Objective To detect the effects of cytokines on the expression of early growth response gene-1 (Egr-1) in cultured human retinal pigment epithelial (RPE) cells. Methods Immunofluorescence staining, Western blotting and reverse transcription polymerase chain reaction (RT-PCR) were used to detect and quantitatively analyze the expression of Egr-1 protein and mRNA in cultured human RPE cells which were exposed to stimulants, including 20 mu;g/ml lipopolysaccharide (LPS), 40 ng/ml tumor necrosis factor (TNF)-alpha;, 10 U/ml interferon (IFN)gamma;, 30% supernatant of monocyte/macrophage strain (THP1 cells) and the vitreous humor from healthy human eyeballs, for 0, 10, 20, 30, 40 and 60 minutes, respectively. Results The RPE cells stimulated for 0 minute revealed faint green fluorescence of Egr-1 in the cytoplasm. With exposure to the stimulants, the expressionof Egr-1 increased obviously and b green fluorescence was found in cytoplasm in some nuclei of RPE cells. Compared with the untreated RPE cells, after stimulated by 20 mu;g/ml LPS, 40 ng/ml TNFalpha;, 10 U/ml IFNgamma;, 30% supernatant of THP-1 cells and the vitreous humor, the approximate ultimate amplitudes of Egr-1 mRNA enhanced 1.9, 1.3, 14, 1.2, and 1.4 times, respectively; the greatest amplitudes of Egr-1 protein increased 3.4, 1.2, 1.7, 32, and 1.3 times, respectively. Conclusion LPS, TNF-alpha;, IFN-gamma;, supernatant of THP-1 cells and the vitreous humor can upregulate the expression of Egr-1 mRNA and protein in cultured human RPE cells, and induce its nuclear transposition, which suggests the activation of Egr-1.
Objective To explore the methods of early diagnosis of arteriosclerosis obliterans of lower extremity (ASOLE). Methods The related literatures on ASOLE detection means adopted clinically were reviewed, and their advantages and disadvantages were compared.Results Asymptomatic ASOLE could be discovered by determination of ankle brachial index (ABI) and toe brachial index (TBI), which was a good index for arterial function assessment of lower extremity. Pulse wave velocity (PWV) was more vulnerable and less sensitive than ABI, and therefore more suitable for screening of a large sample. ASI was an index to assess arterial structure and function, and it had a good correlation with PWV. Flow-mediated dilation (FMD) was a measurement evaluating the function of endothelial cell; Pulse wave measurement was simple, sensitive, and its result was reliable. Color Doppler ultrasonography could localizate the lesion and determine the degree of stenosis at the same time. Multiple-slice CT angiography (MSCTA) was more accurate than color Doppler ultrasonography, but its inherent shortcomings, such as nephrotoxicity of contrast agent, was still need to be resolved. 3D-contrast enhancement magnetic resonance angiography (CEMRA) had little nephrotoxicity, but a combination of other imaging methods was necessary. Microcirculation detections required high consistency of the measurement environment, but they were simple, sensitive and noninvasive, and therefore could be used for screening of ASO. Conclusion Publicity and education of highrisk groups, and reasonable selection of all kinds of detection means, are helpful to improve the early diagnosis of ASOLE.
【Abstract】Objective To investigate the recent studies on the biocharacters of keratin family (e.g. genetic mutations and abnormal expressions) and their relationships with the malignant tumors. Methods The literatures of recent years on the biocharacters of keratin family (e.g. genetic mutations and abnormal expressions) and their relationships with the malignant tumors were reviewed. Results Keratin family is a kind of structural proteins in cell which plays an important role in cytomechanics and regulates cell-cycle. The mutations of keratin genes (mRNA) or the overexpression of keratin proteins would interfere with the order of cell-cycle or the integrity of cytomechanics, and lead to some diseases and malignant tumors finally. Conclusion The studies on biocharaters of keratin family (e.g. genetic mutations and abnormal expressions) are helpful in the diagnosis, staging and the evaluation of prognosis of some diseases and cancers, e.g. liver cirrhosis, breast cancer, rectum carcinoma, etc.
Recent research data showed the concept that "surgery is still the main treatment for early non-small cell lung cancer (NSCLC)" now has new connotation: (1) Pure ground glass nodule (GGO) like lung adenocarcinoma should be regarded as a new clinical issue compared to solid tumors to avoid over-treatment. (2) The deep meaning of multidisciplinary pathological classification of lung adenocarcinoma should be fully understood to avoid over-diagnosis. (3) The T staging of lung adenocarcinoma mixed with GGO components should be correctly understood to avoid over-staging. (4) We should carefully understand the new data of relationship between lung resection extent and prognosis to avoid excessive resection. (5) Attention should be paid to the research progress of minimal residual disease (MRD) to avoid possible insufficient treatment.
