Effect of exogenous CdS nanoparticle on the growth of Escherichia coli / 生物工程学报

Semiconductor nanoparticles generate photoelectrons and photo-induced holes under light excitation, and thus may influence the growth of microbial cells. The highly oxidative holes may severely damage the cells, while the photoelectrons may promote microbial metabolism. In this study, we evaluated the effect of exogenous cadmium sulfide (CdS) nanoparticles on bacterial growth using OD600 and colony forming unit (CFU) as indicators. The oxidase activities, the concentration of pyruvate and malondialdehyde, and the expression of relevant genes assessed by real-time fluorescent quantitative PCR were analyzed to investigate the effect of excited CdS on cellular metabolism. The results showed that the OD600 and pyruvate accumulation of E. coli increased by 32.4% and 34.6%, respectively, under light conditions. Moreover, the relative expression level of the division protein gene ftsZ was increased more than 50%, and the tricarboxylic acid cycle pathway gene icdA and gltA increased by 86% and 103%, respectively. The results indicated that photoelectrons could be used by microorganisms, resulting in promoted growth and metabolism. This study gives a deep insight into the interaction between nanoparticles and bacteria.

Recovery of IFN-7-secreting T and NK cells after low dose X-ray radiation injury and the protective effect of Prepared Radix Rehmanniae / 中国药理学通报

Aim To investigate the reeovery of I FN-7- tion and the protective effect of Prepared Radix Reh- secreting T and NK cells after low dose X-ray irradia- manniae ( PRR ).Methods X-ray 2.5Gy was used to establish a mouse irradiated model,and some irradiated mice were used to establish a melanoma lung cancer metastasis model or to be treated by PRR.The propor¬tion and number of Tel , Thl and NK1 cells with the phenotypes of IL-12R and IL-15R were detected by flow cytometry.The transcription levels of IL-12,1L- 15 ,STAT4 and T-bet were detected by RT-qPCR.Re¬sults Within four days after irradiation,Thl ,Tcl and NK1 cells were significantly reduced ( P < 0.05 , P < 0.01).The expression of IL-12R and IL-15R de¬creased in Thl and Tel cells , and increased in NK1 cells ( P < 0.05 ).On day 8 of irradiation , NK1 and Tc 1 cells recovered or exceeded basic level, but Th 1 was still lower than normal level ( P < 0.05 ) , and tumor load of irradiated mice increased significantly (P <0.01).Compared with radiation group, the propor¬tion and absolute numbers of NK1 ,Tel and Thl were up-regulated by PRR (P <0.05 <0.01) ,and tumor load was down-regulated ( P < 0.05 ).Conclusions The impaired reconstitution of Thl cells after irradia¬tion affects the anti-tumor ability.PRR promotes the recover}' of IFN-∗y-secreting T and NK cells after radia¬tion and reduces the risk of tumor metastasis in mice.

A Case of Crowned Dens Syndrome Successfully Treated with Daiobotampito and Shimotsuto / 日本東洋医学雑誌

Crowned dens syndrome (CDS) is a pseudogout of the cervical vertebra, which shows calcification around the dens of the axis. We report a case of CDS that was successfully treated with daiobotampito and shimotsuto. An 83-year-old woman visited our clinic because of neck pain. She was diagnosed with CDS and was initially administered daiobotampito and eppikajutsuto. Her neck pain improved slightly, but recurred. She was then administered daiobotampito and shimotsuto, after which her neck pain disappeared. We considered that daiobotampito and shimotsuto were effective for this prolonged illness based on persistent stasis and blood deficiency according to her treatment course and laboratory findings.

