Clinical evaluation of platelet-rich plasma in the treatment of early and middle stage knee osteoarthritis under 3.0T MRI T2 mapping sequence / 中华外科杂志

Objective: To quantitatively evaluate the clinical effect of platelet-rich plasma(PRP) intra-articular injection for early and middle stage knee osteoarthritis(KOA) treatment by 3.0T MRI T2 mapping sequence. Methods: Clinical data of 26 patients with early or middle stage KOA who received treatment from April to December 2021 at Department of Orthopaedic Surgery,the Second Affiliated Hospital,Zhengzhou University were retrospectively analyzed. In total, 8 patients were male and 18 were female,with age of (66.4±12.0)years(range:51 to 94 years). Four patients were bilateral KOA and 22 patients were unilateral KOA.All patients received PRP intra-articular injection. Patients underwent 3.0T MRI T2 mapping sequence scanning pre-treatment,3-month-after and 6-month-after treatment respectively. Those were used to measure and compare T2 values of medial and lateral femoral articular surface and patellofemoral articular surface. Visual analogue scale(VAS) and Western Ontario and McMaster Osteoarthritis Index (WOMAC) score were recorded and evaluated. The results were analyzed using repeated measure ANOVA followed by Bonferroni multiple comparison test.The correlation between WOMAC scores and T2 values at pre-treatment and 6 months post-treatment was analyzed using Pearson correlation test. Results: After treatment, the patients' International Cartilage Regeneration＆Joint Preservation Society(ICRS) classification were partly improved(one case improved from grade Ⅲ to grade Ⅱ, one case improved from grade Ⅱ to grade Ⅰ),and all patients generally improved after treatment in clinical symptoms. Compared with pre-treatment,VAS and WOMAC scores of grade Ⅰ,Ⅱ,and Ⅲ of 6-month after treatment were declined significantly(all P<0.05).The T2 values of articular cartilage declined to varying degrees(the decrease in T2 values was about 2.06 ms in grade Ⅰ, 2.66 ms in grade Ⅱ, and 3.72 ms in grade Ⅲ).Three-month (VAS:4.8±1.3,WOMAC:21.5±4.0) and 6-month (VAS:4.2±1.4,WOMAC:17.2±2.9) after treatment, the VAS and WOMAC score were significantly higher than those before treatment (VAS:6.0±1.2, WOMAC:29.0±2.3) (F=48.846, F=346.746;both P<0.01). Multiple comparisons showed a statistically significant difference between pre-treatment and post-treatment VAS (P<0.01) and it also was significantly different between 3-month and 6-month post-treatment (P<0.01).At 3- and 6-month after treatment,WOMAC scores were significantly different from before treatment.And it also was significantly different between 3-month and 6-month post-treatment (P<0.01).There was a statistically significant improvement in T2 values of patellofemoral articular surface, medial and lateral femoral articular surface at pre-treatment((44.64±4.02)ms,(44.17±3.64)ms and(43.53±3.91)ms) and 3-month ((43.19±3.91)ms,(43.24±3.34)ms and (42.47±3.80)ms), 6-month ((41.49±3.64)ms,(41.83±3.15)ms and (41.10±3.42)ms) after treatment(F=148.845,F=73.657,F=86.268;all P<0.01).The results of the multiple comparisons showed a statistically significant difference in the T2 values of medial and lateral femoral articular surface and patellofemoral articular surface at each time point(all P<0.01).The Pearson correlation analysis suggested that the WOMAC score at pre-treatment was positively correlated with the medial condyle (r=0.856,P<0.01) and the patellofemoral joint surface T2 values (r=0.840,P<0.01);The WOMAC score at 6-month post-treatment was positively correlated with the medial condyle (r=0.731,P<0.01) and the patellofemoral joint surface T2 values (r=0.691,P<0.01). Conclusions: In the treatment of early and mid-stage KOA,MRI T2 mapping sequences are able to indicate the integrity of cartilage morphology and quantitatively evaluate cartilage repair. PRP has a good therapeutic effect on cartilage repair and reconstruction.

