Uterine epithelioid trophoblastic tumor with the main manifestation of increased human chorionic gonadotropin:A case report

BACKGROUND Epithelioid trophoblastic tumor(ETT)is an extremely rare malignant gestational trophoblastic neoplasm commonly presenting with abnormal vaginal bleeding,abdominal pain,and increased human chorionic gonadotropin(hCG).This study reported a case of uterine ETT with the main manifestation being increased hCG.CASE SUMMARY A 39-year-old female was referred to the Ningbo Maternal and Child Hospital of China in December 2022,complaining of increased hCG levels for 1 month.Magnetic resonance imaging revealed gestational trophoblastic tumor,and hysteroscopic electrotomy and curettage of intrauterine hyperplasia were performed.The patient was diagnosed with uterine ETT through postoperative pathological examination and immunohistochemical results.Total laparoscopic hysterectomy and bilateral salpingectomy were performed,and hCG levels returned to normal.The patient was without recurrence during the postoperative 3-month follow-up.CONCLUSION This study reported a case of uterine ETT with the main manifestation being increased hCG,highlighting that ETT should be considered in the presence of abnormal hCG.A total laparoscopic hysterectomy is recommended.

Predictive Value of Initial Serum Human Chorionic Gonadotropin Levels for Pregnancies after Single Fresh and Frozen Blastocyst Transfer

As one of the earliest markers for predicting pregnancy outcomes, human chorionic gonadotropin(h CG) values have been inconclusive on reliability of the prediction after frozen and fresh embryo transfer(ET). In this retrospective study, patients with positive h CG(day 12 after transfer) were included to examine the h CG levels and their predictive value for pregnancy outcomes following 214 fresh and 1513 vitrified-warmed single-blastocyst transfer cycles. For patients who got clinical pregnancy, the mean initial h CG value was significantly higher after frozen cycles than fresh cycles, and the similar result was demonstrated for patients with live births(LB). The difference in h CG value existed even after adjusting for the potential covariates. The area under curves(AUC) and threshold values calculated by receiver operator characteristic curves were 0.944 and 213.05 m IU/m L for clinical pregnancy after fresh ET, 0.894 and 399.50 m IU/m L for clinical pregnancy after frozen ET, 0.812 and 222.86 m IU/m L for LB after fresh ET, and 0.808 and 410.80 m IU/mL for LB after frozen ET with acceptable sensitivity and specificity, respectively. In conclusion, single frozen blastocyst transfer leads to higher initial h CG values than single fresh blastocyst transfer, and the initial h CG level is a reliable predictive factor for predicting IVF outcomes.

How and Why Do Gestational Trophoblastic Neoplasms Overproduce Human Chorionic Gonadotropin?

From the published data, the present mini-review attempts to answer two fundamental questions about the gestational trophoblastic neoplasms. In addition, it extrapolates the findings to other cancers that produce small amounts of hCG and how a novel therapies could be developed.

Second-trimester maternal β-human chorionic gonadotropin level associated with subsequent development of pregnancy-induced hypertension

Objective:To determine whether maternal β-human chorionic gonadotropin(β-hCG) level in second-trimester may be associated with subsequent development of pregnancy-induced hypertension(PIH).Methods:Seven hundred and sixty-two women in mid-trimester were to have maternal urine β-hCG standardized concentrations and maternal serum β-hCG measurements.Their case histories were recorded and reviewed from mid-trimester to delivery.The relation was observed between maternal urine,serum markers and subsequent development of PIH.Results:Among 762 women,504 cases were normal pregnancies,42 cases had PIH,94 cases had premature rupture of membrane (PROM),69 cases had preterm delivery (PD),53 other cases were excluded by various reasons.The levels of maternal urine,serum β-hCG in PIH were (61.75±9.78) IU/L and (304.56±54.17) ng/mg respectively,which were higher significantly than normal pregnancy group ([20.65±7.61] IU/L and [146.34±47.81] ng/mg,P<0.05).When maternal serum,urine β-hCG levels ≥2 MOM(multiple of mean),the incidences of developing PIH were increased significantly as compared with those of β-hCG <2 MOM women.The incidence of PIH increased from 5.1% in pregnancies with urine β-hCG ≥2 MOM to 11.7% in cases with urine β-hCG ≥4 MOM.Conclusion:The elevation of maternal mid-trimester urine,serum β-hCG levels is not only an early signal for dysfunction of placenta but also a dangerous signal for development of PIH.Second-trimester maternal urine β-hCG measurement proves to be superior to serum marker in clinical prediction.