Synthesis of a new type of carbon dots by pyrolysis of human hair using motor oil as a dispersant and their biological effects / 中草药

Objective: New type of nano-carbon dots were found after pyrolysis of human hair using motor oil as a dispersant and the biological effect of these carbon dots was evaluated by animal experiments. Methods: High-temperature pyrolysis was used to carbonize human hair and motor oil, and the carbonized products were extracted, filtered, and dialyzed to obtain a new type of water-soluble substance, carbon dots, named JYRF-CDs. JYRF-CDs were characterized using transmission electron microscopy (TEM) and high-resolution TEM, as well as ultraviolet-visible, fourier transform infrared, fluorescence spectroscopy and X-ray photoelectron spectroscopy (XPS). CCK-8 toxicity test using RAW264.7 cells was used to evaluate the safety of JYRF-CDs and the biological effects of the JYRF-CDs were evaluated by mouse ear swelling experiments and mouse acetate writhing experiments. Results: These JYRF-CDs were nearly spherical and well separated from each other, with a size distribution range of 1.8-3.6 nm, the CDs had a lattice spacing of 0.219 7 nm. The results of cytotoxicity experiments showed that JYRF-CDs had low toxicity, and the results of animal experiments showed that JYRF-CDs had good anti-inflammatory and analgesic effects. Conclusion: In this study, new type of carbon dots, JYRF-CDs, were discovered after pyrolyzing human hair with motor oil as a dispersant for the first time. Taking JYRF-CDs as a breakthrough, the material base of carbonization products after pyrolysis of human hair by high-temperature pyrolysis using motor oil as a dispersant was more clearly explained, providing a new method for the research of nano compounds.

Deep anterior lamellar keratoplasty versus penetrating keratoplasty in the treatment of stromal corneal dystrophies / 国际眼科杂志(Guoji Yanke Zazhi)

?AIM:To compare the efficacy and safety of penetrating keratoplasty ( PK) and deep anterior lamellar keratoplasty ( DALK) in the treatment of stromal corneal dystrophy.?METHODS:A systematic review and Meta-analysis was conducted for studies comparing visual acuity [ best-corrected visual acuity ( BCVA ) ( LogMAR ) ] and corneal endothelial cell count ( ECC) as well as safety outcomes of DALK and PK surgeries, including graft-related outcomes and intraoperative and postoperative complications. Embase, PubMed, and Google Scholar were searched for eligible studies until June 2019. Continuous and dichotomous variables were expressed as weighted mean difference ( WMD ) and risk ratios ( RRs ) , respectively, along with their respective 95％confidence intervals ( CIs) .? RESULTS: Five comparative studies recruiting 350 patients with macular and/or lattice corneal dystrophy (59.71％ males) were eventually included. No significant differences were noted in the mean BCVA after both types of surgeries. However, following DALK procedures, corneal ECC was significantly higher two years postoperatively ( WMD=401.62 cell/mm2 , 95％CI:285.39-517.85, P< 0.001 ) , and graft and endothelial rejection rates were significantly lower ( RR=0.30, 95％ CI: 0.14-0.64, P=0.002;RR=0.09, 95％ CI: 0.02-0.46, P=0.004, respectively) when compared to patients undergoing PK procedures. However, DALK procedures were associated with increased risks of intraoperative Descemet' s membrane perforations and postoperative double anterior chamber ( All P<0.001) .?CONCLUSION: DALK procedures are relatively more efficacious over the follow up periods with better safety outcomes than PK in patients with stromal CDs, conerning rejection and better visual outcome.

Deep anterior lamellar keratoplasty versus penetrating keratoplasty in the treatment of stromal corneal dystrophies / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM: To compare the efficacy and safety of penetrating keratoplasty(PK)and deep anterior lamellar keratoplasty(DALK)in the treatment of stromal corneal dystrophy.<p>METHODS: A systematic review and Meta-analysis was conducted for studies comparing visual acuity \〖best-corrected visual acuity(BCVA)(LogMAR)\〗 and corneal endothelial cell count(ECC)as well as safety outcomes of DALK and PK surgeries, including graft-related outcomes and intraoperative and postoperative complications. Embase, PubMed, and Google Scholar were searched for eligible studies until June 2019. Continuous and dichotomous variables were expressed as weighted mean difference(WMD)and risk ratios(RRs), respectively, along with their respective 95% confidence intervals(CIs).<p>RESULTS: Five comparative studies recruiting 350 patients with macular and/or lattice corneal dystrophy(59.71% males)were eventually included. No significant differences were noted in the mean BCVA after both types of surgeries. However, following DALK procedures, corneal ECC was significantly higher two years postoperatively(WMD=401.62 cell/mm2, 95% <i>CI</i>: 285.39-517.85, <i>P</i><0.001), and graft and endothelial rejection rates were significantly lower(<i>RR</i>=0.30, 95% <i>CI</i>: 0.14-0.64, <i>P</i>=0.002; <i>RR</i>=0.09, 95% <i>CI</i>: 0.02-0.46, <i>P</i>=0.004, respectively)when compared to patients undergoing PK procedures. However, DALK procedures were associated with increased risks of intraoperative Descemet's membrane perforations and postoperative double anterior chamber(All <i>P</i><0.001).<p>CONCLUSION: DALK procedures are relatively more efficacious over the follow up periods with better safety outcomes than PK in patients with stromal CDs, conerning rejection and better visual outcome.

