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Objective:To observe the efficacy and safety of ultra photon intense pulsed light combined with hydroquinone cream for the treatment of chloasma.Methods:From January 2020 to October 2022, a total of 30 patients with chloasma treated in the Department of Dermatology, Huazhong University of Science and Technology Union Shenzhen Hospital, ranged from 28 to 54 years old with an average age of 39 years, were randomly divided into three groups with 10 patients in each group: combined treatment group was treated with ultra photon intense pulsed light combined with hydroquinone cream; ultra photon intense pulsed light group was treated with ultra photon intense pulsed light alone; hydroquinone group was treated with hydroquinone cream alone. The efficacy and safety of the three groups were compared after four months of treatment.Results:After the treatment, 10 cases were effective in the combined treatment group, 5 cases were effective in the ultra photon intense pulsed light group and 2 cases were effective in the hydroquinone group. The total effective rate of the combined treatment group was significantly better than that of the ultra photon intense pulsed light group and the hydroquinone group, with statistical significance ( P<0.05). The average melasma area severity index score of the three groups after treatment was significantly decreased compared with that before treatment respectively ( P<0.05), and the average melasma area severity index score of the combined treatment group after treatment was significantly lower than that of hydroquinone group, with statistical significance ( P<0.05). No serious adverse reactions were observed in all the patients. Conclusions:Ultra photon intense pulsed light and hydroquinone cream can improve chloasma alone, but ultra photon intense pulsed light combined with hydroquinone cream has better therapeutic effect.
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Objective@#To evaluate the effects of incretin-based therapies on body weight as the primary outcome, as well as on body mass index (BMI) and waist circumference (WC) as secondary outcomes.@*Methods@#Databases including Medline, Embase, the Cochrane Library, and clinicaltrials.gov (www.clinicaltrials.gov) were searched for randomized controlled trials (RCTs). Standard pairwise meta-analysis and network meta-analysis (NMA) were both carried out. The risk of bias (ROB) tool recommended by the Cochrane handbook was used to assess the quality of studies. Subgroup analysis, sensitivity analysis, meta-regression, and quality evaluation based on the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) were also performed.@*Results@#A total of 292 trials were included in this study. Compared with placebo, dipeptidyl-peptidase IV inhibitors (DPP-4Is) increased weight slightly by 0.31 kg [95% confidence interval ( ): 0.05, 0.58] and had negligible effects on BMI and WC. Compared with placebo, glucagon-like peptide-1 receptor agonists (GLP-1 RAs) lowered weight, BMI, and WC by -1.34 kg (95% : -1.60, -1.09), -1.10 kg/m (95% : -1.42, -0.78), and -1.28 cm (95% : -1.69, -0.86), respectively.@*Conclusion@#GLP-1 RAs were more effective than DPP-4Is in lowering the three indicators. Overall, the effects of GLP-1 RAs on weight, BMI, and WC were favorable.
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The China Food and Drug Administration (CFDA) modulated the Drug Registration Regulation at 2016.In this article,the registration classification of chemical drug was analyzed,and the definition,cormotation and technical standard of new drugs and generic drugs were compared.Compared with the 2007 version of regulations,obvious changes have happened,the scope of new drugs has been narrowed,and the definition is more strict and accurate,the scope of generic drugs has been expanded.The new regulation keeps the same evaluation standards with the ICH,FDA and EMA.Regulatory changes have a profound impact on the medical research and development:promoting the reformulation of domestic pharmaceutical market,encouraging R&D and innovation in enterprises and accelerating the pace towards the international market.
