1.Discovery of fernane-type triterpenoids from Diaporthe discoidispora using genome mining and HSQC-based SMART technology.
Yajing WANG ; Yongfu LI ; Yan DONG ; Chunyan YU ; Chengwei LIU ; Chang LI ; Yi SUN ; Yuehu PEI
Chinese Journal of Natural Medicines (English Ed.) 2025;23(3):368-376
In this study, we employed a combination of genome mining and heteronuclear single quantum coherence (HSQC)-based small molecule accurate recognition technology (SMART) technology to search for fernane-type triterpenoids. Initially, potential endophytic fungi were identified through genome mining. Subsequently, fine fractions containing various fernane-type triterpenoids were selected using HSQC data collection and SMART prediction. These triterpenoids were then obtained through targeted isolation and identification. Finally, their antifungal activity was evaluated. As a result, three fernane-type triterpenoids, including two novel compounds, along with two new sesquiterpenes and four known compounds were isolated from one potential strain, Diaporthe discoidispora. Their structures were elucidated through analysis of high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) and nuclear magnetic resonance (NMR) spectroscopic data. The absolute configurations were determined using single-crystal X-ray diffraction analysis and electron capture detector (ECD) analysis. Compound 3 exhibited moderate antifungal activity against Candida albicans CMCC 98001 and Aspergillus niger.
Triterpenes/isolation & purification*
;
Antifungal Agents/isolation & purification*
;
Molecular Structure
;
Candida albicans/drug effects*
;
Ascomycota/genetics*
;
Magnetic Resonance Spectroscopy
;
Aspergillus niger/drug effects*
;
Genome, Fungal
;
Microbial Sensitivity Tests
2.Disseminated fungal infection by Nannizziopsis in a kidney transplant recipient
Jeva Cernova ; Salma Haddad ; Portia Goldsmith ; Diana Mabayoje ; Jonathan Lambourne ; Mark Melzer ; Jonathan Crook ; Yaqoob Magdi ; Conor Byrne ; Catherine Herwood
Journal of the Philippine Dermatological Society 2024;33(Suppl 1):16-17
We present a case of Nannizziopsis spp infection in an immunocompromised patient, describe clinical findings, investigation results and treatment. This rare fungal infection is reported in reptiles and humans, but not other mammals. There are only twenty case reports in medical literature to date, most in immunocompromised patients.
A 64-year-old kidney transplant recipient from urban Nigeria presented with a verrucous plaque on his dorsal left hand which has grown rapidly over the two months. He was concerned that it might represent cancer. On further examination he also had a subcutaneous fluctuant masses on his left flank and left upper arm, a fleshy mucosal plaque and a large tender fluctuant swelling over his right tibia. He was clinically well, but in the preceding months he reported haemoptysis and 7 kilograms weight loss.
Skin biopsies from multiple sites showed identical features: suppurative granulomatous inflammation and elongated elements consistent with fungal hyphae. Grocott special staining showed scattered fungal hyphae. Beta-D-glucan was raised at 441.4 pg/mL [3-6 pg/mL]. Subsequent molecular identification confirmed Nanniziopsis spp, likely to be N. guarroi. He was treated with intravenous amphotericin-B for 7 weeks and was then switched to oral posaconazole for one month with complete resolution.
Nannizziopsis is an emerging human pathogenic fungus that predominantly causes disease in immunocompromised individuals. This case highlights the importance of suspecting atypical fungal infection in immunocompromised individuals presenting with polymorphic skin lesions and the critical diagnostic role of skin biopsy and culture.
Human ; Middle Aged: 45-64 Yrs Old ; Fungal Infection ; Mycoses ; Immunosuppression ; Immunosuppression Therapy ; Sub-saharan Africa ; Africa South Of The Sahara
3.Trends in mortality due to tracheal, bronchial, and lung cancer across the BRICS: An age-period-cohort analysis based on the Global Burden of Disease Study 1990-2019.
Ruhai BAI ; Wanyue DONG ; Meng CHU ; Bian LIU ; Yan LI
Chinese Medical Journal 2024;137(23):2860-2867
BACKGROUND:
Tracheal, bronchus, and lung cancer (TBL) is a major cause of mortality and top contributor to productivity loss in large emerging economies such as the BRICS (Brazil, Russia, India, China, and South Africa). We examined the time trends of TBL mortality across the BRICS to better understand the disease burden in these countries and inform public health and healthcare resource allocation.
