We evaluated the role of pre-culture on survival rate of in vitro apple plants treated by thermotherapy. Two apple cultivars, Malusxdomestica cv. Pink Lady and Huafu, were used in the experiment and both have widely g...We evaluated the role of pre-culture on survival rate of in vitro apple plants treated by thermotherapy. Two apple cultivars, Malusxdomestica cv. Pink Lady and Huafu, were used in the experiment and both have widely grown in China and infected with Apple chlorotic leafspot virus （ACLSV） and Apple stem grooving virus （ASGV）. Results in growth and virus titer of apple plants did not exhibit clear trends during five different periods of pre-culture. Whilst, pre-culture increased the survival rate of the two cultivars during thermotherapy. The survival rate of plants pre-cultured for 13 d （P-13d） was 14 and 51% higher than that of P-ld plants for Pink Lady and Huafu, respectively. Moreover, pre-culture positively influenced regeneration of Huafu plants. The average survival rate of plants regenerated from P-ld and P-4d was 20% lower than that regenerated from P-7d, P-10d, and P-13d. The efficiency of virus eradication was determined by reverse-transcription PCR with two primer pairs for each virus, and the detection results showed that pre-culture scarcely affected apple virus elimination. Despite the fact that the two viruses were hardly detected at 5 d of thermotherapy, no virus-free plants were found in the two cultivars of regenerated apple plantlets after 30-d treatment.展开更多
The thesis conducts its analysis fromthe perspective of cultural characteristics of Chu state of Pre-Qin period in ancient China.The culture of Chu,usually focusing on ceremony sacrifice and several other activities,p...The thesis conducts its analysis fromthe perspective of cultural characteristics of Chu state of Pre-Qin period in ancient China.The culture of Chu,usually focusing on ceremony sacrifice and several other activities,presents unique characteristics of the development of Chinese society and culture.Actually,the jade artifact at that time shows cultural features both at artistic and spiritual level and bears prominent cultural connotations like national spirit of solemnness and generosity.Chinese jade of Chu state of Pre-Qin period due to its abundant cultural connotations and meanings,poses to be an essential element of traditional Chinese culture,which shows artistic and national features of traditional jade culture and can directly influence development of modern society and culture.展开更多
Schwann cells play an important role in the peripheral nervous system, especially in nerve repair following injury, so artificial nerve regen- eration requires an effective technique for obtaining purified Schwann cel...Schwann cells play an important role in the peripheral nervous system, especially in nerve repair following injury, so artificial nerve regen- eration requires an effective technique for obtaining purified Schwann cells. In vivo and in vitro pre-degeneration of peripheral nerves have been shown to obtain high-purity Schwann cells. We believed that in vitro pre-degeneration was simple and controllable, and available for the clinic. Thus, we co-cultured the crushed sciatic nerves with bone marrow-derived cells in vitro. Results demonstrated that, 3 hours after injury, a large number of mononuclear cells moved to the crushed nerves and a large number of bone marrow-derived cells infiltrated the nerve segments. These changes promoted the degradation of the nerve segments, and the dedifferentiation and proliferation of Schwann cells. Neural cell adhesion molecule and glial fibrillary acidic protein expression were detected in the crushed nerves. Schwann cell yield was 9.08 ± 2.01 ×104/mg. The purity of primary cultured Schwann cells was 88.4 ± 5.79%. These indicate a successful new method for ob- taining Schwann cells of high purity and yield from adult crushed sciatic nerve using bone marrow-derived cells.展开更多
In this manuscript the authors have studied the first two patients who were successfully treated with the treatment regimen containing Bedaquiline as second-line drug. The patients were diagnosed with pre-extensively ...In this manuscript the authors have studied the first two patients who were successfully treated with the treatment regimen containing Bedaquiline as second-line drug. The patients were diagnosed with pre-extensively drug-resistant tuberculosis (preXDR TB) whose prognosis was fatal in Democratic Republic of Congo (DRC). Bedaquiline is arguably one of the molecules of the future in the management of ultra-resistant tuberculosis. However, a larger cohort study may help to establish its effectiveness. Case report: Patients 1, 29 years old, with a history of multidrug-resistant TB (MDR-TB) one year previously. He showed signs of TB impregnation again 6 months after the last treatment. Bascilloscopy was positive again. The pre-extensively tuberculosis (pre-XDR TB) diagnosis was made by the Hain test (GenoType®MTBDRsl, Hain Lifescience). Patient 2, brother of the first patient, with a history of MDR TB a year before. He had low back pain with right parietal dorso swelling four months after the last treatment. The x-ray of the column showed L4-L5 disc disease. Parietal ultrasound showed a parietal abscess to the right of thoracic vertebrae with fistulization. Surgical biopsy and pus culture confirmed the diagnosis of Pre-XDR Extrapulmonary TB. The treatment regimen was the same for both patients: 6 months with Amikacin (Am) Bedaquiline (Bdq) Prothionamide (Pto) Paraamino Salicylic acid (PAS) Linezolid (Lzd) Cycloserine (Cs) Pyrazinamide (Z) and 14 months with PAS Lzd Cs Z. The side effects were minor. Bacteriological controls (smears and cultures) after 20 months of treatment are negative to date.展开更多
基金supported by the Agricultural Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences (CAAS-ASTIP)
文摘We evaluated the role of pre-culture on survival rate of in vitro apple plants treated by thermotherapy. Two apple cultivars, Malusxdomestica cv. Pink Lady and Huafu, were used in the experiment and both have widely grown in China and infected with Apple chlorotic leafspot virus （ACLSV） and Apple stem grooving virus （ASGV）. Results in growth and virus titer of apple plants did not exhibit clear trends during five different periods of pre-culture. Whilst, pre-culture increased the survival rate of the two cultivars during thermotherapy. The survival rate of plants pre-cultured for 13 d （P-13d） was 14 and 51% higher than that of P-ld plants for Pink Lady and Huafu, respectively. Moreover, pre-culture positively influenced regeneration of Huafu plants. The average survival rate of plants regenerated from P-ld and P-4d was 20% lower than that regenerated from P-7d, P-10d, and P-13d. The efficiency of virus eradication was determined by reverse-transcription PCR with two primer pairs for each virus, and the detection results showed that pre-culture scarcely affected apple virus elimination. Despite the fact that the two viruses were hardly detected at 5 d of thermotherapy, no virus-free plants were found in the two cultivars of regenerated apple plantlets after 30-d treatment.
