a sudden onset, vomiting and diarrhea that begins after the pain. On physical examination, signs of shock and abdominal distention may be noted. Hemodynamically unstable patients should be urgently taken to exploratory laparotomy as soon as the condition is suspected, and in stable patients, an angio-CT should be requested to confirm the diagnosis and plan treatment. There are two methods to treat this pathology, open surgery and endovascular or minimally invasive surgery. The form of therapy depends on the preoperative or intraoperative findings and the type of etiology. Finally, with the advancement of these new methods, the mortality rate has decreased in the last decade.
摘要
SUMMARY: Hypoxic preconditioning is known to induce neuroprotection, but its effects and pathways in chronic brain pathology still unknown. The aim was to establish an involvement of a7 subunit of nicotinic acetylcholine receptors (a7nAchRs), and sirtuins of 1 (SIRT1) and 3 (SIRT3) types in the effects of hypoxic hypobaric preconditioning on brain damage in mice with chronic cerebral hypoperfusion caused by the left common carotid artery occlusion. The male C57/6j (C57, wild type) and a7nAchRs(-/-) mice were divided to six experimental groups (10 mice per group): sham-operated C57, C57 with chronic cerebral hypoperfusion, C57 with hypoxic hypobaric preconditioning and chronic cerebral hypoperfusion, sham-operated a7nAchRs(-/-) mice, a7nAchRs(-/-) with chronic cerebral hypoperfusion, a7nAchRs(-/-) with hypoxic hypobaric preconditioning and chronic cerebral hypoperfusion. For preconditioning, mice were exposed to hypoxia by "lifting" in barochamber to simulated altitude of 5600 m a.s.l. for 1 h/day on 3 consecutive days before surgical manipulation. Expressions of SIRT1, SIRT3 in brain tissue, and histopathological changes of the hippocampi were examined. It was shown that 8-week chronic hypoperfusion of the brain, caused by unilateral occlusion of the common carotid artery, was accompanied by injury to the neurons of the hippocampi of both hemispheres, which was more pronounced on the side of the occlusion. This damage, as well as the mechanisms of neuroprotection induced by hypoxic preconditioning, were maintained for at least 8 weeks by mechanisms mediated through a7nAChRs. Deficite of a7nAChRs was accompanied with reduction of neuronal damage caused CCH in 8 weeks, as well as preconditioning effects, and lead to compensatory activation of regulatory and protective mechanisms mediated by SIRT1, in normal conditions and in CCH. In wild-type (C57) mice, protective mechanisms in CCH were realized to a greater extent by increased expression of SIRT3 in both hemispheres of the brain.
Se sabe que el precondicionamiento hipóxico induce neuroprotección, pero aún se desconocen sus efectos y vías en la patología cerebral crónica. El objetivo fue establecer la participación de la subunidad a7 de los receptores nicotínicos de acetilcolina (a7nAchR) y las sirtuinas de tipo 1 (SIRT1) y 3 (SIRT3) en los efectos del precondicionamiento hipóxico hipobárico sobre el daño cerebral en ratones con hipoperfusión cerebral crónica causada por la oclusión de la arteria carótida común izquierda. Los ratones macho C57/6j (C57, tipo salvaje) y a7nAchRs(-/-) se dividieron en seis grupos experimentales (10 ratones por grupo): C57 con operación simulada, C57 con hipoperfusión cerebral crónica, C57 con precondicionamiento hipobárico hipóxico y crónica. hipoperfusión cerebral, ratones a7nAchRs(-/-) operados de forma simulada, a7nAchRs(-/-) con hipoperfusión cerebral crónica, a7nAchRs(-/-) con precondicionamiento hipobárico hipóxico e hipoperfusión cerebral crónica. Para el preacondicionamiento, los ratones fueron expuestos a hipoxia "levantándolos" en una cámara de barro a una altitud simulada de 5600 m s.n.m. durante 1 h/día durante 3 días consecutivos antes de la manipulación quirúrgica. Se examinaron las expresiones de SIRT1, SIRT3 en tejido cerebral y los cambios histopatológicos de los hipocampos. Se demostró que la hipoperfusión cerebral crónica de 8 semanas, causada por la oclusión unilateral de la arteria carótida común, se acompañaba de lesión de las neuronas del hipocampo de ambos hemisferios y que era más pronunciada en el lado de la oclusión. Este daño, así como los mecanismos de neuroprotección inducidos por el precondicionamiento hipóxico, se mantuvieron durante al menos 8 semanas mediante mecanismos mediados por a7nAChR. El déficit de a7nAChR se acompañó de una reducción del daño neuronal causado por CCH en 8 semanas, así como de efectos de precondicionamiento, y condujo a una activación compensatoria de mecanismos reguladores y protectores mediados por SIRT1, en condiciones normales y en CCH. En ratones de tipo salvaje (C57), los mecanismos de protección en CCH se realizaron en mayor medida mediante una mayor expresión de SIRT3 en ambos hemisfe- rios del cerebro.