METHODS:
TBL mortality-related data between 1990 and 2019 were obtained from the Global Burden of Disease Study 2019 and analyzed using age-period-cohort models. Net drift (local drift) was used to describe the expected age-adjusted TBL mortality rate over time overall (each age group); the longitudinal age curve was used to reflect the age effect; the period rate ratios (RRs) were used to reflect the period effect; and the cohort RR was used to reflect the cohort effect.
RESULTS:
In 2019, there were 958.3 thousand TBL deaths across the BRICS, representing 46.9% of the global TBL deaths. From 1990 to 2019, the age-standardized mortality rate (ASMR) of TBL decreased in Russia, Brazil, and South Africa while increased in China and India, with the largest reduction reported in Russia (-29.6%) and the largest increase in China (+22.4%). India showed an overall increase (+15.7%) in TBL mortality but the mortality risk decreased among individuals born after 1990 (men) and 1995 (women). Although South Africa and Brazil experienced an overall decline in TBL mortality, their recent birth cohorts, such as Brazilian individuals born after 1985 (men) and 1980 (women), and South African men born after 1995, had an increasing TBL mortality risk. China has experienced an overall increase in TBL mortality, with the mortality risk rising among individuals born after 1995 for both men and women. Russia, which had the highest TBL mortality among the BRICS countries in 1990, has demonstrated significant improvement over the past three decades.
CONCLUSIONS
Over the past 30 years, the BRICS accounted for an increasing proportion of global TBL mortality. TBL mortality increased in older women in all the BRICS countries except Russia. Among the recent birth cohort, the risk of TBL mortality increased in Brazil, China, and South Africa. More effective efforts are needed in the BRICS to reduce the burden of TBL and help achieve the United Nation's Sustainable Development Goals.
Humans
;
Lung Neoplasms/mortality*
;
Male
;
Female
;
China/epidemiology*
;
Middle Aged
;
Global Burden of Disease
;
Aged
;
India/epidemiology*
;
Adult
;
South Africa/epidemiology*
;
Cohort Studies
;
Russia/epidemiology*
;
Brazil/epidemiology*
;
Tracheal Neoplasms/mortality*
;
Bronchial Neoplasms/mortality*
;
Adolescent
;
Young Adult
;
Aged, 80 and over
;
Child
4.Expression of β-xylosidase An-xyl from Aspergillus niger and characterization of its xylose tolerance.
Le LI ; Cheng PENG ; Kunpeng YU ; Yiling TANG ; Yanling LIN ; Lijun LI ; Hui NI ; Qingbiao LI
Chinese Journal of Biotechnology 2023;39(11):4593-4607
The hydrolysis of xylo-oligosaccharides catalyzed by β-xylosidase plays an important role in the degradation of lignocellulose. However, the enzyme is easily inhibited by its catalytic product xylose, which severely limits its application. Based on molecular docking, this paper studied the xylose affinity of Aspergillus niger β-xylosidase An-xyl, which was significantly differentially expressed in the fermentation medium of tea stalks, through cloning, expression and characterization. The synergistic degradation effect of this enzyme and cellulase on lignocellulose in tea stems was investigated. Molecular docking showed that the affinity of An-xyl to xylose was lower than that of Aspergillus oryzae β-xylosidase with poor xylose tolerance. The Ki value of xylose inhibition constant of recombinant-expressed An-xyl was 433.2 mmol/L, higher than that of most β-xylosidases of the GH3 family. The Km and Vmax towards pNPX were 3.6 mmol/L and 10 000 μmol/(min·mL), respectively. The optimum temperature of An-xyl was 65 ℃, the optimum pH was 4.0, 61% of the An-xyl activity could be retained upon treatment at 65 ℃ for 300 min, and 80% of the An-xyl activity could be retained upon treatment at pH 2.0-8.0 for 24 h. The hydrolysis of tea stem by An-xyl and cellulase produced 19.3% and 38.6% higher reducing sugar content at 2 h and 4 h, respectively, than that of using cellulase alone. This study showed that the An-xyl mined from differential expression exhibited high xylose tolerance and higher catalytic activity and stability, and could hydrolyze tea stem lignocellulose synergistically, which enriched the resource of β-xylosidase with high xylose tolerance, thus may facilitate the advanced experimental research and its application.
