N7-methylguanosine(m7G)modification occurs at the 5'cap of mRNA in eukaryotes,and is also found at specific sites on tRNA and rRNA,showing wide conservation across various biological organisms.Aberrant m7G modification is involved in the dysregulation of gene expression and serves as a biomarker for multiple cancers,with significant potential for applications in tumor diagnosis and therapy.This review summarizes the biological functions and regulatory mechanisms of m7G modification,and outlines its potential clinical applications.It also highlights the oncogenic roles of aberrant m7G modification and its association with prognosis,providing a detailed discussion of the role and molecular mechanisms of abnormal m7G modification in regulating drug resistance in various cancers.

Objective:To observe the clinical effect of comprehensive reconstruction of grades Ⅰ-Ⅱ thumb and finger defects with hallux osteo-onychocutaneous flaps of great toe.Methods:This is a retrospective study. From June 2020 to December 2023, comprehensive reconstruction surgery for Grade Ⅰ-Ⅱ digital defect were performed with hallux osteo-onychocutaneous flaps of great toe for 3 thumbs and 7 fingers in 9 patients in the Department of Hand and Microsurgery of Baoji Third Hospital. Causes of digital injury were: 4 of machine crush, 3 of electric saw cut, 1 of door crush, and 1 of electrical burn. There were 6 grade I digital defects (beyond the nail root) and 4 grade Ⅱ defects (last segment of digit). The defects of the digits were reconstructed by taking references of the shape and structure of the contralateral normal thumbs and fingers. Then the hallux osteo-onychocutaneous flaps of great toe were designed and harvested accordingly from the left and right great toes. Donor sites were covered by skin grafting or local dressing change. One patient was treated in emergency surgery, 6 in sub-emergency surgery and 2 in elective surgery. Integrated perioperative patient management was provided to all of the patients. Postoperative follow-ups were conducted through the visit of outpatient clinic, telephone calls or WeChat interviews. Flap survival, appearance and sensation recovery were evaluated according to the Evaluation Standard of Upper Limb Functional of Hand Surgery of Chinese Medical Association.Results:Vascular insufficiency of 1 digit occurred in surgery, and relieved by local treatment with lidocaine and warm saline. All 10 digits successfully survived, and all donor sites healed spontaneously. The postoperative follow-up period was 10 to 30 months, with an average of 18 months. One transferred nail was found in poor appearance (not flat), the rest of the reconstructed digits were good in appearance and function. The nail, finger print and fine sensation (TPD 5~8 mm), as well as digital flexion, extension, grasping and opposition of the reconstructed digits were all good. According to the Evaluation Standard of Upper Limb Functional of Hand Surgery of Chinese Medical Association, at the last follow-up visit, 5 digits were in excellent, 4 in good and 1 in fair.Conclusion:The comprehensive reconstruction of grades Ⅰ-Ⅱ digital defects with hallux osteo-onychocutaneous flap of great toe is an ideal surgical technique that can reconstruct the nail, finger print and sensation of a digit, with good postoperative function as well as an aesthetic and realistic appearance.

BACKGROUND: In China, stroke burden remains severe as it is a major cause of mortality and disability. Detailed analyses across different subtypes will help optimize intervention strategies, enhance resource allocation efficiency, and ultimately reduce the overall disease burden. METHODS: We conducted a descriptive analysis of the incidence, prevalence, mortality, disability-adjusted life years (DALYs), years of life lost (YLLs), and years lived with disability (YLDs) of stroke and its subtypes using data (1990-2021) from the Global Burden of Disease (GBD) database. A Joinpoint regression model was applied to quantitatively analyze the indicators and calculate the annual percentage change (APC) and average annual percentage change (AAPC). We applied the Bayesian age-period-cohort (BAPC) model to project trends for 2022-2040. RESULTS: Incidence of stroke increased by 100.64% from 1990 to 2021, with ischemic stroke (IS) exhibiting the largest increase (201.13%) among all the subtypes, and the incidence being consistently higher in males than in females. The YLL/YLD ratio for stroke and its subtypes has decreased, with the YLL/YLD ratio falling from 20.13 to 9.48 in 1990-2021, indicating an increase in non-fatal burden. After adjusting for age, the age-standardized incidence rates (ASIRs) of stroke and its subtypes declined, except for IS. The age-standardized mortality rate (ASMR) for subarachnoid hemorrhage (SAH) decreased significantly (APC: -15.31%; 2000-2004), with the largest reduction in the age-standardized DALY rate (ASDR) also occurring during this period (APC: -14.22%). Furthermore, BAPC projections (2022-2040) indicate that stroke ASIRs in males will slightly decline but increase in females. Meanwhile, the ASIR of IS is expected to continue to rise. Overall, the ASMR and ASDR are projected to decline. CONCLUSIONS Although China has made some progress in stroke prevention and control, several challenges remain. Controlling IS must be prioritized, especially due to the high stroke burden among males.

