RESUMO
Objective:To explore the perinatal characteristics and early postnatal circulatory function of the larger fetus in monochorionic diamniotic twin pregnancy complicated with selective intrauterine growth restriction (sIUGR).Methods:From February 2018 to August 2022, a total of 91 larger fetuses of the sIUGR pregnancies who were hospitalized in the neonatal intensive care unit of Peking University Third Hospital were retrospectively included. The perinatal factors, clinical monitoring indicators, and echocardiographic data of the larger twins in pregnancies with three types of sIUGR were compared using one-way analysis of variance and LSD test, Kruskal-Wallis H test, Chi-square test, and Bonferroni correction. Results:The gestational age, birth weight, and placental weight were (30.6±1.5) weeks, (1 503.9±286.4) g, and (548±120) g in the type Ⅱ sIUGR larger twins and were (30.5±2.3) weeks, (1 523.5±424.4) g, and (560±109) g in type Ⅲ, which were all smaller, lower, and lighter than those in the type Ⅰ[(33.0±1.7) weeks, (2 022.1±372.3) g, and (630±131) g, respectively] (LSD test, all P<0.05). Compared with type Ⅰ sIUGR larger twins, type Ⅱ and Ⅲ sIUGR larger twins had longer hospital stay [36.0 d (27.0-43.0 d) and 32.0 d (15.0-47.0 d) vs. 17.0 d (9.5-22.0 d)], higher proportion of preterm births due to fetal distress [63.6% (21/33) and 75.0% (15/20) vs. 31.6% (12/38), χ2=7.30 and 9.93] (Bonferroni correction, all P<0.017); Compared with type Ⅰ sIUGR larger twins, type Ⅱ sIUGR larger twins had higher proportion of postnatal use of vasoactive drugs [45.5% (15/33) vs. 18.4% (7/38), χ2=6.04, P=0.014]. The interventricular septum thickness was larger in the type Ⅲ sIUGR larger twins than those in the type Ⅰ and Ⅱ twins [(4.4±1.4) vs. (3.8±0.9) and (3.3±0.9) mm]; the thickness of left ventricular free wall was the largest in the type Ⅲ larger twins, followed by those in the type Ⅰ and type Ⅱ [(4.6±1.3) vs. (3.1±0.7) vs. (2.7±0.6) mm]; the left ventricular end-diastolic diameter, right ventricular outflow tract diameter, right ventricular anteroposterior diameter, and pulmonary artery diameter in type Ⅰ larger twins were increased comparing with those in type Ⅱ and Ⅲ [left ventricular end-diastolic diameter: (15.0±2.1) vs. (13.4±2.3) and (12.3±3.2) mm; right ventricular outflow tract diameter: (8.7±1.4) vs. (7.3±1.4) and (7.1±0.8) mm; right ventricular anteroposterior diameter: (7.1±1.5) vs. (6.5±0.9) and (6.4±1.0) mm; pulmonary artery diameter: (6.8±1.1) vs. (6.3±0.9) and (6.3±0.8) mm] (LSD test, all P<0.05). Conclusion:The larger fetuses of type Ⅱ and Ⅲ sIUGR pregnancies had smaller gestational age and lighter birth weight who are more prone to have fetal distress, so it is necessary to strengthen dynamic monitoring and circulatory support for such neonates during the perinatal period and early postnatal period. The thickening of the left ventricular wall and interventricular septum in the early postnatal period of type Ⅲ larger fetuses may lead to the decrease of ventricular diastolic function reserve, thereby the evaluation and monitoring of the myocardial diastolic function of these neonates in the early postnatal period are critical.
