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1.
Chinese Journal of Contemporary Pediatrics ; (12): 1028-1033, 2023.
Article Dans Chinois | WPRIM | ID: wpr-1009842

Résumé

OBJECTIVES@#To investigate the efficacy and required indicators of Children Neuropsychological and Behavioral Scale-Revision 2016 (CNBS-R2016) in the differential diagnosis of autism spectrum disorder (ASD) and global developmental delay (GDD).@*METHODS@#A total of 277 children with ASD and 415 children with GDD, aged 18-48 months, were enrolled as subjects. CNBS-R2016 was used to assess the developmental levels of six domains, i.e., gross motor, fine motor, adaptive ability, language, social behavior, and warning behavior, and a total of 13 indicators on intelligence age and developmental quotient (DQ) were obtained as the input features. Five commonly used machine learning classifiers were used for training to calculate the classification accuracy, sensitivity, and specificity of each classifier.@*RESULTS@#DQ of warning behavior was selected as the first feature in all five classifiers, and the use of this indicator alone had a classification accuracy of 78.90%. When the DQ of warning behavior was used in combination with the intelligence age of warning behavior, gross motor, and language, it had the highest classification accuracy of 86.71%.@*CONCLUSIONS@#Machine learning combined with CNBS-R2016 can effectively distinguish children with ASD from those with GDD. The DQ of warning behavior plays an important role in machine learning, and its combination with other features can improve classification accuracy, providing a basis for the efficient and accurate differential diagnosis of ASD and GDD in clinical practice.


Sujets)
Enfant , Humains , Trouble du spectre autistique/psychologie , Diagnostic différentiel , Apprentissage machine , Comportement social
2.
Chinese Journal of Disease Control & Prevention ; (12): 101-104, 2020.
Article Dans Chinois | WPRIM | ID: wpr-793326

Résumé

Objective To investigate the sexual behavior types, condom use and influencing factors of gonorrhea patients in Yunnan Province, and to provide evidence for the adjustment of sexually transmitted disease (STD) prevention and control strategy. Methods A cross-sectional study was carried out to investigate gonorrhea patients in 14 STD clinics in 7 more prevalent prefectures (cities) of Yunnan Province. A questionnaire survey was conducted to investigate the socio-demographic and sexual characteristics of the patients in a one-to-one way. Multiple Logistic regression model was used to analyze the influencing factors of sexual behavior. Results A total of 179 cases of gonorrhea were investigated. The average age was (29.01±8.93) years old. 95.53% (171/179) patients were 40 years old and 88.27% were male patients (158/179). Unmarried patients accounted for 55.31% (99/179). Service and self-employed patients accounted for 34.64% (62/179) and 23.46% (42/179) respectively. The rate of sexual intercourse with opposite sex was 98.32% (176/179), the rate of men who have sex with men was 1.68% (3/179) and the rate of having more than two sexual partners was 27.93% (50/179). The rate of sexual intercourse between temporary partners, spouses/fixed partners and commercial partners were 53.07% (95/179), 37.99% (68/179) and 8.94% (16/179) respectively. Recent sexual activity had lower condom use rate, 17.89% (17/95), 19.12% (13/68) and 18.75% (3/16) respectively. The main ways for gonorrhea patients to make temporary partners were friend introductions or gatherings, accounting for 66.32% (63/95). Condom use in male patients was worse than that in female patients (OR=0.234, 95% CI: 0.084-0.656, P=0.006). Conclusions The patients with gonorrhea were mainly unmarried young adults. The main risk behaviors were unprotected behaviors between heterosexual temporary and spouse/fixed sexual partners. The condom use consciousness was generally low. The promotion of safe sex education for young adults should be further strengthened, with special attention to the use of condoms for temporary sexual behavior and spouse/fixed sexual intercourse.

