PAP and ABC methods have been used to detect the Oxytocin-like (OXT-L) neurons in the hypothalamus of the rat and the results obtained were compared with the CT-HRP retrograde tracing study from the posterior pituitary to the hypothalamus by Ju et al. It was verified that the projections to the posterior pituitary came from the supraoptic nucleus, paraventricular nucleus, anterior and posterior fornical nucleus, perivascular cell groups, preoptic and anterior hypothalamic areas, the dorsal accessory cell groups, and the periventricular area, especially forming subependymal plexuses along the lateral wall of the third ventricle and beneath the interventricular foramen. By combining WGA-HRP retrograde tracing and immunohistochemistry methods, OXT-L neurons in all the above listed nuclei or cell groups were found to project to the posterior pituitary. The subependymal plexuses may serve as a link between the CSF in the ventricles and the posterior pituitary.

Leu-enkphalin-like(L-ENK-L)neurons of the hypothalamus and its adjacentarea of the rat were stained immunohistochemically.It has been found that besidesthe area previously reported in the literature L-ENK-L neurons are also present inSFO and the ependyma of the third ventricle.By combining WGA-HRP retrogradetracing and immunohistochemical method,L-ENK-L neurons in supraoptic nucleus,paraventricular nucleus,periventricular area and anterior fornical nucleus were foundto project to the posterior pituitary,in which some neurons squeeze in between theependymal cells.The subependymal neurons may serve as a link between the ven-tricle and the posterior pituitary.

Objective To study the clinicopathological features and differential diagnosis of bizarre parosteal osteochondromatous proliferation (BPOP). Methods The clinicopathological features of 3 patients with BPOP were analyzed , and related literature was reviewed. Results 3 patients included 2 males and 1 female with an average age 40 years old (24-53 years old). The lesions in three patients were located in the left side of the distal radius, the left side of the little finger inside and the right side of ulna coracoid, respectively. Histologically, characterized by unusual mineralized cartilaginous matrix (`blue bone'), the lesion was composed of a heterogeneous mixture of bone, cartilage and fibrous tissue. Conclusion BPOP is a rare benign surface osteocartilaginous lesion, and its diagnosis and differential diagnosis mainly depend on radiographic and histopathologic features.

Objective To observe the variation tendency of laboratory indexes after delivery in pregnant women with acute fatty liver of pregnancy (AFLP) and the effects of plasma exchange (PE) on the patients prognoses and those parameters. Methods The data of 37 patients with AFLP admitted to the Department of Intensive Care Unit (ICU) of Anhui Provincial Hospital from January 2009 to June 2017 were retrospectively analyzed and the authors tried to clarify the natural course of AFLP; all the selected patients met the Swansea criteria of the AFLP diagnosis. The patients were divided into a PE group (9 cases) and a non-PE group (28 cases) according to whether they were treated with PE or not. At the same time, the effects of PE on liver function and coagulation parameters in the patients were analyzed. Results The most common clinical symptoms of 37 AFLP patients were as follows: nausea and vomiting (21 cases, incidence 56.8%), jaundice (21 cases, 56.8%), upper abdominal pain (14 cases, 37.8%), and more than 90% of patients had more than one symptom. All 37 patients with AFLP had abnormal liver function, their differences in the severity degrees were great, and the level of aspartate aminotransferase (AST) was (271.65±265.90) U/L;the levels of creatinine (SCr) of 72.9% patients (27 cases) were more than 140 mmol/L; the prothrombin times (PT) of 72.97% patients (27 cases) were more than 15 seconds; all patients had received blood product transfusion. Liver function and blood coagulation parameters mostly returned to normal within 1 week after delivery: AST rapidly decreased on the 1 - 2 days after delivery and then continued to decrease; all the cholesterol levels in the two groups decreased to the lowest levels within 3 - 4 days after delivery and then began to rise; the total bilirubin (TBil) levels kept on basically unchanging after delivery; in the patients with levels of platelet counts (PLT) on admission ≥ 150×109/L, on the second day after delivery, their counts returned to approximately 100×109/L, while in patients with PLT < 150×109/L on admission, on the sixth day after delivery, the counts began to slowly increase to about 100×109/L; the patients with fibrinogen (Fib) levels > 1.5 g/L on admission, the levels slightly decreased 2 days before delivery, then gradually recovered and stabilized after delivery, while the patients with Fib < 1.5 g/L, the levels began to rise slowly on the second day after delivery; prothrombin time (PT) and activated partial thromboplastin time (APTT) were basically return to the normal reference ranges on the fifth day after delivery. The PE therapy could significantly improve the patients' laboratory indexes: the levels of AST, TBil, PLT, PT were significant lower immediately and on the second day after PE compared with those levels before the PE [AST (U/L): 197 (114, 383), 116 (65, 311) vs. 239 (125, 430), TBil (μmol/L):109 (67, 126), 125 (103, 178) vs. 164 (99, 198), PLT (×109/L): 96.44±33.10, 89.89±33.03 vs. 126.22±40.83, PT (s): 17.82±5.93, 18.36±3.19 vs. 22.67±8.44, all P < 0.05]. Conclusion After terminating the delivery in time for about one week, the AFLP patients' various indexes may basically return to normal; PE therapy can improve the patients' liver function and coagulation indexes.

