Biomedical subjects

Juan Li

Publications and source records attributed to Juan Li.

At least 145 records · Page 8Linked to original sources

PubMed2003

Absence of SCL mutations in myeloid malignancies.

Transcription factors play a central role in the pathogenesis of acute leukaemia. Genes encoding transcription factors are frequently perturbed by chromosome rearrangements. More recently acquired point mutations have been described in a number of important genes for normal haematopoiesis. The stem cell leukaemia (SCL) gene encodes a basic helix-loop-helix transcription factor and is upregulated by chromosome rearrangements in T-acute lymphoblastic leukaemia. SCL function is essential for the development of both primitive and definitive haematopoiesis. We searched for SCL mutations in myeloid leukaemias and chronic myeloproliferative disorders. Our data demonstrated that SCL point mutations were rare in acute myeloid leukaemia and myeloproliferative disorders.

Acute Disease↗

PubMed2003

Development of enhancer trap lines for functional analysis of the rice genome.

Enhancer trapping has provided a powerful strategy for identifying novel genes and regulatory elements. In this study, we adopted an enhancer trap system, consisting of the GAL4/VP16-UAS elements with GUS as the reporter, to generate a trapping population of rice. Currently, 31 443 independent transformants were obtained from two cultivars using Agrobacterium-mediated T-DNA insertion. PCR tests and DNA blot hybridization showed that about 94% of the transformants contained T-DNA insertions. The transformants carried, on average, two copies of the T-DNA, and 42% of the transformants had single-copy insertions. Histochemical assays of approximately 1000 T0 plants revealed various patterns of the reporter gene expression, including expression in only one tissue, and simultaneously in two or more tissues. The expression pattern of the reporter gene in T1 families corresponded well with the T0 plants and segregated in a 3 : 1 Mendelian ratio in majority of the T1 families tested. The frequency of reporter gene expression in the enhancer trap lines was much higher than that in gene trap lines reported previously. Analysis of flanking sequences of T-DNA insertion sites from about 200 transformants showed that almost all the sequences had homology with the sequences in the rice genome databases. Morphologically conspicuous mutations were observed in about 7.5% of the 2679 T1 families that were field-tested, and segregation in more than one-third of the families fit the 3 : 1 ratio. It was concluded that GAL4/VP16-UAS elements provided a useful system for enhancer trap in rice.

Base Sequence↗

PubMed2003

[Influence of thalidomide on bone marrow microenvironment in refractory and relapsed multiple myeloma].

BACKGROUND & OBJECTIVE: More and more studies indicated that microenvironment plays a major role in growth, survival, and drug resistance of myeloma cells. Thalidomide is one of agents targeting the bone marrow microenvironment. This study was conducted to investigate the mechanism of thalidomide by observation of influence of thalidomide on bone marrow microenvironment in refractory and relapsed multiple myeloma. METHODS: The expression of ICAM-1 and VCAM-1 of bone marrow stromal cell (BMSC) membrane of refractory and relapsed multiple myeloma was measured using flow cytometry. The expression of IL-1beta(m)RNA, IL-6mRNA, and TNF-alpha(m)RNA in myeloma BMSC was measured by semiquantitative RT-PCR. The serum levels of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor(bFGF) were measured by ELISA. RESULTS: The average values of fluorescence of ICAM-1 and VCAM-1 on the myeloma BMSC membrane were 13.28+/-4.26 and 10.35+/-2.47, respectively; while the average values of fluorescence after treatment effectively with thalidomide were both lower (4.29+/-0.98 and 3.54+/-0.62) (P< 0.01, P< 0.05). The ratios of IL-1beta(m)RNA, IL-6(m)RNA, and TNF-alpha mRNA to beta-actin of the myeloma BMSC were 1.83+/-0.64, 24.52+/-11.46, and 3.42+/-1.83, respectively; while the ratios after treatment effectively with thalidomide were all lower (0.58+/-0.11, 13.47+/-14.31, and 1.25+/-0.76)(P< 0.05,P< 0.05,P< 0.01). There was no significant difference between the values of ICAM-1 and VCAM-1 or among the ratios of IL-1beta(m)RNA, IL-6(m)RNA, and TNF-amRNA to beta-actin of the myeloma BMSC before and after treatment ineffectively with thalidomide (all P >0.05). The serum levels of VEGF and bFGF of the patients were (150.26+/-19.33) ng/L and (23.78+/-13.63) ng/L, respectively. The serum levels of VEGF and bFGF were higher after treatment (effectively and ineffectively) than those before treatment (P< 0.002, P< 0.005). CONCLUSION: Thalidomide can not only inhibit angiogenesis, but also abrogate the adhesion of multiple myeloma cells to bone marrow stromal cells.

