ObjectiveTo investigate the effect and mechanism of polysaccharide in water extract of Cyclocarya paliurus （CPWP） in inhibiting benign prostatic hyperplasia （BPH）. MethodsCPWP was obtained by heating reflux， aqueous extraction， alcohol precipitation， and freeze drying. The chemical composition and structural properties of CPWP were analyzed by high performance liquid chromatography with 1-pheny-3-methyl-5-pyrazolone pre-column derivatization and infrared spectroscopy. Male SD rats were randomly assigned into control， model， finasteride （ig 5 mg·kg^-1）， and low-， medium-， and high-dose （ig 50， 75， 100 mg·kg^-1） CPWP groups， with 8 rats in each group. The BPH model was established by subcutaneously injecting propionate testosterone in castrated rats. The rats in the drug intervention groups were administrated with corresponding drugs， and those in the control group were administrated with an equal volume of normal saline each day. After 30 consecutive days， the rats were sacrificed， and the prostate tissue was separated and weighed. The effects of drug interventions on the body weight， prostate wet weight， and prostate index of rats were examined. The prostate tissue was stained with hematoxylin-eosin （HE） for observation of pathological changes. Enzyme-linked immunosorbent assay was employed to measure the level of dihydrotestosterone （DHT）， and immunohistochemical staining was used to detect the expression of steroid 5 alpha-reductase 2 （SRD5A2） and Ki67 in the prostate tissue. ResultsCPWP was identified as a saccharide， with characteristic absorption peaks of saccharides. CPWP showed the total sugar content of 44.15% and molecular weight within the range of 5.5-78.8 kDa， being composed of mannose， rhamnose， galacturonic acid， glucose， galactose， xylose， and arabinose. Compared with the control group， the model group had significantly increased prostate wet weight and prostate index （P<0.01）， thick and tall prostate epithelial cells， increased internal wrinkles， papillary expansion into the cavity， an elevation in DHT level in the serum， and up-regulated expression of SRD5A2 and Ki67 in the prostate tissue （P<0.05， P<0.01）. Compared with the model group， both the finasteride and CPWP groups showed decreases in prostate wet weight and prostate index （P<0.05， P<0.01）， thinned prostate epithelial cells， with only a small portion of internal wrinkles and papillary expansion into the cavity， shortened papillary protrusions， lowered DHT level in the serum， and down-regulated expression of SRD5A2 and Ki67 in the prostate tissue （P<0.01）. Moreover， CPWP exerted effects in a dose-dependent manner. ConclusionCPWP inhibits BPH by regulating the expression of SRD5A2.

Medical imaging technology plays a crucial role in clinical diagnosis and treatment. Image compression technology provides robust technical support for the storage and transmission of massive medical imaging data, serving as an effective safeguard for hospital data backup and telemedicine. The technology holds broad application prospects in the medical field, enabling the processing of various imaging modalities, multidimensional imaging, and medical video imaging. This study elaborates on general image and video compression algorithms, the application of compression algorithms in the medical field, and the performance metrics of medical image compression, thereby providing critical technical support for enhancing clinical diagnostic efficiency and data management security.

AIM: To observe the changes of macular retinal structure and microcirculation in patients with pituitary adenoma(PA)by optical coherence tomography(OCT)and optical coherence tomography angiography(OCTA).METHODS: Cross-sectional study. A total of 40 PA patients treated at the department of neurosurgery, Affiliated Hospital of Guangdong Medical University from September 2021 to March 2023 were included as PA group, and 42 age- and gender-matched healthy volunteers were selected as normal control group. All patients underwent visual field, OCT and OCTA examinations, and the correlation of ocular parameters in PA patients was analyzed.RESULTS:The vessel density(VD)of each retinal layer in the macular area of the PA group was lower than that of the normal control group, and the superficial vascular complex(SVC)-VD in the macular area was positively correlated with the thickness of the macular ganglion cell complex(mGCC)(except the nasal side of the inner ring and the lower part of the outer ring; P<0.05). The thickness of mGCC in each quadrant of the macular area and the thickness of the circumpapillary retinal nerve fiber layer(CP-RNFL)in each quadrant were negatively correlated with the mean defect(MD)value of the visual field(P<0.05), and the area of the foveal avascular zone(FAZ)was positively correlated with the MD value(P<0.05).CONCLUSION:The combination of OCT and OCTA can fully understand the microscopic changes of retinal structure and microcirculation function in PA patients, which is of great value in evaluating the preoperative visual function of PA patients.