Expression of Beta-Human Chorionic Gonadotropin Genes in Renal Cell Cancer and Benign Renal Disease Tissues

To study the expression of beta-human chorionic gonadotropin (βhCG) genes in renal cell carcinomas (RCC) and benign renal disease tissues, nested reverse transcription-polymerase chain reaction (RT-PCR) and restriction endonuclease analysis were employed to detect the expression of βhCG genes in 44 cases of RCC tissues and 24 cases of benign renal disease tissues It was found that 52% RCC samples revealed positive for βhCG mRNA expression Positive rate in advanced stage and poorly differentiated RCC was higher, but there was no significant difference The positive rate of βhCG mRNA expression was 54% in 24 cases of benign renal tissues, including 3 cases out of 6 polycystic kidneys, 7 cases out of 13 renal atrophies, 2 cases out of 2 oncocytomas and 1 case out of 2 pyonephrotic kidneys β7 was most frequently transcribed subtype gene independent on the histology These findings suggested βhCG gene transcription is not only involved in RCC but also in benign renal diseases

Effects on Cell Viability and on Apoptosis in Tumoral(MCF-7)and in Normal(MCF10A)Epithelial Breast Cells after Human Chorionic Gonadotropin and Derivated-Angiotensin Peptides Treatments

Angiotensin-(1 - 7) [Ang-(1 - 7)] is an endogenous heptapeptide hormone of the renin-angiotensin system that has antiproliferative properties. The aim of this work was to evaluate the anti-proliferative and pro-apoptotic properties of Ang-(1 - 7) and of Ang-(1 - 7)-substituents 9-fluorenylmethyloxycarbonyl (Fmoc) e Ang II-derivatives containing the TOAC (2,2,6,6-tetramethylpiperidine-N-oxyl-4-amino-4-carboxylic acid) in normal (MCF10A) and in tumoral (MCF7) epithelial mammary cell lines. Both cell lines received an hCG and angiotensin peptides 24-hour treatment, in combination or alone followed by cell viability, apoptosis and cell cycle assays performed by flow cytometer (GUAVA). After hCG, Ang-(1 - 7), hCG + Ang-(1 - 7) and hCG + Ang-(1 - 7)-Fmoc treatments, MCF7 displayed cell viability decrease and mid-apoptosis increase. We also observed cell viability decrease in MCF10A after Ang-(1 - 7), Ang-(1 - 7) Fmoc and hCG + AngII Toac treatments. These cells had an increase in late apoptosis and necrosis after AngII Toac, hCG + Ang-(1 - 7) and hCG + Ang-(1 - 7)-Fmoc treatments. Regarding the cell cycle analysis, we did not observed any changes in cell cycle phases. In summary, cell viability was decreased and apoptosis (initial, mid and late) was increased after hCG and/or Ang-(1 - 7) peptides treatments. These results point out hCG and Ang-(1 - 7) as effective compounds to inhibit cell proliferation, since they decrease cell viability and increase apoptosis in both normal and in tumoral breast cells, being the effect more pronounced in the tumoral cell line. Our results support the idea of investigating more closely the putative use of these compounds as novel therapeutic agents for breast cancer.

Effect of different fertilization time after human chorionic gonadotropin injection on fertilization outcome of patients in vitro fertilizationembryo transfer

Objective:To explore the effect of different fertilization time after human chorionic gonadotropin(HCG)injection on the outcome of fertilization in vitro fertilization-embryo transfer(IVF-ET).Methods:One thousand one hundred and forty IVF-ET cycles from January 2016 to August 2018 were analyzed retrospectively.According to the different fertilization time after injection of HCG divided into four groups:Group A(38.0 h~39.0 h),Group B(39.1 h~40.0 h),Group C(40.1 h~41.0 h),and Group D(41.1 h~42.0 h).The normal fertilization rate,the normal cleavage rate,the embryo utilization rate,the high-quality embryo rate,the clinical pregnancy rate,the implantation rate,and the spontaneous abortion rate were analyzed among the groups.Then we investigated the effect of different promotion methods on the outcome of fertilization during the optimal fertilization time.Results:There was no significant difference in 2PN cleavage rate,available embryo rate,clinical pregnancy rate,implantation rate and abortion rate among the four groups(P>0.05).The high-quality embryo rate in Group D(44.6%)was the highest,and was significantly different among the four groups(P<0.05).The normal fertilization rate in Group D(71.6%)was the highest,and was significantly different among the four groups(P<0.05).The normal fertilization rate(78.1%)of antagonist group was significantly higher than other groups(P<0.05).Conclusion:The different fertilization time after HCG injection have effects on high-quality embryo rate and normal fertilization rate of patients in IVF-ET.The appropriate fertilization time of patients in IVF-ET was 41 h~42 h after HCG injection in our reproductive center,improved the clinical pregnancy rate and reduced the early abortion rate.The GnRH-ant protocol is superior to other protocol in IVF-ET.

