Comparison of epidemiological and clinical characteristics of COVID-19 patients with and without Wuhan exposure / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Background: A novel coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), first identified in Wuhan, China, has been rapidly spreading around the world. This study investigates the epidemiological and clinical characteristics of coronavirus disease 2019 (COVID-19) patients in Zhejiang Province who did or did not have a history of Wuhan exposure. Methods: We collected data from medical records of confirmed COVID-19 patients in Zhejiang Province from Jan. 17 to Feb. 7, 2020 and analyzed epidemiological, clinical, and treatment data of those with and without recorded recent exposure in Wuhan. Results: Patients in the control group were older than those in the exposure group ((48.19±16.13) years vs. (43.47±13.12) years, P<0.001), and more were over 65 years old (15.95% control vs. 5.60% exposure, P<0.001). The rate of clustered onset was also significantly higher in the control group than in the exposure group (31.39% vs. 18.66%, P<0.001). The symptom of a sore throat in patients in the exposure group was significantly higher than that in the control group (17.30% vs. 10.89%, P=0.01); however, headache in the exposure group was significantly lower than that in the control group (6.87% vs. 12.15%, P=0.015). More patients in the exposure group had a significantly lower level of lactate dehydrogenase (LDH) and aspartate aminotransferase (AST) than those in the control group. There was no significant difference in any degree of COVID-19 including mild, severe, and critical between the two groups. Conclusions: From the perspective of epidemiological and clinical characteristics, there was no significant difference between COVID-19 patients with and without Wuhan exposure history.

Comparison of epidemiological and clinical characteristics of COVID-19 patients with and without Wuhan exposure history in Zhejiang Province, China / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

BACKGROUND@#A novel coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), first identified in Wuhan, China, has been rapidly spreading around the world. This study investigates the epidemiological and clinical characteristics of coronavirus disease 2019 (COVID-19) patients in Zhejiang Province who did or did not have a history of Wuhan exposure.@*METHODS@#We collected data from medical records of confirmed COVID-19 patients in Zhejiang Province from Jan. 17 to Feb. 7, 2020 and analyzed epidemiological, clinical, and treatment data of those with and without recorded recent exposure in Wuhan.@*RESULTS@#Patients in the control group were older than those in the exposure group ((48.19±16.13) years vs. (43.47±13.12) years, P<0.001), and more were over 65 years old (15.95% control vs. 5.60% exposure, P<0.001). The rate of clustered onset was also significantly higher in the control group than in the exposure group (31.39% vs. 18.66%, P<0.001). The symptom of a sore throat in patients in the exposure group was significantly higher than that in the control group (17.30% vs. 10.89%, P=0.01); however, headache in the exposure group was significantly lower than that in the control group (6.87% vs. 12.15%, P=0.015). More patients in the exposure group had a significantly lower level of lactate dehydrogenase (LDH) and aspartate aminotransferase (AST) than those in the control group. There was no significant difference in any degree of COVID-19 including mild, severe, and critical between the two groups.@*CONCLUSIONS@#From the perspective of epidemiological and clinical characteristics, there was no significant difference between COVID-19 patients with and without Wuhan exposure history.

Efficacy and Safety of Tenofovir Disoproxil Treatment for Chronic Hepatitis B Patients with Genotypic Resistance to Other Nucleoside Analogues: A Prospective Study / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Tenofovir disoproxil (TDF) is a promising salvage therapy for patients with chronic hepatitis B (CHB) who failed regimens of other nucleoside analogues (NAs). In this study, we aimed to investigate the clinical efficacy and safety of TDF monotherapy in Chinese CHB patients with genotypic resistance.</p><p><b>METHODS</b>A total of 33 CHB patients who had failed treatment with other NAs and had genotypic resistance were switched to TDF monotherapy for 48 weeks. Patients' demographic data (age, sex, history of hepatitis B virus [HBV] therapy), laboratory testing results (hepatitis B e antigen [HBeAg] status, HBV DNA levels, alanine aminotransferase [ALT] levels, serum creatinine, urinary protein, genotypic assay), clinical symptoms, and liver color ultrasound examinations were collected for evaluation at day 0 (baseline) and the 12th, 24th, 36th, and 48th weeks after initiating treatment. Statistical analyses were carried out using rank sum test or rank correlation.</p><p><b>RESULTS</b>With regard to efficacy, the study found that all patients who switched to TDF monotherapy had undetectable HBV DNA levels after 48 weeks. In addition, patients with lower baseline HBV DNA levels realized earlier virological undetectability (rs = 0.39, P = 0.030). ALT levels were normal in 30 of 33 patients (91%). HBeAg negative conversion occurred in 7 of 25 patients (28%), among whom HBeAg seroconversion (12%) and HBeAg seroclearance (16%) occurred. The time of complete virological response was significantly affected by the number of resistance loci (rs = 0.36, P = 0.040). Concerning safety, the study found that no adverse events were observed during the 48 weeks.</p><p><b>CONCLUSION</b>TDF monotherapy is an effective and safe salvage treatment for CHB patients who are resistant to other NAs.</p>