基金Humanities and Social Sciences Program of 2011 Funded by Ministry of Education:Studies on Chinese Jade for Clothes in Chu State of Pre-Qin Period(No.10YJAZHD95)
文摘The thesis conducts its analysis fromthe perspective of cultural characteristics of Chu state of Pre-Qin period in ancient China.The culture of Chu,usually focusing on ceremony sacrifice and several other activities,presents unique characteristics of the development of Chinese society and culture.Actually,the jade artifact at that time shows cultural features both at artistic and spiritual level and bears prominent cultural connotations like national spirit of solemnness and generosity.Chinese jade of Chu state of Pre-Qin period due to its abundant cultural connotations and meanings,poses to be an essential element of traditional Chinese culture,which shows artistic and national features of traditional jade culture and can directly influence development of modern society and culture.
基金supported by the Key University Natural Science Research Project of Anhui Province of China,No.KJ2016A870
文摘Schwann cells play an important role in the peripheral nervous system, especially in nerve repair following injury, so artificial nerve regen- eration requires an effective technique for obtaining purified Schwann cells. In vivo and in vitro pre-degeneration of peripheral nerves have been shown to obtain high-purity Schwann cells. We believed that in vitro pre-degeneration was simple and controllable, and available for the clinic. Thus, we co-cultured the crushed sciatic nerves with bone marrow-derived cells in vitro. Results demonstrated that, 3 hours after injury, a large number of mononuclear cells moved to the crushed nerves and a large number of bone marrow-derived cells infiltrated the nerve segments. These changes promoted the degradation of the nerve segments, and the dedifferentiation and proliferation of Schwann cells. Neural cell adhesion molecule and glial fibrillary acidic protein expression were detected in the crushed nerves. Schwann cell yield was 9.08 ± 2.01 ×104/mg. The purity of primary cultured Schwann cells was 88.4 ± 5.79%. These indicate a successful new method for ob- taining Schwann cells of high purity and yield from adult crushed sciatic nerve using bone marrow-derived cells.
文摘In this manuscript the authors have studied the first two patients who were successfully treated with the treatment regimen containing Bedaquiline as second-line drug. The patients were diagnosed with pre-extensively drug-resistant tuberculosis (preXDR TB) whose prognosis was fatal in Democratic Republic of Congo (DRC). Bedaquiline is arguably one of the molecules of the future in the management of ultra-resistant tuberculosis. However, a larger cohort study may help to establish its effectiveness. Case report: Patients 1, 29 years old, with a history of multidrug-resistant TB (MDR-TB) one year previously. He showed signs of TB impregnation again 6 months after the last treatment. Bascilloscopy was positive again. The pre-extensively tuberculosis (pre-XDR TB) diagnosis was made by the Hain test (GenoType®MTBDRsl, Hain Lifescience). Patient 2, brother of the first patient, with a history of MDR TB a year before. He had low back pain with right parietal dorso swelling four months after the last treatment. The x-ray of the column showed L4-L5 disc disease. Parietal ultrasound showed a parietal abscess to the right of thoracic vertebrae with fistulization. Surgical biopsy and pus culture confirmed the diagnosis of Pre-XDR Extrapulmonary TB. The treatment regimen was the same for both patients: 6 months with Amikacin (Am) Bedaquiline (Bdq) Prothionamide (Pto) Paraamino Salicylic acid (PAS) Linezolid (Lzd) Cycloserine (Cs) Pyrazinamide (Z) and 14 months with PAS Lzd Cs Z. The side effects were minor. Bacteriological controls (smears and cultures) after 20 months of treatment are negative to date.
