2.Research progress in Rhinovirus and associated respiratory diseases
Ruohan ZHAO ; Baicheng XIA ; Zhibo XIE ; Xizhu XU ; Yan ZHANG
Chinese Journal of Experimental and Clinical Virology 2025;39(2):254-258
Rhinovirus (RV) has been reported as one of the main viral causes of human respiratory infections and has received increasing attention in recent years due to its strong association with various respiratory diseases. Studies have shown that RV not only causes the common cold but also plays a critical role in lower respiratory tract conditions such as bronchiolitis, pneumonia, and asthma. Notably, RV is implicated in both the onset and exacerbation of asthma. This review systematically summarizes a wide range of RV-associated respiratory diseases in the available literature. Although there are currently no specific antiviral therapies or vaccines targeting RV, advances in the development of polyvalent vaccines and antiviral drugs provide promising directions for future prevention and treatment. Clarifying the relationship between RV and diseases will provide strong support for optimizing treatment strategies and preventing and controlling respiratory diseases.
3.Recent advance in quantitative susceptibility mapping in brain iron deposition associated with cognitive disorders
Ruohan SUN ; Yao MENG ; Xiaohua XIE ; Jing XU ; Yanhong DONG
Chinese Journal of Neuromedicine 2025;24(2):180-186
Iron is involved in several activities in the brain, including energy metabolism, neurotransmitter transmission, and myelination. Disorder of peripheral iron metabolism and excessive iron accumulation in the brain can reduce cognitive and behavioral ability through pathological mechanisms such as inflammatory response and abnormal protein expression, leading to cognitive disorders. Quantitative susceptibility mapping (QSM), as a new non-invasive magnetic resonance technique, can quantitatively measure brain iron deposition, clarify the relationship between cognitive disorders and iron homeostasis imbalance, and provide a basis for clinical diagnosis and treatment of the diseases. This article reviews the latest research progress of QSM in brain iron deposition associated with cognitive disorders.
4.Data Mining and Analysis on Adverse Drug Events of Novel Agents for Anti-multidrug-resistant Tuberculosis Based on FAERS
Liling ZHAO ; Junxia LI ; Shuang CHEN ; Weiwei ZHAO ; Haipeng YANG ; Ruohan XIE ; Li ZENG
Herald of Medicine 2025;44(9):1456-1464
Objective To mine and analyze adverse drug events(ADEs)of novel agents for multi-drug-resistant tuberculosis(MDR-TB)based on the FDA Adverse Event Reporting System(FAERS)database,to explore the signals of ADEs,and to provide reference for clinical use.Methods The FAERS database was searched and extracted from Q1 of 2015 to Q4 of 2023,and the ADE reports about bedaquiline,delamanid,and pretomanid were collected.Data mining and analysis were carried out on relevant reports of the drug using the reporting odds ratio(ROR),proportional reporting ratio(PRR),medicines and healthcare products regulatory agency(MHRA),and the Bayesian confidence progressive neural network(BCPNN).Results The number of ADE reports for the target drugs bedaquiline,delamanid,and pretomanid were 2 477,1 630,and 173,respectively.ADE of the target drugs involved multiple organ systems.Positive signals detected by the ROR,PRR,MHRA,and BCPNN methods were 246,246,215,204 for bedaquiline;251,251,224,200 for delamanid;and 25,25,24,22 for pretomanid.Clinically significant high-risk signals include prolonged QT interval on ECG,anemia,liver toxicity,peripheral neuropathy,etc.Conclusions The signal mining of ADEs based on the FAERS database indicates that close attention should be paid to risks such as prolonged QT interval on ECG,anemia,liver toxicity,and peripheral neuropathy during the clinical use of bedaquiline,delamanid,and pretomanid.In addition,monitoring of new potential ADE signals(such as acute heart failure,respiratory failure,acute kidney injury,etc.)should be strengthened,and timely intervention measures should be taken to ensure medication safety.