Aged↗

PubMed2003

Reproducibility of 11C-raclopride binding in the rat brain measured with the microPET R4: effects of scatter correction and tracer specific activity.

UNLABELLED: A new generation of commercial animal PET cameras may accelerate drug development by streamlining preclinical testing in laboratory animals. However, little information on the feasibility of using these machines for quantitative PET in small animals is available. Here we investigate the reproducibility of microPET imaging of (11)C-raclopride in the rat brain and the effects of tracer-specific activity and photon scatter correction on measures of D2 receptor (D2R) availability. METHODS: Sprague-Dawley rats (422 +/- 29 g; n = 7) were anesthetized with ketamine/xylazine and catheterized for tail vein injection of (11)C-raclopride. Each animal was positioned prone in the microPET, centering the head in the field of view. MicroPET data was collected for 60 min-starting at (11)C-raclopride injection-and binned into 24 time frames (6 x 10 s, 3 x 20 s, 8 x 60 s, 4 x 200 s, 3 x 600 s). In 3 studies, (11)C-raclopride was administered a second time in the same animal, with 2-4 h between injections. In a fourth animal, raclopride (1 mg/kg) was coinjected with (11)C-raclopride for the second injection. Three rats received a single dose of (11)C-raclopride. The range of doses for all studies was 6.11-18.54 MBq (165-501 micro Ci). The specific activity at injection was 4.07-48.1 GBq/ micro mol (0.11-1.3 Ci/ micro mol). Region-of-interest analysis was performed and the distribution volume ratio (DVR) was computed for striatum/cerebellum using sinograms uncorrected and corrected for scatter using a tail-fit method. RESULTS: Test-retest results showed that the (11)C-raclopride microPET DVR was reproducible (change in DVR = -8.3% +/- 4.4%). The average DVR from 6 rats injected with high specific activity (<4 nmol/kg) was 2.43 +/- 0.19 (coefficient of variation = 8%). The DVR for the blocking study was 1.23. The DVR depended on the mass of tracer (11)C-raclopride injected for doses >1.5 nmol/kg. Scatter fractions within the rat head were approximately 25%-45% resulting in an average increase of DVR of 3.5% (range, 0%-10%) after correction. CONCLUSION: This study shows that the (11)C-raclopride microPET-derived DVR is reproducible and suitable for studying D2R availability in the rat brain. MicroPET sensitivity was sufficient to determine reproducible DVRs from (11)C-raclopride injections of 9.25 MBq (approximately 250 micro Ci). However, the effect of tracer mass on the DVR should be considered for studies using more than approximately 1-2 nmol/kg raclopride, and scatter correction has a measurable impact on the results.

Animals↗

PubMed2003

[Values of soluble thrombomodulin and von Willebrand factor judging reject reaction in liver transplantation].

OBJECTIVE: To find sensitive and specific laboratory examination items for early diagnosing and monitoring liver transplantation reject reaction. METHODS: Randomly investigate 41 liver transplantation patients, among them there were 16 patients with reject reaction (including 12 with acute rejection, 4 with chronic rejection). Plasma soluble thrombomodulin (STM) and von Willebrand factor (vWF) levels were measured before operation and every other day after operation. RESULTS: Plasma STM level increased significantly after operation, two days before rejection and after acute rejection (5.58 ng/ml +/- 0.42 ng/ml, 5.93 ng/ml +/- 0.45 ng/ml, and 7.88 ng/ml +/- 0.29 ng/ml, respectively), so did vWF level (101.2% +/- 4.68%, 104.3% +/- 5.78%, and 127.7% +/- 5.74%, respectively). STM level was much higher in acute rejection than that in chronic rejection (7.88 ng/ml +/- 0.29 ng/ml vs. 6.35 ng/ml +/- 0.54 ng/ml, t = 2.46, P < 0.05), in no reaction group after impacting therapy than in effective group (8.30 ng/ml +/- 0.19 ng/ml vs. 3.82 ng/ml +/- 0.22 ng/ml, t = 12.98, P < 0.01), and in dead group after treatment than in living group (7.98 ng/ml +/- 0.18 ng/ml vs. 6.51 ng/ml +/- 0.41 ng/ml, t = 3.39, P < 0.01). CONCLUSIONS: Plasma STM and vWF can be taken as laboratory items for monitoring liver transplantation rejection. Plasma STM can act as not only an early prognosticating marker, but also suitable to distinguish acute from chronic reject reaction, and as a marker for monitoring impacting therapy effect and judging prognosis.

