Calcium Channel Blockers ; pharmacology ; therapeutic use ; Cerebral Infarction ; drug therapy ; Coronary Disease ; drug therapy ; Humans ; Pyrazines ; pharmacology ; therapeutic use ; Vasodilator Agents ; pharmacology ; therapeutic use

Selection and affinities of Cd binding peptides were assayed by phage random dodecapeptide library and affinity chromatography. Two Cd binding peptides were obtained, it was found that the affinities of Cu~ 2+ ,Co~ 2+ ,Zn~ 2+ ,Ni~ 2+ for Cd binding peptides were higher than that of Cd~ 2+ and Cr~ 2+ after detection of the amplified Cd binding peptides displayed phages to different heavy metal-charged resins; the detoxification of E.coli to Ni~ 2+ and Cd~ 2+ was enhanced when infected by Cd binding peptide displayed phages as compared with those of the control. The interaction of Cd binding peptide displayed phages with heavy metals charged resins was also observed under microscope. The work would be of great value and consequences for the study of interaction between heavy metals and proteins(peptides), as well as thedetoxification and bioremediation of heavy metals.

AlM: To explore the different ages of congenital nasolacrimal duct obstruction in infants, take different treatment methods at different times.
METHODS:The 87 cases of 102 children were divided into three different age groups: the first group of 25d-3mo of age 21 cases 26 eyes; The second group >3mo-7mo 31 cases 36 eyes;The third group >7-24mo of age 35 cases 40 eyes. For the first group of infants, the implementation of the lacrimal sac nasolacrimal duct massage + eye drops; for the second group of infants, carry lacrimal pressure washing treatment; for the third group of infants, the implementation of the nasolacrimal duct probing treatment.
RESULTS: The first group of children through the nasolacrimal duct sac massage + drops tobramycin eye drops treatment unobstructed 12, the cure rate was 46. 2%;The second group of children through pressurized irrigation treatment lacrimal patency by 33, the cure rate was 91. 7%; The third group of children through the nasolacrimal duct probing unobstructed 36 treatment, the cure rate was 90. 0%. The second and third group were better than the first group (χ2=15. 71, P<0. 01;χ2=15. 27, P<0. 01);the treatment effect of the second and third groups was no significant difference (χ2=0. 02, P>0. 05).
CONCLUSlON:lnfants with congenital nasolacrimal duct obstruction should distinguish between ages, taking different treatments, in order to obtain a better therapeutic effect, and lacrimal pressure washing is the preferred way of treating infants with congenital nasolacrimal duct obstruction.

Objective Explore an approach with which stem cell can be used to cure traumatic spinal cord. Methods To better repair spinal cord injury, adult Sprague-Dawley (SD) rat MSCs was isolated and induced to differentiate into neuron-like cells with a Chinese medicine, Musk's polypeptide named Musk-1 in vitro and be seeded into microsurgical transectional model of adult rat spinal cord with cell differentiation and transplantation techniques. Results After cell transplantation, animals seeded with the rMSCs-derived neuron-like cells promoted significant improvement in function after spinal cord (P＜0.05,effective observation for 90 days ) when compared to the lesion-control group. Histology and immunocytochemical analysis confirmed a large number of rMSCs-derived neuron-like cells survived well in the transplantation zoon and numerous cells migrated within the host adjacent tissues as far as 6millimeters above and below the border of the lesion. Fluorescence gold retrograde tract tracing analysis revealed the positive motor neuron of fluorescence gold mark was found in the head side of rat spinal marrow ,corpus rubrum ofmesencephalic and corticospinal tract fibers. This suggested that corticospinal tract fibers of spinal cord area got regeneration and passed through the lession to reach the tail of spinal marrow.Conclusion These findings demonstrated that "pre-programmed" rMSCs can survive, migrate, integrate as well as restore spinal function and behavior in the microsurgical transectional model of rat spinal cord, and may serve as a suitable approach to traumatic spinal cord injury.