Aspergillus niger/genetics*
;
Xylose/metabolism*
;
Molecular Docking Simulation
;
Xylosidases/genetics*
;
Cellulases
;
Tea
;
Hydrogen-Ion Concentration
;
Substrate Specificity
5.Inhibitory Effect of Jinkui Shenqi Pills on Glucocorticoid-Enhanced Axial Length Elongation in Experimentally Myopic Guinea Pigs.
Qian JIANG ; Wen-Jun JIANG ; Cheng-Xiu YANG ; Rui-Xue ZHANG ; Wei SUN ; Da-Dong GUO ; Jiang-Feng WU ; Bin GUO ; Xing-Rong WANG ; Hong-Sheng BI
Chinese journal of integrative medicine 2023;29(11):989-997
OBJECTIVE:
To explore the underlying mechanism of inhibition by Jinkui Shenqi Pills (JKSQP) on glucocorticoid-enhanced axial length elongation in experimental lens-induced myopia (LIM) guinea pigs.
METHODS:
Sixty 2-week old male guinea pigs were randomly divided into 4 groups with 15 guinea pigs in each group, according to the random numbers generated by SPSS software: control, LIM, saline and JKSQP groups. The control group includes animals with no treatment, while the guinea pigs in the other 3 groups received lens-induced myopization on the right eyes throughout the experiment (for 8 weeks). The saline and JKSQP groups were given daily intraperitoneal injections of 10 mg/kg hydrocortisone for 2 consecutive weeks at the same time, and then orally administered either saline or JKSQP [13.5 g/(kg•d) for 6 consecutive weeks. Body weight, anal temperature and animal appearance were observed and recorded to evaluate the GC-associated symptoms. The ocular parameters, including refraction and axial length, were measured by streak retinoscopy and A-scan ultrasonography, respectively. The levels of plasma hormones associated with the hypothalamic-pituitary-adrenal axis (HPAA), including free triiodothyronine, free thyroxine, estradiol and testosterone, were measured by radioimmunoassay, and cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate were measured by enzyme-linked immunosorbent assay. In addition, the mRNA and protein expressions of retinal amphiregulin (AREG) was measured by quantitative real-time polymerase chain reaction and Western blotting, respectively.
RESULTS:
JKSQP effectively increased body weight and anal temperature, improved animal appearance and suppressed axial length elongation in glucocorticoid-enhanced myopic guinea pigs with normalization of 4 HPAA-associated plasma hormones (all P<0.05). The plasma level of cAMP was significantly increased, whereas the plasma level of cGMP and the mRNA and protein expressions of retinal AREG were decreased after treatment with JKSQP (all P<0.05).
CONCLUSION
JKSQP exhibited a significant inhibitory effect on axial length elongation with decreased expression of AREG in the retina, and normalized 4 HPAA-associated plasma hormones and the expression of cAMP and cGMP in GC-enhanced myopic guinea pigs.
Guinea Pigs
;
Male
;
Animals
;
Glucocorticoids
;
Hypothalamo-Hypophyseal System
;
Pituitary-Adrenal System
;
Myopia/metabolism*
;
Body Weight
;
RNA, Messenger
;
Disease Models, Animal
6.From talk to action: Developing a model to foster effective integration of traditional medicine into the Ghanaian healthcare system.
Irene G AMPOMAH ; Bunmi S MALAU-ADULI ; Aduli E O MALAU-ADULI ; Theophilus I EMETO
Journal of Integrative Medicine 2023;21(5):423-429
This research assessed the experience of stakeholders and the efficacy of integrating traditional medicine into the Ghanaian health system using the Ashanti Region as the focal point. Elements of an integrative healthcare delivery model including philosophies/values, structure, process and outcome were used to conduct a quality assessment of the integrated health system in Ghana. Each element clearly showed that Ghana is currently not running a coordinated health practice model, thus making it a tolerant, rather than an inclusive, health system. Therefore, the primary purpose of this research is to discuss the development of a new and appropriately customised model that could enhance the practice of integrated healthcare in Ghana. The model we present has flexibility and far-reaching applicability in other African countries because such countries share similar socio-cultural and economic characteristics. As such, governments and health practitioners could adapt this model to improve the practice of integrated healthcare in their specific settings. Hospital administrators and health system researchers could also adapt the model to investigate or to monitor the progress and efficacy of integrated healthcare practices within their settings. This might help to understand the relationships between the integration of traditional medicine and health outcomes for a given population. Please cite this article as: Ampomah IG, Malau-Aduli BS, Malau-Aduli AEO, Emeto TI. From talk to action: Developing a model to foster effective integration of traditional medicine into the Ghanaian healthcare system. J Integr Med. 2023; 21(5): 423-429.