Adolescent↗

PubMed2003

[Dual regulation by delta opioid receptor agonists on the delayed rectified potassium channels in NG108-15 cells].

OBJECTIVE: To investigate the dual effects by the delta opioid receptor agonists DPDPE on the delayed rectified potassium channels in NG108-15 cells. METHODS: A series of outward currents were evoked in NG108-15 cells by depolarizing voltage from -50 mV to +80 mV at holding potential of -90 mV. These currents were delayed rectified potassium currents. Relatively selected delta opioid receptor agonists DPDPE of higher and lower concentrations were used to modulate the delayed rectified K+ current in NG108-15 cells. Opioid receptor antagonist Naloxone (NAL) and relatively selected delta opioid receptor antagonist Naltrindole (NTI) were used in the present experiments for the characterization of the actions of opioid receptors. RESULTS: The relatively higher concentrations of delta opioid receptor agonist DPDPE (> or = 10(-6) mol/L) significantly increased the amplitude of the delayed rectified K+ current. On the contrary, the relatively lower concentrations of DPDPE (< or = 10(-12) mol/L) decreased the amplitude of the delayed rectified K+ current (P < 0.05). Furthermore both the increase and decrease were time-dependent. CONCLUSIONS: delta opioid receptor agonist has dual regulatory effects on the delayed rectified potassium channels in NG108-15 cells.

Animals↗

PubMed2003

[Effect of G protein in the dual regulation of opioid receptor agonist on the delayed rectified potassium channels].

OBJECTIVE: To observe the role of G protein in the dual regulation of opioid receptor agonist on the delayed rectified potassium channels. METHODS: Using whole-cell patch-clamp techniques applied to NG108-15 cells, investigate the effect of opioid receptor agonist on the delayed rectified potassium channels by administration of Guanosine-5'-0'-2-thiociphosphate (GDP beta S), Pertusis Toxin (PTX), Tetroacetic acid nueleoside diphosphate kinase (NDPK) and Adenosine-3' 5' cyclic monophosphate cAMP in the pipette solution. RESULTS: (1) GDP beta S could block the changes induced by both high and low concentration of (D-Pen2.5)-enkephalin (DPDPE) (P < 0.05). (2) PTX could inhibit the excitative regulation on K+ channel by high concentration of DPDPE (P < 0.05). But CTX had no effect on K+ channel caused by DPDPE. (3) UDP could block the excitative effect of K+ channel by high concentration of NDPK, while have no changes on the inhibitory effect caused by low concentration of opioid agonists. (4) cAMP took part in the regulation in high concentration of agonist administration (P < 0.05), while no changes for low concentration of agonists. CONCLUSIONS: Dual changes were observed on delayed rectifier potassium channel by agonist treatment on NG108-15 cells. The excitative effect was Gi/o coupled in high concentration of agonist incubation, related to cAMP. While the inhibitory effect was possibly induced by G protein beta gamma subunit directly.

Animals↗

PubMed2003

[Comparison of two conditioning regimens in treatment of leukemia by allogeneic hematopoietic stem cell transplantation].

