Abstract: Objective　To investigate the impacts of vaccination with inactivated SARS-COV-2 vaccine on the clinical manifestations and serological responses of COVID-19 patients infected by Delta and Alpha variants. Methods　Clinical and experimental data of 341 confirmed SARS-COV-2 patients were collected from The Eighth Affiliated Hospital of Guangzhou Medical University May 1- September 30, 2021. The subjects were divided into Delta and Alpha variant group according to virus variants, and were divided into vaccinated group and unvaccinated group according to whether they had received inactivated COVID-19 vaccine or not. The clinical manifestations and serological responses of patients with Delta and Alpha variant, and vaccinated and unvaccinated patients with Delta and Alpha variants were compared. Results　Totally 253 patients were infected with Delta variant (103 vaccinated and 150 unvaccinated patients), and 88 patients were infected with Alpha variant (21 vaccinated and 67 unvaccinated patients). The proportion of asymptomatic infection in Delta variants group was significantly lower than that in Alpha variants group (P<0.01). Delta variant group of vaccination rates and vaccine breakthrough infection rate was 40.7% (103/253) and 22.9% (58/253), were higher than Alpha variant group was 23.9% (21/88) and 8.0% (7/88), difference was statistically significant (χ2= 8.009, 9.484, P<0.01). The proportion of cough and fever in Delta variant group was higher than that in Alpha variant group (both P<0.01), the peak viral load was higher than that of Alpha variant group (P<0.01), the virus duration was longer than that of Alpha variant group (P<0.01), the levels of SAA, CRP and IFN were higher than those of Alpha variant group (all P<0.05), CD4+T cell count was lower than that of Alpha variant group (P<0.05), IgG and IgM levels were lower than those of Alpha variant group (both P<0.01). The proportion of moderate COVID-19 in the vaccinated group was lower than that in the unvaccinated group (P<0.01). In these two variants, the peak viral load of vaccinated group was lower than that of the unvaccinated group (both P<0.01), the duration of virus was shorter than that of unvaccinated group (both P<0.01). The levels of SAA, CRP and IL-6 in the vaccinated group were lower than those in the unvaccinated group (all P<0.05), CD4+T cell level was higher than that of unvaccinated group (both P<0.05), IgG and IgM level were higher than those in unvaccinated group (both P<0.05). Conclusions　Delta variant can lead to higher viral load and more severe disease course, which is associated with vaccine breakthrough infection. Inactivated vaccines for COVID-19 can reduce severe illness and death by reducing viral load, disease duration and inflammatory response through humoral and cellular immune mechanisms.

[Objective]To observe the dynamic changes of serum LH levels in different GnRH-along protocols ,and investigate the relationship between GnRH-adosage and LH levels ,and compare the clinical outcomes among different GnRH-a long protocols.[Methods]In this retrospective study,1.0 mg,0.8 mg,0.375 mg long-acting and 0.1 mg/d,0.05 mg/d short-acting GnRH-a long protocols were included from January to June in 2015 at the Reproductive Medicine Center of the First Affiliated Hospital of Sun Yat-Sen University. Serum LH levels were evaluated from a total of 250 women at the four time points,on the day before gonadotropin stimulation(Gn0),the fourth day of Gn stimulation(Gn4),the seventh day of Gn stimulation(Gn7),and the HCG administration day(HCG day),then the relationship between serum LH levels and the dosage of GnRH-a were analyzed. The number of oocytes retrieved,fertilization rate,good quality embryos rate,blastocyst transferred rate,the number of transferred embryos,implantation rate and clinical pregnancy rate were also compared.[Results]Among the long-acting groups,LH levels in 0.375 mg group were higher than those in 1.0 mg and 0.8 mg groups at the four time points(P<0.05). Total Gn dose,duration of Gnstimualtion and HMG dosage of 1.0 mg protocol and 0.8 mg protocol were significantly higher than those of 0.375 mg group(P < 0.05). In addition,the implantation rate showed an increasing tendency when the level of LH increases(P>0.05). In short-acting groups,the LH levels in 0.05 mg/d protocol were significantly lower than those in the 0.1 mg/d group at Gn0,Gn7 and HCG day(P<0.05). Total Gn dose,du?ration of Gn stimulation and HMG dosage did not show significant difference between 0.05mg and 0.1mg group. What′s more,the im?plantation rate in 0.1 mg/d group was higher than in 0.05 mg/d group(P>0.05).[Conclusion]Among the long-acting groups,the smaller amount of GnRH-a was administrated ,the higher LH levels during ovarian stimulation and implantation rate the patients ob?tained. As to the short-acting groups,the LH level and implantation rate in 0.1 mg/d group is higher than those in 0.05 mg/d group.