The Study on Immuno-response and Antisera Properties of Recombinant β-subunit of Human Chorionic Gonadotropin in C57 Black Mouse

In this study, the immuno-response of recombinant hCG-β and natural hCGβ was comparatively investigated by using Freund's adjuvant. The results showed that, the properties and merits of the antibodies elicited by both kinds of hCG-β were similar. The antisera had high affinity for binding with hCG (Kαγβ≈5.86×108/mol/L, Kαβ≈8.18×108/mol/L), and were found to be effective in inhibiting the binding of 125I-hCG to receptors in rat testes. Results also indicated that, similar to the antisera induced by natural hCG-β, the recombinant hCG-β induced antisera had capacity of neutralizing the biological activities of hCG. Recombinant hCG-β could be used as an immunogen for contraceptive vaccine.

超声“四切面”法联合妊娠中期产妇血清Freeβ-hCG和uE3筛查胎儿严重先天性心脏病的研究

目的:探究超声“四切面”法联合妊娠中期孕妇血清游离人绒毛膜促性腺激素(Freeβ-hCG)和雌三醇(uE3)筛查胎儿严重先天性心脏病(CHD)的临床应用价值。方法:选择2020年1月到2021年6月我院行妊娠中期CHD筛查的孕妇97例,检测孕妇血清Freeβ-hCG和uE3水平,采用超声“四切面”法筛查CHD,分析超声“四切面”法联合血清Freeβ-hCG和uE3水平对CHD的诊断价值。结果:97例孕妇随访确诊为严重CHD 9例(9/97,9.28%);超声“四切面”法检查提示高危胎儿25例,其中4例确诊为严重CHD(4/25,16.00%);孕妇血清学检测提示高危胎儿36例,其中6例最终确诊为严重CHD(6/36,16.67%);超声“四切面”法联合孕妇血清学检测提示高危胎儿9例,其中5例确诊为严重CHD(5/9,55.56%)。超声“四切面”法筛查严重CHD的敏感度、特异度、准确度、阳性预测值和阴性预测值分别为16.00%、93.51%、74.51%、44.44%和77.22%。孕妇血清Freeβ-hCG和uE3水平筛查严重CHD的敏感度、特异度、准确度、阳性预测值和阴性预测值分别为55.56%、95.31%、92.08%、66.67%和64.00%,二者联合筛查严重CHD的敏感度、特异度、准确度、阳性预测值和阴性预测值分别为55.56%、95.65%、92.08%、55.56%和91.09%。二者联合检测的诊断情况高于单一检测方法(P<0.05)。结论:超声“四切面”法对妊娠中期孕妇筛查严重CHD具有较高的诊断价值,联合孕妇血清Freeβ-hCG和uE3水平能进一步提高诊断准确度,具有较好的临床应用价值。

Live births from in vitro fertilization-embryo transfer following the administration of gonadotropin-releasing hormone agonist without gonadotropins:Two case reports