ObjectiveTo systematically review the incidence and influencing factors of early enteral nutritional feeding interruptions in critically ill patients. MethodsThe PubMed, Web of Science, Embase, Cochrane Library, CNKI, WanFang Data and CBM databases were electronically searched to collect observational studies on the early enteral nutritional feeding interruptions in critically ill patients from inception to January 2, 2024. Two reviewers independently screened literature, extracted data and assessed the risk of bias of the included studies. Meta-analysis was then performed by using Stata 17.0 software. ResultsA total of 12 studies including 1 121 patients were included. Meta-analysis showed that the incidence of early enteral nutritional feeding interruptions in critically ill patients was 75.0% (95%CI 64.0% to 84.0%). Influenced by feeding intolerance, airway management, tube problems, radiological examination, and endoscopy, surgery and so on, interruptions of early enteral nutritional feeding frequently occur in critically ill patients. ConclusionCurrent evidence shows that early enteral feeding interruptions in critically ill patients are affected by many factors, and the incidence is high. Due to the limited quality and quantity of the included studies, more high-quality studies are needed to verify the above conclusion.
Objective To evaluate the diagnostic efficiency of serum soluble CD26 （sCD26） on the diagnosis of colorectal cancer. Methods The serum sCD26 concentration of 59 colorectal cancer patients, 51 colorectal benign disease patients, and 41 healthy volunteers were detected by ELISA. The diagnostic efficiency of sCD26 and carcinoma embryonic antigen （CEA） was assessed by receiver operating characteristics （ROC） analysis. The association between sCD26 and colorectal cancer was assessed by logistic regression which included CEA in the model. Results Increased serum sCD26 was observed in colorectal cancer patients （P＜0.01）, but the differences of sCD26 in different Dukes stages were not statistic significance （P=0.78）. The area under cure （AUC） of sCD26 confirmed by ROC analysis was 0.72 〔95% confidence interval （CI）：0.63-0.82, P＜0.01〕. The diagnostic sensitivity and specificity for sCD26 at 526 μg/L, the optimal diagnostic threshold, were 0.59 （95% CI： 0.48-0.72） and 0.80 （95% CI： 0.67-0.90）, respectively. Positive serum sCD26 was associated with colorectal cancer after adjusted for CEA with odds ration （OR） 5.17 （95% CI：1.72-15.53, P＜0.01）, as confirmed by logistic regression. Increased positive rate of serum sCD26 was observed in patients at Dukes A stage （P=0.03）, but not Dukes B, C, and D stage （P＜0.05）. Conclusions Serum sCD26 has high diagnostic performance for colorectal cancer. The association of sCD26 is independent of serum CEA. Compared to serum CEA, sCD26 has more potential to be an early biomarker for colorectal cancer diagnosis.
ObjectiveTo compare the clinical effects of early dynamic brace passive activity program and average delay activity program after the repair of extensor tendon. MethodsSeventy-eight patients undergoing repair of the extensor tendon during the period from December 2008 to October 2011 in our hospital were randomly divided into two groups.The treatment group had 36 patients who were treated with early dynamic brace passive activity program,and the other 42 patients belonged to the control group and they accepted delay activity program.TAM and FIM were used to evaluate their clinical effects six and eight weeks after surgery,respectively. ResultsThe results of TAM and FIM of the treatment group were significantly better than those of the control group (P<0.01). ConclusionThe early dynamic brace passive activity after extensor tendon injury repair can improve the clinical effect and is worth popularizing.
Objective To study the relation between changes of the hepatic energy metabolism and allograft viability in early phase after orthotopic liver transplantation, arterial blood ketone body ratio (AKBR) was measured in pre- intra and post-operative phase. Methods The monkeys were divided into two groups in accordance with survived times. A group (＞24h), 5 monkeys survived 29—168 postoperative hours; B group (＜24h), 9 monkeys survived only 5—22 hours. Results AKBR in all models immediately decreased to extraordinarily low state in anhepatic-phase (versus preanhepatic phase, Ｐ＜0.01), and A group recovered rapidly to the normal levels, and maintained continuously for 12 postoperative hours above the level of 0.7. In contrast in B group, AKBR decreased below 0.7 rapidly and failed to restore to the normal level. Within 12 hours postoperatively, in B group, AKBR was lower than 0.4. Conclusion AKBR is a sensitve indicator to the allograft viability in the early phase after hepatic transplantation.