RESUMO
Objective:To investigate the changes and clinical significance of multiple cytokine levels in exhaled breath condensate (EBC) in patients undergoing tracheotomy with severe inhalation injury.Methods:A prospective study was conducted. A total of 32 patients with severe burn combined with severe inhalation injury admitted to the department of burns and plastic surgery of Affiliated Suzhou Hospital of Nanjing Medical University from May 2021 to August 2022 were enrolled. Twenty healthy volunteers from the same period were served as controls. EBC of patients at 12 hours after burn and the samples of healthy controls were collected. The levels of 27 cytokines in EBC, including tumor necrosis factor-α (TNF-α) and interleukins (IL-1β, IL-6, IL-8, IL-10, and IL-17), were determined by liquid phase chip technology. Meanwhile, plasma of patients at 12 hours after burn and the plasma of volunteers were collected, and the levels of inflammatory cytokines were detected by liquid chip technology, and the differences between the levels in plasma and those in EBC were analyzed. Plasma and EBC of patients with aspiration injury were collected at 12 hours and 3, 7, 14 and 21 days after burn, and TNF-α levels were determined by enzyme-linked immunosorbent assay (ELISA).Results:Finally, 32 patients were enrolled, and the total burned area was (40±16)% of total body surface area (TBSA). The time of admission was (4.2±2.3) hours after injury. ① Twenty-seven cytokines in EBC: 18 kinds of cytokines including macrophage inflammatory protein-1β (MIP-1β), IL-6, IL-5, IL-2, IL-1β, IL-8, IL-10, IL-15, IL-9, interferon-γ (IFN-γ), IL-1 receptor antagonist (IL-1ra), TNF-α, chemotactic factor for eosinophil (Eotaxin), basic fibroblast growth factor (bFGF), platelet derived growth factor-BB (PDGF-BB), interferon-inducible protein-10 (IP-10), monocyte chemoattractant protein-1 (MCP-1), granulocyte colony-stimulating factor (G-CSF) were significantly increased in patients with severe aspiration injury compared with health controls. Eotaxin was not detected in EBC of healthy controls. Five cytokines, granulocyte-macrophage colony-stimulating factor (GM-CSF), chemokine ligand 5 (CCL5/RANTES), IL-13, IL-4 and MIP-1α, were not detected in EBC of severe inhalation injury patients and healthy controls. Vascular endothelial growth factor (VEGF) and IL-12 p70 in EBC of severe aspiration injury patients were slightly decreased as compared with healthy controls, while IL-7 and IL-17 were slightly increased, but the differences were not statistically significant. ② Six inflammatory cytokines in plasma: the levels of IL-6 and IL-8 in the severe aspiration injury group were significantly increased as compared with healthy controls [IL-6 (ng/L): 18.51 (10.87, 26.21) vs. 0.22 (0.10, 0.36), IL-8 (ng/L): 10.75 (8.58, 18.79) vs. 1.06 (0.81, 2.14), both P < 0.01]. The plasma levels of TNF-α, IL-1β and IL-10 were slightly increased in patients with severe aspiration injury as compared with healthy controls, and IL-17 was slightly decreased, but the difference was not statistically significant. In the EBC collected during the same period, five inflammatory cytokines, including TNF-α, IL-1β, IL-6, IL-8 and IL-10, in patients with severe inhalation injury were significantly increased as compared with healthy controls [TNF-α (ng/L): 16.42 (12.57, 19.21) vs. 7.34 (6.11, 8.69), IL-1β (ng/L): 15.57 (10.53, 20.25) vs. 0.99 (0.67, 1.41), IL-6 (ng/L): 13.36 (9.76, 16.54) vs. 0.70 (0.42, 0.85), IL-8 (ng/L): 1 059.29 (906.91, 1 462.37) vs. 10.36 (8.40, 12.37), IL-10 (ng/L): 2.69 (1.54, 3.33) vs. 1.54 (1.18, 2.06), all P < 0.05]. ③ Dynamic changes of TNF-α in plasma and EBC: the level of TNF-α in EBC of patients with severe aspiration injury was lower than that in plasma. Plasma TNF-α level was increased gradually with the extension of time after injury, and was significantly higher than that of healthy controls on day 3 [ng/L: 30.38 (24.32, 39.19) vs. 22.94 (17.15, 30.74), P < 0.05], and reached the peak on day 14, then fell back. The level of TNF-α in EBC at 12 hours after injury was significantly higher than that in healthy controls [ng/L: 15.34 (11.75, 18.14) vs. 6.99 (6.53, 7.84), P < 0.01], and reached the peak on 3 days after injury, and then gradually decreased. Conclusion:There are changes in the expression of multiple cytokines in EBC of patients with severe inhalation injury, and the changes of many inflammatory cytokines including TNF-α are more sensitive than those in plasma, which can be used to monitor and evaluate the condition of patients with inhalation injury.