Subject(s)
Animals , Mice , Brain Ischemia , Sirtuin 1/metabolism , Sirtuin 3/metabolism , alpha7 Nicotinic Acetylcholine Receptor/metabolism , Hypoxia , Cerebrovascular Circulation , Blotting, Western , Carotid Stenosis摘要
Introducción: Los dientes anteriores tienen una función predominante en el sistema estomatognático, esencial para la estética, la fonación y la masticación. Objetivo: Caracterizar a los adultos con guía anterior de la oclusión dentaria disfuncional según variables clínicas y epidemiológicas. Métodos: Se realizó un estudio descriptivo y transversal, desde octubre de 2021 hasta abril de 2022, en la Clínica Estomatológica Docente 3 de Octubre de Las Tunas. El universo estuvo conformado por 825 historias clínicas que contenían el diagnóstico de pacientes con bruxismo, oclusión traumática y trastornos temporomandibulares, quienes presentaban disfunción de la guía anterior de la oclusión dentaria. Mediante el muestreo no probabilístico intencional, fue seleccionada una muestra de 615 con fórmula dentaria íntegra o desdentamiento parcial de clase III de Kennedy y atención estomatológica concluida o inactivación de los procesos de caries e inflamatorios agudos. Resultados: Primaron el sexo femenino (54,8 %) y las edades de 40-49 años (33,5 %). El bruxismo prevaleció como diagnóstico clínico (41,9 %) con predominio del correspondiente al sueño (39,1 %), el secundario (51,2 %), el probable (59,7 %) y el moderado (69,4 %); entre sus clasificaciones más relevantes se destacó el sistema estomatognático disfuncional (84,4 %). Las manifestaciones clínicas dentarias predominantes fueron las facetas de desgaste (87,5 %). Conclusiones: La caracterización de los pacientes con guía anterior de la oclusión dentaria disfuncional permite establecer una panorámica actualizada de esta problemática de salud para un mejor seguimiento y tratamiento a dichos pacientes.
Introduction: Anterior teeth have a predominant function in the stomatognatic system, essential for the aesthetics, phonation and mastication. Objective: To characterize adults with anterior guide of dysfunctional dental occlusion according to clinical and epidemiological variables. Methods: A descriptive and cross-sectional study, was carried out from October, 2021 to April, 2022, in the 3 de Octubre Teaching Stomatological Clinic from Las Tunas. The universe was formed by 825 medical records that contained the diagnosis of patients with bruxism, traumatic occlusion and temporomandibular disorders who presented anterior guide of the dysfunctional dental occlusion. By means of the intentional non probabilistic sampling, a sample of 615 with entire dental formula or class III partial toothlessness of Kennedy and concluded stomatologic care or inactivation of the cavity and acute inflammatory processes was selected. Results: There was a prevalence of the female sex (54.8%) and the 40-49 age group (33.5%). Bruxism prevailed as clinical diagnosis (41.9%) with prevalence of the corresponding to sleep (39.1%), secondary (51.2%), probable (59.7%) and moderate (69.4%); among the most outstanding classifications was the dysfunctional stomatognatic system (84.4%). The predominant dental clinical manifestations were the wear facets (87.5%). Conclusions: The characterization of patients with anterior guide of the dysfunctional dental occlusion allows to establish an up-to-date panoramic of this health problem, for a better follow-up and treatment to these patients.
摘要
Introducción. Se describe la utilidad del umbral crítico de administración (CAT por su denominación en inglés) como herramienta para la reanimación hemostática en pacientes con trauma severo y oclusión endovascular aórtica. Métodos. Revisión retrospectiva de pacientes adultos con hemorragia por trauma, con o sin oclusión endovascular aórtica (REBOA), atendidos entre enero de 2015 y junio de 2020, en un centro de trauma nivel I en Cali, Colombia. Se registraron variables demográficas, severidad del trauma, estado clínico, requerimiento transfusional, tiempo hasta CAT+ y CAT alcanzado (1, 2 ó 3). Resultados. Se incluyeron 93 pacientes, se utilizó REBOA en 36 y manejo tradicional en 57. El grupo REBOA presentó mayor volumen de sangrado (mediana de 3000 ml, RIC: 1950-3625 ml) frente al grupo control (mediana de1500 ml, RIC: 700-2975ml) (p<0,001) y mayor cantidad de glóbulos rojos transfundidos en las primeras 6 horas (mediana de 5, RIC:4-9); p=0,015 y en las primeras 24 horas (mediana de 6, RIC: 4-11); p=0,005. No hubo diferencias estadísticamente significativas en número de pacientes CAT+ entre grupos o tiempo hasta alcanzarlo. Sin embargo, el estado CAT+ durante los primeros 30 minutos de la cirugía fue mayor en grupo REBOA (24/36, 66,7 %) frente al grupo control (17/57, 29,8 %; p=0,001), teniendo este mayor tasa de mortalidad intrahospitalaria frente a los pacientes CAT-. Conclusión. El umbral crítico de administración es una herramienta útil en la reanimación hemostática de pacientes con trauma y REBOA, que podría predecir mortalidad precoz.