Objective To explore the inheritance characteristics of SCN1A gene in familial severe myoclome epilepsy in infancy.Methods The clinical information and blood of the patients and their relatives who had febrile seizure(FS)or epilepsy history were collected.Blood genome DNA were extracted.All exons of SeN1A gene were PCR amplified and screened with denaturing high Performance liquid chromatography(DHPLC)technology,and sequence analysis was performed.Results Fourteen SME patients had FS or epilepsy family history.Five were found positive history in first class relatives and 2 of them had inherited mutations of SCN1A(C.4284+2T>C and e.1216G>T):Other9 were found positive history in second class relatives and 2 of them had de novo mutations of SCN1A.Condusions SCN1A is the pathogenic gene for SME.The same muatation of SCN1A gene can be related to different clinical phenotypes.SME patients whose first class relatives with FS or epilepsy history should be taken as the focus of SCN1A inherited mutation screening.

Objective:To analyze the feature of cranial nerve involvement in nasopharyngeal carcinoma (NPC) and its relationship with the prognosis.Method:A total of 1892 patients who were diagnosed as NPC in our hospital from January 2002 to December 2003,of which the cranial nerve involvement was 183 (9.6%) patients, were analyzed the effect of cranial nerve involvement on the prognosis.Result:The percentage of cranial nerve involvement was 9.4%. The 5 year overall survival rate was 61.0%,disease free survival rate was 55.3%,local relapse free survival rate was 75.2% and distant metastasis free survival rate was73.4%.Periods of cranial nerve involvement,clinical stage,the diameter of the lymph nodes,involvement of cavernous sinus, and the level of the recovery of cranial nerve involvement were significantly associated with prognosis in univariate analysis(P<0.05).With multivariate analysis,the recovery level of cranial nerve involvement was the independent factor that affected the 5-year overall survival (RR=2.087). The diameter of the lymph nodes and involvement of cavernous sinus were the independent factors that affected the 5-year distant metastasis-free survival(RR=1.954 and 2.136,respectively).Conclusion:Periods of cranial nerve involvement and the level of the recovery of cranial nerve involvement were significantly correlated with prognosis. Involvement of cavernous sinus could increase the rate of distant metastasis.

Objective To detect the expression of BRIT1 in cervical cancer tissues and cervical noncancer tissues ,and to analyze the differences between the two tissues .Methods The expression of BRIT1 mRNA and protein in cervical cancer tissues and the paired cervical noncancer tissues was evaluated by RT‐PCR and immmunohistochemistry .Its correlation with the clinicopathological parameters including age ,tumor types ,size ,tumor pathological grade and clinical stage was analyzed .Results RT‐PCR results showed that the BRIT1 mRNA level in cervical cancer tissues was significantly lower than that in the paired cervical noncancer tis‐sues ,the difference was statistically significant (P<0 .05) .The immmunohistochemistry results showed that the BRIT 1 protein ex‐pression level in 44 cases of 63 (69 .8% ) samples wa slower than that in the paired cervical noncancer tissues ,the difference was statistically significant(P<0 .05);In high pathological grades and high clinical stages ,the decrease of BRIT1 protein expression was more significant .Conclusion The difference of the BRIT1 expression between the cervical cancer tissues and cervical noncancer tis‐sues suggests that BRIT1 may play a certain role in the occurrence and development of cervical cancer .

Adult ; Aged ; Angina Pectoris ; blood ; drug therapy ; Angiotensin II ; blood ; Capsules ; Diagnosis, Differential ; Double-Blind Method ; Drugs, Chinese Herbal ; therapeutic use ; Endothelins ; blood ; Female ; Humans ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Phytotherapy

Objective To observe neural stem cell activation and proliferation in situ afterintracerebal hemorrhage (ICH) and its effect on the neurological function of the injured adult rats.Methods Seventy-two adult rats were randomized into ICH and sham operation groups (n=36). In theICH group, type Ⅳ collagenase was injected into the internal capsule through a microinfusion pump toinduce intracerebral hemorrhage, and the rats in the sham operation group received only phosphate buffersolution injection. The neurological functions of the rats were observed by rotarod motor test on days 1, 7,14, 21, 28, and 35 after the injection. One day before sacrifice, the rots were subjected to intraperitonealBrdU injection to label the regenerated cells, and immunohistochemistry was used to detect theexpressions of nestin and BrdU in the brain tissue. Results No nestin- or BrdU-positive cells werefound in the brain of the rats in the sham operation group. In rats with ICH, nestin- and BrdU-positivecells were found predominantly in the basal ganglion around the hematoma, in the ependyma and near thesubventricular zone (SVZ) in the brain; the number of the positive cells increased significantly 7 daysafter ICH, peaked on day 14 and then significantly reduced on day 28. The rats exhibited no obviousimprovement of the impaired motor function over the period from day 1 to 35 after ICH. Activation andproliferation of the neural stem cells was not obviously related to the recovery of the neurologicalfunctions. Conclusion Endogeneous neural stem cells in the brain are activated in rats after ICH, butthese stem cells possess rather limited capacity of proliferation and can not sufficiently compensate forICH-induced neurological function impairment.

OBJECTIVETo monitor the incidence change of acute coronary heart events in the all-ages farmers in Panyu District, Guangzhou City during 1991-2001 and 2010-2011.