3.
National Journal of Andrology ; (12): 205-209, 2013.
Article Dans Chinois | WPRIM | ID: wpr-350910

Résumé

<p><b>OBJECTIVE</b>To investigate the expression of the Eag1 K( +) channel in the prostate cancer (PCa) tissue, its correlation with the development and progression of PCa, and whether it could be a target for the diagnosis and treatment of PCa.</p><p><b>METHODS</b>We used RT-PCR and immunohistochemistry to determine the mRNA and protein expressions of the Eag1 K(+) channel in the normal peritumoral tissue of androgen-dependent PCa (ADPCa) (group A) and androgen-independent PCa (AIPCa) (group B) as well as in the tumorous tissue of ADPCa (group C) and AIPCa (group D).</p><p><b>RESULTS</b>The relative coefficients of the mRNA expression of the Eag1 K(+) channel were 0.265 +/- 0.413, 0.167 +/- 0.511, 2.673 +/- 2.988 and 2.815 +/- 2.901 in groups A, B, C and D, respectively, increased significantly in the latter two groups (P < 0.05). The positive rates of the protein expression of the Eag1 K (+) channel were significantly higher in groups C (88.9%) and D (86.7%) than in A (7.4%) and B (6.7%) (P < 0.05).</p><p><b>CONCLUSION</b>The Eag1 K(+) channel might be involved in the pathophysiological processes of PCa, and is expected to be a valuable target for the diagnosis and treatment of PCa.</p>


Sujets)
Humains , Mâle , Canaux potassiques éther-à-go-go , Métabolisme , Immunohistochimie , Prostate , Métabolisme , Anatomopathologie , Tumeurs de la prostate , Métabolisme , Anatomopathologie , ARN messager , Génétique , RT-PCR
4.
National Journal of Andrology ; (12): 116-120, 2013.
Article Dans Chinois | WPRIM | ID: wpr-256952

Résumé

<p><b>OBJECTIVE</b>To investigate the expressions of leptin and its receptor in the epididymis of experimental varicocele (EV) rats.</p><p><b>METHODS</b>Forty male Sprague-Dawley rats were randomly divided into four groups: 4-week EV (n = 12), 8-week EV (n = 12), 4-week control (n = 8), and 8-week control (n = 8). EV models were established by partial ligation of the left renal vein. The expressions of leptin and its receptor in the rat epididymis were measured by immunohistochemistry, and their mRNA expressions determined by real-time quantitative PCR.</p><p><b>RESULTS</b>The expressions of leptin and its receptor in the epididymis were significantly higher in the 4- and 8-week EV groups than in the 4- and 8-week control groups (P < 0.01), with no significant difference between the two EV groups (P > 0.05). So were their mRNA expressions in the former two than in the latter two groups (P < 0.01), with no significant difference between the former two (P > 0.05).</p><p><b>CONCLUSION</b>The expressions of leptin and its receptor are markedly increased in the epididymis of varicocele rats. Leptin may be involved in the mechanisms of varicocele inducing male infertility.</p>


Sujets)
Animaux , Mâle , Rats , Modèles animaux de maladie humaine , Épididyme , Métabolisme , Leptine , Métabolisme , Rat Sprague-Dawley , Récepteurs à la leptine , Métabolisme , Varicocèle , Métabolisme
5.
Chinese Journal of Gastrointestinal Surgery ; (12): 574-577, 2012.
Article Dans Chinois | WPRIM | ID: wpr-321575

Résumé

<p><b>OBJECTIVE</b>To compare the impact of traditional and fast bowel preparation on the changes of gut flora in the patients following colorectal resection.</p><p><b>METHODS</b>Sixty patients undergoing colorectal resection from March 2010 to March 2011 in the Nanfang Hospital were randomly divided into the control group(n=27, 3 days of bowel preparation) and the experimental group(n=33, 1 day of bowel preparation). Fresh feces were collected before bowel preparation and on the first defecation after surgery. The postoperative changes in gut flora and septic complications were observed.</p><p><b>RESULTS</b>Gut flora disturbance was found in both groups. The postoperative population of Bifidobacterium and Lactobacillus decreased significantly(P<0.05), and the decrease was more significant in the experimental group compared to the control group(P<0.05), while E.coli and Staphylococcus were much higher than the preoperative level(P<0.05), which was more significant in the control group. The incidence of postoperative infection was 9.1%(3/33) in the experimental group, which was significantly lower than 29.6%(8/27) in the control group(P<0.05).</p><p><b>CONCLUSION</b>Fast bowel preparation is effective in reducing gut flora disturbance and the incidence of postoperative infection.</p>