Introduction. The objective is to describe the utility of the Critical Administration Threshold (CAT) as a tool in hemostatic resuscitation in patients with severe trauma and REBOA. Methods. Retrospective review between January 2015 and June 2020 of adult patients with hemorrhage secondary to trauma with or without REBOA in a level I trauma center in Cali, Colombia. Demographic variables, trauma severity, clinical status, transfusion needs, time to CAT+ and number of CAT achieved (1, 2 or 3) were recorded. Results. Ninety-three patients were included, in which REBOA was used in 36 and traditional management in 57. The REBOA group had a higher bleeding volume (3000 ml), IQR: 1950-3625 ml vs the control group (1500 ml, IQR: 700-2975 ml) (p<0.001) and a higher rate of PRBC units transfused in the first 6 hours (median 5, IQR: 4-9); p=0.015 and in the first 24 hours (median 6, IQR: 4-11); p=0.005. There were no statistically significant differences in the number of CAT+ patients between groups or time to CAT+. However, CAT+ status during the first 30 minutes of surgery was higher in the REBOA Group (24/36, 66.7%) vs. the control group (17/57, 29.8%; p=0.001), having this group a higher in-hospital mortality rate vs. CAT- patients. Conclusion. CAT is a useful tool in the hemostatic resuscitation of patients with trauma and REBOA that could predict early mortality.
Subject(s)
Humans , Wounds and Injuries , Cardiopulmonary Resuscitation , Endovascular Procedures , Aorta , Blood Transfusion , Balloon Occlusion , Hemorrhage摘要
Objective To observe the severity of cerebral edema after mechanical thrombectomy in the patients with acute ischemic stroke caused by large vessel occlusion,and to statistically analyze the related fac-tors affecting the prognosis quality of the patients,so as to guide the patients to conduct scientific interven-tion.Methods Ninety-one patients with acute ischemic stroke due to anterior circulation large vessel occlusion treated with mechanical thrombectomy in this hospital from October 2021 to October 2022 served as the ana-lytic subjects.According to the severity of brain edema,they were divided into the group Ⅰ(mild),group Ⅱ(moderate),and group Ⅲ(severe);after 12-week treatment,the improved Rankin scale was used to evaluate the prognosis.The patients with good prognosis were included in the excellent group,and the patients with poor prognosis were included in the poor group.Single factor and multifactor logistic analysis was used to ana-lyze the influencing factors and prognostic related factors of different degrees of brain edema.Results The univariate analysis showed that the percentage of patients with NIHSS score at admission ≥15,time from on-set to thrombolysis ≥6 h,history of hypertension,successful vascular recanalization and good collateral circu-lation were significantly different among the groups Ⅰ,Ⅱ and Ⅲ(P＜0.05);the multivariate logistic regres-sion analysis results showed that the NIHSS score at admission ≥15,time from onset to thrombolysis ≥6 h,and hypertension history were the risk factors leading to severe cerebral edema,while successful recanalization of blood vessels was a protective factor for cerebral edema(P＜0.05).The univariate analysis showed that in the good prognosis group the percentage of patients had good circulation of lateral branches,successful reca-nalization of blood vessels,severe cerebral edema,hypertension,time from onset to thrombolysis ≥6 h,and NIHSS score ≥15 at admission were significantly different from those in the poor prognosis group(P＜0.05).The multivariate logistic regression analysis results showed that severe cerebral edema,time from onset to thrombolysis ≥6 h and NIHSS score ≥15 at admission were the risk factors for poor prognosis,while good collateral circulation and successful recanalization of blood vessels were the positive factors for good prognosis(P＜0.05).Conclusion Mechanical thrombectomy patients with hypertension and time from onset to throm-bolysis ≥6 h and NIHSS score at admission ≥15 have more severe brain edema after treatment;severe brain edema,time from onset to thrombolysis ≥6 h,NIHSS score at admission ≥15 were the adverse factors affect-ing the prognosis of the patients with mechanical thrombectomy.
