Carica papaya Represents a New Host of 16SrI-B Subgroup Phytoplasma Associated with Yellow Symptoms in China.

Carica papaya Linn, belonging to the Caricaceae family, is an economic and medicinal plant, which is widely cultivated in tropical and subtropical countries (Soib et al., 2020). Beginning in 2021, abnormal symptoms of Carica papaya exhibiting leaf yellow, crinkle and leaflet were found in Wanning city of Hainan Province, China.

Utilization and expenses of outpatient services among tuberculosis patients in three Chinese counties: an observational comparison study.

Background: The China-Gates TB project Phase II implemented case-based payment reform in three Chinese counties in 2014, designed specifically for patients diagnosed with Tuberculosis (TB). This study aimed to examine the changes in utilization and expenses of outpatient services before and after the reform implementation, among TB patients in the three counties in China.

Methods: We collected quantitative data using surveys in 2013 (baseline year) and 2015 (final year).

[Tetramethoxystilbene, a selective CYP1B1 inhibitor, suppresses adipogenesis of C3H10T1/2 pluripotent stem cells].

Objective: To investigate the inhibitory effects of tetramethoxystilbene, a selective CYP1B1 inhibitor, on adipogenic differentiation of C3H10T1/2 multi-potent mesenchymal cells.

Methods: In vitro cultured C3H10T1/2 cells at full confluence were induced by adipogenic agents (10 µg/ml insulin, 2 µmol/L dexamethasone and 0.5 mmol/L 3-isobutyl-1-methylxanthine) and exposed simultaneously to TMS at the final concentrations of 1.

Neurogenic locus notch homolog protein 4 and brain-derived neurotrophic factor variants combined effect on schizophrenia susceptibility.

Objectives: To investigate the relationships between single-nucleotide polymorphisms (SNPs) in NOTCH4 and brain-derived neurotrophic factor (BDNF) with schizophrenia among Han Chinese in Southern China.

Methods: Two NOTCH4 SNPs (rs520688 and rs415929) and two BDNF SNPs (rs2030324 and rs12273539) were examined in 464 schizophrenics and 464 healthy controls from Hunan province in South China, using the Sequenom MassARRAY® iPLEX System.

Results: In the study population, rs520688 and rs2030324 were significantly associated with schizophrenia.

[Umbilicus metastasis in patients with epithelial ovarian cancer : clinical features of 21 patients].

Objective: To analyze the clinical features, treatments and prognosis of patients with Sister Mary Joseph's nodule of umbilicus (SMJN) from epithelial ovarian cancer (EOC) patients.

Methods: Among a total of 2642 pathologically diagnosed EOC cases, 21 cases with SMJN were histopathologically diagnosed and had an age range of 40-66 years at Sun Yat-sen University Cancer Center between January 1991 and January 2011. Their clinical data were retrospectively analyzed.

A clinicopathological aspect of primary small-cell carcinoma of the uterine cervix: a single-centre study of 25 cases.

Aims: Small-cell carcinoma is a variant of poorly differentiated neuroendocrine carcinoma. Primary small-cell carcinoma of the cervix (SCCC) is recognised as a rare and aggressive malignant tumour with poor prognosis. In this study, the authors report 25 Chinese cases of SCCC, with a particular focus on their clinical and pathological characteristics.

[Clinical analysis of 12 cases of ovarian carcinosarcoma].

Objective: To evaluate the clinical pathological characteristics, treatment and prognosis of ovarian carcinosarcoma.

Methods: The clinical, pathological and follow-up data of 12 cases of ovarian carcinosarcoma treated in Cancer Center of Sun Yat-sen University from May, 2002 to May, 2009 were analyzed retrospectively.

Results: The 12 patients with ovarian carcinosarcoma had a median age of 55 years at diagnosis, among whom 10 were postmenopausal women.

[Effects of pH and Cu2+ on the detection of the Microcystin-LR based on fluorescence immunoassay and their elimination].

The effects of pH and Cu2+ on the detection of the Microcystin-LR based on evanescent wave all-fiber immunosensor (EWAI) and their elimination were studied. The experimental results indicated that both low pH and high pH greatly affected the immunoassay results of MC-LR. When pH was less than 6 or higher than 8, the fluorescence signals detected by immunosensor system obviously reduced with the decrease or increase of pH.

[Progress of evanescent wave fluorescence immunosensors in environmental detection].

The evanescent wave fluorescence immunosensor, which employs evanescent wave produced in interface of the waveguide when the light transmits on the manner of total internal reflection in the waveguide, is relatively new kind of sensor on the basis of fluorescence immunoassay principle. This sensor has many advantages including strong specificity, high sensitivity, rapid detection, cost-effective and simple operation, which will be widely applied for environmental detection, clinical medicine and food industry. The principle, structure and characteristics of evanescent wave fluorescence immunosensors were covered and the applications of this kind of sensor in environmental detection were introduced.

[Influence of magnetic field on membrane flux and CaCO3 crystallization in the unstirred dead-end NF process].

With reference to a control system operating under same conditions, unstirred dead-end NF processes of magnetic pretreated solution containing Ca2+ were conducted with NF and NF270 nanofiltration membranes to study the influence of magnetic field on the membrane flux and the crystallization of CaCO3 on membrane surface. Ca2+ in the solution was 3.6 mmol/L, and the hardness was equal to the alkalinity.