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OBJECTIVE@#To provide an overview of the incidence of knee donor -site morbidity after autologous osteochondral mosaicplasty.@*METHODS@#A comprehensive search was conducted in PubMed, EMbase, Wanfang Medical Network, and CNKI databases from January 2010 to April 20, 2021. Relevant literature was selected based on predefined inclusion and exclusion criteria, and data were evaluated and extracted. The correlation between the number and size of transplanted osteochondral columns and donor-site morbidity was analyzed.@*RESULTS@#A total of 13 literatures were included, comprising a total of 661 patients. Statistical analysis revealed an incidence of knee donor-site morbidity at 8.6% (57/661), with knee pain being the most common complaint, accounting for 4.2%(28/661). There was no significant correlation between the number of osteochondral columns and postoperative donor-site incidence (P=0.424, N=10), nor between the diameter size of osteochondral columns and postoperative donor-site incidence(P=0.699, N=7).@*CONCLUSION@#Autologous osteochondral mosaicplasty is associated with a considerable incidence of knee donor-site morbidity, with knee pain being the most frequent complaint. There is no apparent correlation between donor-site incidence and the number and size of transplanted osteochondral columns. Donors should be informed about the potential risks.
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Humanos , Incidência , Cartilagem/transplante , Joelho , Articulação do Joelho/cirurgia , Dor , Cartilagem Articular , Transplante Autólogo , Transplante ÓsseoRESUMO
OBJECTIVES@#To study the left heart structure and functional characteristics of term neonates with intrauterine growth restriction (IUGR).@*METHODS@#This study included 86 term neonates with IUGR admitted to the Neonatal Ward of Beijing Friendship Hospital, Capital Medical University from January 2019 to January 2022 as the IUGR group, as well as randomly selected 86 term neonates without IUGR born during the same period as the non-IUGR group. The clinical data and echocardiographic data were compared between the two groups.@*RESULTS@#The analysis of left heart structure and function showed that compared with the non-IUGR group, the IUGR group had significantly lower left ventricular mass, left ventricular end-diastolic diameter, left ventricular end-systolic diameter, left atrial diameter, end-diastolic interventricular septal thickness, left ventricular posterior wall thickness, left ventricular end-diastolic volume, left ventricular end-systolic volume, and stroke volume (P<0.05) and significantly higher ratio of end-diastolic interventricular septal thickness to left ventricular posterior wall thickness, proportion of neonates with a mitral peak E/A ratio of ≥1, and cardiac index (P<0.05). The Spearman correlation analysis suggested that stroke volume was positively correlated with birth weight and body surface area (rs=0.241 and 0.241 respectively; P<0.05) and that the ratio of end-diastolic interventricular septal thickness to left ventricular posterior wall thickness was negatively correlated with birth weight and body surface area (rs=-0.229 and -0.225 respectively; P<0.05).@*CONCLUSIONS@#The left ventricular systolic function of neonates with IUGR is not significantly different from that of neonates without IUGR. However, the ventricular septum is thicker in neonates with IUGR. This change is negatively correlated with birth weight and body surface area. The left ventricular diastolic function may be impaired in neonates with IUGR.