5.Literature case analysis of myelopathy induced by intrathecal chemotherapy of methotrexate and/or cytarabine
Weiwei ZHAO ; Liling ZHAO ; Ruohan XIE
Adverse Drug Reactions Journal 2025;27(2):91-98
Objective:To understand the clinical characteristics of myelopathy induced by intrathecal chemotherapy of methotrexate (MTX) and/or cytarabine (Ara-C).Methods:Relevant databases at home and abroad (up to February 18, 2024) were searched and case reports of myelopathy induced by intrathecal chemotherapy of MTX and/or Ara-C were collected. The patients′ general situation (gender, age, primary disease, etc.), use of MTX and/or Ara-C, previous radiotherapy, and occurrence time, clinical manifestations, spinal magnetic resonance imaging (MRI) results, cerebrospinal fluid test results, treatments and outcomes of myelopathy were extracted and analyzed descriptively and statistically.Results:A total of 75 articles were enrolled, involving 104 patients, with 62 males, 35 females, and 7 unknown genders. Their ages ranged from 1 to 74 years, with a median age of 26 years. The primary diseases included hematological malignancy in 101 cases, and other solid tumors in 3 cases. Before the occurrence of myelopathy, 42 cases had central nervous system tumor infiltration. Seventy-three patients received intrathecal injection of MTX combined with Ara-C, 21 patients received single MTX therapy, 10 patients received single Ara-C therapy. The number of intrathecal injections ranged from 1 to 62, with a median of 5 injections. Twenty-nine patients had received radiotherapy before. When myelopathy occurred, the cumulative dose of MTX was 7.5-480.0 mg, with a median cumulative dose of 60.0 mg; the cumulative dose of Ara-C was 15-1 599 mg, with a median cumulative dose of 280 mg. The onset time of myelopathy was from immediately to 365 days after the last intrathecal injection, with a median time of 2 days. The main clinical manifestations were weakness of both lower limbs, urinary and fecal incontinence or retention, paresthesia, and paraplegia, etc. Fifty-three patients had spinal abnormality in MRI examination, 32 had abnormal cerebrospinal fluid protein quantity, intrathecal basic protein, or homocysteine. After the diagnosis of myelopathy, 86 patients were treated with drugs, radiotherapy, plasma exchange, and cerebrospinal fluid exchange, and 18 patients had no record of treatment situation. Therapeutic agents included glucocorticoids, B vitamins, folic acid, immunoglobulin, leucovorin, S-adenosylmethionine, and dextromethorphan. Of the 104 patients, 20 achieved complete remission, with a median remission time of 30 hours; 25 experienced partial remission, with a median duration of 120 days; 32 showed no significant improvement; 26 died; one patient′s prognosis and outcome were unknown.Conclusions:The median occurrence time of myelopathy induced by intrathecal injection of MTX and/or Ara-C is 2 days. The main clinical manifestations are bilateral lower extremity weakness, urinary and bowel incontinence or retention, paresthesia, and paraplegia, etc. Abnormal spinal in MRI examination, quantitative cerebrospinal fluid protein, intrathecal basic protein occurred in some patients. Intrathecal injection should be stopped immediately after diagnosis of myelopathy, and the treatments such as drug and cerebrospinal fluid replacement should be given. The clinical outcome of myelopathy induced by intrathecal MTX and/or Ara-C was poor.
6.Data Mining and Analysis on Adverse Drug Events of Novel Agents for Anti-multidrug-resistant Tuberculosis Based on FAERS
Liling ZHAO ; Junxia LI ; Shuang CHEN ; Weiwei ZHAO ; Haipeng YANG ; Ruohan XIE ; Li ZENG
Herald of Medicine 2025;44(9):1456-1464
Objective To mine and analyze adverse drug events(ADEs)of novel agents for multi-drug-resistant tuberculosis(MDR-TB)based on the FDA Adverse Event Reporting System(FAERS)database,to explore the signals of ADEs,and to provide reference for clinical use.Methods The FAERS database was searched and extracted from Q1 of 2015 to Q4 of 2023,and the ADE reports about bedaquiline,delamanid,and pretomanid were collected.Data mining and analysis were carried out on relevant reports of the drug using the reporting odds ratio(ROR),proportional reporting ratio(PRR),medicines and healthcare products regulatory agency(MHRA),and the Bayesian confidence progressive neural network(BCPNN).Results The number of ADE reports for the target drugs bedaquiline,delamanid,and pretomanid were 2 477,1 630,and 173,respectively.ADE of the target drugs involved multiple organ systems.Positive signals detected by the ROR,PRR,MHRA,and BCPNN methods were 246,246,215,204 for bedaquiline;251,251,224,200 for delamanid;and 25,25,24,22 for pretomanid.Clinically significant high-risk signals include prolonged QT interval on ECG,anemia,liver toxicity,peripheral neuropathy,etc.Conclusions The signal mining of ADEs based on the FAERS database indicates that close attention should be paid to risks such as prolonged QT interval on ECG,anemia,liver toxicity,and peripheral neuropathy during the clinical use of bedaquiline,delamanid,and pretomanid.In addition,monitoring of new potential ADE signals(such as acute heart failure,respiratory failure,acute kidney injury,etc.)should be strengthened,and timely intervention measures should be taken to ensure medication safety.
