Gastric cancer is a high-incidence malignancy that poses a serious threat to public health in China, ranking among the top three cancers in both incidence and mortality. The majority of patients are diagnosed at an advanced stage, resulting in limited treatment options and poor prognosis. To address key challenges in gastric cancer diagnosis and treatment, a research team led by Professor Jiafu Ji at Peking University Cancer Hospital has focused on the project "Development and Dissemination of Precision Medicine Approaches in Gastric Cancer Management". Through a series of high-quality multicenter clinical studies, the team established a set of new international standards in perioperative treatment, individua-lized drug selection, intelligent noninvasive diagnostics, and novel immunotherapy strategies. These advances have significantly improved treatment efficacy and reduced surgical trauma, achieving key technological breakthroughs in diagnosis, therapy, and mechanistic understanding, and systematically enhancing outcomes for gastric cancer patients. The project ' s findings had a broad international impact, including hosting China ' s first International Gastric Cancer Congress. Through nationwide dissemination, they have promoted the development of precision diagnosis and treatment of gastric cancer as a discipline, and led the formulation of the National Health Commission's guidelines for gastric cancer diagnosis and treatment. In recognition of its achievements, the project was awarded the First Prize of the 2024 Chinese Medical Science and Technology Award.
Stomach Neoplasms/genetics* ; Humans ; Precision Medicine/methods* ; China ; Immunotherapy/methods*

Objective:To investigate the infection and treatment of helicobacter pylori (HP) in flying personnel, as well as their cognition of HP.Methods:By using cluster sampling method, the flying personnel who recuperated at the Second Sanatorium of Air Force Healthcare Center for Special Services Hangzhou were selected for questionnaire survey. They were divided into positive group and negative group according to whether they were infected with HP. The cognition of HP (such as whether they had known HP, how to detect HP, and the symptoms, infection route, as well as the knowledge on treatment and prevention of HP) were compared between 2 groups. The differences on infection situation at different ages, personal lifestyle, diet and living environment were also compared. The treatment of flying personnel in positive group during their stay in the sanatorium was investigated and analyzed among different age groups.Results:A total of 347 flying personnel were included, with 161 in the positive group and 186 in the negative group. The HP infection rate in the rural population before joining the army was higher than that in the urban population, with a significant difference ( χ2=7.19, P=0.007). But there were no significant differences on whether they had long-term smoking history, preferred strong tea or coffee, spicy and fried food and whether their family members were infected ( χ2=0.05-5.92, all P>0.05). The questionnaire showed that the cognition of the negative group was significantly better than the positive group on whether they understood the infection route, symptoms and preventive measures of HP ( χ2=8.28, 12.00, 48.22, P=0.005, 0.001,<0.001), but there was no difference between 2 groups on whether they had known HP, detection methods and treatment after infection ( P>0.05). The treatment rate in positive group was only 29.19% (47/161), and there was no significant difference in the treatment rate among different age groups ( P>0.05). Conclusions:There is a high HP infection rate in flying personnel on base of the survey. The poor awareness of HP would affect the treatment rate and the basic cognition would be beneficial to active prevention. The survey also shows that the environment factors are seemed more sensitive to HP than dietary habit.

Objective:To investigate the infection and treatment of helicobacter pylori (HP) in flying personnel, as well as their cognition of HP.Methods:By using cluster sampling method, the flying personnel who recuperated at the Second Sanatorium of Air Force Healthcare Center for Special Services Hangzhou were selected for questionnaire survey. They were divided into positive group and negative group according to whether they were infected with HP. The cognition of HP (such as whether they had known HP, how to detect HP, and the symptoms, infection route, as well as the knowledge on treatment and prevention of HP) were compared between 2 groups. The differences on infection situation at different ages, personal lifestyle, diet and living environment were also compared. The treatment of flying personnel in positive group during their stay in the sanatorium was investigated and analyzed among different age groups.Results:A total of 347 flying personnel were included, with 161 in the positive group and 186 in the negative group. The HP infection rate in the rural population before joining the army was higher than that in the urban population, with a significant difference ( χ2=7.19, P=0.007). But there were no significant differences on whether they had long-term smoking history, preferred strong tea or coffee, spicy and fried food and whether their family members were infected ( χ2=0.05-5.92, all P>0.05). The questionnaire showed that the cognition of the negative group was significantly better than the positive group on whether they understood the infection route, symptoms and preventive measures of HP ( χ2=8.28, 12.00, 48.22, P=0.005, 0.001,<0.001), but there was no difference between 2 groups on whether they had known HP, detection methods and treatment after infection ( P>0.05). The treatment rate in positive group was only 29.19% (47/161), and there was no significant difference in the treatment rate among different age groups ( P>0.05). Conclusions:There is a high HP infection rate in flying personnel on base of the survey. The poor awareness of HP would affect the treatment rate and the basic cognition would be beneficial to active prevention. The survey also shows that the environment factors are seemed more sensitive to HP than dietary habit.