Amplification Effect of CdS Quantum Dots on Electrogenerated Chemiluminescence of Ru(bpy)32+and Its Application in Determination of Catechol / 分析化学

The effect of CdS quantum dots (QDs) on the electrochemiluminescence (ECL) signal of Ru(bpy)32+ was studied. It was found that CdS QDs could enhance the anodic ECL of Ru(bpy)32+ by 4 times. The sensitization mechanism was discussed and the influence factors including concentrations of Ru (bpy)32+ and CdS QDs, pH of solution and scan rate on ECL intensity were investigated. On the basis of quenching effect of catechol on the ECL signal of CdS QDs-Ru(bpy)32+,a system for sensitive determination of catechol was established with a detection limit of 5.5 nmol/L (S/N=3). This method was applied to the detection of catechol in tea sample with satisfactory results.

Ultrasensitive Determination of L-Cysteine Based on Its Enhancement to Electrochemiluminescence of CdS Quantum Dots with Cd2+Rich Surface / 分析化学

A novel electrochemiluminescence ( ECL) method for the determination of L-cysteine ( L-Cys) was established. water-soluble CdS quantum dots ( QDs) with Cd2+rich surface were synthesized via a controllable one-poe approach. The mercapto group in L-cysteine molecule can specifically interact with excessive Cd2+on the surface of CdS QDs, resulting in enhancement of ECL intensity of the CdS QDs, which can be used for the detection of L-Cys. Under the optimal experimental conditions, the enhancement of ECL intensity was linear with the concentration of L-Cys in the range of 5. 0×10-9-1. 0×10-5 mol/L. The limit detection of (S/N=3) was 1. 2×10-9 mol/L. In comparison with other methods for detecting L-Cys, this method is more simple and selective, and can be applied to detect L-Cys in real sample with satisfactory results.

CdS nanocrystals as fluorescent probe for detection of dolasetron mesylate in aqueous solution:Application to biomedical analysis / 药物分析学报

A simple and straightforward method for the determination of dolasetron mesylate (DM) in aqueous solution was developed based on the fluorescence quenching of 3-Mercaptopropionic acid (MPA) capped CdS quantum dots (QDs). The structure, morphology, and optical properties of synthesized QDs were characterized by using UV-Vis absorption spectroscopy, fluorescence spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS) measurements. Under the optimum conditions, the MPA-CdS QDs fluorescence probe offered good sensitivity and selectivity for detecting DM. The probe provided a highly specific selectivity and a linear detection of DM in the range of 2–40 μg/mL with detection limit (LOD) 1.512 μg/mL. The common excipients did not interfere in the proposed method. The fluorescence quenching mechanism of CdS QDs is also discussed. The developed sensor was applied to the quantification of DM in urine and human serum sample with satisfactory results.

Alertas inteligentes: desenvolvimento de software para otimização dos dados de monitoração / Smart alerts: development of a software to optimize data monitoring / Alertas inteligentes: desarrollo de un software para la optimización de los datos de monitorización

