OBJECTIVE: To investigate the gene carrier rate and genotype distribution characteristics of thalassemia in the population of Kunming, and compare the differences of red blood cell (RBC) parameters between β⁺ heterozygous carriers, β⁰ heterozygous carriers and healthy population, as well as between different sexes of adults aged 18-45 years. METHODS: A retrospective analysis of 3 195 cases of thalassemia gene screened in the First Affiliated Hospital of Kunming Medical University from April 1, 2020 to March 31, 2022 was performed to detect 21 mutations of β-globin genes which was common in Chinese people using fluorescence PCR melting curve method. Patients with single heterozygous carrying β-thalassemia gene were divided into β⁺ heterozygote group and β⁰ heterozygote group, while the control group consisted of 219 healthy individuals. Four indices, including RBC, hemoglobin (Hb), mean corpuscular volume (MCV), and mean corpuscular hemoglobin (MCH) were collected from all β heterozygous carriers and 219 healthy people, and compared between β⁺ heterozygote group, β⁰ heterozygote group and control group, as well as between β⁺ heterozygous carriers, β⁰ heterozygous carriers and healthy population of different sexes aged 18-45 years. RESULTS: There were 688 cases confirmed thalassemia gene carriers, accounting for 21.53%. Among them, 322 cases were found to have β-globin gene mutations, including 145 cases of β⁺ heterozygote, 151 cases of β⁰ heterozygote, and 14 cases of β⁺ homozygotes as well as β⁺ and β⁰ dual heterozygotes. Additionally, 12 cases were found to have simultaneous mutation or deletion of β-globin and α-globin. The carrier rate of CD26 G>A mutation in β⁺ thalassemia was the highest, accounting for 57.9%, while in β⁰ thalassemia CD17 A>T was the highest, accounting for 46.4%. The erythrocyte parameters of 296 β heterozygous mutation carriers were compared with the normal reference interval, and it was found that 218 cases with RBC value greater than the highest value of reference interval, while 105, 281, and 269 cases with Hb, MCV, and MCH value less than the lowest value of reference interval, respectively. There were significant differences in the 4 erythrocyte parameters between β⁺ heterozygotes, β⁰ heterozygotes and healthy individuals (all P < 0.001), and further comparison between different sexes also showed significant differences (all P < 0.001). CONCLUSIONS The carrier rates of thalassemia gene and β-thalassemia heterozygote are both at high level in Kunming, and there are significant differences in the erythrocyte parameters between β⁺ heterozygous carriers, β⁰ heterozygous carriers and healthy individuals. When genetic counseling, it is necessary to inform and strengthen screening among adults of marriageable age to prevent birth of children with severe thalassemia.
Humans ; beta-Thalassemia/blood* ; Adult ; Heterozygote ; Male ; Female ; beta-Globins/genetics* ; Retrospective Studies ; Middle Aged ; Mutation ; Adolescent ; Genotype ; Erythrocytes ; Erythrocyte Indices ; Young Adult ; China ; Genetic Testing ; Asian People/genetics*

Objective To compare and analyze the application value of brain black blood technology three-dimensional BrainVIEW(3D-BrainVIEW)and conventional three-dimensional turbo field echo T1 weighted imaging(3D-TFE T1WI)in brain metastases of lung cancer.Methods A total of 60 patients with pathologically confirmed lung cancer were selected.All patients underwent brain enhanced MRI using 3D-BrainVIEW and 3D-TFE T1WI.The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of the two groups were compared and analyzed,respectively.The diagnostic efficacy(including number,size,and location)of the two groups of images in detecting brain metastases was evaluated by two experienced radiologists via double-blind method.Results The diagnostic consistency between the two radiologists was excellent[intraclass correlation coefficient(ICC)=0.998,P<0.001].There were significant differences in SNR,CNR,and the number and location of brain metastases between 3D-BrainVIEW sequence and 3D-TFE T1WI sequence(P<0.05),and 3D-BrainVIEW sequence was significantly superior to 3D-TFE T1WI sequence.In addition,the number of brain metastases detected by 3D-Brain VIEW sequence was significantly higher than that detected by 3D-TFE T1WI sequence in lesions with minimum diameter(Dmin)<5 mm(P<0.001).There was no difference in the number of lesions detected by the two sequences in lesions with Dmin>5 mm(P>0.05).Conclusion The SNR and CNR of 3D-Brain VIEW enhanced scan images are significantly higher than those of 3D-TFE T1WI,which has higher detection efficiency for lung cancer brain metastases,and can effectively reduce misdiagnosis caused by microvascular enhance-ment,which has high clinical application value.