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Humanos , Recém-Nascido , Peso ao Nascer , Ecocardiografia , Retardo do Crescimento Fetal , Coração , Ventrículos do Coração/diagnóstico por imagem , Função Ventricular EsquerdaRESUMO
Background At present, a large number of reports focus on the bones of limbs and trunk, while there are few studies on the effect of fluorosis on jawbone which is the inevitable structural basis for the development and treatment of oral diseases. Objective To preliminarily investigate the effect of fluoride exposure on the mechanical properties of jawbone by observing the changes in the intraosseous environment and the maximum load against shearing force (LSFmax) of the jawbone in rats with chronic fluoride treatment. Methods Screening experiment: 48 SD male rats were randomly divided into a control group and three fluoride exposure groups (50, 150, and 250 mg·L−1 fluoride concentration), 12 rats in each group. The fluoride exposure groups were molded by feeding different concentrations of sodium fluoride solution, and the control group drank tap water from Guizhou area. Each group was further divided into 4 subgroups with 3 animals each according to observation time points after 0, 2, 4, and 6 months. The LSFmax of the jawbone was measured with an electronic universal ergometer, the expression of type I collagen (Col1) was shown by Sirius red staining, and the expression of runt-related transcription factor 2 (Runx2) was determined semi-quantitatively by immunohistochemistry at selected time points. Formal experiment: 12 male SD rats were randomly divided into a fluoride exposure group and a control group. The fluoride exposure group were fed with 150 mg·L−1 sodium fluoride solution, and the control group drank tap water from Guizhou. After feeding with fluoride for 5 months, the ergometer was used to measure the LSFmax of the jawbone. Osteoclasts were counted after tartrate resistant acid phosphatase (TRAP) staining. Col1, Runx2, bone morphogenetic protein 2 (BMP-2), alkaline phosphatase (ALP), and cathepsin K (Cath K) were detected semi-quantitatively by immunohistochemistry expression and Sirius red staining. Micro computed tomography (Micro CT) was used to observe the trabecular bone microstructure. Results Screening experiment: The LSFmax of the control group and the 50 mg·L−1 fluoride exposure group reached the peak value at the 2nd month, and the LSFmax of the 50 mg·L−1 fluoride exposure group reached the valley value at the 4th month. The LSFmax of the 150 mg·L−1 fluoride exposure group at the 4th month was higher than that at the 6th month (P<0.05). There was no significant difference in the LSFmax at each time point in the 250 mg·L−1 fluoride exposure group. At the same time point, there was no statistically significant difference in LSFmax among the groups. The Col1 levels of the 50 mg·L−1, 150 mg·L−1, and 250 mg·L−1 fluoride exposure groups were higher than the time point 0 from the 2nd month (P<0.05). The Runx2 showed no statistically significant difference by concentration or time. Formal experiment: After feeding with 150 mg·L−1 fluoride for 5 months, the LSFmax of the fluoride exposure group was greater than that of the control group (P<0.05). The expressions of Col1, Runx2, BMP2, ALP, and Cath K in the fluorosis exposure group were higher than those in the control group (P<0.05). There were no statistically significant differences in osteoclast count or indicators of bone trabecular microstructure. Conclusion Chronic fluoride exposure may increase the shear strength of jaw bone.
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Auditory neuropathy spectrum disorder (ANSD) represents a variety of sensorineural deafness conditions characterized by abnormal inner hair cells and/or auditory nerve function, but with the preservation of outer hair cell function. ANSD represents up to 15% of individuals with hearing impairments. Through mutation screening, bioinformatic analysis and expression studies, we have previously identified several apoptosis-inducing factor (AIF) mitochondria-associated 1 (AIFM1) variants in ANSD families and in some other sporadic cases. Here, to elucidate the pathogenic mechanisms underlying each AIFM1 variant, we generated AIF-null cells using the clustered regularly interspersed short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) system and constructed AIF-wild type (WT) and AIF-mutant (mut) (p.T260A, p.R422W, and p.R451Q) stable transfection cell lines. We then analyzed AIF structure, coenzyme-binding affinity, apoptosis, and other aspects. Results revealed that these variants resulted in impaired dimerization, compromising AIF function. The reduction reaction of AIF variants had proceeded slower than that of AIF-WT. The average levels of AIF dimerization in AIF variant cells were only 34.5%‒49.7% of that of AIF-WT cells, resulting in caspase-independent apoptosis. The average percentage of apoptotic cells in the variants was 12.3%‒17.9%, which was significantly higher than that (6.9%‒7.4%) in controls. However, nicotinamide adenine dinucleotide (NADH) treatment promoted the reduction of apoptosis by rescuing AIF dimerization in AIF variant cells. Our findings show that the impairment of AIF dimerization by AIFM1 variants causes apoptosis contributing to ANSD, and introduce NADH as a potential drug for ANSD treatment. Our results help elucidate the mechanisms of ANSD and may lead to the provision of novel therapies.