Diabetes mellitus(DM)is an endocrine metabolic disease mainly characterized by chronic hyperglycemia,which seriously threatens the health and quality of life of human beings,and with the improvement of living standard and unhealthy lifestyle in China,the incidence of DM continues to rise and tends to be younger,so it is urgent to carry out in-depth research on hypoglycemic treatment.DM is pathologically based on absolute or relative insulin deficiency,and there is no radical cure for it,and Western medicine mostly adopts insulin injection or oral hypoglycemic drugs for symptomatic treatment,which is effective but prone to toxic side effects in long-term use.Chinese medicine has the advantages of multi-path and multi-target in treating DM,and plays a role in lowering blood sugar by promoting insulin secretion,improving insulin resistance,regulating glucolipid metabolism and anti-oxidative stress,etc.Its efficacy is remarkable and the rate of toxic side effects is low.In recent years,there have been more studies on the mechanism of action of traditional Chinese medicine and compound prescriptions on animal models of DM.By reviewing the relevant literature in recent years,the author has systematically sorted out the mechanism of hypoglycemic action of single Chinese medicine,traditional Chinese medicine compound prescriptions,effective components of traditional Chinese medicine and their related experimental designs,from promoting insulin secretion,inhibiting gluconeogenesis,promoting glycogen synthesis,improving insulin resistance,inhibiting glycosidase activity,alleviating oxidative stress damage,inhibiting inflammatory response and regulating intestinal stress.The study and experimental design of the hypoglycemic mechanism of Chinese medicine were summarized in terms of promoting insulin secretion,inhibiting gluconeogenesis,promoting glycogen synthesis,improving insulin resistance,inhibiting glucosidase activity,alleviating oxidative stress damage,inhibiting inflammatory response and regulating intestinal flora,etc.,with a view to providing reference for the wider clinical application of Chinese medicine in hypoglycemia and its in-depth pharmacodynamic study.

Objective:To compare the clinical efficacy of rotator cuff repair combined with transposition of the long head of the biceps tendon in the treatment of massive rotator cuff tears with or without subscapularis injury.Methods:A total of 73 patients with massive rotator cuff tears who underwent arthroscopic rotator cuff repair combined with transposition of the long head of the biceps tendon in the Department of Upper Arm, Sichuan Orthopaedic Hospital from January 2019 to September 2022 were retrospectively analyzed, including 35 males and 38 females, aged 58.8±7.6 years (range, 46-73 years). There were 11 cases on the left side and 62 cases on the right side. Causes of injuries: 6 cases of car accidents, 13 cases of fall injuries, 54 cases of no obvious cause of injury. The patients were divided into subscapularis injury group (37 cases) and no subscapularis injury group (36 cases) according to the subscapularis injury or not. The visual analogue scale (VAS), Constant - Murley score, University of California Los Angeles (UCLA) shoulder score and range of motion were used to evaluate shoulder pain and functional improvement. MRI of the shoulder was taken at the final follow-up and the rotator cuff was assessed for retear using Sugaya grading.Results:All patients successfully completed the operation. The VAS score at 1 year postoperatively in the group without subscapularis injury was 0.58±0.87, which was less than 1.16±1.14 in the group with subscapularis injury ( t=-2.426, P=0.018). The Constant-Murley score and UCLA score at 1 year postoperatively in the group without subscapularis injury were 94.03±6.19 and 32.94±2.59, respectively, which were greater than those of the group with subscapularis injury, which were 86.51±11.96 and 30.38±3.33, and the difference was statistically significant ( P<0.05). Anterior flexion and body external rotation at 1 year postoperatively in the group without subscapularis injury were 137.22°±26.79° and 54.72°±13.20°, which were greater than those in the group with subscapularis injury of 121.08°±22.83° and 38.65°±17.19°, and the difference was statistically significant ( P<0.05), and the difference between the two groups in body internal rotation was not statistically significant ( P>0.05). The subacromial spacing at 1 year postoperatively was 9.4±1.3 mm in the group without subscapularis injury and 9.0±1.5 mm in the group with subscapularis injury, and the difference was not statistically significant ( t=1.318, P=0.192). There were 2 cases of rotator cuff retear 1 year after surgery without subscapular muscle injury and 5 cases of subscapular muscle injury. Conclusion:The clinical efficacy of arthroscopic rotator cuff repair combined with transposition of the tendon of the long head of the biceps tendon in the treatment of massive rotator cuff tears with or without subscapularis muscle injury is satisfactory, and the improvement of pain and function is more obvious in patients without subscapularis muscle injury.