Objective To further investigated the effect of minocycline on the inhibition of microglial activation and subsequent protection of nigral DA neuron.Methods 20 rats injected with LPS in the substantia nigra (SN) were randomly divided into two groups (LPS group and LPS+Minocycline group).The behavior was observed on the 7~(th) d and 14~(th) d.The immunohistoehemistry,in situ hybridization and Western-blot were used to detect the levels of positive neuron,mRNA,protein of TH and OX-42. Results The slightly rotational behavior was observed in LPS+Minoeyeline group.The majority of mieroglias were activated in the two groups.Some microglia in the SNpc remained ramified in LPS+ Minocycline group.The numbers of hypertophie microglia in LPS+Minoeyeline group were less than that in LPS group.Western-blot showed that the protein of OX-42 in two LPS groups was higher than in normal group(P

This study was aimed to evaluate whether human mesenchymal stem cell (MSC) and the Stro-1 positive subgroup have inducing immune tolerance effect in mouse skin graft model. Human MSC were isolated and cultured from bone marrow-derived mononuclear cells of healthy adults, and Stro-1 positive cells were sorted out. Female C57BL/6 mice and female BALB/c mice were respectively used as donors and recipients in skin allogenic graft model. The recipients were divided randomly into 4 groups: (1) Stro-1(+) MSC group: 2×10(6) Stro-1(+) MSC were injected into the irradiated recipient mice before skin graft. (2) MSC group: 2×10(6) MSC were injected into the irradiated recipient mice before skin graft. (3) Irradiation control group: the recipient mice were just irradiated before skin allogenic graft. (4) Congenic control group: the irradiated BALB/c mice received the skin from the congenic mice. The survival time and pathologic changes of skin grafts were observed by macro- and microscopy with HE staining. The transforming growth factor β1 (TGF-β1) concentration in plasma of recipient mice was measured by ELISA before and after grafting. The results indicated that the survival time of skin grafts in the MSC group was (12.13 ± 3.34) d, which was not notably longer than the irradiation control group (11.38 ± 1.01) d. The survival time of skin grafts was significantly prolonged in the Stro-1(+) MSC group (30.68 ± 5.89) d, as compared with the irradiation control group and the MSC group, respectively; the pathologic examination of skin grafts showed a clear structure. After grafting, the TGF-β1 concentration in plasma of recipient mice was almost the same as before grafting in the irradiation control group and the congenic control group, but it significantly increased in the MSC group and the Stro-1(+) MSC group. It is concluded that the Stro-1(+) MSC induce greater immune tolerance than the unsorted MSC, and significantly prolong the survival time of skin grafts in vivo, while TGF-β1 does not contribute to the immune tolerance.
Animals ; Female ; Graft Survival ; immunology ; Humans ; Immune Tolerance ; Mesenchymal Stem Cell Transplantation ; methods ; Mesenchymal Stromal Cells ; immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Skin Transplantation ; immunology ; methods ; Transforming Growth Factor beta1 ; blood ; Transplantation, Homologous

Objective To set up a system in vitro to rapidly recover plasma proteins lost during artificial-liver treatment.Methods The polyprotein precipitation was obtained by all proteins whose isoelectric point pH value were between 7.3 and 5.1,which collided with each other and aggregated using gradient pH co-precipitation(adding 1 mol/L citric acid slowly in the plasma solution to change the pH values gradually from 7.3 to 5.1 in 5 h)combined with salting out(degree of saturation of NaCl is 33%,reacted for 5.5 h at 4℃)or low-temperature ethanol precipitation(40% ethanol, reacted for 5.5 h at -7℃)so that to get rid of toxicants by discarding the supernatant.Results In the range of pH 5.1-7.3,50%(29g/57g)of the total plasma proteins had been recovered by the gradient pH salting out and 41%(25 g/61g)by the gradient pH low-temperature ethanol co-precipi- tation.The protein remained in the supernatant was mostly albumin and its combined bilirubin.The levels of total bilirubin decreased to 0.07% and 0.06% of the original levels by these two methods respectively and the serum HBV DNA level decreased to be undetected(quantitative PCR).Conclu- sions The proteins with close isoelectric point can co-precipitated with the presence of high concen- tration of NaCl or low-temperature ethanol and by changing the pH value gradually.The total protein in the discarded plasma during artificial-liver treatment can be recovered rapidly using the gradient pH coprecipitation.

OBJECTIVETo explore the effect of half circle external fixation for the treatment of open tibial fractures.