METHODSThe surveillance on the same defined population as that from the PRC-USA cooperative epidemiologic project on the cardiovascular and pulmonary diseases 30-year ago was carried out in Panyu, Guangzhou in 1991-2001 and 2010-2011. The crude incidence of acute coronary events and the age-standardized incidence rate were calculated by the year, gender and age, and standardized with the world standard population age distribution. Incidences at the two different periods were compared. The annual average changing rate of the incidence was obtained by the regression analysis methods.

RESULTSIn the 11 consecutive years of 1991-2001, a upward trend on the incidence of acute coronary events among the farmers in women in Panyu District was found (P < 0.05). The incidence of the acute coronary events in the year of 2010-2011 was significantly higher than that in the year of 1991 to 2001 [34.06 per 100 000 (age-adjusted rate as 28.50 per 100 000) versus 16.14 per 100 000 (age-adjusted rate as 16.57 per 100 000), P < 0.05]. The age-adjusted rate increased by 83.04%. Peak incidence of acute coronary events in males was noticed in 75-79 age group, and in 80-84 age group in females. Comparing to the period of 1991-2001, the largest incidence increases appeared in the age groups of 35-39 and 75-79 years in males, while in the age groups of 50-54 and 65-69 years in females. Up to 47.37% (36/76) events occurred on the age group older than 75 years, raised by 40.44% comparing to that in 1991-2001 (33.73%, 56/166).

CONCLUSIONSThe incidence of acute coronary events among farmers in Panyu District is at middle or low level of China but there is an increasing trend in acute coronary incidence from 1991 to 2011. Our results suggest that the prevention and treatment on acute coronary syndrome should be strengthened, and especially on the age group with the largest increase of disease incidence.

Acute Disease ; Adult ; Aged ; Aged, 80 and over ; China ; epidemiology ; Coronary Disease ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Prevalence ; Rural Population ; Sentinel Surveillance

OBJECTIVETo assess the prognostic value of biological features and therapy-related factors in multiple myeloma (MM).

METHODS123 patients with newly diagnosed MM between January 1998 and May 2005 were enrolled in this retrospective study. Biological features at presentation and therapy-related factors were analysed. The overall survival (OS) and time to progression (TTP) were estimated by Kaplan-Meier analysis and the distribution of OS and TTP were compared using log-rank test. Cox regression was used to identify the independent prognostic factors.

RESULTS(1) The univariate analysis indicated that more immature plasma cells in bone marrow biopsy, C-reactive protein >8. Omg/L, CD117 expression, serum beta2-microglobulin (beta2-MG) (3.5 approximately 5.5 mg/L), abnormal cytogenetics aberration of chromosome 13 (Delta13), hypodiploid, poor response to chemotherapy, interferon(IFN) therapy less than 6 months were associated with shorter OS(P <0.05). Lytic bone lesions at presentation, more immature plasma cells in bone marrow biopsy, serum beta2-MG (3.5 approximately 5.5 mg/L), poor response to chemotherapy, and IFN therapy less than 6 months as well as abnormal cytogenetics, hypodiploid and Delta13 were associated with shorter TTP (P <0.05). (2) Multivariable COX analysis indicated IFN therapy more than 6 months was a protective factor for OS and TTP, and more immature plasma cells in bone marrow biopsy was an independent poor prognostic factor for TTP.

CONCLUSIONThe morphology of myeloma cells is useful for assessing the prognosis. And IFN therapy more than 6 months could lengthen OS and TTP.

Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Multiple Myeloma ; diagnosis ; pathology ; therapy ; Prognosis ; Retrospective Studies ; Risk Factors ; Survival Analysis

OBJECTIVE: To analyze the feature of cranial nerve involvement in nasopharyngeal carcinoma (NPC) and its relationship with the prognosis. METHOD: A total of 1892 patients who were diagnosed as NPC in our hospital from January 2002 to December 2003, of which the cranial nerve involvement was 183 (9.6%) patients, were analyzed the effect of cranial nerve involvement on the prognosis. RESULT: The percentage of cranial nerve involvement was 9.4%. The 5 year overall survival rate was 61.0%, disease free survival rate was 55.3%, local relapse free survival rate was 75.2% and distant metastasis free survival rate was 73.4%. Periods of cranial nerve involvement, clinical stage, the diameter of the lymph nodes, involvement of cavernous sinus, and the level of the recovery of cranial nerve involvement were significantly associated with prognosis in univariate analysis(P < 0.05). With multivariate analysis, the recovery level of cranial nerve involvement was the independent factor that affected the 5-year overall survival (RR = 2.087). The diameter of the lymph nodes and involvement of cavernous sinus were the independent factors that affected the 5-year distant metastasis-free survival (RR = 1.954 and 2.136, respectively). CONCLUSION Periods of cranial nerve involvement and the level of the recovery of cranial nerve involvement were significantly correlated with prognosis. Involvement of cavernous sinus could increase the rate of distant metastasis.
Adolescent ; Adult ; Aged ; Cranial Nerves ; pathology ; Female ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; diagnosis ; pathology ; Neoplasm Staging ; Prognosis ; Young Adult