Ghana
;
Medicine, Traditional
;
Delivery of Health Care, Integrated
7.Cardiac amyloidosis: pathological classification and clinical analysis of 48 cases.
Tian Ping YU ; Jing HOU ; Ting Jie YANG ; Song LEI ; Mei YANG ; Yan Yan SU ; Yu Cheng CHEN ; Yu WU ; Xue Qin CHEN
Chinese Journal of Pathology 2023;52(7):671-677
Objective: To investigate the histological features and clinical manifestations in different types of cardiac amyloidosis to improve diagnostic accuracy. Methods: The histopathological features and clinical manifestations of 48 patients diagnosed with cardiac amyloidosis by Congo red stain and electron microscopy through endomyocardial biopsy were collected in West China Hospital of Sichuan University from January 2018 to December 2021. Immunohistochemical stains for immunoglobulin light chains (κ and λ) and transthyretin protein were carried out, and a review of literature was made. Results: The patients age ranged from 42 to 79 years (mean 56 years) and the male to female ratio was 1.1 to 1.0. The positive rate of endomyocardial biopsy was 97.9% (47/48), which was significantly higher than that of the abdominal wall fat (7/17). Congo red staining and electron microscopy were positive in 97.9% (47/48) and 93.5% (43/46), respectively. Immunohistochemical stains showed 32 cases (68.1%) were light chain type (AL-CA), including 31 cases of AL-λ type and 1 case of AL-κ type; 9 cases (19.1%) were transthyretin protein type (ATTR-CA); and 6 cases (12.8%) were not classified. There was no significant difference in the deposition pattern of amyloid between different types (P>0.05). Clinical data showed that ATTR-CA patients had less involvement of 2 or more organs and lower N-terminal pro-B-type natriuretic peptide (NT-proBNP) than the other type patients (P<0.05). The left ventricular stroke volume and right ventricular ejection fraction of ATTR-CA patients were better than the other patients (P<0.05). Follow-up data of 45 patients was obtained, and the overall mean survival time was 15.6±2.0 months. Univariate survival analysis showed that ATTR-CA patients had a better prognosis, while cardiac amyloidosis patients with higher cardiac function grade, NT-proBNP >6 000 ng/L, and troponin T >70 ng/L had a worse prognosis (P<0.05). Multivariate survival analysis showed that NT-proBNP and cardiac function grade were independent prognostic factors for cardiac amyloidosis patients. Conclusions: AL-λ is the most common type of cardiac amyloidosis in this group. Congo red staining combined with electron microscopy can significantly improve the diagnosis of cardiac amyloidosis. The clinical manifestations and prognosis of each type are different and can be classified based on immunostaining profile. However, there are still a few cases that cannot be typed; hence mass spectrometry is recommended if feasible.
Humans
;
Male
;
Female
;
Adult
;
Middle Aged
;
Aged
;
Prealbumin/metabolism*
;
Stroke Volume
;
Cardiomyopathies/pathology*
;
Congo Red
;
Ventricular Function, Right
;
Amyloidosis/pathology*
;
Prognosis
8.Global Epidemic of Ebola Virus Disease and the Importation Risk into China: An Assessment Based on the Risk Matrix Method.
Wei Jing SHANG ; Wen Zhan JING ; Jue LIU ; Min LIU
Biomedical and Environmental Sciences 2023;36(1):86-93
OBJECTIVE:
To analyze the global epidemic status of the Ebola virus disease (EVD) and assess the importation risk into China.
METHODS:
Data from World Health Organization reports were used. We described the global epidemic status of EVD from 1976-2021, and assessed and ranked the importation risk of EVD from the disease-outbreaking countries into China using the risk matrix and Borda count methods, respectively.