Objective:To evaluate the effect of different doses of compound sodium chloride injection combined with norepinephrine on prevention of hypotension after lumbar anesthesia in the patients undergoing caesarean section.Methods:A total of 150 patients with a singleton fetus, aged 18-45 yr, at ≥37 weeks of gestation, of American Society of Anesthesiologists Physical Status classification Ⅰ or Ⅱ, with height ≥150 cm, weighing ≤100 kg, with body mass index < 40 kg/m 2, scheduled for elective caesarean section under lumbar anesthesia, were divided into 3 groups ( n=50 each) by the random number table method: compound sodium chloride injection 4, 8 and 12 ml·kg -1·h -1 groups (group A, group B, group C). Compound sodium chloride injection 4 ml/kg was intravenously injected for liquid preload before lumbar anesthesia, and 0.5% hyperbaric bupivacaine 12.5 mg was injected to the subarachnoid space for lumbar anesthesia. Norepinephrine was intravenously injected at a dose of 6 μg immediately after intrathecal injection, followed by an infusion of 0.05 μg·kg -1·min -1, and infusion was stopped at 5 min after delivery. Compound sodium chloride injection was intravenously infused simultaneously at a rate of 4, 8 and 12 ml·kg -1·h -1 in A, B and C groups, respectively. The maximum diameter of inferior vena cava (IVCmax) and the minimum diameter of inferior vena cava (IVCmin) were measured by ultrasound, and inferior vena cava collapse index (IVC-CI) was calculated at 1 min before fluid preload (T 1), immediately after fluid preload (T 2), at 5 min after anesthesia (T 3), at 5 min after fetal delivery (T 4) and immediately before leaving the operating room (T 5). The incidence of intraoperative adverse events (hypotension, severe hypotension, bradycardia, hypertension, nausea, and vomiting) and neonatal outcomes (umbilical artery blood gas index and Apgar score at 1 and 5 min after birth) were recorded. Results:Compared with group A, IVCmin was significantly increased and IVC-CI was decreased at T 5 in group B, and IVCmin and IVCmax were significantly increased and IVC-CI was decreased at T 5 in group C ( P<0.05). There was no significant difference in IVCmax, IVCmin and IVC-CI at each time point between group B and group C ( P>0.05). There was no significant difference in the incidence of hypotension, severe hypotension, bradycardia, hypertension, nausea and vomiting among the three groups ( P>0.05). There was no significant difference in the results of blood gas analysis of the umbilical artery and Apgar score at each time point after birth among the three groups ( P>0.05). Conclusions:Compound sodium chloride injection 4, 8 and 12 ml·kg -1·h -1 combined with norepinephrine can effectively prevent the occurrence of hypotension after lumbar anesthesia in the patients undergoing caesarean section without increasing maternal and infant adverse events, and the effect of 8 and 12 ml·kg -1·h -1 for volume supplementation is better than that of 4 ml·kg -1·h -1.

Objective To understand the radioactivity level of food surrounding a uranium mine in Xinjiang, to supplement the baseline database of food radionuclides in Xinjiang, to analyze the content of radionuclides and to estimate the internal exposure dose of residents caused by dietary intake. Methods The specific activity of ²³⁸U, ²³²Th, ²²⁶Ra, ⁴⁰K and ¹³⁷Cs of interest nuclides was measured, statistically analyzed by high purity germanium γ spectrometer, and the annual effective dose of these nuclides was estimated. Results No nuclide ²³⁸U was detected in food samples from 2018 to 2020. The average activity concentration and detection rate of other radionuclides were ²³²Th: 0.428 ± 0.038 Bq/kg (18.3%)、²²⁶Ra: 0.477 ± 0.063 Bq/kg (38%)、⁴⁰K: 162 ± 7 Bq/kg (100%)、¹³⁷Cs: 0.071 ± 0.011 Bq/kg (29.6%). The annual effective dose of residents due to food radionuclides was about 0.198 mSv. Conclusion The radioactivity level of food in the vicinity of a uranium mining mountain in Xinjiang is within the national standard limit, and the average annual effective dose caused by the diet of residents is consistent with the report of UNSCEAR in 2000. The content of artificial radionuclide ¹³⁷Cs detected in food samples will not cause harm to the health of residents.