RESUMO
The serious decrease in the number of functional β cells is one of the main features in the pathogenesis of diabetes mellitus. CDKN1B is a new kind of regulatory protein, which can bind and inactivate cyclin and cyclin-dependent kinase complex to control the process of cell cycle. It was suggested that down-regulation or deletion of CDKN1B in islet β cells could accelerate the proliferation of islet β cells, thus increasing the number of islet β cells, which is of great significance for treatments of diabetes.
RESUMO
For patients with partial jaw defects, cysts and dental implants, doctors need to take panoramic X-ray films or manually draw dental arch lines to generate Panorama images in order to observe their complete dentition information during oral diagnosis. In order to solve the problems of additional burden for patients to take panoramic X-ray films and time-consuming issue for doctors to manually segment dental arch lines, this paper proposes an automatic panorama reconstruction method based on cone beam computerized tomography (CBCT). The V-network (VNet) is used to pre-segment the teeth and the background to generate the corresponding binary image, and then the Bezier curve is used to define the best dental arch curve to generate the oral panorama. In addition, this research also addressed the issues of mistakenly recognizing the teeth and jaws as dental arches, incomplete coverage of the dental arch area by the generated dental arch lines, and low robustness, providing intelligent methods for dental diagnosis and improve the work efficiency of doctors.
Assuntos
Humanos , Radiografia Panorâmica/métodos , Tomografia Computadorizada de Feixe Cônico/métodos , Cabeça , Processamento de Imagem Assistida por Computador/métodosRESUMO
Soft tissue defects resulting from head and neck tumor resection seriously impact the physical appearance and psychological well-being of patients. The complex curvature of the human head and neck poses a formidable challenge for maxillofacial surgeons to achieve precise aesthetic and functional restoration after surgery. To this end, a normal head and neck volunteer was selected as the subject of investigation. Employing Gaussian curvature analysis, combined with mechanical constraints and principal curvature analysis methods of soft tissue clinical treatment, a precise developable/non-developable area partition map of the head and neck surface was obtained, and a non-developable surface was constructed. Subsequently, a digital design method was proposed for the repair of head and neck soft tissue defects, and an in vitro simulated surgery experiment was conducted. Clinical verification was performed on a patient with tonsil tumor, and the results demonstrated that digital technology-designed flaps improved the accuracy and aesthetic outcome of head and neck soft tissue defect repair surgery. This study validates the feasibility of digital precision repair technology for soft tissue defects after head and neck tumor resection, which effectively assists surgeons in achieving precise flap transplantation reconstruction and improves patients' postoperative satisfaction.
Assuntos
Humanos , Procedimentos de Cirurgia Plástica , Retalhos Cirúrgicos/cirurgia , Neoplasias de Cabeça e Pescoço/cirurgia , Cabeça/cirurgia , Pescoço/cirurgiaRESUMO
Hyponatremia is common in the attack of acute intermittent porphyria(AIP), which can cause epilepsy, coma and other adverse events and endanger the life of patients. Carbohydrate loading therapy is applied to control the attack of AIP in the clinic. But the application of glucose can exacerbate hyponatremia. It is difficult for clinicians to effectively correct hyponatremia while treating AIP with glucose. We reported a case of AIP whose refractory hyponatremia was corrected with short-term low-dose tolvaptan to improve knowledge in management.