BACKGROUND The prevalence of female infertility between the ages of 25 and 44 is 3.5%to 16.7%in developed countries and 6.9%to 9.3%in developing countries.This means that infertility affects one in six couples and is recognized by the World Health Organization as the fifth most serious global disability.The International Committee for Monitoring Assisted Reproductive Technology reported that the global total of babies born as a result of assisted reproductive technology procedures and other advanced fertility treatments is more than 8 million.Advancements in controlled ovarian hyperstimulation procedures led to crucial accomplishments in human fertility treatments.The European Society for Human Reproduction and Embryology guideline on ovarian stimulation gave us valuable evidence-based recommendations to optimize ovarian stimulation in assisted reproductive technology.Conventional ovarian stimulation protocols for in vitro fertilization(IVF)–embryo transfer are based upon the administration of gonadotropins combined with gonadotropin-releasing hormone(GnRH)analogues,either GnRH agonists(GnRHa)or antagonists.The development of ovarian cysts requires the combination of GnRHa and gonadotropins for controlled ovarian hyperstimulation.However,in rare cases patients may develop an ovarian hyper response after administration of GnRHa alone.CASE SUMMARY Here,two case studies were conducted.In the first case,a 33-year-old female diagnosed with polycystic ovary syndrome presented for her first IVF cycle at our reproductive center.Fourteen days after triptorelin acetate was administrated(day 18 of her menstrual cycle),bilateral ovaries presented polycystic manifestations.The patient was given 5000 IU of human chorionic gonadotropin.Twenty-two oocytes were obtained,and eight embryos formed.Two blastospheres were transferred in the frozen-thawed embryo transfer cycle,and the patient was impregnated.In the second case,a 37-year-old woman presented to the reproductive center for her first donor IVF cycle.Fourteen days after GnRHa administration,the transvaginal ultrasound revealed six follicles measuring 17-26 mm in the bilateral ovaries.The patient was given 10000 IU of human chorionic gonadotropin.Three oocytes were obtained,and three embryos formed.Two high-grade embryos were transferred in the frozen-thawed embryo transfer cycle,and the patient was impregnated.CONCLUSION These two special cases provide valuable knowledge through our experience.We hypothesize that oocyte retrieval can be an alternative to cycle cancellation in these conditions.Considering the high progesterone level in most cases of this situation,we advocate freezing embryos after oocyte retrieval rather than fresh embryo transfer.

宫腔灌注HCG联合地屈孕酮对复发性流产患者外周血淋巴细胞水平和妊娠结局的影响

目的:了解宫腔灌注人绒毛膜促性腺激素(HCG)联合地屈孕酮对复发性流产(RSA)患者的外周血淋巴细胞水平变化和妊娠结局的影响。方法:选取2019年1月~2020年10月深圳市宝安区妇幼保健院就诊的RSA患者43例作为研究对象,分为研究组(n=19)与对照组(n=24),对照组给予地屈孕酮,研究组在对照组基础上给予宫腔灌注HCG,分析两组治疗前后着床期外周血淋巴细胞、雌二醇(E2)、孕酮(P)及3个周期的临床妊娠结局。结果:两组患者在年龄、不良孕产次数以及排卵日子宫内膜厚度上比较差异无统计学意义(P>0.05);治疗前两组在着床期E_(2)及P比较差异无统计学意义(P>0.05),治疗后研究组与对照组的血清E_(2)、P均较治疗前升高,且治疗后的研究组的E_(2)及P较对照组升高,差异均有统计学意义(P<0.05);治疗前及治疗后两组在着床期外周血B淋巴细胞、NK细胞、CD3^(+)T细胞、CD3^(+)CD8^(+)T细胞以及CD4^(+)/CD8^(+)T细胞比较差异均无统计学意义(P>0.05),但研究组外周血CD3^(+)CD4^(+)T细胞百分比较治疗前升高,差异均有统计学意义(P<0.05);研究组的临床妊娠率高于对照组,孕早期自然流产率低于对照组,两组比较差异均有统计学意义(P<0.05)。结论:宫腔灌注HCG联合地屈孕酮治疗RSA可以通过提升着床期的雌、孕激素值以及增加外周血淋巴细胞中的CD3^(+)CD4^(+)T细胞百分比提升RSA患者临床妊娠率及降低流产的风险。

