Autologous platelet-rich gel in the treatment of diabetic foot ulcers: A retrospective study.

This study retrospectively investigated the effectiveness and safety of autologous platelet-rich gel (APRG) for the treatment of diabetic foot ulcers (DFU). In this retrospective study, we reviewed the electronic medical records (EMR) of 72 patients with DFU. The patients were allocated to a treatment group (n = 36) or a control group (n = 36). The patients in both groups received standard care (SC) and dressing change. In addition, patients in the treatment group also received APRG. Patients in both groups were treated for 12 weeks. The outcomes were DFU healing time (days), length of hospital stay (days), healing rate of DFU, DFU surface area reduction (cm2), and adverse events. We assessed and analyzed the outcomes before and after the 12-week treatment period. After treatment, there were significant differences in DFU healing time (P = .04), length of hospital stay (P = .04), DFU healing rate, and DFU surface area reduction (P < .01). Regarding safety, no EMR reported adverse events in this study. The results of this study showed that the APRG may benefit patients with DFU. However, high-quality prospective randomized controlled trials are required to verify these findings.

A protocol of systematic review and meta-analysis of continuous vacuum sealing drainage for diabetic foot ulcer.

BACKGROUND: Although continuous vacuum sealing drainage (CVSD) is often reported for the management of diabetic foot ulcer (DFU), its effectiveness has been evaluated primarily via clinical outcomes with limited attention. This study will aim to assess the effectiveness of CVSD for the treatment of patients with DFU. METHODS: We will carry out a search in Cochrane Library, MEDLINE, Embase, CINAHL, PsycINFO, Web of Science, Allied and Complementary Medicine Database, Chinese Biomedical Literature Database, and China National Knowledge Infrastructure from their inceptions to the March 1, 2020. We will exert the searches in those electronic databases without restrictions of language, and the use of validated filters to obtain eligible studies. In addition to the search in electronic databases, we will retrieve studies from conference proceedings, and reference lists of included trials. We will use Cochrane risk of bias tool to assess study quality for each eligible study. All statistical analysis will be conducted using RevMan 5.3 software. RESULTS: This study will systematically summarize the most present evidence to assess the effectiveness and safety of CVSD for the management of DFU. CONCLUSION: The results from this study will contribute to obtain a genuine understanding of perspective from evidence-based medicine and a scientific basis for the effectiveness and safety of CVSD for the treatment of DFU. PROSPERO REGISTRATION NUMBER: PROSPERO CRD42020170723.

Impact of ultrasound angiography combined with fine needle aspiration for the diagnosis of thyroid nodules.

BACKGROUND: This study aims to systematically investigate the impact of ultrasound angiography (UA) combined with fine needle aspiration (FNA) for the diagnosis of thyroid nodules (TNs). METHODS: The following electronic databases will be searched: MEDLINE, EMBASE, Cochrane Library, PsycINFO, Web of Science, Cumulative Index to Nursing and Allied Health Literature, Allied and Complementary Medicine Database, Chinese Biomedical Literature Database, and China National Knowledge Infrastructure. We will search them from their inceptions to the present without language limitations. We will consider all case-controlled studies on investigating the impact of diagnosis UA combined FNA for TNs. We will apply Quality Assessment of Diagnostic Accuracy Studies tool to assess methodological quality for all eligible studies. RESULTS: In this study, outcomes consist of sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, and diagnostic odds ratio. All these outcomes will be analyzed to evaluate the diagnostic accuracy of UA combined with FNA for TNs. CONCLUSION: This study will provide evidence of the diagnostic accuracy of UA combined with FNA for TNs. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42019138884.

[Research status and prospects of DNA test on difficult specimens].

This paper reviews the advances of DNA detection on three types of difficult biological specimens including degraded samples, trace evidences and mixed samples. The source of different samples, processing methods and announcements were analyzed. New methods such as mitochondrial test system, changing the original experimental conditions, low-volume PCR amplification and new technologies such as whole genome amplification techniques, laser capture micro-dissection, and mini-STR technology in recent years are introduced.