Sujets)
Femelle , Humains , Mâle , Adulte d'âge moyen , Tumeurs colorectales , Microbiologie , Chirurgie générale , Procédures de chirurgie digestive , Lavement (produit) , Méthodes , Fèces , Microbiologie , Microbiote , Période postopératoire , Soins préopératoires , Études prospectives
6.
Chinese Medical Journal ; (24): 1736-1740, 2010.
Article Dans Anglais | WPRIM | ID: wpr-241728

Résumé

<p><b>BACKGROUND</b>While the abnormal appearance of the concealed penis has been well recognized, the effect of buried penis on the structure and function of corpus cavernosum has not been well studied. To explore this issue, we established a rat model and evaluated the effect of buried penis on cavernosum weight, contents and ultrastructure of tissue, and nitric oxide synthase (NOS) activity.</p><p><b>METHODS</b>Two hundred and ten rats were randomly divided into 3 equal cohorts for 2, 4 and 6 months study (groups A, B and C). Each group was randomly divided into buried group (n = 40), control group (n = 15), and normal group (n = 15), respectively. Intra-purse-string suture of the root of the penis was used to establish the model. Macroscopic development was judged by measuring the weight of the corpus cavernosum. Masson's trichrome staining was performed for observing microstructure while a transmission electron microscope was used for observing ultrastructure. The NOS activity was detected by a NOS activity assay kit.</p><p><b>RESULTS</b>Buried penis had no significant influence on the appearance and weight of the corpus cavernosum. Buried penis resulted in decreased smooth muscle content (P > 0.05 in group A, and P < 0.05 in groups B and C) and increased fibrous connective tissue content (P > 0.05 in groups A and B, and P < 0.05 in group C) compared with the normal and control groups. Ultrastructural abnormalities of corpus cavernosum were observed in the 6-month buried group. Moreover, there was decrease of NOS activity in groups B and C (P < 0.05 in group B and P < 0.01 in group C) when compared with the normal and control groups.</p><p><b>CONCLUSION</b>Buried penis affects the structure and function of corpus cavernosum in rats and the effect is positively correlated with the buried time, but there is no significant effect on the macroscopic development.</p>


Sujets)
Animaux , Mâle , Rats , Nitric oxide synthase , Métabolisme , Pénis , Anatomopathologie , Rat Sprague-Dawley
7.
National Journal of Andrology ; (12): 310-313, 2010.
Article Dans Chinois | WPRIM | ID: wpr-295069

Résumé

<p><b>OBJECTIVE</b>To explore the influence of concealed penis on the morphology of the corpus cavernosum in rats.</p><p><b>METHODS</b>Rat models of concealed penis were established by intra-pocket-suture of the root of the penis. Fifty rats were equally assigned to Groups A (2-month) and B (4-month), each further divided into a buried (n = 15) and a normal subgroup (n = 10). Changes in the morphology of the penile cavernous tissue were observed under the light microscope and transmission electron microscope.</p><p><b>RESULTS</b>Compared with Group A, Group B showed significant ultra-structural pathological changes in the corpus cavernosum, including abnormal arrangement of endothelial and smooth muscle cells, massive hyperplasia of interstitial tissues, narrowed cavernous sinus, atrophic smooth muscle cells, degenerated mitochondria, dilated endoplasmic reticula, decreased dense bodies and contractile fibers, and cytoplasmic vacuolization. No significant differences were found in the appearance and weight of the corpus cavernosum between the buried and normal groups (P > 0.05).</p><p><b>CONCLUSION</b>Concealed penis does not significantly affect the appearance and weight of the corpus cavernosum, but causes ultra-structural pathological changes in it with the lengthening of time.</p>


Sujets)
Animaux , Mâle , Rats , Pénis , Anatomopathologie , Phimosis , Anatomopathologie , Rat Sprague-Dawley
8.
National Journal of Andrology ; (12): 411-413, 2008.
Article Dans Chinois | WPRIM | ID: wpr-319223