Objective To analyze the epidemiological characteristics of hemorrhagic fever with renal syndrome (HFRS) in Hu'nan Province from 2018 to 2023, providing a scientific basis for formulating prevention and control measures in the future. Methods Descriptive epidemiological methods were used to describe the temporal, spatial, and population distributions of HFRS cases in Hunan Province. Host animal density between indoor and outdoor, host animal density, and virus-carrying status across different years were compared using the Chi-square test. Spearman correlation analysis was used to assess the relationship between human HFRS incidence and host animal rodent density and specimen positivity rate. Results A total of 3 079 cases of HFRS were reported in Hunan Province from 2018 to 2023, with 10 deaths. The average annual incidence rate was 0.75/100 000, and the average annual mortality rate was 0.0024/100 000. HFRS cases showed a bimodal distribution of spring and winter peaks, with cases reported during these peaks accounting for 67.39% of the total cases over six years. The cases were mainly concentrated in Changsha City, Changde City, and Yiyang City. In terms of population distribution, the male-to-female ratio was 2.37∶1, with cases predominantly occurring in the middle-aged and elderly populations, with cases over 40 years old accounting for 79.44% of the total number of cases. Farmers were the primary occupational group affected. The average rodent density in Hunan Province from 2018 to 2023 was 2.88%, with indoor rat density higher than outdoor density. There were statistically significant differences in rat density across different years (χ2=21.301, P<0.01), in the positivity rate of host animals across different years (χ2=22.307, P<0.01), and in the composition of positive rat species and virus subtypes across different habitats (χ2=70.653, 10.627, P<0.01). There was a correlation between the human HFRS incidence and the positivity rate of host animal specimens (r=0.39, P<0.05). Conclusions In recent years, the overall incidence rate of HFRS in Hunan Province has shown an overall downward trend, with seasonal peaks and a higher risk of incidence among farmers. In the future, continuous monitoring should be strengthened, and patriotic health campaigns such as rodent control should be organized before the peak seasons to reduce the risk of disease transmission.

Cryptococcus gattii is a kind of Cryptococcus that infects the lungs and central nervous system through the inhalation of infectious particles such as spores or Cryptococcus yeast cells. The development of clinical disease of Cryptococcus gattii may be determined by the sex, immunity and genetics of the host factors, in which immune system factors play an important role in host injury. Their defects will have serious clinical consequences. Cryptococcus gattii mainly infects the population with normal immune, and the infection of immunosuppressed population is rare. The infection mechanism, molecular types, clinical characteristics, treatment and prognosis of Cryptococcus gattii meningitis were different between the two populations. This article reviews the main differences in different immune status with Cryptococcus gattii meningitis.

OBJECTIVE: To investigate the clinical features and genetic etiology of a case of Turner syndrome (TS) with rapidly progressive puberty. METHODS: A child who had presented at the Pediatric Endocrinology Clinic of the Shenzhen People's Hospital on January 19, 2022 was selected as the study subject. Clinical data of the child were collected. Peripheral blood sample of the child was subjected to chromosomal microarray analysis (CMA) and multiple ligation-dependent probe amplification (MLPA). Previous studies related to TS with rapidly progressive puberty were retrieved from the CNKI, Wanfang Data Knowledge Service Platform, Boku, CBMdisc and PubMed databases with Turner syndrome and rapidly progressive puberty as the keywords. The duration for literature retrieval was set from November 9, 2021 to May 31, 2022. The clinical characteristics and karyotypes of the children were summarized. RESULTS: The child was a 13-year-and-2-month-old female. She was found to have breast development at 9, short stature at 10, and menarche at 11. At 13, she was found to have a 46,X,i(X)(q10) karyotype. At the time of admission, she had a height of 143.5 cm (< P3), with 6 ~ 8 nevi over her face and right clavicle. She also had bilateral simian creases but no saddle nasal bridge, neck webbing, cubitus valgus, shield chest or widened breast distance. She had menstruated for over 2 years, and her bone age has reached 15.6 years. CMA revealed that she had a 58.06 Mb deletion in the Xp22.33p11.1 region and a 94.49 Mb duplication in the Xp11.1q28 region. MLPA has confirmed monosomy Xp and trisomy Xq. A total of 13 reports were retrieved from the CNKI, Wanfang Data Knowledge Service Platform, Boku, CBMdisc and PubMed databases, which had included 14 similar cases. Analysis of the 15 children suggested that their main clinical manifestations have included short stature and growth retardation, and their chromosomal karyotypes were mainly mosaicisms. CONCLUSION The main clinical manifestations of TS with rapidly progressive puberty are short stature and growth retardation. Deletion in the Xp22.33p11.1 and duplication in the Xp11.1q28 probably underlay the TS with rapid progression in this child, which has provided a reference for clinical diagnosis and genetic counselling for her.
Humans ; Female ; Adolescent ; Puberty ; Turner Syndrome/genetics* ; Chromosomes, Human, X ; Karyotyping