Adult ; COVID-19 ; China/epidemiology* ; Epidemics ; Female ; Humans ; Male ; SARS-CoV-2

Objective:To study the clinical and genetic characteristics of Gitelman syndrome in children.Methods:Four children diagnosed with Gitelman syndrome in the Baoding Children′s Hospital from January 2017 to October 2018 were enrolled, and their clinical data and pathogenic gene carrying status were analyzed.Results:There were 2 males and 2 females in the enrolled patients.Two children complained of short stature and 2 children were diagnosed as hypokalemia by accident.All the 4 children showed constipation, short stature, repeated hypokalemia, hyponatremia, hypochloremia, normal urinary calcium/creatinine ratio, elevated renin and angiotensin Ⅱ levels in supine position, and normal aldosterone.Three children had hypomagnesemia and 1 child had a normal blood magnesium level.All of the 4 children had a compound heterozygous mutation of SLC12A3 gene.The mutations of c. 1670-7G>A and c. 1698C>A were not reported in the literature. Conclusions:Constipation and short stature are common clinical manifestations of Gitelman syndrome in children.Typical cases show hypokalemia, hypomagnesemia, hyponatremia and hypochloremia, etc.The blood magnesium level can be normal in few children.Most children with Gitelman syndrome carry SLC12A3 compound heterozygous mutations.

No abstract available.
Breast Neoplasms* ; Breast* ; Phenobarbital*

Purpose To investigate the diagnosis and differentail diagnosis of metastatic small cell carcinoma of bone in needle biopsy, especially for the differentail diagnosis with Ewing sarcoma of bone. Methods Clinicopathological informations of 11 cases of metastat-ic small cell carcinoma and 20 cases of Ewing sarcoma were collected, and markers for differentail diagnosis were detected in two groups by immunohistochemistry of EnVision. Results The positive rates of CD99 and FLI-1 were 27. 3% and 54. 5% in metastatic small cell carcinoma group, while the positive rate of CK was 15. 0% in Ewing sarcoma group. Patient′s age, single lesion, expression of CK, vimentin, CD99, FLI-1, CD56 were significantly different in two groups. Conclusions Metastatic small cell carcinoma and E-wing sarcoma share similar histopathologic features in needle biopsy, no single immunohistochemical marker can specifically distinguish small cell carcinoma from Ewing sarcouma. The correct diagnosis should comprehensive analyze clinicopathologic characters and a se-ries of immunohistochemical markers.

Purpose To evaluate three-dimensional strain changes of the left ventricle in patients with type 2 diabetes and poor blood glucose control using real-time three-dimensional speckle tracking imaging (RT3D-STI), and to assess the correlation between three-dimensional strains and hemoglobin A1C (HbA1c). Materials and Methods Sixty-nine patients with type 2 diabetes and forty-two control subjects were recruited in this study. The patients were divided into DM1 group (patients with well blood glucose control, HbA1c<6.5%) and DM2 group (patients with poor blood glucose control, HbA1c ≥ 6.5%) according to the glycosylated hemoglobin level. Parameters including global longitudinal strain (GLS), global circumferential strain (GCS), global radial strain (GRS), global area strain (GAS), left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV), left ventricular end-systolic volume (LVESV) and left ventricular mass (LVM) were obtained from cardiac apex full volume images by using RT3D-STI. The parameters of three groups were compared, and the correlation between the cardiac parameters and HbA1c were analyzed. Results The GAS, GLS, GCS, GRS, LVEDV, LVESV, LVM and LVEF showed no statistic difference between DM1 group and control group (P>0.05). LVM of DM2 group was higher than that in control group (P<0.01), but GAS and GLS of DM2 group were lower than those in control group (P<0.05). LVM of DM2 group was higher than that in DM1 group (P<0.01), but GAS and GLS of DM2 group were lower than those in DM1 group (P<0.01). HbA1c was negative correlated with GAS and GLS (r= - 0.773 and 0.465, P<0.01). Conclusion The reduced GAS and GLS of the patients with type 2 diabetes and poor blood glucose control may indicate damaged myocardial function.