In order to improve teachers' teaching ability and manage teachers effectively, we try to organize teachers to carry out a series of activities in the form of "teaching club". We set up six teaching clubs according to the key points of teaching work and teaching hot spots. We explore the formation of "teaching club" as a means of modern teacher management model, through the implementation of the teacher-centered concept, establish an efficient and flexible management system, and establish and improve the active development of behavior and other strategies. Through a period of practice and exploration, we have gained benefits and even made breakthroughs in many aspects, such as the construction of teaching team, curriculum construction and teaching competition. The management strategies mentioned above provide new ideas for the development of teacher management.

BACKGROUND:Studies have shown that cardiomyocyte apoptosis is closely related to cardiac decompensation and the cardiac aging process.Appropriate exercise can alter heart pump function in patients with heart failure as well as attenuate aging-induced cardiomyocyte apoptosis,hypertrophy,and fibrotic damage. OBJECTIVE:To investigate the effects of long-term aerobic exercise on cardiomyocyte apoptosis and the thioredoxin system in aging rats. METHODS:Thirty-six male Sprague-Dawley rats were selected and divided into three age groups:3-month-old young group,9-month-old middle-aged group,and 18-month-old elderly group,with 12 rats in each group.Within each age group,rats were randomly assigned to sedentary and exercise subgroups(n=6 per group).The sedentary groups did not undergo any exercise intervention.The exercise groups were acclimated to a treadmill environment and subsequently subjected to treadmill exercise for 45 minutes per day,at a speed of 15 m/min,5 days per week for 10 weeks in total.At 24 hours after the final intervention,ELISA was employed to measure serum levels of cardiac troponin I and creatine kinase-MB in rats.TUNEL assay was utilized to detect cardiomyocyte apoptosis,while western blot assay was employed to assess the protein expression of Bax,Bcl-2,Caspase 3,thioredoxin-1,thioredoxin-2,thioredoxin reductase-1,thioredoxin reductase-2,thioredoxin-interacting protein,apoptosis signal-regulating kinase 1,and P38 mitogen-activated protein kinase in rat myocardial tissue. RESULTS AND CONCLUSION:Serum levels of cardiac troponin I and creatine kinase-MB in the elderly sedentary group were significantly higher than those in the young and middle-aged sedentary groups and elderly exercise group(P<0.01).Serum levels of cardiac troponin I and creatine kinase-MB in the elderly sedentary group were significantly higher than those in the young and middle-aged exercise groups and elderly exercise group(P<0.01).Positive apoptotic cells in rat myocardial tissue,along with increased protein expression of Bax and Caspase 3,exhibited an age-related upward trend,while Bcl-2 protein expression showed a declining trend.In comparison with the sedentary groups within each age category,the number of apoptotic cardiomyocytes and the expression of Bax and Caspase 3 proteins were reduced to different degrees,and the expression of Bcl-2 protein was increased to different degrees in the corresponding exercise groups.Compared with the young sedentary group,middle-aged sedentary group and elderly exercise group,elderly sedentary rats showed a significant decrease in the expression of myocardial thioredoxin 1,thioredoxin 2,thioredoxin reductase 1,and thioredoxin reductase 2 proteins(P<0.05,P<0.01).The expression of myocardial thioredoxin 1,thioredoxin 2,and thioredoxin reductase 2 proteins was lower in the elderly exercise group than in the young exercise group(P<0.05,P<0.01),while the expression of thioredoxin reductase 1 and thioredoxin reductase 2 proteins was lower in the elderly exercise group than in the middle-aged exercise group(P<0.01).The protein expression of thioredoxin-interacting protein,apoptosis signal-regulating kinase 1,and P38 mitogen-activated protein kinase in rat myocardium was significantly higher in the elderly sedentary group than the young sedentary group,middle-aged sedentary group and elderly exercise group(P<0.01).The protein expression of thioredoxin-interacting protein,apoptosis signal-regulating kinase 1,and P38 mitogen-activated protein kinase in rat myocardium was significantly higher in the elderly exercise group than the young exercise group and middle-aged exercise group(P<0.01).To conclude,aerobic exercise may enhance the anti-apoptotic effects of thioredoxin by down-regulating the expression of thioredoxin-interacting protein in aging rat hearts,leading to the downregulation of apoptosis signal-regulated kinase 1 and P38 mitogen-activated kinase protein,thereby alleviating myocardial cell apoptosis in aging rat hearts.