RESUMO
Objective:To investigate the multilocus sequence typing feature of the virulence-associated genes of Staphylococcus aureus(S. aureus) separated from the clinical specimens of a multi-center cohort children in Guangzhou area. Methods:A total number of 412 Staphylococcus aureus strains isolated from 2 059 non-repeated fecal specimens of children by three groups′ researchers in Guangzhou Women and Children′s Medical Center from August 2018 to November 2018. While collecting specimens, patient clinical information is also properly collected and preserved. After extracting the DNA of the strain, the virulence-associated genes were detected by polymerase chain reaction (PCR), including the staphylococcal enterotoxin (SE) genes ( sea, seb, sec, sed, see) and the Panton-Valentine leucocidin-encoding gene ( pvl).The multi-locus sequence typing (MLST) method was performed to reveal the MLST feature of these genes and the statistical difference were examined by the the χ 2 test. Results:Among the 412 isolates of S. aureus, 256 strains (256/412, 62.1%) contains at least one SE gene. Among the enterotoxin gens, the sec (125/412, 30.3%), seb(98/412, 23.8%)and sea (66/412, 16.0%)genes were the three most prevalent members of SEs. The frequency of pvl gene in Staphylococcus aureus was 18.7%(77/412).Among them, the frequency of Staphylococcus aureus sea gene isolated from patients with gastroenteritis (58/319, 18.2%) was significantly higher than that from the non-gastroenteritis group (8/93, 8.6%)(χ2=4.912, P=0.027). The frequency of Staphylococcus aureus pvl gene isolated from the patients with pneumonia (8/21, 38.1%) was greater than that from the non-pneumonia group (6/47, 12.8%)(χ2=4.252, P=0.039). In addition, the virulence-associated gene of S. aureus was closely related to the specific ST type, 82.4% (28/34) of ST6 carried sea gene, all ST338 and ST59 carried seb gene, 96% (48/50) ST45 carried sec gene, and the pvl gene carrying rate of ST338 was 5/5. Conclusions:The SEA toxin produced by ST6 Staphylococcus aureus may be closely related to the diagnosis of gastroenteritis in children. The frequency of pvl virulence gene in Staphylococcus aureus in children with community-acquired pneumonia was higher than that in the non-pneumonia group, and closely related to the CC59.
RESUMO
Consensus and guidelines regarding point-of-care ultrasound (POCUS) carried out by neonatologists in neonatal intensive care unit (NICU) have been published in many countries. This review summarizes the development, advantages, limitations, and current issues of POCUS in NICU, aiming to promote the establishment of systematic training courses, accelerate the development of POCUS in NICU in China, and ensure the effectiveness and safety of POCUS implementation.
RESUMO
Objective:To summarize the etiology, laboratory examinations and clinical features of rhabdomyolysis(RM)in children.Methods:The clinical data of children with RM admitted to the pediatric general ward at Third Hospital of Peking University from January 1st, 2010 to March 31st, 2021 were collected.The clinical characteristics, etiology distribution, laboratory examinations, treatments and prognosis of the children were analyzed.Results:A total of 24 children were included with 16 males and 8 females.The age ranged from 4 to 15 years old, with median age was 13years old.The etiology was exertional diseases in 14 cases(58.3%), non-exertional diseases in ten cases (41.7%, 7 cases of infection and 3 cases of other causes). The average age of exertional RM was(13.50±1.83)years, and that of non-exertional RM was(8.60±3.72)years.There was significant difference( t=3.848, P=0.002). The main clinical symptoms were muscle soreness, abnormal urine color and muscle weakness.Serum creatine kinase(CK)and serum myoglobin were significantly increased.The proportion of CK value moderate to severe increased of exercise RM children was significantly higher than that of non-exertional RM children( P=0.009). All children were treated with hydration and alkalization.Except for one case who died of critical primary disease, the other 23 children had good treatment response, and no rhabdomyolysis was found during the follow-up. Conclusion:The main causes of rhabdomyolysis in children are exercise and infection.Exertional RM is common in elder children.The increasing of CK level caused by exertional RM is more obvious.Active hydration and alkalization measures could avoid the occurrence of acute kidney injury.Most children with RM have good prognosis.
