Hygroscopicity research has long been a key focus and hot topic in Chinese materia medica（CMM）. Elucidating hygroscopic mechanisms plays a vital role in formulation design， process optimization， and storage condition selection. Hygroscopic models serve as essential tools for characterizing CMM hygroscopic mechanisms， with various types available. The double exponential model is a kinetic mathematical model constructed based on the law of conservation of energy and Fick's first law of diffusion， tailored to the physical properties of CMM extracts. In recent years， this model has been extensively applied to simulate the dynamic moisture absorption behavior of CMM extracts and solid dosage forms under varying humidity conditions. It has revealed the correlation between moisture absorption kinetic parameters and material properties， offering a new perspective for characterizing the moisture uptake behavior of CMM. This paper systematically reviews the application progress of this model in the field of CMM， analyzes its advantages， disadvantages， and challenges in this domain， and explores its potential application trends in other fields. It aims to provide references for elucidating the moisture absorption mechanisms of CMM and researching moisture-proofing technologies， while also offering insights for its broader application in food and polymer materials.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Objective:To investigate the clinical distribution characteristics changes in antimicrobial resistance, and carbapenemase resistance genes of Klebsiella pneumoniae isolated from children in Chongqing region during the period of January 2019 to December 2024, providing a basis for the rational use of antibiotics and the prevention and control of nosocomial infections.Methods:An observational study was conducted to retrospectively analyze 5 020 Klebsiella pneumoniae (KP) isolates detected in four hospitals of the Southwest Pediatric Laboratory Specialty Alliance. Antimicrobial susceptibility testing was performed by the minimum inhibitory concentration method combined with the disk diffusion method. Results were interpreted according to the 2024 Clinical and Laboratory Standards Institute (CLSI) standards. Carbapenemase resistance genes were detected by polymerase chain reaction (PCR) combined with Sanger sequencing. WHONET 5.6 was used for resistance analysis and SPSS 19.0 for statistical analysis. The chi-square test was used to assess trends in resistance rates, ESBL detection rates, and resistance rates of different CRKP carbapenemase genotypes from 2019 to 2024. Statistical significance was confirmed if the two-tailed P-value was <0.05. Results:A total of 5 020 strains were isolated, with a detection rate of 5.1% (5 020/99 063). The majority were from sputum (59.2%, 2 970/5 020), followed by pus (17.1%, 857), urine (9.7%, 487), venous blood (6.5%, 326), secretions (2.6%, 130), and other specimens (5.0%, 250).The lowest resistance rate was to amikacin (3.8%), followed by levofloxacin (10.9%), imipenem (19.1%), and meropenem (19.9%). Resistance rates to cefoperazone/sulbactam ( χ2=9.982 0, P=0.001 6), piperacillin/tazobactam ( χ2=10.110 0, P=0.001 5), ceftazidime ( χ2=3.849 0, P=0.049 8), cefotaxime ( χ2=7.605 0, P=0.005 8), cefepime ( χ2=13.510 0, P=0.000 2), aztreonam ( χ2=6.457 0, P=0.011 1), imipenem ( χ2=4.672 0, P=0.030 7), and levofloxacin ( χ2=7.555 0, P=0.006 0) showed an annual increasing trend. The main carbapenemase genes were blaNDM-5 (42.2%, 127/301), blaNDM-1 (33.9%, 102/301), and blaKPC-2 (17.3%, 52/301). Patients with KPC-2-producing strains (median age, 240 days) were older than those with NDM-1/NDM-5-producing strains (median age, 40 days) ( χ2=22.620 0, P<0.000 1). In neonatal wards, the detection rate of NDM-KP was higher than that of KPC-KP (64.6%, 148/229 vs. 26.9%, 14/52, χ2=24.680 0, P<0.000 1), whereas in ICUs, it was lower (6.1%, 14/229 vs. 26.9%, 14/52, χ2=20.450 0, P<0.000 1). Conclusion:In Chongqing region, the isolation rate of K. pneumoniae from sputum was the highest with most cases from neonatal wards. Resistance to carbapenems showed an upward trend. BlaNDM-5 was the predominant genotype in pediatric CRKP. Patients with KPC-KP were older than those with NDM-KP. NDM-KP predominated in neonatal wards, while KPC-KP predominated in ICUs, with KPC-KP showing higher antimicrobial resistance.