摘要
The congenital heart disease with decreased pulmonary blood flow is one type of congenital heart disease characterized by reduced pulmonary blood flow. Common clinical types include tetralogy of Fallot，pulmonary atresia，double outlet right ventricle，and other complex malformations associated with pulmonary artery stenosis. Due to the lack of pulmonary blood supply from the right ventricle，children with this condition often have major aortopulmonary collateral arteries（MAPCAs）or the ductus arteriosus participating in pulmonary circulation for blood supply. Research has revealed that MAPCAs are important factors which cause the increase of mechanical ventilation time，intensive care unit stay time，complication rate and mortality after radical surgical treatment of congenital heart disease with decreased pulmonary blood flow. Therefore，the treatment of MAPCAs in perioperative period is crucial. This article summarizes the research progress of MAPCAs distribution and influence，diagnosis and evaluation，and treatment methods，to provide the reference for clinicians to standardize MAPCAs treatment.
摘要
Objective To discuss the effect of simultaneous coronary angiography plus percutaneous coronary intervention(PCI)and selective PCI on the surgical success rate in treating coronary chronic total occlusion(CTO).Methods The clinical data of a total of 147 consecutive patients with coronary CTO,who received PCI treatment at the Jinhua Municipal Central Hospital of China between January 1,2020 and December 31,2022,were retrospectively analyzed.According to whether the patient received PCI immediately after coronary angiography or not,the patients were divided into simultaneous PCI group(n=64)and selective PCI group(n=83).The clinical data and surgical success rate were compared between the two groups.Multivariate logistic regression analysis was used to determine the factors affecting the success of the PCI surgery for coronary CTO.Results The lesion's length of coronary CTO in the simultaneous PCI group was 35 mm,which was obviously shorter than 50 mm in the selective PCI group(P=0.022).No statistically significant differences in the other angiographic findings existed between the two groups(all P＞0.05).The surgical success rate in the simultaneous PCI group was 78.1%,which was remarkably lower than 88.0%in the selective PCI group(P=0.034).Multivariate logistic regression analysis revealed that simultaneous PCI(OR=4.617,95%CI=1.900-11.221,P=0.001),no stump lesion(OR=4.381,95%CI=1.821-10.452,P=0.001),occlusion length≥20 mm(OR=2.462,95%CI=1.030-5.887,P=0.043),and surgical complications(OR=8.688,95%CI=1.573-47.971,P=0.013)were the independent factors influencing the success of PCI surgery for coronary CTO.Conclusion For the treatment of coronary CTO,the simultaneous coronary angiography and PCI treatment may increase the risk of surgical failure.(J Intervent Radiol,2024,32:52-56)
摘要
Objective To make a further understanding of the curative efficacy of Surpass Streamline flow diversion treatment for intracranial aneurysms.Methods The clinical data of a total of 68 patients with intracranial aneurysm,who received Surpass Streamline flow diverter treatment at the Affiliated Suzhou Hospital of Anhui Medical University of China between January 2020 and January 2022,were retrospectively analyzed.The preoperative and postoperative changes in hemodynamic parameters,and the preoperative and postoperative 3-,6-,and 12-month modified Rankin Scale(mRS)scores were collected.The imaging findings were analyzed,and the status of aneurysm occlusion was determined.Results Compared with the preoperative values,the postoperative blood flow velocity at the WSS and the tumor neck was decreased,while the blood flow velocity of LSA,RRT,tumor carrier artery and M1 on the affected side was increased(P＜0.05),and the blood flow velocity of Ml on the healthy side showed no significant change(P＞0.05).After surgery,the proportion of patients with low-grade mRS score gradually increased with the time passing,and the difference was statistically significant(P＜0.05).The postoperative 6-month and 12-month incidences of in-stent stenosis were 7.35％ and 8.82％ respectively,incidences of aneurysmal complete occlusion were 52.94％and 63.24％ respectively,and the differences were not statistically significant(P＞0.05).Of the 68 patients having been treated with Surpass Streamline flow diverter,4 patients developed ischemic complications,and 2 of the 4 presented with blurred vision and cortical blindness,one patient had limb weakness and one patient had a in-stent thrombus,all of which were effectively relieved after intervention therapy.Conclusion For the treatment of intracranial aneurysms,Surpass Streamline flow diversion treatment has good efficacy,it can improve hemodynamics,besides,it carries high postoperative complete aneurysmal occlusion rate with satisfactory safety.Therefore,this technique is worthy of clinical popularization.(J Intervent Radiol,2024,33:285-288)
摘要