BACKGROUND & OBJECTIVE: The conditioning regimens are the critical factors in the allogeneic hematopoietic stem cell transplantation. This study was conducted to compare the effectiveness and side-effects of two conditioning regimens in allogeneic hematopoietic stem cell transplantation (allo-HSCT). METHODS: Twenty-one cases received busulfan(BU) 16 mg/kg plus cyclophosphamide(CY) 120 mg/kg,the other 23 cases received total body irradiation(TBI) 7.5-8.5 Gy plus CY 120 mg/kg regimen. RESULTS: The 3-year disease-free survivals (DFS) were 61.5% in BU/CY group and 64.7% in TBI/CY group, respectively (P >0.05). The relapse rates were 23.8% and 26%, respectively, without significant difference (P >0.05). The incidence of liver damage in the BU/CY group was higher (80.9%) than that in the TBI/CY group (54.3%) (P< 0.05), while no case developed hepatic veno-occlusive disease. Stomatitis and gastrointestinal toxicity were significantly lower in the BU/CY group (33.3% and 42.9%) compared with TBI/CY group (78.2% and 78.2%), respectively (P< 0.05). Bladder toxicity (23.8% and 26%) and pulmonary toxicity(14.3% and 13%) were similar in the two groups(P >0.05), while one patient in TBI/CY group developed grade IV pulmonary toxicity, which is lethal. No case was found to have cardiac, renal, or central nervous system grade I toxicity. CONCLUSION: The two groups have equal effectiveness, BU/CY regimen is relatively easy to administer and well tolerated with low extramedullary toxicity.

Adolescent↗

PubMed2003

[Effects of intervening measures on postpartum depression].

OBJECTIVE: To study the related factors of postpartum depression (PPD) and the effects of intervening measures to PPD incidence. METHODS: 1 597 pregnant women selected from our antenatal care clinic were investigated by using the hospital anxiety and depression questionnaire (HAD) during pregnancy and the Edinburgh postpartum depression scale (EPDS) after childbirth. All the enrolled women were randomly divided into control group and intervening group by the proportion of 1 to 2. Six intervening measures were used in the latter group. RESULTS: (1) There were 49 women whose HAD >or= 11 score (anxiety-depression mood) with 28 cases (57.1%) had got postpartum depression in the control group. In the intervening group, however, there were 94 women whose HAD >or= 11 score with 24 cases (25.5%) had got postpartum depression. There is a significant difference between the two groups (P < 0.01). (2) There were 71 (13.0%) women whose EPDS >or= 13 score (postpartum depression) in the control group. In the intervening group, however, there were 63 (6.0%) women whose EPDS >or= 13 score. There had a significant difference between the two groups (P < 0.01). (3) PPD women had higher N and P scores than those of non-PPD women (P < 0.01). CONCLUSION: (1) Prenatal anxiety, depression, negative personality and postpartum psychological and physiological changes were high risk factors to PPD. (2) Psychological personality play an important role in PPD. (3) Incidence of PPD was significantly reduced by social support.

China↗

PubMed2003

[Analysis on the geologic background and physicochemical properties of cultivated soil of Flos Lonicerae in the geo-authentic and non-authentic producing areas].

OBJECTIVE: To study the relationship between the Geo-authentic and Geologic Background System (GBS) and physicochemical properties of cultivated soil in the Flos Lonicerae. METHOD: The analysis on the physicochemical properties of cultivated soil, the geologic background system in 5 producing areas of Flos Lonicerae was compared. RESULT: The distribution of genuine Flos Lonicerae was restricted by GBS, which was mainly restricted in the temperate continental monsoon semi-arid climate zone between north latitude 34-36 degrees and east longitude 113-118 degrees. CONCLUSION: The most suitable soil for the genuine Flos Lonicerae is the neutral or weak alkali sandy loamy soil with higher ion exchanging capacity, and the soils from those producing areas are determined by soil-forming parent materials.

China↗

PubMed2003

[Capacity of HIV enzyme immunoassay diagnostic kits to detect antibodies against different genotypes of HIV].

OBJECTIVE: To investigate the capacity of commercial HIV enzyme immunoassay (EIA) diagnostic kits to detect antibodies against different genotypes of HIV. METHODS: HIV RNA was detected with RT-PCR from samples positive for HIV antibody. The purified PCR products were sequenced directly and the genotypes of HIV from samples were analyzed. The samples for each genotype of HIV were diluted and the diluted samples were detected with different HIV EIA diagnostic kits. RESULTS: All 20 samples positive for HIV antibody were also positive for HIV RNA; 9 of 20 isolates were genotype B, 9 of them were genotype C or CRF BC, 2 of them were CRF AE. The sensitivity of different HIV EIA diagnostic kits to detect antibodies against different genotypes of HIV was not significantly different. CONCLUSION: The capacity of commercial HIV diagnostic kits to detect antibodies against different HIV genotypes may not be significantly different.

Enzyme-Linked Immunosorbent Assay↗

PubMed2002

Genetics of isoprenoid biosynthesis in Paracoccus zeaxanthinifaciens.