RESULTS:
From 1976-2021, EVD mainly occurred in western and central Africa, with the highest cumulative number of cases (14,124 cases) in Sierra Leone, and the highest cumulative fatality rate (85%) in the Congo. Outbreaks of EVD have occurred in the Democratic Republic of the Congo and Guinea since 2018. The importation risk into China varies across countries with outbreaks of disease. The Democratic Republic of the Congo had an extremely high risk (23 Borda points), followed by Guinea and Liberia. Countries with a moderate importation risk were Nigeria, Uganda, Congo, Sierra Leone, Mali, and Gabon, while countries with a low importation risk included Sudan, Senegal, and C
Humans
;
Hemorrhagic Fever, Ebola/prevention & control*
;
Epidemics
;
Disease Outbreaks/prevention & control*
;
Guinea/epidemiology*
;
Sierra Leone/epidemiology*
;
China/epidemiology*
9.Expression of β-glucosidase An-bgl3 from Aspergillus niger for conversion of scopolin.
Kunpeng YU ; Cheng PENG ; Yanling LIN ; Lijun LI ; Hui NI ; Qingbiao LI
Chinese Journal of Biotechnology 2023;39(3):1232-1246
Scopoletin is a coumarin compound with various biological activities including detumescence and analgesic, insecticidal, antibacterial and acaricidal effects. However, interference with scopolin and other components often leads to difficulties in purification of scopoletin with low extraction rates from plant resource. In this paper, heterologous expression of the gene encoding β-glucosidase An-bgl3 derived from Aspergillus niger were carried out. The expression product was purified and characterized with further structure-activity relationship between it and β-glucosidase analyzed. Subsequently, its ability for transforming scopolin from plant extract was studied. The results showed that the specific activity of the purified β-glucosidase An-bgl3 was 15.22 IU/mg, the apparent molecular weight was about 120 kDa. The optimum reaction temperature and pH were 55 ℃ and 4.0, respectively. Moreover, 10 mmol/L metal ions Fe2+ and Mn2+ increased the enzyme activity by 1.74-fold and 1.20-fold, respectively. A 10 mmol/L solution containing Tween-20, Tween-80 and Triton X-100 all inhibited the enzyme activity by 30%. The enzyme showed affinity towards scopolin and tolerated 10% methanol and 10% ethanol solution, respectively. The enzyme specifically hydrolyzed scopolin into scopoletin from the extract of Erycibe obtusifolia Benth with a 47.8% increase of scopoletin. This demonstrated that the β-glucosidase An-bgl3 from A. niger shows specificity on scopolin with good activities, thus providing an alternative method for increasing the extraction efficiency of scopoletin from plant material.
Aspergillus niger/genetics*
;
beta-Glucosidase/chemistry*
;
Scopoletin
;
Polysorbates
;
Coumarins
10.Political Efficacy and Health Policy Advocacy among nurses as mediated by Political Astuteness.
Simon Akwasi Osei ; Mary Grace C. Lacanaria
Philippine Journal of Nursing 2023;93(1):84-90
INTRODUCTION:
Nurses' expertise and recommendations from nurses are essential sources of opinions and recommendations for
policy development. Nurses must be actively involved in politics, and nursing could play an essential role in shaping health policy.
However, the influence of political efficacy, political astuteness, and health policy advocacy exposes a gap in the current
knowledge.
DESIGN AND METHODS:
The study utilized descriptive correlational design and mediating analysis. Purposive sampling was used
to select six hospitals in Ghana, and simple random sampling was used to select five hundred and seventy-nine nurses. The study
used the Political Efficacy Scale, Social Justice Advocacy Scale, and the Political Astuteness Inventory. The data were analyzed
by mean and Standard deviation, Pearson coefficient, ANOVA, and GLS mediation.
RESULTS:
Nurses in Ghana had a low political efficacy and health policy advocacy. Moreover, political astuteness had moderate
astuteness. A Pearson Correlation coefficient showed a moderately significant positive relationship between political efficacy and
health policy advocacy. Furthermore, political astuteness and health policy advocacy showed a statistically significant low
positive relationship. There was no significant difference in political efficacy and health policy advocacy when age, academic
qualification, nurses' rank, and years of professional experience were considered. Political astuteness partially mediated the
relationship between political efficacy and health policy advocacy.
CONCLUSION
Nurses in Ghana have limited belief in their ability to understand and affect politics and have limited participation in
healthcare advocacy initiatives. Furthermore, nurse respondents have the adequate ability of a nurse to understand political
knowledge, political participation, and legislative understanding to advocate health policies.
Nurses
;
Ghana


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