Objective To analyze the consistency between computer tomography angiography(CTA)and digital subtraction angiography(DSA)in evaluating the global limb anatomic staging system(GLASS)stage of patients with chronic limb-threatening ischemia(CLTI).Methods The clinical data of patients with CLTI,who were admitted to the First Affiliated Hospital of Xi'an Jiaotong University of China to receive treatment between January 2017 and December 2020,were retrospectively analyzed.Taking the DSA assessment as the gold standard,the consistency of CTA and DSA in evaluating the GLASS stage of patients with CLTI was analyzed.Results In the assessment of GLASS stage of CLTI,CTA showed strong agreement with DSA.The weighted Kappa coefficient of CTA and DSA for the staging of femoropopliteal segment was 0.798(95％CI=0.722-0.873,P＜0.01),and the weighted Kappa coefficient of CTA and DSA for the staging of infrapopliteal artery segment was 0.785(95％ CI=0.725-0.845,P＜0.0l).For the overall staging of GLASS,the weighted Kappa coefficient of CTA and DSA was 0.832(95％ CI=0.752-0.91 1,P＜0.01).All the above results indicated that a very strong consistency existed between CTA and DSA in evaluating the GLASS stage of patients with CLTI.Conclusion CTA examination of lower limb can accurately evaluate GLASS score and stage of CLTI patient's target lesions,which is helpful in diagnosing lower extremity arteriosclerosis occlusion disease as well as in assessing the technical difficulty degree of its revascularization operation.(J Intervent Radiol,2024,33:300-303)
摘要
Objective To investigate the effect of dynamic monitoring of occlusal force on the final therapeutic effect and the change of periodontal supporting tissue during combined periodontal orthodontic treatment.Methods The periodontal clinical index of 20 patients with traditional periodontal orthodontic treatment and 20 patients with combined periodontal orthodontic treatment assisted by T-Scan Ⅲ and Anycheck digital occlusion analysis system were compared before,during and after treatment,as well as the changes of bite force,bite time and tooth mobility in the experimental group.Results The depth of periodontal pocket(PD),loss of attachment(AL),bleeding index(BI)and tooth looseness were significantly reduced after combined periodontal orthodontic treatment in both groups.In the control group,the percentage of anterior and posterior biting force changed obviously,and the occlusion force balance was improved.Conclusion The combined treatment of periodontitis and orthodontics can improve the periodontal tissue of patients with periodontitis,and T-Scan system can observe and guide the adjustment of occlusal and better achieve occlusion force balance.
摘要
Objective:To investigate the effects of the taurochenodeoxycholic acid(TCDCA)on cartilage degeneration in tem-poromandibular joint osteoarthritis(TMJ OA).Methods:36 female SD rats aged 6 weeks were randomly divided into 3 groups:con-trol group(CON),unilateral anterior crossbite group(UAC),UAC plus TCDCA injection group(UAC+TCDCA).UAC model was es-tablished in all rats in UAC and UAC+TCDCA groups.Samples were collected at 8 and 12 weeks(control group,UAC group,UAC+TCDCA group)after set up of the experiment(n=6),and TMJ morphological examination was performed.The expression of CYP7A1,BAAT and TGR5 in the tissue and cells was examined by immunohistochimical staining.Results:(1)Compared with the CON group of the same age,the cells in the condylar cartilage were disordered,the cartilage matrix was reduced and thinner in UAC group.Compared with UAC group of the same age,cell arrangement,cell number,cartilage matrix and cartilage thickness were im-proved in UAC+TCDCA group(P＜0.05).(2)Compared with the CON group of the same age,the positive cells for TCDCA-specific receptor TGR5 and the key enzymes CYP7A1 and BAAT were mainly distributed in the anterior hypertrophic layer and hypertrophic layer at each time point.The number of positive cells in the UAC group was significantly reduced compared with the CON group.Conclusion:TCDCA has obvious therapeutic effects on the degeneration in TMJ OA.
摘要
BACKGROUND:The treatment of post-stroke dysphagia with Lipopharyngeal Qibi Formula has achieved good efficacy,and 5-hydroxytryptamine in peripheral serum and neurotransmitters in the nucleus tractus solitarius are closely related to swallowing.Therefore,this study was conducted to explore the modulatory effects of peripheral serum and nucleus tractus solitarius neurotransmitters in swallowing by using modern medical experimental methods such as molecular biology,thereby developing new ideas for the exploration of their mechanisms. OBJECTIVE:To verify the therapeutic effect of Lipopharyngeal Qibi Formula on post-stroke dysphagia and to investigate its mechanism of action. METHODS:Thirty-eight Sprague-Dawley rats were randomly divided into model group(n=14),treatment group(n=14)and sham-operated group(n=10).Animals in the model and treatment groups were modeled by reperfusion after 90 minutes of transient cerebral ischemia by wire bolus method.At 6 hours after modeling,neurological function was scored,and rats with a score of 2 were selected for subsequent experiments.The treatment group was given compound Lipopharyngeal Qibi Formula by gavage starting from the 2nd day after modeling and the remaining two groups were given normal saline by gavage.Changes in body mass,24-hour food and water intake were recorded on days 2,7,14 and 30.The swallowing initiation response time and the number of swallows were detected using a biosignal collector and a tonic transducer on days 14 and 30.After the swallowing test,the ischemic area of the brain in each group was measured by TTC staining.The expression of 5-hydroxytryptamine in the nucleus tractus solitarius of the medulla oblongata was measured by immunohistochemistry.The mRNA and protein expression levels of BCL-2 and BAX in the insula,premotor cortex,cingulate cortex and thalamus of