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Humanos , Fator de Indução de Apoptose/metabolismo , NAD/metabolismo , Dimerização , ApoptoseRESUMO
The glycosylation heterogeneity of recombinant human pro-urokinase (pro-UK) was assessed using ultra-performance liquid chromatography-mass spectrometry (UPLC-MS). Firstly, the source of heterogeneity was determined by measuring the Mr of intact protein before and after N-deglycosylation. Glycosylation sites and the proportion of O-glycopeptides then were determined at the peptide level. Finally, the N-glycans were confirmed and quantified using the N-glycan profile. Results show that the structural heterogeneity of pro-UK is mainly caused by glycosylation. All T18 were fucosylated, and 6.4% of S138/139 was O-glycosylated with two kinds of oligosaccharides with a ratio of 6.0% and 0.4% respectively. All N302 positions were N-glycosylated by more than ten types of glycans, among which A2F and A3F accounted for 80% of the total. The assessment of glycosylation heterogeneity of pro-UK will provide a reference for quality standardization.
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To establish and validate the design space of the Digeda-4 flavored decoction( DGD-4D) extraction process by using the quality by design( Qb D) concept. With DGD-4D decoction pieces as a model drug,with the transfer rate of aesculin,picroside I,picroside Ⅱ,geniposide and the yield of extract as critical quality attributes( CQAs),the single factor experiment design was used to determine the level of each factor; the Plackett-Burman experiment design was used to select the critical process parameters( CPPs);and the Box-Behnken experiment design was used to optimize the extraction process. The design space of the DGD-4D extraction process was established,and finally,four experimental points were selected to verify the established model. The single factor experiment determined the levels of each factor,including soaking time 60 min and 30 min,water adding volume 12 times and 8 times,extraction time 90 min and 30 min,number of extraction times 3 times and 1 time,as well as extraction temperature 100 ℃ and 90 ℃.By Plackett-Burman experimental design,the DGD-4D water addition,extraction time and number of extraction times were determined to be CPPs. The Box-Behnken experimental variance analysis showed that P of the regression model was less than 0. 01 and the misstated value was more than 0. 01,indicating that the model had good predictive ability,and the operation space of CPPs in the DGD-4D extraction process was determined as follows: the amount of water addition was 10-12 times; extraction time 50-80 min; and number of extraction times was 3 times. The design space of DGD-4D extraction process based on the concept of Qb D is conducive to improving the stability of product quality and laying a foundation for the future development of DGD-4D.
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Química Farmacêutica , Métodos , Medicamentos de Ervas Chinesas , Química , Projetos de PesquisaRESUMO
Objective:To optimize the decoction process of Digda-4 decoction(DGD-4D), and provide reference for the standardization study of decoction of Mongolian medicine decoction. Method:Taking DGD-4D as model drug, different decoction methods of Mongolian medicine were compared, HPLC was used to determine contents of aesculetin, geniposide, picroside Ⅰ and picroside Ⅱ.On the basis of single factor tests, central composite design-response surface methodology was adopted to optimize the decoction process of DGD-4D with transfer rates of 4 components and dry extract rate as indexes, regression model fitting was carried out by Design-Expert 8.0.6 software, prediction model of process parameters was established, and the optimal process was verified. Result:The optimal decoction condition of DGD-4D was determined to be adding 40 times the amount of water and decocting for 17 min, decocting once.Transfer rates of aesculetin, geniposide, picroside Ⅰ, picroside Ⅱ and dry extract rate were 70.01%, 94.11%, 61.23%, 92.32%, 32.89%, respectively. Conclusion:The optimum decoction process of DGD-4D is established, it has important reference significance for excavating, sorting, improving the level of Mongolian medicine preparations and ensuring the consistency of their clinical efficacy.