超声NT及LC联合母血分子标志物评估高危妊娠产妇妊娠结局的价值

目的:探讨超声颈项透明层厚度(NT)、子宫颈长度(LC)联合游离人绒毛膜促性腺激素(B-HCG)、妊娠相关血浆蛋白(PAPPA)、D二聚体(D-D)评估高危妊娠产妇妊娠结局的价值。方法:回顾性选取2019年1月至2022年1月在我院就诊的高危妊娠产妇80例作为研究对象,根据是否发生不良妊娠结局分为有不良妊娠结局组和无不良妊娠结局组,比较两组NT、LC、动脉S/D、PI、RI以及血清B-HCG、PAPPA、D-D的差异,以及指标间的相关性和对不良妊娠结局的预测价值。结果:有不良妊娠结局产妇的B-HCG、PAPPA、D-D和NT分别为(2.28±0.62)mom、(0.72±0.16)mom、(351.12±82.80)mg/L和(3.78±0.81)mm,明显高于无不良妊娠结局产妇(1.75±0.41)mom、(0.57±0.15)mom、(295.33±85.52)mg/L和(3.31±0.64)mm(P<0.01),而LC为(24.49±4.53)mm,明显低于无不良妊娠结局产妇(31.01±5.12)mm(P<0.01)。B-HCG、PAPPA、D-D水平与NT呈正相关(P<0.05),而与LC呈负相关(P<0.05)。NT、LC联合B-HCG、PAPPA、D-D预测高危妊娠产妇不良妊娠结局的ROC曲线下面积为0.911(95CI:0.848~0.974),明显高于各指标单独预测,其灵敏性和特异性分别为79.20%和96.30%,P<0.01。结论:NT、LC及B-HCG、PAPPA、D-D与高危妊娠产妇不良妊娠结局有相关性,在预测高危妊娠产妇不良妊娠结局中有较好的价值。

河北省免费NIPT联合PAPP-A、F-β-HCG 及超声检查诊断孕中期胎儿染色体异常的意义

目的 评价河北行免费的无创产前DNA检测(NIPT),联合血清妊娠相关血浆蛋白-A(PAPP-A)、游离β-人绒毛膜促性腺激素(F-β-HCG)检测及超声对孕中期染色体异常的诊断价值。方法 选取衡水市第二人民医院2019年1月至2023年1月接收的3 591例拟行染色体检测的孕中期妇女,均行免费NIPT联合血清学指标(PAPP-A、F-β-HCG)及超声检查。将羊水穿刺染色体核型分析结果记为金标准,采用受试者工作特征曲线(ROC)评价不同方法诊断孕中期染色体异常的价值。结果 经随访,在3 591例中,共有39例染色体异常,其中,32例经超声检查有染色体异常,34例经NIPT检测有染色体异常。在3 552例染色体正常的胎儿中,34例经超声检查有染色体异常,36例经NIPT检测有染色体异常;染色体异常胎儿的母体PAPP-A、F-β-HCG水平均高于染色体正常胎儿的母体(P<0.05)。PAPP-A、F-β-HCG共同诊断胎儿染色体异常的敏感度及ROC曲线下方的面积(AUC)均高于母体PAPP-A、F-β-HCG单独诊断(P<0.05);NIPT,PAPP-A、F-β-HCG及超声的联合诊断的敏感度及AUC均高于NIPT,PAPP-A、F-β-HCG,超声的单独诊断(P<0.05),且不同方法诊断染色体异常的特异度对比差异均无统计学意义(P>0.05)。结论 孕中期胎儿染色体异常的母体PAPP-A、F-β-HCG水平高,且NIPT联合PAPP-A、F-β-HCG及超声诊断染色体异常有较好的价值。

人绒毛膜促性腺激素激发试验在性发育异常儿童中的诊断作用评估

目的探讨人绒毛膜促性腺激素(human chorionic gonadotrophin,hCG)激发试验在诊断不同分型性发育异常(disorder of sexual development,DSD)患儿中的价值。方法回顾性分析132例DSD患儿,按染色体核型分为46,XX组(n=10)、46,XY组(n=87)、性染色体异常组(n=35),比较各组患儿hCG激发试验前后的性激素水平,分析形态学上是否存在睾丸组织对hCG激发试验结果的影响。结果3组患儿激发试验后睾酮(testosterone,T)增加倍数比较差异无统计学意义(P>0.05)。46,XY组中,5α-还原酶2缺乏症患儿激发试验后的T与双氢睾酮(dihydrotestosterone,DHT)比值高于其他46,XY DSD患儿(P<0.05)。形态学上,有睾丸组织的DSD患儿激发试验后T增加倍数高于无睾丸组织患儿(P<0.05)。结论hCG激发试验对于评估不同类型的DSD患儿的睾丸间质细胞存在和功能均具有重要价值,对于性腺性质不明确的DSD患儿,均建议行hCG激发试验。