rats in each group were measured by RT-PCR and Western blot,respectively. RESULTS AND CONCLUSION:Compared with the sham-operated group,the body mass,24-hour food intake and water intake were reduced,the swallow initiation response time was prolonged,and the number of swallows was reduced in the treatment and model groups at day 14 of gavage(P＜0.05).Compared with the model group,the body mass,24-hour food intake and water intake of rats were increased in the treatment group at day 30 of gavage(P＜0.05),but were still lower than those in the sham-operated group.Compared with the model group,the swallow initiation reaction time was shortened and the number of swallows increased in the treatment group,but the number of swallows was still significantly lower than that in the sham-operated group(P＜0.05).Cerebral ischemia area was reduced in the treatment group compared with the model group,and the number of 5-hydroxytryptamine-positive cells in the nucleus tractus solitarius of the medulla oblongata was increased in the treatment group compared with the model group,but it was still significantly lower than that in the sham-operated group(P＜0.05).Compared with the model group,the expression of BCL-2 mRNA and protein in the insula,cingulate cortex and thalamus of rats in the treatment group were significantly increased,the expression of BAX mRNA and protein were significantly decreased,and the BCL-2/BAX ratio was significantly increased(P＜0.05).To conclude,the Chinese herbal compound Lipopharyngeal Qibi Formula could improve the number of swallows and swallowing initiation response time,as well as 24-hour food intake,body mass and other swallowing-related indexes in rats with post-stroke dysphagia.The mechanism of action may be achieved by improving the area of cerebral ischemia,inhibiting the apoptosis of neuronal cells in the insula,cingulate cortex and thalamus of rats,thus improving the regulation of the higher centers on the medulla oblongata swallowing center,and regulating the level of 5-hydroxytryptamine in the nucleus tractus solitarius.
摘要
BACKGROUND:Temporomandibular joint osteoarthritis is a common oral disease with a high incidence.However,temporomandibular joint osteoarthritis is not easy to be detected in the early stage,and it is difficult to obtain clinical pathological specimens,so it is difficult to carry out related research.The application of digital 3D printing technology to animal models of Temporomandibular joint osteoarthritis increases the consistency of the animal models,thus promoting the study of temporomandibular joint osteoarthritis. OBJECTIVE:To establish a standardized animal model of temporomandibular joint osteoarthritis using novel digital technology. METHODS:According to the different modeling methods of unilateral anterior crossbite,30 female Sprague-Dawley rats were randomly divided into traditional model group,digital model group,and control group(n=10 per group).Cartilage specimens of the condyles were collected at 4 and 8 weeks after modeling.The apparent morphology was observed by stereoscopic microscope.The pathological morphology was observed by hematoxylin-eosin staining and Safranin O/fast green staining.Changes in the expression of interleukin-1β and tumor necrosis factor-α were observed by ELISA,and changes in the expression of aggrecan,type Ⅱ collagen and matrix metalloproteinase-13 were observed by immunohistochemical staining. RESULTS AND CONCLUSION:Different degrees of degeneration were observed in the digital and traditional model groups.The body mass of rats in both the model groups decreased during the 1st week after intervention and subsequently demonstrated growth trend and were significantly lower than that in the control group.The results of stereoscopic microscope showed that at 4 and 8 weeks after modeling,the deformation and defect degree of the digital model group was significantly higher than that of the traditional model group.At these two time points,the Osteoarthritis Research Society International scores of the digital model group and the traditional model group were higher than those of the control group,and the Osteoarthritis Research Society International score of the digital model group was higher than that of the traditional model group(P＜0.05).Histopathological observation showed that the modified Mankin score and Osteoarthritis Research Society International score of the two model groups were significantly higher than those of the control group of the same age at 4 and 8 weeks after modeling(P＜0.05).Immunohistochemical staining results showed that at two time points,compared with the control group of the same age,the expression of aggrecan and type Ⅱ collagen decreased in the traditional model group and the digital model group,while the expression of matrix metalloproteinase 13 increased(P＜0.05).ELISA results showed that the expression levels of inflammatory factors interleukin-1β and tumor necrosis factor-α in the traditional and digital model groups were higher than those in the control group at 8 weeks,and the expression levels of interleukin-1β and tumor necrosis factor-α in the digital model group were higher than those in the traditional model group(P＜0.05).To conclude,the personalized metal tube designed and produced by 3D printing technology can quickly guide the osteoarthritis-like lesions of the temporomandibular joint without repeated trial and adjustment,which is reproducible and suitable for promotion and application.