JUSTIFICATIVA E OBJETIVOS: A monitoração é útil no acompanhamento dos parâmetros vitais e na prevenção, diagnóstico e tratamento de eventos adversos em anestesia. Os alarmes, embora úteis na monitoração, podem causar perigosa dessensibilização do usuário. Objetivou-se descrever o desenvolvimento de software específico para a integração de parâmetros de monitoração intraoperatória, gerando "alertas inteligentes" que podem auxiliar na tomada de decisões, além de indicar possíveis diagnósticos e tratamentos. MÉTODO: Projetou-se um sistema que permitisse flexibilidade na definição dos alertas, combinando os alarmes individuais dos parâmetros monitorados para gerar um alerta mais elaborado. Após o levantamento de um conjunto de alertas inteligentes considerados relevantes no ambiente cirúrgico, um protótipo foi obtido e avaliado, e as sugestões adicionais foram implementadas no produto final. Para verificação da ocorrência dos alertas inteligentes, o sistema foi submetido a testes com dados previamente obtidos durante monitoração intraoperatória de 64 pacientes. O sistema desenvolvido permite a análise contínua do conjunto de parâmetros monitorados, verificando a ocorrência dos alertas inteligentes definidos na interface do usuário. RESULTADOS: Com o uso do sistema, verificou-se uma potencial redução de 92 por cento dos alarmes. Notou-se que, na maioria das situações em que não foram gerados alertas, os alarmes individuais não representavam situações de risco ao paciente. CONCLUSÕES: A implementação de ferramentas de software possibilita a integração de dados de monitoração e geram informações como eventuais diagnósticos ou intervenções. Verificou-se uma redução potencial expressiva na quantidade de alarmes durante a anestesia. As informações exibidas pelo sistema, algumas vezes, podem ser mais úteis que a análise de parâmetros isolados.

BACKGROUND AND OBJECTIVES: Monitoring is useful for vital follow-ups and prevention, diagnosis, and treatment of several events in anesthesia. Although alarms can be useful in monitoring they can cause dangerous user's desensitization. The objective of this study was to describe the development of specific software to integrate intraoperative monitoring parameters generating "smart alerts" that can help decision making, besides indicating possible diagnosis and treatment. METHODS: A system that allowed flexibility in the definition of alerts, combining individual alarms of the parameters monitored to generate a more elaborated alert system was designed. After investigating a set of smart alerts, considered relevant in the surgical environment, a prototype was designed and evaluated, and additional suggestions were implemented in the final product. To verify the occurrence of smart alerts, the system underwent testing with data previously obtained during intraoperative monitoring of 64 patients. The system allows continuous analysis of monitored parameters, verifying the occurrence of smart alerts defined in the user interface. RESULTS: With this system a potential 92 percent reduction in alarms was observed. We observed that in most situations that did not generate alerts individual alarms did not represent risk to the patient. CONCLUSIONS: Implementation of software can allow integration of the data monitored and generate information, such as possible diagnosis or interventions. An expressive potential reduction in the amount of alarms during surgery was observed. Information displayed by the system can be oftentimes more useful than analysis of isolated parameters.

JUSTIFICATIVA Y OBJETIVOS: La monitorización es útil en el seguimiento de los parámetros vitales y en la prevención, diagnóstico y tratamiento de eventos adversos en anestesia. Las alarmas, aunque sean útiles en la monitorización, pueden causar una peligrosa desensibilización del usuario. Aquí hemos querido describir el desarrollo de un software específico para la integración de los parámetros de monitorización intraoperatoria, generando "alertas inteligentes" que puedan ayudar en la toma de decisiones, además de indicar posibles diagnósticos y tratamientos. MÉTODO: Se proyectó un sistema que permitiese la flexibilidad en la definición de las alertas, combinando las alarmas individuales de los parámetros monitorizados para generar una alerta más elaborada. Posteriormente a la investigación de un conjunto de alertas inteligentes consideradas relevantes en el ambiente quirúrgico, se obtuvo y se evaluó un prototipo, y las sugerencias adicionales fueron implementadas en el producto final. Para la verificación de la incidencia de las alertas inteligentes, el sistema fue sometido a pruebas con datos previamente obtenidos durante la monitorización intraoperatoria de 64 pacientes. El sistema desarrollado permite un análisis continuo del conjunto de parámetros monitorizados verificando el surgimiento de las alertas inteligentes definidas en la interfaz del usuario. RESULTADOS: Con el uso del sistema, verificamos un potencial de reducción de las alarmas en el umbral del 92 por ciento. Notamos también, que en la mayoría de las situaciones en que no fueron generadas alertas, las alarmas individuales no representaban situaciones de riesgo para el paciente. CONCLUSIONES: La implementación de herramientas de software pueden posibilitar la integración de los datos de monitorización y generar informaciones como posibles diagnósticos o intervenciones. Se verificó una reducción potencial expresiva en la cantidad de alarmas durante la anestesia. Las informaciones que el sistema mostró pueden ser algunas veces más útiles que el análisis de parámetros aislados.