Treatment of cryptococcal meningitis with low-dose amphotericin B and flucytosine / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Amphotericin B (0.7 mg/kg) with flucytosine is the standard treatment for cryptococcal meningitis. However, the long treatment course can induce adverse reactions in patients; therefore, reducing the dose may decrease such reactions. We performed a retrospective analysis of treatment effects and adverse reactions when amphotericin B (0.4 mg/kg or 0.7 mg/kg per day) and flucytosine were used together to treat HIV-negative patients with cryptococcal meningitis.</p><p><b>METHODS</b>Retrospective analysis was conducted on inpatients at the First Affiliated Hospital, College of Medicine, Zhejiang University (January 2005 to December 2009). Low- or high-dose amphotericin B (0.4 or 0.7 mg/kg per day, respectively) plus flucytosine was used. The negative conversion rate of Cryptococcus in the cerebrospinal fluid (CSF), patient mortality, and the incidence of side effects for the two groups (low- vs. high-dose) were compared immediately after treatment and 2 and 10 weeks later. Data were analyzed by the Student's t test, chi-square tests using SPSS 12.0 statistical software.</p><p><b>RESULTS</b>Two weeks post-treatment, Cryptococcus negative CSF rates were 78% (18/23) in the low-dose group and 87% (13/15) in the high-dose group (P = 0.28). Ten weeks post-treatment, both groups were negative. The mortality rate was 8% (2/25) in the low-dose group and 17% (3/18) in the high-dose group (P = 0.25). There was a statistically significant difference in the incidence of adverse events between the groups, 48% (12/25) and 78% (14/18) in the low- and high-dose groups, respectively (P = 0.04). Adverse events that required a change in treatment program in the low-dose group were 12% (3/25) compared to 39% (7/18) in the high-dose group (P = 0.04).</p><p><b>CONCLUSION</b>Low-dose treatment regimens were better tolerated than high-dose ones.</p>

A serum metabonomic study on the difference between alcohol- and HBV-induced liver cirrhosis by ultraperformance liquid chromatography coupled to mass spectrometry plus quadrupole time-of-flight mass spectrometry / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Liver cirrhosis is the fatal consequence of chronic hepatitis, making early diagnosis of liver cirrhosis critical. Liver biopsy is still the standard diagnostic method for liver cirrhosis, although its use in a broad population with alcoholism or hepatitis B virus (HBV) infection remains difficult. In this study, we used a metabonomic approach to detect potential biomarkers for early diagnosis of liver cirrhosis.</p><p><b>METHODS</b>Serum specimens were collected prospectively from normal control subjects (n = 22) and patients with alcoholic cirrhosis (n = 18) or HBV-induced cirrhosis (n = 19). The serum metabonome was analyzed using ultraperformance liquid chromatography (LC)/time-of-flight mass spectrometry (MS) integrated with chemometrics. The acquired LC-MS data were normalized and processed using principal component analysis (PCA) and partial least squares discrimination analysis (PLS-DA).</p><p><b>RESULTS</b>Significant differences in the metabonomics among the three groups were observed. Lysophosphatidyl cholines (LPCs) (LPC C16:0, LPC C18:0, LPC C18:2, LPC C18:3, LPC C20:3, LPC C20:5) were decreased in the serum of patients with hepatic cirrhosis, whereas bile acids (glycocholic acid, glycochenodeoxycholic acid), hypoxanthine, and stearamide were increased in the serum of patients with hepatic cirrhosis. These metabolites are considered "common" biomarkers for hepatic cirrhosis. Oleamide and myristamide were increased in the serum of patients with alcoholic cirrhosis but decreased in those with HBV-induced cirrhosis. These could be specific biomarkers for differential diagnosis between alcohol- and HBV-induced hepatic cirrhosis.</p><p><b>CONCLUSIONS</b>There are significant metabonomic differences between alcohol- and HBV-induced liver cirrhosis. Metabonomics is a top-down systems biology tool for conducting research on clinical problems.</p>