摘要
Objective To analyze the causal relationship between obesity and central retinal artery occlusion(CRAO)based on body mass index(BMI),which is commonly used to measure obesity,and Mendelian randomization(MR)method.Methods Two-sample MR analysis was performed using summary statistics from genome-wide associa-tion studies.Exposed genetic tools were divided into the men group(n=60 586,SNP=2 736 876,European men)and women group(n=171 977,SNP=2 494 613,European women);CRAO was selected as the outcome.The instrumental variable for BMI came from the Integrative Epidemiology Unit(IEU)publicly available data;the outcome CRAO data came from the FinnGen database.Inverse variance weighting(IVW)and weighted median(WM)were used to analyze the poten-tial relationship between BMI and CRAO.Results IVW showed that the increased BMI level significantly increased the risk of CRAO in men[OR=4.57,95％CI:1.32-15.82,P=0.016]and the risk of CRAO in women[OR=3.48,95％CI:1.40-8.63,P=0.007].Meanwhile,the WM and MR-Egger analysis results supported the above conclusions.In addition,there was no heterogeneity or pleiotropy in the results of this study.Conclusion The increase in BMI is positively corre-lated with the occurrence of CRAO.This study provides an effective CRAO prevention strategy for asymptomatic patients with elevated BMI levels.
摘要
Objective To compare the clinical outcomes and retinal volume changes in patients with ischemic and non-ischemic macular edema secondary to branch retinal vein occlusion(BRVO-ME)using optical coherence tomography angiography(OCTA).Methods The clinical data of 34 ischemic BRVO-ME patients(34 eyes,ischemic group)and 21 non-ischemic BRVO-ME patients(21 eyes,non-ischemic group)were retrospectively analyzed.Patients in both groups re-ceived intravitreal injections of ranibizumab.The best corrected visual acuity(BCVA)and retinal volume of the macular ar-ea were assessed before,1 day,1 week,1 month,3 months and 6 months after the treatment.Results The BCVA(log-MAR)at 1 day after the treatment was 0.63±0.37 in the ischemic group and 0.44±0.22 in the non-ischemic group,and the difference was statistically significant(P=0.017).The retinal volumes of the outer retina,the full retina,and the Farafovea and Perifovea subdivisions of the full retina before the treatment were(6.42±1.90)mm3,(8.75±1.82)mm3,(3.20±0.87)mm3 and(5.10±0.89)mm3 in the ischemic group and(5.52±1.57)mm3,(7.83±1.56)mm3,(2.80± 0.71)mm3,and(4.66±0.77)mm3 in the non-ischemic group,respectively;1 day after treatment,they were(4.97± 1.18)mm3,(7.46±1.47)mm3,(2.62±0.60)mm3 and(4.53±0.80)mm3 in the ischemic group and(4.25±0.48)mm3,(6.58±0.56)mm3,(2.26±0.26)mm3 and(4.06±0.40)mm3 in the non-ischemic group,respectively;at 1 week after the treatment,they were(4.40±0.82)mm3,(6.90±0.85)mm3,(2.38±0.36)mm3 and(4.24±0.49)mm3 in the ischemic group and(4.04±0.35)mm3,(6.33±0.49)mm3,(2.15±0.19)mm3 and(3.95±0.35)mm3 in the non-ische-mic group,respectively,and the differences between the two groups were statistically significant(all P＜0.05).The a-mount of retinal volume change from baseline in the outer retina and the full retina was(-2.48±2.38)mm3 and(-2.54±2.38)mm3 in the ischemic group,and(-1.31±1.58)mm3 and(-1.38±1.58)mm3 in the non-ischemic group at 1 month after treatment,respectively,and the differences between the two groups were statistically significant(both P＜0.05).Conclusion Ranibizumab is effective in treating both ischemic and non-ischemic BRVO-ME.The short-term visu-al prognosis is better in the non-ischemic group than the ischemic group,and the retinal volume is higher in the ischemic group than the non-ischemic group.However,no significant difference is observed in the visual prognosis or retinal volume between the two groups after long-term treatment.
摘要
Objective To investigate the value of coronary computed tomography angiography(CCTA)for the non-invasive discrimination of chronic total occlusion(CTO)and subtotal occlu-sion(SO).Methods A total of 134 elderly patients undergoing CCTA and invasive coronary angio-graphy in our hospital from January 2019 to December 2021 were enrolled,and assigned into CTO group(62 cases)and SO(72 cases)according to the results of the examinations.Occlusion length,shape of proximal stump(blunt/conical),and collateral vessels were measured as anatomical find-ings.Transluminal attenuation gradient was obtained by a post-processing software.Univariate and multivariate logistic regression analyses were performed to explore factors related to CTO.Re-stricted cubic splines with three knots at the 10th,50th,and 90th percentiles were used to flexibly model the association of the factors with CTO,and ROC curve was plotted to evaluate the per-formance.Results Diabetes(OR=0.423,95％CI:0.186-0.963),occlusion length(OR=1.088,95％CI:1.031-1.148)and blunt-shaped stump(OR=2.453,95％CI:1.042-5.773)were inde-pendent predictors for discriminating CTO and SO(P＜0.05,P＜0.01).ROC curve analysis showed that the AUC value of occlusion length in the discrimination was 0.718(95％CI:0.634-0.792,P=0.001).Conclusion CCTA can be used to discriminate CTO and SO in elderly patients.