Effects of RATG on CD4+and CD8+ T cell eostimulatory molecule gene expression and productiun of immune-regulatory cytokines / 中华器官移植杂志

Objective To investigate the immunological effects of thymoglobulin (RATG) on human CD4+and CD8+cells for costimulatory molecule gene expression and the production ofimmune-regulatory cytokines. Methods CD4+and CI8+T cells were isolated and purified fromnormal human peripheral blood mononuclear cells (PBMC) followed by incubation with RATG at37℃. Cells and culture supematants were collected at 24, 48, and 72 h after incubation, and analyzedby real-time quantitative polymerase chain reaction (RT-PCR) for CTLA-4, CD154, forkhead box P3(Foxp3), OX40, IFN-γ, IL-2, IL-10 and CD25 gene expression, and multiplex cytokine detectionassay for IFN-y, IL-2, IL-10, and IL-4 production. Untreated and rabbit isotype Ig-treated cells wereused as negative controls. Results RT-PCR demonstrated that RATG pre-treated CI+and CD8+cells upregulated the expression of CTLA-4, OX40, Foxp3, CD25, IFN-γ, IL-10 and IL-2 genes, anda dramatic increase of supernatant IFN-γ, IL-10, IL-2 and IL-4 was revealed 24 h after treatment asdetermined by multiplex cytokine detection assay when compared with negative controls. Theupre gulation of CTLA-4, Foxp3, OX40, IL-10 and CD25 was reduced, and a down-regulation ofCD154 and IL-2 gene expression was revealed 48 h after treatment. Cells, treated with RATG for 72h, demonstrated up-regulation of CTLA-4, Foxp3, OX40, IFN-y and CD25 gene expression, and theexpression of IL-2 and IL-10 genes was down-regulated. Additionally, supernatant IFN-γ, IL-2,IL-10 and IL-4 levels were decreased. Conclusion RATG stimulates CI4/CD8 T cells to up-regulatecostimulatory molecules and release immune regulation associated cytokines IF'N-γ, IL-2, IL-10in vitro. These results suggest that the unique effect of RATG on CD4+CD8+T cells may be animportant mechanism for its action in inducing immunoregulation, immunosuppression and transplanttolerance.

Electroanalytical method for TPPS4 ,the interaction of TPPS4 with BSA and the influence of CDs on it by fluorescence spectroscopy / 药学学报

Aim To establish a simple, rapid and accurate electroanalytical method for water soluble porphyrin meso-tetrakis-(4-sulfonatophenyl) porphyrin (TPPS4);to clarify the reaction between water soluble porphyrins and bovine serum albumin (BSA);and to determine the interaction of TPPS4 with BSA in the absence of presence of cyclodextrins (CDs) , separately. Methods Three methods including LSV,UV spectroscopy and fluorescence spectroscopy bad been employed to the relevant experiments. The way of employing three methods at the same time could make the experiment results more reliable. Results In the supporting electrolyte of NaH2 PO4-Na2 HPO4 ( pH 7. 18 ), a sensitive reduction peak of TPPS4 was found by linear sweep voltammetry (LSV), the peak potential (Ep) was-0. 70 V (vs SCE). The relationship between the second derivative peak of LSV (ip") and the concentration of TPPS4 was linear from 1.0 × 10-7mol·L-1 to 1.0 × 10-5mol· L-1,the square of correlation coefficients (r2) were 0. 998 3 and 0. 999 3, respectively. The relative standard deviation (RSD) was 0. 56% ( n = 5 ). The mean recovery of TPPS4 was 99.59％. In NH4C1-NH3· H2O buffers (pH 9.05), it was proved that BSA and TPPS4 could interact with each other and form 1:1 TPPS4-BSA supramolecular system. Moreover, the interaction between TPPS4 and BSA had been investigated by adding cyclodextrins (CDs). The interaction of TPPS4 with BSA was facilitated both by hydroxypropyl-β-CD (HP-3-CD) and sulforbutylether-β-CD (SBE-3-CD). Conclusion An electroanalytical method for TPPS4 has been established by LSV. The porphyrin drugs included by CDs could react with protein existing inside the human body easier. The consequences of this article also show that CDs will play important role in controlling and releasing the porphyrin drugs.