RESUMO
In the study of oral orthodontics, the dental tissue models play an important role in finite element analysis results. Currently, the commonly used alveolar bone models mainly have two kinds: the uniform and the non-uniform models. The material of the uniform model was defined with the whole alveolar bone, and each mesh element has a uniform mechanical property. While the material of the elements in non-uniform model was differently determined by the Hounsfield unit (HU) value of computed tomography (CT) images where the element was located. To investigate the effects of different alveolar bone models on the biomechanical responses of periodontal ligament (PDL), a clinical patient was chosen as the research object, his mandibular canine, PDL and two kinds of alveolar bone models were constructed, and intrusive force of 1 N and moment of 2 Nmm were exerted on the canine along its root direction, respectively, which were used to analyze the hydrostatic stress and the maximal logarithmic principal strain of PDL under different loads. Research results indicated that the mechanical responses of PDL had been affected by alveolar bone models, no matter the canine translation or rotation. Compared to the uniform model, if the alveolar bone was defined as the non-uniform model, the maximal stress and strain of PDL were decreased by 13.13% and 35.57%, respectively, when the canine translation along its root direction; while the maximal stress and strain of PDL were decreased by 19.55% and 35.64%, respectively, when the canine rotation along its root direction. The uniform alveolar bone model will induce orthodontists to choose a smaller orthodontic force. The non-uniform alveolar bone model can better reflect the differences of bone characteristics in the real alveolar bone, and more conducive to obtain accurate analysis results.
Assuntos
Humanos , Fenômenos Biomecânicos , Simulação por Computador , Análise de Elementos Finitos , Modelos Biológicos , Ligamento Periodontal , Estresse Mecânico , Técnicas de Movimentação DentáriaRESUMO
Objective:To summarize the clinical features and risk factors of periventricular venous cerebral infarction (PVI) in premature infants to prompt an early diagnosis.Methods:Clinical data of 16 premature newborns diagnosed with PVI by ultrasound in the Department of Pediatrics of Peking University Third Hospital from January 1, 2013, to December 31, 2018, were retrospectively collected. The clinical manifestations, ultrasound findings, risk factors and outcomes were analyzed. Two allocations were performed to the patients: mild PVI group ( n=5) or severe PVI group ( n=11) according to the degree of brain injury suggested by ultrasound findings; and typical PVI group (onset time was 6-96 h after birth; n=14) or atypical PVI group (onset time was less than 6 h or more than 96 h after birth; n=2) according to the onset time. Chi-square or Fisher's exact test was used to analyze the differences in high risk factors and prognosis between the groups. Univariate and multivariate logistic regression analysis were used to analyze the high risk factors related to different groups. Correlations of the severity of brain injury and the onset time with PVI prognosis were analyzed using univariate analysis. Results:(1) The gestational age of the 16 infants with PVI was 25 +2-33 +1 weeks (median 27 weeks). The birth weight ranged from 660 g to 1 760 g (median 1 065 g). All cases showed PVI under ultrasongraphy one week after birth, among which 11 was diagnosed and the other five were misdiagnosed as periventricular intraventricular hemorrhage Grade Ⅲ. Five cases presented with convulsion, while the others did not show any specific symptoms. All cases were shown periventricular intraventricular hemorrhage GradeⅢ or above. Bilateral hemispheres were involved in seven cases, left hemisphere in five and right in four. There were 15 cases with massive infarction and six with midline displacement. Obstructive hydrocephalus occurred in six cases 4-25 d after birth, and eight patients had brain parenchyma softening 5-25 d after birth. (2) The incidence of asphyxia in the mild PVI group was lower than that in the severe PVI group (1/5 vs 10/11, P=0.013) and asphyxia was a high risk factor of severe PVI ( OR=40.000, 95% CI: 1.982-807.100). (3) There was no significant difference in the clinical risk factors between the typical and atypical PVI groups (all P>0.05). (4) Among the 16 cases, nine died, one was lost to follow-up, five had delayed intelligence and motor development and one had normal growth and development. No significant difference in the prognosis (died or discharged after improvement) was found between the mild and severe PVI groups, or between the typical and atypical PVI groups ( P=0.365 or 0.700). Conclusions:PVI usually occurs in very or extremely low birth weight premature infants within one week after birth. Clinical manifestations of PVI include convulsions, but most are non-specific. Asphyxia may lead to severe PVI. PVI has a higher short-term mortality as well as a higher incidence of long-term neurological sequelae.