Résumé

<p><b>OBJECTIVE</b>To explore the influence of buried penis on nitric oxide synthase (NOS) activity of the corpus cavernosum in rats.</p><p><b>METHODS</b>The experimental model of concealed penis was established by intra-pocket-suture of the root of the penis. Two hundred and forty rats were equally randomized into a 2, a 4 and a 6 months group, each further divided into a buried (n = 50), a sham operation (n = 15) and a normal subgroup (n = 15). The development of the corpus cavernosum was surveyed by measuring its weight and the ratio to the body weight, followed by determination of NOS activity in the corpus cavernosum by spectrophotometry.</p><p><b>RESULTS</b>No significant differences were found in the corpus cavernosum weight, the body weight and their ratio among the buried, sham operation and normal groups in any experimental stage (P > 0.05). Buried penis decreased NOS activity in the 4- and 6-month groups (P < 0.05 and P < 0.01) compared with the normal group, but effected no significant change in the 2-month group.</p><p><b>CONCLUSION</b>Buried penis decreases the NOS activity of the corpus cavernosum in a positively time-related manner, but with no significant influence on its appearance and weight.</p>


Sujets)
Animaux , Mâle , Rats , Modèles animaux de maladie humaine , Dysfonctionnement érectile , Nitric oxide synthase , Métabolisme , Pénis , Malformations , Répartition aléatoire , Rat Sprague-Dawley , Spectrophotométrie
9.
National Journal of Andrology ; (12): 805-809, 2008.
Article Dans Chinois | WPRIM | ID: wpr-309790

Résumé

<p><b>OBJECTIVE</b>To investigate the impact of experimental varicocele (EV) on the ipsilateral testis in rats.</p><p><b>METHODS</b>EV was induced by partial ligation of the left renal vein in male SD rats, the control rats subjected to sham operation, and the testes of the EV models and controls were extirpated 6, 12, and 18 weeks later. Johnson's score, ultrastructure of seminiferous tubules, intratesticular testosterone concentration (ITC) and germ cell apoptotic index (AI) of each left testis were evaluated.</p><p><b>RESULTS</b>Johnson's scores were (6.92 +/- 0.52), (4.83 +/- 0.41) and (2.95 +/- 0.26), ITCswere (6.32 +/- 0.85), (5.17 +/- 0.76) and (4.11 +/- 0.69) and AIs were (5.32 +/- 1.23), (15.21 +/- 0.97) and (21.13 +/- 1.12) respectively in the 6 w , 12 w and 18 w EV groups, significantly lower than in the corresponding control groups, (9.56 +/- 0.35, 9.63 +/- 0.31, 9.39 +/- 0.46), (9.64 +/- 1.23, 9.38 +/- 0.69, 9.73 +/- 0.49) and (3.21 +/- 1.15, 3.43 +/- 1.21, 3.61 +/- 1. 15) (P < 0.05), the former two showing a gradual decline while the latter a significant elevation with the increasing duration of varicocele. The damage to the ultrastructure of seminiferous tubules was aggravated with the prolonging of varicocele.</p><p><b>CONCLUSION</b>EV can cause a progressive decline of ITC, dyszoospermia and increased AI of germ cells.</p>


Sujets)
Animaux , Mâle , Rats , Apoptose , Modèles animaux de maladie humaine , Infertilité masculine , Rat Sprague-Dawley , Épithélium séminifère , Biologie cellulaire , Testicule , Chimie , Métabolisme , Testostérone , Métabolisme , Varicocèle , Métabolisme
10.
Chinese Acupuncture & Moxibustion ; (12): 156-158, 2008.
Article Dans Chinois | WPRIM | ID: wpr-292887

Résumé

<p><b>OBJECTIVE</b>To probe into an effective method for treatment of hypertension.</p><p><b>METHODS</b>Eighty cases of hypertension were treated with sticking Jiangya Wentie Plan at Shenque (CV 8) and Yongquan (KI 1) as main.</p><p><b>RESULTS</b>Forty-eight were markedly effective, 29 cases were effective, 3 cases were ineffective, with an total effective rate of 96.25%.</p><p><b>CONCLUSION</b>Acupoint sticking of Jiangya Wentie Plan has obvious therapeutic effect on hypertension.</p>


