ABSTRACT
【Objective】 To investigate the immune status of blood donors in Yangzhou area after SARS-COV-2 vaccinating. 【Methods】 Among 112 voluntary blood donors from August 29 to September 22, 2021, 111 were vaccinated with SARS-COV-2 vaccine.IgM antibody(by enzyme-linked immunocapture method), IgG antibody(by indirect method of combined immunoassay)and IgG antibody titer were detected. 【Results】 A total of 99.11% (111/112 ) voluntary blood donors were vaccinated, two-shot(n=103), one-shot(n=1) and three-shot (n=7) accounting for 91.96%, 0.89% and 6.25%, respectively.Eighty-eight (78.57%) were positive for IgG antibodies, and 14 (12.5%) were positive for IgM antibodies.No statistically significant difference was found in IgG and IgM positive yielding between males and females (P>0.05). The proportion (0.89%, 1/112) of positive IgM in blood donors with blood type A was significantly lower than that of other blood types (P<0.01). The IgG antibody titer of blood donors maintained rather high level within 6 months after vaccinating.47.66% of the donors presented antibody titer more than 160, and 5.60% had IgM antibody been detected within 1 month after vaccinating. 【Conclusion】 At present, the SARS-COV-2 vaccination effect in China is generally good.Since IgG antibodies cannot be detected after 6 months, it is suggested to perform IgG antibody testing for donors who have completed the second dose for more than 6 months.For those IgG antibody negative, booster shots should be conducted.For donors with high IgG antibody titer, their plasma may be considered to replace with COVID-19 convalescent plasma for the treatment of patients with rapid disease progression, or severe/critically ill patients diagnosed with COVID-19, so as to avoid the risk of COVID-19 re-spreading during convalescent plasma collection in blood centers. For blood donors with positive IgM antibodies, it is recommended to follow up the NAT results to minimize the risk of transmission.
ABSTRACT
To investigate the role of intercellular adhesion molecule 1(ICAM 1) in the pathogenesis of bacterial keratitis,22 rats were randomly divided into bacterial keratitis group and control group. A specific staining of corneal epithelial cells, stromal keratocytes and endothelial cells for ICAM 1 was carried out by using monoclonal antibody to ICAM 1 and immunohistochemical staining techniques. The results showed that ICAM 1 expressed a low level in the corneal epithelial cells, stromal keratocytes and endothelial cells in the control group(-~+), while its expression was strong in the keratitis group (~). The difference between two groups was statistically significant ( P
ABSTRACT
To evaluate the efficacy of intravenous administration of aminocaproic acid in pre-venting secondary hemorrhage after traumatic hyphemas. Methods: 60 patients with traumatic hyphemaswere random separated into two groups: (1 ) Routine treated group: 31 patients received intramuscular ad-ministration of adrenosin or dicynone and oral administration of steroids t (2) Arninocaproic acid treatedgroup: 29 patients received aminocaproic acid in an intravenous drip. Results: The incidence of secondaryhemorrhage in the amin0caproic acid treated group was much lower than that in the routine treated group(P