RESUMO
Objective To realize the extra-oral measurement of initial recovery force produced by orthodontic wire using simulated dental model. Methods A clinical patient was selected as the study objective, and maxillary dental models, which were in accordance with the real dentition of patient, were fabricated by three-dimensional printing. An orthodontic force measuring system was constructed using Nano17 F/T mechanical sensors to measure the initial recovery forces on two maxillary central incisors, which were produced by a standard circle Ni-Ti wire with the diameter of 355.6 μm after the archwire was assembled on the dental model. Results Central incisor 21 suffered a lager initial orthodontic force compared with incisor 11, and the force systems on two incisors were both adverse to tooth ideal movement, therefore, an assistive device was necessary to improve force status of the teeth. When the orthodontic treatment plan was optimized, a satisfactory result was obtained after 18 months of treatment. Conclusions Force systems caused by orthodontic wire and exerted on the teeth could be accurately measured using the simulated dental model of patient, so as to predict the teeth moving type, and improve teeth treatment plan on this basis. The extra-oral measuring technique of orthodontic force provides an important reference for clinical orthodontic treatment, and creates a novel idea for the optimal design of orthodontic plan.
RESUMO
We described an elderly female with type 2 diabetes referred to our hospital with fever,nausea and upper abdominal pain.The patient had got duodenal tumor and received the pancreaticoduodenectomy (PD) 12 years ago.The laboratory examinations revealed white blood cells (WBC) increasing and severe hypocalcemia.Abdominal computed tomography (CT) revealed a huge gas-forming pyogenic liver abscess (PLA) in left lobe of the liver.The patient got cured after correction of calcium metabolism disorders,treatment with antibiotic and receiving percutaneous tube drainage.We concluded that we should remain on high alert of those patients with DM and the history of cancer,when he or she gets fever of unknown origin and abdominal tenderness.PLA should be considered.
RESUMO
This is a case report of preterm female neonate with Raynaud's phenomenon, who was born at 30+3 weeks of gestation. Her right upper limb completely turned pale from wrist to fingers with undetermined cause five days after birth, with weakened radial artery pulsation and lower skin temperature than the other side. After several treatment steps including right upper limb massage, keeping warm, intravenous infusion of Alprostadil and application of tropical mucopolysaccharide polysulfate cream, the affected limb gradually turned to purple and then ruddy. No abnormality was detected in the examinations for secondary Raynaud's phenomenon, therefore a primary Raynaud's phenomenon was considered. No similar symptoms recurred during hospitalization or follow-ups. Though rare, Raynaud's phenomenon should be considered if patients' hands suddenly turn to pale and then purple. The main treatments involve removing the causative factors, keeping warm and massage of the affected limb. Medications can be used to improve peripheral circulation if necessary. Long-term follow-up is needed for neonates suffered from Raynaud's phenomenon.