Sujets)
Sujet âgé , Femelle , Humains , Mâle , Adulte d'âge moyen , Points d'acupuncture , Thérapie par acupuncture , Méthodes , Hypertension artérielle , Thérapeutique
11.
National Journal of Andrology ; (12): 879-882, 2007.
Article Dans Chinois | WPRIM | ID: wpr-232047

Résumé

<p><b>OBJECTIVE</b>To establish a stable rat experimental model of concealed penis for studying the effect of buried penis on the structure and function of the corpus cavernosum.</p><p><b>METHODS</b>Ninety male SD rats, aged 2 weeks, were randomly divided into 3 groups (A, B and C) of equal number. Groups A and B underwent surgery with intra-purse suture of the penile root and folding suture of the prepuce, respectively, to bury the penis, while Group C were included as sham operation controls.</p><p><b>RESULTS</b>In Group A, death resulted in 4 cases from acute post-operative urine retention, failure in burying the penis occurred in 5 cases because of soft tissue ulceration around the urethral orifice and in another 3 due to loose concealment. In Group B, 1 died from deep anesthesia and 2 from acute post-operative urine retention. With the penile development and erection, 7 in Group A and 10 in Group B protruded the penis in different stages. In Group C, 1 died from deep anesthesia. The operations succeeded in all the other rats in Groups A and B, with the success rates of 36.7% and 56.7%, respectively. And the concealment could be relieved any time during the experiment.</p><p><b>CONCLUSION</b>The experimental rat model of concealed penis can be successfully established by both intra-purse suture of the penile root and folding suture of the prepuce, which is stable and similar to the natural course of this disorder in human.</p>


Sujets)
Animaux , Humains , Mâle , Rats , Modèles animaux de maladie humaine , Pénis , Malformations , Chirurgie générale , Répartition aléatoire , Rat Sprague-Dawley , Malformations urogénitales
12.
National Journal of Andrology ; (12): 1023-1027, 2007.
Article Dans Chinois | WPRIM | ID: wpr-232018

Résumé

Recent years have seen great progress in the researches on the pharmacotherapy of female sexual dysfunction( FSD). Estrogen replacement therapy is effective on female sexual pain and dyspareunia; androgen can improve female hyposexuality; and a variety of drugs and medication forms are being studied for their efficacy on FSD, including the 5-phosphodiesterase inhibitor, dopamine receptor stimulant, prostaglandin E1, adrenergic receptor blocker, some traditional Chinese medicine, and so on, which have yielded lots of inspiring findings.


Sujets)
Femelle , Humains , Traitement médicamenteux , Méthodes , Troubles sexuels d'origine physiologique , Traitement médicamenteux , Dysfonctionnements sexuels psychogènes , Traitement médicamenteux
13.
National Journal of Andrology ; (12): 39-42, 2006.
Article Dans Chinois | WPRIM | ID: wpr-338372

Résumé

<p><b>OBJECTIVE</b>To screening specific biomarkers of oligospermic candidates from seminal plasma by proteomics technology.</p><p><b>METHODS</b>The protein spectra of 20 seminal plasma from oligospermic patients and healthy male individuals were analyzed by surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF-MS) to compare different protein expressions.</p><p><b>RESULTS</b>Compared with normal control group, a specific protein peak of molecular weight 11 022.9 in the protein spectra of oligospermic patients'semen on H4 protein-chip reduced significantly, but the protein peak of molecular weight 11 507.4 elevated apparently. For SAX-2 protein-chip, a specific protein peak of molecular weight 16 751.6 in the protein spectra of oligospermic patients' semen elevated significantly.</p><p><b>CONCLUSION</b>Screening specific proteins in seminal plasma of oligospermic patients is important for understanding the mechanism of oligospermia and screening suspected oligospermic individuals.</p>