Renal cancer is a common and increasingly prevalent malignancy with a complex pathogenesis influenced by genetics,smoking,and obesity.Current treatment mainly involves surgery with adjunctive chemotherapy,radiation,and immunotherapy,but high rates of recurrence and metastasis indicate its limited effectiveness,emphasizing the need for better therapeutic targets.Growing evidence indicates that epigenetic modifications,particularly RNA modifications,play a critical role in renal cancer development and progression.This review highlights recent advances in renal cancer epigenetics,focusing on RNA modifications such as N6-methyladenosine(m6 A),N7-methylguanosine(m7G),5-methylcytosine(m5C),N1-methyladenosine(m1A),adenosine-to-inosine(A-to-I),N6,2'-O-dimethyladenosine(m6Am),and N4-acetylcytidine(ac4C),along with their regulatory factors.It also explores the diagnostic and therapeutic potential of targeting RNA modifications and associated proteins.

Renal cancer is a common and increasingly prevalent malignancy with a complex pathogenesis influenced by genetics,smoking,and obesity.Current treatment mainly involves surgery with adjunctive chemotherapy,radiation,and immunotherapy,but high rates of recurrence and metastasis indicate its limited effectiveness,emphasizing the need for better therapeutic targets.Growing evidence indicates that epigenetic modifications,particularly RNA modifications,play a critical role in renal cancer development and progression.This review highlights recent advances in renal cancer epigenetics,focusing on RNA modifications such as N6-methyladenosine(m6 A),N7-methylguanosine(m7G),5-methylcytosine(m5C),N1-methyladenosine(m1A),adenosine-to-inosine(A-to-I),N6,2'-O-dimethyladenosine(m6Am),and N4-acetylcytidine(ac4C),along with their regulatory factors.It also explores the diagnostic and therapeutic potential of targeting RNA modifications and associated proteins.

N7-methylguanosine(m7G)modification occurs at the 5'cap of mRNA in eukaryotes,and is also found at specific sites on tRNA and rRNA,showing wide conservation across various biological organisms.Aberrant m7G modification is involved in the dysregulation of gene expression and serves as a biomarker for multiple cancers,with significant potential for applications in tumor diagnosis and therapy.This review summarizes the biological functions and regulatory mechanisms of m7G modification,and outlines its potential clinical applications.It also highlights the oncogenic roles of aberrant m7G modification and its association with prognosis,providing a detailed discussion of the role and molecular mechanisms of abnormal m7G modification in regulating drug resistance in various cancers.

Objective:To observe the clinical effect of comprehensive reconstruction of grades Ⅰ-Ⅱ thumb and finger defects with hallux osteo-onychocutaneous flaps of great toe.Methods:This is a retrospective study. From June 2020 to December 2023, comprehensive reconstruction surgery for Grade Ⅰ-Ⅱ digital defect were performed with hallux osteo-onychocutaneous flaps of great toe for 3 thumbs and 7 fingers in 9 patients in the Department of Hand and Microsurgery of Baoji Third Hospital. Causes of digital injury were: 4 of machine crush, 3 of electric saw cut, 1 of door crush, and 1 of electrical burn. There were 6 grade I digital defects (beyond the nail root) and 4 grade Ⅱ defects (last segment of digit). The defects of the digits were reconstructed by taking references of the shape and structure of the contralateral normal thumbs and fingers. Then the hallux osteo-onychocutaneous flaps of great toe were designed and harvested accordingly from the left and right great toes. Donor sites were covered by skin grafting or local dressing change. One patient was treated in emergency surgery, 6 in sub-emergency surgery and 2 in elective surgery. Integrated perioperative patient management was provided to all of the patients. Postoperative follow-ups were conducted through the visit of outpatient clinic, telephone calls or WeChat interviews. Flap survival, appearance and sensation recovery were evaluated according to the Evaluation Standard of Upper Limb Functional of Hand Surgery of Chinese Medical Association.Results:Vascular insufficiency of 1 digit occurred in surgery, and relieved by local treatment with lidocaine and warm saline. All 10 digits successfully survived, and all donor sites healed spontaneously. The postoperative follow-up period was 10 to 30 months, with an average of 18 months. One transferred nail was found in poor appearance (not flat), the rest of the reconstructed digits were good in appearance and function. The nail, finger print and fine sensation (TPD 5~8 mm), as well as digital flexion, extension, grasping and opposition of the reconstructed digits were all good. According to the Evaluation Standard of Upper Limb Functional of Hand Surgery of Chinese Medical Association, at the last follow-up visit, 5 digits were in excellent, 4 in good and 1 in fair.Conclusion:The comprehensive reconstruction of grades Ⅰ-Ⅱ digital defects with hallux osteo-onychocutaneous flap of great toe is an ideal surgical technique that can reconstruct the nail, finger print and sensation of a digit, with good postoperative function as well as an aesthetic and realistic appearance.