【Abstract】 Objective To investigate the protective effect of early motion on articular cartilage after joint allograft by performing a controlled trial between different post-operation strategies after joint allograft in an animal model. Methods Twenty hemi-knee joints were harvested from 10 6-month-old New Zealand white rabbits (male or female, weighing 2.5-3.0 kg); 10 hemi-knee joints by deep frozen treatment (donors) were transplanted to unilateral knee joints (recipients) of 10 6-month-old Chinchilla rabbits (male or female, weighing 2.5-3.0 kg), which were divided into early motion group (n=5) and sustained fixation group (n=5); and 10 hemi-knee joints were used as blank control (n=5) and frozen control (n=5). The articular cartilage of allogenic joints was detected by X-ray film, gross, and histology at 6 weeks after operation. Results Gross observation: no obvious limitation of joint movements was observed in early motion group, but obvious limitation in sustained fixation group. X-ray films: the bone ends between donor and recipient healed well with good paraposition and alignment on the operation day and 2 weeks after operation; at 6 weeks, angulation deformity was observed in early motion group of 3 rabbits, and paraposition and alignment were satisfactory in sustained fixation group. Histological observation: HE staining showed that the chondrocytes had normal quantity and morphology with few nuclear fragmentation and karyolysis in early motion group, but the quantity of chondrocytes sharply decreased with dissolved nuclei and numerous fibrous tissues in the cartilage matrix in sustained fixation group. The cell survival rate of the early motion group (49.66% ± 2.15%) was significantly higher than that of the sustained fixation group (20.68% ± 1.24%) (P lt; 0.05). Scanning electron microscopy observation: nuclear membrane was intact with chromatin condensation and edema of mitochondria and rough surfaced endoplasmic reticulum in early motion group, and that the membrane of chondrocyte vanished with blurring border between chondrocyte and matrix, rupture of nuclear membrane and the disappearance of chromatin and organelles could be found in sustained fixation group. Conclusion Early motion has protective effect on articular cartilage after joint allograft, but cannot completely prevent degeneration of the allogenic articular cartilage.
ObjectiveTo study the early out-of-bed activities of patients after Mako robotic-assisted total hip arthroplasty.MethodsWe prospectively included inpatients planned to undergo primary unilateral total hip arthroplasty in the Department of Orthopaedics of the First Affiliated Hospital of Chongqing Medical University from April to July 2020. Using a randomized numerical table, the patients were divided into trial group to undergo robotic-assisted total hip arthroplasty and control group to undergo traditional total hip arthroplasty, and both groups received the same nursing measures and instructions for training to get out of bed after surgery. Postoperative active pain (assessed with Visual Analogue Scale), the proportion of patients willing to get out of bed within 24 h after surgery, the time and duration for the first out of bed activity, the proportion of patients with a walking distance ≥5 m for first activity, and the level of activity in the first 3 d after surgery between the two groups were compared.ResultsA total of 38 patients were included in this study, with 17 patients in the trial group and 21 patients in the control group. There was no statistical significance in the baseline demographics between the two groups (P>0.05). There were statistically significant differences in postoperative 6-hour and 24-hour Visual Analogue Scale scores between the two groups (P<0.05). Two hours after oral administration of perioperative energy preparations on the day of surgery, the proportion of patients who were willing to get out of bed early in the trial group was higher than that in the control group (100.0% vs. 57.1%, P<0.05). The first time to get out of bed ［(4.39±0.17) vs. (8.74±4.70) h］, the duration of getting out of bed ［(10.89±3.60) vs. (8.37±3.31) h］, and the proportion of patients with a walking distance ≥5 m for first activity (94.1% vs. 61.9%) were better than those of the control group (P<0.05). There were statistically significant differences between the trial group and the control group in the average level in the first 3 days after surgery, postoperative first-day level, and postoperative second-day level of getting out of bed (P<0.05). There were no falls, dislocation of the prosthesis, fractures around the prosthesis, or deep vein thrombosis in the two groups of patients during their hospitalization.ConclusionThe precise surgery method with the help of Mako orthopedic robot-assisted system can help promote patients to get out of bed early after surgery, and can providea reference for how to improve the rehabilitation of patients after traditional total hip replacement in the future.