Objective To explore the feasibility and image quality of respiratory-gated total-body ¹⁸F-FDG PET/CT imaging with a 4-minute acquisition in patients with malignant tumors. Methods Sixty-two patients with pathologically confirmed malignant tumors (118 lesions measured) who underwent total-body ¹⁸F-FDG PET/CT examination were consecutively enrolled at the Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, from September 23, 2021 to November 23, 2021, and their clinical and imaging data were retrospectively collected. PET data was acquired over 12 minutes with simultaneous respiratory waveform recorded. The data were reconstructed into four image sets: gated-12 group and gated-4 group (using all counts and the first 4-minute counts, respectively) and ungated-12 group and ungated-6 group (using all counts and the first 6-minute counts, respectively) reconstructed with respiratory gating that retained counts corresponding to the half respiratory window near end-expiration. Image quality assessment and quantitative analysis of lesions were performed and compared among the four image sets, and subgroup analyses were performed according to lesion location, size, and metabolic activity. Results The effective counts of 4 sets of PET images were highest in ungated-12 group, followed by ungated-6 group and gated-12 group, and lowest in gated-4 group (P＜0.001). Regardless of the metabolic level and size of the lesions, compared with the ungated-12 group and the ungated-6 group, the lesions in the gated-12 group showed higher maximum, average, and peak standardized uptake values (SUV_max, SUV_mean, and SUV_peak), tumor liver uptake ratio, tumor blood pool uptake ratio, and smaller metabolic volume (P＜0.05); There was no statistically significant difference in the above indicators between the gate-12 group and the gate-4 group. The background noise of gate-4 group images is slightly higher than that of gate-12 group images (Liver SUV_SD: [0.17＋0.05] vs [0.14＋0.04]); Blood pool SUV_SD: (0.08 ± 0.03) vs (0.06 ± 0.03). There was a statistically significant difference in subjective scores of PET image quality among the four groups (P＜0.001). The subjective scores of image quality in the gated-12 group (4.79 ± 0.41) were not significantly different from those in the non gated-12 group (4.97 ± 0.17) and non gated-6 group (4.79 ± 0.45), but were higher than those in the gated-4 group ([4.17 ± 0.45], P＜0.001)， And the scores have good consistency (Kappa＞0.75). Conclusion In total-body PET/CT imaging for malignant tumors, 4-minute respiratory-gated acquisition can achieve comparable quantitative performance to longer respiratory gating imaging while significantly shortening acquisition time. This approach demonstrates promising potential for clinical application.