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West Nile virus (WNV) causes West Nile fever and West Nile encephalitis. Because infection by WNV creates serious public health problems, its simple, rapid, and visual detection is very important in clinical practice, especially in resource-limited laboratories. We have developed a rapid, specific, and highly sensitive internally controlled reverse transcription recombinase-aided amplification (RTRAA) assay to detect WNV, using both real-time fluorescence and the lateral flow dipstick (LFD) at 39.0 °C for 30 min. The analytical sensitivity of the RT-RAA assay was 10 plasmid copies and 1.6 pfu per reaction with real-time fluorescence, and 1,000 plasmid copies per reaction with the LFD. No crossreaction with other control viruses was observed. Compared with the RT-qPCR assay, the RT-RAA assay demonstrated 100% sensitivity and 100% specificity for WNV.
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To establish the high performance liquid chromatography (HPLC) fingerprint for Digeda-4 decoction (DGD-4D), determine the contents of aesculetin, geniposide, picroside Ⅰ, picroside Ⅱ and ellagicacid in DGD-4D, and provide the scientific foundation for quality control of DGD-4D. The analysis was performed on Diamonsil(2) C₁₈ (4.6 mm×250 mm,5 μm) column, with methanol-0.1% phosphoric acid aqueous solution as mobile phase for gradient elution. The flow rate was 1.0 mL·min⁻¹; injection size was 10 μL; temperature was maintained at 30 °C, and the detection wavelength was set at 254 nm. The common mode of DGD-4D HPLC fingerprint was established, and the hidden information was analyzed by Chemometrics. Chromatographic peaks for DGD-4D were identified by HPLC and quantitative analysis was conducted for characteristic peaks. There were 17 common peaks in the fingerprints and the similarity of the fingerprints was over 0.9 in all 15 batches. The samples were broadly divided into four kinds by principal component analysis and clustering analysis. Four marker compounds were verified by partial least squares discriminant analysis, and No. 9, 12 and 14 peaks were identified as geniposide, picroside Ⅱ, and picroside Ⅰ respectively. The average recoveries were in the range of 95.91%-97.31%. The HPLC fingerprint method for content determination is reliable, accurate, rapid, simple, and reproducible, and can be used as one of the effective methods to control the quality of DGD-4D.
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Cromatografia Líquida de Alta Pressão , Cinamatos , Medicamentos de Ervas Chinesas , Padrões de Referência , Glucosídeos Iridoides , Iridoides , Metanol , Análise de Componente Principal , Controle de QualidadeRESUMO
Objective: To explore the expression of SLAMF6 on CD8(+) T cells in patients with severe aplastic anemia (SAA) and its correlation with disease immune status. Methods: By flow cytometry (FCM), SLAMF6 expression level in peripheral blood CD8(+) T cells was detected in 21 patients with SAA and 15 normal controls respectively from February 2017 to April 2018. The correlation between SLAMF6 expression level and hematopoietic functions, including HGB, PLT, the neutrophil granulocyte and reticulocyte absolute value in peripheral blood, hyperplasia degree (percentage of granulocytes, erythrocytes, lymphocytes and megakaryocytes in bone marrow) and perforin, granzyme B, IFN-γ expression level in CD8(+) T cells were evaluated. To further confirm the effect of SLAMF6 on CD8(+) T cells, anti-SLAMF6 Ab was used to block SLAMF6 pathway (IgG as control), and FCM was used to detect the perforin, granzyme B, and IFN-γ production of CD8(+) T cells. Results: The expression of SLAMF6 on CD8(+) T cells in untreated SAA patients[(56.29±12.97)%]was significantly lower than that of normal controls[(80.96±7.36)%](t=-7.672, P<0.001). The expression of SLAMF6 on CD8(+) T cells in SAA patients were positively correlated with the HGB, PLT, the neutrophil granulocyte and reticulocyte absolute value in peripheral blood, percentage of granulocytes, erythrocytes in bone marrow (all P<0.05), but they were negatively correlated with the percentage of lymphocytes in bone marrow, and the expression of perforin, granzyme B, and IFN-γ of CD8(+) T cells (all P<0.05). After blocking SLAMF6 pathway by anti-SLAMF6 Ab, the expression levels of perforin, granzyme B and IFN-γ in SAA patients were significantly higher than those in the untreated group, and the differences were statistically significant (all P<0.05). Conclusions: SLAMF6 is significantly down-regulated on CD8(+) T cells in SAA patients, which may act as a negative immunoregulatory molecule participating in the mechanism of SAA by affecting the functional molecules secretion on CD8(+) T cells.