Objective:To analyze the variation trends in the levels of apolipoprotein B (ApoB), the ratio of apolipoprotein B to low-density lipoprotein cholesterol (ApoB/LDL-C), and non-high density lipoprotein cholesterol (non-HDL-C) among patients and individuals undergoing physical examinations at Zhongshan Hospital, Fudan University from 2014 to 2024.Methods:Data on ApoB, LDL-C, and nonHDL-C levels were collected from individuals (the overall population) who visited or underwent physical examinations at our hospital from January 1, 2014 to December 31, 2024, as well as from individuals (the fixed population) who were tested annually over the 11-year period. The Mann-Kendall test combined with Sen slope estimation was used to analyze the trends. The abnormal rates of ApoB and non-HDL-C in both the overall and fixed populations, as well as the changes in the first and last test results over the 11 years in the fixed population, were also analyzed.Results:The overall population totaled 1 679 440 cases, aged 57 (45, 67) years, and 718 738 cases (42.8%) were female, of which 1 250 234 cases (74.4%) were in the patient population and 429 206 cases (25.6%) were in the health check population. The fixed population of 1 560 cases was 56 (45, 65) years old and 655 cases (42.0%) were female, of which 1 044 cases (66.9%) were in the patient population and 516 cases (33.1%) in the health check population. Between 2014 and 2024, the overall population ApoB decreased from 0.842 g/L to 0.822 g/L (Sen slope -0.001 g·L -1·year -1, P=0.01), the abnormality rate decreased from 24.70% to 22.03% (Sen slope -0.50%/year, P=0.06), and 69.4% of the fixed population showed no change in the subgroups of initial and final tests. ApoB/LDL-C increased from 0.824 to 0.868 (Sen slope -0.003/year, P=0.72). Non-HDL-C decreased from 3.46 mmol/L to 3.32 mmol/L (Sen slope 0.018 mmol·L -1·year -1, P=0.35), with a statistically significant upward trend since 2019 (Sen slope 0.037 mmol·L -1·year -1, P=0.008), and the anomaly rate decreased from 24.3% to 22.7% (Sen slope 0.55%/year, P=0.64), with a statistically significant upward trend since 2019 (Sen slope 1.53%/year, P=0.014), and no change in the grouping of the first and last tests in 75.0% of the fixed population. The trends in the above items were consistent between the overall population and the fixed population. 20-<40 year olds had the most significant upward trend in non-HDL-C along with the least significant downward trend in ApoB/LDL-C and ApoB. Conclusion:ApoB in the overall and fixed populations from 2014-2024 in a Shanghai hospital showed a decreasing trend, and non-HDL-C and abnormality rates showed an increasing trend from 2019 onwards.

Objective:To analyze the trend of lipid changes in patients and individuals undergoing physical examination at Zhongshan Hospital of Fudan University from 2014 to 2024, providing evidence for the formulation of cardiovascular disease prevention and control strategies.Methods:A total of 2 657 835 individuals (general population) who underwent lipid testing during medical visits or physical examinations at Zhongshan Hospital of Fudan University from January 1, 2014, to December 31, 2024, were selected. Among them, 6 234 individuals who were tested consecutively for 11 years were considered as the fixed population. Lipid levels were analyzed across different genders and age groups. Total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were analyzed. The trends in lipid changes and the abnormal rates of TC (≥5.18 mmol/L) and LDL-C (≥3.40 mmol/L) in both the general and fixed populations were statistically analyzed.Results:The median age of the general population was 53 (41, 63) years, with 1 498 533 males (56.4%); 1 149 662 individuals (43.3%) were from the physical examination group. The median age of the fixed population was 52 (39, 62) years, with 3 262 males (52.3%); 2 955 individuals (47.4%) were from the physical examination group. Over an 11-year period, the logarithmically transformed TG (lnTG) in the general population slightly increased from 1.35 mmol/L to 1.36 mmol/L (Sen slope=0.007 mmol·L -1·year -1; S=27, P=0.043). Although there were fluctuations in TC, LDL-C, and HDL-C, the trends were not statistically significant ( P>0.05). However, in the subset of the population undergoing regular health check-ups, TC showed a steady increase over time ( S=27, P=0.043). Within a fixed population over the same 11-year period, there were no statistically significant changes in lipid profiles ( P>0.05). Nevertheless, in the fixed subset undergoing regular health check-ups, both TC and lnTG exhibited an upward trend (TC: S=27, P=0.043; lnTG: S=31, P=0.020), while in the fixed subset seeking medical attention, TC and LDL-C demonstrated a downward trend (TC: S=-31, P=0.020; LDL-C: S=-27, P=0.043). Trends in lipid profiles varied among different genders and age groups. Specifically, both men and women aged 20-<40 years old showed an increase in TC, abnormal TC rates, and abnormal LDL-C rates ( P<0.05). Conversely, in the fixed population, women over 60 years old exhibited a decrease in TC, abnormal TC rates, and abnormal LDL-C rates ( P<0.05). Conclusion:During the period from 2014 to 2024, there were slight fluctuations in the average lipid levels of both the general and fixed populations. Notably, TC, abnormal TC rates, and abnormal LDL-C rates increased among men and women aged 20-<40 years old, while these parameters decreased among women over 60 years old in the fixed population.