7.Literature case analysis of myelopathy induced by intrathecal chemotherapy of methotrexate and/or cytarabine
Weiwei ZHAO ; Liling ZHAO ; Ruohan XIE
Adverse Drug Reactions Journal 2025;27(2):91-98
Objective:To understand the clinical characteristics of myelopathy induced by intrathecal chemotherapy of methotrexate (MTX) and/or cytarabine (Ara-C).Methods:Relevant databases at home and abroad (up to February 18, 2024) were searched and case reports of myelopathy induced by intrathecal chemotherapy of MTX and/or Ara-C were collected. The patients′ general situation (gender, age, primary disease, etc.), use of MTX and/or Ara-C, previous radiotherapy, and occurrence time, clinical manifestations, spinal magnetic resonance imaging (MRI) results, cerebrospinal fluid test results, treatments and outcomes of myelopathy were extracted and analyzed descriptively and statistically.Results:A total of 75 articles were enrolled, involving 104 patients, with 62 males, 35 females, and 7 unknown genders. Their ages ranged from 1 to 74 years, with a median age of 26 years. The primary diseases included hematological malignancy in 101 cases, and other solid tumors in 3 cases. Before the occurrence of myelopathy, 42 cases had central nervous system tumor infiltration. Seventy-three patients received intrathecal injection of MTX combined with Ara-C, 21 patients received single MTX therapy, 10 patients received single Ara-C therapy. The number of intrathecal injections ranged from 1 to 62, with a median of 5 injections. Twenty-nine patients had received radiotherapy before. When myelopathy occurred, the cumulative dose of MTX was 7.5-480.0 mg, with a median cumulative dose of 60.0 mg; the cumulative dose of Ara-C was 15-1 599 mg, with a median cumulative dose of 280 mg. The onset time of myelopathy was from immediately to 365 days after the last intrathecal injection, with a median time of 2 days. The main clinical manifestations were weakness of both lower limbs, urinary and fecal incontinence or retention, paresthesia, and paraplegia, etc. Fifty-three patients had spinal abnormality in MRI examination, 32 had abnormal cerebrospinal fluid protein quantity, intrathecal basic protein, or homocysteine. After the diagnosis of myelopathy, 86 patients were treated with drugs, radiotherapy, plasma exchange, and cerebrospinal fluid exchange, and 18 patients had no record of treatment situation. Therapeutic agents included glucocorticoids, B vitamins, folic acid, immunoglobulin, leucovorin, S-adenosylmethionine, and dextromethorphan. Of the 104 patients, 20 achieved complete remission, with a median remission time of 30 hours; 25 experienced partial remission, with a median duration of 120 days; 32 showed no significant improvement; 26 died; one patient′s prognosis and outcome were unknown.Conclusions:The median occurrence time of myelopathy induced by intrathecal injection of MTX and/or Ara-C is 2 days. The main clinical manifestations are bilateral lower extremity weakness, urinary and bowel incontinence or retention, paresthesia, and paraplegia, etc. Abnormal spinal in MRI examination, quantitative cerebrospinal fluid protein, intrathecal basic protein occurred in some patients. Intrathecal injection should be stopped immediately after diagnosis of myelopathy, and the treatments such as drug and cerebrospinal fluid replacement should be given. The clinical outcome of myelopathy induced by intrathecal MTX and/or Ara-C was poor.
