Objective To explore the effect of dimethylformamide(DMF)on the histological structure and enzymes activity in the testis of mice.Methods The KM male mice were treated with DMF by gavage at the doses of 0,0.5,1 and 2 g/kg respectively, once a day,for 30 consecutive days.On day 31,the mice blood samples were collected through eyes and then the mice were killed. Two mice were randomly selected in each group and one testicle was sampled to do the pathological examination,the other one for enzyme activity determination,including succinic acid dehydrogenase(SDH),lactate dehydrogenase(LDH)and acid phosphatase (ACP).Results Compared with the control group,all treated groups showed a significant decrease in body weight(P

To report the clinical, radiological and neuropathological findings of a patient with rheuma-toid meningitis. The patient was a 71-year-old Chinese man with a two-year history of rheumatoid arthritisand no other significant medical history, who presented to our hospital recurrent weakness of his left ex-tremities, dysarthria and a continuous bilateral hand tremor. Cerebrospinal fluid (CSF) and serumexam-inations were normal apart from a mildly raised serum perinuclear antineutrophil cytoplasmic autoantibody(p-ANCA). Brain magnetic resonance imaging (MRI) showed leptomeningeal enhancementin both fron-tal and parietal lobes, in addition to several old white matter infarcts. Meningeal biopsy showed numerousinfiltrating macrophages and lymphocytes within the leptomeninges. The patient responded clinically andradiologically to corticosteroid and cyclophosphamide therapy. The patient subsequently developed herpeszoster over his left chest as a complication of his immunosuppressive treatment. His cyclophosphamidewas ceased and intravenous immunoglobulin (IVIG) therapy was commenced, with good clinical responseto both the herpes zoster and meningitis. According to the result of the biopsy, aseptic meningitis wasconsidered the MRI results and the patient’s clinical history were given, and a diagnosis of rheumatoidmeningitis was made. The patientwas p-ANCApositive. Although there was no evidence for cerebral vas-culitis on biopsy, it remains a possibility that the patient’s recurrent minor cerebral infarcts visible onMRI were vasculitic in nature.

Clinical data of 4 cases of infants with hemophilia complicated with hematorrhachis diagnosed in Guangzhou Women and Children′s Medical Center from January 2017 to December 2018 was retrospectively analyzed.The clinical manifestations of 4 children was atypical, only showing irritability and crying, poor spirit and weak head in the early stage, and torticollis and limb weakness in the late stage may easily contribute to a misdiagnosis.The spinal magnetic resonance imaging is an important diagnosis of hematorrhachis.The most common site of disease was cervicothoracic and thoracolumbar spinal epidural hemorrhage.Of the 4 patients in this article, 1 patient was treated with surgery combined with infusion factor Ⅷ replacement therapy.Three patients were treated with infusion factor Ⅷ replacement therapy alone to obtain clinical rehabilitation.The prognosis of early diagnosis was good, the time from onset to diagnosis in 3 cases was within 1 week, after treatment all had rehabilitation; 1 case within 2 weeks of diagnosis, partial rehabilitation.It is suggested that hemophilia complicated with hematorrhachis in infants is hidden, and it can only be irritable and crying in the early stage, and neurological symptoms appear in the late stage.Improving diagnostic awareness, early diagnosis and early infusion factor replacement therapy are critical for prognosis.

Background Rigid gas permeable (RGP) contact lens,as a kind of new correction of refraction error,has been wildly used,but whether it will cause eye optical system of the change and influence on the visual acuity is unclear.Objective Present study was to evaluate and compare the visual quality of low to moderate myopia following wearing of RGP contact lens and spectacles.Methods Sixty-eight eyes of 35 subjects with low or mediate myopia were included in this study.Wave-front aberrations and visual acuities under the different contrasts (10％,30％,40％,52％,76％,92％) in the light or dark environment were examined before and 3 months after wearing of RGP corneal contact lens.These parameters were compared with those after wearing of spectacles with paired t test.Results The best corrected visual acuity (BCVA) was improved significantly from 0.94±0.10 to 1.26±0.03 3 months after wearing of RGP corneal contact lens (t=-9.266,P=0.000).After fitting of RGP corneal contact lens,the total higher order wave-front aberrations,the 3rd and 4th order aberrations were significantly declined in comparison with those of before fitting (total:t=4.683,P=0.000;RMS3:t=4.656,P=0.000;RMS4:t=3.929,P=0.000).However,no significant differences were detected in the 5th and 6th order aberrations between RGP corneal contact lens fitting and spectacles wearing (RMS5:t=1.766,P=0.083 ;RMS6:t=1.150,P=0.256).In both bright and dark environments,BCVA values were much better in the eyes with RGP corneal contact lens wearing than that in the eyes with spectacles wearing (all P＜0.05).The BCVA was always reduced with the decline of contrast level whether bright or dark backgrounds both in RGP corneal contact lens wearing eyes and spectacles wearing eyes.Conclusions Wearing of RGP corneal contact lens provides better visual quality for low to moderate myopia than the spectacles wearing.