Sujets)
Adulte , Humains , Mâle , Marqueurs biologiques , Oligospermie , Diagnostic , Analyse par réseau de protéines , Protéines , Protéomique , Méthodes , Sperme , Chimie , Spectrométrie de masse MALDI
14.
Chinese Acupuncture & Moxibustion ; (12): 625-628, 2006.
Article Dans Chinois | WPRIM | ID: wpr-348484

Résumé

<p><b>OBJECTIVE</b>To study on effects of injection of Huangqi Injectio into Zusanli (ST 36) on the hospital infection and immune function in the patient of schizophrenia.</p><p><b>METHODS</b>Thirty inpatients of chronic schizophrenia were treated with injection of Huangqi Injectio into bilateral Zusanli (ST 36), 2 mL each point, thrice each week, for 8 weeks. Relative immune indexes and the hospital infection were investigated.</p><p><b>RESULTS</b>The hospital infection and the sub-infection were 4 cases (13.3%), 7 cases-times (23.3%) in the injection group; and 9 cases (15.0%), 19 cases-times (31.7%) in the control group, respectively, with no significant difference between the two groups (P>0.05). The drug-administration duration was 7.77 days/case and 11.87 days/case in the two groups, respectively (P<0.01). In the injection group, as compared with that of last 3 years the duration was 7.77 days/case and 14.08 days/case (P<0.01). IgG, IgA, IgM and T-cell subgroups did not have significant changes, but there was the most different value before and after injection in SIL-2R of the no-infection group, and the longer the drug administration duration, the smaller the different values.</p><p><b>CONCLUSION</b>Injection of Huangqi Injectio into Zusanli (ST 36) has definite effect for prevention of the hospital infection in inpatients of chronic schizophrenia, and SIL-2R is a valuable index for investigation of the hospital of infection.</p>


Sujets)
Adulte , Sujet âgé , Humains , Mâle , Adulte d'âge moyen , Points d'acupuncture , Astragalus , Infection croisée , Médicaments issus de plantes chinoises , Immunoglobulines , Sang , Récepteurs à l'interleukine-2 , Sang , Schizophrénie , Allergie et immunologie , Sous-populations de lymphocytes T , Allergie et immunologie
15.
Journal of Zhejiang University. Science. B ; (12): 208-212, 2005.
Article Dans Anglais | WPRIM | ID: wpr-316351

Résumé

Mg2Ni0.8Cr0.2-x wt.% CoO/Al2O3 (x=0.5, 1, 2 and 3) composites were prepared by mechanically milling sintered Mg2Ni0.8Cr0.2 alloy and CoO/Al2O3 compound for 45 h. The addition of CoO/Al2O3 compound resulted in the good kinetics properties of hydriding/dehydriding reaction of the composites. The composite with 1.0 wt.% CoO/Al2O3 catalyst could reach the maximum hydrogen absorption capacity (2.9 wt.%) within 5 min at 393 K under H2 pressure of 4 MPa, and can desorb rapidly at 493 K. The decomposition and synthesis of hydrogen molecule on Mg2Ni0.8Cr0.2 alloy surface was promoted by addition of CoO/Al2O3 catalyst. In addition, the formation of metallic Ni particles, strain and defects during the ball milling process also resulted in the improved hydrogenation performance of Mg2Ni-based alloys.


Sujets)
Absorption , Oxyde d'aluminium , Chimie , Température élevée , Hydrogène , Chimie , Cinétique , Composés du magnésium , Chimie , Produits manufacturés , Test de matériaux , Conformation moléculaire , Composés de l'azote , Chimie , Pression , Température
16.
National Journal of Andrology ; (12): 490-498, 2005.
Article Dans Chinois | WPRIM | ID: wpr-323327