RESUMO
This is a case report of preterm female neonate with Raynaud's phenomenon, who was born at 30+3 weeks of gestation. Her right upper limb completely turned pale from wrist to fingers with undetermined cause five days after birth, with weakened radial artery pulsation and lower skin temperature than the other side. After several treatment steps including right upper limb massage, keeping warm, intravenous infusion of Alprostadil and application of tropical mucopolysaccharide polysulfate cream, the affected limb gradually turned to purple and then ruddy. No abnormality was detected in the examinations for secondary Raynaud's phenomenon, therefore a primary Raynaud's phenomenon was considered. No similar symptoms recurred during hospitalization or follow-ups. Though rare, Raynaud's phenomenon should be considered if patients' hands suddenly turn to pale and then purple. The main treatments involve removing the causative factors, keeping warm and massage of the affected limb. Medications can be used to improve peripheral circulation if necessary. Long-term follow-up is needed for neonates suffered from Raynaud's phenomenon.
RESUMO
Objective To observe the inhibition of piperlongumine in vitro on platelet aggregation and blood coagulation tests for children,to provide the experimental basis for clinical medication.Methods Venous blood samples from 30 children were randomly devided into 5 groups,and was centrifuge to separate platelet-rich plasma (PRP).After storing in 37 ℃ thermostat water bath for 5 minutes,the PRP which have been added DMSO as blank group,and added Aspirin (10 μmol/L)as control group,and added PL (20 μmol/L),PL(100 μmol/L),PL(200 μmol/L) as different concentrations of PL groups respectively,were induced by the addition of adenosine diphosphate (10 μmol/L),collagen(2.5 μg/mL) and the arachidonic acid(500 μg/mL).Then the platelet aggregation rate of the PRP from 5 groups could be measured by turbidimetry.Blood plasma isolated from venous blood was divided into 5 groups.In the PL groups,blood plasma were mixed up with PRP concentrations of which were 5,10,20 μmol/L.In the bland group,blood plasma were mixed up with DMSO (1%).In the control group,blood plasma were mixed up with heparin sodium(35 U/mL).After storing in 37 ℃ thermostat water bath for 5 minutes,fibrinogen(FIB),prothrombin time(PT),thrombin time(TT) and activated partial thromboplastin time of different groups were detected.Results Compared to the control group,the groups which were add PL with different concentrations (20,100,200 μmol/L) showed significant inhibition on platelet aggregation induced by AA and collagen(P<0.05).PL with concentrations of 100 μmol/L and 200 μmol/L showed significant inhibition on platelet aggregation induced by ADP(P<0.05).The PT,APTT,TT of blood plasma from children had been significantly prolonged by the intervention of PL 10 μmol/L and PL 20 μmol/L(P<0.05),however,no significant change of FIB was observed.Conclusion There are inhibitory effects of PL on platelet aggregation of blood plasma from children and anticoagulant activity in this study.
RESUMO
To observe the effect of pIgR on Salmonella Enteritidis induced inflammation in jejunum and ileum in Chicken,7 day Hyline chickens were taken orally with Salmonella Enteritidis (SE) and killed after 1 d,3 d,7 d and 14 d.The mRNA expression of Toll-like receptor 4(TLR4),MyD88,TRAF6,NF-κB and pIgR was detected by real-time RT-PCR and pIgR protein level was detected by Western blot.The results showed that TLR4 signaling pathway was activated and mR-NA level of the pIgR in jejunum and ileum was enhanced (P<0.01) and protein level of the pIgR in jejunum and ileum was up-regulated by SE.The study proved that TLR4 signal pathway on mucosal cell surface of jejunum and ileum was activated and expression of pIgR was up-regulated and gut mucosal immunity of chicken was strenghtened.