A substype analyse of peripheral blood CDS lymphocyte in patients with chronic hepatitis virus B / 中华检验医学杂志

Objective To discuss the relationship between the substype of peripheral blood CD8 lymphocyte in patients with chronic hepatitis virus B and clinic condition and the replication of HBV. Methods CD45RO, CD45RA and CD28 of peripheral blood CD8 lymphocyte were detected by flow cytometry with multicolor fluorescence technology in 107 patients with chronic hepatitis virus B and 20 healthy volunteers. Results The total quantity of CD8 lymphocyte in patientswith chronic hepatitis virus B was not different from that in controls. The percent of CD3+ CD8+/CD45R0+ cells in patients with chronic active hepatitis was significantly higher than that of the control (15.7?3. 35)% vs( 8. 56?1. 12)% , P

Effects of Clonidine-Displacing Substance on the Function of Isolated Islets from Normal Rats / 中国医师杂志

Objective To explore the effects of the clonidine-displacing substance(CDS)on the function of isolated islets from normal rats. Methods The SD rat islets were isolated by digestive method with collagenase and DNase, and incubated in RPMI 1640 culture medium overnight. Multiscreen Assay System was used to observe the effects of CDS on the function of the isolated islets. Insulin and glucagon were measured by RIA. Results Glucagon secretion of the isolated islets in incubation medium was inhibited by glucose. CDS could significantly inhibit glucagon secretion in concentration-dependent manner. Insulin secretion of the isolated islets was dependent on the glucose concentration of incubation medium. CDS could stimulate insulin secretion significantly. Nifedipine (Ca 2+ channel blocker) and diazoxide (K + channel opener) could inhibit the insulin release of the isolated islets, the effect of which could be abolished by CDS. Conclusion As an endogenous ligand of imidazoline receptors, CDS could stimulate insulin secretion, and inhibit glucagon release in the isolated islets.

Significance of Color Doppler Sonography in the Conservative Therapy of Adnexal Torsion / 대한산부인과학회잡지

Torsion of the adnexa is a well-known gynecologic cause of an acute surgical abdomen. Delay in diagnosis, inability to distinguish strangulation from necrosis, and fear of embolus dislodgement have made adnexectomy the accepted method of management of adnexal torsion. This condition occurs most commonly in the reproductive years, yet methods to preserve viable ovarian tissue have not been routinely used or evaluated. Therefore, in order to ascertain if color Doppler sonography(CDS) can detect adnexal viability, ultrasonography with CDS of the ovarian pedicle was performed in 27 patients in whom torsion of the ovarian tumor was confirmed surgically. We were able to identify a twisted vascular pedicle of the ovarian tumor by ultrasonography in 24 of 27 patients(88% detectability). In 10 patients in which pedicle arterial and venous blood flow was observed, the pathology specimens revealed normal, or edema with congestion, or early hemorrhage, but in the 9 cases where only arterial blood flow was observed or where there was no blood flow at all, pathology revealed hemorrhagic necrosis in all cases. In 5 cases where there was arterial blood flow the tumor was managed conservatively, either by detorsion or cytectomy, after which there was no cases of embolism or tumor recurrence during follow up ultrasonography. Normal follicular development and ovulation was also observed in these patients. In conclusion, for young women who are of child-bearing age in whom torsion of benign adnexal tumors is suspected, CDS should be conducted to detect torsion of the tumor and ascertain whether pedicle venous blood flow is present or not. If such blood flow is detected, the adnexa is considered to be viable and detorsion or cystectomy may be performed, thus preserving the ovary.