In vivo antibacterial activity of chinfloxacin, a new fluoroquinolone antibiotic.

OBJECTIVES: To evaluate the in vivo antibacterial efficacy of chinfloxacin, a novel fluoroquinolone, in murine systemic and local infection models. METHODS: The efficacy of chinfloxacin in systemic infection was evaluated in a mouse peritonitis model using isolates of methicillin-susceptible Staphylococcus aureus (MSSA, n = 3), methicillin-resistant Staphylococcus aureus (MRSA; n = 1), penicillin-intermediate Streptococcus pneumoniae (PISP; n = 1), penicillin-resistant S. pneumoniae (PRSP; n = 2), vancomycin-susceptible Enterococcus faecalis (VSE; n = 1), vancomycin-resistant E. faecalis (VRE; n = 2), Escherichia coli (n = 3) and Klebsiella pneumoniae (n = 2). The local infections included mouse pulmonary infections caused by penicillin-susceptible S. pneumoniae (PSSP; n = 1), PRSP (n = 1) and K. pneumoniae (n = 2). RESULTS: In the mouse systemic infection model, chinfloxacin demonstrated potent activity against MSSA [50% effective dose (ED(50)) 2.28-4.15 mg/kg], MRSA (ED(50) 14.75 mg/kg), PISP (ED(50) 6.20 mg/kg), PRSP (ED(50) 3.51-5.03 mg/kg), VSE (ED(50) 25.02 mg/kg), VRE (ED(50) 5.18-15.39 mg/kg), E. coli (ED(50) 1.25-1.90 mg/kg) and K. pneumoniae (ED(50) 2.92-8.28 mg/kg). The therapeutic efficacy of chinfloxacin was generally similar to (P > 0.05) that of moxifloxacin, significantly higher (P < 0.01 or P < 0.05) than that of levofloxacin in Gram-positive isolate infections (MSSA, MRSA, PISP, PRSP, VSE and VRE), and less than that of levofloxacin against E. coli and K. pneumoniae infections (P < 0.01). In the mouse pulmonary infection model, chinfloxacin showed potent activity towards S. pneumoniae (higher than levofloxacin and ciprofloxacin) and K. pneumoniae (lower than levofloxacin and similar to or higher than ciprofloxacin) infections. CONCLUSIONS: The results validated the potent efficacy of chinfloxacin in vivo. The high efficacy of chinfloxacin in murine systemic and local infections warrants investigation of its clinical use.

Short-tandem repeat analysis in seven Chinese regional populations.

In the present study, we investigated the application of 13 short tandem repeat (STR) loci (D13S317, D7S820, TH01, D16S539, CSFIPO, VWA, D8S1179, TPOX, FGA, D3S1358, D21S11, D18S51 and D5S818) routinely used in forensic analysis, for delineating population relationships among seven human populations representing the two major geographic groups, namely the southern and northern Chinese. The resulting single topology revealed pronounced geographic and population partitioning, consistent with the differences in geographic location, languages and eating habits. These findings suggest that forensic STR loci might be particularly powerful tools in providing the necessary fine resolution for reconstructing recent human evolutionary history.

Short-tandem repeat analysis in seven Chinese regional populations

In the present study, we investigated the application of 13 short tandem repeat (STR) loci (D13S317, D7S820, TH01, D16S539, CSFIPO, VWA, D8S1179, TPOX, FGA, D3S1358, D21S11, D18S51 and D5S818) routinely used in forensic analysis, for delineating population relationships among seven human populations representing the two major geographic groups, namely the southern and northern Chinese. The resulting single topology revealed pronounced geographic and population partitioning, consistent with the differences in geographic location, languages and eating habits. These findings suggest that forensic STR loci might be particularly powerful tools in providing the necessary fine resolution for reconstructing recent human evolutionary history.