Primary aldosteronism(PA)is an important cause of secondary hypertension,and adrenal vein sampling(AVS),as the gold standard for identifying the dominant side in PA,plays a critical role in guiding subsequent therapeutic strategies.AVS is an invasive procedure that is not yet widely available in China.To promote the popularization and standardization of AVS,the Chinese Society of Hypertension(Chinese Research Hospital Association)and the Group of Interventional Diagnosis and Treatment of Hypertension(China International Exchange and Promotive Association for Medical and Health Care)have summarized domestic and foreign evidence and the operational experience of many experts.This consensus has summarized and updated the significance,indications,pre-procedural preparation,procedural steps and key points,prevention and management of complications,and result interpretation of AVS.This consensus provides comprehensive and clinically relevant guidance for the clinical practice and development of AVS,effectively promoting its popularization and standardization.

This study was aimed at identifying the pathogenic bacteria responsible for the death of a young tiger at the Fujian Meihua Mountain South China Tiger Breeding Research Institute.Tissue samples from the lungs,liver,and intestines of the deceased tiger were collected,and the bacteria were cultured inasterile environment.The bacterial strains were characterized according to their morphological and molecular biological properties,including assessment of virulence genes and antibiotic resistance genes,mouse lethality tests,and antibiotic susceptibility evaluations.A predominant bacterial strain isolated from the liver of the deceased tiger was identified as enterotoxigenic Escherichia coli(ETEC)strain Tiger22513F.Phylogenetic analysis of the 16S rRNA gene revealed that the Tiger22513F strain exhibited close genetic similarity to the reference strain ETEC(MF919609.1),with 99.9%nucleotide similarity,and resided on the same evolutionary branch.The Tiger22513F strain contained 11 antibiotic resistance genes(tetA,sul1,sul3,cmlA,floR,blaTEM,blaSHV,blaCMY-2,qnrA,qnrS,and qnrD)along with five virulence genes(VT1,fyuA,tsh,iucD,and ST).Mouse lethality tests indicated significant pathogenicity toward mice,affecting primarily the lungs,liver,and intestines.Antibiotic susceptibility testing demonstrated that this strain exhibited resistance to various classes of beta-lactam antibiotics,as well as quinolones and aminoglycosides.This investigation successfully isolated a multi-drug resistant enterotoxigenic Escherichia coli strain with pronounced pathogenicity from the liver of a deceased tiger;thus providing valuable scientific insights for clinical diagnosis,as well as prevention and control measures,against ETEC infections in South China tigers.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.