8.Research progress in Rhinovirus and associated respiratory diseases
Ruohan ZHAO ; Baicheng XIA ; Zhibo XIE ; Xizhu XU ; Yan ZHANG
Chinese Journal of Experimental and Clinical Virology 2025;39(2):254-258
Rhinovirus (RV) has been reported as one of the main viral causes of human respiratory infections and has received increasing attention in recent years due to its strong association with various respiratory diseases. Studies have shown that RV not only causes the common cold but also plays a critical role in lower respiratory tract conditions such as bronchiolitis, pneumonia, and asthma. Notably, RV is implicated in both the onset and exacerbation of asthma. This review systematically summarizes a wide range of RV-associated respiratory diseases in the available literature. Although there are currently no specific antiviral therapies or vaccines targeting RV, advances in the development of polyvalent vaccines and antiviral drugs provide promising directions for future prevention and treatment. Clarifying the relationship between RV and diseases will provide strong support for optimizing treatment strategies and preventing and controlling respiratory diseases.
9.Recent advance in quantitative susceptibility mapping in brain iron deposition associated with cognitive disorders
Ruohan SUN ; Yao MENG ; Xiaohua XIE ; Jing XU ; Yanhong DONG
Chinese Journal of Neuromedicine 2025;24(2):180-186
Iron is involved in several activities in the brain, including energy metabolism, neurotransmitter transmission, and myelination. Disorder of peripheral iron metabolism and excessive iron accumulation in the brain can reduce cognitive and behavioral ability through pathological mechanisms such as inflammatory response and abnormal protein expression, leading to cognitive disorders. Quantitative susceptibility mapping (QSM), as a new non-invasive magnetic resonance technique, can quantitatively measure brain iron deposition, clarify the relationship between cognitive disorders and iron homeostasis imbalance, and provide a basis for clinical diagnosis and treatment of the diseases. This article reviews the latest research progress of QSM in brain iron deposition associated with cognitive disorders.
10.Euglycemic diabetic ketoacidosis caused by dapagliflozin in patient with diabetes mellitus during perioperative period of cardiac surgery
Haipeng YANG ; Shuang CHEN ; Weiwei ZHAO ; Liling ZHAO ; Ruohan XIE ; Junxia LI
Adverse Drug Reactions Journal 2023;25(4):248-250
A 43-year-old male patient with type 2 diabetes mellitus underwent off-pump coronary artery bypass grafting due to coronary atherosclerotic heart disease. Dapagliflozin was stopped 24 hours before the operation, fasting and discontinuing oral medication started at 8: 00 pm 1 day before the operation. On the day of surgery, blood gas analysis and blood glucose were normal before undergoing cardiopulmonary bypass. Tracheal intubation was successfully removed 7 hours after operation. Blood glucose and anion gap were 11.2 mmol/L and 13 mmol/L, respectively on the 2nd day after operation. The treatments of hypoglycemic, antihypertensive and lipid-regulating drugs and normal diet were restored. On the morning of the 3rd day after operation, the patient developed symptoms such as shallow rapid breathing, poor appetite, excessive urine, and irritability. Blood gas analysis showed pH 7.05, arterial partial pressure of carbon dioxide (PaCO 2) 11 mmHg, base excess -24.5 mmol/L, actual bicarbonate 21.7 mmol/L; blood glucose 10.4 mmol/L, potassium 5.3 mmol/L, and routine urine test showed ketone body (+++) in urine. Treatments such as fluid replacement, electrolyte correction, and acid-base balance, and insulin therapy were given. Ten hours later, the blood gas analysis showed pH 7.44, PaCO 2 32 mmHg, alkali residual -2.5 mmol/L, actual bicarbonate 21.7 mmol/L, anion gap 12 mmol/L, blood glucose was 6.7 mmol/L, and routine urine test showed ketone body (++) in urine. The patient′s symptoms were gradually improved on the 4th day after the operation and then metformin, acarbose, and insulin injection were given for blood glucose management. It was considered that the patient had ketoacidosis, which might be associated with dapagliflozin. Then the hypoglycemic regimen was adjusted to oral metformin 0.85 g twice daily, acarbose 50 mg twice daily, and glimepiride 2 mg twice daily on the 15th day after operation. After that, the fasting blood glucose in the patient was maintained at 8.2-10.6 mmol/L, the postprandial blood glucose was maintained at 8.2-13.1 mmol/L, and the glycosylated hemoglobin was 7.3%. The patient′s ketoacidosis did not recur.

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