Objective To investigate the global burden of visceral leishmaniasis (VL) from 1990 to 2021 and predict the trends in the burden of VL from 2022 to 2035, so as to provide insights into global VL prevention and control. Methods The global age-standardized incidence, prevalence, mortality and disability-adjusted life years (DALYs) rates of VL and their 95% uncertainty intervals (UI) were captured from the Global Burden of Disease Study 2021 (GBD 2021) data resources. The trends in the global burden of VL were evaluated with average annual percent change (AAPC) and 95% confidence interval (CI) from 1990 to 2021, and gender-, age-, country-, geographical area- and socio-demographic index (SDI)-stratified burdens of VL were analyzed. The trends in the global burden of VL were projected with a Bayesian age-period-cohort (BAPC) model from 2022 to 2035, and the associations of age-standardized incidence, prevalence, mortality, and DALYs rates of VL with SDI levels were examined with a smoothing spline model. Results The global age-standardized incidence [AAPC = -0.25%, 95% CI: (-0.25%, -0.24%)], prevalence [AAPC = -0.06%, 95% CI: (-0.06%, -0.06%)], mortality [AAPC = -0.25%, 95% CI: (-0.25%, -0.24%)] and DALYs rates of VL [AAPC = -2.38%, 95% CI: (-2.44%, -2.33%)] all appeared a tendency towards a decline from 1990 to 2021, and the highest age-standardized incidence [2.55/10⁵, 95% UI: (1.49/10⁵, 4.07/10⁵)], prevalence [0.64/10⁵, 95% UI: (0.37/10⁵, 1.02/10⁵)], mortality [0.51/10⁵, 95% UI: (0, 1.80/10⁵)] and DALYs rates of VL [33.81/10⁵, 95% UI: (0.06/10⁵, 124.09/10⁵)] were seen in tropical Latin America in 2021. The global age-standardized incidence and prevalence of VL were both higher among men [0.57/10⁵, 95% UI: (0.45/10⁵, 0.72/10⁵); 0.14/10⁵, 95% UI: (0.11/10⁵, 0.18/10⁵)] than among women [0.27/10⁵, 95% UI: (0.21/10⁵, 0.33/10⁵); 0.06/10⁵, 95% UI: (0.05/10⁵, 0.08/10⁵)], and the highest mortality of VL was found among children under 5 years of age [0.24/10⁵, 95% UI: (0.08/10⁵, 0.66/10⁵)]. The age-standardized incidence (r = -0.483, P < 0.001), prevalence (r = -0.483, P < 0.001), mortality (r = -0.511, P < 0.001) and DALYs rates of VL (r = -0.514, P < 0.001) correlated negatively with SDI levels from 1990 to 2021. In addition, the global burden of VL was projected with the BAPC model to appear a tendency towards a decline from 2022 to 2035, and the age-standardized incidence, prevalence, mortality and DALYs rates were projected to be reduced to 0.11/10⁵, 0.03/10⁵, 0.02/10⁵ and 1.44/10⁵ in 2035, respectively. Conclusions Although the global burden of VL appeared an overall tendency towards a decline from 1990 to 2021, the burden of VL showed a tendency towards a rise in Central Asia and western sub-Saharan African areas. The age-standardized incidence and prevalence rates of VL were relatively higher among men, and the age-standardized mortality of VL was relatively higher among children under 5 years of age. The global burden of VL was projected to continue to decline from 2022 to 2035.

This article aims to explore the mechanism of protein lactate modification(Kla)in sepsis and multiple organ dysfunction syndrome(MODS).By regulating gene transcription and inflammatory factor expression,Kla participates in sepsis organ function damage,and can also destroy the cell structure and metabolic homeostasis,aggravating sepsis induced lung,kidney,heart,brain,liver organ damage.By conducting in-depth study on its mechanism,it will help to explore new therapeutic targets and provide innovative ideas for clinical treatment of sepsis.

Carbapenem-resistant Enterobacteriaceae(CRE), one of the most urgent pathogens threatening human health worldwide, has posed a great challenge to clinical treatment. However, the imbalance between the lag in antibiotic research and development and the increase of CRE resistance has led to a "death threat" for patients infected with CRE, and it is urgent to explore new mechanisms of CRE resistance, which is closely related to the role of resistance genes, carbapenemases and efflux pumps. In addition, penicillin-binding protein, biofilms and iron carriers are expected to provide new research ideas to understand the drug resistance mechanism. The aim of this review is to summarize the mechanisms of CRE resistance and to provide new ideas for its treatment.

Carbapenem-resistant Enterobacteriaceae(CRE), one of the most urgent pathogens threatening human health worldwide, has posed a great challenge to clinical treatment. However, the imbalance between the lag in antibiotic research and development and the increase of CRE resistance has led to a "death threat" for patients infected with CRE, and it is urgent to explore new mechanisms of CRE resistance, which is closely related to the role of resistance genes, carbapenemases and efflux pumps. In addition, penicillin-binding protein, biofilms and iron carriers are expected to provide new research ideas to understand the drug resistance mechanism. The aim of this review is to summarize the mechanisms of CRE resistance and to provide new ideas for its treatment.

177Lu-prostate specific membrane antigen(PSMA)radio-ligand therapy has been approved abroad for advanced prostate cancer and has been in several clinical trials in China.Based on domestic clinical practice and experimental data and referred to international experience and viewpoints,the expert group forms a consensus on the clinical application of 177Lu-PSMA radio-ligand therapy in prostate cancer to guide clinical practice.