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Humanos , Anemia Aplástica , Medula Óssea , Linfócitos T CD8-Positivos , Citometria de Fluxo , Perforina , Família de Moléculas de Sinalização da Ativação LinfocitáriaRESUMO
The hepatotoxicity of gefitinib is an important factor limiting its clinical application. In order to control the toxicity, we conducted this study to find the gene variation that can explain and predict the occurrence and severity of hepatotoxicity of gefitinib. Ninety patients with non-small cell lung cancer were included in the retrospective clinical study. Detailed hepatotoxicity induced by gefitinib and epidemiological characteristics were recorded. Twenty-six candidate single-nucleotide polymorphisms of molecular targets, metabolic enzymes, transporters and chemokines were genotyped by matrix-assisted laser desorption/ionization time-of-flight platform. Various confounding factors, such as age, gender and smoking status, were included in the follow-up analysis and variability in the extent of hepatotoxicity was best explained by a multivariate logistic regression model incorporating. The severity of hepatotoxicity was associated with mitogen-activated protein kinase 1 rs13515 (OR=9.467, P=0.074). The research about pharmacogenomic of gefitinib identified the determinants of the drug-induced liver injury. These findings provide a basis to design clinical trials targeting a particular toxicity of gefitinib or similarly targeted agents to benefit patients on long-term gefitinib treatment.
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<p><b>OBJECTIVE</b>To investigate the effects of Cyclin A1 on the proliferation of SKM-1 cells and its underlying role in myelodysplastic syndrome (MDS).</p><p><b>METHODS</b>Cyclin A1 was knocked down with its small interfering RNA (siRNA). The efficiency of siRNA transfection was measured by Western blot and RT-PCR. Then the proliferation of SKM-1 cells and the expression of CDK2,RUNX1 and SRSF2 with and without knockdown of Cyclin A1 recorded and analysed respectively.</p><p><b>RESULTS</b>Cyclin A1 was knocked down by siRNA after transfected for 48 h. The kncokdown of Cyclin A1 inhibited the proliferation of SKM-1 cells and down-regulated the expression of CDK2, RUNX1 and SRSF2, and these effects were at least partially mediated through RUNX1 and SRSF2 signaling pathway.</p><p><b>CONCLUSION</b>Cyclin A1 plays an important role in the proliferation of SKM-1 cells. These findings provide new insights into the pathogenesis of MDS, and it may be a potential target in the treatment of MDS.</p>
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<p><b>OBJECTIVE</b>To explore the effect and mechanism of Qingfei Mixture (), a Chinese medicine, in treating mycoplasma pneumonia (MP) in MP patients and rat model METHODS: A total of 46 MP children with phlegm heat obstructing Fei (Lung) syndrome were randomly assigned to two groups by the method of random number table, with 23 children in each group. The control group was treated with intravenous infusion of azithromycin; the treatment group received intravenous infusion of azithromycin and oral administration of Qingfei Mixture. The treatment course was 7 days. Major symptoms and minor symptoms were observed and scored before and after treatments. A rat model of MP was also established. A total of 120 wistar rats were randomly divided into 5 groups: a normal group, infection group, Qingfei Mixture treatment group, azithromycin treatment group, and Qingfei Mixture + azithromycin treatment group. Each group contained 24 rats, from which every 6 were euthanatized 1, 3, 7 and 14 days after infection. MP DNA in pulmonary tissue homogenates was detected using real-time fluorescence quantitative polymerase chain reaction. Pathology was assessed after hematoxylin (HE) staining and lung tissue pathology scores were determined in pulmonary tissue. Transmission electron microscopic detection and electronic image analysis were performed on lung tissue 3 days after infection. Interleukin (IL)-17 was detected in serum using enzymelinked immunosorbent assay (ELISA) 7 days after infection.