Organ specific differences in alteration of aquaporin expression in rats treated with sennoside A, senna anthraquinones and rhubarb anthraquinones / 中国药理学与毒理学杂志

OBJECTIVE Senna and rhubarb are classified as stimulative laxatives, and known to have similar effec?tive constituents, the anthraquinones. Being protected by theβ-glucoside bond, the anthraquinones can reach the intes?tines where they are degraded into complex metabolites by enzymes secreted from the intestinal microbiome. It is these complex metabolites that produce the laxative effects. Then the similarities and differences of action between the anthra?quinones require further elucidation. METHODS Here, we studied metabolites of senna anthraquinones (SAQ), rhubarb anthraquinones (RAQ) and their chemical marker, sennoside A (SA), in a rat diarrhea model. In the in vitro biotransfor?mation experiments, SAQ, RAQ and SA were incubated with rat fecal flora solution and the metabolites produced were analyzed using HPLC. In the in vivo studies, the same compounds were investigated for purgation induction, with mea?surement of histopathology and multiple aquaporins (Aqps) gene expression in six organs. RESULTS SAQ and RAQ had similar principal constituents but could be degraded into different metabolites. A similar profile of Aqps down-regula?tion for all compounds was seen in the colon, suggesting a similar mechanism of action for purgation. However, in the kidneys and livers of the diarrhea-rats, down-regulation of Aqps was found in the RAQ-rats whereas up-regulation of Aqps was seen in the SAQ-rats. Furthermore, the RAQ-rats showed lower aquaporin 2 (Aqp2) protein expression in the kidneys, whilst the SA-rats and SAQ-rats had higher Aqp2 protein expression in the kidneys. This may have implications for side effects of SAQ or RAQ in patients with chronic kidney or liver diseases. CONCLUSION SAQ and RAQ showed similar laxative actions with a similar mechanism, they could display different actions in rat kidneys and livers. We suggest that the clinical usage of senna or rhubarb products should be clarified for patients having chronic kidney or liver diseases.

Effects of Electroacupuncture on Learning and Memory Ability and Brain Inflammatory Factor in Rats with Vascular Cognitive Impairment / 中国中医药信息杂志

Objective To observe the effects of electroacupuncture on the learning and memory ability and cerebral cortex inflammatory factor of rats with vascular cognitive impairment (VCI); To discuss the mechanism of electroacupuncture for preventing and treating VCI. Methods VCI rat models were made in microemboli injection through internal carotid artery method. The successful modeled rats were randomly divided into model group, positive medicine group and electroacupuncture group, and normal rats were taken as control group. Three days after rat models were established, the positive medicine group was given donepezil hydrochlorideby gavage, and electroacupuncture group was given electroacupuncture at "Baihui" and "Zusanli" acupoints. After treatment, the learning and memory ability was detected by Morris water maze test. The contents of TNF-α, IL-6 and IL-1β in rat brain tissue were detected by ELISA. Results The water maze results showed that with the increase of the number of training, the average escape latency of rats to find platform in positive medicine group and electroacupuncture group all had different degrees of shortening in positioning cruise experiment; in space exploration experiment, positive medicine group and electroacupuncture group to cross the platform area for the first time were significantly reduced compared with the model group; compared with the control group, the contents of TNF-α, IL-6 and IL-1β in the model group were increased significantly; compared with the model group, the contents of TNF-α, IL-6 and IL-β in postive medicine group and electroacupuncture group were decreased. Conclusion Electroacupuncture at "Baihui"and "Zusanli" acupoints can decrease the contents of TNF-α, IL-1 and IL-6 in the cortex of VCI rats, and improve the learning and memory ability of rats.

A prevalence study on occupational stress and hypertension among steel production workers / 中国职业医学

OBJECTIVE: To analyze the correlation between occupational stress and hypertension in steel production workers.METHODS: By the stratified cluster sampling method,1 580 steel production workers from an iron and steel group company were selected as study subjects. Occupational stress was measured by the Chinese version of Job Content Questionnaire.The identification of having occupational stress was the ratio of job requirement dimension score over job self-decision dimension score turned to be ≥1. 00. The steel production workers' blood pressure was measured by the updated mercury sphygmomanometer. The effect of occupational stress on blood pressure in steel production workers was analyzed. RESULTS: The dimension score of job self-decision in hypertension group was lower than that in non-hypertension group [20( 16,23) vs 20( 17,24) scores,P < 0. 05]. There was no statistical significant difference in occupational stress ratio,job requirement and social support dimension scores between two groups( P > 0. 05). The multiple logistic regression analysis showed that job self-decision and social support scores were negatively correlated with the incidence of hypertension [odds ratios( 95% confidence intervals) were 0. 68( 0. 51,0. 90) and 0. 54( 0. 45,0. 76),P < 0. 01]. CONCLUSION: Job selfdecision and social support are the influencing factors of the incidence of hypertension in steel production workers. The correlation among occupational stress,job requirement and hypertension are not found in steel production workers.