无锡地区孕中期孕妇血清AFP、free β-HCG、uE_3中位数标化及其应用

目的对无锡地区孕中期单胎孕妇血清甲胎蛋白(AFP)、游离β人绒毛膜促性腺激素(freeβ-HCG)、游离雌三醇(uE_3)水平的中位数进行孕周、体质量标化,并分析其在21三体综合征(DS)、18三体综合征(ES)及神经管缺陷(NTD)风险评估中的应用效能。方法对无锡地区8 783名孕中期(孕15~20+6周)单胎孕妇进行血清AFP、freeβ-HCG、uE_3检测。应用Life Cycle4.0软件分析得到血清AFP、freeβ-HCG、uE_3水平的中位数,先后进行孕周、体质量标化调整,得到新的中位数。应用标化后的中位数进行DS、ES及NTD风险评估,以羊水核型分析结果和出生后结局为标准,比较标化前后血清学指标中位数的应用效能。结果无锡地区孕妇血清freeβ-HCG中位数较高,与未标化中位数(软件内置,来自高加索人群)相比,P均<0.01。标化中位数对DS、ES的筛查效率较未标化中位敉提高;运用标化中位数对DS、ES、NTD的总体检出率为10/12,高于未标化中位数的8/12。与未标化血清学指标中位数倍数值的中位数(mMoM)相比,标化血清AFP的mMoM升高,freeβ-HCG、uE_3的mMoM降低(P均<0.01)。结论经过孕周、体质量标化调整后,建立了无锡地区孕妇血清AFP、freeβ-HCG、uE_3水平中位数,与Life Cycle4.0软件内置中位数存在差异。参考标化后的AFP、freeβ-HCG、uE_3水平中位数判定筛查结果,有助于提高筛查效率。

颈项透明层厚度超声联合血清AFP、free β-HCG筛查孕早期21-三体综合征胎儿效能的价值

目的探讨胎儿颈项透明层(NT)厚度超声联合血清学指标筛查孕早期21-三体综合征胎儿诊断效能价值。方法选择8 249例孕早期孕妇资料,年龄20~42岁,平均年龄28.65岁;体质量51~78 kg,平均体质量61.2 kg;孕周11~13周,平均孕周11.98周;汉族8 240例,少数民族9例。实验室检测血清甲胎蛋白(AFP)、游离人绒毛膜促性腺激素β(free β-HCG)、游离雌三醇;行NT厚度超声测量。分析孕早期血清学检查指标和NT厚度超声诊断不同联合方式对21-三体综合征的价值。结果共检出21-三体综合征29例。21-三体综合征孕妇血清AFP、游离雌三醇水平均低于非21-三体综合征孕妇(P<0.05),21-三体综合征孕妇血清freeβ-HCG水平和胎儿NT厚度均显著高于非21-三体综合征孕妇(P<0.05)。血清学检查诊断21-三体综合征的灵敏度为75.86%,特异度为94.06%,符合度为94.00%;NT厚度超声的灵敏度为82.76%,特异度为98.32%,符合度为98.27%;血清学检查阳性联合NT厚度超声阳性的灵敏度为68.97%,特异度为99.82%,符合度为99.71%;血清学检查阳性或NT厚度超声阳性的灵敏度为96.55%,特异度为93.53%,符合度为93.54%。血清学检查阳性或NT厚度超声阳性诊断灵敏度显著高于血清学和NT厚度超声诊断(P<0.05)。结论 NT厚度超声和血清学检查均是筛查21-三体综合征的重要手段,二者不同联合方式有助于排除和确诊21-三体综合征,值得临床推广应用。

β-人绒毛膜促性腺激素快速高灵敏化学发光POC检测方法的建立及评价

目的:建立β-人绒毛膜促性腺激素(β-HCG)快速高灵敏化学发光POC检测法(POC-CLIA)并进行评价。方法:采用碱性磷酸酶(Alp)-AMPPD发光体系,以磁微粒(Mps)为固相载体构建POC-CLIA,并评估其灵敏度、精密度、准确度、线性范围、特异性、稳定性、钩状效应和临床应用。结果:β-HCG最低检测限为0.71 mU/ml,线性检测范围为0.710~1.092×10^(4) mU/ml,且在1.7×10^(5) mU/ml内无钩状效应影响。批内和批间变异系数均<10%,可在37℃稳定保存10 d。准确度偏差在±10%之内,结果可靠。干扰物质与β-HCG均无交叉反应。对100例临床血清标本进行检测,与临床标准方法检测结果高度相关(R^(2)=0.997 0)。单个样品检测时间<15 min,且测试通量可达到200 T/h。结论:该方法具有较高应用价值,可广泛用于基层社区,助力基层医疗中妊娠及相关疾病筛查。