CD5 mRNA Overexpression in Lymphocytes of Allergic Patients / 대한면역학회지

PURPOSE: The CD5 molecules are pan-T cell antigens and are found on a minor subpopulation of B cells. CD5 antigens are involed in an intracellular signal transduction as well as in an intercellular signal transduction between CDS+ T cell/CD72+ B cell by CD5/CD72 interaction. CD5 antigens are known to be participated in classic immune reactions and in this study CDS mRNA expressions by lymphocytes were examined in allergic patients controls, acute febrile infectious disease controls and normal controls to elucidate the possibility of CDS involvement in allergic immune reactions. METHODS: Fifteen allergic patients, ten patients of acute febrile infectious disease patients and ten normal controls were studied. Venous blood was drawn and mononuclear cells were separated. T cells and B cells were separated using immunomagnetic beads. Total RNA was extracted and RT-PCR (reverse transcriptase - polymerase chain reaction) was done to detect CDS antigen mRNA expression. RESULTS: 1) CDS mRNA overexpressions were detected in allergic patient controls as compared to that in acute febrile infectious controls. CDS mRNA was not detected in normal controls. Semiquantitative CD5 mRNA expressions were measured as relative expressions of CD5 to GAPDH. Relative quantities of CD5 mRNA expressions were 90.656.24% in allergic patient controls and 23.76+3.58% in acute febrile infectious patients. CONCLUSIONS: CDS mRNA overexpression is a characteristic phenomenon in allergic immune reactions. From these result, CD5/CD72 pathway might be the preference immune mechanism in allergic immune reaction and the further study for the exact mechanism of CDS involvement in allergic immune reactions may be necessary

Avances en inmunología y respuesta del huésped en enfermedad periodontal / Advances in immunology and host response in periodontal disease

El entendimiento de la Respuesta Inmune del individuo a la infección bacteriana periodontal, resulta importante para establecer nuevos y/o mejores criterios diagnosticos o pronosticos. También sirve, para proponer terapias más racionales en el tratamiento de las Periodontitis. Esta revisión pretende actualizar sobre los avances en el área de la inmunobiologia y la aplicación de dichos conocimientos en el entendimiento de la Inmuno/patogénesis de las Enfermedades Periodontales. Se analizan los siguientes aspectos: las células del sistema inmune, las moléculas de superficie celulares, el complejo mayor de histocompatibilidad; (CMH); los antigenos de diferenciación (CDs); los receptores, las adhesinas como las integrinas, los Icam, las selectínas, las adresinas vasculares; las moléculas efectoras como los anticuerpos, las citoquínas, el complemento, los mediadores de la inflamación como los proteoglícanos, las kínínas, las anafílotoxinas, los productos del ácido araquídónico como las prostaglandinas y los leucotrienos, aminas activas como la histamina, los mecanismos de inmunidad innata y, finalmente, la respuesta inmune del huésped en las enfermedades periodontales.

Understanding the role of the immune system against periodontal bacterial infections may provide the basis for better and more rational strategies for the treatment of periodontitis. In this review the advances in immunobiology are discussed. They offer many aplications in the periodontic area and facilitate understanding of immunopathogenesis of periodontal diseases. The followed topics are discussed: immune cells and their regulatory cell surface molecules, such as the Major Histocompatibility Complex (CMH), cluster of differentation antigens (CD antigens), the effector systems set into motion such as phagocytes and citotoxic cells and the effector molecules such as antibodies, complement and citokines, the cell surface receptors as Integrins, Icams, Selectines, CD 44 homing, the mediators including the proteoglycans, the kinins, the anaphylatoxins, the products of araquidonic metabolism such as protaglandins and leumtrienes, the biologically active amines as histamine and serotonine, the innate immunity and the host responses in periodontitis, facuses on studies that show correlation between HLA and neutrophil abnormalities up to recognition that the critical axis is neutrophillantibody/complement for protection against periodontopatic bacteria. Abnormalities in those systems often lead to increased periodontal susceptibility. The precise role of immune system in periodontitis remains to be elucidated, but recent advances in these areas offer a predictable guide for the treatment of those diseases.

Study on the relationship between changes of lymphocyte subpopulation and level of soluble interleuckin 2 receptor in peripheral blood and serum of patients with primary hepatocellular carcinoma / 中国免疫学杂志

T lymphocyte subpopulation and level of soluble interleuckin 2 receptor in peripheral bloodand serum of primary hepatocellular carcinoma and donor were tested.The results show that de-crease of T lymphocyte subpopulations is related with increase of level of soluble interleuckin2 re-ceptor in patients with primary hepatocellular carcinoma.