To build the Dendrobium nobile -T2DM network, and elucidate the molecular mechanism of D. nobile to type 2 diabetes (T2DM). Collect the chemical composition of D. nobile and the targets on T2DM by retrieving database and documents, build the network of D. nobile to T2DM using the entity grammar systems inference rules. The molecular mechanism of D. nobile to T2DM includes: (1) regulating lipid metabolism by lowering triglyceride; (2) reducing insulin resistance; (3) protecting islet cells; (4) promoting the glucose-dependent insulin tropic peptide (GIP) secretion; (5) inhibiting calcium channel. Under the guidance of network pharmacology, through entity grammar systems inference rules we elucidate the molecular mechanism of D. nobile to T2DM, and provide the basis for the further development of health care products based on D. nobile.
Animals ; Calcium Channels ; genetics ; metabolism ; Databases, Factual ; Dendrobium ; chemistry ; Diabetes Mellitus, Type 2 ; drug therapy ; genetics ; metabolism ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; Gene Regulatory Networks ; drug effects ; Humans ; Hypoglycemic Agents ; administration & dosage ; chemistry ; Insulin Resistance ; Islets of Langerhans ; metabolism ; Triglycerides ; metabolism

Adolescent ; Adult ; Astrocytoma ; diagnosis ; surgery ; Brain Neoplasms ; diagnosis ; surgery ; Child ; Female ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging ; Male ; Microsurgery ; methods ; Middle Aged ; Thalamic Diseases ; diagnosis ; surgery ; Thalamus ; surgery ; Treatment Outcome

Objective To investigate the effect of valsartan (angiotensinⅡtypeⅠreceptor antagonists) on neointimal proliferation and expression of CD34 after angioplasty in rabbits.Method Twenty-four male New Zealand White rabbits were randomly divided into three groups:the control group,fed up with common diet;the model group and the valsartan group,fed up with hypercholesterolemic diet for 4 weeks,f then and ballon angioplasty.At 4 weeks after operation,the model group was fed up with common diet,whereas the valsartan group was fed up with the admixture of valsartan 10 mg?kg~(-1)?d~(-1) and common diet.All the rabbits were killed at the end of the 12th weeks.The abdominal aorta was performed with pathologic and morphologic analysis,and expression of CD34 in endothelial cells was analyzed with immunohistochemical method.Results Compared with the model group,the neointimal thickness and area of the valsartan group decreased by 56.58%and 66.81%, respectively.The expression of CD34 of the valsartan group was significantly higher (P

Objective To report clinical,myopathological and genetic features in a family with oculopharyngeal muscular dystrophy(OPMD).Methods The proband,a 60 year-old man,presented proximal weakness of both lower limbs since 50 years old.He developed dysphagia and dysarthria after 53 years old and mild exophthalmos with ptosis after 57 years old.The serum creatine kinase was mildly elevated.Electromyography showed neurogenic involvement and the nerve conduction velocity decreased 20%-143%.Other 5 members in 3 generations developed also dysathria after 45 years old.followed by ptosis 4-20 years afterwards.Three of them showed mild limb weakness.Muscle was biopsied in the proband and specimen was examined with histological,enzymhistochemical,immunohistochemical stainings (first antibody were anti.desmin and ubiquitin antibedies) and ultrastructural examination.PABPN1 gene was sequenced in the proband and 18 family members.Results Rimmed vacuoles with ubiquitin positive material appeared in the muscle fibers.Additionally.there were a few angular atrophic fibers in small groups,COX negative fibers and desmin positive regenerative fibers.Intranuclear palisading filamentous inclusions were observed electromicroscopically in 3% of the nuclears.(GCG)6in PABPN1 was expanded to (GCG)9 in the proband and 11 members.Conclusions The onset symptoms is pharyngeal weakness in OPMD due to heterozygous expanding of PABPNl(GCG)9,accompanied with demyelinating neuropathy.Intranuclear inclusions are also identified in Chinese patient.

Objective To describe the changes of cell development associated contracture and structure proteins in vascular smooth muscle cells (VSMCs) in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Methods The clinical manifestation of probands in 6 families showed the recurrent cerebral ischemic event. A part of patients showed dementia. The genetic analysis in all probands showed Notch3 gene mutation. All probands received the sural nerve biopsy. The primary antibodies against α-smooth muscle actin, smooth muscle myosin heavy chain, desmin and vimenfin were used in immunohistochemistry staining on all of them. Results VSMCs showed hypertrophy or atrophy in the arterioles with different caliber. The granular osmiophilic material (GOM) could be found within the basal lamina of arteriole VSMCs in all of the probands. The expressions of α-smooth muscle actin and smooth muscle myosin heavy chain were partly lost, negative or unevenly distributed in the VSMCs in the arteriole. The expression of desmin showed also unregular distribution or partial loss. The expression of vimentin was partly enhanced. Conclusions The VSMCs show the physiological features of synthetic configuration, indicating the hypoplasia of VSMCs in the arterioles of CADASIL. The VSMCs of the larger arteriole were more severely involved.

Objective To prepare human prostatic carcinoma-targeted ultrasound contrast agent and assess its targeted ability in vitro. Methods Human prostatic carcinoma-specific polyclonal antibody PSM(C-15) was attached to the surface of self-made liposome microbubbles by electrostatic attraction to prepare targeted microbubbles. Immunofluorescent staining assay was used to identify the combination of PSM(C-15) with liposome microbubbles and the targeted microbubbles were added to prostatic-carcinoma cells and then observed under the light and fluorescence microscope to evaluate the targeting ability of the targeted liposome microbubbles with prostatic carcinoma cells in vitro, while the common liposome microbubbles were controls. Results Targeted microbubbles were positive in immunofluorescent straining assay. In vitro study of the targeting ability showed the targeted microbubbles could actively adhere to LNCaP cell. While the control was negative. Conclusion The targeted liposome contrast agent with highly specific biological activity was prepared successfully. The contrast agent could bind to human prostatic carcinoma cells specially and effectively in vitro.