Objective To compare and analyze the application value of brain black blood technology three-dimensional BrainVIEW(3D-BrainVIEW)and conventional three-dimensional turbo field echo T1 weighted imaging(3D-TFE T1WI)in brain metastases of lung cancer.Methods A total of 60 patients with pathologically confirmed lung cancer were selected.All patients underwent brain enhanced MRI using 3D-BrainVIEW and 3D-TFE T1WI.The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of the two groups were compared and analyzed,respectively.The diagnostic efficacy(including number,size,and location)of the two groups of images in detecting brain metastases was evaluated by two experienced radiologists via double-blind method.Results The diagnostic consistency between the two radiologists was excellent[intraclass correlation coefficient(ICC)=0.998,P<0.001].There were significant differences in SNR,CNR,and the number and location of brain metastases between 3D-BrainVIEW sequence and 3D-TFE T1WI sequence(P<0.05),and 3D-BrainVIEW sequence was significantly superior to 3D-TFE T1WI sequence.In addition,the number of brain metastases detected by 3D-Brain VIEW sequence was significantly higher than that detected by 3D-TFE T1WI sequence in lesions with minimum diameter(Dmin)<5 mm(P<0.001).There was no difference in the number of lesions detected by the two sequences in lesions with Dmin>5 mm(P>0.05).Conclusion The SNR and CNR of 3D-Brain VIEW enhanced scan images are significantly higher than those of 3D-TFE T1WI,which has higher detection efficiency for lung cancer brain metastases,and can effectively reduce misdiagnosis caused by microvascular enhance-ment,which has high clinical application value.

This study was designed to investigate the effect of Sijunzi decoction(SJZD)on the expression of inflammatory factors and autophagic proteins in the hippocampus of senescence-accelerated mouse prone 8(SAMP8)mice and its mechanism.SAMR1 mice were used as control group,and 32 SAMP8 mice were divided into model group,donepezil group,SJZD low and SJZD high dose treatment groups.Y-maze experiment was performed to detect changes in mouse memory function;the expression of NF-κB was detected by immunohistochemistry;the levels of TNF-α,IL-1β,IL-6 were detected by ELISA;the expression of A[3,caspse-1,beclin-1 and LC3-Ⅱproteins in hippocampal tissue were detected by Western blotting.Compared with the control group,the model group mice showed a decrease in total number of entries and alternations,an elevation in the levels of TNF-α,IL-1β,IL-6,Aβ protein and caspse-1 protein,and downregulation in the expression of beclin-1 and LC3-Ⅱ proteins.Both donepezil and SJZD(low-dose group and high-dose group)can reverse these changes in model mice.In conclusion,the mechanism of SJZD in treating Alzheimer's disease may relate to the correction of central hippocampal inflammatory factors and autophagy dysfunction.

