Unveiling the nexus between rural population aging, technical efficiency, and carbon emissions in Chinese agriculture.

INTRODUCTION: According to the seventh national population census in China, the proportion of people aged 65 and above in the population reached 13.5%. The aging trend is more pronounced in rural areas, indicating that China has entered an aging society. This article focuses on agricultural carbon emissions in the context of aging, studying the impact of rural population aging on agricultural carbon emissions. STUDY OBJECTIVES: Under the background of deepening population aging, let us discuss how to maintain the green and sustainable development of agriculture in China. METHODOLOGY: Fixed effects and mediating effects models are used. Technical efficiency is used as a mediating variable to discuss the relationship between rural population ageing, technical efficiency and agricultural carbon emissions. RESULTS: This paper adopts the classical carbon emission calculation theory of IPCC to measure agricultural carbon emissions from 2010 to 2019, and China's plantation carbon emissions show an "inverted U-shaped" trend, reaching a high level in 2015 and then starting to decline. In addition, the fixed-effects benchmark regression found that the aging of the rural population promotes agricultural carbon emissions, and the technical efficiency of agriculture suppresses agricultural carbon emissions. Finally, the mediating effect model is applied to explore the relationship between the three. Using technical efficiency as the mediating variable, it is found that under the masking effect, rural population aging will weaken agricultural carbon emissions through technical efficiency, thus achieving the suppression of agricultural carbon emissions. POLICY RECOMMENDATION: The formulation and modification of agricultural carbon-reducing policy row policies should take full account of the broader context of rural population ageing; increase the interconnectedness and interaction between rural population ageing and agricultural production technology, and actively play a positive role in promoting the efficiency of agricultural technology as a result of rural population ageing; and, in accordance with the actual situation of agricultural research, appropriately increase the strength of financial support for agriculture to improve agricultural technology and promote low-carbon development in agriculture.

Migration of a double J stent into the inferior vena cava: A case report.

INTRODUCTION: Intravascular migration of a double J stent into the inferior vena cava is an uncommon complication. The management of such complication is less reported in the literature. This study aimed to reveal the diagnosis and treatment process of migration of a double J stent into the inferior vena cava. PATIENT CONCERNS: A 53-year-old male patients was transferred to our hospital because of migration of a double J stent into the inferior vena cava after left-side pyelolithotomy. DIAGNOSIS: In accordance with manifestations on computed tomography urography, the patient was diagnosed with migration of a double J stent into the inferior vena cava. INTERVENTIONS: Percutaneous nephroscope under C-arm guidance was performed to remove the migrated stent. After the operation, the patient was treated with continued anticoagulants and antibiotics. OUTCOMES: The migrated stent was removed successfully without any complications, and a new double J stent was placed and its location was confirmed under C-arm. The patient was discharged in good condition and the follow-up was uneventful. CONCLUSION: Intravascular migration of a double J stent into the inferior vena cava is an uncommon complication. Radiologic imaging after placement of ureteral stent is critical for prevention of this complication. Percutaneous nephroscope under C-arm guidance is a safe and effective approach to remove the migrated DJS in the IVC.

miR-3622a promotes proliferation and invasion of bladder cancer cells by downregulating LASS2.

As a tumor metastasis suppressor gene, LASS2 has been found to be negatively associated with the stage of bladder cancer and overall survival of patients. However, the mechanisms regulating LASS2 in bladder cancer remain poorly understood. Here, we aim to identify a miRNA that targets LASS2 from bladder cancer-associated miRNAs and to reveal its potential functions in bladder cancer cells. Through miRNA microarray and bioinformatics analyses, we identified miR-3622a as a negative regulator of LASS2. The expression levels of miR-3622a in bladder cancer tissues were negatively correlated with the overall survival of patients. Overexpression of miR-3622a significantly increased the proliferation and invasion abilities of bladder cancer cells. In conclusion, our results indicate that miR-3622a promotes the proliferation and invasion of bladder cancer cells by downregulating LASS2.