Bioinformatics analysis raises candidate genes in blood for early screening of Parkinson's disease / 生物医学与环境科学（英文）

Parkinson's disease (PD) is a typical degenerative disease, which is characterized by the most obvious symptoms of movement dysfunction, including shaking, rigidity, slowness of movement and difficulty in walking and gait. This disease can not be clearly identified through laboratory tests at present, thus application of high-throughput technique in studying the expression profiles of PD helps to find the genetic markers for its early diagnosis. Studies on expression profiles of neurodegenerative diseases have revealed the novel genes and pathways involved in the progress of illness. In this study, the expression profiles of PD in blood were compared, showing that 181 differentially expressed genes (DEG) exhibit a similar expression trend both in patients and in normal controls. These genes are enriched significantly in some biological processes, including development, response to drugs, and DNA-dependent regulation of transcription, etc, highlighting that the genetic markers can be used in early diagnosis of PD.

Expression and significance of mRNA and protein of eIF4E, p-eIF4E and MCl-1 in pathological scar / 中华整形外科杂志

<p><b>OBJECTIVE</b>To study the expression of eIF4E, p-eIF4E (Ser 209) and Mcl-1 gene in the pathological scars and to investigate its role and its probable mechanism in the pathogenesis of abnormal scar.</p><p><b>METHODS</b>Quantitative real-time PCR and Western Blot was performed to detect the expression and distribution of mRNA and protein of eIF4E and Mcl-1 in hypertrophic scar (10 cases), keloid (10 cases), normal scar (10 cases), and normal skin (10 cases). Western Blot was performed to detect the expression and distribution of protein of p-eIF4E in hypertrophic scar (10 cases), keloid (10 cases), normal scar (10 cases), and normal skin (10 cases).</p><p><b>RESULTS</b>The expression of eIF4E mRNA and protein were 1.38 +/- 0.45, 1.23 +/- 0.23 in the normal skin (10 cases); 5.400 +/- 0.450, 5.460 +/- 0.460 in normal scar (10 cases); 0.597 +/- 0.060, 0.590 +/- 0.040 in hypertrophic scar (10 cases) and 0.694 +/- 0.066, 0.697 +/- 0.022 in keloid (10 cases). The expression of p-eIF4E protein in the normal skin (10 cases), normal scar (10 cases), hypertrophic scar (10 cases), and keloid (10 cases) were 0.202 +/- 0.037, 0.216 +/- 0.019, 0.426 +/- 0.026, 0.433 +/- 0.027. The expression of Mcl-1 mRNA and protein were 1.510 +/- 0.660, 1.400 +/- 0.530 in the normal skin (10 cases); 6.65 +/- 0.85, 7.23 +/- 1.53 in normal scar (10 cases); 0.589 +/- 0.059, 0.660 +/- 0.063 in hypertrophic scar (10 cases) and 0.870 +/- 0.118, 0.914 +/- 0.064 in the keloid (10 cases). The positive rate of mRNA and protein of eIF4E and Mcl-1 was not statistically different between the hypertrophic scar and keloid (P > 0.05), while they were all remarkably significant between normal scar and abnormal scar (P < 0.05). The phosphorylation of eIF4E in pathological scar was higher than that in control group. In pathological scar, mRNA and protein of eIF4E and Mcl-1 showed a strong positive correlation.</p><p><b>CONCLUSIONS</b>The result indicates that the expression of eIF4E, p-eIF4E and Mcl-1 is increased in pathological scar. eIF4E plays an important role in pathological scar. Its activity is regulated by its phosphorylation. Therefore, eIF4E, p-eIF4E and Mcl-1 overexpression may play an important role in the proliferation of fibroblasts and in the pathogenesis of pathological scar.</p>

Cigarette smoke extract reduces NOS activity and CX43 expression in the corporal cavernosum / 中华男科学杂志

<p><b>OBJECTIVE</b>To study the effects of different doses of cigarette smoke extract (CSE) on the erectile function of male rats and the mechanism of smoking-induced erectile dysfunction (ED).</p><p><b>METHODS</b>A total of 75 healthy male SD rats were randomly divided into Groups A (control), B (dimethyl sulphoxide [DMSO]), C (low-dose CSE), D (medium-dose CSE) and E (high-dose CSE). CSE models were established in male SD rats by hypodermic injection, and 60 days later observed for penile erection following subcutaneous injection of apomorphine. Then the rats were killed and the penile cavernous body obtained for the examination of NOS activity by chromatometry and the determination of Cx43 expression by laser scanning confocal fluorescence microscopy (LCSM).</p><p><b>RESULTS</b>Compared with the control and DMSO groups, penile erection frequency, NOS activity and Cx43 expression in the penile cavernous tissue were significantly decreased in the CSE groups (P < 0.05), and the decrease was proportional to the increase of the doses of CSE. No statistically significant differences were observed between the control and DMSO groups (P > 0.05).</p><p><b>CONCLUSION</b>Cigarette smoke obviously reduces NOS activity and Cx43 expression in the penile cavernous tissue and seriously affects penile erection. The higher the dose, the more serious the influence. The decreases of NOS activity and Cx43 expression may be an important mechanism of ED.</p>