Résumé

<p><b>OBJECTIVE</b>To study the influence of estradiol benzoate (E2B) on the testis development of Sprague-Dawley (SD) rats.</p><p><b>METHODS</b>Newborn male SD rats were injected subcutaneously with E2B (0.2 mg/5 g body weight). At days 14, 21, 28, 42 and 56 after birth, the rats were sacrificed after anaesthesia, and their testes were taken out and weighed. The cranial and caudal SEH and TD were measured respectively, the TD/SEH ratio in each part of the testis and the caudal SEH/cranial SEH ratio were calculated, and different stages of spermatogenesis were analysed.</p><p><b>RESULTS</b>In the experimental group, the testis weight was significantly lower than that of the control (P < 0.01), the testes constantly remained in the abdominal cavity, and there was much fluid retention in the rete testis all the time. From day 21 on, the TD/SEH ratio in the cranial testis was much higher than in the control (P < 0.01), and so was the caudal SEH/cranial SEH ratio (P < 0.01). And spermatogenesis was obviously retarded as compared with the control (P < 0.01).</p><p><b>CONCLUSION</b>Exposure of newborn male SD rats to E2B can cause fluid retention in the testis and cryptorchid, which in turn may retard spermatogenesis.</p>


Sujets)
Animaux , Mâle , Rats , Animaux nouveau-nés , Oestradiol , Pharmacologie , Toxicité , Répartition aléatoire , Rat Sprague-Dawley , Spermatogenèse , Testicule
17.
National Journal of Andrology ; (12): 806-809, 2005.
Article Dans Chinois | WPRIM | ID: wpr-339421

Résumé

<p><b>OBJECTIVE</b>To study the influence of estradiol benzoate (E2B) on the fluid reabsorption capacity of rat efferent ductuli.</p><p><b>METHODS</b>Newborn male Sprague-Dawley rats were injected subcutaneously with E2B (0.2 mg/5 g body weight), and the histological morphology of efferent ductulus, epithelial ultrastructure, and immunoexpression of AQP-1 were investigated on postnatal day 14, 21, 28, 42 and 56, respectively. Vehicle was given to the controls.</p><p><b>RESULTS</b>After exposure to E2B, the lumina of the efferent ductuli dilated greatly (P < 0.05), and the epithelium height decreased significantly (P < 0.01), microvilli of nonciliated cells short and sparse, endocytic apparatus implicated in fluid reabsorption scarce, and with no AQP-1 expression.</p><p><b>CONCLUSION</b>High dosage of E2 B neonatally administrated to rats damages the fluid reabsorption capacity of efferent ductuli.</p>


Sujets)
Animaux , Mâle , Rats , Absorption , Physiologie , Animaux nouveau-nés , Aquaporine-1 , Liquides biologiques , Métabolisme , Cellules épithéliales , Métabolisme , Oestradiol , Toxicité , Rat Sprague-Dawley , Testicule , Métabolisme
18.
Chinese Journal of Biotechnology ; (12): 302-305, 2004.
Article Dans Chinois | WPRIM | ID: wpr-259104

Résumé

Basidiomycete PM2, a lignin-degrading white rot fungus, produces lgnin peroxidase (Lip) and manganese peroxidase (Mnp) in nutrient nitrogen limited liquid cultures. This fungus was selected for its ability to decolorize azo group of dyes. In order to improve production of the peroxidases and rapid dye decolorizing activity by basidiomycete PM2, the addition of veratryl alcohol or Tween 80 to nutrient nitrogen limited liquid cultures were tested. It was found to have a large stimulatory effect on Mnp activities and decolorization rate of azo dyes. A maximum Mnp activities of 254.2 u/L with veratryl alcohol and 192.2 u/L with Tween 80 were achieved respectively. These values were about 3.4-fold and 2.5-fold higher than that obtained in the control cultures (without alcohol or Tween 80), whereas the levels of Lip activity detected were very low (about 12 u/L)in all the cultures. In further experiments using three kinds of azo dyes of congo red, orange G and orange IV, enzyme activities and dye decolorization were investigated in the above-mentioned cultures. The results showed that Mnp activities and decolorization were notably higher than those obtained in the control cultures in the presence of azo dyes. Cultures supplemented with Tween 80 were more adequate for dye decolorization. The rates of the decolorization with Tween 80 of congo red (95.4%), orange G (98.5%) and orange IV (54.4%) after 24 hours of dye incubation were higher than that supplemented with veratryl alcohol. According to the results, Mnp activities secreted by basidiomycete PM2 play an essential role in the process of dye decolorization. Tween 80 was the main factor affecting the decolorization. The analysis of structure of the three kinds of azo dyes indicats that the extent of decolorization is affected by the dye molecular structure. The types and quantity of the substituted groups on the aromatic ring of azo dyes have effect on the percentage of biological decolorization.