Objective:To analyze the variation trends in the levels of apolipoprotein B (ApoB), the ratio of apolipoprotein B to low-density lipoprotein cholesterol (ApoB/LDL-C), and non-high density lipoprotein cholesterol (non-HDL-C) among patients and individuals undergoing physical examinations at Zhongshan Hospital, Fudan University from 2014 to 2024.Methods:Data on ApoB, LDL-C, and nonHDL-C levels were collected from individuals (the overall population) who visited or underwent physical examinations at our hospital from January 1, 2014 to December 31, 2024, as well as from individuals (the fixed population) who were tested annually over the 11-year period. The Mann-Kendall test combined with Sen slope estimation was used to analyze the trends. The abnormal rates of ApoB and non-HDL-C in both the overall and fixed populations, as well as the changes in the first and last test results over the 11 years in the fixed population, were also analyzed.Results:The overall population totaled 1 679 440 cases, aged 57 (45, 67) years, and 718 738 cases (42.8%) were female, of which 1 250 234 cases (74.4%) were in the patient population and 429 206 cases (25.6%) were in the health check population. The fixed population of 1 560 cases was 56 (45, 65) years old and 655 cases (42.0%) were female, of which 1 044 cases (66.9%) were in the patient population and 516 cases (33.1%) in the health check population. Between 2014 and 2024, the overall population ApoB decreased from 0.842 g/L to 0.822 g/L (Sen slope -0.001 g·L -1·year -1, P=0.01), the abnormality rate decreased from 24.70% to 22.03% (Sen slope -0.50%/year, P=0.06), and 69.4% of the fixed population showed no change in the subgroups of initial and final tests. ApoB/LDL-C increased from 0.824 to 0.868 (Sen slope -0.003/year, P=0.72). Non-HDL-C decreased from 3.46 mmol/L to 3.32 mmol/L (Sen slope 0.018 mmol·L -1·year -1, P=0.35), with a statistically significant upward trend since 2019 (Sen slope 0.037 mmol·L -1·year -1, P=0.008), and the anomaly rate decreased from 24.3% to 22.7% (Sen slope 0.55%/year, P=0.64), with a statistically significant upward trend since 2019 (Sen slope 1.53%/year, P=0.014), and no change in the grouping of the first and last tests in 75.0% of the fixed population. The trends in the above items were consistent between the overall population and the fixed population. 20-<40 year olds had the most significant upward trend in non-HDL-C along with the least significant downward trend in ApoB/LDL-C and ApoB. Conclusion:ApoB in the overall and fixed populations from 2014-2024 in a Shanghai hospital showed a decreasing trend, and non-HDL-C and abnormality rates showed an increasing trend from 2019 onwards.

Objective:To analyze the trend of lipid changes in patients and individuals undergoing physical examination at Zhongshan Hospital of Fudan University from 2014 to 2024, providing evidence for the formulation of cardiovascular disease prevention and control strategies.Methods:A total of 2 657 835 individuals (general population) who underwent lipid testing during medical visits or physical examinations at Zhongshan Hospital of Fudan University from January 1, 2014, to December 31, 2024, were selected. Among them, 6 234 individuals who were tested consecutively for 11 years were considered as the fixed population. Lipid levels were analyzed across different genders and age groups. Total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were analyzed. The trends in lipid changes and the abnormal rates of TC (≥5.18 mmol/L) and LDL-C (≥3.40 mmol/L) in both the general and fixed populations were statistically analyzed.Results:The median age of the general population was 53 (41, 63) years, with 1 498 533 males (56.4%); 1 149 662 individuals (43.3%) were from the physical examination group. The median age of the fixed population was 52 (39, 62) years, with 3 262 males (52.3%); 2 955 individuals (47.4%) were from the physical examination group. Over an 11-year period, the logarithmically transformed TG (lnTG) in the general population slightly increased from 1.35 mmol/L to 1.36 mmol/L (Sen slope=0.007 mmol·L -1·year -1; S=27, P=0.043). Although there were fluctuations in TC, LDL-C, and HDL-C, the trends were not statistically significant ( P>0.05). However, in the subset of the population undergoing regular health check-ups, TC showed a steady increase over time ( S=27, P=0.043). Within a fixed population over the same 11-year period, there were no statistically significant changes in lipid profiles ( P>0.05). Nevertheless, in the fixed subset undergoing regular health check-ups, both TC and lnTG exhibited an upward trend (TC: S=27, P=0.043; lnTG: S=31, P=0.020), while in the fixed subset seeking medical attention, TC and LDL-C demonstrated a downward trend (TC: S=-31, P=0.020; LDL-C: S=-27, P=0.043). Trends in lipid profiles varied among different genders and age groups. Specifically, both men and women aged 20-<40 years old showed an increase in TC, abnormal TC rates, and abnormal LDL-C rates ( P<0.05). Conversely, in the fixed population, women over 60 years old exhibited a decrease in TC, abnormal TC rates, and abnormal LDL-C rates ( P<0.05). Conclusion:During the period from 2014 to 2024, there were slight fluctuations in the average lipid levels of both the general and fixed populations. Notably, TC, abnormal TC rates, and abnormal LDL-C rates increased among men and women aged 20-<40 years old, while these parameters decreased among women over 60 years old in the fixed population.