</p><p><b>RESULTS</b>In the clinical study, both control and the treatment group showed improved results on removing symptoms of phlegm heat syndrome compared to the control group (P<0.05). In animal experiments, On the 7th day after MP infection, as detected by electron microscopy, the pulmonary capillary basement membranes of the azithromycin + Qingfei Mixture treatment group were much thinner than those of the azithromycin or Qingfei mixture treatment groups (P<0.05). The level of serum IL-17 in the azithromycin + Qingfei Mixture treatment group was lower than that in the azithromycin or Qingfei Mixture groups (P<0.01).</p><p><b>CONCLUSION</b>Both Qingfei Mixture and azithromycin have therapeutic effects on mycoplasma pneumoniae pneumonia, but the combination of both agents had the greatest effect.</p>
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Objective To explore the preparation of a rat model of pneumonia model induced by Pseudomonas aeruginosa( PA) using different methods,and to lay the foundation for further studies. Methods 48 SD rats were randomly divided into 4 groups:the control group (A), the intratracheal injection group (B), the trachea cannulation group (C) and the intranasal inoculation group ( D) . After intervention with different treatment modalities, the body weight,tempera-ture,white blood cell count and lung pathological changes in the rats of all groups were detected at 5, 10, 15 days. Results 1. The behavior, body weight, temperature, leukocytes and pathological inflammatory changes of the lung in rats of the model groups were significantly different from that of control group. 2. Pseudomonas aeruginosa was detected in rats of all the model groups, but the control group was negative. Conclusions Rat model of Pseudomonas aeruginosa infected pneu?monia can be successfully established by intranasal inoculation. This method can avoid the inflammatory interference from operation, and is simple and suitable for popularization.
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With the universal two-child policy implementation, the birth rate increased, posing challenges to pediatrician allocation. Based on the birth rate, we calculated pediatrician demands and gaps during the period from 2016 to 2020 by the method of health service demand. The results showed that except Beijing and Shanghai, the ped-iatrician supply and demand ratios are less than 0 . 80 and additional numbers of pediatricians ranging from 191 981 to 198 287 are needed to meet the service demands. We recommend increasing the number of pediatricians taking both national supply-demand ratios and gaps by rationally using reasonable enrolment quota and improving the treatment and other reasonable ways to increase pediatricians. In addition, we should enhance information disclosure and guid-ance, and improve the hierarchical hospital visit system to alleviate the pressure of big cities.
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With the universal two-child policy implementation, the birth rate increased, posing challenges to the maternity beds resource allocation. Based on the birth rate and the method of health service demand, we calculat-ed the maternity beds demands and gaps during the period from 2016 to 2020 . Results showed that numbers between 73 478 and 99 004 of maternity beds are needed annually and mainly allocated to eastern and central areas as well. In addition, the maternity beds of different delivery institutions should be adjusted and the hierarchical diagnosis system should be improved in order to alleviate the pressure of the obstestric acceepts in big cities like Beijing and Shanghai.