OBJECTIVE: To explore the cause for a twin pregnancy with false negative result for 22q11.2 deletion syndrome by expanded non-invasive prenatal testing (NIPT-plus). METHODS: A pregnant woman with twin pregnancy through in-vitro fertilization and negative result of NIPT-plus was selected as the study subject. Amniocentesis was conducted after ultrasonic finding of fetal abnormalities. In addition to conventional G-banded karyotyping, copy number variation sequencing (CNV-Seq) was used to detect chromosomal microdeletion and microduplication. Clinical data of the woman were analyzed to explore the reasons underlying the false negative result. RESULTS: NIPT-plus has yielded a negative result with 11.77 Mb unique reads and 3.05% fetal fraction. Both fetuses had a normal karyotype (46,XY and 46,XX). CNV-seq indicated that one of the fetuses was normal, whilst the other was diagnosed with a 2.58 Mb deletion in the 22q11.2 region. CONCLUSION The false negative result may be attributed to the combined influence of low fetal fraction, high BMI, twin pregnancy through IVF and a relatively small deletion fragment. Ultrasonography exam following a low-risk result of NIPT-plus should not be neglected.
Pregnancy ; Female ; Humans ; Prenatal Diagnosis ; Pregnancy, Twin/genetics* ; DiGeorge Syndrome/genetics* ; DNA Copy Number Variations ; Amniocentesis

Objective:To preliminary explore the potential application value of ultrasound shear wave elastography (SWE) in assessing functional defecation disorders compared with anorectal manometry and X-ray defecography.Methods:From July 2022 to December 2022, the results of SWE, anorectal manometry and X-ray defecography of 39 patients with functional defecation disorders visited Sir Run Run Shaw Hospital, School of Medicine of Zhejiang University were retrospectively analyzed. Non-parametric tests were used to analyze the changes in elastic modulus values of anorectal muscle groups at different phase.Chi-square test and Bland-Altman plots were used to assess the consistency between SWE, X-ray defecography and anorectal manometry in evaluating spastic pelvic floor syndrome, as well as the changes in the anorectal angle measured by SWE and X-ray defecography (from resting phase to contraction phase, resting phase to strain phase (Valsalval maneuver).Results:The elastic modulus values measured by SWE of the puborectalis muscle, internal anal sphincter, and external anal sphincter of patients with functional defecation disorders during strain phase were 32.4 kPa (19.1 kPa, 60.3 kPa), 25.3 kPa (17.0 kPa, 53.8 kPa), and 28.6 kPa (21.3 kPa, 55.1 kPa), respectively, which had no statistically significant differences compared to elastic modulus values in resting phase (33.5 kPa (22.1 kPa, 44.9 kPa), 28.9 kPa (22.4 kPa, 45.1 kPa), and 32.4 kPa (23.1 kPa, 49.4 kPa), all P>0.05). The consistency between SWE and X-ray defecography in the diagnosis of spastic pelvic floor syndrome was poor (Kappa=0.190). The consistency between SWE and anorectal manometry in the diagnosis of dyssynergic defecation was poor (Kappa=0.160). The differences in the changes of anorectal angle detected by SWE and X-ray defecography were within the 95% consistency limit ( P=0.429 and 0.582). Conclusion:SWE is sensitive in evaluating changes in anorectal angle, and it shows good consistency with defecography in assessing angle changes.