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Objective To develop a murine model for infection by Cladosporium carrioni. Methods A total of 72 ICR mice were equally divided into 4 groups, group A (healthy mice inoculated by C. Carrioni suspension of 1 × 108 cfu conidia mL-1, group B (immune-suppressed mice inoculated by C. Carrioni sus pension of 1 × 108 cfu conidia mL-1), group C (immune-suppressed mice inoculated by C. Carrioni suspen-sion of 1 × 106 cfu conidia mL-1), group D (healthy mice inoculated by sodium chloride solution). C. Car-rioni suspension or sodium chloride solution was subcutaneously inoculated into foot pads of mice. On day 7, 30 and 60 after inoculation, 6 mice were killed in each group followed by the measurement of thickness of foot pads, pathology and mycology of skin samples taken from foot pads. Results In group A, B and C, there were swelling, blackening, ulceration and crusts at the inoculation site of all mice, with a morbidity of 100%. The thickness of foot pads in group A on day 30 was significantly higher than that on day 7 (2.40 ± 0.45 mm vs 2.85 ± 0.47 mm, P < 0.05), but lower than that on day 60 (1.64 ± 0.13 ram, P < 0.05). In group B, increased thickness of foot pads was observed on day 30 compared with that on day 7 and day 60 (2.19 ± 0.27 mm vs 1.80 ± 0.21 mm and 1.86 + 0.22 mm, respectively, both P < 0.05), which was the case with group C (1.98 ± 0.06 nun vs 1.51 ± 0.11 mm and 1.82 ± 0.09 mm, respectively, both P < 0.05). No significant changes occurred to the thickness of foot pads in group D from day 7 to day 60 (P > 0.05). Pathological changes in group A, B and C included necrosis, abscess and chronic granuloma formation; dark brown sclerotic bodies were observed on HE and PAS staining as well as on direct microscopy; cultures of tissue samples grew Cladosporium carrionii. The mice in group D remained uninfected. Conclusion Mouse model for chromoblastomycosis may be established by subcutaneous inoculation of Cladosporium carrionii suspension into foot pads of healthy or immuno-suppressed mice.
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Objective To develop a murine model of chromomycosis by using Cladosporium carrioni and explore the pathogenicity of Cladosporium carrio nii in mice. Methods The suspension of Cladosporium carrioni was inoculated to two groups of mice, the immunocompetent mice and the immunosuppressed mice, b y intraperitoneal route using 1 ml inoculum containing 108 conidia/mL. All mice were sacrificed 30 days after inoculation, and then macroscopic examination, his topathology and fungal culture were performed. Results The morbidity in both g roups was 100% according to the dark brown hyphae and sclerotic bodies found in histopathologic examination and fungal culture. Macroscopic examination found th at the adhesion among the internal organs in immunocompetent mice was more sever e than that in immunosuppressed mice. Histopathologic sections showed that necro sis and inflammatory infiltration in immunocompetent mice were more obvious than those in immunosuppressed mice. Conclusions The virulence of Cladosporium car rionii strains is strong enough to construct experimental murine model of chromo mycosis, and animal passage of the strains is unnecessary. This murine model cou ld be used to study the pathogenesis of chromomycosis.
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<p><b>AIM AND METHODS</b>To investigate the role of mitogen-activated protein kinase phosphatase-1 (MKP-1) in the regulation of cells proliferation, the expression of MKP-1 and extracellular signal-regulated kinase-1 (ERK-1) in heart and aorta of spontaneous hypertensive rat (SHR) and WKY were studied. We also investigated the effect of MKP-1 genes,which were transfected into vascular smooth muscle cells (VSMC) using the classical calcium phosphate coprecipitation technique, on the incorporation of 3H-TdR in VSMC stimulated by angiotensin II (Ang II).</p><p><b>RESULTS</b>(1) Compared with that of WKY, MKP-1 expression in heart and aorta were significantly decreased by 53% (P < 0.01) and 45% (P < 0.01) in SHR, respectively. While the expression of ERK-1 in heart and aorta of SHR were higher than that of WKY (P < 0.01). The ratio of ERK-1/MKP-1 in heart and aorta of SHR were significantly higher than that of WKY. (2) 3H-TdR incorporation in VSMC stimulated by Ang II (10(-7) mol/L) was increased by 207% (P < 0.01), compared with control group. In the transfected cells with wild MKP-1 gene, Ang II-induced incorporation of 3H-TdR lowered 63%, compared with untransfected cells (P < 0.05). There were no marked inhibitive role between mutant MKP-1-transfected cells and blank vector-transfected cells in response to Ang II, compared with Ang II group (P > 0.05).</p><p><b>CONCLUSION</b>These results showed that the expression of ERK-1 in heart and aorta isolated from SHR, which stimulated proliferation and hypertrophy of cells, is higher than that of MKP-1 which dephosphorylates and inactivated ERK-1. In addition, MKP-1 significantly inhibits Ang II-stimulated proliferation of VSMC.</p>