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<p><b>OBJECTIVE</b>To explore the effect of costimulatory signaling molecules (CD80, CD86) expression on the quantity and function of B lymphocytes in peripheral blood (PB) of the patients with immune thrombocytopenia (ITP).</p><p><b>METHODS</b>A total of 55 ITP patients (30 cases were newly diagnosed and 25 cases were in remission), 25 healthy volunteers as controls were enrolled in this study. The levels of CD19(+)CD5(+), CD19(+)CD80(+), CD19(+)CD86(+), CD41a(+)IgG, CD41a(+)IgM and IgG, IgM in CD19(+)B cells were measured by flow cytometry (FCM). The correlation of CD19(+)B cells with clinical parameters of ITP patients was analyzed.</p><p><b>RESULTS</b>The level of B1 (CD19(+)CD5(+)) of newly diagnosed ITP patients was significantly higher than that of remitted ITP patients and controls (P<0.05). The level of CD19(+)CD80(+) of newly diagnosed ITP patients was significantly higher than that of remitted ITP patients and controls (P<0.05). And the expression of IgG and IgM in CD19(+)B cells of newly diagnosed ITP patients was significantly higher than that of remitted ITP patients and controls (P<0.05). The levels of IgG and IgM in remitted ITP patients after treatment were significantly lower than that before treatment (P<0.05). The level differences of IgG and IgM before and after treatment in refractory ITP patients were not statistically significant (P>0.05). The expression of CD19(+)CD80(+) in newly diagnosed ITP patients positively correlated with the level of Th1 and Th1/Th2 (r=0.502, r=0.471, P<0.05). The expression of CD19(+)CD80(+) of newly diagnosed ITP patients positively correlated with the level of IgG and IgM in CD19(+)B cells (r=0.552, r=0.467, P<0.05), and negatively correlated with PB platelet count (r= -0.424, P<0.05). The levels of IgG and IgM in CD19(+)B cells of newly diagnosed ITP patients negati- vely correlated with PB platelet count (r=-0.658, r=-0.526, P<0.05).</p><p><b>CONCLUSION</b>The enhacement of costimulatory signaling pathway of CD19(+)B cells in ITP patients results in the abnormal activation of B lymphocytes, thereby mediates the dysfunction of immune system and involves in the pathogenesis of ITP.</p>
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Humanos , Linfócitos B , Citometria de Fluxo , Contagem de Plaquetas , Púrpura Trombocitopênica Idiopática , Transdução de Sinais , TrombocitopeniaRESUMO
As one of the primary prevention measures to reduce birth defects , the premarital healthcare service has played an important role in the prevention of communicable diseases , maintaining the harmonious and happy mar-riage, health and other aspects of protection of the next generation .Different countries and regions also design and implement the premarital medical examination system based on their actual situations .This article summarized the practices, characteristics and experiences of premarital healthcare services in some foreign countries and regions through several aspects including model , set projects content , financing and other aspects of the application of the premarital results.Finally, this paper put forwards suggestions on the premarital healthcare services in our country to help healthy the carrying out of the premarital work .
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In this paper , we discussed the financing mechanisms of premarital healthcare services from their properties combined with the status quo financing in our country .We then provided the scientific basis and decision-making reference for improving financing mechanism to improve the premarital healthcare system .A literature or doc-umentary and field researches have combed the present situation of the premarital healthcare services financing mech -anisms at home and abroad .Related data were collected in eight research areas , namely Fujian, Guangxi, Yunnan, Hubei, Jiangsu, Heilongjiang, Beijing and Tianjin and the related personnel from health administrative department , civil affairs departments , maternal and child healthcare institutions were interviewed in terms of Field Research .From the main content at present , premarital healthcare services belong to the category of quasi-public goods .We dis-cussed the financing mechanisms from the financing levels , sources of funds , fund allocation , payment and financial regulatory and other aspects .Finally, some policy recommendations were put forward including making clear the na-ture of premarital healthcare service property , establishment of a special financial investment mechanism , unify the basic financing service standard after scientific feasibility studies , timely and fully allocate special premarital health-care service funds to strengthen the fund supervision policy recommendations .
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Objective:This article uses the Mitt-Horn Model to analyze the premarital healthcare policies imple-mentation, in order to seek viable path for the effective implementation .Methods: Eight provinces, namely Guangxi, Fujian, Yunnan, Jiangsu, Hubei, Heilongjiang, Tianjin and Beijing were chosen to carry out the field research .Relevant information and data were collected through interviews , questionnaires, site visits, etc., and all relate to the implementa-tion of a qualitative premarital analysis policy .Results:The research areas have refined the local premarital policy targets under the relevant legal framework , and have improved the policy implementation resources and execution environment . Conclusion:The premarital healthcare effects of measures implemented in the country based on the actual situation is good, but there are still some problems such as poor policy implementation with no in-depth sector, resource investment deficit in the policy , insufficient inter-department coordination and other issues affecting the policy implementation results .