超声颅内透明层联合血清AFP、Freeβ-hCG诊断胎儿神经管畸形价值

目的:探讨超声颅内透明层、甲胎蛋白(AFP)及游离绒毛膜促性腺激素(Freeβ-hCG)联合检测在产前胎儿神经管畸形诊断中的应用价值。方法:收集2017年2月-2018年4月在本院产前检查及转诊最终确诊的神经管畸形胎儿孕妇52例为神经管畸形组,同期本院分娩健康胎儿的孕妇222例为正常组。比较两组血清AFP、Freeβ-hCG水平;以胎儿随访/尸检结果为金标准,分析超声颅内透明层、血清AFP、Freeβ-hCG及三者联合诊断神经管畸形效能。结果:神经管畸形组血清AFP、Freeβ-hCG的MoM值均高于正常组(P<0.05);超声颅内透明层、血清AFP、Freeβ-hCG联合检测诊断神经管畸形灵敏度(98.1%)高于血清AFP(78.9%)、Freeβ-hCG(75.0%)(P<0.05),特异度(97.8%)高于超声颅内透明层(87.8%)、血清AFP(78.4%)、Freeβ-hCG(75.7%)(P<0.05),准确度(97.8%)高于超声颅内透明层(88.7%)、血清AFP(78.5%)、Freeβ-hCG(75.6%)(P<0.05)。结论:超声颅内透明层、血清AFP、Freeβ-hCG检测均对胎儿产前神经管畸形有一定诊断价值,三者联合可提高诊断效能。

双标记AFP及Free-β-HCG时间分辨荧光免疫分析法的建立

目的:研制能同时检测人血清AFP和Free-β-HCG的双标记时间分辨荧光免疫分析(TrFIA)试剂盒。方法:铕(Eu3+)标记抗AFP单克隆抗体,用钐(Sm3+)标记抗Free-β-HCG单克隆抗体,采用双抗体夹心法建立AFP/Free-β-HCG双标记TrFIA试剂,对试剂的各项性能指标进行评价。结果:AFP分析灵敏度为0.1U/ml,分析内和分析间的精密度分别为1.2%～5.9%和2.8%～6.3%,检测试剂的测量范围为(0.1～500)U/ml;Free-β-HCG分析灵敏度为0.25ng/ml,分析内和分析间的精密度分别为1.5%～6.2%和3.5%～5.6%,检测试剂的测量范围为(0.25～200)ng/ml。孕妇血样用本试剂盒与进口的同类试剂盒同时检测,AFP和Free-β-HCG的相关系数分别为0.987、0.968,具有较好的一致性。结论:自制AFP/Free-β-HCG双标记TrFIA试剂盒的各项性能指标均能达到临床检测要求,可替代国外同类产品。

腹腔镜下单侧输卵管切除术对输卵管妊娠患者血清β-hCG、Netrin-1及术后妊娠影响

目的:探讨腹腔镜下单侧输卵管切除术对输卵管妊娠患者血清β-人绒毛膜促性腺激素(β-hCG)、神经轴突导向因子-1(Netrin-1)水平及对术后妊娠的影响。方法:选取2021年1月-2022年11月本院行腹腔镜下单侧输卵管切除术患者40例(观察组)、腹腔镜下单侧输卵管开窗取胚术患者40例(对照组),统计手术相关指标、并发症,手术前后血清β-hCG、Netrin-1水平以及术后卵巢储备功能指标,随访术后1年内妊娠情况。结果:观察组术中出血量(72.1±4.8ml)多于对照组(66.1±12.4ml),术后并发症发生率(7.5%)和术后继续异位妊娠率(0)低于对照组(25.0%、17.5%);术后6个月,血清促黄体激素(6.15±1.12mU/ml)高于对照组(5.63±0.95mU/ml),抗缪勒管激素(3.33±0.58ng/ml)低于对照组(3.64±0.79ng/ml)(均P<0.05)。两组术后第3dβ-hCG、Netrin-1水平及术后β-hCG、Netrin-1降低至正常水平时间也无差异(均P>0.05)。结论:腹腔镜下单侧输卵管切除术、输卵管开窗取胚术均能有效清除异位着床组织,但腹腔镜下单侧输卵管切除术术后并发症和再次异位妊娠风险更低,但存在术中出血量多、损伤卵巢储备功能风险。