Parkinson׳s disease-related modulation of functional connectivity associated with the striatum in the resting state in a nonhuman primate model.

The goal of this study was to describe Parkinson׳s disease (PD)-related modulation of functional connectivity (FC) associated with the striatum in the resting state in a nonhuman primate model of early-stage PD. Weekly intravenous injections of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) (0.5 mg/kg body weight) were performed until parkinsonian motor symptoms developed in four macaques.

Receptor binding characteristics and cytotoxicity of insulin-methotrexate.

Aim: To characterize the receptor binding affinity and cytotoxicity of insulin-methotrexate (MTX) for the potential utilization of insulin as carriers for carcinoma target drugs.

Methods: MTX was covalently linked to insulin. Insulin-MTX conjugate was purified by Sephadex G-25 column and analyzed by high performance liquid chromatography.

[Preparation of liposome-mediated 99m-technetium-labeled antisense oligonucleotides of c-myc mRNA].

To explore the preparation method of liposome-mediated 99m-technetium-labeled antisense oligonucleotides of c-myc mRNA and lay foundations for antisense imaging and treatment, antisense oligonucleotides (DNA) with 15 bases and di-functional chelate, hydrazino nicotinamide derivatives, were synthesized. After DNA combined with chelate, they were labeled with 99m-technetium to form compounds, 99mTc-chelate-DNA (99mTc-DNA), and were purified through Sep-Pak reverse column(C18, Waters) by using methanol and water as eluent. The leaching curve was made; the labeling efficiency was calculated.

[Comparative studies on the banding characteristics of insulin receptor in human hepatocellular carcinoma and adjacent liver tissues].

Objective: To investigate the expression of insulin receptor in human hepatocellular carcinoma and it's adjacent tissue.

Methods: The human hepatocellular carcinoma and it's adjacent tissue specimens were obtained from 12 patients with histologically confirmed hepatocellular carcinoma at surgery and were immediately frozen under -80 degrees C. Insulin was radioiodinated using Ch-T method.

[Study on the biological character of liposome-mediated 99m-technetium labeled antisense oligonucleotide for c-myc mRNA].

Objective: To probe the biological character of liposome-mediated 99m-technetium-labeled antisense oligonucleotide of c-myc mRNA, and lay the foundations for clinical research on antisense image or treatment.

Methods: Antisense, sense and scrambled oligonucleoyide, each containing 15 bases, were synthesized elsewhere. The rates of liposome-entrapped 99mTc-DNA and 99mTc-DNA combination with plasma protein were tested through trichloroacetic acid precipitation.

[Preparation and in vitro killing effect of adriamycin-loaded immunonanosphere against hepatoma led by F (ab')2 Fragment of monoclonal antibodies].

Objective: To study the preparation method and in vitro killing effect of adriamycin (ADR)-loaded human serum albumin (HSA) immunonanosphere (HAb18 F(ab')2-ADR-HSA-NP) against hepatoma led by F(ab')2 fragment of human hepatoma specific monoclonal antibody HAb18.

Methods: After ADR loaded HSA nanosphere (ADR-HSA-NP) was prepared in the emulsifying high temperature solidifying way, HAb18 F(ab')2-ADR-HSA-NP was prepared using the modified N-succinimidyl 3-(2-pyridyldithio) propionate (SPDP) method. In vitro binding characters of HAb18 F(ab')2-ADR-HSA-NP and ADR-HSA-NP and hepatoma cell SMMC-7721 were observed under optical microscopy and electronic microscopy.

[The primary applications of ¹⁵³Sm-EDTMP plus chemotherapy in the treatment of bone metastasis of lung cancer].

Background: To study the clinical effects of ¹⁵³Sm-EDTMP plus chemotherapy in the treatment of bone metastasis of lung cancer.

Methods: One hundred and ten lung cancer patients with one metastasis [male 82 and female 28, aged from 32 to 76 yrs; squamous cell carcinoma 28, adenocarcinoma 27, small cell lung cancer (SCLC) 7, mix type 41, alveolar carcinoma 7] who did not undergo an operation were entered into this study. The patients were divided into 3 groups: ¹⁵³Sm-EDTMP therapy only (37 cases), ¹⁵³Sm-EDTMP plus chemotherapy after 3 days (42 cases), 30 days after chemotherapy plus ¹⁵³Sm-EDTMP (31 cases).

Samarium-153-EDTMP bone uptake rate and its relation to therapeutic effect.

Objective: To evaluate the measurement of Samarium-153 ethylenediaminetetramethylene phosphonic acid ((153)Sm-EDTMP) bone uptake rate using whole-body scintigraphy and analyze the relationship between bone uptake rate and therapeutic effect.

Methods: Sixty-six patients with painful bony metastases from prostate (n = 15), lung (n = 20), breast (n= 18), nasopharyngeal carcinoma (NPC) (n=5), colon (n=2), kidney (n=2) and unknown cause (n=4) carcinoma were examined with whole-body scintigraphy 10 min and 5 h post administration of (153)Sm-EDTMP. Bone uptake rate was then calculated.