A double suicide gene system driven by KDR promoter selectively kills human colon adneocarcinoma SW480 cells / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the selective killing effect of adenovirus (Ad)-mediated double suicide gene system driven by the KDR promoter (KDR-CDglyTK) on human colon adneocarcinoma SW480 cells.</p><p><b>METHODS</b>KDR-expressing SW480 cells and LS174T cells that did not express KDR were infected by KDR-CDglyTK, and the infection efficiency and the expression of CDglyTK in the cells were detected by RT-PCR. The infected cells were treated with the prodrugs 5-FC and GCV at different concentrations, and the cell-killing effects and bystander effects were evaluated by MTT method. DNA content and the cell cycle changes in SW480 cells were detected by flow cytometry.</p><p><b>RESULTS</b>The expression of green fluorescent protein (GFP) was observed in 95% of the infected SW480 and LS174T cells with a multiplicity of infection (MOI) of 100. RT- PCR demonstrated that the product of CD/TK gene existed in SW480 cells infected by Ad- KDR- CD/TK, but not in infected LS174 cells. The infected SW480 cells exhibited high sensitivity to the prodrugs, but the infected LS174T cells did not (P<0.01). Bystander effects of the double suicide gene system were observed in the coculture of the infected and non-infected SW480 cells. At the MOI of 100, treatment of the infected cells with the prodrugs resulted in increased cell percentage in G(0)-G(1) phase and decreased percentage in S phase and the prodrug-treated cells showed an apoptotic peak in flow cytometry.</p><p><b>CONCLUSION</b>CDglyTK fusion gene system driven by the KDR promoter selectively kills and induces the apoptosis of the KDR-CDglyTK SW480 cells.</p>

Effect of adenovirus-mediated CD/TK double suicide gene system on colorectal cancer growth and cytokines in the tumor microenvironment in mice / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the effect of adenovirus-mediated CD/TK double suicide gene system on tumor growth and cytokine levels in the tumor microenvironment in mice bearing transplanted colorectal cancer.</p><p><b>METHODS</b>CT26 cells were implanted subcutaneously into 30 Balb/c mice, which were subsequently randomized into the control (n=15) and experimental group (n=15). After the tumor formation, CD/TK double suicide gene system was administered for tumor treatment, and the changes in the tumor volume, tumor inhibition rate, and levels of cytokines in the tumor microenvironment were investigated.</p><p><b>RESULTS</b>CD/TK double suicide gene system resulted in a significant inhibition of the tumor growth and significantly increased levels of such cytokines as IL-2, IL-10, TNFalpha and IFNgamma in the tumor microenvironment.</p><p><b>CONCLUSION</b>CD/TK double suicide gene system produces significant tumor inhibition effect and causes obvious cytokine changes in the tumor microenvironment in mice bearing transplanted colorectal cancer.</p>

Effect of ACBP-S on cell cycle and apoptosis in human gastric cancer cells / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To explore the impact of anti-cancer bioactive peptide-S (ACBP-S) on cell proliferation, cell cycle and apoptosis in human stomach cancer cell line MGC-803 cells.</p><p><b>METHODS</b>(1) The cultured MGC-803 cells were treated with ACBP-S at various concentrations for 24, 48, 72 h, respectively. The inhibition rate of proliferation of MGC-803 cells were evaluated by MTT assay. Cell apoptosis was observed by transmission electron microscopy. Cell cycle and apoptosis were analyzed by flow cytometry (FCM). RT-PCR was used to assay the changes of p27 mRNA expression. Immunocytochemistry was used to detect the changes of expression of p27, PCNA, Bax, Bcl-2 proteins, respectively. (2) a nude mouse xenograft model with gastric carcinoma cell was established. ACPB-S was administered into the tail vein of the mice in a dose of 7 microg, every other day, and the mice were killed after two weeks. The tumors were taken off for further analysis.</p><p><b>RESULTS</b>(1) ACBP-S at concentrations of 5.0, 10.0 and 15.0 microg/ml inhibit the growth of MGC-803 cells in a concentration- and time-dependent manner. The concentration of ACBP-S at 20.0 microg/ml showed an inhibition rate of (86.6 + 0.1)%. Typical apoptotic changes were observed under the transmission electron microscope. The result of FCM in the range of 5.0 and 20.0 microg/ml for 24 h showed higher early apoptosis rates, (5.7 +/- 0.2)% and (13.9 +/- 0.6)%, respectively, with s significant difference compared with that of the control group (P < 0.05). The ratio of G0/G1 was significantly increased with the increase of incubation time at 20 microg/ml. RT-PCR showed that the expression of p27 mRNA in MGC-803 cells was markedly increased after ACBP-S treatment. (2) After ACBP-S administration the tumor growth in nude mice was inhibited by 34.2%. More apoptotic and necrotic cells were observed in the mice of treatment group by histological examination with HE staining. The immunocytochemistry demonstrated that the expression of Bax protein was significantly increased and Bcl-2 and PCNA protein expressions were significantly decreased after ACBP-S treatment.</p><p><b>CONCLUSION</b>ACBP-S has marked inhibiting effect upon the growth of MGC-803 cells inducing more apoptosis. The anti-cancer mechanism is probably related with its regulatory effects on cell cycle and apoptosis in the tumor cells.</p>