Objective:To investigate the diagnosis and differential diagnosis methods of chronic mature small B-cell lymphoma involving the bone marrow and peripheral blood.Methods:The clinical data of 27 patients with mature small B-cell lymphoma involving the bone marrow and peripheral blood (seven subtypes phase IV) who received treatment in the Kunshan Third People's Hospital from February 2015 to June 2021 were retrospectively analyzed. The application value of different detection methods in the diagnosis of mature small B-cell lymphoma involving the bone marrow and peripheral blood was analyzed.Results:The majority of patients' peripheral blood was mainly characterized by an increase in the ratio or absolute value of lymphocytes. In terms of cell morphology, mature lymphocytes were mainly small to medium in size. A few bone marrow smears or peripheral blood smears show characteristic changes in cell morphology. Flow cytometry results showed that among the cohort of 15 patients presenting CD5 expression, 11 patients had chronic lymphocytic leukemia, 1 patient had mantle cell lymphoma, 1 patient had splenic diffuse red pulp small B-cell lymphoma, and 2 patients had B-cell chronic lymphoproliferative disorders (unclassified). Among 12 patients presenting no CD5 expression, 8 had Waldenstr?m's macroglobulinemia, 3 had splenic marginal zone lymphoma, and 1 had follicular lymphoma. Among the 2 patients presenting CD5-CD10 expression, 1 patient had follicular lymphoma, and 1 patient had Waldenstr?m's macroglobulinemia. One patient with splenic diffuse red pulp small B-cell lymphoma expressed CD5, CD11c, and CD103 in addition to pan-B-cell markers, while BRAF V600E mutation detection and immunohistochemical staining for tartrate-resistant acid phosphatase and annexin-1A showed negative expression.Conclusion:This type of lymphoproliferative disease is a general term for lymphoma that has various different molecular and biological characteristics. Its diagnosis and differential diagnosis need to comprehensively consider the clinical characteristics of the patient, relevant laboratory tests, cell morphology, flow cytometry detection results, reasonable use of fluorescence in situ hybridization, molecular biology, special chemistry, and bone marrow immunohistochemistry. In a few cases, diagnosis of the lymphoproliferative disease still relies on non-bone marrow involvement and tissue biopsy.

The number of benign prostatic obstruction (BPO) patients in China is increasing, and patients tend to be younger and younger. The former "gold standard" scheme of transurethral resection of the prostate (TURP) is more suitable for patients with prostate volume ranging from 40 mL to 80 mL, which may lead to excessive resection in patients with small prostate volume and low efficiency in patients with large prostate volume. New minimally invasive techniques have been introduced,including prostate artery embolization, laser surgery (such as holmium, green, diode, and thulium), minimally invasive simple prostatectomy, transperineal laser ablation, prostatic urethral lift,and robot-assisted water jet ablation of the prostate. These methods are alternatives to TURP and increasingly used in the treatment of BPO. This article reviewed the advances in minimally invasive treatment of BPO.

Bladder cancer (BCa) is one of the most common cancers in urology,whose pathogenesis is still unclear. Methyltransferase-like 3(METTL3) is the most important part of N6-methyladenosine methyltransferase complex (m6A MTC),which mediates the methylation of mRNA to regulate the stability and translation process of mRNA. Researches have shown that METTL3 can promote BCa development via AFF4/NF-κB/MYC signaling network,which involves many kinds of signaling molecules. In addition,METTL3 can affect the expressions of AFF4,NF-κB and MYC,so as to affect their downstream signaling pathways and finally promote the malignant progression of tumor.

Gastric cancer (GC) is associated with high morbidity and mortality rates. Thus, early diagnosis is important to improve disease prognosis. Endoscopic assessment represents the most reliable imaging method for GC diagnosis; however, it is semi-invasive and costly and heavily depends on the skills of the endoscopist, which limit its clinical applicability.Therefore, the search for new sensitive biomarkers for the early detection of GC using noninvasive sampling collection methods has attracted much attention among scientists.Urine is considered an ideal biofluid, as it is readily accessible, less complex, and relatively stable than plasma and serum. Over the years, substantial progress has been made in screening for potential urinary biomarkers for GC. This review explores the possible applications and limitations of urinary biomarkers in GC detection and diagnosis.