摘要
Objective To explore the influencing factors for long-term poor prognosis of patients with acute ischemic stroke with large vessel occlusion(LVO-AIS)in the course of intravascular treatment.Methods A total of 123 LVO-AIS patients undergoing vascular recanalization in Department of Neurology of Tianmen First People's Hospital from January 2021 to December 2022 were consecutively recruited,and according to their modified Rankin Scale(mRS)score at 90 d after surgery,they were divided into good prognosis group(mRS≤2,n=58)and poor prognosis group(mRS＞2,n=65).Their general clinical data were compared between the two groups.Multi-variate logistic regression analysis was applied to identify the risk factors of poor prognosis in LVO-AIS patients.Results The good ratio of collateral circulation in good prognosis group was higher than that in poor prognosis group(94.83％vs 47.69％,P＜0.01).Multivariate logistic regression analysis showed that age(OR=1.092,95％CI:0.989-1.205,P=0.046),diabetes(OR=0.122,95％CI:0.026-0.561,P=0.007),symptomatic intracranial hemorrhage(OR=0.038,95％C I:0.002-0.656,P=0.024),and poor collateral circulation(OR=0.037,95％CI:0.007-0.196,P=0.000)were independent risk factors for poor prognosis in LVO-AIS patients after intravascular treatment.Conclusion For the LVO-AIS patients,those with advanced age,di-abetes,symptomatic intracranial hemorrhage and poor collateral circulation are prone to poor prognosis after intravascular treatment.
摘要
Objective:To investigate the predictive value of preoperative D-dimer level for futile recanalization (FR) after mechanical thrombectomy (MT) in patients with acute ischemic stroke (AIS).Methods:It was a nested case-control study. A total of 116 patients with large vessel occlusion (LVO) stroke, who underwent successful recanalization (modified Thrombolysis in Cerebral Infarction, mTICI≥2b) after MT at the Stroke Unit of Beijing Hospital from August 2018 to January 2022,were consecutively enrolled, including 72 males (62.1%) with the age of (72.8±13.1) years. According to the 3-month modified Rankin Scale (mRS) score after MT, patients were divided into the meaningful recanalization group (mRS 0-2, n=41) and the futile recanalization group (mRS 3-6, n=75). The baseline clinical data of enrolled patients was collected. Logistic regression analysis was used to identify the independent risk factors for FR after MT in patients with AIS. Receiver operating characteristic (ROC) curve was used to evaluate the predictive value of D-dimer for FR. Results:Multivariate logistic regression analysis showed that high baseline systolic blood pressure (SBP) ( OR=1.038, 95% CI: 1.012-1.065, P=0.004), baseline National Institutes of Health Stroke Scale (NIHSS) score≥12 ( OR=10.157, 95% CI: 3.624-28.470, P<0.001) and high preoperative D-dimer level ( OR=4.536, 95% CI: 1.379-14.922, P=0.013) were independent predictors of FR after MT in AIS patients with LVO. ROC curve analysis indicated a good predictive value of preoperative D-dimer for the occurrence of FR ( AUC=0.733, 95% CI: 0.638-0.829, P<0.05), the optimal cut-off value of D-dimer was 2.65 μg/L(Lg), with the Youden index, sensitivity, specificity and accuracy of 0.435, 53.3%, 90.2% and 66.4%, respectively. Conclusion:High preoperative D-dimer level is an independent predictor of futile recanalization after MT in AIS patients with LVO, which shows good predictive ability for futile recanalization.
摘要
Retinal vein occlusion(RVO)is the second most common cause of vision loss due to retinal vascular disease. Macular edema(ME)is a common complication of RVO and a major cause of central vision impairment. Optical coherence tomography(OCT)is a high-resolution imaging technique that can provide detailed cross-sectional images of the retina and choroid. OCT biomarkers play an important role in the early and accurate diagnosis of RVO-ME, prediction of disease progression, and assessment of visual prognosis. This article provides an overview of various OCT biomarkers for RVO-ME, including retinal thickness, disorganization of retinal inner layers, hyper-reflectivity of retinal inner layer, the integrity of external limiting membrane and ellipsoid zone, the third highest reflectance band of the fovea, hyperreflective dots, paracentral acute middle maculopathy, prominent middle limiting membrane sign, serous retinal detachment height, macular volume and choroidal thickness. These biomarkers serve as objective indicators for evaluating the severity of RVO-ME, guiding treatment decisions, and predicting visual outcomes.