Island skin flap supplied by superficial temporal vessel for the whole ear lobe defect / 中华整形外科杂志

<p><b>OBJECTIVE</b>To introduce a new method for reconstruction of the whole ear lobe defect.</p><p><b>METHODS</b>The free island skin flap supplied by superficial temporal vessel which was designed at the area anterior and superior to crus helicis. The flap was transferred through subcutaneous tunnel and self-folded to reconstruct the whole ear lobe defect.</p><p><b>RESULTS</b>Since 1999, 6 cases were treated with no complication. The ear lobe shape and skin colour were very natural.</p><p><b>CONCLUSIONS</b>The island skin flap supplied by superficial temporal vessel is very suitable for the whole ear lobe defect with good cosmetic results.</p>

Clinical observation on treatment of 75 mid-late stage cancer patients with yanshu Injection / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To study the effect of Yanshu Injection (YI) used in comprehensive treatment on mid-late stage cancer.</p><p><b>METHODS</b>One hundred and fifty patients with malignant cancer were equally randomized into the comprehensive treatment group (group A) and the control group (group B), both groups were treated systematically according to the NCCN 2005 cancer practice guideline, but 20 ml of YI was given additionally to group A every day.</p><p><b>RESULTS</b>After treatment, the level of plasma CD4 and CD4/CD8 ratio were significantly lower in group B than those in group A (P < 0.05); the response rate (RR) was 32.00% (24/75) and 38.67% (29/75) in group B and A respectively, showing insignificant difference (P>0.05), and the clinical benefit rate (CBR)was 58.67% (44/75) in group A, lower than that in group B (85.33% (64/75), P< 0.05); the quality of life (QOL) in group A was superior to that in group B (P<0.05); and the incidence of main adverse reaction to chemotherapeutic agents was significantly lower in group A as compared to that in group B (P<0.05).</p><p><b>CONCLUSION</b>YI could regulate the function of T-lymphocyte subsets, raise the CBR and QOL and reduce adverse reaction of chemotherapy in patients with mid-late stage cancer.</p>

Expression and significance of Skp2 and p27kip1 protein in pathological scar / 中华整形外科杂志

<p><b>OBJECTIVE</b>To study the expression of Skp2 gene (s-phase kinase associated protein 2) in the pathological scars and its relationship with p27kip1 level and to investigate its role and its probable mechanism in the pathogenesis of abnormal scars.</p><p><b>METHODS</b>Immunohistochemical technique was performed to detect the expression and distribution of Skp2 and p27kip1 protein in hypertrophic scar (42 cases), keloid (18 cases), normal scar (40 cases) and normal skin (50 cases), statistics was used to analyze the data.</p><p><b>RESULTS</b>The positive rate of Skp2 and p27kip1 protein expression was not statistically different between the hypertrophic scar and keloid (P > 0.05), while they were all remarkably significant in comparison between normal scar and abnormal scar (P < 0.05). In pathological scar the protein of Skp2 and p27kip1 showed a strong inverse correlation (P < 0.01).</p><p><b>CONCLUSION</b>The result indicated that the expression of Skp2 was increased and it may lead to decrease p27kip1 level in the hypertrophic scar and keloid, Skp2 overexpression might play an important role in the proliferation of fibroblasts and in the pathogenesis of pathological scar by adjusting the regulation of cyclins such as p27kip1.</p>