ObjectiveTo study the expression changes of Lon protein and mitochondrial dynamics-related protein in the hippocampus of SAMP8 mice and provide a theoretical basis for the treatment of Alzheimer's disease by invigorating the spleen and supplementing Qi. MethodEight 3-month-old SAMR1 mice were used as the normal group， and 32 3-month-old SAPM8 mice were divided into model group， western medicine group （0.013 g·kg^-1）， low-dose Si Junziwan group （3.24 g·kg^-1）， and high-dose Si Junziwan group （12.56 g·kg^-1）， with 8 mice in each group. The western medicine group was gavaged with donepezil， and the Si Junziwan low- and high-dose groups were gavaged with Si Junziwan for 30 days. The positioning navigation experiment of the water maze was started on the 25^th day， and the space exploration experiment of the water maze was started on the 30^th day. On the 30^th day， the protein expression of mitofusin 2 （MFN2） was detected by immunohistochemistry， the expression of adenosine 5'-monophosphate （AMP）-activated protein kinase （AMPK） was detected by enzyme-linked immunosorbent assay （ELISA）， the content of ATP was detected by colorimetry， the microstructure of neuron mitochondria was detected by electron microscope， and the expressions of Aβ protein， Lon protein， dynamin-related protein 1 （DRP1） protein， and MFN1 protein were detected by Western blot. ResultAs compared with the normal group， the latency escape period increased， the number of crossings decreased， the expression of AMPK increased， and the content of ATP decreased in the model group. The expressions of Aβ protein and DRP1 protein increased （P<0.01）， whereas the expressions of Lon protein， MFN1 protein decreased in the model group （P<0.05，P<0.01）， and MFN2 protein decreased. The vacuolation of mitochondria increased and the cristae broke in the model group. As compared with model group， the time of the latent escape period decreased （P<0.01）， and the number of crossings increased in the low-dose and high-dose Si Junziwan groups （P<0.05）. The expression of AMPK （P<0.01） decreased， the content of ATP increased （P<0.01）， the expression of Aβ and DRP1 protein decreased （P<0.05， P<0.01）， and the expression of MFN1 protein was up-regulated （P<0.05） in high-dose Si Junziwan groups. The vacuolation was more obvious in the low-dose Si Junziwan group， whereas the vacuolation was restored and the ridge was clear in the high-dose Si Junziwan group. ConclusionSi Junziwan treats Alzheimer's disease by up-regulating the protein expression of Lon， correcting the disorder of mitochondrial division and fusion protein， and changing the memory function of SAMP8 mice.

Objective:To analyze the clinicopathological characteristics, diagnosis and prognosis of meningioangiomatosis (MA), and to investige the possible origion of spindle cells.Methods:Seventeen cases of MA were collected at Xuanwu Hospital of Capital Medical University and the First Affiliated Hospital of Fujian Medical University, from June 2012 to March 2020. The clinical manifestations, radiologic, histopathologic, immunohistochemical features and patients′ outcome were analyzed. The presumed origin of spindle cells was evaluated by immunohistochemical staining.Results:Of the 17 patients, 9 were males and 8 were females. The age ranged from 3 to 56 years old. Thirteen patients presented with seizure as the initial symptom. The lesions were solitary and located in the cerebral cortex. Histopathologically, there were proliferation of small blood vessels and perivascular spindle cells in the cerebral cortex. The spindle cells had no obvious atypia, mitoses and necrosis. Four cases were combined with transitional meningioma. Immunohistochemically, the proliferative perivascular spindle cells were positive for vimentin in all cases, and focally positive for EMA and SSTR2. Ki-67 proliferation index was low. Neurofibrillary tangles were demonstrated by AT8. All 17 patients received surgical treatment and were followed up for one to 93 months. None had seizure attacks or tumor recurrence.Conclusions:MA is a rare slow-growing intracranial lesion, and the perivascular spindle cells could be derived from meningothelial cells, and MA is often associated with degeneration of the cerebral cortex and meningioma. The patients have good prognosis after surgical treatment.