Sujets)
Composés azoïques , Métabolisme , Basidiomycota , Métabolisme , Alcools benzyliques , Pharmacologie , Agents colorants , Métabolisme , Oxygénases , Peroxidases , Polysorbates , Pharmacologie
19.
Acta Pharmaceutica Sinica ; (12): 944-948, 2004.
Article Dans Chinois | WPRIM | ID: wpr-241405

Résumé

<p><b>AIM</b>To study the permeability of nerve growth factor (NGF) liposomes (NGF-L, NGF-SSL, NGF-SSL-T) on the blood-brain barrier (BBB) model and the distribution in vivo, and analyze the correlation between the results in vitro and in vivo.</p><p><b>METHODS</b>The BBB model in vitro was established by using mouse brain microvascullar endothelial cell, and the model was applied to study the permeability of NGF liposomes. The distribution of NGF of each group was studied by 125I labeled and SDS-PAGE method.</p><p><b>RESULTS</b>The highest encapsulation proportion was 34%, and the mean size of NGF liposomes was below 100 nm. The permeability of NGF liposomes on in vitro BBB model showed that the liposome could promote NGF to transport across the BBB, the permeability of NGF-SSL-T was the highest. The distribution in the brain showed in an order of NGF concentration NGF-SSL-T > NGF-SSL + RMP-7 > NGF-SSL > NGF-L. There was a close relationship between P(e) (permeability coefficient on in vitro BBB model) and BUI (brain uptake constant in vivo).</p><p><b>CONCLUSION</b>Liposomes can promote NGF to transport across the BBB, and the transporting ability BBB of NGF-SSL-T which RMP-7 incorporated into the surface of NGF liposomes is the best.</p>


Sujets)
Animaux , Mâle , Souris , Rats , Transport biologique , Barrière hémato-encéphalique , Bradykinine , Pharmacologie , Encéphale , Métabolisme , Perméabilité des membranes cellulaires , Systèmes de délivrance de médicaments , Cellules endothéliales , Biologie cellulaire , Liposomes , Facteur de croissance nerveuse , Pharmacocinétique , Taille de particule , Distribution tissulaire
20.
Acta Pharmaceutica Sinica ; (12): 292-295, 2004.
Article Dans Chinois | WPRIM | ID: wpr-301092

Résumé

<p><b>AIM</b>To study the therapeutic efficiency of amphotericin B liposome (AmB-L) targeting to the brain in mice with meningitis.</p><p><b>METHODS</b>Amphotericin B liposome targeting to the brain were prepared by film-sonication method. Their concentration and encapsulation percentage were determined. The Candida albicans was injected into the brain of BALB/c mice and the meningitis model was set up. Then the therapeutic efficiency of amphotericin B liposome targeting to the brain was studied.</p><p><b>RESULTS</b>The encapsulation percentage of amphotericin B liposome was 93.3%. The meningitis model was set up after the Candida albicans was injected into the brain of BALB/c mice for 2 h. The therapeutic efficiency was increased after conjugating RMP-7 (the commercial nama is Cereport) to the surface of amphotericin B liposome.</p><p><b>CONCLUSION</b>The therapeutic efficiency of Amphotericin B liposome targeting to the brain in the mice with meningitis was better than that of the common amphotericin B liposome and the life of the mice in AmB-L-PEG-RMP-7 group was longer than that of the mice in AmB-L-PEG group and AmB-L-PEG + RMP-7 group.</p>


Sujets)
Animaux , Femelle , Mâle , Souris , Rats , Amphotéricine B , Pharmacocinétique , Utilisations thérapeutiques , Antifongiques , Pharmacocinétique , Utilisations thérapeutiques , Transport biologique , Barrière hémato-encéphalique , Bradykinine , Pharmacologie , Encéphale , Métabolisme , Candida albicans , Systèmes de délivrance de médicaments , Liposomes , Méningite fongique , Traitement médicamenteux , Microbiologie , Souris de lignée BALB C , Rat Sprague-Dawley
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