The genes coding for all the enzymes involved in the conversion of acetyl-CoA to farnesyl diphosphate (FPP) in the zeaxanthin-producing bacterium Paracoccus zeaxanthinifaciens were cloned and characterized. Two genes encoding enzymes catalysing the condensation of two acetyl-CoA molecules to acetoacetyl-CoA were found. The six enzymes involved in the conversion of acetyl-CoA and acetoacetyl-CoA to isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP) are grouped in an operon, designated the mevalonate operon. The gene encoding the enzyme catalysing two consecutive condensations, IPP and DMAPP to geranyl diphosphate (GPP) and IPP and GPP to FPP, is not clustered with any other gene encoding an enzyme of the isoprenoid pathway. Genes encoding enzymes involved in the biosynthesis of poly-hydroxyalkanoate and non-carotenoid isoprenoids found in P. zeaxanthinifaciens are also presented.

Acetyl Coenzyme A↗

PubMed2002

Adeno-associated virus vector-mediated minidystrophin gene therapy improves dystrophic muscle contractile function in mdx mice.

Duchenne muscular dystrophy (DMD) is the most common disabling and lethal genetic muscle disorder, afflicting 1 of every 3500 males. Patients with DMD experience progressive muscle degeneration and weakness and succumb to respiratory or cardiac failure by their early twenties. No treatment is currently available for DMD. Mutations in the dystrophin gene result in lack of a functional dystrophin protein in striated muscle, which induces instability in the muscle cell membrane leading to persistent muscle injury after contraction. We have previously created novel minidystrophin genes and demonstrated that adeno-associated virus (AAV)-mediated intramuscular delivery of the minigenes effectively ameliorated mdx dystrophic histopathology and led to normal cell membrane integrity for more than 1 year. In this paper, we investigated whether AAV-minidystrophin could also improve mdx muscle contractile function. Two-month-old adult male mdx mice, with established muscular dystrophy, were given a single-dose injection of an AAV-minidystrophin vector in the tibialis anterior (TA) muscle of one leg, with the untreated contralateral leg used as a control. The treated TA muscle showed both (1) a significant increase in isometric force generation and (2) a significant increase in resistance to lengthening activation-induced muscle force decrements. We conclude that AAV-minidystrophin gene treatment is effective in improving mdx muscle contractile function.

Animals↗

PubMed2002

Derivative chromosome 9 deletions in chronic myeloid leukemia: poor prognosis is not associated with loss of ABL-BCR expression, elevated BCR-ABL levels, or karyotypic instability.

Deletions of the derivative chromosome 9 have recently been reported in chronic myeloid leukemia. These deletions are large, occur at the time of the Philadelphia (Ph) translocation, span the translocation breakpoint, and represent a powerful prognostic indicator. However, the molecular mechanisms responsible for the poor prognosis associated with deletions are obscure, and several possible models are investigated here. First, we demonstrate that all derivative chromosome 9 deletions detected by fluorescence in situ hybridization were associated with an absence of ABL-BCR expression. However, loss of ABL-BCR expression also occurred without an overt deletion, suggesting the existence of other mechanisms by which ABL-BCR transcription can be abolished. Furthermore, analysis of survival in 160 patients demonstrated that loss of ABL-BCR expression, in contrast to deletion status, was not an indicator of poor prognosis. Second, we addressed the possibility that concomitant small deletions of the Ph chromosome modulate BCR-ABL transcription. Real-time reverse-transcription polymerase chain reaction was used to demonstrate that derivative chromosome 9 deletions were not accompanied by altered levels of BCR-ABL transcripts. Third, deletions may represent a consequence of genetic instability within the target cell at the time of the Ph translocation, with the poor prognosis reflecting a predisposition to subsequent additional genetic alterations. However, patients with deletions do not exhibit an increased frequency of secondary cytogenetic changes following disease progression. Taken together, these data support a model in which deletions of the derivative chromosome 9 result in rapid disease progression as a result of the loss of one or more genes within the deleted region.

Adult↗

PubMed2002

Rescue of the lethal scl(-/-) phenotype by the human SCL locus.