RESUMO
Aim To investigate the effects of dopamine(DA)on insulin secretion from rat islets and the possible mechanism.Methods Pancreatic islets were obtained from the pancreatic of male SD rats by collagenase P digestion and histopaque-1077 density gradient separation.Insulin secretion experiment was used to observe the change of insulin release after DA treatments.As to study the potential mechanisms of the effects of DA,patch-clamp experiment and calcuim image technique were applied to test the depolarization-evoked Ca2+ currents,action potential duration and intracellular Ca2+ concentration.Results In 2.8 mmol·L-1 glucose,DA had no effect on insulin secretion;in 16.7 mmol·L-1 glucose,dopamine inhibited insulin secretion in a dose-dependent manner.DA inhibited the inward calcium current,shorten the action potential duration,and reduced the intracellular Ca2+ concentration.Conclusion DA inhibits insulin secretion maybe by decreasing the inward calcium current leading to shorten the action potential duration and reduce the intracellular Ca2+ concentration.
RESUMO
Objective To study the clinical value of vaccum sealing drainage in plasma cell mastitis.Methods 59 patients with plasma cell mastitis admitted in our hospital were treated with vaccum sealing drainage (the experimental group) from Jan.2011 to Apr.2014.59 plasma cell mastitis patients were treated with traditional vaseline gauze drainage (the control group).Clinical data like hospitalization length,healing time,healing grade,scar size,dressing change frequency,one year recurrence rate and breast deformity were retrospectively analyzed.Results Patients treated with vaccum sealing drainage had shorter hospitalization length and healing time,lower one year recurrence rate and less breast deformity compared to patients treated with traditional Vaseline gauze drainage (P<0.01),while there was no significant difference in terms of healing grade (P>0.05).Conclusions Vaccum sealing drainage can significantly shorten the hospitalization time and incision healing time,reduce dressing change frequency and one year recurrence rate in patients with plasma cell mastitis.Because of the smaller scar caused by vaccum sealing drainage,the breast deformity is also less.It is of clinical value for plasma cell mastitis.
RESUMO
Objective To investigate whether single nucleotide polymorphisms(SNPs)in the ABCC4(rs7320375,rs7329490,rs7986087),FCGR2A(rs1801274)and BLK(rs2254546)region could be susceptibility locus for Kawasaki disease(KD)in children from southern China.Methods This study was performed as a case-control study.The samples,92 individuals with KD and 194 healthy controls from southern China,were collected at Guangzhou Women and Childrens′Medical Center from October,2013 to November,2015,and the SNPs were genotyped by using the Sequenom MassArray system.The genotype distribution and allele frequency of the SNPs were analyzed using chi-square test and Fisher′s exact test.Results The genotype distribution of FCGR2A(rs1801274)in patients with KD were as follows: GG 4.3%(4/92),AG 33.7%(31/92),AA 62%(57/92),correspondingly in healthy controls were GG 48.5%(94/194),AG 41.2%(80/194),AA 10.3%(20/194)respectively,and a significant difference was found between KD patients and controls(x2=98.17,P=0.000).A allele frequency of FCGR2A(rs1801274)in KD patients(78.8%,145/184)was higher than that in controls(30.9%,x2=0.120,P=0.000).The genotype distribution of BLK(rs2254546)in patients with KD were as follows: GG 67.4%(62/92),AG 28.3%(26/92),AA 4.3%(4/92),correspondingly in healthy controls were GG 52.1%(101/194),AG 43.8%(85/194),AA 4.1%(8/194)respectively,significant differences were found between KD patients and controls(x2=6.47,P=0.039).G allele frequency of BLK(rs2254546)in KD patients(81.5%,150/184)was higher than that in controls(74.0%,287/388,x2=1.553,P=0.047).Conclusions For the children in southern China,FCGR2A SNPs(rs1801274)may be associated with the susceptibility to KD,and the A allele may increase the risk of KD.BLK SNPs(rs2254546)is also found to be associated with the susceptibility to KD,and the G allele may increase the risk of KD.