Naturally Occurring Cleistanthane Diterpenoids and Their Biological Activities.

Cleistanthane diterpenoids, an important class of active natural products, are characterized by a 6/6/6 tricycle system and contain a variety of functional groups. Studies have shown that cleistanthane diterpenoids are widespread in various higher plants and endophytic fungi and exhibit a wide range of biological activities. This review provides extensive coverage of naturally occurring cleistanthane diterpenoids discovered from 1973 to 2024 and sheds light on the sources, structures, biological effects, and primary molecular mechanisms of them and provides a useful reference for the further study and development of these compounds.

Jatrophane diterpenoids from Jatropha curcas with multidrug resistance reversal activity.

Nine jatrophane diterpenoids, including six previously undescribed compounds, were extracted and purified from whole plants of Jatropha curcas L. Their structures including absolute configurations were characterized by spectroscopic, quantum chemical Nuclear Magnetic Resonance Spectroscopy, Electronic Circular Dichroism calculation, and Single Crystal X-Ray Diffraction methods. These compounds were evaluated for their ability to reverse multidrug resistance.

Comparative Study on the Satisfaction of Healthcare Service Providers with the Synergistic Development of Rural Healthcare Systems in China: Medical Alliance Counties vs. Non-Medical Alliance Counties.

Introduction: This study aimed to explore whether the establishment of county medical alliances can improve satisfaction with the vertical integration of healthcare systems among rural medical and healthcare service provider managers and service providers. Our study also sought to provide recommendations for the sustainable development of vertical integration in healthcare systems.

Methods: A semi-structured interview with 30 healthcare service providers was employed in this research, and Nvivo software was utilized to analyze factors that influence vertical integration.

Two Novel Diterpenoid Alkaloids from Aconitum Pendulum.

Two previously uncharacterized compounds, an aconitine-type C-diterpenoid alkaloid (1) and a napelline-type diterpenoid alkaloid C-diterpenoid alkaloid (2), as well as ten known compounds (3-12), were isolated from Aconitum pendulum. Their structures were elucidated based on spectroscopic data, including 1D and 2D NMR, IR, HR-ESI-MS, and single-crystal X-ray diffraction analysis. The anti-insecticidal activities of these compounds were evaluated by contact toxicity tests against two-spotted spider mites, and compounds 1, 2, and 9 showed moderate contact toxicity, with LC values of 0.

Synthesis and discovery of Baylis-Hillman adducts as potent and selective thioredoxin reductase inhibitors for cancer treatment.

The selenoprotein thioredoxin reductase (TrxR) is of paramount importance in maintaining cellular redox homeostasis, and aberrant upregulation of TrxR is frequently observed in various cancers due to their elevated oxidative stress in cells. Thus, it seems promising and feasible to target the ablation of intracellular TrxR for the treatment of cancers. We report herein the design and synthesis of a series of Baylis-Hillman adducts, and identified a typical adduct that possesses the superior cytotoxicity against HepG2 cells over other types of cancer cells.

Jatrolignans C and D: New Neolignan Epimers from .

Two new neolignans jatrolignans, C () and D (), a pair of epimers, were isolated from the whole plants of L. (Euphorbiaceae). Their structures were determined with HRESIMS, IR, and NMR data analysis, and electronic circular dichroism (ECD) experiments via a comparison of the experimental and the calculated ECD spectra.

Structural characterization of lignin and lignin-carbohydrate complex (LCC) of sesame hull.

In the present study, lignin and lignin-carbohydrate complex (LCC) constituting the cell wall structure of sesame hulls were investigated to explore novel techniques of dehulling. Milled wood lignin (MWL), Björkman LCC, and acid-soluble LCC (LCC-AcOH) were extracted from sesame hulls and characterized by carbohydrate composition analysis, molecular weight analysis, UV-vis spectroscopy, FT-IR, thermal analysis, Py-GC/MS, 2D HSQC NMR, and P NMR. The results showed that rhamnose accounted for the largest proportion of the lignin and LCC fractions, followed by glucose.

Cytotoxic cardenolides from Calotropis gigantea.

Sixteen cardiac glycosides, including five previously undescribed compounds, were extracted and purified from whole plants of Calotropis gigantea (L.). Spectroscopic data and electronic circular dichroism (ECD) analyses were used to determine their structures.

[Epidemiological investigation of blood transfusion - induced malaria caused by an imported case with infection].

Objective: To analyze a case infected with due to blood transfusion in Taizhou City, so as to provide scientific evidence for malaria control.

Methods: The epidemiological investigation of a case with malaria was conducted, and the blood donors'blood samples were collected and detected in laboratory to identify the origin of the infection.

Results: Microscopy detected in the blood samples from a 64-year-old male inpatient with nephropathy, and malaria was diagnosed.

[Progress on wheat A genome illustration and its evolutional analysis].

Wheat is one of the main food crops and widely grown in the world. It feeds more than 35% of the world's population. Obtaining high-quality genome sequences of wheat is important for its basic and breeding researches.

[Analysis on detection of enterovirus nucleotides in feces samples of hand-foot-mouth disease patients after recovery].

Objective: To explore the duration of enterovirus (EV) nucleotides positive in feces samples of hand-foot-mouth disease (HFMD) patients after recovery.

Methods: A consecutive 6-week follow up were carried out towards 49 cases of laboratory-diagnosed HFMD patients. A total of 5 - 8 g feces sample was collected from each patient once a week.

[Liver histological changes in chronic hepatitis B patients with elevated ALT less than 2 x ULN].

Objective: To investigate the relevant factors of liver histological changes in chronic hepatitis B (CHB) patients with mildly elevated ALT and to explore the clinical values of these factors on anti-viral treatment.

Methods: A total of 152 CHB patients with mildly elevated ALT (less than 2 x ULN) who underwent liver biopsy were included in the study. Correlations between routine laboratory markers, liver histological inflammation grade and fibrosis stage were statistically assessed by Spearman correlation analysis, one-way ANOVA, area under the curve (AUC) of the receiver operating characteristic curves (ROC) and Logistic regression statistical analysis.

[Study on the quality of life and social support among people living with HIV/AIDS and their family members].

Objective: To explore the quality of life and related social support among people living with HIV/AIDS with related factors.

Methods: 331 people living with HIV/AIDS and 148 of their family members were selected using a typical sampling method. Questionnaires on general conditions, tables on history of infection, generic quality of life inventory-74 (GQOLI-74) and social support scale (SSS) were used.

[Study on the equity of rural health service in the experimental region of new rural cooperative medical scheme, Yuexi county, Anhui province].

Objective: To explore the situation of equity in health service delivery in the experimental region of new rural cooperative medical scheme (NRCMS).

Methods: A household questionnaire survey was conducted to 2112 residents in the experimental county of NRCMS in Yuexi county with a stratified-cluster sampling on the situation of health service delivery, from July 1-15,2005. Data was analyzed with Epi Info 6.