The stem cell leukemia (SCL) gene encodes a basic helix-loop-helix transcription factor with a critical role in the development of both blood and endothelium. Loss-of-function studies have shown that SCL is essential for the formation of hematopoietic stem cells, for subsequent erythroid development and for yolk sac angiogenesis. SCL exhibits a highly conserved pattern of expression from mammals to teleost fish. Several murine SCL enhancers have been identified, each of which directs reporter gene expression in vivo to a subdomain of the normal SCL expression pattern. However, regulatory elements necessary for SCL expression in erythroid cells remain to be identified and the size of the chromosomal domain needed to support appropriate SCL transcription is unknown. Here we demonstrate that a 130-kilobase (kb) yeast artificial chromosome (YAC) containing the human SCL locus completely rescued the embryonic lethal phenotype of scl(-/-) mice. Rescued YAC(+) scl(-/-) mice were born in appropriate Mendelian ratios, were healthy and fertile, and exhibited no detectable abnormality of yolk sac, fetal liver, or adult hematopoiesis. The human SCL protein can therefore substitute for its murine homologue. In addition, our results demonstrate that the human SCL YAC contains the chromosomal domain necessary to direct expression to the erythroid lineage and to all other tissues in which SCL performs a nonredundant essential function.

Animals↗

PubMed2002

High performance liquid chromatography of phenolic choline ester fragments derived by chemical and enzymatic fragmentation processes: analysis of sinapine in rape seed.

High-performance liquid chromatography methods based on reversed-phase chromatography (RPC) and normal phase chromatography (NPC) were introduced for the separation of some representative phenolic acids, choline and betaine, which are the fragments of phenolic choline esters. Sinapine, which is the major phenolic choline ester found in rape seed, was quantitatively hydrolyzed to choline and sinapic acid upon treatment with a solution of sodium hydroxide at room temperature. Choline was further converted to betaine by incubating the base hydrolyzate with choline oxidase. Both sinapic acid and betaine formed the basis for the quantitative determination of sinapine in rape seed by RPC and NPC, respectively. The amounts of sinapine found in rape seed via either of the two fragments (i.e., sinapic acid or betaine) were in very close agreement.

Betaine↗

PubMed2002

Suppression of intracranial human glioma growth after intramuscular administration of an adeno-associated viral vector expressing angiostatin.

Despite various therapeutic interventions, glioblastoma multiforme (GBM) is one of the most highly vascularized neoplasms in humans with poor prognosis. In this study, we show that a single i.m. injection of an adeno-associated viral (AAV) vector expressing angiostatin, a potent angiogenic inhibitor, effectively suppresses human glioma growth in the brain of nude mice. Approximately 40% of the tumor-bearing mice treated with AAV-angiostatin vector survived for >10 months (the duration of the experiments). In contrast, 100% of the tumor-bearing mice in the control groups, with or without i.m. injection of a control vector AAV-GFP, died because of excessive tumor burden by 6 weeks. High levels of angiostatin produced by the AAV vector were detected in blood circulation for >250 days after the one-time vector injection. The secreted angiostatin specifically targeted neovessels in the brain tumors, as evidenced by the diminished vessel densities and increased apoptosis of tumor cells surrounding these neovessels. Our study thus demonstrates that AAV-mediated antiangiogenesis gene therapy offers efficient and sustained systemic delivery of the therapeutic product, which in turn effectively suppresses glioma growth in the brain.

Adenoviridae↗

PubMed2002

Evaluation of antigen-based heteropolymer for treatment of systemic lupus erythematosus in a nonhuman primate model.

Autoantibodies that react with double-stranded DNA (dsDNA) are a hallmark for diagnosis of systemic lupus erythematosus (SLE) and are also considered the pathogenic subset that is most associated with lupus nephritis. As an agent to remove the pathogenic dsDNA antibodies from the circulation of SLE patients, we are developing an antigen-based heteropolymer (AHP). The AHP consists of a monoclonal antibody to the complement receptor (CR1) cross-linked to salmon testis dsDNA to effect clearance of anti-DNA antibodies by binding them to erythrocyte CR1. Utilizing a cynomolgus monkey model for SLE in which we infused plasma from SLE patients containing a high titer of high-avidity anti-dsDNA antibody, we have evaluated the safety and efficacy of AHP infusion. The results demonstrate that AHP rapidly (within 2 min of infusion) binds to monkey erythrocytes without causing any toxicological effects. We also demonstrate that human Ig (G+M) antibodies are rapidly bound to the AHP-erythrocyte complex. These events are mirrored in their kinetics by a substantial drop in the level of high-avidity dsDNA antibody in the plasma.

Animals↗