Objective: To explore the etiology and pregnancy outcome of fetal intrauterine growth restriction(FGR). Methods: 120 cases of FGR pregnant women were selected as the research subjects(FGR group). And 120 healthy pregnant women who were successfully delivered during the same period were selected as the control group.The medical records and pregnancy outcomes in the two groups were analyzed and compared. Results: There was no statistically significant difference in age between the FGR group and the control group (t=1.0978, P>0.05). In the FGR group, the proportions of pregnant women who came from the countryside, without prenatal examination and the choice of cesarean section were significantly higher than those in the control group, and the differences between the two groups were statistically significant(χ²=8.832, 4.842, 7.466, 4.843, all P<0.05). The proportions of pregnancy induced hypertension, heart lung disease, premature rupture of membranes, anemia, oligohydramnios, abnormal umbilical cord, placental abnormalities intrauterine distress and meconium infection and twin pregnant women in the FGR group were significantly higher than those in the control group(χ²=12.810, 4.655, 6.666, 12.860, 16.335, 6.587, 4.629, 6.696, 7.924, 8.038, all P<0.05), these factors were the causative factors of FGR.The neonatal quality and gestational age in the FGR group were (2 134.32±322.17)g and (35.74±2.12)weeks, respectively, which were significantly lower than those in the control group[(2 793.83±427.64)g, (38.23±2.75)weeks](t=13.493, 7.855, all P<0.05). The incidence rates of neonatal morbidity, neonatal asphyxia and neonatal death in the FGR group were 15.00%, 3.33% and 4.17%, respectively, which were significantly higher than 3.33%, 1.67%, 0.00% in the control group(χ²=9.808, 4.668, 5.106, all P<0.05). Conclusion The incidence of FGR is associated with pregnancy induced hypertension, heart lung disease, premature rupture of membranes, anemia, oligohydramnios, abnormal umbilical cord, placental abnormalities intrauterine distress, meconium infection and twins.FGR should be promptly diagnosed and treated in the clinical, can terminate pregnancy when necessary, as soon as possible to improve the adverse pregnancy outcome.Improving the adverse pregnancy outcomes as much as possible can achieve the purpose of eugenics.

Objective:To explore the application effect of case-based learning (CBL), teaching mode combined with 3D printing in clinical teaching of sacral tumors.Methods:A total of 108 undergraduate interns and standardized residency training students who studied in our hospital from 2017 to 2018 were divided into the CBL teaching group ( n = 53) and the CBL combined with 3D printing teaching group ( n = 55) according to their study time. The combined teaching group used computer tomography (CT) data to reconstruct and print out a 3D model of sacral tumors based on CBL, and performed preoperative teaching on the invasion of the surrounding tissues of the tumor. The scores of the students in the two groups were evaluated respectively, and the students were surveyed by self-identification questionnaire (learning interest, self-learning ability, teamwork ability, comprehensive analysis ability and clinical thinking ability). The t-test (one-sided) was used for comparison between groups using stata 14.0. Results:The score of CBL teaching group (75.90±6.70) was lower than that of CBL combined with 3D printing teaching group (83.60±7.40). In terms of critical thinking ability evaluation, self-learning ability, learning interest, comprehensive analysis ability and clinical thinking ability, the CBL combined 3D printing teaching group was superior to the CBL teaching group, and the difference was statistically significant ( P<0.001). In terms of teamwork ability, there was no statistical difference between the two groups. Conclusion:The CBL teaching mode combined with 3D printing can improve academic performance, students' learning interest and clinical thinking ability of sacral tumors in the teaching of undergraduate interns and standardized residency training students.

The purpose of this study was to investigate the effect of low-magnitude vibration on osteogenesis of osteoblasts in ovariectomized rats with osteoporosis via estrogen receptor α(ERα). The mRNA expression of osteogenic markers were examined with qRT-PCR, based on which the optimal vibration parameter for promoting osteogenesis was determined (45 Hz × 0.9 g, g = 9.8 m/s
Animals ; Cell Differentiation ; Estrogen Receptor alpha/genetics* ; Female ; Osteoblasts ; Osteogenesis ; Osteoporosis ; Ovariectomy ; Rats ; Vibration

【Objective】 To analyze the basic characteristics of whole blood donors from blood stations before and after the outbreak of COVID-19. 【Methods】 After excluding invalid data, data related to the basic characteristics of whole blood donors collected from 26 blood stations in China during 2018 to 2021 were statistically analyzed, including the trend of total whole blood donors, the number of repeated blood donors, the frequency of blood donation, the average age of donors and the recruitment of first-time blood donors. 【Results】 Affected by the epidemic, 8 out of 14 indicators were with large variations, accounting for 57%. The overall growth rate of total whole blood donors during the epidemic was higher than before the epidemic (P<0.05).The number of repeated blood donors has shown an increased trend, with a higher number during the epidemic than before (P<0.05). The frequency of blood donation was lower during the epidemic than before(P<0.05).Average ages of blood donors and female blood donors fluctuated widely during the epidemic, both higher than those before the epidemic(P<0.05).The donation rate of first-time blood donors <25 years old and ≥25 years old varied widely and irregularly during the epidemic (both P<0.05). The percentage of first-time blood donors fluctuated irregularly during the epidemic, with overall percentage lower than that before the epidemic(P<0.05). 【Conclusion】 Whole blood donors from 26 blood stations increased after the outbreak of COVID-19, and some indicators in certain areas showed significant fluctuations during the epidemic.