METHODSFrom March 2005 to March 2011, 94 patients with open tibiofibula fractures were treated by closed manipulative or Kirschner-wire poking reduction with half circle groove external fixation including 63 males and 31 females with an average age of 39 years old ranging from 17 to 65 years old. Among these patients, 5 cases were cross shaped fractures, 19 were oblique form and spiral fractures, 70 cases were comminuted fractures. According to the fracture Gustilo classification, 49 cases were type IIIA, 45 were type IIIB. The incidence of wound infection, fracture healing time were observed. The function was evaluated according to the Johner-Wruhs standard.

RESULTSAll patients were followed up for 14 to 63 months (averaged 29 months). The wound healing time was from 16 to 39 weeks (means 21.4 weeks). No fracture nonunion, osteomyelitis and calf compartment syndrome occurred. The wounds of 81 cases were healed at the first period,deep wound infection occurred in 2 cases. According to the function Johner-Wruhs evaluation criteria:the result was excellent in 52 cases, good in 37 cases, fair in 5 cases.

CONCLUSIONClosed manipulative or Kirschner-wire poking reduction and half circle groove external fixation can reduce the infection rate of open tibiofibula fractures. For open tibiofibula comminuted fractures, after the half circle groove external fixation for 3 to 6 weeks, a middle Kirschner-wire was removed according to fracture end healing situation to make fixation dynamic and promote fracture healing.

Adolescent ; Adult ; Aged ; Bone Wires ; External Fixators ; Female ; Fracture Fixation ; instrumentation ; Fractures, Comminuted ; surgery ; Fractures, Open ; surgery ; Fractures, Ununited ; surgery ; Humans ; Male ; Middle Aged ; Tibial Fractures ; surgery ; Young Adult

NK/T cell lymphoma, a rare type of non-Hodgkin's lymphoma, is a highly aggressive disease with poor prognosis. Clinically, it is classified into nasal, non-nasal, and aggressive lymphoma/leukemia subtypes. They are characterized by geographic distribution and are universally associated with Epstein-Barr virus (EBV) infection. Due to its low occurrence and dismal clinical outcome, no therapeutic strategy is currently identified in this disease. Combined chemotherapy and radiotherapy have better effects for stage I/II nasal NK cell lymphoma. As for stage III/IV nasal NK cell lymphoma and non-nasal, and aggressive subtypes, chemotherapy is the main treatment method. Recently, some studies have demonstrated promising outcomes in the selected cases by high-dose chemotherapy supplemented with auto- or allo-HSCT.
Humans ; Lymphoma, Non-Hodgkin ; classification ; therapy ; Lymphoma, T-Cell ; therapy

Abstract: Objective　To analyze the detection of SARS‑CoV‑2 in household environment and public place environment of Huangpu District, and describe the feature of SARS‑CoV‑2 contamination in the environment exposure to the infected cases, so as to support the control strategies such as disinfection and health communication. Methods　The results of RT-PCR test for the environmental samples exposure to the cases infected by SARS‑CoV‑2 during February 1 to March 31 2022 in Huangpu District of Shanghai were collected as the research data. Pearson χ2 was used to test the significance of the differences between positive rates of SARS‑CoV‑2 contamination. Results　From February 1 to March 31, household environment samples had a higher positive rate (6.47%, 234/3 618) of SARS‑CoV‑2 contamination while the public place samples had a lower one (1.22%, 47/3 582) in Huangpu District of Shanghai (χ2=141.908, P<0.01). Among the household buildings, the lane houses of old style representing poorer living condition had the highest positive rates (8.31%, 96/1 155) of SARS‑CoV‑2 contamination while the apartments representing better living condition had the lowest (3.59%, 22/612) (F=5.25，P<0.05). Among the samples from household environment, samples regarding sewerage had the highest positive rates (13.30%,58/436) of SARS‑CoV‑2 contamination, while samples regarding the tool of cooking and sweeping had the lowest (3.10%,17/548) (F=9.84，P<0.01). Among the samples from public place environment, samples regarding entertainment tools had the highest positive rates (13.33%, 2/15) of SARS‑CoV‑2 contamination, while samples regarding the tool of cooking and sweeping had the lowest (0.62%, 4/646) (F=4.22，P<0.01). Conclusion　In the environment exposure to the SARS‑CoV‑2 infected cases, the disinfection, ventilation and cleaning should be intensified strictly. SARS‑CoV‑2's surviving in sewage environment should be evaluation dynamically. More health communication should be pushed to people of poorer living condition.