Objective To investigate the expression level and clinical application value of G-protein coupled receptor 15 ligand (GPR15L) in patients with systemic lupus erythematosus (SLE). Methods In a retrospective cohort, real-time fluorescent quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression levels of G-protein coupled receptor 15 (GPR15) mRNA and GPR15L mRNA in peripheral blood from 63 SLE patients (SLE group) and 57 healthy controls (control group). Enzyme-linked immunosorbent assay was employed to measure the serum GPR15L protein expression levels in the SLE group, control group, and 50 rheumatoid arthritis (RA) patients (disease control group). The relationship between serum GPR15L and laboratory indicators as well as therapeutic efficacy in SLE patients was analyzed. Receiver operating characteristic (ROC) curves were used to assess the diagnostic efficacy of serum GPR15 alone and combination with common autoantibody indicators for SLE. Multivariate Logistic regression analysis was conducted to explore the independent risk factors for SLE onset. Results Compared with the control group, the SLE group exhibited increased levels of GPR15 mRNA and GPR15L mRNA in peripheral blood (P=0.016 4, P < 0.000 1, respectively). The serum GPR15L expression in the SLE group was higher than that in the disease control group (P < 0.000 1). The serum GPR15L protein expression level in SLE patients was positively correlated with GPR15L mRNA and disease activity (r=0.301 3, P=0.016 4; r=0.361 7, P=0.003 6) and negatively correlated with complement C3 and C4 levels (r=-0.341 2, P=0.006 2; r=-0.338 4, P=0.006 7). The ROC curves showed that the area under the curve (AUC) for serum GPR15L in distinguishing the SLE group from the control group was 0.870 8, and the AUC for distinguishing the SLE group from the control group was 0.765 5. The diagnostic efficacy of serum GPR15L combined with anti-SSA for SLE was significantly improved, with an AUC of 0.895 2. Multivariate Logistic regression analysis revealed that elevated GPR15L protein and GPR15L mRNA were independent risk factors for SLE onset (P < 0.05). Conclusion The significant increase in serum GPR15L protein levels in SLE patients is closely related to SLE disease activity, and abnormal expression of GPR15L may play an important role in the pathogenesis of SLE.

Objective To describe the diagnosis,treatment,and clinical course of a patient with severe acute organophosphorus pesticide poisoning(AOPP)complicated by recurrent respiratory failure,intermediate syndrome(IMS),multiple organ dysfunction syndrome(MODS)and sepsis.Methods On May 8,2021,a patient who self-administered the pesticide Dimethoate AOPP was admitted to the department of internal medicine intensive care unit(MICU)of the First People's Hospital of Yunnan Province.After 29 days of treatment,the patient was successfully cured and discharged.The clinical diagnosis and treatment process was introduced.Results The 78-year-old male patient suffered from severe AOPP due to self-ingestion of the pesticide leptophos.Upon admission,he rapidly developed respiratory failure requiring urgent endotracheal intubation and mechanical ventilation support.A series of targeted treatments were administered,including the use of reactivators such as pralidoxime iodide,anticholinergic agents like atropine and scopolamine,as well as antibiotic therapy and management of water-electrolyte balance and acid-base equilibrium.Throughout his treatment,the patient experienced multiple complications,including episodes of sepsis,fluctuating cholinesterase levels,infections from multidrug-resistant bacteria,and recurrent respiratory failures.After 29 days of meticulous care,the patient was successfully weaned off the ventilator,regained normal organ function,and was discharged.Conclusion The analysis of this case highlights the importance of closely monitoring and managing drug dosage adjustments,preventing and treating infections,addressing septic shock,paying attention to the prevention and control of ventilator-associated pneumonia(VAP),conducting timely psychological evaluations,and providing interventions during the treatment process for AOPP.

Sepsis is a common cause of acute kidney injury (AKI), and the pathogenesis of sepsis-related AKI is very complicated. Recent studies have shown that oxidative stress in septic patients damages mitochondria in renal tubular epithelial cells, and causes cell death. Meanwhile, mitochondrial quality control is inhibited, including imbalance of division and fusion, excessive autophagy, and synthesis disorders, which aggravates kidney injury. Therefore, mitochondria play an important role in the pathogenesis of sepsis-related AKI, and can serve as a potential therapeutic target for sepsis-related AKI. This article reviews the mechanism of mitochondria in the pathogenesis of sepsis-related AKI and explores the treatment strategy by targeting mitochondria.